WO2003056227A1 - Structure de portion d'extremite de conduite d'eau, conduite d'eau comportant une structure de portion d'extremite, structure de raccordement entre une conduite d'eau et un corps de raccordement, et procede de formation de structure de portion d'extremite d'une conduite d'eau - Google Patents
Structure de portion d'extremite de conduite d'eau, conduite d'eau comportant une structure de portion d'extremite, structure de raccordement entre une conduite d'eau et un corps de raccordement, et procede de formation de structure de portion d'extremite d'une conduite d'eau Download PDFInfo
- Publication number
- WO2003056227A1 WO2003056227A1 PCT/JP2002/013509 JP0213509W WO03056227A1 WO 2003056227 A1 WO2003056227 A1 WO 2003056227A1 JP 0213509 W JP0213509 W JP 0213509W WO 03056227 A1 WO03056227 A1 WO 03056227A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- main body
- diameter
- water pipe
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
- F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts with metal rings which bite into the wall of the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0231—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member with specially adapted means for positioning the threaded member behind the collar
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on, or into, one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
- F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
- F16L19/0283—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall and having a bell-mouthed shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
- F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
- F16L33/223—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts the sealing surfaces being pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
- F16L33/24—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses with parts screwed directly on or into the hose
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/088—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring
- F16L37/0885—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring with access to the split elastic ring from a radial or tangential opening in the coupling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
Definitions
- TECHNICAL FIELD The end structure of a water pipe, a water pipe having the same end structure, a connection structure between a water pipe and a connecting body, and a method of forming an end structure of a water pipe
- the present invention relates to an end structure of a synthetic resin water pipe used for a hot water supply pipe, a water supply pipe, and the like, and to a water pipe having the same end structure.
- the present invention relates to a connection structure between a water pipe and a connector and a method for forming an end structure of the water pipe.
- Japanese Patent Application Laid-Open No. 7-42883 discloses a synthetic resin water pipe 110 used as a water pipe.
- the water passage pipe 1101 has an end structure for being connected to the tubular joint 1102 in a state where it is prevented from falling off.
- a flange portion 1101b is formed.
- a connecting cylinder 1103 is formed at both ends of the joint 1102 (only one end is shown in FIG. 45).
- the cylindrical portion 1103a of the connecting tubular portion 1103 extends from the connecting tubular portion 1103 along the axial direction of the pipe body 110a.
- An annular concave portion 1103b is formed in the connecting cylindrical portion 1103 radially outside the inner cylindrical portion 1103a.
- An annular seal member 1107 made of rubber is mounted in the recess 1103b.
- An external thread 1104 is formed on the outer peripheral surface of the connection cylinder 111.
- the sleep 1106 mounted on the outer periphery of the water pipe 1101 has a substantially cylindrical shape.
- a flange 1106b extending outward in the circumferential direction of the sleep 1106 is formed.
- the other end of the sleep 1106 is formed with a tapered diameter portion 1106a.
- the pipe main body 1101a must be fitted to the inner cylindrical section 1103a until the flange 1110b of the pipe body 111a contacts the seal member 1107.
- the joint 1102 is connected to the water pipe 1101.
- the female screw 1105a of the power nut 1105 is screwed into the male screw 111 ° 4 with the sleep 1106 fitted on the pipe body 111a.
- the pressing force from the inner peripheral surface force of the cover nut 111 reduces the diameter of the sleeve 110
- the diameter of 106a is reduced, and the inner peripheral surface of the sleeve 1106 is pressed against the outer peripheral surface of the pipe body 110a.
- the flange 111b of the pipe body 110a is sandwiched between the flange 111b of the sleep 110b and the recess 110b.
- the pipe main body 1101a is connected to the connecting cylinder section 1103 in a state where the water pipe 1101 is prevented from falling off by the joint 1102.
- the flange 1 1 0 1 b of the pipe main body 1 1 0 1 a is formed by heating the end of the pipe main body 1 1 0 1 a and pressing the end to a predetermined jig in a softened state. It is formed by Therefore, the operation of forming the flange portion 111b is very complicated. Further, since the flange portion 1101b is formed by molding a synthetic resin, for example, when the expansion and contraction of the flange portion 1101b due to a temperature change are repeated, the flange portion 1101b becomes It will be deformed.
- Japanese Patent Application Laid-Open No. 2000-23884 shown in FIG. 46 prevents leakage of fluid from an end structure between a generally cylindrical joint 2102 and a water pipe 2101. It discloses the technology to be used.
- the joint 2 102 formed of metal is connected to the pipe main body 2 101 a of the water pipe 2 101. At one end of the joint 2 102, there is formed a connection tubular portion 2 103 inserted into the inside of the water pipe 2 101.
- a pipe (not shown) is formed at the other end of the joint 2102 so as to be connectable.
- a plurality of ridges 210a protruding outward along the circumferential direction of the connecting cylinder portion 210 is formed at regular intervals on the outer peripheral surface of the connecting cylinder portion 203.
- the portion where the diameter of the pipe body 2 101 a is expanded is connected to the connecting cylinder 2 1 0 3 Attach to the outer peripheral surface of.
- the outer circumferential surface of the pipe main body 2101a is pressed against the outer circumferential surface of the connection tubular section 2103 by the diameter reduction of the pipe main body 2101a due to the contraction.
- a fixing ring 2104 formed of a synthetic resin is fitted to an end of the connected pipe main body 2101a.
- the end of the pipe body 210a is tightened from the outer peripheral side, and the end of the pipe body 210a is fixed to the fixing ring 2104 and the connecting cylinder. It is sandwiched between 2 103.
- the protruding ridge 2103 a bites into the outer peripheral surface of the pipe main body 2101 a, and the water pipe 2101 is connected to the fitting 2102 in a state where it is prevented from falling off.
- the inner diameter of the end is larger than the outer diameter of the connecting cylinder part 210.
- An unnecessarily large load acts on the end of the main body 2101a. With this load, the end of the pipe body 2101a is damaged or deformed, and the pipe body 2101 in the state where the water pipe 2101 is connected to the joint 2102. Fluid leaks from the end of a.
- a first object of the present invention is to easily form a structure for connecting a pipe main body of a water pipe to a connecting body.
- the second purpose is to connect the pipe body of the water pipe to the connector in a stable state.
- a third objective is to minimize the load acting on the end during the work of expanding the pipe body.
- a fourth object is to reduce the flow loss at the end of the pipe main body when the pipe main body is connected to the connecting body.
- a fifth object is to easily form a seal structure for preventing leakage of fluid at the end of the pipe main body of the water pipe.
- the present invention is, c through the water tube to provide an end structure of the following water pipe is formed with a tube body made of a synthetic resin, the inserted annular ends of the tube body It has a metal inner piece.
- the inner integral body is expanded from the inside of the tube main body such that the diameter of at least a part of the portion of the tube main body corresponding to the inner integral body is enlarged.
- the inner diameter of the expanded inner tube is substantially the same as the inner diameter of the portion of the tube body that is not expanded by the integrated inner tube.
- the present invention further provides the following end structure of a water pipe.
- the water pipe is provided with a synthetic resin pipe main body and an annular metal inner integral body inserted into the end of the pipe main body.
- the pipe main body is connected to a connection tube of the connection body, and the connection tube includes a connection means having an engagement portion.
- the inner integral body is expanded from the inner side of the tube main body such that at least a part of the tube main body corresponding to the inner integral body has a bulged portion bulging radially outward.
- the bulging portion engages with the engaging portion in order to connect the tube main body in a state where the tube main body is prevented from falling out of the connecting tube portion.
- the present invention further provides the following end structure of a water pipe.
- the water pipe comprises a synthetic resin pipe main body and an annular metal integral fastener inserted into the end of the pipe main body. The diameter is increased from the side of the pipe main body so that the gap between the pipe and the inner peripheral surface is sealed.
- the present invention further provides the following connection structure between a water pipe and a connection body.
- the water pipe includes a synthetic resin pipe main body and an annular metal inner integral body inserted into an end of the pipe main body.
- the inner integral body is expanded from the ⁇ side of the tube main body such that at least a part of the tube main body corresponding to the inner integral body forms a bulging portion bulging radially outward.
- the connection body includes a connection tube portion connected to the pipe main body.
- the connecting cylinder has a connecting means having an engaging portion. The engaging portion is engaged with the bulging portion so as to connect the pipe main body to the connecting tubular portion in a state where the tube main body is prevented from coming off.
- the present invention further provides the following method for forming an end structure of a water pipe.
- the water pipe includes a pipe body made of a synthetic resin, and an annular inner metal body.
- the method of forming is such that the inner tube is inserted into the end of the tube main body, and the inserted inner tube is inserted into the tube so that at least a part of the diameter of the tube main body corresponding to the inner body is enlarged. Includes expanding the inner diameter of the inner tube from the inside of the main body so that the inner diameter of the expanded inner tube is substantially the same as the inner diameter of the portion of the tube main body that is not expanded by the inner tube.
- the present invention further provides the following method for forming an end structure of a water pipe.
- the water pipe is connected to the connector.
- the water pipe includes a synthetic resin pipe main body and an annular metal inner body.
- the forming method is as follows.
- the inner integral body is inserted into the end of the pipe main body, the inserted inner integral body is expanded in diameter from the inside of the pipe main body, and the diameter is reduced to at least a part of the pipe main body corresponding to the inner integral body.
- the present invention further provides the following method for forming an end structure of a water pipe.
- the water pipe includes a synthetic resin pipe main body and an annular metal inner body.
- the forming method is as follows: the inner tube is inserted into the end of the tube main body, and the inserted inner tube is expanded from the inside of the tube main body so that the outer peripheral surface of the inner tube is pressed against the inner peripheral surface of the tube main body. And sealing between the outer peripheral surface integral with the inner part and the inner peripheral surface of the tube main body.
- the present invention further provides the following inner one piece.
- the inner inner part is used to connect the pipe body of the synthetic resin water pipe to the connector while keeping it from coming off. Thinner
- the body is made of metal and has an annular shape, and the integral fastener is inserted into the end of the tube body.
- the inner integral body is expanded from the inside of the tube main body such that a bulged portion bulging radially outward and engaging with the connecting body is formed in a portion of the tube main body corresponding to the inner integral body.
- the present invention further provides the following forming tool.
- the forming tool is used to connect the pipe body of the synthetic resin water pipe to the connecting body.
- the forming tool is inserted into the pipe main body and is inserted into the pipe main body in order to expand the diameter of the annular metal inner member inserted inside the end of the pipe main body.
- a drawing body disposed inside the inner body.
- the drawn body has an enlarged diameter portion having an outer diameter larger than the inner diameter of the inner body.
- the diameter of the inner body is enlarged by the enlarged diameter portion when the enlarged diameter portion is pulled out of the pipe main body through the inner portion of the inner tube.
- the inner inner part remaining in the pipe body pushes the pipe body radially outward from the inside to form a connection portion at the end of the pipe body.
- FIG. 1 is a cross-sectional view showing a connection state between a water pipe and a joint according to the first embodiment of the present invention.
- FIG. 2 (a) is an exploded perspective view showing the water pipe and the joint of FIG.
- FIG. 2 (b) is a front view showing the engagement sleeve of FIG.
- FIG. 3A is a perspective view showing a forming tool.
- FIG. 3B is a cross-sectional view showing the forming tool. .
- FIG. 4 is a cross-sectional view showing a state where the forming tool is inserted into the pipe main body.
- FIG. 5 is a cross-sectional view showing a state where the forming tool has been pulled out from the pipe main body.
- FIG. 6 is a cross-sectional view showing a connection state between a water pipe and a joint according to the second embodiment.
- FIG. 7 is an exploded perspective view showing the water pipe and the joint of FIG.
- FIG. 8 is a front view showing a state where a water pipe is connected to the joint of FIG.
- FIG. 9 is a cross-sectional view showing a connection state between a water pipe and a joint according to the third embodiment.
- FIG. 10 is an exploded perspective view showing the water pipe and the joint of FIG.
- FIG. 11 is a perspective view showing a jig.
- FIG. 12 is a cross-sectional view showing a state where the cylindrical body and the tube main body are mounted on the jig.
- FIG. 13 is a cross-sectional view showing a state where a bulge is formed by a jig.
- FIG. 14 is a cross-sectional view showing a connection state between a water pipe and a joint according to the fourth embodiment.
- FIG. 15 (a) is an exploded perspective view showing the water pipe and the joint of FIG.
- FIG. 15 (b) is a front view showing the slip-off prevention sleeve.
- FIG. 16 is a partial cross-sectional view showing a state where the inner sleeve and the outer sleep are attached to the pipe main body.
- FIG. 17 is a cross-sectional view showing a state where the pipe main body is expanded in diameter by a jig.
- FIG. 18 is a cross-sectional view showing a connection state between a water pipe and a joint according to the fifth embodiment.
- FIG. 19 (a) is an exploded perspective view showing the water pipe and the joint of FIG.
- FIG. 19 (b) is a front view showing the engagement sleeve.
- FIG. 20 is a cross-sectional view showing a water pipe and a water forming device according to the sixth embodiment.
- FIG. 21 is a perspective view showing the forming tool of FIG.
- FIG. 22 is a sectional view showing the extraction tool.
- FIG. 23 is a cross-sectional view showing a state where the end structure is formed by the forming tool.
- FIG. 24 is a cross-sectional view showing a state where the forming tool is pulled out from the water pipe.
- FIG. 25 is a partial sectional view showing a state where the forming tool is integrated with the drawing tool.
- FIG. 26 is a sectional view showing a forming tool according to the seventh embodiment.
- FIG. 27 is a cross-sectional view showing a state where a bulging portion is formed by the forming tool of FIG.
- FIG. 28 is a side view showing a forming tool provided with an inner sleeve according to another embodiment.
- FIG. 29 is a cross-sectional view showing a connection structure between a water pipe and a joint according to another embodiment.
- FIG. 30 is an exploded perspective view showing the water pipe and the joint of FIG.
- FIG. 31 is a cross-sectional view showing a connection state between a water pipe and a joint according to another embodiment.
- FIG. 3′2 is a partial cross-sectional view showing a connection structure between a joint and a water pipe according to another embodiment.
- FIG. 33 is an exploded perspective view showing a joint and a water pipe according to another embodiment.
- FIG. 34 is a partial new view showing a connection structure between water pipes according to another embodiment.
- FIG. 35 is a sectional view showing a tool according to another embodiment.
- FIG. 36 is a cross-sectional view showing a state where the diameter of the pipe main body is expanded using a tool.
- FIG. 37 is a partial cross-sectional view showing a connection structure between a joint and a water pipe according to another embodiment.
- FIG. 38 is a sectional view showing the end forming member.
- FIG. 39 is a cross-sectional view showing a connection structure between a water pipe and a joint using an end forming member.
- FIG. 40 (a) is a cross-sectional view showing a state before connecting a joint and a water pipe according to another embodiment.
- FIG. 40 (b) is a perspective view showing the joint of FIG. 40 (a).
- FIG. 41 is a cross-sectional view showing a connection state between a water pipe and a joint according to another embodiment.
- FIG. 42 is a cross-sectional view showing a state where the inner inner body of another embodiment is mounted on a water pipe.
- FIG. 43 is a cross-sectional view showing a connection state between a joint and a water pipe according to another embodiment.
- FIG. 44 is a partial sectional view showing a connection structure between a joint and a water pipe according to another embodiment.
- FIG. 45 is a cross-sectional view showing a connection state between a conventional water pipe and a joint.
- FIG. 46 is a partial cross-sectional view showing another conventional connection structure between a water pipe and a joint.
- the end structure 10 of the water pipe 11 connects the water pipe 11 made of synthetic resin to the joint 12 as a connecting body in a state where the water pipe 11 is prevented from coming off. Formed on the right end of the tube body 11a.
- the end structure 10 is configured such that the inner ring 13 inserted inside the right end of the pipe body 11 a is expanded in diameter from the inside of the ring body 13 to form the pipe body 11.
- the right end of a is provided with a bulging portion 1 1b protruding outward.
- the ring body 13 is formed of, for example, copper.
- the ring body 13 may be formed of a metal other than copper.
- the outer diameter of the ring body 13 before being inserted into the pipe body 11a is slightly smaller than the inner diameter of the pipe body 11a.
- the joint 12 is used to connect the water pipes 11 to each other.
- the joint 12 includes a substantially cylindrical joint body 12 a, an engagement sleeve 19, and a fixed sleeve 20.
- the joint body 12a, the engagement sleeve 19 and the fixed sleep 20 are made of synthetic resin.
- the joint body 12a, the engagement sleeve 19, and the fixed sleep 20 may be formed of metal.
- a connection cylinder part 14 for connecting the pipe body 11a is formed at the left end of the joint body 12a.
- the right end of the joint body 12a is formed so as to be connectable to a pipe (not shown).
- a male screw 15 is formed on the outer peripheral surface of the connection tube portion 14.
- An annular first contact surface 16 is formed inside the joint body 12a.
- Two ring-shaped seal members 17 made of a rubber material are mounted on the inner peripheral surface of the joint body 1 2a closer to the left end surface than the first contact surface 16 at predetermined intervals. I have.
- the number of the seal members 17 is not limited to two, and may be attached to only one place or three or more places in the joint body 12a.
- the engagement sleep 19 as an engagement body has a cylindrical shape in which the outer diameter on the left side is smaller than the outer diameter on the right side.
- a reduced diameter portion 19c whose outer diameter decreases from the right side to the left side of the engagement sleeve 19 is formed.
- the engagement sleeve 19 is provided in the connection tube portion 14 of the joint body 12a.
- the engagement sleeve 19 is formed by assembling a pair of divided bodies 19a having a semi-cylindrical shape. One side edges of the divided bodies 19a are connected and integrated, and the divided bodies 19a are formed so as to be separated or assembled around the connection part.
- an engaging concave strip 19b as an engaging portion is formed so as to extend along the circumferential direction of the engaging sleeve 19.
- the fixed sleeve 2 0 as a securing body c fixed sleep 2 0 having a substantially cylindrical shape is mounted screwed to the connecting tube portion 1 4.
- the diameter of the left end of the fixed sleeve 20 increases toward the right end of the fixed sleep 20.
- An inner hole 20 a having a diameter slightly larger than the outer diameter of the left end of the engagement sleep 19 is formed at the left end of the fixing slip 20.
- the length of the diameter of the inner hole 20a is greater than the length of the outer diameter of the tube body 11a plus twice the diameter of the wire for forming the ring body 13. Is also slightly larger. As shown in FIG.
- a female screw 20 b that can be screwed to the male screw 15 is formed on the inner peripheral surface at the right end of the fixed sleeve 20.
- the fixed sleeve 2 is screwed into the joint body 12a, and the engaging sleeve 19 is positioned between the joint body 12a and the fixed sleeve 20, so that the joint 12 is formed.
- the forming tool 21 for expanding the diameter of the ring body 13 to form the bulging portion 11b in the pipe body 11a will be described.
- the forming tool 21 is a substantially cylindrical insertion body 2 provided with the ring body 13 forming the bulging portion lib.
- the drawn body 22 having a cylindrical shape is formed of a metal material.
- An enlarged-diameter portion 22 a is formed at a portion separated from the left end surface of the drawn body 22 by a predetermined distance.
- the enlarged diameter portion 22 a has a constant outer diameter along the axial direction of the drawn body 22.
- the drawn body 22 has a tapered shape in which the outer diameter decreases from the enlarged diameter portion 22 a toward the right end of the drawn body 22.
- the extraction pin 23 is attached to the extraction body 22.
- the head 23 of the extraction pin 23 disposed in the extraction member 22 locks the inner peripheral edge of the right end of the extraction member 22 so that the extraction pin 23 comes off the extraction member 22. Absent.
- the insert 24 has a cylindrical portion 24a into which the extraction member 22 can be inserted.
- An annular support portion 24c having a diameter larger than the outer diameter of the cylindrical portion 24a protrudes from the right end of the cylindrical portion 24a.
- the through support 24 having a smaller outer diameter than the cylindrical portion 24a extends from the center of the annular support 24c along the axial direction of the cylindrical portion 24a.
- the through-support 24 b supports the shaft of the pull-out pin 23.
- the ring body 13 is bonded to the left open end of the cylindrical part 24a via an adhesive.
- the inner peripheral edge of the ring body 13 is disposed radially inward of the inner peripheral surface of the cylindrical portion 24a.
- the shaft portion of the extraction pin 23 is inserted from the cylinder portion 24a into the through-support portion 24b, and further inserted into the extraction member 22 force S cylinder portion 24a.
- the insertion of the extraction member 22 into the insertion member 24 is regulated, and the insertion support portion 24
- the shaft of the extraction pin 23 protrudes from b.
- the ring body 13 does not have to be bonded to the open end of the cylindrical part 24a.
- a bulging portion 11 b is formed in the water pipe 11 using the forming tool 21 to form an end structure 10 in the water pipe 11, and the end structure 10 is passed through the end structure 10.
- a method for connecting the water pipe 11 and the joint 12 will be described. First, as shown in FIG. 4, the insertion body 24, the extraction body 22 and the ring body 13 of the forming tool 21 are inserted into the pipe body 11a, and the pipe body 1 is inserted into the annular support portion 24c. Contact the end face of 1a. Next, using a special extraction tool (not shown), pull the extraction pin 23 in the direction away from the pipe body 11a, and pull out the pin 2 along the axial direction of the cylinder 24a.
- the drawn body 22 is pulled toward the back of the cylindrical portion 24a.
- the outer diameter of the extraction body 22 increases toward the left end of the extraction body 22. Therefore, as the drawn body 22 moves into the cylindrical portion 24a, the outer diameter of the drawn body 22 that comes into contact with the inner peripheral surface of the ring body 13 increases, and the inside diameter of the cylindrical portion 24a increases. Ring body protruding to the peripheral side The outer diameter of 13 is gradually enlarged. Then, as shown in FIG. 5, the right end of the tube main body 11a is pushed radially outward by the ring body 13.
- the insertion body 24 is moved away from the pipe body 1 1 a by the extraction body 22. To be pulled. Then, with the ring body 13 biting into the inner peripheral surface of the pipe body 11a, the insert 24 is separated from the ring body 13 and the insert 24 is withdrawn from the inside of the pipe body 11a. . Accordingly, the ring body 13 remaining in the pipe main body 11a forms the end structure 10 including the bulging portion 11b protruding outward from the outer peripheral surface of the pipe main body 11a.
- the inside diameter of the ring body 13 and the portion other than the bulging portion 11b of the pipe body 11a, that is, the inside diameter of the non-expanded portion are substantially the same.
- the length of the diameter of the inner hole 20a is larger than the length of the outer diameter of the tube main body 11a plus twice the diameter of the wire forming the ring body 13.
- the diameter of the inner hole 20a is larger than the outer diameter of the bulging portion 11b. Therefore, the fixed sleeve 20 is mounted on the tube main body 11a without locking the bulging portion 11b and the peripheral edge of the inner hole 20a. Subsequently, the engagement sleeve 19 is arranged on the outer peripheral side of the bulging portion 11b in a state of being divided into a pair of divided bodies 19a. A pair of 'divided bodies 19a' is assembled so that the bulging portion lib engages the engaging concave strip 19b to form an engagement slip 19, and also engages the pipe body 11a.
- the end of the pipe main body 11a to which the engagement sleeve 19 is attached is inserted into the connection cylinder portion 14 of the joint main body 12a.
- the female screw 20b of the fixing sleeve 20 is screwed into the male screw 15 of the joint body 12a.
- the divided body 19a of the sleep 19 enters into the inner hole 20a, and the engagement sleeve 19
- the inner peripheral surface of the inner hole 20a is gradually pressed against the outer peripheral surface of the reduced diameter portion 19c, and the diameter of the engagement sleeve 19 is reduced.
- the engagement sleep 19 is pressed to the back inside the connection cylinder portion 14, and the pipe body 11 a with which the engagement groove 19 b of the engagement sleeve 19 engages is also connected to the connection cylinder portion. It is pushed to the back inside 14. As a result, the right end face of the pipe main body 11a contacts the first contact face 16 and the right end face of the engagement sleeve 19 contacts the second contact face 18. In addition, since the engagement sleep 19 is held inside the fixed sleep 20 attached to the fitting body 12a, the pipe body 11a is prevented from falling out of the fixed sleep 20. You.
- the water pipe 11 Since the engagement sleeve 19 holding the outer peripheral surface of the pipe main body 1 1a is held in the inner hole 20a, the water pipe 11 is connected to the joint 1 via the engagement sleeve 19 and the fixed sleeve 20. 2 is kept stable. More specifically, the fixed sleeve 20 holding the engagement sleeve 19 inside is screwed and attached to the connection tube portion 14, so that the water pipe 11 is connected to the joint 12. A state in which the pipe body 11a is prevented from falling out of the connecting cylinder part 14 by the bulging part 11b of the water pipe 11 engaging with the engaging groove 19b of the engaging sleep 19 The water pipe 11 having the end structure 10 is connected to the joint 12.
- the ring body 13 is formed of metal, the ring body 13 is not deformed even when a high-temperature fluid flows through the water pipe 11. Therefore, the shape of the bulging portion 11b is maintained, and the engagement between the bulging portion 11b and the engaging concave streak 19b is maintained. Further, the inner peripheral surfaces of the pair of seal members 17 are brought into close contact with the outer peripheral surface of the pipe main body 11a, so that the outer peripheral surface of the pipe main body 11a and the inner peripheral surface of the joint main body 12a are separated. The space is well sealed. This embodiment has the following advantages.
- End structure 10 By expanding the diameter of the ring body 13 inserted inside the end of the pipe body 11 a to form a bulging part 11 b and connecting the water pipe 11 to the joint 12 End structure 10 can be formed. Therefore, as shown in FIG. 46, after heating and softening the end of the pipe main body 101 a, the end is pressed against a predetermined jig to connect the water pipe 110 1 to the joint 110. Unlike the prior art in which the flange portion 110b is connected to the connecting member 2, the end structure 10 for connecting the water pipe 11 to the joint 12 can be easily formed. The diameter of the ring body 13 is increased from the inside so that the bulge portion lib can be engaged with the engagement concave strip 19 b of the engagement sleeve 19 to form the end structure 10.
- the pipe main body 1 in order to fit the pipe main body 110 1 a into the inner cylindrical portion 110 3 a protruding from the joint 110 2, the pipe main body 1 It is not necessary to increase the diameter of the pipe main body 110a until the inner diameter of 101a becomes larger than the outer diameter of the insertion tube portion 110a. That is, in the present embodiment, it is possible to reduce the load acting on the pipe main body 11a by enlarging the diameter while minimizing the amount by which the diameter of the pipe main body 11a is increased to a necessary minimum. Therefore, it is possible to prevent the pipe body 11a from being damaged or deformed due to the load. Since the ring body 13 has a ring shape, the diameter of the ring body 13 can be easily increased by using the forming tool 21.
- the ring body 13 is made of metal, the strength of the bulging part 11 b can be increased as compared with the conventional synthetic resin flange part 111 b. Therefore, the ring body 13 After the bulging portion 11b is formed, the shape of the end structure 10 can be always maintained without reducing the diameter or deforming.
- the engagement sleeve 19 includes a pair of divided bodies 19a. For this reason, the engagement sleep 19 can be attached to the water pipe 11 after the bulging portion 11 b is formed in the pipe body 11 a. Therefore, first, after attaching the engagement sleeve 19 to the water pipe 11, it is necessary to expand the diameter of the ring body 13 so that the bulging portion 1 1b engages with the engagement concave ridge 19 b. Therefore, the work of attaching the engagement sleeve 19 to the water pipe 11 and the work of connecting the water pipe 11 to the joint 12 can be performed quickly.
- the outer diameter of the right end of the engagement sleeve 19 is longer than the diameter of the inner hole 20 a of the fixed sleep 20. Therefore, the engagement sleeve 19 attached to the pipe body 11a can be positioned in the fixed sleep 20 screwed to the joint body 12a, and the water pipe 11 can be moved from the joint 12. It is possible to prevent the problem of slipping out.
- the length of the diameter of the inner hole 20a of the fixed sleep 20 is the length obtained by adding the length of the outer diameter of the tube body 11a to twice the diameter of the wire forming the ring body 13. Greater than. Therefore, the fixed sleep 20 can be quickly mounted on the pipe main body 11a without the peripheral edge of the inner hole 20a being locked to the bulging portion 11b. Therefore, the connection work between the water pipe 11 and the joint 12 can be performed quickly.
- the tool comprises an assembly having four dividable parts.
- the bar When the bar is inserted into the center of the aggregate while the aggregate is inserted into the pipe body 11a, the four divided bodies are pushed radially outward, and the entire aggregate is expanded. Thereby, the end of the pipe main body 11a is expanded by each divided body. Therefore, the inner peripheral surface of the pipe body 11a that comes into contact with each divided body is However, the portion of the pipe body 11a corresponding to the gap between the adjacent divided bodies is not enlarged.
- the end of the pipe main body 11a is uniformly expanded in the entire circumferential direction, and further, only the portion corresponding to the ring body 13 is expanded. Therefore, unlike the case where the above-mentioned tool is used, the outer peripheral surface of the substantially circular pipe body 11a is surely in close contact with the inner peripheral surface of the sealing member 17 so that the water pipe 11 and the joint 12 are connected to each other. It is possible to prevent the fluid from leaking from between. Further, in the present embodiment, it is possible to prevent a problem that the inner surface of the pipe main body 11a is damaged by the surface of the tool when the pipe main body 11a is directly expanded in diameter by using the above tool. it can.
- the pipe body 11a between the bulging portion 11b of the pipe body 11a and the opening of the pipe body 11a. Is fitted with a metal inner 'leave 25 as an inner body.
- the inner sleeve 25 may be made of a synthetic resin.
- the inner sleeve 25 is a cylindrical inner sleeve A portion 25a and an engagement flange portion 25b formed at the right end of the part 25a so as to protrude radially outward.
- the outer diameter of the part 25a is slightly smaller than the inner diameter of the pipe rest 11a. For this reason, the part 25 a of the fastener can be fitted into the pipe body 11 a.
- the outer diameter of the engagement flange portions 2 5 b is larger than the inner diameter of the tube body 1 1 a.
- the joint 26 is used to connect the water pipes 11 to each other.
- the joint 26 includes a joint body 27 having a substantially cylindrical shape, a pin body 28 as an attachment having a substantially U-shaped cross section, a first ring 31 and a second ring 32.
- the joint body 27, the pin body 28, the first ring 31 and the second ring 32 are made of synthetic resin.
- the joint body 27, the pin body 28, the first ring 31 and the second ring 32 may be made of metal.
- connection cylinder portions 27b are formed, respectively.
- a protruding portion 27a is formed on the outer surface near the end surface of each connection tube portion 27b, protruding from the end surface of the connection tube portion 27b.
- the center of the pin body 28 is attached to the protrusion 27a.
- the pin body 28 extends along the radial direction of the connecting cylinder 27 b so that both ends of the pin 28 are separated from the protrusion 27 a.
- the pin body 28 is rotatable around a portion attached to the protrusion 27 a.
- An end surface of the connecting cylinder 27 b disposed on the opposite side of the projection 27 a with respect to the axis of the connecting cylinder 27 b has a connecting cylinder 27 b along the axis of the joint body 27.
- a pair of engaging projections 29 projecting outward from the end face of the housing are provided.
- An engagement recess 29 a with which the pin body 28 can be engaged is formed on the inner surface of each engagement protrusion 29.
- the pin body 28 is turned around the mounting portion of the protrusion 27 a so as to face the engagement protrusion 29, and the pin body 28 is further engaged with the engagement recess 29 a.
- Pin body 2 8 It can be arranged so that it cannot rotate. At this time, as shown in FIG.
- the pin body 28 is arranged ft so as to cross a part of the opening of the connection cylinder part 27b.
- a locking ridge 30 extending along the circumferential direction of the joint body 27 is formed on the inner peripheral surface in the joint body 27.
- the first ring 31 as the engagement body is a cylindrical body, and has a C-shaped cross section partially cut away along the axial direction.
- the outer diameter of the first ring 31 is the pressing force from the inner peripheral surface of the connection cylinder 27b. Shrink by.
- the second ring 32 has a cylindrical shape. As shown in FIG. 6, when the second ring 32 is inserted into the connection tube portion 27b, the second ring 32 protrudes due to the pressing force from the inner peripheral surface of the connection tube portion 27. It is pressed against the outer peripheral surface of the section lib.
- the inner part 25a of the inner sleeve 25 is fitted to the end of the pipe body 11a having the bulging portion 11b, and the pipe body 11 Engage the engagement flange 25b with the end surface of a.
- the first ring 31, the second ring 32, and the seal member 17 are attached to the same end of the pipe main body 11a.
- the sealing member 17, the second ring 32, and the first ring 31 inserted into the connection tube portion 27 b, the end of the pipe body 11 a having the bulging portion 11 b is formed. Part into the opening of the connection tube part 27 b.
- the pin body 28 is rotated so that both ends of the pin body 28 approach the engagement protrusion 29.
- the pin body 28 comes into contact with the left end face of the first ring 31, and the first ring 31 is pressed by the pin body 28 to the back inside the connection cylinder part 27 b. It is.
- the movement of the first ring 31 moves the second ring 32 and the seal member 17 to the inside of the connection cylinder 27 b.
- the outer diameters of the first ring 31 and the second ring 32 become smaller due to the pressing force from the inner peripheral surface of the connection cylinder 27 b.
- the first ring 31 is crimped on the outer peripheral surface of the pipe body 11a
- the second ring 32 is crimped on the outer peripheral surface of the bulge # 11b.
- the right end face of the first ring 31 engages with the bulging portion 1 1b, and in this engaged state, the first ring 31 is pushed into the inside of the connection tube portion 27b, whereby the pipe body 11a is moved.
- Connection tube 2 7 ⁇ Sent to the back.
- the end face of the engagement flange 25b is locked to the locking ridge 30 in the connection cylinder 27b, the further movement of the pipe body 11a to the inside of the joint body 27 can be prevented. Be regulated.
- the seal between the joint body 12a and the water pipe 11 is maintained by the sealing member 17 being pressed against the outer peripheral surface of the pipe body 11a.
- the first ring 31 engaged with the bulging part 11 b is moved by the pin body 28.
- the water pipe 11 is connected to the joint 26 in a state where the water pipe 11 is prevented from falling out of the connection cylinder part 27 b.
- the ⁇ ring 31 in a state of being engaged with the bulging portion 1 1 b comes out of the connection tube portion 27 b.
- the connection tube It is possible to prevent the water pipe 11 from coming out of part 2.7b.
- the engagement sleep 19 engaged with the pipe main body 11a from coming off, as shown in the embodiment of FIGS.
- the inner sleeve 25 protects the inner peripheral surface of the pipe main body 11a when the inner sleeve 25 is fitted in the pipe main body 11a. Therefore, the inner sleeve 25 can eliminate the problem that the end of the tube body 11a is thermally deformed. Furthermore, for example, even if the end face of the pipe body 11a is cut into an oblique shape The end face of the pipe body 11a can be protected by 25b. For this reason, there is no possibility that the seal member 17 may be damaged when the pipe main body 11a is inserted into the connection cylindrical portion 27b 2.
- the joint 33 is formed of metal, and the outer diameter of the cylindrical body 34 before being enlarged is slightly smaller than the inner diameter of the tube body 1 la (see Fig. 12).
- the joint 33 is provided with a substantially cylindrical joint body 33a and a slip-off prevention sleep 33b.
- the joint body 33a and the slip-off prevention sleeve 33b are made of synthetic resin.
- the joint body 33a and the slip-off prevention sleeve 33b may be formed of metal.
- a connection cylinder 33f for connecting the pipe body 1la is formed, and at the right end, a pipe (not shown) is connected.
- An external thread 33 g is formed on the outer peripheral surface of the connection cylinder 33 f.
- An annular first contact surface 33h is formed inside the joint body 33a.
- a seal member 17 is mounted on the first contact surface 33h.
- the left end of the joint body 33a on the opening side of the joint body 33a has an annular shape and a second contact having an inner diameter and an outer diameter larger than the first contact surface 33h.
- the surface 33 i is formed.
- the slip-off prevention sleep 33 as an attachment body screwed and attached to the connection tube portion 33 f has a substantially cylindrical shape.
- An inner hole 33c having a diameter slightly larger than the outer diameter of the tube body 11a is formed at the left end of the slip-off prevention sleep 33b.
- the left end of the slip-off prevention sleep 33 b is formed so that its inner diameter and outer diameter become smaller toward the opening of the inner hole 33 c of the slip-off prevention sleeve 33.
- a female screw 33 d that can be screwed to the male screw 33 g is formed on the inner peripheral surface on the right side of the slip-off preventing sleeve 33 b.
- a metal expanding jig 35 for expanding the diameter of the cylindrical body 34 shown in FIGS. 11 and 12 will be described.
- the vertical and horizontal directions in the description of the expanding jig 35 correspond to the vertical and horizontal directions in the drawing.
- the expanding jig 35 includes a main sleeve 36 having a substantially cylindrical shape.
- a disk-shaped sleeve cap 37 is screwed. As shown in FIG. 12, a circular hole 37 a is formed in the center of the sleep cap 37.
- a movable bolt 38 is inserted into the main sleeve 36 so that the head side of the movable port 38 faces the sleeve cap 7 side.
- a female screw hole 38a is formed at the center of the head end face of the movable bolt 38 so as to correspond to the circular hole 37a when inserted into the main sleep 36.
- a female screw is formed on the inner peripheral surface of 8a.
- An engagement groove 38 b extending along the axis of the movable bolt 38 is formed on the outer surface of the head of the movable bolt 38.
- a male screw 38 c is formed on the outer peripheral surface of the shaft of the movable bolt 38.
- the rotation of the movable bolt 38 in the main sleeve 36 is restricted by the engagement of the engagement pin 41.
- the male screw 4 2 a formed on the enlarged diameter shaft 42 is screwed into the female screw hole 38 a formed on the head of the movable bolt 38, and the enlarged diameter shaft 42 is attached to the movable bolt 38.
- the left end portion of the enlarged diameter shaft 42 is separated from the left end surface of the enlarged diameter shaft 42 by a predetermined distance from an inclined portion whose outer diameter gradually increases toward the left end surface of the enlarged diameter shaft 42. And a non-inclined portion.
- the non-inclined portion has a constant outer diameter.
- the outer diameter of the left end of the enlarged shaft 42 is slightly smaller than the inner diameter of the pipe body 11a.
- the movable port 38 moves in the main sleep 36 from the sleeve cap 37 toward the nut 40, With the movement, the enlarged diameter shaft 42 moves into the main sleeve 36.
- a support shaft 43 is attached to the main sleeve 36.
- a bulging portion lib is formed in the water pipe 11 by using the above-mentioned expanding jig 35 to form an end structure 10 in the water pipe 11, and the water pipe i 1 is connected to the joint 3. How to connect to 3 is explained.
- the male screw 42 a of the enlarged-diameter shaft 42 is drawn into the female screw hole 38 a of the movable bolt 38, in other words, into the main sleeve 36.
- the inclined portion of the enlarged diameter shaft 42 is gradually inserted into the biasing member 34, and the inner diameter of the cylindrical body 34 is gradually enlarged by the inclined portion. As shown in FIG.
- a joint 33 is formed by attaching a slip-off prevention sleeve 33b to the joint body 33a.
- the bulging portion 1 1b is engaged with the inner peripheral surface at the left end of the pull-out preventing sleeve 33b as an engaging portion, and the bulging portion 11b is prevented from coming off from the pull-out preventing sleeve 33b.
- the water pipe 11 having the end structure 10 is connected to the joint 33 in a state where it is prevented from falling off.
- the pipe body 11a is pressed inward of the joint body 33a by the detachment prevention sleeve 33b, so that the right end face of the cylindrical body 34 is sealed with the sealing member 17 in the joint body 33a. And a good seal is provided between the pipe body 11a and the joint body 33a. Since the inner diameter of the cylindrical body 34 is enlarged to be substantially the same as the inner diameter of the pipe main body 11a, the flow loss of the fluid flowing through the pipe main body 11a due to the cylindrical body 34 is almost eliminated. Can be. Further, the cylindrical body 3 4 to be expanded from the inside, the outer circumferential surface of the cylindrical body 3 4 is pressed against the inner circumferential surface of the pipe body 1 1 a.
- a seal structure is formed between the pipe main body 11a and the cylindrical body 34 to prevent leakage of the fluid from between the inner peripheral surface of the pipe main body 11a and the outer peripheral surface of the cylindrical body 34. Can be prevented. That is, it is possible to reduce the possibility that fluid leaks from between the outer peripheral surface of the pipe main body 11a and the outer peripheral surface of the joint main body 33a.
- a fourth embodiment of the present invention will be described with reference to FIGS. Note that, in the present embodiment, only the configurations of the end structure 10 and the joint 12 of the embodiment of FIGS. 1 to 5 are changed, and detailed description of the same portions will be omitted.
- the outer sleep 45 having a substantially cylindrical shape is formed of a synthetic resin such as cross-linked polyethylene.
- the outer sleep 45 may be formed of a soft metal such as copper.
- At the right end of the cylindrical portion 45 c of the outer sleeve 45 there is a perimeter portion 45 a projecting inward along the circumferential direction of the outer sleeve 45, and along the circumferential direction of the outer sleep 45.
- An outer peripheral flange 45 b protruding outward is formed.
- Fig. 16 As shown in the figure, the inner diameter of the tube portion 45c is slightly larger than the outer diameter of the tube body 11a, and the inner diameter of the inner peripheral flange portion 45a is smaller than the outer diameter of the tube body 11a.
- the joint 44 includes a joint body 44 a having a substantially cylindrical shape formed of a synthetic resin, and an extension prevention sleeve 46.
- the joint body 44a and the slip prevention sleep 46 may be formed of metal.
- connection tube parts 44d to which the pipe body 11a can be connected are formed respectively (FIGS. 14 and 15).
- FIG. 14 shows only the left end of the fitting body 44a).
- a female screw 44b is formed on the inner peripheral surface at the left end of the joint body 44a.
- a contact portion 44c protruding along the circumferential direction of the joint body 44a is formed near the center of the joint body 44a.
- a pair of seal members 17 are mounted so as to sandwich the contact portion 44c. Note that only one seal member 17 may be attached to the contact portion 44c.
- the detachment prevention sleeve 46 is formed by assembling a pair of divided bodies 46a.
- the divided bodies 46 are connected to each other at one side edge and are integrally formed.
- the divided bodies 46a can be separated from each other or assembled around the connection part of the divided bodies 46a.
- An engagement step portion 48 as an engagement portion is formed on the inner peripheral surface of the detachment prevention sleeve 46 along the circumferential direction of the detachment prevention sleeve 46.
- the engaging step portion 48 engages with the bulging portion 11b.
- a male screw 49 that can be screwed to the female screw 44 b of the joint main body 44 a is formed on the outer peripheral surface of the detachment prevention sleeve 46. With the slip-off prevention sleep 46 attached to the joint body 44 a, the engagement step portion 48 engages with the bulging portion 11 b.
- the pipe body 11a is fitted to the enlarged diameter shaft 42 to which the inner sleeve 25 is attached, so that the end face of the pipe body 11a is engaged with the engagement flange 25b, and the inner sleep 2 Insert part 5 of 5ina into tube body 1a.
- the outer end surface of the engagement flange portion 25b and the outer end surfaces of the inner peripheral flange portion 45a and the outer peripheral flange portion 45b are flush.
- the end of the pipe main body 11a is expanded using a diameter expanding jig 35 shown in FIG. Then, as shown in FIG.
- the outer diameter of the inner sleeve 25 is enlarged by the enlarged diameter shaft 42, and the outer diameter of the outer sleeve 45 is enlarged via the end of the pipe body 11a. Is done. Then, an enlarged portion of the outer sleeve 45, that is, a bulging portion 11b is formed, and a water pipe 11 having an end structure 10 having the bulging portion 11b is formed.
- the inner diameter of the inner sleeve 25 is the same as the inner diameter of the non-expanded portion of the pipe body 11a.
- a pair of divided bodies 46a is attached to the outer peripheral surface of the tube body 11a, and the slip-off prevention sleep 46 is attached to the tube body 11a.
- the end of the tube main body 11 a having the end structure 1 ⁇ is inserted into the connection cylinder 44 d. Further, the male screw 49 of the pull-out prevention sleep 46 is screwed into the female screw 44 b of the joint body 44 a to form the joint 44.
- the right end face of the slip-off prevention sleeve 46 abuts on the outer flange 45b of the outer sleeve 45, and the outer flange 45b is in contact with the slip-off prevention sleeve 46. and the outer sleeve 45 is positioned in the joint body 44a. At this time, the stepped portion 4 8 between the bulging portion 1 1 b and the removal prevention sleeve 46 Are engaged.
- the pipe body 11 a is attached to the joint body 4 4 a by the detachment prevention sleeve 46 provided with the engagement step portion 48 engaged with the bulging portion 1 1 b attached to the joint body 44 a.
- Getting out of a is prevented. That is, the water pipe 11 having the end structure 10 is connected to the joint 44 in a state where the water pipe 11 is prevented from falling off by the joint 44.
- fluid may flow from between the outer peripheral surface of the inner sleeve 25 and the inner peripheral surface of the pipe body 11a.
- the radially outer seal member 17 seals between the inner surface of the joint body 44 a and the outer surface of the outer sleeve 45.
- the inner diameter of the outer sleeve 45 becomes smaller due to the contraction of the crosslinked polyethylene, the outer sleep 45 is pressed against the outer peripheral surface of the pipe body 11a.
- the seal between the pipe main body 11a and the inner sleeve 25 and the outer sleeve 45 is satisfactorily performed. Therefore, leakage of fluid between the pipe main body 11a and the joint main body 33a can be reduced. Further, the end faces of the outer peripheral flange 45 b and the engagement flange 25 b are pressed against the corresponding seal members 17 respectively.
- up, down, left, and right in the following description correspond to up, down, left, and right in the drawings.
- the inner diameter of the cylindrical body 34 inserted inside the end of the pipe body 11 a is enlarged from the inner side.
- the outer sleeve 45 mounted on the outer peripheral surface of the main body 11a protrudes radially outward to form a bulged portion lib.
- the inner peripheral flange 45 a and the outer peripheral flange 45 b of the outer sleep 45 shown in FIG. 14 are omitted.
- the joint 55 includes a substantially cylindrical joint body 55a, an engagement sleeve 56, and a fixed sleep 57, each formed of a synthetic resin. ing.
- the joint body 55a, the engagement sleeve 56 and the fixed sleeve 57 may be formed of metal.
- connection cylinder parts 55c for connecting the pipe body 11a are formed.
- the right end of the joint body 55a (not shown) is formed so as to be connectable to a pipe (not shown).
- An external thread 55 d is formed on the outer peripheral surface of each connection cylinder portion 55 c.
- An annular contact surface 55b is formed at the ⁇ portion of the joint body 55a.
- a sealing member 17 is mounted on the contact surface 55b.
- the engagement sleeve 56 as an engagement body provided in the connection cylinder portion 55c has a substantially cylindrical shape.
- the engagement sleeve 56 is formed by assembling a pair of divided bodies 56a.
- the divided bodies 56a are connected to one side edge of each divided body 56a to be integrated, and are formed so that the divided bodies 56a can be separated from each other or assembled around the connection portion. .
- the inner diameter and the outer diameter of the right end of the engagement sleeve 56 are larger than those of the left end.
- an engagement surface 56b is formed as an engagement portion with which the bulging portion 1lb can be engaged.
- the inner diameter of the engagement sleep 56 other than the engagement surface 56 b is slightly larger than the outer diameter of the tube body 11 a.
- the fixing sleeve 57 as an attachment body which is screwed and attached to the connection cylinder portion 55c has a substantially cylindrical shape.
- An inner hole 57 a having a diameter slightly larger than the outer diameter of the left end of the engagement sleeve 56 is formed at the left end of the fixed sleeve 57.
- a female screw 57 b that can be screwed to the male screw 55 d of the joint body 55 a is formed on the inner peripheral surface at the right end of the fixed sleeve 57.
- the fixed sleeve 57 is attached to the pipe body 11a.
- the enlarged diameter shaft 42 is attached to the enlarged diameter jig 35.
- the pipe body 1 4 is attached to the cylindrical body 34 of the expanded shaft 42 attached to the expanding jig 35. 1 Externally fit a.
- the cylindrical body 34 is expanded using the expanding jig 35 so that the inner diameter of the cylindrical body 34 is substantially the same as the inner diameter of the non-expanded portion of the pipe body 11a. Let it. As a result, the outer diameter of the outer sleeve 45 is enlarged through the end of the pipe main body 11a, and a bulged portion 1lb is formed. Then, a water pipe 11 having an end structure 10 having a bulging portion lib at an end of the pipe main body 11a is formed. In order to connect the above-mentioned water pipe 11 to the joint 55, first, as shown in FIG. 19 (a), a pair of divided bodies 56a are assembled on the outer peripheral surface of the pipe main body 11a.
- the inner peripheral edge of the fixed sleeve 57 engages with the outer peripheral surface of the engaging sleeve 56 to move the engaging sleeve 56 inward of the joint body 55a.
- the right end face of the engagement sleep 56 contacts the left end face.
- the engagement sleep 56 is sandwiched between the joint body 55a and the fixed sleeve 57, and the bulging portion 11b and the engagement surface 56b of the engagement sleeve 56 are engaged.
- a combined joint 55 is formed. Since the bulging portion 11b is engaged with the engagement sleeve 56 positioned in the joint 55, the water pipe 11 is connected to the joint 55 in a state where it is prevented from falling off. Further, the right end face of the pipe main body 11a is pressed against the seal member 17, and the space between the pipe main body 11a and the joint main body 55a is sealed well.
- the forming tool 111 of the present embodiment is a modification of a part of the structure of the forming tool 21 for forming the end structure 10 in the water pipe 11 of the embodiment of FIGS. is there.
- Other configurations are the same as the configurations of the respective embodiments of FIGS. 1 to 5, and description of the same portions will be omitted.
- up, down, left, and right in the following description correspond to up, down, left, and right in the drawings.
- the drawn body 22 included in the forming tool 1 1 1 has a small diameter whose outer diameter gradually decreases as the distance from the enlarged-diameter portion 22 a increases, that is, toward the right side of the drawn body 22.
- Part 2 2b is provided.
- the extraction pin 23 has a shaft portion 114b as a protrusion extending from the head portion 23a. On the outer peripheral surface of the shaft portion 114b, irregularities (not shown) are formed along the circumferential direction of the shaft portion 114b.
- the insert 24 includes a through support 115 b extending in parallel from the support 24 c of the insert 24 along the axial direction of the insert 24. The outer diameter and the inner diameter of the through-support portion 115b are smaller than those of the cylindrical portion 24a.
- a communication hole 115d communicating with a portion of the insert 24 is formed in the communication support portion 115b.
- the through hole 1 15d extends parallel to the axis of the through support 1115b.
- the shaft portion 114b of the extraction pin 23 inserted into the cylindrical portion 24a is inserted into the through hole 115d.
- the shaft portion 114b of the extraction pin 23 is supported by the through-support portion 15b along the axis of the cylindrical portion 24a.
- a holding member 133 capable of holding the shaft portion 114b is provided in the movable body 132.
- the tool body 13 1 is further provided with a hopper 134 for moving the moving body 132 to the back of the tool body 131.
- the tool body 13 1 having an L-shaped cross section has a substantially cylindrical storage section 13 1 a at the upper end thereof, and a fixed handle having a substantially C-shaped cross section extending downward from the storage section 13 1 a. 1 3 1b.
- the moving body 132 is accommodated inside the accommodation part 131a so as to be movable in the left-right direction of the accommodation part 31a.
- the left end of the housing portion 131a has a tapered shape in which the inner diameter and the outer diameter decrease toward the left end of the housing portion 131a.
- a through-hole 1311c is formed at the left end of the housing 13a.
- a substantially cylindrical base 13 7 is screwed into the inner periphery of the through hole 13 1 c.
- the base 13 7 is attached to the housing 13 1 a so as to reach the inside of the housing 13 1 a, and the shaft 1 14 b is formed in the base 13 so as to be able to pass through.
- a long hole 1311d is formed in the lower end surface of the housing portion 1311a along the longitudinal direction of the housing portion 1311a.
- the moving body 132 has a cylindrical shape with a bottom, and a receiving hole 1332a having a size that allows the mouthpiece 1337 to be inserted is formed at the left end of the moving body 132.
- the left end of the moving body 132 is formed such that the inner diameter and the outer diameter are inclined toward the left side of the moving body 132.
- a reduced diameter surface 132b is formed on the inner peripheral surface at the left end of the moving body 132.
- a fixed protrusion 1332c is provided on the inner bottom surface of the moving body 132.
- the right end of the coil spring 13 2 d is fixed to the fixed projection 13 2 c.
- a right end of a metal-made substantially cylindrical extruded member 135 is attached.
- a holding member 133 is disposed between the inner peripheral surface of the left end of the moving member 132 and the pushing member 135 in the moving member 132.
- the holding member 133 is constantly urged toward the left end side of the moving body 132 by a coil spring 133d via the pushing member 135.
- the holding member 133 is formed in a substantially cylindrical shape by assembling two divided bodies having a substantially semi-cylindrical shape made of metal.
- a holding hole 133a is formed in the holding member 133.
- the shaft 1 1 4b of the extraction pin 2 3 that has passed through the base 1 3 7 is inserted into the holding hole 1 3 3a.
- the outer peripheral surface of the holding member 133 is formed with a tapered surface 133 b whose inner and outer diameters gradually decrease from the right end to the left end of the holding member 133. .
- the holding member 13 3 On the inner peripheral surface of the holding member 133, irregularities that can engage with the irregularities of the shaft portion 114b are formed.
- the holding member 13 3 In a state where the base 13 7 is inserted into the moving body 13 2 and the holding member 13 is not present, the holding member 13 3 is urged toward the left end side of the moving body 13 2 by the coil spring 13 2 d.
- the holding hole 133a is closed by the tightening of the moving body 132 with the reduced diameter surface 132b.
- the holding member 13 3 is formed by the base 13 7 against the urging force of the coil spring 13 2 d.
- a gear portion 132 e extending along the longitudinal direction of the moving body 132 is formed on the outer surface of the lower end of the moving body 132.
- the gear part 13 2 e is exposed to the outside of the accommodation part 13 1 a from the long hole 13 1 d of the accommodation part 13 1 a.
- a hopper 134 for moving the mobile unit 132 is provided in the fixed handle 1 3 1 b.
- the upper end of the leper 13 4 is attached to the fixed handle 13 1 b by a shaft member 13 36 spanned between opposed side walls of the fixed handle 13 13 b.
- the lever 13 4 is rotatable with respect to the fixed handle 13 1 b around the shaft member 13 36 as the center of rotation.
- a panel member (not shown) is provided between the lever 13 4 and the fixed handle 13 1 b.
- Lever 13 4 is urged away from the fixed handle 13 1 b.
- the upper end of the lever 13 4 has a substantially circular shape, and a plurality of engaging blades 13 34 a that can be engaged with the gear 13 e are formed on the outer peripheral surface of the upper end.
- the engaging blade portion 13 34 a is engaged with the gear portion 13 2 e.
- the moving body 1 3 2 is formed by the engagement of the mating blade 1 3 4 a and the gear 1 3 2 e. Is moved away from the inside of the accommodating portion 1311a, that is, in a direction away from the through hole 1311c.
- the rotation of the lever 13 4 toward the fixed handle 13 1 b is released, the lever 13 4 is turned in a direction away from the fixed handle 13 1 b by the spring member.
- the moving body 1332 is moved in the direction of the through hole 131c of the accommodating portion 1331a by the combination of the combination blade portion 134a and the gear portion 132e.
- a method of forming the end structure 10 on the water pipe 11 using the forming tool 111 and connecting the water pipe 11 to the joint 12 via the end structure 10 will be described.
- the structures of the water pipe 11 and the joint 12 are the same as those shown in FIG. 1, and FIGS. 1 and 2 (b) are used for the description of the connection method. First, as shown in Fig.
- the shaft 1 1 4 b of the extraction pin 23 is connected to the base 13 From inside, insert it into the holding hole 133 a, and make the end face of the insertion support part 115 b of the insert 24 abut the base 137. Subsequently, as shown in FIG. 23, the lever 13 4 is rotated toward the fixed handle 13 1 b, and the moving body 13 2 is moved away from the through hole 13 1 c, that is, as shown in FIG.
- the tapered surface 1 3 3 b of the holding member 13 3 comes into sliding contact with the reduced-diameter surface 13 2 b of the moving body 13 2, so that the holding member 13
- the outer diameter of 3 is gradually reduced.
- the shaft 1 1 4 b inserted into the holding hole 1 3 3 a becomes the holding hole 1 3 3 It is held in a, and the extraction body 22 is attached to the tool body 13 1.
- the projections and depressions of the shaft portion 114 b and the convex portion of the inner peripheral surface of the holding hole 133 a are engaged, and the shaft portion 114 b is firmly held in the holding member 133.
- the water pipe 11 is attached to the forming tool 11 so that the tubular part 24a, the drawn body 22 and the ring body 13 are inserted into the pipe body 11a, and the support part 24c Abut the right end face of the pipe body 1 1 a to the pipe.
- the small-diameter portion 2 2 b of the drawn body 22 is disposed inside the ring body 13.
- the ring body 13 is positioned at a predetermined position in the tube main body 11a by the end face of the pipe main body 11a abutting on the support portion 24c.
- the cylindrical portion 24a is inserted into the pipe body 11a so that the ring 1 3 is inserted into the pipe body 1 1 a ⁇ .
- the lever 1 3 4 is further turned toward the fixed handle 1 3 1 b to move the moving body 1 3 2 into the housing 1 3
- the outer peripheral surface of the holding member 133 and the inner peripheral surface of the receiving hole 1332a of the moving body 132 are locked.
- the holding member 1 3 3 is moved to the rear with the shaft 1 1 1 4 b held along with the movement of the moving body 1 3 2, and the extraction pin 2 3 is moved to the tube body 1. Pulled away from 1a. Then, the movement of the extraction pin 23 locks the head 23a to the locking edge portion 113c, and the locking causes the extraction member 22 to be pulled deep inside the cylindrical portion 24a. As the outer diameter of the outer peripheral surface gradually increases toward the left end side, the outer diameter of the drawn-out body 22 becomes cylindrical as the drawn-out body 22 is drawn into the cylindrical portion 24a. The outer diameter of the drawn body 22 passing through the open end of the opening gradually increases.
- the outer diameter of the drawn body 22 that comes into contact with the inner peripheral surface of the ring body 13 gradually increases, and the inner diameter of the ring body 13 gradually increases.
- the inner diameter of the ring body 13 becomes substantially the same as the outer diameter of the enlarged diameter portion 22a due to the enlarged diameter portion 22a.
- Expanded as c Since the outer diameter of the enlarged diameter portion 22a is slightly smaller than the inner diameter of the pipe body 11a, the expanded inner diameter of the ring body 13 and the unexpanded portion of the pipe body 11a The inner diameter of the pipe body 11a is almost the same.
- the drawing tool 130 is moved as it is away from the pipe body 11a.
- the outer diameter of the enlarged diameter portion 22a is slightly smaller than the inner diameter of the cylindrical portion 24a. It is moved to the back inside the same tube part 24a while being guided on the peripheral surface.
- the right end surface of the drawn body 22 comes into contact with the inner bottom surface of the tubular portion 24a, and the inserted body 24 is pulled by the drawn body 22 in a direction away from the tube body 11a.
- the expanded ring body 13 bites into the outer circumferential surface of the pipe body 11a, the insertion body 24 is pulled to separate the ring body 13 from the insertion body 24.
- only the insert 24 is withdrawn from the inside of the pipe body 11a.
- the ring body 13 remains in the pipe main body 11a, and the ring body 13 forms a bulging portion 10b in the pipe main body 11a.
- the inner diameter of the ring body 13 and the inner diameter of the pipe body 11a in the non-expanded portion of the pipe body 11a become substantially the same, so that the flow loss due to the ring body 13 can be reduced.
- the forming tool 111 having the swelling portion 10b and the end structure 10 capable of reducing the flow loss is formed.
- the moving body 13 2 moves to the through hole 13 1 c side of the housing 13 1 a.
- the moving body 13 2 moves to the left side of the housing portion 13 1 a while the shaft portion 114 b is held by the holding member 133.
- the left end face of the holding member 133 abuts on the end face of the mouthpiece 133, and further movement of the holding member 133 is restricted. Since the reduced diameter surface 1 3 2b expands toward the right side of the moving body 1 32, when the moving body 1 32 moves, the outer diameter of the holding member 1 33 becomes the reduced diameter surface 1 3 2 The tightening by b is released and gradually expands. Then, the holding of the shaft 1 1 4 b in the holding hole 1 3 3 a is released, and the left end face of the moving body 13 2 It comes into contact with the inner peripheral surface on the left end of a, and returns to its original state.
- the present embodiment has the following advantages in addition to the advantages of the embodiment shown in FIGS. -
- the ring body 13 is formed of metal. For this reason, the expanded ring body 13 does not shrink, and the connection work between the joint 12 and the water pipe 11 can be performed without considering the reduction in the inner diameter of the end structure 10. Therefore, unlike the conventional case where the end of the pipe body 11a had to be attached to the connecting cylinder while the inner diameter of the end of the pipe body 11a was enlarged, the connection of the water pipe 11 Does not require premature work.
- the connection work between the water pipe 11 and the joint 12 can be easily performed with a margin. Since the ring body 13 is pre-assembled to the drawing body 22, the end structure 10 is formed. In comparison with the case where the ring body 13 is assembled to the drawing body 22 at the site, the end structure 10 is formed. The forming operation can be performed quickly and easily. The small-diameter portion 2 2b of the drawing body 22 is disposed inside the ring body 13. For this reason, the end structure 10 can be formed in the water pipe 11 only by passing the extruded body 22 of the bow I through the ring body 13. Further, the ring body 13 can be attached to the drawing body 22, and the drawing body 22 and the ring body 13 can be integrated.
- the inner diameter of the ring body 13 can be gradually enlarged by the small diameter part 2 2b of the drawing body 22. Therefore, unlike the case where the enlarged diameter portion 22a is directly passed through the ring body 13 to expand the diameter of the ring body 13 at once, the diameter of the ring body 13 can be gradually increased with a small force. it can.
- the small-diameter portion 2 2b of the drawn-out body 2 2 forms a step-like outer peripheral surface of the drawn-out body 22 and prevents the problem that the enlarged-diametered portion 2 2a is locked to the inner peripheral edge of the ring 13. Thus, the extraction operation of the extraction body 22 can be performed smoothly.
- the drawing body 22 includes a drawing pin 23 having a shaft portion 114b, and the shaft portion 114b protrudes from the inside of the pipe body 11a. Therefore, the pull-out body 22 can be easily pulled out from the inside of the pipe main body 10a by pulling the shaft portion 114b, so that the end structure 10 can be easily formed in the water pipe 11. it can.
- the forming tool 1 1 1 is equipped with a pull-out tool 130, and by using the pull-out tool 130, the pull-out pin 23 is easily pulled out from the inside of the pipe body 1 1 a, so that the inner diameter of the ring body 13 is obtained. Can be easily enlarged. Therefore, the operation of forming the end structure 10 in the water pipe 11 can be easily performed.
- the tubular part 24a By contacting the end face of the pipe body 11a with the support part 24c, the tubular part 24a can be positioned within the pipe body 11a, and the ring body 13 can be positioned inside the pipe body 11a. Can be positioned. Therefore, during the work of expanding the diameter of the ring body 13, it is possible to prevent the ring body 13 from moving within the pipe body 11 a or dropping from the inside of the pipe body 1 la, and 0b can be swelled accurately at a predetermined position on the pipe body 11a. Since the ring body 13 was adhered to the end face of the tube portion 24a and was integrally supported in advance, the ring body 13 was inserted into the tube body 11a so that the ring body 13 was connected to the tube body 11.
- the work of inserting and arranging in a can be easily performed.
- the insert 24 is removed from the inside of the pipe body 11a. Therefore, in a state where the water pipe 11 is connected to the joint 12, the flow loss of the fluid flowing through the water pipe 11 can be almost eliminated.
- the forming tool 111 of the present embodiment includes an insert 24. Specifically, the outer peripheral surface of the drawn body 22 comes into contact with the vicinity of the open end of the cylindrical portion 24a, and the shaft portion 114b of the drawing pin 23 is supported by the through support portion 115b. Therefore, the extraction body 22 and the insertion body 24 are assembled in a stable state.
- the usability can be improved as compared with the case where the forming tool is formed by the drawn body 22 and the ring body 13. Since the ring 13 is disposed between the insert 24 and the puller 22, when the puller 22 is pulled out, the function of supporting the ring 13 by the insert 24 and Bow I Extraction 2 It is possible to exhibit the expanding function of 2 almost simultaneously. Further, as shown in FIG. 25, a screw portion is formed on the outer peripheral surface of the insertion support portion 115 b, and the tool main body is held in a state where the penetration support portion 115 b is inserted into the moving body 132. It is screwed to the inner peripheral surface of the through hole 1 3 1 c.
- the insert body 24 may be integrated with the tool body 1 3 1, and the forming tool 1 1 1 may be configured by passing the extraction body 2 2 through the insert body 24, and the ring body 1 3 may be integrated with the extraction body 2. It may be attached to 2 and integrated.
- a seventh embodiment of the present invention will be described with reference to FIGS. 26 and 27.
- the present embodiment is a configuration in which the ring body 13 and the insert body 24 of the embodiment of FIGS. 20 to 25 are only changed, and detailed description of the same parts will be omitted.
- the upper, lower, left and right of the forming tool 211 in the following description correspond to the upper, lower, left and right in the drawings. As shown in FIG.
- the forming tool 211 includes an inner sleeve 250 that is a cylindrical body as an inner body, the drawn-out body 22, and a cap 260 as a support member.
- the inner sleeve 250 has an inner part 250a formed of metal.
- an engagement flange part 25Ob that protrudes outward along the circumferential direction of the inner part 250a.
- a ridge 250c formed by folding the edge of the inner part 250a inward is formed.
- the ridge portion 250c protrudes inward of the inner part 250a from the inner peripheral surface of the inner part 250a.
- the outer diameter of the inner part 250a is slightly smaller than the inner diameter of the pipe body 11a.
- the inner part 250a can be inserted into the pipe body 11a.
- the inner diameter of the inner part 250a is slightly larger than the outer diameter of the enlarged diameter part 22a.
- the outer diameter of the engagement collar 250b is larger than the inner diameter of the pipe body 11a, and when the inner part 250a is inserted into the pipe body 11a, the pipe body 11a
- the engaging flange 250b is engaged with the end face, and the engaging flange 250b covers the end face.
- the cap 260 includes a substantially cylindrical fitting portion 260a formed of metal. Note that the fitting portion 260a may be formed of a synthetic resin.
- the outer diameter of the fitting part 26a is slightly smaller than the inner diameter of the inner part 250a. Therefore, the fitting portion 260a can be fitted into the inner part 250a.
- a through hole 260d is formed substantially at the center of the fitting portion 260a.
- the insertion support portion 260a is formed with a through support portion 260b extending along the axis of the insertion portion 260a.
- the shaft portion 114b of the extraction pin 23 is inserted into the insertion hole 260d, and is supported by the insertion support portion 260b.
- a support portion 260c that protrudes outward along the circumferential direction of the fit portion 260a is formed in the fit portion 260a.
- the engagement flange portion 250b of the inner sleeve 250 is fitted to the fitting portion 260a of the cap 260.
- the inner sleep 250 is supported by the cap 260 in a state where the support portion 260 c of the cap 260 is engaged with the outer surface of the engagement flange 250 b, and the cap 260
- An inner sleeve 250 is integrally provided in advance at 0.
- the shaft 1 1 4 b of the extraction pin 23 and the small diameter portion 2 2 b of the extraction body 22 are inserted into the inner part 250 a, and the shaft 1 1 4 b of the extraction pin 23 is a through hole. It protrudes outward from the fitting portion 260a via the 260d.
- the outer peripheral surface of the drawn-out body 22 comes into contact with the inner peripheral surface of the ridge portion 250 c of the sleeve 250, and the shaft portion 1 1 4 b of the extraction pin 23 becomes a through support portion 260 b.
- the pull-out body 22, the inner sleeve 250 and the cap 260 are assembled in a stable state. Further, a shaft portion 114b of the extraction pin 23 supported by the through support portion 260b projects from the cap 260. Further, the length of the drawn body 22 in the axial direction is shorter than the length between the ridge portion 250c and the left end face of the cap 260.
- the inner part 250a of the forming tool 211 and pulling out The body 22 is inserted into the pipe body 11a, and the end face of the pipe body 11a is brought into contact with the engagement flange 250b.
- the protruding ridge 250c is positioned at a predetermined position in the pipe main body 11a.
- the shaft portion 1 1 4b of the extraction pin 23 is a through-support portion of the cap 260.Since the extraction pin 23 is passed through the inside 260b, the extraction pin 23 is the axis of the inner part 250a.
- the drawn body 22 is pulled along the axis of the inner part 250a. That is, the drawn body 22 moves inside the pipe main body 11a along the axis of the pipe main body 11a. Then, as shown in FIG. 27, as in the embodiment of FIGS. 20 to 24, the inner diameter of the ridge portion 250c is enlarged by the enlarged diameter portion 22a, and the outer surface of the pipe body 11a is increased. A bulged portion 10b is formed in the fin. Further, when the pull-out pin 23 is pulled, the drawn-out body 22 is housed between the ridge portion 250c and the cap 260, and subsequently comes into contact with the cap 260.
- the c- shaped ridge portion from which the cap 260 is pulled away from the tube body 11a from the inner sleeve 250, and the drawn-out body 22 and the cap 260 are drawn out of the tube body 11a. Since 250c is engaged with the inner peripheral surface of the pipe body 11a, the inner slip 250 is separated from the cap 260, and the drawn-out body 22 is bowed from the pipe body 11a.
- a bulge 10b is formed at the end of the pipe body 11a by a ridge 250c, and the outer peripheral surface of the ridge 250c and the inside of the pipe body 11a are formed.
- a seal structure is formed between the outer peripheral surface and the peripheral surface to prevent fluid leakage. Furthermore, when the inner diameter of the ridge 250 c and the inner diameter of the pipe main body 11 a in the portion where the inner diameter of the pipe main body 11 a is not expanded are substantially the same, and the inner diameter of the ridge 250 c is not expanded. , The flow loss is reduced. Then, a water pipe 11 having a bulging portion 10b, a seal structure and an end structure 10 having a function of reducing flow loss is formed in the pipe body 11a, and the water pipe 11 is formed.
- each embodiment may be changed as follows. As shown in FIG. 28, the engagement flange portion 250b and the ridge portion 250c of the embodiment shown in FIGS. aIncrease the overall thickness and form the inner diameter of the inner part 250a smaller than the outer diameter of the enlarged diameter part 22a.
- the diameter of the entire inner part 250a is expanded along the axis by passing through the inner part 250a of the drawn body 22 and the axis of the inner part 250a is inserted into the pipe body 11a.
- a bulged portion 11b having a length along the length may be formed.
- the outer peripheral surface of the inner part 250a and the inner peripheral surface of the pipe body 11a are in close contact with each other to form a seal structure.
- the inner diameter of the inner portion 250a and the inner diameter of the portion where the inner diameter of the pipe body 11a is not enlarged are substantially the same, and the flow loss is reduced. -In the embodiment of Figs.
- the outer diameter of the bulging part lib may be larger than the diameter of the inner hole 20a of the fixed sleeve 20.
- the fixed sleeve 20 is previously mounted on the pipe main body 11a before the bulging portion 11b is formed on the pipe main body 11a.
- the engagement sleeve 19 may be integrally formed without being divided into the two divided bodies 19a.
- the ring body 13 may be replaced with a cylindrical body 34 shown in FIG. At this time, the size of the engagement recess 19b is adjusted so that the bulging portion 11b formed by the cylindrical body 34 and the engagement recess 19b of the engagement sleeve 19 engage.
- connecting cylinder portions 14 may be formed at both ends of the joint body 12 a of the joint 12.
- the ring body 13 is expanded by using a generally used expanding tool for expanding the pipe body 11 a.
- the swelling portion 11 b may be formed in the water pipe 11.
- the first ring 31 and the second ring 32 are integrally formed, and the bulging portion 11 b can be engaged with the inner peripheral surface of the integrated member.
- a groove may be formed.
- the inner sleeve 25 may be omitted.
- connection cylinder 27 b may be formed only at one end of the joint body 27.
- the joint 26A shown in Fig. 29 may be connected to the water pipe 11 having the end structure 10.
- the configuration of the present embodiment includes the cylindrical body 34 of the embodiment of FIG. 9 in the main configuration of the embodiment of FIGS. 6 to 8. More specifically, the second embodiment differs from the embodiment of FIGS. 6 to 8 in that the second ring 32 is omitted and the configuration of the inner sleeve 25 is different. Since other parts are the same, the same numbers are given and the explanations are omitted. Also in this embodiment, up, down, left, and right in the following description correspond to up, down, left, and right in the drawings.
- the pipe 34 is inserted into the pipe body 11 a of the water pipe 11, and the diameter of the pipe 34 is increased to form the water pipe 11 having the end structure 10.
- the first ring 31 and the seal member 17 are attached to the end of the pipe body 11a on which the bulging portion 11b is formed.
- the pipe body 11a of the water pipe 11 is connected to the joint 26A in substantially the same steps as those described in the embodiment of FIGS. 9 to 13 (see FIG. 30).
- the present embodiment does not require the second ring as compared with the embodiments of FIGS. 9 to 13, and therefore the number of parts is reduced.
- the bulging portion 11 b may be formed in the pipe main body 11 a by using the ring body 13 of FIG.
- connection cylinder portions 33 f may be formed at both ends of the joint body 33 a.
- the inner diameter of the tube body 11a at the portion where the inner diameter of the cylindrical body 34 and the inner diameter of the tube body 11a are not enlarged may not be substantially the same.
- a seal structure may not be formed between the outer peripheral surface of the cylindrical body 34 and the inner peripheral surface of the pipe main body 11a.
- connection cylinder 44d may be formed only at one end of the joint body 44a.
- the inner diameter of the expanded inner sleeve 25 and the inner diameter of the inner sleeve 25 at the part where the inner diameter of the pipe body 11a is not expanded may not be the same. You may. Further, a seal structure may not be formed between the outer peripheral surface of the inner sleeve 25 and the inner peripheral surface of the pipe body 11a. A seal structure may not be formed between the inner peripheral surface of 1a and the inner peripheral surface of the outer sleeve 45 and the outer peripheral surface of the pipe body 11a.
- the outer sleeve 45 is omitted, and the bulging portion lib is formed by the outer surface of the tube body 11a. 8 may be engaged with the bulging portion 11b of the pipe body 11a to prevent the pipe body 11a from coming off the joint body 44a.
- the inner sleeve 25 and the outer sleeve 25 are joined by joining the engagement flange 25b of the inner sleep 25 and the outer flange 45b of the outer sleeve 45. It may be formed integrally with the step 45.
- connecting cylinders 14 may be formed at both ends of the joint body 55 a.
- the outer sleep 45 is omitted, and the bulging portion 11 b formed on the outer surface of the pipe body 11 a is engaged with the engaging surface of the sleep 5 6.
- the tube body 11a may be prevented from coming off from the joint body 55a by engaging with 56b.
- the inner diameter of the pipe body 11a at a portion where the inner diameter of the pipe body 11a is not expanded is Even if the inner diameter of the enlarged cylinder 34 is not the same.
- a seal structure may not be formed between the outer peripheral surface of the cylindrical body 34 and the inner peripheral surface of the main body 11a.
- a seal structure may not be formed between the outer peripheral surface, the inner peripheral surface of the pipe main body 11a, the inner peripheral surface of the outer sleep 45, and the outer peripheral surface of the pipe main body 11a.
- the engagement sleeve 56 may be formed integrally with the divided body 56 a.
- FIG. 31 shows a modification of the embodiment of FIGS. 9 to 13. The present embodiment is different from the first embodiment in the configuration of the cylinder 34 and the joint 33 inserted into the pipe main body 11a of the water pipe 11 shown in FIG.
- the cylindrical body 3 has an extending portion 34a extending so as to expand outward.
- the outer diameter of the end face of the connection tubular portion 33 f of the joint body 33 a has a tapered shape that becomes smaller toward the center of the joint body 33 a.
- a locking step portion 33e extending along the circumferential direction fc of the slip-off prevention sleep 33b is formed on the inner peripheral surface at the center of the slip-off prevention sleeve 33b.
- a bulge portion 1 1 b to the outer surface of the tube body 1 1 a ⁇ been inside diameter of the cylindrical body 3 4 inward is enlarged of the tube body 1 1 a, also the inner diameter of the extending portion 3 4 a It is enlarged.
- the inner peripheral surface of the extension portion 34a is brought into contact with the end surface of the joint body 33a, and in this state, the detachment prevention sleep 33b is screwed into the joint body 33a.
- the extension part 3 4a is sandwiched between the left end face of a and the locking step part 3 3e of the stopper sleeve 3 3b, and the bulging part 1 1 on the inner surface of the stopper sleeve 3 3b b engages. Therefore, the pipe body 11a is prevented from coming off from the slip-off prevention sleeve 33b attached to the joint body 33a. That is, the water pipe 11 is connected to the joint 33 in a state where it is prevented from falling off. At this time, between the inner peripheral surface of the extension portion 34a and the left end surface of the joint body 33a, and between the inner peripheral surface of the extension portion 34a and the inner peripheral surface of the slip prevention slip 33b. A seal structure is formed between them.
- the seal structure between the water pipe 11 and the joint body 33a can prevent the fluid from leaking out between the pipe body 11a and the joint body 33a;
- the joint 33 in the embodiment of FIGS. 9 to 13 the joint 7 shown in FIGS. 32 and 33 is used.
- the joint 7446 includes a joint body 747 formed of a synthetic resin, a mounting pin 7448 as an attachment body, and a mounting cylinder 749 as an engagement body.
- the joint body 747, the mounting pin 7448, and the cylindrical body 749 may be made of metal. It should be noted that also in the present embodiment, up, down, left and right in the following description correspond to up, down, left and right in the drawings.
- the joint body 747 has a substantially cylindrical shape. At the left end of the hand body 747 is formed a connecting cylinder 747a, and at the right end of the joint body 747 a pipe (not shown) can be connected.
- connection cylinder 747a At the left end of the connection cylinder 747a, an accommodation recess 747b is formed at a position facing the center of the axis of the connection cylinder 747a. At the opposite positions on the left end of the connecting cylinder 747a, mounting holes 7 that allow the mounting pins 748 to penetrate so that the mounting pins 7478 can be attached to the connecting cylinder 7474a. 4 7c is formed. A female screw (not shown) is formed on the inner peripheral surface of the mounting hole 747c.
- a locking surface 747d extending along the circumferential direction of the joint body 747 is formed on the peripheral surface.
- a sealing member 17 is mounted on the locking surface 747d.
- the outer peripheral edges on the left side of the mounting cylinder 749 extend outward at right angles to the axis of the mounting cylinder 749, respectively.
- An engagement piece 749a extending parallel to the axis is formed.
- the end of 749 that is, the right end of the mounting cylinder 749 is inserted into the connection cylinder 747a, and the engagement piece 749a is housed in the housing recess 747b. Then, insert the mounting pin 7 4 8 into each mounting hole 7 4 7 c, screw the male screw 7 4 a into the female screw of the mounting hole 7 4 7 c, and connect the mounting pin 7 4 8 to the connecting cylinder.
- the engaging pin 7498 pushes the engaging piece 749a inwardly of the connecting cylindrical portion 747a, and the right end face of the mounting cylindrical body 749 is moved to the outer sleeve 45.
- the outer peripheral flange 32c is engaged with the outer peripheral flange 32c, and the outer peripheral flange 32c is sandwiched between the right end face of the mounting cylinder 749 and the inner surface of the connecting cylinder 747a.
- the mounting cylinder 7449 is positioned so that it does not come off from the inside of the joint body 747 by the mounting pin 7478, and the outer sleep 45 is moved into the joint body 7447 by the braided cylinder 74. Is positioned.
- connection structure in which the water pipe 11 is connected to the joint 746 is formed by the connection cylinder portion 747a, the mounting cylinder 749, and the mounting pin 7448.
- a water pipe 11 with an end structure 10 is formed between the end of the pipe body 11a and the connecting cylinder 747a of the joint 746 to connect it to the joint 746.
- a connecting member 754 as an integral inner member may be attached to the pipe main body 11a to form a seal structure on the water pipe 11.
- the connection member 754 has a substantially cylindrical shape and is formed of metal.
- a connection flange 754 as a fixing portion protruding outward along the circumferential direction of the connection member 754 is formed.
- the connection flange 754b has two holes 754c through which the bolt 755 can pass.
- connection member 754 when the connection member 754 is pressed against the inner peripheral surface of the pipe main body 11a, a seal structure is formed on the inner peripheral surface of the pipe main body 11a, and the through-hole having the end structure 10 is formed.
- a water tube 11 is formed.
- a port 755 is inserted into a through hole 7554c of each connection member 754. Then, nuts 756 are screwed into each port 755 to connect the connection members 754 to each other. As a result, the water pipes 11 can be connected to each other.
- the water pipe 11 provided with the seal structure in advance and having the end structure 10 may be carried into the construction site, and the water pipes 11 may be connected to each other at the construction site.
- the inner diameter may be expanded by using a diameter expanding tool 760 shown in FIG.
- the expanding tool 760 is a cylindrical body of the embodiment of FIG. 34, equipped with a pull-out body 22 and pull-out pins 23 shown in Fig. 3 (b).
- the outer diameter of the enlarged portion 22 a of the drawn body 22 is larger than the inner diameter of the cylindrical body 34.
- the drawn-out body 22 and the cylindrical body 34 of the expanding tool 760 are inserted into the pipe main body 11a. Then, when the pull-out pin 23 was pulled away from the pipe body 11a using a special pull-out tool, the pull-out pin 23 moved and the head 23a of the pull-out pin 23 was locked. The drawn body 22 is pulled in a direction away from the pipe body 11a. Then, since the outer diameter of the outer peripheral surface of the drawn body 22 increases toward the left end side of the drawn body 22, the inner peripheral surface of the cylindrical body 34 as the drawn body 22 moves. The outer diameter of the drawn body 22 that comes into contact with the cylinder increases, and the inner diameter of the cylindrical body 34 increases.
- a seal structure is formed between the outer peripheral surface of the cylinder 34 and the inner peripheral surface of the pipe body 11a as shown in FIG.
- the tubular body 34 is pressed against the inner peripheral surface of the tubular body 11a, so that the tubular body 34 remains in the tubular body 11a, and the drawn body 22 is replaced with the tubular body 1.
- a sealing structure and a bulging portion 11 b are formed at the end of the pipe body 11 a by the cylindrical body 34, and the water pipe 11 having the end structure 10 is formed.
- a water pipe 11 in which a seal structure is formed in advance on the pipe body 11a may be formed.
- connection body 11 may be carried into the construction site of the water pipe 11 to connect the water pipe 11 with the seal structure formed in advance to the connection body.
- Protrusion 1 1b is formed Therefore, it is preferable to use a connection body whose bulging portion 11b is formed so as not to hinder the connection, for example, as shown in FIG.
- a joint 770 having substantially the same structure as that of Fig. 9 is used as the joint body 33a, a fixed sleeve 771 as an attachment body, and an engagement as an engagement body. It is equipped with a sleep 7 72.
- the fixed sleep 7 7 1 and the engagement sleep 7 7 2 It is formed of a synthetic resin.
- the fixed sleeve 771 and the engagement sleeve 772 may be formed of metal.
- the engagement sleeve 772 is formed by assembling a pair of divided bodies having a semi-cylindrical shape (see FIG. 2 (b)).
- the divided bodies are integrated by connecting one side edge to each other, and are formed such that the divided bodies can be separated or assembled around the joint.
- the bulging portion 11b can be engaged with the inner peripheral surface of the engaging sleep 772.
- An engaging stepped portion 772b as a portion is formed along the circumferential direction of the engaging sleep 772. As shown in FIG.
- an inner hole 771a having a diameter slightly larger than the outer diameter of the left end of the engagement sleeve 772 is formed on the left end side of the fixing sleeve 771.
- the inner diameter of the inner hole 771a is slightly larger than the outer diameter of the bulge lib formed in the pipe body 11a.
- the engagement sleeve 772 is arranged on the outer peripheral side of the bulging portion 11b in a state of being divided into a pair of divided bodies. Then, a pair of split bodies are assembled so that the bulging portion lib engages with the engaging step portion 7 2 b to form an engaging sleeve 7 72, and the pipe body 11 a Attach the engagement sleeve 7 7 2.
- the end of the pipe main body 11a to which the engagement sleeve 772 is attached is inserted into the connection cylindrical portion 33f of the joint main body 33a. Screw the female thread 7 7 1 b of the fixing sleeve 7 7 1 into the male thread 3 3 g of the joint body 33 a and fit it.
- the fixing sleeve 7 7 1 is engaged with the joint body 3 3 a
- the inner peripheral surface of the inner hole 7 7 1 a is gradually pressed against the outer peripheral surface of the engaging sleeve 7 2, and the engaging sleeve 7 7 2 is reduced in diameter.
- the engagement sleeve 772 is pressed inwardly into the connection tube portion 33f, and the pipe body 111 with which the engagement step portion 772b of the engagement sleeve 772 engages. a is also pressed inwardly into the connection cylinder 33 f.
- the right end face of the pipe main body 11a is brought into contact with the second contact face 18 and the right end face of the engagement sleeve 772 is brought into contact with the end face of the joint body 33a.
- the engagement sleep 772 is retained inside the fixed sleeve 771, which is attached to the joint body 33a, so that the fixed sleep 771 is prevented from coming off. Then, the joint body 33 a, the engagement sleeve 772, and the fixed sleeve 771 are assembled to form the joint 7770.
- the connecting step 7 7 2 b of the engaging sleeve 7 7 2 engages with the bulging portion 1 1, so that the pipe body 1 1 a is connected to the connecting tube 3 3 f in a state where it is prevented from coming off.
- the water pipe 11 having the end structure 10 is connected to the connection 770. Since the inner hole 7 7 1a of the fixing sleeve 7 7 1 is larger than the outer diameter of the bulging portion 1 1b, the bulging portion 1 1b It is possible to prevent obstruction, and the connection work between the water pipe 11 and the joint 770 can be easily performed. As a result, the end structure 10 can be easily formed at the construction site of the water pipe 11 and the joint 770 compared with the case where the seal structure is formed in the water pipe 11.
- an end structure 10 is formed in the water pipe 11 using an end forming member 780 in which the inner body and the outer body are formed. Structure 1 0 May be connected to the connecting body.
- the vertical and horizontal directions of the water pipe 11 and the end forming member 780 correspond to the vertical and horizontal directions in FIG.
- the metal end forming member 780 has a substantially cylindrical shape.
- the end forming member 780 includes an annular part 780 a as an integral part of the inner part, and an outer part as an annular outer body located radially outward of the part 780 a. Unit 780b.
- the end forming member 780 between the inner part 780a and the outer part 780b has an annular groove 780c formed in an annular shape.
- the end of the pipe body 11a is inserted into the annular groove 780c.
- the inner diameter of the inner part 780a is smaller than the inner diameter of the pipe body 11a.
- the inner part 780a is inserted inside the pipe body 11a, and the outer part 780b is the pipe body 11a. It is arranged radially outside of the.
- a synthetic resin insertion member 784 fitted between the inner peripheral surface of the annular groove 780c and the outer peripheral surface of the pipe body 11a inserted into the annular groove 780c.
- the joint 782 as a connecting body to be connected to the end forming member 780 has a substantially cylindrical shape and is made of synthetic resin.
- the joint 782 is provided with a connection tube portion 782a.
- the joint 782 may be formed of metal.
- the interposition member 784 is attached to the pipe body 11a, and then, as shown in FIG. As shown in (5), a diameter-enlarging member 781 for enlarging the inner part 780a of the end forming member 780 is inserted into the pipe main body 11a.
- the diameter of the expanding member 7 8 1 is almost the same as the inner diameter of the pipe body 11a.
- a gripping portion 781b extending from the enlarged head 781a in parallel with the axis of the pipe body 11a.
- the end of the pipe body 11a is inserted into the annular groove 780c of the end forming member 780, and the inner part 780a is inserted inside the pipe body 11a.
- the end forming member 780 is attached to the pipe main body 11a such that the outer portion 780b is arranged radially outside the pipe main body 11a.
- an interposition member 784 is fitted between the inner peripheral surface of the annular groove 78O.c and the outer peripheral surface of the pipe main body 11a, and then, the grip portion 781b is gripped.
- the expanding member 780 1 is pulled in a direction away from the pipe main body 11a, and the expanding head 781a passes through the inner portion 780a.
- the inner part 780a, the pipe body 11a, the interposition member 784, and the outer part 780b are formed by the enlarged diameter head 781a having the same diameter as the inner diameter of the pipe body 111a.
- the inner peripheral surface of the part of the inner part 780a and the inner peripheral surface of the interposition member 784 are pressed against the inner and outer peripheral surfaces of the pipe main body 11a to form a seal structure.
- a seal structure is formed at the end of the pipe main body 11a, and the water pipe 11 having the end structure 10 is formed.
- the extending portion 780d extends from the end face of the pipe main body 11a.
- the extension 780d is connected to the joint tube 782 of the joint 782. Insert into a. Then, the pair of seal members 17 presses against the inner peripheral surface of the connection cylinder portion 782a, and further, the elastic force of the seal member 17 itself causes the inner peripheral surface of the connection cylinder portion 782a to be pressed. Press outward. Therefore, the end forming member 780 is connected to the connecting tubular portion 782a by the extending portion 780d, and the joint 782 is connected to the water pipe 11. By using the end forming member 780, a sealing structure can be formed in the pipe main body 11a, and the water pipe 11 can be easily connected to the joint 782.
- the end forming member 780 is connected to the water pipe 11 to form a seal structure.
- the water pipe 11 having the end structure 10 is carried into the construction site, and the joint 782 is connected. It may be connected to the water pipe 11.
- the interposition member 784 may be omitted.
- the size of the annular groove 780c is set so that only the pipe main body 11a is fitted into the annular groove 780c. Adjusted. Further, an elastic member such as a coil spring and a panel member is interposed between the outer peripheral surface of the pipe body 11a and the inner peripheral surface of the annular groove 780c instead of the interposition member 784. Is also good.
- the elastic member presses both the outer peripheral surface of the pipe main body 11a and the inner peripheral surface of the annular groove 780c, respectively, so that the water pipe 11 from the annular groove 780c is pressed. Omission can be regulated.
- a joint 860 as a connecting body may be connected to the water pipe 11 having the end structure 10 shown in FIG. 40 (a).
- the pipe body 11a has a rectangular cross section and an annular shape, and a ring body 81 1 made of metal and formed as an inner metal. 3 is attached using the former 21.
- a swelling portion 11b is formed in the pipe main body 11a by the ring body 813, and a water pipe 11 having the end structure 10 is formed.
- the joint 860 of the present embodiment will be described.
- the joint 860 is a substantially cylindrical joint body 861, a mounting sleeve 8667, an input sleeve 8668, and engagement.
- the joint body 861, the mounting sleeve 8667, the insertion sleeve 8668, and the engagement sleeve 8669 are each formed of synthetic resin.
- joint body 861 the attachment sleeve 8667, the insertion sleeve 8668, and the engagement sleeve 8669 may be formed of metal.
- connection tube portions 861a to which the pipe body 11a can be connected are formed.
- Male threads 861 b are formed on the outer peripheral surfaces of both ends of the joint body 861, respectively. I have.
- a first contact surface 861c is formed in the joint body 861, and protrudes inward along the circumferential direction of the joint body 861.
- a contact surface 861d is formed.
- a pair of seal members 17 is mounted on the second contact surface 861-1d.
- the attachment sleeve 8 6 7 as an attachment has a substantially cylindrical shape.
- a female screw 867a that can be screwed into a male screw 861b is formed on the inner peripheral surface at the —end (right side in FIG. 40 (a)) of the mounting sleeve 867.
- the other end of the mounting sleeve 8 6 7 (Fig. 40
- An inner peripheral edge 867b extending inward along the circumferential direction of the attachment sleep 867 is formed on the inner peripheral edge of the left side in (a)). Note that the diameter of the opening at the other end of the attachment sleeve 867 is slightly larger than the outer diameter of the bulging portion 11 b formed in the water pipe 11.
- the insertion sleeve 8 6 8 has a substantially cylindrical shape. The inside diameter and outside diameter of the other end (left side in FIG. 40 (b)) are larger than the inside diameter and outside diameter of one end (right side in FIG. 40 (a)) of the input sleep 8686.
- a locking edge 68 a extending along the circumferential direction of the insertion sleeve 686 is formed on the inner peripheral edge of one end of the insertion sleep 68.
- an engagement surface 8668 b having an outer diameter larger than one end of the insertion sleeve 868 is formed on the inner peripheral surface substantially at the center of the insertion sleeve 868.
- an inclined surface 868c is formed, which is inclined obliquely into the insertion sleep 868 from the open end of the other end of the insertion sleep 868.
- the engagement sleep 869 as an engagement body having an engagement portion is a substantially cylindrical tubular body.
- the engagement sleeve 869 has a C-shaped cross section in which a part is cut out along the axial direction.
- the outer diameter of the outer peripheral surface of one end (right side in FIG. 40 (a)) of the engagement sleeve 869 decreases in diameter toward the same end.
- the attachment sleeve 867 is connected with the insertion sleeve 8668 and the engagement sleeve 8669 stored in the fitting body 8661. It is screwed to the hand body 8 6 1.
- the intervening member 8 between the joint body 861 and the bracing sleeve 867 is used.
- the interposition member 870 includes an interposition portion 870a having a C-shaped cross section, and a grip portion 870b extending from the interposition portion 870a.
- the inside diameter of the interposition part 870a is almost the same as the outside diameter of the male screw 861b of the joint body 861. As shown in Fig. 40 (a),
- the inner part 25a of the inner sleeve 25 is fitted to the end of the pipe body 1 1a on which the bulging portion 1 1b is formed, and the engaging flange is fitted to the end face of the pipe body 11a. Engage 25b.
- an attachment sleeve 867 is attached to the end of the pipe main body 11a on which the bulging portion 11b is formed.
- the diameter of the opening at the other end of the attachment sleep 867 is larger than the outer diameter of the bulging portion 11b, it passes through the bulging portion lib and is attached to the tube body 11a deep.
- the sleeve 8 6 7 can be moved.
- the engagement sleeve 869 and then the insertion sleeve 8668 are attached to the tube body 11a.
- the locking edge 868 a of the insertion sleeve 8668 is locked to the bulging portion 11 b, and the movement of the engaging sleeve 869 to the back of the pipe body 11 a is restricted. .
- one end of the engaging sleeve 869 is guided into the insertion sleeve 868 by the sloped surface 868c of the inserting sleep 868 to be reduced in diameter, and the insertion sleeve 86 is also inserted. ⁇ 8.
- one end surface of the engagement sleeve 8669 is engaged with the engagement surface 8668 of the insertion sleep 8668. b, and is sandwiched between the engaging surface 8668b and the inner peripheral edge 867b of the attachment sleep 867.
- one end face of the engagement portion of the engagement sleeve 869 is engaged with the bulging portion 11b.
- the sealing member 17 is pressed against the outer peripheral surface of the pipe main body 11a, so that the space between the joint main body 861 and the water pipe 11 is sealed well.
- the inner peripheral edge 867b is engaged with the engagement sleep 869 in a state where the attachment sleep 867 is screwed to the joint main body 861.
- the inner peripheral edge 867 b prevents the engaging sleep 869 engaged with the bulging portion lib from coming out of the mounting sleeve 867, and the engaging sleep 8687 prevents the engaging sleep.
- the engagement between the leave 869 and the bulge lib is maintained.
- a forming tool 821 provided with a cylindrical member 859 as shown in FIG. 42 may be used.
- An inner circumferential ridge 871 projecting inward is formed on the inner circumferential surface of the distal end portion of the cylindrical member 859.
- a tubular member 859 is fitted inside one end of the pipe main body 11a, and only the inner peripheral ridge 871 is expanded in diameter, as shown in FIG.
- the bulging portion 11b may be formed.
- the bulging portion 11b may be formed by enlarging the diameter of a part of the circumferential surface of the cylindrical member 859 along the axial direction.
- a tubular member 859 is fitted inside both ends of the pipe body 11a, and the inner peripheral ridge 871 is expanded to form bulges lib at both ends of the pipe body 11a.
- the circumferential ridge 871 is expanded in diameter, and as shown in Fig.
- the pipe main body 11a is extended in the circumferential direction by the inner circumferential ridge 871.
- a bulged portion 11b protruding outward is formed on the outer surface of the tube main body 11a.
- the water pipe 11 having the bulging portion 11b formed by using the cylindrical member 859 having the inner peripheral ridge 871 is a joint 97 as a connecting body shown in FIG. Connected to the state where it was retained in 2.
- the joint 972 is a part for connecting the water pipes 11 or a part of the branch joint (header 1).
- the joint 972 includes a substantially cylindrical joint body 973, a fixed sleeve 974 screwed to the joint body 973, a split ring 975, and a ring member 976. Including.
- connection tube portions 9977 are formed, respectively.
- a first mounting surface 978 is formed on the inner peripheral surface at the back of each connection cylinder 9977.
- the inner peripheral surface of the connecting cylinder part 9777 located on the left side of the joint body 973 with respect to the first mounting surface 978 is more inward than the first mounting surface 978.
- a second mounting surface 979 having a large diameter and a large outer diameter is formed. O-rings 980 made of rubber are arranged on the first mounting surface 978 and the second mounting surface 979, respectively.
- the connecting cylinder 977 located on the left side of the joint body 973 from the second mounting surface 979, there is a contact surface with an inner diameter and an outer diameter larger than the second mounting surface 979. 9 8 1 is formed.
- a male screw 982 is formed on the outer peripheral surface of the connection tube portion 977.
- the fixed sleeve 974 as an attachment body has a substantially cylindrical shape, and is formed of a synthetic resin.
- a female screw 974a that can be screwed to the male screw 982 is formed.
- a locking surface 974 b is formed on the inner peripheral surface of the fixed sleeve 974 to protrude inward.
- the fixed sleep that extends to the inner peripheral edge of the locking surface 974b The diameter of the inner peripheral surface of the locking surface 974b decreases from the locking surface 974b side toward the left end of the fixing sleeve 974.
- a tapered surface 974c is formed.
- a locking rib 974 d is provided on the inner peripheral edge at the left end of the fixing sleeve 974 so as to protrude inward.
- the right end surface of the split ring 975 as an engaging body functions as an engaging portion that engages with the bulging portion lib.
- the split ring 975 is a cylindrical body made of synthetic resin, and has a C-shaped cross section with a portion cut away along the axial direction.
- the split ring 975 has a tapered shape whose outer diameter decreases from the right end to the left end.
- the ring member 976 has an annular shape and is formed of metal.
- the ring member 976 When the ring member 976 is held between the contact surface 981 and the tapered surface 974c, the inner peripheral edge of the ring member 976 and the second mounting surface 9
- the O-ring 980 is held between 790 and 790.
- the split ring 9 When the fixing sleeve 974 in which 75 is housed is screwed into the joint body 973, the joint 972 is assembled. At this time, the left end face of the split ring 975 is locked by the locking rib 974d of the fixed sleeve 974, and the split ring 975 is prevented from coming out of the fixed sleep 974.
- the outer peripheral surface of the engagement flange portion 25 b comes into contact with the inner peripheral surface of the split ring 975, and the pipe body 11 a is inserted into the split ring 975, and the split ring 9 7 5
- the diameter of the bulge is expanded, and the bulging portion 1 1b is allowed to pass through the split ring 975.
- the water pipe 11 is inserted into the joint 972 until the end face of the engagement flange 25b comes into contact with the O-ring 980 mounted on the first mounting surface 9778.
- the bulging portion 11b is located on the inner side of the joint body 973 from the right end face of the split ring 975, and is disposed at a position corresponding to the ring member 976.
- the tapered surface 9 7 4 c is pressed against the outer peripheral surface of the split ring 9 7 5, and the split ring 9 7 5 gradually decreases in diameter. Is done.
- the fixing sleeve 974 is screwed into the connecting cylinder 9977, the inner surface of the split ring 975 is pressed against the outer peripheral surface of the pipe body 11a, and the right end of the split ring 975. The surface is arranged at a position where it can be engaged with the bulging portion 11b.
- the O-ring 980 mounted on the first mounting surface 9778 presses against the engagement flange 25b, and the O-ring mounted on the second mounting surface 9779 is pressed. 980 is pressed against the outer peripheral surface of the pipe body 11a.
- the bulging portion 1 1 b is engaged with the force split ring 975, and the split ring 975 force S is housed so as not to be able to slip out of the fixed sleeve 974. Therefore, bulge 1 1 b Is maintained in engagement with the split ring 975, the pipe body 11a is prevented from falling out of the connecting cylinder 9977, and the water pipe 11 is prevented from falling out of the joint 972.
- an engagement flange portion 25b is provided on an end face of the tube main body 11a. For this reason, the entire circumferential surface of the end face of the engagement flange 25 b is pressed against the O-ring 980 disposed on the first mounting surface 9778, and It is possible to reliably seal between the O-ring 98 and the ring. For example, as in the case where the engagement flange 25 b is not provided and the end face of the pipe body 11 a is cut obliquely, the O-ring 980 and the end face of the pipe body 11 a It is possible to eliminate the possibility that water leaks from between the two.
- the connecting operation of the water pipe 11 can be performed in a state where the members forming the joint 972 are assembled.
- the fixed sleep 974, split ring 975 and ring member 976 are attached to the water pipe 11 respectively, then they are assembled to form a joint 972, and then connected to the water pipe 11
- connection work between the water pipe 11 and the joint 972 can be simplified.
- the connection work of the water pipe 11 was performed with the joint body 973, the fixing sleeve 974, the split ring 975, and the ring member 976 assembled. Connection work may be performed.
- the ring member 9 7 The water pipe 11 is inserted into the connection cylinder 977 that is housed so that 6 contacts the contact surface 981. Subsequently, the fixed sleep 974 may be screwed into the connection cylinder 9977 to form a joint 972, and the water pipe 11 may be connected to the joint 972.
- the joint body 973 and the fixing sleeve 974 may be formed of metal, and the ring member 976 may be integrally formed with the joint body 973.
- the split ring 975 is formed of a synthetic resin.
- connection body 972 A as a connecting body shown in FIG. 44 is connected to the water pipe 11 having the end structure 10 formed using the ring body 13 of the embodiment of FIGS. 1 to 5.
- the configuration of the joint 972A is the same as the configuration of the joint 972 in FIG. This embodiment also has the same advantages as the joint 972 of FIG. 43 described above.
- a ring member formed by winding a metal wire in an annular shape may be used in place of the ring body 13. In such a configuration, the inner inner piece can be easily and inexpensively formed.
- End structures 10 may be formed at both ends of the water pipe 11. In each of the embodiments of FIGS.
- the end structure 10 is formed in the water pipe 11 at the construction site where the water pipe 11 and the connecting body are connected.
- the end structure 10 may be formed in advance at 11.
- the water pipe 11 having the end structure 10 may be carried into the construction site to connect the water pipe 11 to the connector.
- the water pipe 11 and the connector can be immediately connected.
- the size of the bulging portion 11b can be reduced, and the sheath of the water pipe 11 having the end structure 10 can be formed. Insertion into the pipe can be performed easily.
- a metal layer may be provided within the thickness of the pipe main body 11 a of the synthetic resin water pipe 11. With this configuration, the metal layer can prevent oxygen from passing through the water pipe 11. Therefore, it is possible to prevent a problem that a fluid such as water flowing in the water pipe 11 contains oxygen, and the oxygen causes a metal connector to be exposed.
- a fluid such as water flowing in the water pipe 11 contains oxygen, and the oxygen causes a metal connector to be exposed.
- the inner peripheral shape of the main sleeve 36 is formed in an octagonal cross section or a hexagonal cross section
- the head of the movable port 38 is formed in an octagonal cross section. It may be formed in a shape or a hexagonal cross section.
- the water pipe 11 having the end structure 10 may be connected to a branch joint (header), a faucet device, or the like.
- a branch joint header
- a faucet device or the like.
- at least a part of the diameter of the pipe body 11 a corresponding to the ring body 13 or the cylindrical body 34 as the inner body is enlarged. It may be.
- the inner body may be formed of a member having a semi-annular shape, for example, a member having a C-shaped cross section, and a bulging portion 11 b partially protruding from the outer periphery of the tube body 11 a may be formed. .
- the insert 24 of the forming tool 21 may be omitted, and the forming tool 21 in which the ring body 13 is attached to the drawn body 22 may be used.
- the integral tool may be expanded by using other forming tools such as the forming tools 21, 11 1, 21 1 and the expanding tool 35 used in each embodiment.
- the shaft portion 114b is held by hand, and the extraction body 22 is manually connected to the pipe body 11a. It may be pulled out from inside. Further, the shaft portion 114b may be held by a tool such as pliers, pliers, or the like, and the drawn body 22 may be pulled out.
- a tool such as pliers, pliers, or the like
- the inserted body 24 or the cap 26 Omitting 0, the forming tool 111 may be formed by the drawn body 22 and the ring body 13 or the drawn body 22 and the inner sleeve 250. Further, in the drawing body 22, the drawing pin 23 may be omitted.
- the seal structure and the function capable of reducing the flow loss is formed in the pipe main body 11a. You can expand the diameter of the ring 13 as shown.
- a ring member formed by spirally winding a metal wire may be used as an inner inner member instead of the ring body 13. Further, the ring body 13 may be formed in a square ring shape.
- the left edge of the inner part 250a is not folded to form the protruding part 250c, and the left edge of the inner part 250a is not formed. May be formed to have a large thickness so as to protrude toward the inner peripheral side to form the ridge portion 250c.
- the ridge portion 250c may be formed at the center or any position along the axial direction of the inner portion 250a.
- the forming tool 111 may be formed by disposing a cylindrical body having a cylindrical shape as an inner body between the drawn body 22 and the inserted body 24. .
- the ring body 13 does not have to be adhered to the insert 24, and in the state where the extraction body 22 is inserted into the insert 24, the insert 2 A ring body 13 may be arranged between the end face of 4 and the drawn body 22.
- the through support portion 115b or the through support portion 260b may be omitted.
- the shaft portion 114b of the extraction pin 23 may be supported in each through hole 115d or the insertion hole 260d.
- the extraction pin 23 and the extraction member 22 may be integrally formed by joining the extraction pin 23 to the extraction member 22 by welding or the like. Also, when forming the drawn body 22, the shaft may be extended from the drawn body 22.
- the pullout pin 23 may be omitted, the rivet may be passed through the insert 24, and the rivet may be inserted into the pullout 22. .
- the rivet may be passed through the cap 260 and the rivet may be inserted into the drawn body 22.
- the leading end of the rivet is expanded using a rivet, and the rivet is locked to the engaging edge portion 113c of the drawn body 22.
- the rivet may be pulled out of the pipe main body 11a using a riveter, and the drawn body 22 may be pulled out of the pipe main body 11a.
- the extraction pin 23 may be omitted and a keyhole-shaped passage hole may be formed in the inner bottom surface of the extraction member 22.
- a metal rod or the like bent into an L shape into the passage hole
- the tip of the metal rod is locked to the inner bottom surface of the locking edge 113c.
- the metal rod may be pulled away from the tube body 11a to pull out the drawn body 22 from the inside of the tube body 11a.
- the drawn body 22 is formed in a substantially columnar shape, an enlarged diameter portion 22 a is formed at an end of the drawn body 22, and the drawn body 22 is formed.
- the shaft may be extended from the shaft.
- the diameter of the enlarged diameter portion 22a is larger than the inner diameter of the ring body 13 or the ridge portion 250c.
- a stepped portion may be formed between the enlarged diameter portion 22 a and the small diameter portion 22 b of the drawn body 22.
- the support portion 24c of the insert 24 or the support portion 260c of the cap 260 may be omitted.
- the drawing body 22 and the ring body 13 are separately provided, and when forming the end structure 10, the ring body 13 is assembled into the drawing body 22. You can attach it.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2002360021A AU2002360021A1 (en) | 2001-12-25 | 2002-12-25 | End part structure of water passing tube, water passing tube with the end part structure, structure of connection between water passing tube and connection body, and method of forming end part structure of water passing tube |
| KR10-2004-7010049A KR20040071251A (ko) | 2001-12-25 | 2002-12-25 | 통수관의 단부구조, 동 단부구조를 구비한 통수관,통수관과 접속체와의 접속구조, 및 통수관의 단부구조의형성방법 |
| EP02793380A EP1460324A4 (en) | 2001-12-25 | 2002-12-25 | FINISHING CONSTRUCTION FOR WATER PIPING PIPE, WATER PIPING PIPE WITH FINISHING CONSTRUCTION, CONSTRUCTION FOR CONNECTING A WATER PIPING PIPE WITH A CONNECTING BODY AND METHOD FOR PRODUCING A FINISHING CONSTRUCTION FOR A WATER PIPING PIPE |
| US10/499,836 US7350831B2 (en) | 2001-12-25 | 2004-06-18 | End structure of water pipe |
Applications Claiming Priority (20)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001392476 | 2001-12-25 | ||
| JP2001-392476 | 2001-12-25 | ||
| JP2001-394458 | 2001-12-26 | ||
| JP2001394458 | 2001-12-26 | ||
| JP2001-398470 | 2001-12-27 | ||
| JP2001398470 | 2001-12-27 | ||
| JP2002-117955 | 2002-04-19 | ||
| JP2002117955 | 2002-04-19 | ||
| JP2002347705 | 2002-11-29 | ||
| JP2002347704 | 2002-11-29 | ||
| JP2002348300 | 2002-11-29 | ||
| JP2002-347704 | 2002-11-29 | ||
| JP2002-347705 | 2002-11-29 | ||
| JP2002-348300 | 2002-11-29 | ||
| JP2002362317A JP2004225713A (ja) | 2001-12-25 | 2002-12-13 | 通水管の接続端部、同接続端部を備えた通水管、接続端部を形成するインナー体並びに接続端部を備えた通水管と接続体との接続構造及び通水管の接続端部の形成方法 |
| JP2002-362317 | 2002-12-13 | ||
| JP2002-362315 | 2002-12-13 | ||
| JP2002362316A JP4198453B2 (ja) | 2001-12-26 | 2002-12-13 | 通水管の端部構造、同端部構造を備えた通水管並びに同通水管と接続体との接続構造及び通水管の端部構造の形成方法 |
| JP2002-362316 | 2002-12-13 | ||
| JP2002362315A JP4245127B2 (ja) | 2001-12-27 | 2002-12-13 | 通水管と接続体との接続構造 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003056227A1 true WO2003056227A1 (fr) | 2003-07-10 |
Family
ID=27580559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2002/013509 Ceased WO2003056227A1 (fr) | 2001-12-25 | 2002-12-25 | Structure de portion d'extremite de conduite d'eau, conduite d'eau comportant une structure de portion d'extremite, structure de raccordement entre une conduite d'eau et un corps de raccordement, et procede de formation de structure de portion d'extremite d'une conduite d'eau |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7350831B2 (ja) |
| EP (1) | EP1460324A4 (ja) |
| KR (1) | KR20040071251A (ja) |
| CN (1) | CN100406797C (ja) |
| AU (1) | AU2002360021A1 (ja) |
| WO (1) | WO2003056227A1 (ja) |
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| KR100826622B1 (ko) * | 2000-05-12 | 2008-05-02 | 폴 코포레이션 | 필터 |
| US20070215828A1 (en) * | 2006-03-17 | 2007-09-20 | Conbraco Industries, Inc. | Universal configurable valve |
| JP4992098B2 (ja) | 2007-06-05 | 2012-08-08 | 株式会社水研 | ノンボルト継手構造およびノンボルト継手構造を形成する方法 |
| EP2085672B1 (en) * | 2007-10-19 | 2014-05-21 | O.N. Industries CO. LTD. | Connection mechanism between thin-wall stainless steel tube and joint |
| DE102007059182B4 (de) * | 2007-12-06 | 2017-04-13 | Viega Gmbh & Co. Kg | Verfahren zum Herstellen einer unlösbaren Verbindung sowie unlösbare Verbindung zwischen einem Fitting und einem Rohr, Fitting für ein Rohr mit einem vorgegebenen Innendurchmesser und lösbare Verbindung zwischen mindestens einem Fitting und einem Fittinggrundkörper |
| USD623560S1 (en) * | 2009-09-10 | 2010-09-14 | Ratech | Crush collar |
| US20110169259A1 (en) * | 2010-01-14 | 2011-07-14 | Gm Global Technology Operations, Inc. | Tube fitting connection |
| US11628267B2 (en) | 2010-08-04 | 2023-04-18 | Medline Industries, Lp | Universal medical gas delivery system |
| DE102011014323A1 (de) * | 2010-12-28 | 2012-06-28 | Beda Oxygentechnik Armaturen Gmbh | Mehrfach gesicherte Koppelvorrichtung für Sauerstofflanzen |
| KR101059130B1 (ko) * | 2011-04-29 | 2011-08-25 | 신진욱 | 확관부를 갖는 연결관의 보강방법 및 상기 보강방법에 의해 보강된 확관부를 갖는 연결관 |
| KR101291777B1 (ko) * | 2011-06-27 | 2013-07-30 | 주식회사 한국피이엠 | 파이프 연결장치 |
| JP5899766B2 (ja) * | 2011-09-30 | 2016-04-06 | ダイキン工業株式会社 | 食い込み式管接続構造 |
| US20140041745A1 (en) * | 2012-08-10 | 2014-02-13 | Vinh T. Vu | Water Supply Fixture For Electronic Bidet Toilet Seat |
| DE102013105300A1 (de) * | 2013-05-23 | 2014-11-27 | Voss Fluid Gmbh | Rohrverbindung |
| GB201403280D0 (en) * | 2014-02-25 | 2014-04-09 | Brown & Miller Racing Solutions | Spigot couplings |
| WO2015179896A1 (en) * | 2014-05-29 | 2015-12-03 | Australasian Steel Products Pty Ltd | Anchoring arrangement for a protective sleeve |
| MY189839A (en) * | 2014-08-26 | 2022-03-11 | Entegris Inc | High torque polymer fittings |
| GB2539456A (en) * | 2015-06-16 | 2016-12-21 | Woodford Heating & Energy Ltd | A pipe for connection with a pipe fitting |
| CN105090586B (zh) * | 2015-08-11 | 2017-09-15 | 塔罗斯控股有限公司 | 一种龙头及其连接结构 |
| CN115264208B (zh) * | 2016-04-22 | 2026-02-03 | 卡明斯公司 | 流体输送连接接口设计 |
| CN105927804A (zh) * | 2016-06-03 | 2016-09-07 | 珠海格力电器股份有限公司 | 导流管组件及具有其的热水器 |
| US9671049B1 (en) * | 2016-07-27 | 2017-06-06 | Quick Fitting, Inc. | Hybrid push-to-connect fitting device and assembly |
| JP6099800B1 (ja) * | 2016-08-24 | 2017-03-22 | 井上スダレ株式会社 | 管継手構造 |
| KR102363378B1 (ko) * | 2017-06-12 | 2022-02-15 | 현대자동차주식회사 | 차량용 유압튜브커넥터 |
| US10400929B2 (en) | 2017-09-27 | 2019-09-03 | Quick Fitting, Inc. | Fitting device, arrangement and method |
| CN108000539B (zh) * | 2017-11-29 | 2024-06-18 | 宁波开浦智能科技有限公司 | 一种机械手气爪角度调节装置 |
| US20190360648A1 (en) * | 2018-05-22 | 2019-11-28 | Habitex Corporation | Lighting assembly |
| CN109084091B (zh) * | 2018-08-22 | 2022-03-04 | 珠海格力电器股份有限公司 | 导流管组件及热水器 |
| US10969047B1 (en) | 2020-01-29 | 2021-04-06 | Quick Fitting Holding Company, Llc | Electrical conduit fitting and assembly |
| US11035510B1 (en) | 2020-01-31 | 2021-06-15 | Quick Fitting Holding Company, Llc | Electrical conduit fitting and assembly |
| US20240117903A1 (en) * | 2022-09-23 | 2024-04-11 | Luohe Letone Hydraulics Technology Co., Ltd. | Hose, hose assembly, and manufacture method |
| CN220134916U (zh) * | 2023-03-14 | 2023-12-05 | 上海荣威塑胶工业有限公司 | 一种管道连接组件及充气产品 |
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- 2002-12-25 WO PCT/JP2002/013509 patent/WO2003056227A1/ja not_active Ceased
- 2002-12-25 KR KR10-2004-7010049A patent/KR20040071251A/ko not_active Ceased
- 2002-12-25 AU AU2002360021A patent/AU2002360021A1/en not_active Abandoned
- 2002-12-25 CN CN028260414A patent/CN100406797C/zh not_active Expired - Fee Related
- 2002-12-25 EP EP02793380A patent/EP1460324A4/en not_active Withdrawn
-
2004
- 2004-06-18 US US10/499,836 patent/US7350831B2/en not_active Expired - Fee Related
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| JPS6455393U (ja) * | 1987-10-02 | 1989-04-05 | ||
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| JPH0292189U (ja) * | 1989-01-10 | 1990-07-23 | ||
| JPH0742883A (ja) | 1993-08-04 | 1995-02-10 | Mirai Ind Co Ltd | 合成樹脂管の接続装置、その合成樹脂管の端部の加工方法及び加工用治具 |
| JPH07285078A (ja) * | 1994-04-15 | 1995-10-31 | Fujipura Seiko:Kk | カシメ冶具とこの冶具に適用される継手金具 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20050081935A1 (en) | 2005-04-21 |
| CN100406797C (zh) | 2008-07-30 |
| US7350831B2 (en) | 2008-04-01 |
| KR20040071251A (ko) | 2004-08-11 |
| EP1460324A4 (en) | 2005-05-18 |
| AU2002360021A1 (en) | 2003-07-15 |
| CN1610802A (zh) | 2005-04-27 |
| EP1460324A1 (en) | 2004-09-22 |
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