JPH09280437A - Pipe fittings - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To easily and quickly perform piping work, and to confirm the insertion amount when the pipe is mounted on the pipe joint without causing deformation of the pipe during the fastening work of the pipe and the pipe joint. Thus, a relatively inexpensive pipe joint is provided. SOLUTION: A tubular portion 18 into which an inner circumference of a pipe 5 is inserted is fitted to a main body 10 formed at an end portion so as to be movable in an axial direction at an end portion of the main body, and is pressed by an end face of the pipe. The pressed member 30 which is fixed to the main body when it moves in the main body direction and moves to a predetermined position with respect to the main body, and the pipe 5 is inserted into the tubular portion 18 of the main body 10, The pipe joint 1 is provided with the pipe fixing means 60 that locks the pipe 5 relative to the main body 10 by locking it on the outer periphery.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a pipe joint.

[0002]

2. Description of the Related Art Resin pipes, cross-linked polyethylene pipes and the like are used for construction of buildings and the like, and metal joints are often used for these joints. As the pipe joint as described above, for example, a chuck ring for fastening the outer circumference of the end of the pipe joint body to the pipe is inserted into the end of the pipe joint body, and the outer circumference of the chuck ring is tapered to the inner circumference. A joint is known in which the diameter of the chuck ring is reduced by the taper surface formed on the inner periphery of the nut by tightening the nut formed with the above, and the pipe surface and the pipe joint body are pressure-connected.

[0003]

However, in the above-described pipe joint, it is troublesome to connect the pipes because the nuts need to be tightened, and when a plurality of pipes are arranged in parallel, Since adjacent pipes interfere with each other during piping work, there is a problem that workability of nut tightening is poor.

In addition, there is a problem that the chuck ring may rotate with the rotation of the nut when the nut is tightened, which may deform or damage the tube.

Further, there is a problem that it is difficult to confirm the insertion amount when the pipe is attached to the pipe joint, and it is difficult to confirm whether or not the pipe and the pipe joint are securely fastened.

Further, since metal is used as the material of the pipe joint, there is a problem that the cost of the pipe joint becomes relatively high.

The present invention has been made in view of the above-mentioned conventional problems, and the piping work can be performed easily and quickly, and the pipe is not deformed when the pipe and the pipe joint are fastened.
It is easy to check the insertion amount when the pipe is attached to the pipe joint,
An object is to provide a relatively inexpensive pipe joint.

[0008]

The pipe joint according to the present invention comprises:
Cylindrical inner core part (18) inserted in the pipe (5)
A main body (10) formed at an end thereof and an end portion of the main body movably fitted in the axial direction, pressed by an end surface of the pipe to move in the main body direction, and a predetermined position with respect to the main body. To be pressed against the main body when the pipe (5) is moved to the main body (1) of the pipe (5).
0) is inserted into the inner core portion (18), and is locked to the outer periphery of the pipe (5), and the main body (1) of the pipe (5) is
0) and a tube fixing means (60) for fixing the relative position with respect to 0).

Further, in the pipe joint according to the present invention, the pressed member (30) is provided with an indicating portion (134) indicating a relative position with respect to the main body (10).

In the pipe joint according to the present invention, when the pipe is inserted into the main body, the one end face of the pipe pushes the pressed member and moves it toward the main body. Along with the movement of the pressed tool, the tube fixing means is locked to the outer circumference of the tube. When the pressed member moves to a predetermined position, it is fixed to the main body, and at the same time, the tube is fixed to the main body.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a pipe joint according to the present invention will be described below in detail with reference to the drawings.

<Embodiment 1> FIG. 1 is a front view of a half section showing an embodiment of a pipe joint according to the present invention. The pipe joint 1 shown in FIG. 1 includes a main body 10, a pressed member 30, a fixing ring 50,
Lock ring 60, cover 70 and O-rings 80, 8
One. The structures of the main body 10, the pressed member 30, the fixing ring 50, the lock ring 60, the cover 70, and the O-rings 80 and 81 are shown in FIGS.

2A and 2B are a side view (FIG. 2A) and a half sectional front view (FIG. 2B) showing the structure of the main body 10.
As shown in FIG. 2, the main body 10 has a flange portion 1 on the outer periphery.
1, a male screw portion 20 and a hexagon nut portion 21 are formed,
It is a cylindrical member as a whole in which a through hole 19 is formed in the axial direction. The left side of the main body 10 in the figure (b) is an inner core portion 18 inserted into the end portion of the pipe to be mounted. On the left side surface of the flange portion 11 in the drawing, a cylindrical outer cylindrical portion 12 is formed concentrically with the inner core portion 18. A plurality of fixing pieces 15 are formed at the front end of the outer tubular portion 12 at equal intervals in the circumferential direction, and the front end surface is a contact surface 15a that contacts a fixing surface 55 of a fixing ring 50 described later. On the outer peripheral side of the outer cylinder portion 12, a male screw portion 13 for fastening with a cover 70 described later is formed. The inner circumference of the outer tubular portion 12 serves as a cylinder portion 14 that fits with a piston portion 31 of a pressed tool 30 described later. Flange 1
A fitting portion 17 that fits with an O-ring holding portion 40 of the pressed tool 30 described later is formed between the outer cylindrical portion 12 and the inner core portion 18.

FIG. 3 is a left side view (FIG. 3 (a)), a half sectional front view (FIG. 3 (b)) and a right side view (FIG. 3 (c)) showing the structure of the pressed tool 30. . As shown in FIG. 3, the pressed tool 30 is a member having a cylindrical shape with a bottom, and the bottom wall portion 44 forming the bottomed portion is fitted to the outer periphery of the inner core portion 18 of the main body 10. A joint hole 45 is formed. The inner side surface of the bottom wall portion 44 is a pressed portion 46 that is pressed by the end surface of the tube when the tube is inserted. The outer circumference of the tubular portion is a piston portion 31 that fits into the cylinder portion 14 of the main body 10. One end of the outer periphery of the tubular portion is
The O-ring holding portion 40, which is step-processed and holds the O-ring 80, is formed. The O-ring holding portion 40 fits with the fitting portion 17 of the main body 10. The piston part 31
The standing wall portion formed by the step between the O-ring holding portion 40 and the O-ring holding portion 40 is the O-ring seat surface 42. The inner periphery of the tubular portion is stepped to form a ring fitting portion 32 that fits with a fitting portion 51 of a fixed ring 50, which will be described later, and the ring fitting portion 32 has an O ring. 8
1 is held. The standing wall of the stepped portion is the O-ring seat surface 43 of the O-ring 81.

At the other end of the outer circumference of the tubular portion, a plurality of ring support pieces 33 are formed at equal intervals in the circumferential direction so as to project in the axial direction. A ring receiving portion 35 is formed at the tip of the ring support piece 33 so as to project toward the axial center. The inner circumference of the ring receiving portion 35 serves as an insertion opening 36 having an inner diameter corresponding to the outer diameter of the ring supporting portion 73 of the cover 70 to be inserted. An inner side surface of the ring receiving portion 35 is a ring receiving portion 37 having an inclined surface capable of receiving a lock ring 60 described later. The groove formed between the ring support pieces 33 is a guide groove 39 into which a guide rib 53 of a fixed ring 50 described later fits.

FIG. 4 is a left side view (FIG. 4 (a)), a half sectional front view (FIG. 4 (b)) and a right side view (FIG. 4 (c)) showing the structure of the fixing ring 50. As shown in FIG.
The fixed ring 50 is a ring-shaped member, and the inner circumference thereof corresponds to the outer diameter of the tube and serves as a tube insertion hole 52 into which the tube is inserted. The outer periphery is a fitting portion 51 that fits with the ring fitting portion 32 of the pressed tool 30. In addition, a plurality of guide ribs 53 are formed at one end of the outer circumference at equal intervals in the circumferential direction so as to project to the outer circumference. This guide rib 53
The guide grooves 39 of the pressed tool 30 are fitted into each other. Further, one side surface of the guide rib 53 serves as a fixed surface 55 that comes into contact with the contact surface 15a of the fixed piece 15 of the main body 10 and restricts the axial movement of the fixed ring 50. The other side surface of the guide rib 53 is inclined and serves as a guide surface 54 that guides a locking piece 61 of a lock ring 60 described later. The guide surface 54 is formed so as to be inclined (having a large angle with respect to the axial direction) from the locking piece 61 of the lock ring 60 in a standing state.

FIG. 5 is a front view (FIG. 5A) and a right side view (FIG. 5B) showing the structure of the lock ring 60. As shown in FIG. 5, the lock ring 60 is made of a thin metal plate and is a ring-shaped member having a cutout portion 64 in a part thereof. Locking pieces 61 that are inclined inward are formed at equal intervals in the circumferential direction via the connecting portions 63, and the tip ends of the locking pieces 61 are claws 62.

FIG. 6 is a half sectional front view (FIG. 6A) and a side view (FIG. 6B) showing the structure of the cover 70. As shown in FIG. 6, the cover 70 is a cylindrical member, and one end of the inner peripheral surface 71 has the main body 10 described above.
A female screw portion 72 that is fastened to the male screw portion 13 is formed. In addition, a ring-shaped ring support portion 73 is provided at an end portion of the inner circumference via connecting portions 76 formed at equal intervals in the circumferential direction.
Are formed. The space formed between the adjacent connecting portions 76 serves as a guide hole 77 into which the ring support piece 33 of the pressed tool 30 is fitted and inserted. The outer peripheral end surface of the ring support portion 73 is formed to be inclined and serves as a support surface 75 that supports the connecting portion 63 of the lock ring 60. The inner circumference of the ring support portion 73 serves as a tube insertion port 74 into which a tube is inserted.

As described above, the main body 10, the pressed member 30,
The pipe joint 1 including the fixed ring 50, the lock ring 60, the cover 70 and the O-rings 80 and 81 is assembled as follows.

First, the O-ring holding portion 40 of the pressed tool 30
And the O-rings 80 and 81 are fitted into the ring fitting portions 32, respectively. Next, the fitting portion 51 of the fixing ring 50 is fitted to the ring fitting portion 32 of the pressed tool 30. At this time, the guide rib 53 of the fixed ring 50 is fitted into the guide groove 39 of the pressed tool 30. Then, the pressed tool 3
The lock ring 60 is mounted between the ring receiver 37 of 0 and the guide surface 54 of the fixed ring 50.

The pressed tool 30 in the above state is replaced by the pressed tool 3
The zero piston portion 31 is inserted into the cylinder portion 14 of the main body 10 so as to be fitted therein. Then, the cover 70 is inserted so that the ring support piece 33 of the pressed tool 30 is fitted and inserted into the guide hole 77 of the cover 70, and the cover 70 is rotated, so that the female screw portion 72 of the cover 70 and the main body 10 are inserted. Is fastened to the male screw portion 13. As a result, the cover 70 is attached to the main body 10
The assembly is completed.

At this time, as shown in FIG. 7, the fixing surface 55 of the fixing ring 50 and the abutting surface 15 of the outer cylindrical portion 12 of the main body 10 are in contact with each other.
a is in contact with the fixing ring 50, and the fixing ring 50 is in the direction of the main body 10 (more specifically, the direction toward the male screw portion 20 of the main body 10).
Movement to is regulated. Also, the lock ring 60
The locking piece 61 is supported by the support surface 75 of the cover 70, and the claw portion 62 is in contact with the guide surface 54 of the fixed ring 50.

FIG. 1 shows the pipe joint 1 with no pipe attached, while FIG. 8 shows the pipe joint 1 with the pipe 5 attached.
The pipe 5 is attached to the pipe joint 1 by the pipe insertion port 74 of the cover 70.
When the pipe 5 is inserted from the inside, the inner core portion 18 of the main body 10 is inserted into the end portion of the pipe 5. Then, when the end surface of the tube 5 comes into contact with the pressed portion 46 of the pressed tool 30 and is further pushed by applying a force in the axial direction, the pressed tool 30 moves in the direction of the main body 10 together with the tube 5. Since the end of the lock ring 60 on the side of the connecting portion 63 is pushed by the ring receiver 37 of the pressed tool 30 as the pressed tool 30 moves, the lock ring 60
While the locking piece 61 of is supported by the support surface 75 of the cover 70, the claw portion 62 thereof is pushed down toward the pipe 5 along the guide surface 54 of the fixed ring 50, and the locking piece 61 is fixed to the pipe 5. Stand up against. As a result, the lock ring 60
The claw portion 62 is engaged with the outer periphery of the pipe 5 and locked, and the pipe 5 is fixed to the main body 10.

On the other hand, in addition to the fitting of the piston portion 31 of the pressed member 30 and the cylinder portion 14 of the main body 10, the pressed member 30 is moved by the pressing of the tube 5 and the pressed member 30.
The O-ring holding portion 40 and the fitting portion 17 of the main body 10 are also fitted together. As a result, the O-ring 80 seals between the cylinder portion 14 of the main body 10 and the piston portion 31 of the pressed tool 30. Similarly, since the pipe 5 is inserted into the O-ring 81 when the pipe 5 is inserted, the O-ring 81 allows the inner core portion 18 of the main body 10 and the pipe 5 to be inserted.
The sealing between the tool 30 and the pressed tool 30 is performed.

As a result, the pipe 5 and the pipe joint 1 are sealed by the sealing between the pipe 5 and the inner core portion 18 of the main body 10 and between the cylinder portion 14 of the main body 10 and the piston portion 31 of the pressed tool 30. The sealing between and is complete.

At this time, when the O-ring holding portion 40 of the pressed tool 30 and the fitting portion 17 of the main body 10 are fitted together, the ring support piece 33 of the pressed tool 30 enters the cover 70, Since it is hidden from the outside, it can be seen that the fitting of the pipe 5 to the pipe joint 1 is completed. In this sense,
The ring support piece 33 also functions as the indicator 134.

In the pipe joint 1 having the pipe 5 attached thereto as described above, the pipe 5 is detached from the pipe joint 1 by rotating the cover 70 and detaching it from the main body 10.

As described above, according to this embodiment, the pipe 5
When the attachment of the pipe 5 to the pipe joint 1 is completed, the ring support piece 33 of the pressed tool 30 enters the cover 70 and is hidden from the outside, so that the attachment of the pipe 5 to the pipe joint 1 is completed. In addition to the confirmation, the insertion amount of the pipe 5 can be confirmed.

If the pipe 5 is inserted into the pipe joint 1 without being rotated, the pipe 5 is completely attached to the pipe joint 1, so that the conventional co-rotation of the chuck ring can be prevented.

The pipe joint 1 according to the present invention can be manufactured from a resin material, a metal material or the like, and when manufactured from a resin material, the product cost can be reduced.

<Embodiment 2> FIG. 9 is a half sectional front view showing another embodiment of the pipe joint according to the present invention. The pipe joint 2 shown in FIG. 9 includes a main body 110, a pressed tool 130, a fixing ring 150, a lock ring 160, a cover 170, and O-rings 180 and 181. Hereinafter, the main body 110, the pressed member 130, the fixing ring 150, the lock ring 160,
The structure of the cover 170 is shown in FIGS. 10 to 14, respectively.

FIG. 10 is a side view (FIG. 10A) showing the structure of the main body 110 and a front view of a half section (FIG. 10B).
It is. As shown in FIG. 10, the main body 110 has a flange portion 111, a male screw portion 120, and a hexagon nut portion 1 on the outer circumference.
21 is formed, and a through hole 119 is formed in the axial direction, which is a cylindrical member as a whole. The left side of the main body 110 in the figure (b) is an inner core portion 118 that is inserted into the end portion of the pipe to be mounted. Figure of flange 111 (b)
A cylindrical outer cylinder portion 112 is formed concentrically with the inner core portion 118 on the middle left side surface. A flange 122 is formed on the outer periphery of the outer tubular portion 112, and
A male screw portion 113 to be fastened to a female screw portion 176 of the cover 170 described later is formed at the tip portion. Further, a single slit portion 116 is formed from the tip of the outer tubular portion 112. The tip end surface of the outer tubular portion 112 is in contact with a fixed surface 155 of a fixed ring 150, which will be described later, and a contact surface 115.
It has become. The inner circumference of the outer cylinder portion 112 has a cylinder portion 11 that fits with a piston portion 131 of a pressed tool 130 described later.
It is 4. Further, the outer cylinder portion 11 of the flange portion 111
2 and the inner core portion 118, the fitting portion 11 that fits with the O-ring holding portion 140 of the pressed tool 130 described later.
7 are formed.

FIG. 11 is a left side view (FIG. 11 (a)) showing a structure of the pressed tool 130, and a front view of a half section (FIG. 11).
FIG. 11B is a right side view (FIG. 11C). FIG.
As shown in FIG. 1, the pressed tool 130 is a member having a bottomed cylindrical shape, and the bottom wall portion 144 forming the bottomed portion is fitted to the outer periphery of the inner core portion 118 of the main body 110. The hole 145 is formed. The inner surface of the bottom wall portion 144 is a pressed portion 146 that is pressed by the end surface of the tube when the tube is inserted. The outer circumference of the tubular portion is the main body 110.
It is a piston portion 131 that fits with the cylinder portion 114 of the. Further, on the outer periphery, a projection-shaped indicator portion 1
34 is formed. One end of the outer circumference of the tubular portion is stepped to form an O-ring holding portion 140 that holds the O-ring 180. O-ring holder 140
Fits with the fitting portion 117 of the main body 110. The standing wall portion formed by the step between the piston portion 131 and the O-ring holding portion 140 is an O-ring seat surface 142. The inner circumference of the tubular portion is stepped to form a ring fitting portion 132 that fits with a fitting portion 151 of the fixed ring 150, which will be described later, and the ring fitting portion 132 has an O ring. 181 is held. The standing wall of the stepped portion is the O-ring seat surface 143 of the O-ring 181. The inner circumference on the side of the bottom wall 144 is an insertion portion 136 into which the pipe is inserted.

FIG. 12 is a left side view (FIG. 12A) showing the structure of the fixing ring 150, and a front view of a half section (FIG. 12).
(B)) It is a right view (FIG.12 (c)). FIG.
As shown in FIG. 2, the fixing ring 150 is a ring-shaped member, and the inner circumference corresponds to the outer diameter of the tube and serves as a tube insertion hole 152 into which the tube is inserted. The outer periphery is stepped in two stages, the minimum diameter part thereof is a fitting part 151 that fits with the ring fitting part 132 of the pressed tool 130, and the maximum diameter part is a cover 170 described later. The diameter corresponds to the inner diameter of the. The standing wall of the medium diameter portion is the end surface 1 of the pressed tool 130.
The contact surface 156 is in contact with 33. The standing wall of the maximum diameter portion is a fixed surface 155 corresponding to the fixed surface 115 of the main body 110. Further, the end surface on the maximum diameter portion side has a fixed surface 15 that abuts on an abutting surface 173 of the cover 170 described later.
3, the inner peripheral edge portion is an inclined surface, and is a restriction surface 154 that restricts deformation of a locking piece 161 of the lock ring, which will be described later.

FIG. 13 is a front view (FIG. 13A) and a right side view (FIG. 13) showing the structure of the lock ring 160.
(B)). As shown in FIG. 13, the lock ring 1
Reference numeral 60 is a ring-shaped member made of a thin metal plate. Locking pieces 161 inclined toward the inside are formed at equal intervals in the circumferential direction via the connecting portion 164.
The tip portion of is a claw portion 162. The claw portion 162
The inner diameter of the tube is slightly smaller than the outer diameter of the tube to be inserted.

FIG. 14 is a half sectional front view (FIG. 14A) and a side view (FIG. 14) showing the structure of the cover 170.
(B)). As shown in FIG. 14, the cover 170
Is a cylindrical member, and one end portion of the inner peripheral surface 171 is formed with a female screw portion 172 that is fastened to the male screw portion 113 of the main body 110 described above. Also, the inner peripheral surface 171
A ring-shaped ring receiving portion 176 is formed at the other end of the. The inner side surface of the ring receiving portion 176 is a contact surface 173 that contacts the fixed surface 153 of the fixed ring 150 described above. The inner peripheral surface of the contact surface 173 is formed to be inclined, and the locking piece 1 of the lock ring 160 is formed.
It is a ring bridge 175 that receives 61. The inner circumference of the ring receiving portion 176 corresponds to the pipe diameter and serves as a pipe insertion port 174 into which the pipe is inserted.

A pipe joint 2 composed of the main body 110, the pressed member 130, the fixing ring 150, the lock ring 160, the cover 170 and the O-rings 180 and 181.
Is assembled as follows.

First, the O-ring holding portion 1 of the pressed tool 130
40 and ring fitting portion 132 with O-rings 180, 18
Insert 1 respectively. Next, the fitting portion 51 of the fixing ring 150 is fitted to the ring fitting portion 132 of the pressed tool 130. At this time, the contact surface 156 of the fixing ring 150
And the end surface 133 of the pressed tool 130 are in contact with each other.

In the pressed tool 130 in the above state, the fitting hole 145 of the pressed tool 130 has the inner core portion 1 of the main body 110.
18 and the indicator part 134 of the pressed tool 130 is inserted so as to fit into the slit part 116. Then, with the lock ring 160 mounted on the ring receiver 175 of the cover 170, the cover 170 is inserted into the main body 110, and the cover 170 is rotated to rotate the cover 1
The female screw portion 172 of 70 and the male screw portion 113 of the main body 110 are fastened. As a result, the cover 170 is fixed to the main body 110, and the assembly is completed.

As shown in FIG. 15, the fixing surface 155 of the fixing ring 150 and the contact surface 11 of the outer cylindrical portion 112 of the main body 110.
The fixed ring 150 is restricted from moving toward the main body 110. Further, the fixing surface 153 of the fixing ring 150 is in contact with the contact surface 173 of the cover 170, and the movement in the direction away from the main body 110 is restricted, and the fixing surface 153 is fixed to the main body 110. Has become.

The lock ring 160 has a locking piece 161.
Is supported by the ring receiver 175 of the cover 170 (the outer edge of the lock ring 160 is stopped between the restricting surface 154 of the fixed ring 150 and the ring receiver 175 of the cover 170).

FIG. 9 shows the pipe joint 1 with no pipe attached, while FIG. 16 shows the pipe joint 2 with the pipe 5 attached. The pipe 5 is attached to the pipe joint 2 by inserting the pipe 5 from the pipe insertion port 174 of the cover 170 into the end portion of the pipe 1 by the main body 1.
The ten inner core portions 118 are inserted. And
When the end surface of the tube 5 comes into contact with the pressed portion 146 of the pressed tool 130 and is further pushed by applying a force in the axial direction, the pressed tool 130 moves in the direction of the main body 110 together with the tube 5. As described above, since the inner diameter of the claw portion 162 of the lock ring 160 is slightly smaller than the outer diameter of the tube 5, the tube 5 is inserted while the claw portion 62 contacts the outer circumference of the tube 5. Claw 62
Since the pipe is inclined, even if the pipe 5 is pulled out in the direction away from the main body 110, the claw portion 62 bites into the pipe 5 and
Can not be pulled out. Thus, when the tube 5 is inserted to the predetermined position, the fixing of the tube 5 to the main body 110 is completed.

As the tube 5 is inserted, the pressed tool 1
30 piston portion 131 and body 110 cylinder portion 11
4 and the O-ring holding portion 140 of the pressed tool 130.
And the fitting portion 117 of the main body 110 are fitted together. Thereby, the cylinder portion 1 of the main body 110 is
14 and the piston part 131 of the pressed tool 130 are sealed. Similarly, since the pipe 5 is inserted into the O-ring 181 when the pipe 5 is inserted, the O-ring 181 allows the inner core portion 118 of the main body 110 to be inserted.
The sealing between the tube 5 and the pressed tool 130 is performed.

As a result, the pipe 5 and the pipe joint 1 are sealed by the sealing between the pipe 5 and the inner core portion 18 of the main body 110 and between the cylinder portion 14 of the main body 110 and the piston portion 31 of the pressed tool 130. The sealing between and is complete.

When the insertion of the tube 5 is completed, the pressed tool 13
The indicator part 134 of 0 comes to the position of the end part 116a of the slit part 116 of the main body 110,
This completes the mounting of the pipe 5 on the pipe joint 2.

In the pipe joint 2 having the pipe 5 attached thereto as described above, the pipe 5 is removed from the pipe joint 2 by rotating the cover 170 and separating it from the main body 110.

As described above, according to this embodiment, as shown in FIG.
In addition to the effect similar to that of the pipe joint 1 shown in 1 above, when the attachment of the pipe 5 to the pipe joint 2 is completed, the indicator portion 134 provided on the pressed tool 130 is connected to the end of the slit portion 116 formed on the main body 110. Since it comes to the position of the portion 116a, the completion of mounting the pipe 5 on the pipe joint 2 can be easily confirmed, and the insertion amount of the pipe 5 can be easily confirmed. In the above embodiment, the outer edge of the lock ring 160 is stopped between the restricting surface 154 of the fixed ring 150 and the ring receiver 175 of the cover 170.
The outer edge portion of 60 may be sandwiched between the contact surface 173 of the cover 170 and the fixing surface 153 of the fixing ring 150.

[0048]

As described above, according to the pipe joint of the present invention, when the pressed tool moves to a predetermined position with respect to the main body when the pipe is inserted into the pipe joint, the pressed tool and the main body. Since the fitting of the pipe to the pipe joint is completed in a state where the positional relationship between and is fixed, it is easy to confirm the completion of the fitting and also the insertion amount.

Further, since the pipe can be attached to the pipe joint by inserting it in the axial direction of the pipe joint and pressing it, it is possible to prevent the outer periphery of the pipe from being damaged or deformed.

Furthermore, since there is no need to rotate the pipe when mounting the pipe on the pipe joint, the work when the plural pipes are arranged in parallel is easy and the workability is improved.

[Brief description of drawings]

FIG. 1 is a front view in half section showing an embodiment of a pipe joint according to the present invention.

2 is a side view (FIG. 2 (a)) and a half-section front view (FIG. 2 (b)) showing the structure of the main body of the pipe joint shown in FIG.
It is.

FIG. 3 is a left side view (FIG. 3 (a)) showing a structure of a pressed tool in the pipe joint shown in FIG.
(B)) It is a right view (FIG.3 (c)).

4 is a left side view (FIG. 4 (a)) showing a structure of a fixing ring in the pipe joint shown in FIG. 1, a front view of a half section (FIG. 4).
(B)) and a right side view (Fig. 4 (c)).

5 is a side view (FIG. 5 (a)) and a front view (FIG. 5) showing a structure of a lock ring in the pipe joint shown in FIG.
(B)).

6 is a front view (FIG. 6 (a)) and a right side view (FIG. 6 (b)) of the cover in the pipe joint shown in FIG.

7 is a main body, a fixing ring, and the like in the pipe joint shown in FIG.
It is a half cross-sectional front view which shows the positional relationship of a lock ring and a cover.

FIG. 8 is a front view in half section showing a state in which a pipe is attached to the pipe joint shown in FIG.

FIG. 9 is a front view in half section showing another embodiment of the pipe joint according to the present invention.

10 is a side view (FIG. 10 (a)) showing a structure of a main body of the pipe joint shown in FIG. 9 and a front view of a half section (FIG. 10).
(B)).

11 is a left side view (FIG. 11 (a)) showing a structure of a pressed tool in the pipe joint shown in FIG. 9 and a half sectional front view (FIG. 11).
(B)) It is a right view (FIG.3 (c)).

12 is a left side view (FIG. 12 (a)) showing a structure of a fixing ring in the pipe joint shown in FIG. 9, a front view of a half section (FIG. 1).
2 (b)) and a right side view (FIG. 4 (c)).

13 is a side view (FIG. 13A) and a front view (FIG. 13) showing a structure of a lock ring in the pipe joint shown in FIG. 9.
(B)).

14 is a front view (FIG. 14A) and a right side view (FIG. 14B) of the cover in the pipe joint shown in FIG.
It is.

15 is a front view of a half section showing the positional relationship between the main body, the fixing ring, the lock ring and the cover in the pipe joint shown in FIG.

16 is a front view in half section showing a state in which a pipe is attached to the pipe joint shown in FIG.

[Explanation of symbols]

 1, 2 Pipe joint 5 Pipe 10 Main body 11 Flange portion 12 Outer cylinder portion 13 Male screw portion 14 Cylinder portion 15 Fixing piece 15a Abutment surface 17 Fitting portion 18 Inner core portion 19 Conducting hole 20 Male screw portion 21 Hexagon nut portion 30 Pressed tool 31 Piston part 32 Ring fitting part 33 Ring support piece 35 Ring receiving part 36 Insertion port 37 Ring receiving 39 Guide groove 40 O ring holding part 42, 43 O ring seating surface 44 Bottom wall part 45 Fitting hole 46 Covered Pressing portion 50 Fixing ring 51 Fitting portion 52 Tube insertion hole 53 Guide rib 54 Guide surface 55 Fixing surface 60 Lock ring 61 Locking piece 62 Claw portion 63 Connecting portion 64 Notch portion 70 Cover 71 Inner peripheral surface 72 Female screw portion 73 Ring support Part 74 Pipe insertion port 75 Guide hole support surface 76 Connection part 80, 81 O-ring 110 Main body 111 Flange part 11 Outer tube part 113 Male screw part 114 Cylinder part 115 Abutment surface 116 Slit part 116a End part 117 Fitting part 118 Inner core part 119 Conducting hole 120 Male screw part 121 Hexagon nut part 122 Flange 130 Pressed tool 131 Piston part 132 Ring Fitting part 134 Indicator part 136 Insertion part 140 O-ring holding part 142 O-ring seating surface 143 O-ring seating surface 144 Bottom wall part 145 Fitting hole 146 Pressed part 150 Fixing ring 151 Fitting part 152 Pipe insertion hole 153 Fixing surface 154 Holding surface 155 Fixed surface 156 Abutment surface 160 Lock ring 161 Locking piece 162 Claw part 164 Connecting part 170 Cover 171 Inner peripheral surface 172 Female screw part 173 Abutment surface 174 Pipe insertion port 175 Ring receiving part 176 Ring receiving part 180, 181 O-ring

Claims (2)

[Claims] 1. A main body (10) having a tubular inner core portion (18) inserted into a pipe (5) at an end thereof, and an axially movable fit at the end portion of the main body (10). Is
A pressed member (30) that is pressed by the end surface of the pipe and moves toward the main body, and is fixed to the main body when the pipe (5) is moved to a predetermined position with respect to the main body; Inner core part (1) of body (10)
8) A pipe joint having pipe fixing means (60) for locking the relative position of the pipe (5) with respect to the main body (10) by being locked to the outer periphery of the pipe (5) upon insertion into the pipe (5). 2. The body (1) is attached to the pressed member (30).
The pipe joint according to claim 1, further comprising an indicating portion (134) that indicates a relative position with respect to 0).