JPH11264176A - Pipe connection port structure - Google Patents

Abstract

(57) [Summary] [Problem] To provide a port connection structure of a pipe connection part which is excellent in workability and does not break out joints even if ground deformation occurs due to an earthquake or the like after construction, and sewage does not flow out. . SOLUTION: One end of a rubber joint 2 is fixedly fastened around an outer periphery of a receiving short pipe 122 into which an end of a drain pipe P2 is inserted by a band 3a, and protrudes from an end of the receiving short pipe 122. The other end of the rubber joint 2 thus formed is fixedly wound around the outer periphery of the drain pipe P2 inserted into the short mouth pipe 122 with the band 3b.
In addition, a positioning locking piece 120 is provided at the back of the receiving port short pipe 122 to allow the drainage pipe P2 to break when receiving a thrust load and to collide with the thrust load and to allow the leading end to enter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a port connecting portion of a pipe connecting portion capable of allowing the pipe to bend and expand and contract when a drain pipe is buried underground.

[0002]

2. Description of the Related Art When a cleaning pipe is set up above a sewage basin or a drain pipe is connected to a sewage basin, it is necessary to adjust a connection angle of the cleaning pipe and a drain pipe depending on a piping condition at a construction site. Sometimes. For this reason, a wastewater basin as shown in FIG. 5 has been proposed.

[0003] This conventional wastewater basin has a receiving port 61 into which a cleaning pipe P1 is inserted above the basin main body 6, and a rubber ring 611 is attached to an annular groove provided on the inner peripheral surface of the receiving port 61. The lower end of the cleaning pipe P1 inserted into the receptacle 61 is connected via a rubber ring 611. Further, below the basin body 6, a receiving port 62 to which an upstream drain pipe P2 is connected, and a spout 6 to which a downstream drain pipe P3 is connected.
3 is provided, the end of the drain pipe P2 is elastically connected via a rubber ring 621 mounted on the receptacle 62, and the outlet 63 is mounted on the receptacle of the drain pipe P3. It was connected to extend and contract via a rubber ring 631.

[0004]

However, since this sewage basin is buried underground, there are problems in workability and earthquake resistance. In other words, when installing a sewage basin in a buried hole formed by excavating the ground and connecting a cleaning pipe or a drain pipe, the connection angle of the drain pipe cannot be adjusted greatly, There was a problem that the joint portion was easily damaged in response to the above. In particular, when a thrust load acts on the drain pipe P2 due to ground deformation due to the earthquake, the tip of the drain pipe P2 is
2 and the receiving port 62 is damaged, and the drain pipe P2
Could be damaged.

The present invention has been made to solve the above-mentioned problem, and it is possible to adjust a connection angle of a drain pipe to a large value, and even if ground deformation occurs due to an earthquake or the like after construction, a joint portion is damaged and sewage or the like flows out. The object of the present invention is to provide a connection structure for a pipe connection part without a hole.

[0006]

According to a first aspect of the present invention, one end of a rubber joint is fastened with a band around an outer periphery of a receiving short tube into which an end of a drain pipe is inserted. The other end of the rubber joint protruding from the end of the pipe is fastened with a band around the outer periphery of the drain pipe inserted into the receiving short pipe, and a drain pipe is provided with a thrust load at the back of the receiving short pipe. A positioning locking piece is provided which is damaged when receiving and collides, thereby permitting entry of the tip.

The invention according to a second aspect is characterized in that the outer peripheral side of the short pipe and the rubber joint are covered with a protective cylinder.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view showing an embodiment in which a receiving structure of the present invention is applied to a sewage basin, FIG. 2 is an enlarged sectional view of a main part of the receiving structure shown in FIG. 1, and FIG. FIGS. 4A and 4B are cross-sectional views showing a main part of a socket structure according to another embodiment of the present invention. In the drawings, reference numeral 1 denotes a box body, and 2 denotes a rubber joint.

The box body 1 is formed by integrally molding a synthetic resin such as a vinyl chloride resin by injection molding. A cleaning port pipe P1 is provided on the top of the box body 1 having a bottomed cylindrical shape with an open top. A receiving port 11 to be inserted is provided. Outlet 11
An annular groove is provided on the inner peripheral surface of the distal end of the, and a rubber ring 111 is mounted in the annular groove. The inner peripheral surface of the receiving port on the back side of the rubber ring 111 is a stopper step portion 11.
It is formed in a conical shape whose inner diameter increases toward 0,
The cleaning port pipe P1 inserted into the receiving port 11 is
, And the connection angle of the cleaning port pipe P1 can be appropriately adjusted by the inner peripheral surface of the receiving port expanded in a conical shape.

On the other hand, a drainage groove 10 is provided at the bottom of the basin body 1, and a joint portion 12 which communicates with the drainage groove 10 and is connected to an upstream drainage pipe P 2 on the lower side wall of the basin body 1. ,
A port 13 to which the downstream drain pipe P3 is connected is provided. The joint portion 12 is provided with a short pipe 121 integrally projecting from a side wall of the box body 1.
A receiving short tube 122 whose diameter is increased with a step and a protective cylindrical body 123 that covers the outer peripheral side of the short receiving tube 122 are provided at the end of the tube. The inner diameter of the receiving short pipe 122 is slightly larger than the outer diameter of the drain pipe P2.
The end of the drain pipe P2 can be inserted into the drain pipe P2.

One end of a rubber joint 2 is fixed to the outer peripheral side of the receiving short tube 122. As shown in a half sectional view in FIG. 3, the rubber joint 2 is formed in a substantially cylindrical shape.
A large-diameter portion 21 into which the receiving short tube 122 is inserted is provided at one end thereof. A plurality of annular projections are provided on the inner peripheral surface of the large-diameter portion 21, and the band 3a wound around the outer peripheral surface thereof is provided.
The annular projection is inserted into the receiving short tube 1
22 is in elastic contact with the outer peripheral surface.

On the other hand, a plurality of flanges 22 are provided on the outer periphery of the other end of the rubber joint 2, and the opening ends of the protective cylinder 123 are closed by the flanges 22. A plurality of annular projections are provided on the inner peripheral surface of the other end of the rubber joint 2, and the annular projections are elastically attached to the outer peripheral surface of the drain pipe P2 by tightening the band 3b wound around the outer peripheral surface. It is in pressure contact. A bellows portion 23 is provided at the center of the rubber joint 2, that is, between the large-diameter portion 21 and the flange 22, and the bellows portion 23 allows the drain pipe P2 to move and bend in the axial direction. I can do it.

A thin cylindrical locking piece 12 protruding in the axial direction of the receiving short pipe 122 is provided at the back of the receiving short pipe 122.
0 is provided. The locking piece 120 is a receiving short pipe 122.
When the end of the drain pipe P2 is inserted and connected to the drain pipe P2, it is positioned, and when the tip of the drain pipe P2 collides with the locking piece 120 due to an earthquake or the like after the pipe is constructed, the drain pipe P2 is allowed to enter. Things.

Although FIG. 2 shows an example in which the locking piece 120 is integrally provided at the back of the receiving short tube 122, the present invention is not limited to this configuration. As shown in FIG.
A locking piece 120 a having a separate structure may be attached to the back of the base 22. At this time, if the groove X in the axial direction and the groove Y in the circumferential direction are provided on the outer peripheral surface of the locking piece 120a forming a cylindrical body, when the distal end portion of the drainage pipe P2 collides with the locking piece 120a, Since the locking piece 120a is broken by the grooves X and Y under the impact, there is an advantage that the intrusion of the drain pipe P2 can be surely permitted.

Further, the protection cylinder 123 is provided with the receiving short pipe 12.
2 and the rubber joint 2 fixed to the receiving short pipe 122. The protective cylinder 123 is provided with openings a and b, and the openings a and b are provided. The bands 3a, 3b can be wound and tightened by a driver or the like inserted from above.

Next, a procedure for constructing a sewage basin to which the receiving structure of the present invention is applied will be described. This sewage basin is buried in the ground, and a sewage basin is installed at the bottom of a buried hole formed by digging up the ground, and then a drainage pipe P3 on the downstream side is connected to the outlet 13 of the basin body 1. . At this time, the front end of the outlet 13 faces the receptacle provided at the end of the drain pipe P3, and the outlet 1
When a scoop, a lever, or the like is applied to the joint portion 12 located on the opposite side of 3 and squeezed, the sewage basin moves in the horizontal direction, and the spout 13 is inserted into the receptacle of the drain pipe P3.

Next, the drainage pipe P2 on the upstream side is
Connect the ends of At this time, one end of the rubber joint 2 is fixed to the outer periphery of the receiving short pipe 122 in advance, and the receiving short pipe 1
The drainage pipe P2 is inserted into the locking piece 120 provided at the back of the pipe 22 until it comes into contact with the tip. Then, the band 3b wound around the outer periphery of the other end of the receiving short tube 122 is tightened to fix the other end of the rubber joint 2 to the drain pipe P2. Thereafter, the lower end of the cleaning port pipe P1 is inserted and connected to the receiving port 11 of the basin body 1, and the lid holding cylinder is fixed to the upper end of the cleaning port pipe P1 as in the conventional example shown in FIG. Then, a lid is attached to the lid holding cylinder. Finally, the excavated earth and sand are backfilled, and the construction work on site is completed.

In the above-described embodiment, an example in which the port structure of the present invention is applied to the joint portion of the wastewater basin is illustrated, but the present invention is not limited to this. The drainage structure of the present invention can be provided at the end of one drainage pipe buried in the ground, and the other drainage pipe can be connected to it so that it can expand and contract and bend freely.

[0019]

As described above in detail, according to the present invention, one end of a rubber joint is fastened with a band around an outer periphery of a receiving short tube into which an end of a drain pipe is inserted, and the receiving short tube is fixed. The other end of the rubber joint protruding from the end of the receiving pipe is fastened with a band around the outer circumference of the drain pipe inserted into the receiving short pipe, and the drain pipe at the back of the receiving short pipe carries a thrust load. A positioning locking piece is provided to allow breakage when receiving and colliding and permit entry of the tip, so that the connection angle of the drainage pipe can be adjusted to a large extent, and even if ground deformation occurs due to an earthquake etc. after construction, the joint part There is no sewage or the like flowing out due to damage.

Further, since the short pipe at the receiving end and the rubber joint fixed to the short pipe at the receiving end are protected by the protective cylinder, external force such as earth pressure and wheel load is directly applied to the rubber joint. Water tightness is secured in a stable state for a long time without acting and deforming.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment in which a receiving port structure of the present invention is applied to a wastewater basin.

FIG. 2 is an enlarged sectional view of a main part of the socket structure shown in FIG.

FIG. 3 is a half sectional view of a rubber joint.

FIG. 4 is a sectional view showing a main part of a socket structure according to another embodiment of the present invention.

FIG. 5 is a sectional view showing a conventional wastewater basin.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Masu main body 11 Receiving port 12 Joint part 120, 120a Locking piece 122 Receiving short pipe 123 Protective cylinder 13 Spacing 2 Rubber joint 3a, 3b Band

Claims (2)

[Claims] An end of a rubber joint is fastened with a band around an outer periphery of a receiving short tube into which an end of a drain pipe is inserted, and a rubber joint protruding from an end of the receiving short tube is fixed. The other end is fastened with a band around the outer periphery of the drain pipe inserted into the receiving short pipe, and the drain pipe at the back of the receiving short pipe is damaged when it receives a thrust load and collides with it. A receiving structure for a pipe connecting portion, wherein a positioning locking piece is provided to allow entry of a distal end portion. 2. The port connection structure for a pipe connection according to claim 1, wherein the outer peripheral sides of the short port pipe and the rubber joint are covered with a protective cylinder.