JP2003106487A - Expansion joint and pipe connecting device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an expansion joint and a pipe connecting device capable of simply connecting to another pipe member. SOLUTION: This expansion joint connecting a pair of pipe members is provided with a joint body to be connected to one pipe member and a slide pipe to be connected to the other pipe member. A sealing material is interposed between the internal circumferential surface of the joint member body and the outer circumferential surface of the slide pipe, and the slide pipe is slidably inserted along the axial direction to the joint body. This pipe connecting device connects a flexible pipe in the axial direction of the expansion joint or, at least, a pair of expansion joints are provided, and the axial directions of the respective expansion joints are differed at a prescribed angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion joint and a pipe connecting device using the same.

[0002]

2. Description of the Related Art Conventionally, when connecting pipes of a building, for example, when connecting a drainage pipe connected to a main drainage pipe and a branch drainage pipe, if the drainage pipes are misaligned with each other, the connection pipes connecting these drainage pipes will be used. Correction is performed by inserting a flexible tube.

[0003]

However, with such a correcting means, even if the displacement of the two drain pipes can be easily corrected, the pipe length cannot be adjusted. For this reason, it is necessary to accurately cut the length of the pipes forming the connection pipes and connect the pipes to the pipe joint, which requires a considerable amount of labor.

An object of the present invention is to provide an expansion joint and a pipe connecting device which can be easily connected to other piping members.

[0005]

In order to achieve the above object, the expansion joint of the present invention according to claim 1 is an expansion joint for connecting a pair of pipe members, which is connected to one of the pipe members. And a slide pipe connected to the other of the piping members, wherein a sealing material is interposed between the inner peripheral surface of the joint main body and the outer peripheral surface of the slide pipe, and The slide tube is slidably inserted into the joint body along the axial direction.

In order to achieve the above object, in the pipe connecting device of the second aspect, a flexible tube is connected in the axial direction of the expansion joint of the first aspect.

In order to achieve the above object, the pipe connecting device according to a third aspect of the present invention is the pipe connecting device according to the first or second aspect, in which at least one expansion joint is provided and the axial direction of each expansion joint is predetermined. The angle is different.

In order to achieve the above object, a pipe connecting device according to a fourth aspect of the present invention is a rotary device that allows the slide pipe of the expansion joint according to any one of the first to third aspects to make a sliding contact with the slide pipe. The body is provided with a guide for supporting the slide tube.

[0009]

According to the expansion joint of the present invention as set forth in claim 1, the length of the expansion joint is changed by sliding the slide pipe when a part of the piping equipment such as drainage piping is constituted, and the piping equipment is changed. The pipe length between the pair of pipe members that configure the above is adjusted.

The pipe connecting device of the present invention according to claim 2 is
When a part of piping equipment such as drainage piping is configured, sliding the slide pipe changes the axial length of the pipe connecting device.Therefore, the pipe length between a pair of piping members that constitutes the piping equipment Can be adjusted, and even if the positions of the pair of piping members forming the piping equipment are displaced, the flexible tube bends, and this is absorbed.

The pipe connecting device of the present invention according to claim 3 is
When a part of piping equipment such as drainage piping is configured, slide the slide pipe of each expansion joint to adjust the pipe length between a pair of piping members that make up the piping equipment in two different directions. can do.

The pipe connecting device of the present invention according to claim 4 is
When the slide tube slides, the rotating body supports the slide tube and is rotated by the slide tube, so that the slide tube slides more smoothly.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an expansion joint and a pipe connecting device of the present invention will be described below with reference to the drawings.

FIG. 1 shows an expansion joint according to the present invention. The expansion joint 10 includes a joint body 11 and a slide tube 12.
It consists of

The joint body 11 is formed of a molded product such as a synthetic resin, which has a hollow cylindrical shape with both ends open. The joint body 11 is provided with a communication hole 14 connected to another piping member. The diameter of one end of the communication hole 14, that is, the diameter on the upper side in FIG. 1 is larger than the diameter on the opposite side. The lower peripheral surface of the joint body 11 is a connecting portion 13. The connecting portion 13 is configured to serve as a spigot for the piping member 61 connected thereto.

The slide tube 12 is made of a synthetic resin molding having a hollow cylindrical shape with both ends open. The slide tube 12 is fitted on the upper side of the communication hole 14.
A sealing 15 is arranged between the slide tube 12 and the communication hole 14. The sealing 15 is made of a rubber packing in the form of a ring, and is fitted into a sealing material groove 16 provided in the communication hole 14. Among the protrusions located in the axial direction that form the sealing material groove 16, the protrusion located on the outer side has a lower height than the protruding portion on the opposite side, which simplifies the insertion of the sealing material 15 into the sealing material groove 16. There is. The slide tube 12 is sealed from the joint body 11 by a sealing material 15, and can slide from a position above the position shown by the solid line to a position shown by the chain line.

The protective ring 17 is made of a synthetic resin molded product having an L-shaped cross section, and is fitted into the joint body 14 by penetrating the hole in the end wall through the slide tube 12. This allows
The protective ring 17 covers the upper end of the communication hole 14 to prevent water and dust from entering the sealing portion, and also prevents the sealing material 15 from coming out together with the protrusion located on the outside forming the sealing material groove 16. It is blocking.

The expansion joint can be a part of, for example, drainage piping equipment. The connection is, for example, the slide tube 1
This is done by connecting the end portion (not shown) of 2 to the upstream piping member of the drainage pipe and fitting the connecting portion 13 to the downstream piping member, for example, the pipe joint 61. At this time, since the length of the expansion joint 10 is changed by sliding the slide pipe 12, the upstream pipe and the downstream pipe 61 can be easily connected even if they are fixed to a house or the like. Therefore, the connection work can be performed in a short time and with a small labor.

2 to 5 show a pipe connecting device using an expansion joint according to the present invention.

This pipe connecting device is for connecting the drain pipe of the sanitary container and the drain pipe connected to the main drain pipe.

As shown in FIGS. 2 and 3, the pipe connecting device itself comprises an expansion joint 10 and a flexible pipe 31 connected in the axial direction of the expansion joint 10.

The expansion joint 10 is constructed in the same manner as the expansion joint described with reference to FIG. That is, the joint body 1
1 and a slide tube 12 connected to the joint body 11, the slide tube 12 is slidably fitted in the joint body 11, and by a sealing material arranged between the slide tube 12 and the joint body 11. It is sealed.

The flexible tube 31 is also made of a synthetic resin molding. The flexible tube portion 32 has a large number of concavities and convexities on the tube wall so that it can be flexed, and the connecting portions 33 and 34 are integrally formed at both ends. Receptacles are provided in the connecting portions 33 and 34. Both ends of the communication hole penetrating the flexible portion 32 are connected to these receiving ports. The expansion joint 10 is connected to the flexible tube 31 by fitting the receiving opening of the connecting section 34 of the flexible tube 31 into the slide tube 12.

This pipe connecting device is connected via a pipe joint 21 and a pipe 41 to a drain pipe piping facility having drain pipes 61D and 61E.

The pipe joint 21 comprises a 45 ° elbow. The elbow body 22 is bent at an angle of 45 °. The connecting portions 23 and 24 are integrally provided at both ends of the elbow body 22. The connecting portion 24 has a socket 26, and the connecting portion 23
There is also a mouth. One end of the communication hole 25 is connected to the receiving port 26, and the other end is connected to the receiving port in the connecting portion 23. The elbow 21 and the drain pipe 61D are connected to each other by fitting the receiving port in the connecting portion 23 of the elbow 21 into the drain pipe 61D.
The pipe 41 is hollow, and the upper end thereof is connected to the connecting portion 2 of the elbow 21.
It is fitted in the socket at 4.

For connection to the drainage pipe facility, for example, this pipe connecting device is used for the drainage pipe 61D of the sanitary container and the main drainage pipe 61.
It is disposed between the flexible tube 31 and the connector E, the lower end of the pipe 41 is fitted to the receiving port at the connecting portion 33 of the flexible tube 31, and the receiving port at the connecting portion 33 of the flexible tube 31 is provided via the pipe 41 and the elbow 21. Is connected to the drain pipe 61D, and the outlet 13 of the expansion joint 10 is connected to the main drain pipe 6
This is done by fitting it into the socket of 1E. At this time, even if there is a displacement between the drainage pipe 61D of the sanitary container and the main drainage pipe 61E, for example, in FIG. 2, the drainage pipe 61D and the pipe joint 61E are not on the same straight line, and the horizontal direction or Even if it is offset in the front-back direction or in both directions,
The bending portion 31 of the flexible tube 31 bends and absorbs the bending portion 31 to correct the positional deviation. At the same time, slide tube 1 of expansion joint 10
2 slides with respect to the joint body 11, the axial length of this pipe connecting device changes, and the length between the drainage pipe 61D and the main drainage pipe 61E is adjusted. Therefore, the connection work between the drainage pipe 61E of the sanitary container and the main drainage pipe 61E can be completed simply by connecting with the pipe connecting device according to the present invention, and no special work for correcting the positional deviation and adjusting the pipe length is required. .

The pipe connecting device further includes a guide 51. The guide base 51 includes a joint main body 52 and a roll 53 as well shown in FIGS. 4 and 5. The base body 52 has a substantially U-shape. A fixing piece 55 extends at a right angle from the parallel piece 54 of the base body 52. The roll 53 has a drum shape and is arranged between the parallel pieces 54, and the shaft extending from both ends is held by the parallel pieces 54 and can rotate on the joint body.

The guide board 61 connects the pipe joint 21 to the drain pipe 61D.
Or before connecting the expansion joint 10 to the main drain pipe 61E, or before connecting both the pipe joint 21 and the expansion joint 10 to the drain pipes 61D, 61E, the peripheral surface of the roll 63 is The slide tube 12 is fitted into the space between the roll 63 and the curved piece of the base body 62 by being brought into contact with the peripheral surface, and the fixed piece 65 is screwed to the building wall surface 71 or the like.

When the slide tube 12 of the expansion joint 10 slides during the plumbing work, the roll guide 63 is rotated by frictional contact with the slide tube 12 so that the slide tube 12 slides smoothly. , Furthermore, not only to support this pipe connection device after the work is finished,
Even if the pipe connecting device vibrates, the rotation of the roll 63 absorbs the vibration energy.

FIG. 6 shows another embodiment of the pipe connecting device of the present invention. This pipe connecting device is expansion joint 10A, 10B
And an elbow 61A.

The expansion joints 10A and 10B are constructed in the same manner as the expansion joint 10 shown in FIG.

The elbow 61A is a 90 ° elbow. This elbow has connection parts 161A and 161A 'at both ends, and each connection part 161A, 161A' is provided with a receptacle. Communication holes on the elbow connect to these receptacles. The expansion joint 10A has the outlet 13A fitted and joined to the receiving opening at the connecting portion 161A of the 90 ° elbow 61A. Expansion joint 10B is slide tube 12B
Is fitted and coupled to the receptacle at the remaining connecting portion 161A 'of the elbow 61A.

The pipe connecting device is connected to, for example, drainage piping equipment. The elbow 61C constitutes the upstream piping member of this drainage piping facility, and the pipe joint 61B constitutes the downstream piping member. The elbow 61C is also formed of a 90 ° elbow, and the connection portions 161C and 161C ′ at both ends of the elbow body are provided with receiving ports connected to communication holes penetrating therethrough. A drainage pipe such as a sanitary container is fitted into the receiving port of the connecting portion 161C at the upper portion of the elbow 61C. In addition, the pipe fitting 61
B is a connecting portion 161B at the end shown in the joint body.
The end portion, not shown, is also provided with a connecting portion. Receptacles that connect to the communication holes penetrating the pipe joint 61B are provided at these connecting portions. The drainage pipe connected to the main drainage pipe is fitted into a receiving port at a connection portion (not shown) of the pipe joint 61B.

The connection of the pipe connecting device of the present invention to this drainage piping facility is performed by fitting the slide pipe 12A of the expansion joint 10A into the receiving port at the connecting portion 161C 'of the elbow 61C and connecting the outlet of the expansion joint 10B to the pipe. This is done by fitting the socket in the connecting portion 161B of the joint 61B. The expansion joints 10A and 10B are different in the axial direction by an angle of 90 ° by an elbow 61A.

The elbow 61C is used for connection work.
Even if the positions of the pipe joint 61B and the pipe joint 61B are fixed, for example, already fixed to the building, the slide pipe 12A of the expansion joint 10A slides in the vertical direction, and the expansion joint 10B
Since the slide tube 12B of (1) slides in the horizontal direction and the lengths in the two directions change, the work of adjusting the tube lengths is not required at all. Therefore, the connection work can be performed in a short time and with a small labor.

With this pipe connecting device, the elbow 61C has 45
° It may consist of an elbow, and additionally FIGS.
A part of the pipe connecting device described in connection with may be configured.

If necessary, the guide base 51 in the pipe connecting device described with reference to FIGS. 2 to 5 may be replaced with the slide pipes 12A, 10B of the expansion joints 10A, 10B of the pipe connecting device.
12B, and these slide tubes 12A,
12B is supported and the slide tubes 12A and 12B slide smoothly, or the slide tube 1
2A, 12B, one of the slide tubes 12A, 1
2B while supporting one of the slide tubes 12A, 12
One slide of B may be made smooth.

The pipe connecting device described above is for connecting the drain pipe of the sanitary container and the main drain pipe, but may be configured as a device for connecting to the pipe or pipe joint of other piping equipment. Alternatively, it may be composed of more pipe joints or pipes.

Also, in the expansion joint, the connecting portion may be configured as a receiving port according to the pipe or pipe joint to be connected, and the joint body may be in the form of another pipe joint such as an elbow or pipe. Good.

FIG. 7 shows such an expansion joint 1 according to the present invention.
10 is shown.

This expansion joint 110 is the same as the expansion joint 10 described with reference to FIG.
The fitting body 111 is connected to one of the first and the slide pipe 112, one end of which is connected to the other of the piping member 161. The slide tube 112 has the other end slidably inserted into the other end of the joint body 111 and is sealed by a sealing material 115 made of rubber packing arranged between the slide tube 112 and the joint body 111. It is possible to slide from the upper position to the position indicated by the chain line. The sealing material 115 is inserted into the sealing material groove 116 in the joint body 111.

However, with this expansion joint, the joint body 11
The sealing material groove 116 in FIG. 1 has an open end and is prevented from coming out by the protective ring 117.
The insertion of the sealing material 115 into the No. 1 is made easy. The connecting portion 113 connected to another pipe member such as the pipe 161 in the joint body 111 is configured as a spigot.

Further, the expansion joint 2 according to the present invention shown in FIG.
10 is in the form of a reducing pipe joint. Slide tube 2
12 is slidably fitted to one end of the joint body 211 and is sealed by a sealing material such as rubber packing. A connection portion 213 is provided at the opposite end of the joint body 211, and a receiving port for a small diameter pipe or the like is provided here. In this expansion joint, the connecting portion may be configured as a spigot for a small diameter pipe or the like.

Further, the expansion joint 310 according to the present invention shown in FIG. 9 is in the form of a 90 ° elbow. A slide tube 312 is slidably fitted to one end of the joint body 311, and is sealed by a sealing material such as rubber packing. The connecting portion 313 at the opposite end of the joint body 311 is configured as a spigot. Also,
In FIG. 10, the expansion joint 410 of the present invention is also in the form of a 90 ° elbow, and a slide pipe 412 is provided at one end of the joint body 411.
Is slidably fitted and sealed by a sealing material such as rubber packing, but the connecting portion 413 at the opposite end of the joint body 411 is configured as a receiving port. The expansion joint 510 of the present invention is also shown in FIG.
It has the form of a 0 ° elbow, but it has a reduced diameter elbow. A slide pipe 512 is slidably fitted to one end of the joint body 511 and is sealed by a sealing material such as a rubber packing, but a connecting portion 513 at the opposite end of the joint body 511 receives a small-diameter pipe or the like. It is configured as a mouth. Although all of the expansion joints 210, 310, 410, 510 are in the form of 90 ° elbows, they may be in the form of 45 ° elbows.

[0045]

The expansion joint of the present invention according to claim 1 is
When configuring a part of piping equipment such as drainage piping,
Since the slide pipe slides and the length of the pipe is adjusted, the work for adjusting the pipe length is not required, and the connection with the pipe member can be performed in a short time and with less labor.

The pipe connecting device of the present invention according to claim 2 is
When configuring a part of piping equipment such as drainage piping,
Not only does the slide tube of the expansion joint slide to adjust the pipe length and the work to match the pipe length is not necessary,
Since the flexible tube bends and the displacement of the pipe member connected to the expansion joint is also corrected, the connection with the pipe member can be performed in a short time and with less labor.

The pipe connecting device of the present invention according to claim 3 is
When configuring a part of piping equipment such as drainage piping,
By sliding the slide pipe of each expansion joint, the pipe length between the piping members can be adjusted in two different directions.Therefore, the work for adjusting the pipe length is not required, and the connection with the piping members is not required. It can be done in a short time and with little effort.

The pipe connecting device of the present invention according to claim 4 is
The rotating body supports the slide tube, and when the slide tube slides, the rotating body rotates and guides the slide tube. Therefore, even if the slide tube is long, it is possible to smoothly slide the slide tube. it can. After the connection work, even if the pipe including the pipe connecting device vibrates, the vibration is absorbed by the rotation of the rotating body.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of an expansion joint of the present invention.

FIG. 2 is a front view showing an embodiment of a pipe connecting device using the expansion joint of the present invention.

FIG. 3 is a side view in which a part of the pipe connection device shown in FIG. 2 is cut away.

FIG. 4 is an enlarged cross-sectional view taken along the line 6-6 of FIG.

5 is a perspective view of a guide table in the pipe connecting device shown in FIG.

FIG. 6 is a front view showing another embodiment of the pipe connecting device using the expansion joint of the present invention.

FIG. 7 is a partially cutaway front view showing another embodiment of the expansion joint of the present invention.

FIG. 8 shows still another embodiment of the expansion joint of the present invention,
It is the front view which a part was broken.

FIG. 9 shows still another embodiment of the expansion joint of the present invention,
It is the front view which a part was broken.

FIG. 10 is a partially cutaway front view showing still another embodiment of the expansion joint of the present invention.

FIG. 11 is a partially cutaway front view showing still another embodiment of the expansion joint of the present invention.

[Explanation of symbols]

10, 110, 210, 310, 410, 510 ... Expansion joint 11, 111, 211, 311, 411, 511 ... Joint body 12, 112, 212, 312, 412, 512 ... Slide tube 13, 113 ... Connection part 15, 115 ... Sealing material 31 ... Flexible tube 61A ... Pipe joint 53 that changes axial direction ... Rotating body 51 ... Guide stand 61D, 61C, 61E, 61B, 161 ... Piping member

Claims (4)

[Claims] 1. An expansion joint for connecting a pair of pipe members, the joint main body having a joint body connected to one of the pipe members and a slide pipe connected to the other of the pipe members. A sealing material is interposed between the inner peripheral surface of the slide tube and the outer peripheral surface of the slide tube, and the slide tube is slidably inserted into the joint body along the axial direction. Expansion joint to be. 2. A pipe connecting device using the expansion joint according to claim 1, wherein a flexible pipe is connected in an axial direction of the expansion joint. 3. The expansion joint according to claim 1, wherein at least a pair of the expansion joints are provided, and the axial direction of each expansion joint is different at a predetermined angle. Pipe connection device. 4. A guide base for supporting the slide tube by providing a rotating body which is in rotary contact with the slide tube to enable the slide tube to be slid. A pipe connecting device using the expansion joint according to any one of claims.