JPH10205665A - Pipe joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a drain pipe and a catch basin in a state of being sufficiently resistible to an earthquake, even the catch basin is not of a synthetic resin. SOLUTION: This pipe joint is equipped with a saddle 1 whose opening part is installed in the center, a socket 2 erected in a peripheral edge of the opening part, an elastic cylindrical body 3 being made up in a tubular form by rubber, and inserted into the socket 2 in a state that the outer circumferential surface is stuck fast to the inner circumferential surface of the socket 2, an elastic cap 4 being formed by rubber and attached to an opening end of the socket 2, and a cover 5 being installed at the outside of this elastic cap 4 and made up of vinyl chloride resin being harder than this elastic cap 4, and in this constitution, the elastic cylindrical body 3 is made up of a cylindrical part 31 and three ribs 32 so as to make the outer diameter come to more than 1.4 times, and a pipe insertional hole 41 of almost the same diameter as an inner diameter of this elastic cylindrical body 3 is installed in the center of the elastic cap 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint applied to a connection between a drainage basin buried underground and a drainage pipe.

[0002]

2. Description of the Related Art When an earthquake occurs, the vibration of a building or the distortion of the ground causes a displacement in a positional relationship between a drainage pipe for building equipment piped in the building and a drainage pit buried underground. Is revealed.

When the drainage basin is made of synthetic resin, as shown in FIG. 15, the building equipment drainage pipe 10 and the drainage basin 20 are generally connected via an outdoor drainage pipe 30 made of resin. One end of the outdoor drain pipe 30 is connected to the building equipment drain pipe 10.
And the other end of the outdoor drain pipe 30 is connected to the drain basin 2
0 is fixed to a receiving port 201 provided with an adhesive.

[0004] When the drainage basin is made of ceramic or concrete, the end of the outdoor drainage pipe is inserted into a receptacle provided on the side wall of the drainage basin, and mortar is filled therebetween to fix the outdoor drainage pipe. I have.

[0005]

However, in the above-mentioned conventional technology, the building equipment drain pipe 10 and the outdoor drain pipe 30 are not provided.
And the connection between the outdoor drain pipe 30 and the receptacle 201 of the drainage basin 20 cannot absorb the displacement of the positional relationship between the building equipment drainage pipe 10 and the drainage basin 20 at all. If this occurs, shear stress, indentation, and pullout stress act on the outdoor drainage pipe 30, and there is a problem that breakage tends to occur particularly at the connection part.

[0006] Incidentally, as described in Japanese Utility Model Publication No. 4-12144, the mouth of the drainage basin is a rubber ring socket having a rubber ring mounted on the inner peripheral portion thereof, and an outdoor drainage pipe is inserted into the rubber ring socket. Connection structures that are simply inserted are also known. In this conventional technology, the outdoor drain pipe is movable in the rubber ring receiving port in the axial direction, so that the displacement of the positional relationship between the building equipment drain pipe and the drainage basin can be absorbed only in the axial direction of the outdoor drain pipe. I can do it. However,
Since there is almost no difference between the inner diameter of the receptacle and the outer diameter of the outdoor drainage pipe, the end of the outdoor drainage pipe hits a step provided at the back of the receptacle, so that the movable range of the outdoor drainage pipe is small. Moreover, in order to minimize the gap between the receiving port and the outdoor drain pipe, the cross-sectional shape of the rubber ring is reduced, and a groove for mounting the rubber ring is provided on the inner peripheral surface of the receiving port. However, the outdoor drainage pipe is hardly movable in the radial direction. In other words, the direction in which the positional relationship between the drainage pipes of the building equipment and the drainage basin can be absorbed is limited, and the extent of the displacement is very small, so it cannot be said that sufficient measures have been taken against earthquakes.

[0007] The applicant of the present application has filed an invention described in Japanese Patent Application No. 8-47535 to solve the above problems. According to the present invention, in a connection structure in which a receiving port is provided on a side wall of a drainage basin and an end of an outdoor drainage pipe is connected in a state of being inserted into the receiving port, an inner diameter of the receiving port is smaller than an outer diameter of the outdoor drainage pipe. 1.4 times or more, between the receptacle and the outdoor drain pipe, an elastic tubular body having elasticity capable of holding the outdoor drain pipe at the center of the receptacle is interposed, and the open end of the receptacle is It has an insertion hole for inserting the outdoor drainage pipe, and is sealed by an elastic cap that can be elastically deformed following the movement of the outdoor drainage pipe.

That is, in this connection structure, the outdoor drainage pipe is slidable in the axial direction in the insertion hole of the elastic tubular body and the elastic cap, and is radially moved by an amount by which the elastic tubular body is compressed and deformed. Is also movable, so that the displacement of the positional relationship between the building equipment drain pipe and the drain basin can be absorbed in all directions. In addition, even if a gap is formed between the elastic tubular body and the receiving port or between the elastic tubular body and the outdoor drain pipe due to the radial movement of the outdoor drain pipe, the movement of the outdoor drain pipe is prevented. Following the elastic cap, the elastic cap is elastically deformed, and the position of the insertion hole also moves, so that the closed state of the opening end of the receiving port is maintained, and water does not leak from the receiving port.

However, the connection structure between the drain pipe and the drainage basin of the prior application can be easily applied when the drainage basin is made of synthetic resin, but is applicable when the drainage basin is made of ceramic or concrete. Is difficult.

In view of the above, the present invention focuses on the above-mentioned problems, and proposes a pipe joint which can connect a drain pipe and a drain basin in a state capable of sufficiently withstanding earthquake even when the drain basin is not made of synthetic resin. It is intended to provide.

[0011]

Means for Solving the Problems In order to achieve the above object, in the pipe joint according to the first aspect, a saddle having an opening in the center, a receiving port provided upright on the periphery of the opening, An elastic tubular body formed of an elastic material into a cylindrical shape, the outer peripheral surface of which is inserted into the receptacle with the outer peripheral surface being in close contact with the inner peripheral surface of the receptacle; an opening end of the receptacle formed of an elastic material; An elastic cap attached to the elastic cylindrical body, wherein the elastic cylindrical body is formed so that an outer diameter is 1.4 times or more an inner diameter, and an inner diameter of the elastic cylindrical body is provided at a center of the elastic cap. The pipe joint according to claim 2 is provided with a tube insertion hole having substantially the same diameter as that of the tube joint, wherein the elastic tubular body has a tubular portion and an outer periphery of the tubular portion. And a plurality of ribs provided around There is a structure that is in close contact with the inner circumferential surface of the receptacle, in the pipe joint according to claim 3, claim 1
Alternatively, in the pipe joint according to Item 2, a cover made of a harder material than the elastic cap is provided outside the elastic cap.

[0012]

According to the pipe joint of the first aspect, when connecting the drainage basin and the drainage pipe, the saddle is fixed to the side wall of the drainage tub in a state of being in close contact with the drainage tub, and the drainage pipe is inserted through the pipe insertion hole of the elastic cap. Then, the end of the drain pipe is made to penetrate the elastic tubular body. The drain pipe has a size whose outer diameter is substantially equal to the inner diameter of the elastic cap, and the outer peripheral surface of the drain pipe and the inner peripheral surface of the elastic cylindrical body and the peripheral edge of the pipe insertion hole of the elastic cap are in close contact. To do. In addition, a hole of a size corresponding to the opening of the saddle is previously formed in the side wall of the drainage basin at the position where the saddle is to be in close contact, or a hole of a size corresponding to the opening of the saddle after the saddle is in close contact. To open.
When the saddle is closely attached to the side wall of the drainage basin, for example, the saddle is bonded and fixed to the side wall of the drainage basin with an adhesive, and the fixing strength is further reinforced by a number line. In this method, the saddle can be firmly fixed even if the drainage basin is made of a material other than synthetic resin, for example, porcelain or concrete.

In such a connection structure between the drain pipe and the drain basin, the drain pipe is slidable in the axial direction in the insertion hole of the elastic tubular body and the elastic cap, and the elastic tubular body is compressed. Since it is possible to move in the radial direction by the amount of deformation, it is possible to absorb the displacement of the positional relationship between the drain pipe and the drain basin in all directions. Moreover, even if a gap is created between the elastic tubular body and the receiving port or between the elastic tubular body and the outdoor drain pipe due to the radial movement of the drain pipe, the drain pipe follows the movement of the drain pipe. Since the elastic cap is elastically deformed and the position of the tube insertion hole also moves, the closed state of the opening end of the receptacle is maintained, and water does not leak from the receptacle.

In the pipe joint according to the second aspect, the elastic tubular body is composed of a tubular portion and a plurality of ribs provided on the outer periphery of the tubular portion, and the tips of these ribs are formed on the inner peripheral surface of the receptacle. Because of this, high elasticity can be secured between the inner peripheral surface of the receiving port and the elastic cylindrical body without hindering the radial deformation of the elastic cylindrical body.

In the pipe joint according to the third aspect, since the cover made of a harder material than the elastic cap is provided on the outside of the elastic cap, the elastic cap can be protected from ultraviolet rays and hardened by a stone or the like. You can also protect from things.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, based on FIGS.
The pipe joint according to the first embodiment will be described in detail. FIG. 1 is a perspective view showing a state where the pipe joint of the first embodiment is fixed to a drainage basin,
2 is a cross-sectional view showing a state where the pipe joint of the first embodiment is fixed to a drainage basin, FIG. 3 is a plan view of the pipe joint of the first embodiment, FIG. 4 is a side view of the pipe joint of the first embodiment, FIG. 5 shows S1 of FIG.
It is -S1 sectional drawing.

First, the configuration of the pipe joint according to the first embodiment will be described. The pipe joint J1 includes a saddle 1, a receiving port 2, an elastic tubular body 3, an elastic cap 4, and a cover 5.

The saddle 1 is formed by bending a circular plate having a circular opening 11 at the center thereof so as to be able to adhere to the outer peripheral surface of the side wall of the drainage basin M1 formed in a cylindrical shape. Is formed.

The receiving port 2 is formed in a cylindrical shape, and is provided upright on the periphery of the opening 11 of the saddle 1. A groove 21 is provided on the inner peripheral surface of the receiving port 2. The saddle 1 and the receiving port 2 are integrally formed of a synthetic resin such as a hard vinyl chloride resin by injection molding or the like.

The elastic tubular body 3 is composed of a cylindrical portion 31 and a plurality of ribs 32 provided on the outer periphery thereof.
It is inserted in the receptacle 2. The ribs 32 are disposed at regular intervals in the axial direction of the cylindrical portion 31, and have a height set so that the tip thereof is in close contact with the inner peripheral surface of the receptacle 2. That is, two of the plurality of ribs 32 have their tips fitted in the grooves 21 of the receptacle 2, thereby restricting the axial movement of the elastic tubular body 3. Further, on the inner peripheral surface of the elastic cylindrical body 3, extremely small ridges 33 are provided at positions corresponding to the respective ribs 32. Also,
The elastic cylindrical body 3 has an outer diameter, that is, an outer diameter of the rib 32,
It is formed to be at least 1.4 times the inner diameter.

The elastic cap 4 is attached to the opening end of the receptacle 2, and the outer peripheral portion is fixed to the receptacle 2 by a band 6. A tube insertion hole 41 having substantially the same diameter as the inner diameter of the elastic tubular body 3 is provided at the center, and a bellows portion 42 is provided on the outer periphery of the tube insertion hole 41.
That is, the elastic cap 4 is capable of displacing the tube insertion hole 41 in the radial direction even while the outer peripheral portion is fixed to the receptacle 2.

The cover 5 is formed of a circular plate provided with a tube insertion hole 51 at the center.
Is provided on the outside. The elastic cylindrical body 3 and the elastic cap 4 are formed of rubber, and the cover 5 is formed of a vinyl chloride resin harder than the elastic cylindrical body 3 and the elastic cap 4.

Next, using the pipe joint J1, a drainage basin M1
The case where the drain pipe P is connected to the drain pipe P will be described. First,
The saddle 1 is fixed to the side wall of the drainage basin M1 in close contact with the drainage tub M, and the drainage pipe P is inserted through the pipe insertion hole 41 of the elastic cap 4 so that the end of the drainage pipe P penetrates the elastic tubular body 3. . The drain pipe P has a size whose outer diameter is substantially equal to the inner diameter of the elastic cap 4. The outer peripheral surface of the drain pipe P, the inner peripheral surface of the elastic cylindrical body 3, and the pipe insertion hole 41 of the elastic cap 4 are used. The peripheral part should be in close contact. Watertightness between the outer peripheral surface of the drain pipe P and the inner peripheral surface of the elastic tubular body 3 is further ensured by the ridges 33 provided on the inner peripheral surface of the elastic tubular body 3.

In addition, a hole having a size corresponding to the opening of the saddle 1 is previously formed in the side wall of the drainage basin M1 at a position where the saddle 1 is brought into close contact, or the opening of the saddle 1 is made after the saddle 1 is brought into close contact. Make a hole of the size corresponding to the part.

When the saddle 1 is brought into close contact with the side wall of the drainage basin M1, for example, the saddle 1 is attached to the drainage basin M with an adhesive.
It is preferable that the fixing strength is further fixed to the side wall of the first side by the adhesive line. In this method, the saddle 1 can be firmly fixed to the side wall of the drainage basin M1 even if the drainage basin M1 is made of a material other than synthetic resin, for example, a basin or concrete.

Further, the elastic cap 4 may be attached to the drain pipe P in advance, and the drain pipe P may be inserted into the elastic tubular body 3 and then attached to the opening end of the receptacle 2. Similarly, the cover 5 may be attached to the drain pipe P in advance.

In the connection structure between the drainage pipe P and the drainage basin M1, the drainage pipe P is slidable in the axial direction in the insertion hole 41 of the elastic cylindrical body 3 and the elastic cap 4, and
Since the elastic cylindrical body 3 can be moved in the radial direction by the amount of compressive deformation, the displacement of the positional relationship between the drain pipe P and the drainage basin M1 can be absorbed in all directions. In other words, it is possible to alleviate the indentation stress, pull-out stress, and shear stress acting on the drain pipe P when the ground is displaced due to uneven settlement, heavy vehicle traffic, an earthquake, or the like.

Moreover, even if the drain pipe P moves in the radial direction, a gap is formed between the elastic tubular body 3 and the receiving port 2 or between the elastic tubular body 3 and the outdoor drain pipe P. Since the elastic cap 4 is elastically deformed following the movement of the drain pipe P and the position of the pipe insertion hole 41 is also displaced, the closed state of the open end of the receptacle 2 is maintained, and No water leaks.

Further, since the distal end of the rib 32 provided around the elastic cylindrical body 3 is in close contact with the inner peripheral surface of the receiving port 2, the elastic cylindrical body 3 is not obstructed from being radially compressed and deformed. In addition, high waterproofness can be secured between the inner peripheral surface of the receiving port 2 and the elastic tubular body 3.

That is, in the pipe joint J1 of the first embodiment, even if the drainage basin M1 is not made of synthetic resin, the drainage pipe P and the drainage basin M1 are connected in a state capable of sufficiently withstanding an earthquake. Next, a pipe joint J2 according to the second embodiment will be described with reference to FIGS. In the pipe joint J2 of the second embodiment, the saddle 1A is formed in a square planar shape. Since other configurations are the same as those of the first embodiment, the same reference numerals are given to the drawings as those of the first embodiment, and the description is omitted.

Next, a pipe joint J3 according to a third embodiment will be described with reference to FIGS. Embodiment 3
10 has a saddle 1B having a square planar shape and a flat shape.
Further, it can be tightly fixed to a square cylindrical drainage basin M2 as shown in FIG. In addition, the saddle 1B
And the receiving port 2 are separately bonded and then bonded together.
The other configuration is the same as that of the first embodiment,
The same reference numerals as in Embodiment 1 denote the drawings, and a description thereof will be omitted.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to the embodiments, and changes in the design and the like can be made without departing from the gist of the present invention. Even if present, it is included in the present invention. For example,
In the embodiment, the example in which the receiving port 2 is formed in a cylindrical shape is shown, but the cross-sectional shape of the receiving port 2 can be appropriately set according to the cross-sectional shape of the drain pipe P. Further, the cross-sectional shape of the elastic tubular body 3 is not limited to the shape shown in the embodiment,
For example, it may be formed by an outer cylinder and an inner cylinder and a rib connecting them.

[0033]

As described above, in the pipe joint according to the first aspect, even if the drainage basin is made of a material other than synthetic resin, the drainage pipe and the drainage basin are in a state capable of sufficiently withstanding earthquake. The effect of being able to connect is obtained.

[0034] In the pipe joint according to the second aspect, the elastic tubular body is composed of a tubular portion and a plurality of ribs provided around the outer periphery of the tubular portion. Because it is in close contact with the inner peripheral surface, it is possible to secure high water stopping between the inner peripheral surface of the receiving port and the elastic cylindrical body without hindering the radial deformation of the elastic cylindrical body. The effect is obtained.

In the pipe joint according to the third aspect, since the cover made of a harder material than the elastic cap is provided outside the elastic cap, the elastic cap may be deteriorated by ultraviolet rays or hard such as stone. This has the effect of preventing the object from being damaged.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a connection structure between a drain pipe and a drain basin using the pipe joint of the first embodiment.

FIG. 2 is a cross-sectional view showing a connection structure between a drain pipe and a drain basin using the pipe joint of the first embodiment.

FIG. 3 is a plan view of the pipe joint according to the first embodiment.

FIG. 4 is a side view of the pipe joint according to the first embodiment.

FIG. 5 is a sectional view taken along line S1-S1 of FIG.

FIG. 6 is a perspective view showing a connection structure between a drain pipe and a drain basin using the pipe joint of the second embodiment.

FIG. 7 is a plan view of a pipe joint according to a second embodiment.

FIG. 8 is a side view of the pipe joint according to the second embodiment.

FIG. 9 is a sectional view taken along line S2-S2 of FIG.

FIG. 10 is a perspective view showing a connection structure between a drain pipe and a drain basin using the pipe joint according to the third embodiment.

FIG. 11 is a sectional view showing a connection structure between a drain pipe and a drain basin using the pipe joint of the third embodiment.

FIG. 12 is a plan view of a pipe joint according to a third embodiment.

FIG. 13 is a side view of a pipe joint according to a third embodiment.

FIG. 14 is a sectional view taken along line S3-S3 of FIG. 4;

FIG. 15 is a diagram showing a conventional connection structure between a drain pipe and a resin drain basin.

[Explanation of symbols]

 P Drain pipe M1, M2 Drain basin J1, J2, J3 Pipe joint 1 Saddle 2 Reception port 3 Elastic cylindrical body 32 Rib 4 Elastic cap 41 Pipe insertion hole 5 Cover

Claims (3)

[Claims] 1. A saddle having an opening provided at a center thereof, a receiving port provided upright on the periphery of the opening, and a tubular shape made of an elastic material, and an outer peripheral surface formed on an inner peripheral surface of the receiving port. An elastic tubular body inserted into the receptacle in a tightly contacted state, and an elastic cap formed of an elastic material and attached to an open end of the receptacle, wherein the elastic tubular body is A pipe joint characterized by being formed so that its diameter becomes 1.4 times or more the inner diameter, and a pipe insertion hole having substantially the same diameter as the inner diameter of the elastic tubular body is provided at the center of the elastic cap. 2. The elastic tubular body includes a tubular portion and a plurality of ribs provided around the outer periphery of the tubular portion, and the tips of these ribs are in close contact with the inner peripheral surface of the receptacle. The pipe joint according to claim 1, wherein: 3. The pipe joint according to claim 1, wherein a cover formed of a harder material than the elastic cap is provided outside the elastic cap.