JPH10204977A - Catch basin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a catch basin which can absorb in all directions a displacement of the basin from any drain pipe of a building facility and can prevent an outdoor drain pipe from having a reverse gradient to the draining direction. SOLUTION: A socket 411 to accept insertion of an outdoor drain pipe 3 is furnished at the side wall, and the inside diameter of the socket 411 at the two ends about the longitudinal direction should be 1.4 times or more as larger as the outside diameter of the outdoor drain pipe 3, and the part between them is given a greater diameter, and on the inside of the socket 411 cylindrical formation is made along the inside surface of the socket 411. A resilient cylinder piece 8 capable of holding the drain pipe 3 in the center of the socket 411 is interposed, and the open end of the socket 411 has an insert hole to accept insertion of the drain pipe 3 and tight seal is generated with a resilient cap 7 capable of elastic deformation in compliance with the movement of the drain pipe 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a drainage basin connected to an outdoor drainage pipe buried underground.

[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. By the way, as shown in FIG. 8, the resin-made building drainage pipe 10 and the resin-made drainage basin 20 are generally connected via a resinous outdoor drainage pipe 30. One end is fixed to the building equipment drain pipe 10 with an adhesive, and the other end of the outdoor drain pipe 30 is fixed to a receptacle 201 provided in the drain basin 20 with an adhesive.

[0003]

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.

[0004] Incidentally, as described in Japanese Utility Model Publication No. 4-12144, the receptacle of the drainage basin is a rubber ring receptacle having a rubber ring mounted on the inner periphery thereof, and an outdoor drainage pipe is provided in the rubber ring receptacle. 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.

[0005] In view of the above, the present invention focuses on the above-described problem, and prevents the displacement of the elastic tubular body by preventing the displacement.
It is an object of the present invention to ensure that the displacement of the positional relationship between the building equipment drain pipe and the drain basin can be absorbed in all directions.

[0006]

Means for Solving the Problems In order to achieve the above object, according to the first aspect of the present invention, in a drainage basin in which a receiving port into which an outdoor drainage pipe is inserted is provided on a side wall, the receiving port has a longitudinal shape. The inner diameter of both ends in the direction is at least 1.4 times the outer diameter of the outdoor drainage pipe, the gap between them is formed to be larger than both ends, and between the receptacle and the outdoor drainage pipe, An elastic tubular body that is formed in a cylindrical shape along the inner peripheral surface of the receiving port and has elasticity capable of holding the outdoor drainage pipe at the center of the receiving port is interposed, and the opening end of the receiving port is A configuration having an insertion hole for inserting the outdoor drainage pipe and being sealed by an elastic cap capable of elastic deformation following the movement of the outdoor drainage pipe,
In the invention according to claim 2 of the present invention, in the drainage basin according to claim 1, a plurality of ribs are provided around an outer peripheral portion of the elastic tubular body, and tips of these ribs are formed on an inner peripheral surface of the receptacle. It was configured to be in close contact with.

[0007]

In the drainage basin according to the first aspect of the present invention, an outdoor drain pipe having an end inserted inside the elastic tubular body can slide in the axial direction within the insertion hole of the elastic tubular body and the elastic cap. In addition, since the elastic cylindrical body can be moved in the radial direction by the amount of compressive deformation, 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 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,
No water leaks from the receptacle. In addition, the allowable displacement of the outdoor drainage pipe in the radial direction can be more secured when the difference between the outer diameter of the outdoor drainage pipe and the inner diameter of the receptacle is larger, but in the present invention, the inner diameter of the receptacle is outside of the outdoor drainage pipe. Since the diameter is set to be 1.4 times or more the diameter, the difference can be sufficiently secured.

[0008] The receiving port of the drainage basin may be
The middle portion is formed to have a larger diameter than both ends, and the outer peripheral surface of the elastic tubular body extends along the inner peripheral surface of the receiving port, so that the entire receiving port restricts the movement of the elastic cylindrical body in the axial direction. be able to. That is, it is possible to reliably prevent the elastic tubular body from moving axially in the receptacle together with the outdoor drainage pipe when the outdoor drainage pipe is inserted and pulled back.

In the drainage basin according to the second aspect of the present invention, a plurality of ribs are provided around the outer periphery of the elastic tubular body, and the tips of these ribs are in close contact with the inner peripheral surface of the receiving port. 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 body from being compressed and deformed in the radial direction.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, based on FIGS.
The drainage basin according to the first embodiment will be described in detail. FIG. 1 is a diagram showing a part of a drainage channel employing the drainage basin of Embodiment 1, FIG. 2 is a longitudinal sectional view showing the drainage basin of Embodiment 1, and FIG.
In the figure, 1 is a foundation of a building, 2 is a drain pipe for building equipment, 3 is an outdoor drain pipe, 3a is a drain pipe on site, and 4 is a drainage basin.

The outdoor drain pipe 3 is laid underground through the foundation 1 of a building, one end of which is connected to the building equipment drain pipe 2 via an elbow 6, and the other end of which is connected to the drain box 4. It is connected.

As shown in FIGS. 1 and 2, the drainage basin 4 includes an invert 41 made of a vinyl chloride resin, an extension ring 42 made of a vinyl chloride resin, a lid 43 made of cast iron,
And the lid 43 is buried at a depth substantially coinciding with the ground surface.

The invert 41 has a receptacle 411 into which one end of the outdoor drain pipe 3 is inserted, and a site drain pipe 3a.
412 inserted into one end of the
2 has an upper surface opening 413 into which the lower end is inserted, and the receiving port 411 and the receiving port 412 are formed at positions substantially opposed to each other. Also, the upper surface opening 413
Is formed in a slightly enlarged shape similarly to the receiving port 411, and a groove 414 is formed on an inner peripheral surface thereof, and a rubber ring 415 is mounted in the groove 414. Further, a groove 416 for mounting a rubber ring is provided on the inner peripheral surface of the receiving port 411. Also, the receiving port 411
The outer end of the pipe is 1.4 times or more the outer diameter of the outdoor drainage pipe, and the gap between the two ends is larger than the both ends. That is, the receiving port 411 has the smallest diameter at both ends in the longitudinal direction and the largest diameter at the center in the longitudinal direction, and extends from both ends toward the center between both ends.
It has two conical surfaces.

The drainage basin 4 can be formed by subjecting a receiving port of an existing drainage basin to thermal processing. However, when an existing drainage basin is used, a drainage basin in which the nominal diameter of the receiving port 411 of the invert 41 is larger than the nominal diameter of the outdoor drainage pipe 2 by two or more sizes is used.

That is, since there are currently used outdoor drainage pipes 3 having a nominal diameter of 75 mm and 100 mm, when an outdoor drainage pipe 3 having a nominal diameter of 75 mm is used, the invert 41 is connected to the receiving port 411. In the case of using an outside drain pipe 3 having a nominal diameter of 150 mm or 200 mm and a nominal diameter of 100 mm, the invert 41 has a nominal diameter of the receiving port 411 of 200 mm.
Use those. And an outdoor drainage pipe 3 with a nominal diameter of 75 mm
Is inserted into the center of the receiving port 411 having a nominal diameter of 150 mm.
When a 38 mm gap is formed and the outdoor drain pipe 3 having a nominal diameter of 75 mm is inserted into the center of the receptacle 411 having a nominal diameter of 200 mm, the gap between the receptacle 411 and the outdoor drain pipe 3 is about 64 mm over the entire circumference.
When the outdoor drain pipe 3 having a nominal diameter of 100 mm is inserted into the center of the receptacle 411 having a nominal diameter of 200 mm, the receptacle 4
A gap of about 51 mm is formed between the outer pipe 11 and the outdoor drain pipe 3 over the entire circumference. In addition, as described above, with respect to the nominal diameter of the outdoor drain pipe 3,
It is desirable that the nominal diameter of 11 is larger than 2 sizes,
The difference between the nominal diameter of the outdoor drain pipe 3 and the nominal diameter of the receptacle 411 may be one (for example, a nominal diameter of 100 m).
Even if the outdoor drain pipe 3 having a diameter of 150 m is inserted into the center of the receptacle 411 having a nominal diameter of 150 mm, a gap of about 26 mm is formed between the receptacle 411 and the outdoor drain pipe 3 over the entire circumference).

Another difference of the drainage basin 4 of the first embodiment from the conventional drainage basin is that an elastic tubular body 8 is interposed between the receiving port 411 and the outdoor drainage pipe 3. And the open end of the receiving port 411 is sealed by the elastic cap 9.

The elastic tubular body 8 is formed of rubber having elasticity capable of holding the outdoor drain pipe 3 at the center of the receptacle 411. As shown in FIG.
Is provided around the outer periphery. The lengths of the ribs 81 are set in accordance with the inner surface shape of the war receptacle 411, and the tips of all the ribs 81 are in close contact with the inner peripheral surface of the receptacle 411. Thereby, high water stoppage is secured between the inner peripheral surface of the receiving port 411 and the elastic tubular body 8. In addition, on the inner peripheral surface of the elastic tubular body 8, circumferentially continuous ridges 80 are provided at positions corresponding to the positions between the ribs 81.
Is formed, and a high water stopping property is secured between the outdoor drainage pipe 3 and the elastic tubular body 8.

The elastic cap 7 is connected to the outdoor drain pipe 3.
Is formed of rubber that can be elastically deformed following the movement of
And an insertion hole 72 for inserting the outdoor drain pipe 3 is provided at the center. The space between the overlapping portion 71 and the insertion hole 72 is formed in a bellows shape. Also,
A rising portion 73 is provided at a peripheral portion of the insertion hole 72, and the adhesion to the outdoor drain pipe 35 is sufficiently ensured. The overlapping portion 72 is fastened and fixed to the receptacle 411 by the metal band 9.
The rising portion 73 is not fixed to the outdoor drain pipe 3. That is, the outdoor drain pipe 3 can slide in the insertion hole 72 of the elastic cap 7 in the axial direction.

The procedure for connecting the outdoor drainage pipe 3 to the receptacle 411 of the drainage basin 4 is as follows. First, the elastic tubular body 8 and the elastic cap 7 are attached to the outside of the outdoor drainage pipe 3 before the outdoor drainage pipe 3 is connected. 3 may be inserted into the receiving port 411, or after attaching the elastic tubular body 8 and the elastic cap 7 to the receiving port 411, the outdoor drain pipe 3 is inserted into the center of the elastic tubular body 8 and the elastic cap 7. You may do so.

That is, in the connection structure using the drainage basin 4 of the first embodiment, the outdoor drainage pipe 3 is
And the elastic cap 7 is slidable in the axial direction in the insertion hole 72, and is also movable in the radial direction by an amount by which the elastic tubular body 8 is compressed and deformed.
Can be absorbed in all directions. That is, it is possible to alleviate the indentation stress, pull-out stress, and shear stress acting on the outdoor drain pipe 3 when the ground is displaced due to uneven settlement, heavy vehicle traffic, earthquake, or the like.

Further, it is assumed that a gap is generated between the elastic tubular body 8 and the receiving port 411 (or between the elastic tubular body 8 and the outdoor drain pipe 3) due to the radial movement of the outdoor drain pipe 3. Also, the elastic cap 7 is elastically deformed following the movement of the outdoor drain pipe 3, and the position of the insertion hole 72 also moves, so that the open end of the receiving port 411 is maintained in a sealed state, and water leaks from the receiving port 411. There is no. In addition, the larger the difference between the outer diameter of the outdoor drain pipe 3 and the inner diameter of the receiving port 411 can secure a larger allowable amount of movement of the outdoor drain pipe 3 in the radial direction. Since the inner diameter is formed to be at least 1.4 times the outer diameter of the outdoor drainage pipe 3, the difference can be sufficiently ensured.

The receiving port 411 of the drainage basin 4 has a larger diameter at the center than at both ends.
The tips of all the ribs 81 formed on the outer peripheral surface of the elastic tubular body 8 are in close contact with the inner peripheral surface of
The movement of the elastic tubular body 8 in the axial direction can be restricted as a whole. That is, when the outdoor drain pipe 3 is inserted or pulled back, the elastic tubular body 8 can be reliably prevented from moving in the receiving port 411 in the axial direction together with the outdoor drain pipe 3. Further, since the distal ends of all the ribs 81 are in close contact with the inner peripheral surface of the receiving port 411, the inner peripheral surface of the receiving port 411 and the elastic cylindrical shape are not hindered from compressive deformation of the elastic cylindrical body 8 in the radial direction. High waterproofness can be secured between the body 8 and the body 8.

That is, in the drainage basin of the first embodiment, the displacement of the elastic tubular body 8 when the outdoor drainage pipe 3 is inserted and when the outdoor drainage pipe 3 is pulled back can be prevented. Thus, it is possible to surely absorb the displacement of the positional relationship between the building equipment drain pipe 2 and the drain basin 4 in all directions.

Next, a drainage basin according to the second embodiment will be described with reference to FIG. In the drainage basin according to the second embodiment, the receiving port 411a has the smallest diameter at both ends in the longitudinal direction and is formed to have a larger diameter than both ends, and the space between both ends extends from both ends toward the center. Two conical surfaces,
And a circumferential surface provided between the conical surfaces. The length of the rib 81a of the elastic tubular body 8a is also set according to the inner surface shape of the receiving port 411a, and the tips of all the ribs 81a are in close contact with the inner peripheral surface of the receiving port 411b. The other configuration and operation are the same as those in the first embodiment, and a description thereof will not be repeated.

Next, a drainage basin according to the third embodiment will be described with reference to FIG. In the drainage basin according to the third embodiment, the receiving port 411b has the smallest diameter at both ends in the longitudinal direction and is formed to have a larger diameter than both ends, and the space between both ends extends from both ends toward the center. Two conical surfaces,
An annular concave portion 410 having a concave inside and a convex outside is provided substantially at the center of the circumferential surface. The length of the rib 81b of the elastic tubular body 8a is also determined by the size of the receiving port 411b.
Of the ribs 81
The tip of b is in close contact with the inner peripheral surface of the receptacle 411b. In addition, one end of the plurality of ribs 81b is inserted into the inside of the annular concave portion 410, and
The movement of b in the axial direction is restricted. The other configuration and operation are the same as those in the first embodiment, and a description thereof will not be repeated.

Next, a drainage basin according to the fourth embodiment will be described with reference to FIG. In the drainage basin of the fourth embodiment, the receiving port 411c has the smallest diameter at both ends in the longitudinal direction and the largest diameter at the center in the longitudinal direction, and has a curved surface between the center and both ends. The other configuration and operation are the same as those in the first embodiment, and a description thereof will not be repeated.

Next, a drainage basin according to the fifth embodiment will be described with reference to FIG. In the drainage basin of the fifth embodiment, the cover 5 is provided outside the elastic cap 7. The cover 5 has a larger outer diameter than the elastic cap 7 made of vinyl chloride resin, and has a hole 51 in the center.
The outdoor drain pipe 3 is inserted through the hole 51. That is, the cover 5 can prevent the elastic cap 7 from being distorted by earth pressure.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and a design change or the like may 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 drainage basin 4 is configured by the invert 41, the extension ring 42, and the lid 43 is shown, but the drainage basin 4 may be configured by only the invert 41 and the lid 43. Further, in the embodiment, the drainage basin 4 (a drainage basin in which the receiving port 411 and the outlet 412 face each other) used in the straight portion of the pipe is shown, but the drainage basin (the receiving port and the drainage port) used in the bent portion of the pipe is shown. A connection structure between the drainage basin whose outlet is different from that of, for example, 90 degrees) and the outdoor drainage pipe 3, or a drainage basin used at the junction (a drainage basin provided with a plurality of receiving ports)
And the drainage pipe 3 may be connected. Further, in the embodiment, an example is shown in which the space between the overlapping portion of the elastic cap and the insertion hole is formed in a bellows shape, but this portion is formed in a bellows shape if it has sufficient elasticity. It is not necessary. Further, the shape of the rib of the elastic cylindrical body is not limited to the plate shape shown in the embodiment, but may be any shape such as a triangular cross section.

[0029]

As described above, according to the first aspect of the present invention,
In the drainage basin described, it is possible to prevent the displacement of the elastic tubular body when the outdoor drainage pipe is inserted and when it is pulled back. And the displacement of the positional relationship between the building equipment drain pipe and the drain basin can be reliably absorbed in all directions.

Further, in the drainage basin according to the second aspect of the present invention, a plurality of ribs are provided on the outer peripheral portion of the elastic cylindrical body, and the tips of these ribs are in close contact with the inner peripheral surface of the receiving port. As a result, it is possible to obtain an effect that high waterproofness can be ensured between the inner peripheral surface of the receiving port and the elastic cylindrical body without hindering the compression deformation of the elastic cylindrical body in the radial direction.

[Brief description of the drawings]

FIG. 1 is a diagram showing a part of a drainage path using a drainage basin according to the first embodiment.

FIG. 2 is a vertical sectional view showing a drainage basin according to the first embodiment.

FIG. 3 is an enlarged view of a main part III of FIG. 2;

FIG. 4 is a sectional view showing a drainage basin according to the second embodiment.

FIG. 5 is a sectional view showing a drainage basin according to the third embodiment.

FIG. 6 is a sectional view showing a drainage basin according to a fourth embodiment.

FIG. 7 is a sectional view showing a drainage basin according to a fifth embodiment.

FIG. 8 is a diagram showing a part of a drainage path employing a conventional drainage basin.

[Explanation of symbols]

 2 Building equipment drain pipe 3 Outdoor drain pipe 4 Drain basin 411, 411a, 411b, 411c Receptacle 7 Elastic cap 72 Insertion hole 8, 8a, 8b, 8c Elastic tubular body

Claims (2)

[Claims] 1. A drainage basin in which a receptacle into which an outdoor drainage pipe is inserted is provided on a side wall, wherein the receptacle has an inner diameter at both ends in a longitudinal direction which is at least 1.4 times an outer diameter of the outdoor drainage pipe, and a gap between the two ends. It is formed so as to be larger in diameter than both ends, and is formed in a cylindrical shape along the inner peripheral surface of the receiving port inside the receiving port, and can hold the outdoor drain pipe at the center of the receiving port. An elastic tubular body having elasticity is interposed, and the opening end of the receptacle has an insertion hole for inserting the outdoor drainage pipe, and is elastically deformable following the movement of the outdoor drainage pipe. A drainage basin characterized by being sealed by an elastic cap. 2. The drainage basin according to claim 1, wherein a plurality of ribs are provided around an outer peripheral portion of the elastic tubular body, and tips of the ribs are in close contact with an inner peripheral surface of the receptacle.