JPH1136436A - Catch basin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a catch basin such that even if a drain pipe inserted into an inlet side connection is exerted, along the inserting direction, with an external force not smaller than a predetermined level resulting from an earthquake, damage to the catch basin or drain pipe can be prevented. SOLUTION: A catch basin 1 is provided at its top with a faucet 11 for a cleanout 2 and at its bottom with an invert part 15, and an inlet side faucet 13 and an outlet side spigot 14 are provided in connection with both ends of the invert part 15. In that case, the inlet side faucet 13 is a rubber ring faucet, a stopper piece 17 is provided to project from the top of the deep inner surface of the rubber ring faucet 13, and when an external force not smaller than a predetermined level works in the direction to insert a drain pipe 3, 0f the stopper piece 17 is broken by the end of the drain pipe 3 to permit passage of the end of the drain pipe 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake-resistant drainage basin which is used in a drainage pipe or a sewage pipe.

[0002]

2. Description of the Related Art As a conventional drainage basin, for example,
In Japanese Patent No. -20294, an inlet port is provided at an upper portion, an invert portion is provided at a lower portion, and an inlet port and an outlet port to which a drain pipe is connected are formed at an end of the invert portion. The drainage basin is described. In this case, the ends of both the upstream and downstream drain pipes are bonded and fixed to the inflow side receiving port and the outflow side receiving port via an adhesive.

In this case, since both ends of the drainage pipes are adhered and fixed to the drainage basin, for example, an earthquake occurs and an external force in the insertion direction or an external force in a direction opposite to the insertion direction acts on the drainage pipes. In this case, there is a problem that the drainage basin or the drainage pipe is damaged or broken, and the lifeline of the drainage (sewage) pipeline is cut off.

[0004] In order to solve such a problem, a rubber ring type connection technique without using an adhesive, which is widely known as a connection technique for hard vinyl chloride resin pipes, is being applied also in the field of drainage basins. . Specifically, the inflow-side connection part of the drainage basin is a rubber ring receiving port instead of the conventional TS receiving port.

[0005]

However, in the above-mentioned conventional drainage basin in which the inflow side connection portion is a rubber ring receiving port, the insertion length of the drainage pipe inserted into the receiving port (usually, the insertion allowance). ) Is at most as large as or smaller than the diameter of the receiving port, so there is a problem that the end of the drain pipe may fall out of the receiving port due to an external force such as an earthquake. Was.

[0006] Further, in the case of piping, depending on the contractor, there may be a case where the drainage pipe is inserted into the receiving port to the maximum extent and connected. In this case, when an external force in the insertion direction acts on the drain pipe, the drain pipe cannot move in the insertion direction,
Therefore, there is a problem that the drainage basin or the drainage pipe is damaged or destroyed as in the conventional case.

An object of the present invention is to dispose a drain pipe, which is disposed in the middle of a drain pipe and then inserted and connected to an inflow-side connecting portion, in a direction of insertion to a predetermined level or more due to an earthquake or the like. It is an object of the present invention to provide a drainage basin in which the tip of a drainage basin or a drainage pipe is not damaged or destroyed even when an external force acts.

[0008]

According to the first aspect of the present invention, a cylindrical connection portion with a cleaning port pipe is provided at an upper portion, and an invert portion is provided at a lower portion, and cylindrical portions are provided at both ends of the invert portion. In the drainage basin in which the inflow-side connection portion and the outflow-side connection portion are connected to each other, the inflow-side connection portion serves as a rubber ring receiving port, and the inner surface of the upper half portion on the back side of the rubber ring receiving port. In the part, a stopper piece is provided to which the distal end face of the drain pipe inserted and connected into the receptacle is abutted and locked, and when this stopper piece receives an external force of a predetermined level or more in the insertion direction of the drain pipe, It is formed so as to allow passage of the end of the drain pipe.

According to a second aspect of the present invention, in the drainage basin of the first aspect, a stopper piece protrudes from an inner surface top of the rubber ring receiving port.

According to a third aspect of the present invention, in the drainage basin of the first or second aspect, when an external force of a predetermined level or more acts in the insertion direction of the drainage pipe, the stopper piece is broken at the tip of the drainage pipe. , The passage of the end of the drainpipe can be tolerated.

According to a fourth aspect of the present invention, in the drainage basin of the first to third aspects, a notch is provided in a part of the stopper piece.

In the present invention, the stopper piece may be formed at the time of forming the drainage basin, or after forming the drainage basin, another member serving as the stopper piece may be adhered and fixed at a predetermined position. . The shape and dimensions of the stopper piece may be determined as appropriate.

(Operation) In the drainage basin of the present invention according to claims 1 to 4, the inflow side connection part is a rubber ring receiving port,
A part of the inner surface of the upper half part on the back side of the rubber ring socket is provided with a stopper piece that is in contact with the distal end face of the drain pipe inserted and connected into the socket, and this stopper piece is inserted into the drain pipe. When an external force of a predetermined level or more acts in the direction, it is formed so as to allow passage of the end of the drain pipe, so that, for example, even if an earthquake occurs and an external force in the insertion direction acts on the drain pipe, The drainpipe moves inside the basin, and the applied external force is absorbed and absorbed. Therefore, damage or destruction of the drainage basin or drainage pipe can be prevented.

Further, since the stopper piece protrudes from a part of the inner surface of the upper half part on the back side of the rubber ring socket,
Even if an external force acts on the drainage pipe in a direction opposite to the insertion direction and a considerable gap is formed between the tip surface of the drainage pipe and the stopper piece, the sweeping performance of the wastewater is not impaired.

In the drainage basin according to the second aspect of the present invention, since the stopper piece projects from the top of the inner surface of the rubber ring receiving port, the sweeping performance of the sewage is completely maintained.

In the drainage basin according to the third aspect of the present invention, when an external force of a predetermined level or more acts in the insertion direction of the drainage pipe, the stopper piece is broken at the tip of the drainage pipe, and the end of the drainage pipe is damaged. Since the passage is permissible, the external force acting on the drain pipe can be reduced and absorbed.

In the drainage basin according to the present invention, since the notch is provided in a part of the stopper piece, the stopper piece is pressed by the pressing force of the tip surface of the drainage pipe.
Accurately and smoothly breaks and comes off, and can immediately absorb and absorb the external force acting on the drain pipe.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a first embodiment of a drainage basin of the present invention, FIG. 2 is an enlarged sectional view showing a main part of FIG. 1 together with a use state, and FIG. 3 is an enlarged main part of a XX section of FIG. FIG.

In FIG. 1, reference numeral 1 denotes a straight drainage basin made of a hard vinyl chloride resin, and a cylindrical enlarged-diameter receiving port 11 is provided at an upper portion of a basin body 10. An annular bulge 11a is formed at the opening end of the receiving port 11, and a sealing rubber ring 12 made of synthetic rubber is mounted in an annular groove 11b inside the annular bulge 11a. The inner surface of the receiving port 11 is a tapered surface whose diameter increases toward the inner side. The lower end of the cylindrical cleaning port tube 2 is inserted and connected to the receiving port 11,
A cleaning port (not shown) provided with a lid is bonded and fixed to the upper end opening of the cleaning port tube 2.

A cylindrical receiving port 13 and a cylindrical port 14 are provided at both lower end portions of the box body 10. Socket 13
Is the inflow side, and the outlet 14 is the outflow side. The diameter of the spigot 14 is larger than the diameter of the receiving port 13. The receiving port 13 and the port 14 are connected via an inverting section 15 having a step. An annular bulge 13a is formed at the opening end of the receiving port 13, and a sealing rubber ring 16 made of synthetic rubber is mounted in the annular groove 13b inside the annular bulge 13a. As shown in the drawing, the inner diameter of the receiving port 13 is the same over the entire length except for the annular bulging portion 13a.

One stopper piece 17 is protrudingly provided at the top of the inner surface on the back side of the receiving port 13. This stopper piece 17
The projecting position is the sealing rubber ring 16 in FIG.
The length L (ie, the effective insertion length of the drain pipe 3) L between the stopper piece 17 and the front surface on the opening side of the stopper piece 17 is, for example, due to an earthquake or the like, and the drain pipe 3 inserted and connected into the receptacle 13 is pulled out. It is sufficient that the end length of the drain pipe 3 can be maintained at a permissible length that prevents the end of the drain pipe 3 from falling out of the inside of the receiving port 13. The effective insertion length L is desirably 45 to 50 mm when the drain pipe 3 has a nominal diameter of 100 to 125 mm, and 55 to 70 mm when the drain pipe 3 has a nominal diameter of 150 to 200 mm.

2 and 3, the projecting height of the stopper piece 17 is slightly larger than the wall thickness of the drain pipe 3 to be connected. The shape and dimensions of the stopper piece 17 are such that when an external force of a predetermined level or more acts in the insertion direction of the drain pipe, the stopper piece 17 is damaged and the drain pipe 3 is damaged.
Is formed so as to allow the passage of the end portion. A socket 31 of the drain pipe 3 on the upstream side, which will be described later, is inserted into the receiving port 13 and connected. At this time, the insertion position can be determined by the distal end surface of the drain pipe 3 being brought into contact with the stopper piece 17 and locked. On the other hand, the enlarged outlet 41 of the drain pipe 4 on the downstream side is extrapolated and connected to the outlet 14. Reference numeral 18 denotes a leg, which is integrally provided on the outer surface of the bottom of the invert portion 15 of the main body 10.

Next, the use state of the drainage basin 1 of the above embodiment will be described. Drainage basin 1 is installed on a sufficiently compacted foundation. After applying a lubricant to the inner surface of the sealing rubber ring mounted in the receiving port 41 of the drain pipe 4, the outlet 14 of the drain basin 1 and the drain pipe 4 are connected by using an insertion machine. Similarly, the inlet 13 on the inflow side of the drainage basin 1 and the drainage pipe 3 on the upstream side
The connection work of the drainage pipe is completed by sequentially performing the connection work.
Next, the lower end of the cleaning port pipe 2 is connected to the receiving port 11, and a cleaning port with a lid attached to the upper end opening of the cleaning port pipe 2 is adhered and fixed. Then, the earth and sand are backfilled, and the installation work of the drainage basin 1 is completed.

When an external force in the insertion direction acts on the drain pipe 3 due to, for example, the occurrence of an earthquake, the distal end surface of the drain pipe 3 presses the stopper piece 17, and the stopper piece 17 is broken from its base and comes off. As a result, the drain pipe 3 moves to the inside of the drain basin 1, and the applied external force is relaxed and absorbed.
No damage or destruction of the drainage basin or drainage pipe.

On the other hand, even if an external force in the direction opposite to the insertion direction acts on the drain pipe 3, the effective insertion length L of the receptacle 13 is set to a sufficient length. The three ends do not come off. In addition, since the stopper piece 17 exists at the top of the inner surface on the inner side of the receiving port 13,
The scavenging performance of the sewage is not affected at all.

In the above embodiment, one stopper piece 17 is protruded from the top of the inner surface on the inner side of the receiving port 13.
As shown in the figure, a part of the inner surface of the upper half of the
A plurality (three in the illustrated case) of stopper pieces 17A may be protruded along the circumferential direction. In the case where a plurality of stopper pieces 17A are protruded in this way, as shown in FIG. 5, it is desirable to form notches 17a in the front and rear base sides of the stopper pieces 17A along the circumferential direction. This notch 17
Due to the presence of a, each stopper piece 17A is accurately and smoothly broken and detached by the pressing force of the distal end face of the drain pipe 3.

In the above embodiment, when an external force due to an earthquake or the like acts on the insertion direction of the drain pipe 3, the stopper piece 17 (1) is pressed by the pressing force of the distal end face of the drain pipe 3.
Although 7A) is structured to be broken and detached, it may be structured so as not to be broken and not detached. Specifically, as shown in FIG. 6, a plurality (five in the illustrated case) of hemispherical stopper pieces 17 </ b> B are provided along a circumferential direction on a part of the inner surface of the upper half part on the back side of the receptacle 13. May be provided. It is desirable that the protrusion height of the stopper piece 17 </ b> B be slightly higher than the gap between the inner surface of the receiving port 13 and the outer surface of the drain pipe 3. Further, it is preferable to chamfer the outer surface of the distal end portion of the drain pipe 3.

In this case, when an earthquake occurs and an external force acts on the drain pipe 3 in the insertion direction, the distal end surface of the drain pipe 3 moves inside the drain basin 1 while pressing the spherical surface of the stopper piece 17B. The applied external force is alleviated and absorbed, and the drainage basin or drainage pipe is not damaged or broken.

In the above embodiment, the socket 13 and the outlet 14
Has a circular cross section, but may have an elliptical shape, an oval shape, an oval shape, or the like.

In the above embodiment, a step is provided in the invert section 15, but this step may not be provided. The shape of the drainage basin is not limited to the straight type,
A 5-degree merging type, a 90-degree merging type, a three-way Y merging type, a three-way T merging type, or the like may be used.

[0031]

According to the drainage basin of the present invention, the inflow side connection portion is a rubber ring receiving port, and a part of the inner surface of the rubber ring receiving port is provided inside the receiving port. A stopper piece projecting from the end face of the drain pipe to be inserted and connected is protruded, and this stopper piece can allow the end of the drain pipe to pass when an external force of a predetermined level or more acts in the insertion direction of the drain pipe. Even if, for example, an earthquake occurs and an external force acts on the drainpipe in the insertion direction, the drainpipe moves inside the drainage basin and the applied external force is absorbed and absorbed. And drainage pipes can be prevented from being damaged or destroyed.

Also, since the stopper piece protrudes from a part of the inner surface of the upper half part on the back side of the rubber ring socket,
Even if an external force acts on the drain pipe in a direction opposite to the insertion direction and a gap is formed between the distal end surface of the drain pipe and the stopper piece, the scavenging performance of the wastewater is not impaired.

In the drainage basin according to the second aspect of the present invention, since the stopper piece projects from the top of the inner surface of the rubber ring receiving port, the sweeping performance of the wastewater is completely maintained.

In the drainage basin of the present invention, when an external force of a predetermined level or more acts in the insertion direction of the drainage pipe, the stopper piece is broken at the tip of the drainage pipe, and the end of the drainage pipe is damaged. Since the passage is permissible, the external force acting on the drain pipe can be reduced and absorbed.

In the drainage basin according to the present invention, since the notch is provided in a part of the stopper piece, the stopper piece is pressed by the pressing force of the tip surface of the drainage pipe.
Accurately and smoothly breaks and comes off, and can immediately absorb and absorb the external force acting on the drain pipe.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of a drainage basin of the present invention.

FIG. 2 is an enlarged sectional view showing a main part of FIG. 1 together with a state of use.

FIG. 3 is an enlarged view of a main part of a section taken along line XX of FIG. 2;

FIG. 4 is an enlarged view of a main part showing a modification of FIG. 3;

FIG. 5 is an enlarged view of a main part in a YY cross section of FIG. 4;

FIG. 6 is an enlarged view of a main part showing another modification of FIG. 3;

[Explanation of symbols]

 Reference Signs List 1 drainage basin 10 basin body 11 receptacle 12, 16 rubber ring for sealing 13 rubber ring receptacle (inflow side connection part) 14 spout (outflow side connection part) 15 invert part 17, 17A, 17B stopper piece 17a notch part 2 Cleaning pipe 3, 4 Drain pipe

Claims (4)

[Claims] 1. A cylindrical connection portion with a cleaning port pipe is provided at an upper portion, and an invert portion is provided at a lower portion. A cylindrical inflow-side connection portion and an outflow-side connection portion are connected to both ends of the invert portion. In the drainage basin provided, the inflow-side connecting portion is a rubber ring receiving port, and a drain pipe inserted into and connected to a part of the inner surface of the upper half portion on the back side of the rubber ring receiving port. A stopper piece that abuts and locks the end surface of the drain pipe is formed so that the stopper piece can allow the end of the drain pipe to pass when an external force of a predetermined level or more acts in the insertion direction of the drain pipe. Drainage basin characterized by being done. 2. The drainage basin according to claim 1, wherein a stopper piece protrudes from the top of the inner surface of the rubber ring receiving port. 3. The drainage pipe according to claim 1 or 2, wherein when an external force of a predetermined level or more acts on the drainage pipe in the insertion direction, the stopper piece is broken at the tip of the drainage pipe and can pass through the end of the drainage pipe. Drain basin. 4. The drainage basin according to claim 1, wherein a notch is provided in a part of the stopper piece.