JPH11131582A - Connection device of drain pipe and drain pit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily connect a drain pipe and a drain pit when the positions of the terminal end of the drain pipe and the drain inflow opening of the drain pit are predetermined. SOLUTION: An connection opening 24 at one end side of a joint bend 20 is connected to the drain inflow opening 12 of a drain pit 10. And a height- adjusting pipe 40 is inserted in a rising pipe 26 communicating with the connection opening 24. The connection opening 61 at one end side of a join bend 60 is connected to the terminal end 71 of the drain pipe 70 and the joint opening 41 at one end side of the height-adjusting pipe 40 is connected through some trials to the connection opening 62 of the other end side of the joint bend 60. A fastening nut 50 is fastened to fix the joint bend 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for connecting a drain pipe to a drain basin.

[0002]

2. Description of the Related Art In the case of draining water discharged from a plumbing place such as a bathroom or washroom in a house to a drainage pipe in a residential area, FIG.
The elbow 2, the short pipe 3, the elbow 4, and the short pipe 5 are connected in this order to the drain pipe 1 that emerges from the location around the water, and the drain pipe 7 of the drainage tub 6 is connected to the short pipe 5 at the end. To connect. If such pipes are provided, the drainage discharged from the location around the water flows into the drainage basin 6 through the conduit formed by the elbows 2 and 4 and the short pipes 3 and 5, and the drainage basin 6 The water is drained through the connected residential land drain pipe 8. In FIG. 4, arrows a and b indicate the flow direction of the drainage in the drainage pipe 7 in the residential land, and arrow c indicates the flow direction of the drainage from the location around the water.

In the piping system P between the drain pipe 1 and the drain inlet 7 of the drain basin 8 described in FIG. 4, the drain pipe 1, elbow 2, short pipe 3, elbow 4, short pipe 5, drain basin 6 The joint using an adhesive is performed at the mutual connection point of the drainage inlets 7 of the drainage pipes, and the drainage of the drainage pipe 1, the elbow 2, the short pipe 3, the elbow 4, the short pipe 5, and the drainage basin 6 is performed in the above procedure. It is easy to connect the inflow ports 7 in order.

[0004]

The length adjustment of the piping system P in the height direction H described with reference to FIG. 4 needs to be performed by accurately determining the length of the short pipe 3. Further, when connecting the elbow 4 to the short pipe 3, it is necessary that the direction of the elbow 4 is accurately aligned with the drainage inlet 7 of the drainage basin 6.

However, before connecting the elbow 4, the short pipe 5, and the drainage inlet 7 to the short pipe 3, the length of the short pipe 3 is accurately determined and the length of the piping system P in the height direction H is determined. Making the adjustments is very difficult and requires a high degree of skill. In addition, since bonding using an adhesive is performed in the piping system P, the elbow 4 is inserted into the short pipe 3 and the direction of the elbow 4 is set to the drainage inlet 7 of the drainage basin 6 while the adhesive is not cured. On the other hand, there is a great deal of difficulty in the task of accurately adjusting the alignment, and a high degree of skill is required. The above is a problem that arises when the drainage basin 6 is newly established.

On the other hand, when the house is renovated, the existing drainage basin is used as the drainage basin 6 without changing the installation location, and the newly installed drainage pipe 1 is connected to the drainage inlet of the existing drainage basin. A situation arises that must be done. In the piping system P shown in FIG. 4, the elbow 2 and the short pipe 3, the short pipe 3 and the elbow 4, the elbow 4 and the short pipe 5, and the short pipe 5
At the connection point between the drainage inlet 7 and the drainage inlet 7, the insertion hole on the other side is inserted into the receptacle on one side and joined with an adhesive, so that the drainage pipe 1, elbow 2, short pipe 3, Elbow 4
Although the above four pipe elements can be connected in this order, there is a problem that the last short pipe 5 cannot be connected to the elbow 4 and the drainage inlet 7.

The present invention has been made in view of the above-mentioned problems, and can be employed when a drainage basin is newly constructed. Of course, the existing drainage basin can be utilized without changing the installation location to use the existing drainage basin. An object of the present invention is to provide a connection device between a drainage pipe and a drainage basin, which can be employed even when a piping system for connecting a drainage pipe to a drainage inlet of a basin is constructed.

[0008]

According to the present invention, there is provided a connecting device for connecting a drainage pipe to a drainage basin according to the present invention. A first seal ring is held on the inner peripheral side of the pipe section which is communicated with the side connection port and rises upward, and a male screw section is provided on the outer peripheral side of the pipe section. A bent connection pipe having a diameter-reducible cylindrical portion provided with a dividing groove formed at one or more locations in a circumferential direction; a lateral one-side connection port connected to a lateral end of the drain pipe; A curved joint having a downwardly-facing other end side connection port in which a second seal ring is held on an inner peripheral side; and an outer periphery fitted to the second end side of the second seal ring by being fitted to the other end side connection port of the bent joint A bent connection having an upwardly-facing one-side connection port whose surface is slidably adhered A height adjusting tube slidably inserted into the cylindrical portion and the tube portion and having an outer peripheral surface in close contact with the first seal ring; and a bendable connecting tube which can be externally fitted to the height adjusting tube. A female threaded part screwed into the male threaded part, and a pressing part for holding the height adjusting tube in the cylindrical part by tightening and reducing the diameter of the cylindrical part when the female threaded part is screwed into the male threaded part. And a fastening nut. Here, the state in which the second seal ring is in close contact with the outer peripheral surface of the connection port on one end side of the height adjustment pipe is “slidable” when the second seal ring is connected to one end side of the height adjustment pipe. This means that the connection port on one end side of the height adjusting tube is slidable in the axial direction and the circumferential direction with respect to the second seal ring while being in close contact with the outer peripheral surface of the port,
Further, "the height adjusting pipe is slidably inserted into the cylindrical portion and the pipe portion of the bent connection pipe" means that the height adjusting pipe is axially and circumferentially inserted into the cylindrical portion and the pipe portion of the bent connection pipe. This means that it is slidably inserted in the direction.

In the present invention, when connecting a horizontal drainage inlet of a drainage basin (including both a new drainage basin and an existing drainage basin) whose installation location is fixed and a horizontal end of a drainage pipe, For example, the following procedure can be suitably adopted. That is, in the first stage, connecting the one end side connection port of the bent connection pipe to the drainage inlet of the drainage basin, and inserting the height adjusting pipe into the cylindrical portion and the pipe portion of the bent connection pipe. And connecting the one end side connection port of the bent joint to the terminal end of the drain pipe, and connecting the upward one connection port of the height adjustment pipe to the other end of the bent joint downward. Keep it facing the connection port. In the second step, while the height-adjusting pipe is being pulled out of the pipe section, its upward one-side connecting port is fitted to the downward-facing other-side connecting port of the bent joint to connect them. With this configuration, the lateral drainage inlet of the drainage basin and the lateral end of the drainage pipe are connected by the bent connection pipe, the height adjustment pipe, and the bent joint.

Here, in the above-mentioned first stage, the height adjusting pipe is inserted into the cylindrical portion and the pipe portion of the bent connection pipe to a position lower than the final height position. At this stage, the height adjusting pipe is pulled out from the pipe part, and one end side connection port thereof is fitted and connected to the other end side connection port of the bent joint. This is a so-called "exchanging action", by which the length of the piping system between the drainage inlet formed by the connecting device of the present invention and the end of the drainage pipe is adjusted in the height direction. Is performed.

[0011] The watertightness of the fitting portion between the pipe portion of the bent connection pipe and the height adjustment pipe connected as described above is maintained by the first seal ring, and the downwardly-facing other end connection port of the bent joint is provided. The watertightness of the fitting point between the upper end of the height adjusting pipe and the connection port of the height adjusting pipe is maintained by the second seal ring.

In the connecting device according to the present invention, the direction of the one-end connection port of the bent joint connected to the one-end connection port of the height adjustment pipe can be freely determined around the axis of the height adjustment pipe. it can. Therefore, even if the direction of the end of the drainage pipe is different from the direction of the drainage inlet of the drainage basin, such a difference in the direction can be easily absorbed.

Further, according to the connecting device of the present invention, when the female screw portion of the tightening nut which has been externally fitted to the height adjusting pipe is bent and screwed into the male screw portion of the connecting pipe and tightened, the pressing portion of the tightening nut is tightened. As a result, the tube portion of the bent connection tube is tightened to reduce the diameter, and the tube portion holds the height adjusting tube. For this reason, it is possible to fix the height adjusting tube at the height position by tightening the tightening nut after connecting the height adjusting tube and the bent joint by the above-mentioned “exchanging action”.

In the connecting device according to the present invention, the bent joint and the height adjusting pipe are made of synthetic resin, and the inner periphery of the other end side connection port of the bent joint and the upwardly directed height adjusting pipe are directed upward. It is preferable that a ring-shaped ridge is provided on one side of the outer periphery of the connection port on one end side, and a ridge that is rotatably fitted to the ridge is provided on the other side.

With such a configuration, the second
When the one end side connection port of the height adjusting pipe is fitted to the other end side connection port of the bent joint at the stage, the above-mentioned convex and concave ridges are fitted and the height adjusting pipe does not move up and down on the bent joint. Connected as follows. Therefore, not only can the work of tightening the tightening nut and fixing the height adjustment pipe at the height position be easily performed, but also the appropriate length in the height direction of the piping system naturally increases. It will be determined exactly.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a cutaway front view of a main part showing a use state of a connecting device for a drainage pipe and a drainage basin according to the present invention.
3 is a front view of a main part of the bent connection pipe 3, and FIG. 3 is a view taken in the direction of the arrow III in FIG.

In FIG. 1, a drainage basin 10 is formed of a synthetic resin such as polyvinyl chloride resin, and has a horizontal orientation leading to a drainage flow path (not shown) formed at the inner bottom of a cylindrical body 11. Drainage inlet 12 protrudes to the side of the body 11. Although not shown, a drain outlet connected to the drain passage also protrudes to the side of the body 11. Further, a pipe member 13 made of synthetic resin is raised from the drainage basin 10 and an upper end thereof is opened on the ground surface, and a lid (not shown) is detachably attached to the opening. This pipe member 13
Upper opening serves as a cleaning port.

Reference numeral 20 denotes a bent connection pipe. In this embodiment, the bent connection pipe 20 is formed by a straight pipe 21 and a right-angle elbow 22 connected to a lower end of the straight pipe 21. The connecting portion 23 between the straight pipe 21 and the right-angle elbow 22 is joined with an adhesive. The straight pipe 21 and the right-angle elbow 22 are both formed of a synthetic resin such as a polyvinyl chloride resin. The bent connection pipe 20 has a laterally-side one-side connection port 24. Then, the drainage inlet 12 of the drainage basin 10 and the one end side connection port 24 are connected and communicate with each other via a straight short pipe 25. A fitting part 25a between the short pipe 25 and the drainage inlet 12 and a fitting part 25b between the short pipe 25 and the one end side connection port 24 are joined with an adhesive. In the bent connection pipe 20, the straight pipe 21
The pipe portion 26 formed by the above-mentioned one end side connection port 2
A first sealing ring made of an O-ring is formed in a groove 28 formed in a tubular shape on the inner peripheral side of the tube portion 26 and communicates through a bent portion 27 bent at a right angle to the tube 4. 29 are stored and held. In addition, pipe section 26
A male thread portion 31 is provided on the outer peripheral side of the tube. The male thread portion 31 is connected to a cylindrical portion 32 formed by the upper end of the straight pipe 21. As shown in FIGS. 2 and 3,
The cylindrical portion 32 has divided grooves 33 at four locations in the circumferential direction, and the four pieces 34 divided by the divided grooves 33 fall inward against the elasticity peculiar to the synthetic resin. Thus, the diameter of the cylindrical portion 32 can be reduced. Although the cylindrical portion 32 in the illustrated example has four divided grooves 33,
The number of the dividing grooves 33 may be one or two or more.

A straight height adjusting pipe 40 of a predetermined length is slidably inserted in a vertical direction into the tubular section 32 and the pipe section 26 of the bent connecting pipe 20. The first seal ring 29 is in close contact with the surface. Therefore, the first seal ring 29 maintains the watertightness of the fitting portion between the bent connection pipe 20 and the height adjustment pipe 40. The height adjusting tube 40 is formed of a synthetic resin such as a polyvinyl chloride resin.

A tightening nut 50 is externally fitted to the height adjusting tube 40. This tightening nut 50 is
1 and a pressing portion 52 formed by an upwardly tapered surface of the inner portion of the female screw portion 51. When the female screw portion 51 is screwed into the male screw portion 31 of the tube portion 26 and tightened, the pressing portion 52 Pushes the tube portion 32 of the tube portion 26 inward to reduce the diameter. Therefore, the cylindrical portion 32 reduced in diameter by the tightening of the tightening nut 50 is connected to the height adjusting tube 4.
0 is held at its height so as not to move up and down.

At the upper end of the height adjusting tube 40, an upward one-side connection port 41 is formed.
The lower end side connection opening 62 of the elbow-shaped bending joint 60 is externally fitted to and connected to 1. This connection point 63
Then, a rubber second seal ring 65 such as an O-ring housed and held in an annular groove 64 of the other end side connection port 62 on the bending joint 60 side is connected to the one end side connection port on the height adjustment pipe 40 side. In addition to maintaining the water tightness of the fitting portion 63 in close contact with the outer peripheral surface of the height adjustment tube 41, the one end side connection port 41 of the height adjustment pipe 40 is provided.
Is fitted to an annular recess 66 provided on the inner periphery of the other end side connection port 62 of the bending joint 60, and the height adjusting pipe 40 and the bending joint 60 are separated from each other. And rotation of the bending joint 60 with respect to the height adjusting tube 40 is allowed. The end 71 of the drainage pipe 70 laid horizontally is connected to the one end side connection port 61 of the bent joint 60.
Is connected. One end connection port 61 of the bent joint 60
The fitting portion between the and the end portion 71 of the drain pipe 70 is joined by an adhesive. The bent joint 60 is formed of a synthetic resin such as a polyvinyl chloride resin.

Next, an example of a procedure for connecting the drainage inlet 12 of the drainage basin 10 and the terminal end 61 of the drainage pipe 70 will be described. In this description, the drainage basin 10 may be a newly installed one or an existing one.

In the first stage, the drainage inlet 12 of the drainage basin 10 is bent into one end of the connection pipe 20 at one side of the horizontal side.
4 is connected by using the short pipe 25, the height adjusting pipe 40 is inserted into the cylindrical part 32 and the pipe part 26 of the bent connecting pipe 20, and the lateral end part 71 of the drain pipe 70 is connected. Connecting the one end side connection port 61 of the bent joint 60 to the upper end of the bent joint 60 and the other end side connection port 62 of the bent joint 60 downward. Oppose at concentric positions. In the next second step, while pulling out the height adjusting tube 40 from the tube portion 26, the upward one end side connection port portion 41 is fitted to the downward other end side connection port portion 62 of the bent joint 60 to connect them. I do. In this way, the drainage inlet 12 of the drainage basin 10 and the drainage pipe 70
Are connected by the bent connecting pipe 20, the height adjusting pipe 40, and the bent joint 60. In the third stage, the female screw portion 51 of the tightening nut 50 which has been externally fitted to the height adjusting tube 40 is bent and screwed into the male screw portion 31 of the connecting tube 20 to be tightened. This way,
The cylindrical portion 32 of the bent connection tube 20 is tightened by the pressing portion 52 of the tightening nut 50 to reduce the diameter, and the cylindrical portion 32 holds the height adjusting tube 40. Thereby, the height adjusting pipe 40 is fixed to the bent joint 20.

Here, in the above-mentioned first stage, the height adjusting pipe 40 is positioned at the lower end of the tube section 32 and the pipe section 26 of the bent connection pipe 20 than the final height position (the position in FIG. 1). In the above-described second step, the height adjusting pipe 40 is pulled out of the pipe section 26 and its one end side connection port 41 is
Is fitted and connected to the other end side connection port 62 of the bent joint 60. By performing such “exchange”, the length of the piping system P between the drainage inlet 12 and the end portion 71 of the drainage pipe 70 in the height direction is adjusted.

The bent connection pipe 2 connected as described above
The watertightness of the fitting portion between the tube section 26 and the height adjustment pipe 40 is maintained by the first seal ring 29, and the other end side connection port 62 of the bent joint 60 facing downward and the height adjustment pipe 40 upward. The watertightness of the fitting portion with the one end side connection port portion 41 is maintained by the second seal ring 65.

In this embodiment, the direction of the one end connection port 62 of the bent joint 60 connected to the one end connection port 41 of the height adjustment pipe 40 is freely determined around the axis of the height adjustment pipe 40. It is possible. Therefore, even if the direction of the end portion 71 of the drainage pipe 70 and the direction of the drainage inlet 12 of the drainage basin 10 are different, such a difference in the direction can be easily absorbed.

In the above-mentioned second stage, when the connection port 41 on one end side of the height adjusting pipe 40 is fitted to the connection port section 62 on the other end of the bent joint 60, the ridges 42 and the concave ridges 66 are formed at that time. The height adjusting tube 40 is connected to the bending joint 60 so as not to move up and down. Therefore, not only can the work of tightening the tightening nut 50 to fix the height adjusting pipe 40 at the height position be easily performed, but also the appropriate length of the piping system P in the height direction can be easily achieved. Is determined naturally and accurately.

In this embodiment, the connection port 24 on the one end side of the bent connection pipe 20 is connected to the drainage inlet 12 of the drainage basin 10 via the short pipe 25.
5 may be omitted, and the connection port 24 on one end side of the bent connection pipe 20 may be formed as an insertion port and directly connected to the drainage inlet 12 of the drainage basin 10. Further, the bent connection pipe 30 may be formed of a synthetic resin integrally molded body. Furthermore, in this embodiment, although the convex streak 42 is provided on the height adjusting tube 40 side and the concave streak 66 is provided on the bending joint 60 side, a concave streak is provided on the height adjusting tube 40 side, and the bent joint 60 side is provided. May be provided with a ridge.

[0029]

According to the apparatus for connecting a drainage pipe and a drainage basin of the present invention, even in a narrow space where the end of the drainage pipe and the drainage inlet of the drainage basin are close in the horizontal direction. Utilizing the "exchange action" of the height adjustment pipe and the relative rotation function of the bent joint and the height adjustment pipe, the end of the drain pipe and the drainage inlet of the drainage basin can be easily connected. become able to.

[Brief description of the drawings]

FIG. 1 is a partially broken front view showing a main part of a use state of a connection device between a drain pipe and a drain basin according to the present invention.

FIG. 2 is a front view of a main part of the bent connection pipe.

FIG. 3 is a view taken in the direction of the arrow III in FIG. 2;

FIG. 4 is a schematic perspective view for explaining a connection procedure when a drainage basin is newly installed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Drainage basin 12 Drainage inflow port 20 Bend connection pipe 24 One end connection port part of bend connection pipe 26 Pipe part 29 1st seal ring 31 Male screw part 32 Cylindrical part 33 Dividing groove 41 One end side connection port part of height control pipe 42 Convex ridge 50 Tightening nut 51 Female thread part 52 Pressing part 60 Bend joint 61 One-end connection port of bend joint 62 Other-end connection port of bend joint 65 Second seal ring 66 Concave strip 70 Drain pipe 71 Drain pipe end

Claims (2)

[Claims] 1. An inner peripheral side of a pipe part which has a lateral one-side connection port communicating with a lateral drainage inlet of a drainage basin, and which is connected to the one-side connection port and rises upward. First
A seal ring is held, a male screw portion is provided on the outer peripheral side of the tube portion, and a diameter-reducible cylinder having a dividing groove formed at one or more positions in the circumferential direction connected to the male screw portion. A bent connection pipe having a portion, a horizontal one end connection port connected to the horizontal end of the drain pipe, and a downward other end connection port holding a second seal ring on the inner peripheral side. A bent joint having an upwardly-facing one-side connection port fitted into the other-side connection port of the bent joint and having an outer peripheral surface slidably in close contact with the second seal ring; The outer peripheral surface is slidably inserted into the tubular portion and the tubular portion of the pipe so that the outer peripheral surface is the first portion.
A height adjusting tube which is in close contact with the seal ring, a female screw portion which can be externally fitted to the height adjusting tube and which is screwed into the male screw portion of the bent connection tube, and the female screw portion which is screwed into the male screw portion. A fastening nut having a pressing portion for holding the height adjusting tube in the cylindrical portion by tightening and reducing the diameter of the cylindrical portion; and a connection device for connecting the drainage pipe and the drainage basin. 2. The bent joint and the height adjusting pipe are made of synthetic resin, and the inner circumference of the other end side connection port of the bent joint and the upward one end side connection port of the height adjustment pipe are provided. 2. The connection device between a drain pipe and a drainage basin according to claim 1, wherein a ring-shaped ridge is provided on one side with respect to the outer periphery of the body, and a concave ridge fitted on the ridge is provided on the other side.