JPH09189071A - Connecting device for drain basin with drain pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit easy adjustment of the length of a drain connection pipe to be connected with the flow-in port of a public basin in compliance with the given conditions such as the distance from the public basin buried in a public road to the boundary between the road and the applicable dwelling site, the width of a fence structure, side gutter, etc., allow the flow-in side end of the drain connection pipe connected with the public basin to suit easily to the position of the flow-out port of the drain pipe in the site, and prevent the rainwater, subsoil water, etc., from flowing into the public basin until the inspection of works is completed. SOLUTION: A drain connection pipe 1 buried as striding over a dwelling site and a public road is composed of an inner pipe 2 furnished at one end with a drain pipe connection part 4 and an outer pipe 3 which is furnished at one end with a drain basinconnection part 7 and is fitted slidably on the inner pipe 2 liquid-tightly. A flow-in side blocking piece 11 is removably fitted to the drain pipe connection part 4 of the inner pipe 2. To the drain basin connection part 7 of the outer pipe 3, a flow-out side blocking piece 12 is removably fitted from inside the flow-in port 6 of the drain basin 5.

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 drainage pipe and a drainage pipe for connecting a drainage pipe from the inside of a residential land to a drainage pipe called a public drainage pipe for sewers buried in a public road.

[0002]

2. Description of the Related Art Generally, at the end of a drainage pipe in a residential area,
A drainage basin called a public basin is installed underground, and the outlet of this public basin and the main sewer installed underground on the public road are connected via a mounting pipe so that the drainage in the residential land can flow out to the sewage main. I have to.

However, it is difficult to install a drainage basin when the space between the residential land and the building is small, and a public basin is required to be installed outside the residential land.

[0006] In addition, some local governments obligate that a public basin be buried and installed outside the residential land.

[0005] In general, when installing a public stile, a mounting pipe is branched from the main sewer pipe, an outlet of the public stile is connected to this mounting pipe, and a rising pipe is connected to a cleaning port of the public stile. The manhole frame is connected through the plug, and then the removable inlet plug is put back into the inflow port of this public basin to backfill it, and when the building is built in the residential land and the position of the drain pipe is decided, A so-called pipe stop construction method is adopted in which the pipe is dug up to the inlet and a drain pipe is connected to the inlet of the public basin.

[0006] Therefore, in order to bury a public canal on a public road, a fence structure, a gutter, etc. are installed between the residential land and the public road, and the drainage pipe in the residential land is below the fence structure, the gutter, etc. Since it has to be buried through, the pipe stop method makes it extremely difficult to connect the drainage pipe to the public basin after the building is built in the residential land.

[0007] In addition, a pipe stop construction method in which a drainage pipe is connected to the entrance of a public basin, the drainage pipe connected to the public basin from a public road to a residential area in consideration of the fence structure and gutters at the entrance of the public basin. It is conceivable that it is installed below the fence structure and gutters, and the inflow end of this drainage pipe is removably blocked with a blocking body, but even in this case, a building is built in the residential land,
When the position of the drainage pipe is determined, the drainage pipe is dug down to the inflow end of the drainage pipe, the closing body is removed, and the drainage pipe in the residential land is connected.

[0008]

According to the pipe stop construction method for connecting a drainage pipe to the inflow port of the public basin, the inflow side end of the drainage pipe connected to the inflow port of the public basin is installed in the residential land. In the method of detachably closing the inflow side end of the drainage pipe with a blocker, the length of the drainage pipe is constant, so after the fence structure, gutter, etc. have been constructed, the drainage pipe connected to the public basin The position of the inflow side end and the position of the outflow side end of the drainage pipe in the residential land often do not match, so connect the inflow side end of the drainage pipe connected to the public basin to the outflow side end of the drainage pipe in the residential land. Has a problem that it takes time.

The present invention has been made in view of the above problems, and the length of a drainage connecting pipe connected to an inlet of a public basin can be set to a width from a public basin buried in a public road to a fence structure, a gutter, or the like. A drainage basin and drainage pipe that can be easily adjusted according to the position of the drainage end of the drainage pipe in the residential land, and can be easily connected to the drainage basin of the public road via the drainage connection pipe. The connection device is provided.

[0010]

According to a first aspect of the present invention, there is provided a drainage pipe / drainage pipe connecting device which is provided with a drainage connection pipe buried between a residential land and a public road. An inner pipe having a drainage pipe connection portion formed at one end for connecting a drainage pipe on the residential land side, and a drainage pipe connection portion formed at one end connected to the inlet of the drainage pipe, and the inner pipe from the other end side of the inner pipe The outer pipe is slidably fitted to the outer periphery of the outer pipe, and the drainage pipe connecting portion of the outer pipe is eccentrically reduced in diameter so that the inner peripheral lower surface is flush with the inner peripheral lower surface of the outer pipe. An inflow side blocker is detachably fitted to a drainage pipe connection portion of an inner pipe of the connection pipe.

Before the construction of the building on the residential land, the drainage drainage pipe connecting portion formed on the outer pipe of the drainage drainage pipe is connected to the inlet of the drainage drainage pipe embedded in the public road. Also, locate the drainage pipe connection part that opens at one end of the inner pipe of the drainage connection pipe in the residential land,
The drain pipe connection is closed with a blocker and backfilled.
This drainage connection pipe can be extended in length by pulling out the inner pipe from the outer pipe, and even if there is a gutter or a fence structure at the boundary between the public road and the residential land, it can be easily dealt with. In addition, since the drainage pipe connection part of the inner pipe of the drainage connection pipe is blocked with a blocker, before using the drainage facility in the residential land, rainwater, groundwater, sediment etc. in the residential land will be drained to the public basin. It does not flow into the basin and drainage connection pipe.

When constructing a drainage pipe in a residential land and connecting the drain-side end to the drainage connecting pipe, the inner pipe of the drainage connecting pipe is replaced with the outer pipe in accordance with the position of the outflow terminal of the drainage pipe in the residential land. From the other end side of the inner pipe, remove the inflow side closing body that has closed the drain pipe connection part on one end side of this inner pipe, and open it,
The end of the drainage pipe in the residential land is connected to the drainage pipe connection of this inner pipe.

Since the drainage pipe connection portion of the outer pipe of the drainage connection pipe is eccentrically reduced in diameter so that the lower surface of the inner periphery is flush with the lower surface of the inner periphery of the outer pipe, the drainage pipe is connected to the connection portion between the outer pipe and the drainage pipe. The wastewater does not collect, and the drainage flows from the inside of the residential land into the drainage basin on the public road.

According to a second aspect of the present invention, there is provided a drainage pipe / drainage pipe connection device, wherein the drainage pipe / drainage pipe connection device according to the first aspect is the outer pipe drainage pipe connection portion. Is equipped with an outflow side closing body that is detachably fitted from the inside.

Then, after the construction of the building, a state in which the drain pipe connecting portion of the inner pipe is connected to the drain pipe in the residential land by removing the inflow side blocking body which closed the drain pipe connecting portion at one end of the inner pipe of the drain connecting pipe However, since the drainage basin connection part of the outer pipe of the drainage connection pipe is blocked by the outflow side blocking body fitted from the inside of the inlet of the drainage basin, until the public inspection of the drainage system is completed until the public inspection of the drainage system is completed. Drainage of the basin No drainage from the drainage pipe in the residential area will flow into the basin.

Further, after the official inspection of the drainage system, by removing the outflow side blocking body that has closed the drainage basin connection portion of the outer pipe from the drainage basin connection portion of the outer pipe, Drainage flows into the drainage basin and outflows to the sewer main.

According to a third aspect of the present invention, there is provided a connecting device between a drainage pipe and a drainage pipe, wherein the drainage pipe and the drainage pipe are connected to each other. The hook is formed so that the closing body can be detached from the inside of the drainage basin.

Then, the outlet side closing body can be easily removed by hooking the hook portion formed on the closing surface of the outlet side closing body with the jig inserted from the cleaning port of the drainage basin.

According to a fourth aspect of the present invention, there is provided a connecting device between a drainage pipe and a drainage pipe, wherein the drainage pipe and the drainage pipe are connected to each other at the other end of the outer pipe. An annular groove is formed on the inner circumference, and an annular seal member that is in pressure contact with the outer peripheral surface of the inner pipe is fitted into the annular groove.

An annular seal member fitted in an annular groove formed on the inner periphery of the other end of the outer pipe is pressed against the outer peripheral surface of the inner pipe to make the outer pipe and the inner pipe liquid-tight. The connection prevents the drainage water from the drainage pipe in the residential land from leaking between the inner circumference of the outer pipe and the outer circumference of the inner pipe.

According to a fifth aspect of the present invention, there is provided a connecting device between a drainage pipe and a drainage pipe, wherein the drainage pipe and the drainage pipe are connected to each other by an outer pipe and an inner pipe. A liquid-tightly connecting tightening means is provided, and the tightening means includes an annular tightening receiving member fitted and fixed to the outer periphery of the other end of the outer tube,
An annular tightening member slidably fitted to the outer circumference of one end of the inner pipe, and an annular seal member slidably fitted to the outer circumference of the one end of the inner pipe, A pressing surface is formed on one end surface of the tightening receiving member for pressing the seal member against the outer peripheral surface of the inner pipe, and a tightening engagement groove is formed on the outer peripheral surface. A pressing surface that faces the pressing surface of the tightening receiving member and presses the seal member against the outer peripheral surface of the inner pipe, and is fitted to the outer circumference of one end of the tightening receiving member from one end side of the tightening member. A fitting portion to be fitted is provided in a protruding manner, and a projection portion that engages with the tightening engagement groove is formed on the inner peripheral surface of the fitting portion.

Then, the length of the drainage connection pipe is adjusted in a state where the fastening between the fastening member and the fastening receiving member is released.
At this time, since the annular seal member slidably fitted to the outer periphery of the one end of the inner pipe is not pressed against the outer peripheral surface of the inner pipe, the resistance of the seal member is small and a large force is not required.

Further, after adjusting the length of the drainage connection pipe, the tightening member and the seal member are slid so that the protrusion formed on the inner peripheral surface of the fitting portion of the tightening member causes the tightening receiving member. By moving the tightening engagement groove formed on the outer peripheral surface of
The tightening member is guided, and the tightening member is tightened on the tightening receiving member. In this tightened state, a seal is formed by the pressing surface formed on one end surface of the tightening receiving member and the pressing surface formed on one end side of the inner peripheral surface of the tightening member facing the pressing surface. Since the member presses against the outer peripheral surface of the inner pipe and liquid-tightly connects the outer pipe and the inner pipe, drainage from the drainage pipe in the residential land leaks from between the inner periphery of the outer pipe and the outer periphery of the inner pipe. Surely prevent that.

According to a sixth aspect of the present invention, there is provided a drainage pipe / drainage pipe connecting device according to the fifth aspect, wherein the drainage pipe / drainage pipe connecting device is at least one of a fastening receiving member and a fastening member. A handle is provided on the outer periphery of the attaching member.

After adjusting the length of the drainage connecting pipe, at least the grip portion provided on the tightening member is grasped and the tightening member is pressed in the axial direction and the circumferential direction, whereby the tightening member is tightened. It will be in a state of being clamped to the receiving member and does not require a large force.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION The structure of an embodiment of a connecting device for a drainage pipe and a drainage pipe of the present invention will be described below with reference to FIGS. 1 and 2.

In FIG. 1, reference numeral 1 denotes a drainage connection pipe, which is composed of an inner pipe 2 made of synthetic resin and an outer pipe 3 fitted to the outer periphery of the inner pipe 2 so as to be expandable and contractible.

The inner pipe 2 has a drainage pipe connecting portion 4 formed at one end and having an enlarged diameter. Further, the outer tube 3 is
Drainage basin connection part 7 connected to the inlet 6 of the drainage basin 5 at one end
Are formed. The drainage basin connecting portion 7 has a diameter smaller than that of the outer pipe 3 and is eccentric about the central axis of the outer pipe 3 so that the inner peripheral lower surface of the drainage basin connecting portion 7 and the inner peripheral lower surface of the outer pipe 3 are separated from each other. It is on the same plane.

At the other end of the outer tube 3, an annular groove 9 is formed on the inner circumference by an annular projection 8 that bulges outward, and the annular groove 9 is formed on the outer circumference of the inner tube 2. A rubber ring 10 as a seal member that is pressed against is fitted and the outer pipe 3 is fitted to the outer periphery of the inner pipe 2 from the other end side in a liquid-tight manner so as to be slidable.

Further, an inflow side closing body 11 is detachably fitted to the drainage pipe connecting portion 4 of the inner pipe 2. The inflow side closing body 11 is formed in a cylindrical shape having an outer diameter that can be press-fitted into the inner circumference of the drainage pipe connecting portion 4 of the inner pipe 2, and the inner end side has a bottom portion 11
An annular flange portion 11b is formed on the outer end side of the drain pipe connecting portion 4 which is closed by a.

Further, the drainage pipe connecting portion 7 of the outer pipe 3 is
The outflow side blocking body 12 is detachably fitted from the inside of the inflow port 6 of the drainage basin 5. The outflow side blocking body 12 is formed in a tubular shape having an outer diameter that can be press-fitted into the inflow port 6 of the drainage basin 5 from the inside of the drainage basin 5, and the outer circumference of the inner end of the outflow side blocking body 12 is the outer pipe. The outer pipe fitting portion 13 has an outer diameter that can be press-fitted into the drainage basin connecting portion 7 of FIG. The outer end of the outflow-side closing body 12 is formed with a closing surface 14 that is inclined in a direction projecting downward from above in accordance with the inner opening edge of the inflow port 6 of the drainage basin 5. At 14 is formed a hook portion 15 which can be detached from the inside of the drainage basin 5.

As shown in FIG. 2, an outlet 16 is formed in the drainage basin 5 so as to face the inlet 6.
Is communicated with the outflow port 16 via an invert part 17, and a cleaning port 18 is opened on the upper surface of the invert part 17. A rising pipe 19 for inspection is connected to the cleaning port 18, and a manhole mouth frame 20 is installed on the rising pipe 19 for inspection.
The manhole cover 21 fitted in the manhole mouth frame 20 so as to be openable and closable is flush with the public road 22.

Further, at the boundary between the public road 22 and the residential land 23, a block fence wall structure 24 and a gutter 25 on the public road 22 side are provided adjacent to the fence structure 24. Is installed underground.

Further, in the residential land 23, an appropriate drainage basin connected to the drainage pipe in the residential land 23, for example, a drop basin 26 is embedded and installed, and the outlet 27 of the drop basin 26 is provided with drainage pipes 28, 29. The drainage connection pipe 1 is connected.

An annular groove 33 is formed in the inner periphery of the inflow port 6 of the drainage basin 5 by an annular protrusion 32 that bulges outward. A rubber ring 34 is press-fitted to the outer periphery of the. The drainage basin connecting portion 7 of the outer pipe 3 is liquid-tightly connected to the inflow port 6 of the drainage basin 5 by the rubber ring 34.

Next, the operation of this embodiment will be described.

As shown in FIG. 2, for example, at the time of building a residential land, the outer pipe 3 of the drainage connecting pipe 1 to be buried from within the residential land 23 is installed at the inlet of the drainage basin 5, which is a public basin installed on the public road 22. By inserting the drainage basin connecting portion 7 into the inflow port 6 of the drainage basin 5 which is embedded in the public road 22, the rubber ring 34 fitted in the inner circumferential annular groove 33 of the inflow port 6 of the drainage basin 5 is attached to the outer pipe 3. The outer tube 3 is liquid-tightly connected to the inflow port 6 of the drainage basin 5 by the rubber ring 34 while being pressed against the outer circumference of the drainage basin connecting portion 7.

Further, the inflow side closing body 11 is detachably fitted and closed to the drainage pipe connecting portion 4 of the inner pipe 2 of the drainage connecting pipe 1.
Further, the drainage pipe connecting portion 7 of the outer pipe 3 is detachably fitted and closed from the inside of the inflow port 6 of the drainage pipe 5 so as to close the drainage pipe from one end opening of the inner pipe 2. 5 is closed up to the inlet 6, and the drainage connection pipe 1 is backfilled. In this state, rainwater, groundwater, and earth and sand in the residential land 23 do not flow into the drainage connection pipe 1 including the drainage basin 5 and the inner pipe 2 and the outer pipe 3.

When a building is built in the residential land 23, the drain pipe 30 in the residential land 23 connected to the drainage facility of the building is connected to a drainage basin, for example, the inlet 31 of the drop basin 26, and this drop is performed. The drainage pipes 28, 29 connected to the drainage pipe connection portion 4 at the inflow side end of the drainage connection pipe 1 are connected to the outlet 27 of the basin 26. The end of the drain pipe 29 on the outflow side is arranged at a position where it can be connected to the drain pipe connecting portion 4 of the drain connecting pipe 1, and the inner pipe 2 is pulled out from the outer pipe 3 of the drain connecting pipe 1 to connect the drain pipe of the inner pipe 2. The inflow side blocking body 11 that has closed the part 4 is removed, and the outflow end side of the drainage pipe 29, which is the end of the drainage system in the residential land 23, is fitted to the drainage pipe connection part 4 at the inflow side opening end of the inner pipe 2. Glue and connect. At this time, the outflow side end of the drainage pipe 29 is adhered in a state of being inserted until it comes into contact with the inner end enlarged diameter step portion 4a of the drainage pipe connecting portion 4 of the inner pipe 2.

In this state, the drainage basin connection portion 7 of the drainage connection pipe 1 is closed by the outflow side blocking body 12 fitted from the inside of the inflow port 6 of the drainage basin 5, and the drainage inside the residential land 23 is drained. tube
Drainage from 28 and 29 never flows into the drainage basin 5.

After the completion inspection, the jig inserted from the cleaning port 18 of the drainage basin 5 is hooked on the hooking portion 15 formed on the outer surface of the outflow side closing body 12 and pulled out, so that the inflow port 6 of the drainage basin 5 is removed. At the same time as opening, the drainage pipe connecting portion 7 of the outer pipe 3 of the drainage connecting pipe 1 is opened.

The drainage water from the building of the residential land 23 is concentrated in the drop basin 26 and flows from the drainage pipes 28 and 29 through the inner pipe 2 and the outer pipe 3 of the drainage connection pipe 1 to the drainage pipe connection portion 7 of the outer pipe 3. And is discharged from the outlet 16 of the drainage basin 5 to the drainage main of the public road 22.

When drainage flows into the drainage basin 5 from the drainage connection pipe 1, the drainage basin connection portion 7 of the outer pipe 3 is eccentrically reduced in diameter so that the inner peripheral lower surface is flush with the inner peripheral lower surface of the outer pipe 3. Because,
No drainage pool is formed at the connection between the outer pipe 3 of the drainage connection pipe 1 and the drainage basin 5, and the drainage smoothly flows from the residential land 23 side to the drainage basin 5 of the public road 22.

At this time, the outer pipe 3 fitted to the outer circumference of the inner pipe 2 of the drainage connection pipe 1 is fitted with the rubber ring 10 in the annular groove 9 formed at the other end, and the rubber ring 10 is fitted to the inner pipe 2. The inner pipe 2 and the outer pipe 3 are pressure-contacted with the outer periphery of the pipe 2 and are kept liquid-tight, so that drainage does not leak.

Since the rubber ring 34 is fitted in the annular groove 33 formed at the tip of the inlet 6 of the drainage basin 5, the drainage basin connecting portion 7 of the outer pipe 3 is connected to the inlet 6 of the drainage basin 5. Closely connected.

Further, when cleaning the drainage basin 5, the manhole cover 21 is opened, and the drainage basin 5 can be cleaned from the cleaning port 18. The cleaning port lid fitted to the cleaning port frame 37 installed on the same surface is opened, and cleaning can be performed from the cleaning port 35 of the drop container 26.

Next, the construction of another embodiment of the connecting device between the drainage pipe and the drainage pipe of the present invention will be described with reference to FIGS. The structural parts that are substantially the same as those in the above-described embodiment will be described with the same reference numerals.

In FIG. 3, reference numeral 41 is a drainage connection pipe, and this drainage connection pipe 41 includes an inner pipe 2 molded of synthetic resin, an outer pipe 3 fitted to the outer periphery of the inner pipe 2, and these outer pipes 3. And tightening means 42 for connecting the inner tube 2 and the inner tube 2 in a liquid-tight manner.

The inner pipe 2 is formed with a drainage pipe connection portion 4 of a receiving port having an enlarged diameter at one end, and the outer pipe 3 is drained at one end to be connected to an inlet 6 of a drainage basin 5. The grid connection portion 7 is formed. The drainage basin connecting portion 7 has a diameter smaller than that of the outer pipe 3 and is eccentric with respect to the central axis of the outer pipe 3 so that the drainage basin connecting portion 7 has an inner peripheral lower surface and an inner peripheral lower surface of the outer pipe 3. And are on the same plane.

The tightening means 42 is slidably fitted to the outer circumference of the other end of the outer tube 3 and the outer circumference of the one end of the inner tube 2 and the annular tightening receiving member 43. It is composed of an annular tightening member 44 to be fitted and a rubber ring 45 as an annular seal member which is slidably fitted to the outer circumference of one end of the inner pipe 2.

As shown in FIG. 4, the tightening receiving member 43 is formed of synthetic resin in an annular shape, and one end side of the tightening receiving member 43 has a protruding portion 46 protruding in the inner circumferential direction. Is formed in a ring shape. Then, one end surface of the projecting portion 46 is an inclined surface that is inclined at a predetermined angle from the one end side to the other end side of the fastening receiving member 43 toward the central axis with respect to the surface perpendicular to the axis. An annular pressing surface 47 is formed, and this pressing surface 47
At 47, the rubber ring 45 is pressed against the outer peripheral surface of the inner tube 2.

Further, on one end side of the outer peripheral surface of the tightening receiving member 43, two tightening engaging grooves 51, 51 having a depth of approximately half the thickness of the tightening receiving member 43 are formed. It is formed with a gap of °.

The tightening engagement grooves 51, 51 are shown in FIG.
As shown in FIG. 5, an engagement guide portion 52 that is opened in one end surface of the tightening receiving member 43 and that extends along the axial direction, and a tightening guide portion 53 that extends along the circumferential direction that is continuous with the engagement guide portion 52, This tightening guide 53
In the circumferential direction continuous with the fastening portion 54 along a direction inclined from the one end side to the other end side of the fastening receiving member 43 at a predetermined angle, and in the circumferential direction continuous with the fastening portion 54. And a tightening holding portion 55 along with.

Further, on the other end side of the outer peripheral surface of the tightening receiving member 43, a cylindrical receiving member located in the vicinity of the center of the tightening portion 54 of the tightening engagement groove 51 and protruding in the outer peripheral direction. A handle portion 56 is provided.

On the other hand, as shown in FIG.
Is made of synthetic resin in an annular shape, and the tightening member 44 is provided with an annular protruding portion 61 protruding vertically in the inner circumferential direction. Then, on one end side of the inner peripheral surface of the protruding portion 61, an annular pressing surface that faces the pressing surface 47 of the tightening receiving member 43 and presses the rubber ring 45 against the outer peripheral surface of the inner tube 2.
62 is formed in a concave arc shape along a part of the outer shape of the rubber ring 45.

A fitting portion 63 fitted to the outer circumference of one end of the tightening receiving member 43 is provided so as to project from one end of the tightening member 44, and an inner peripheral surface of the fitting portion 63 is provided. , Tightening engagement grooves 51, 51
Are provided with substantially rectangular parallelepiped projections 64, 64.

Further, in the vicinity of the center of the outer peripheral surface of the tightening member 44, a cylindrical handle portion 65 protruding in the outer peripheral direction is provided at a position corresponding to one protruding portion 64, and the length of the drain connecting pipe 41 is increased. After adjusting, tightening member 44 and rubber ring 45
When the grip portion 65 is slid, the grip portion 45 is pressed in the axial direction and the circumferential direction, so that the fastening member 44 is fastened to the fastening receiving member 43.

On the other hand, the rubber ring 45 is made of rubber and has a ring shape with a substantially circular cross section, and is slidably fitted to the outer periphery of one end of the inner tube 2.

Further, the rubber ring 45 does not come into pressure contact with the outer peripheral surface of the inner pipe 2 when the protrusion 64 of the tightening member 44 is located at the engagement guide portion 52 or the tightening guide portion 53, but When 64 is located in the tightening and holding portion 55, it has a substantially circular cross section with a predetermined diameter such that it comes into pressure contact with the outer peripheral surface of the inner pipe 2.

An annular groove 71 is formed in an annular shape on the inner circumference of the drainage pipe connecting portion 4 of the enlarged diameter receiving port formed at one end of the inner pipe 2 of the drainage connection pipe 41. Then, a rubber ring 72 as a seal member, which is brought into pressure contact with the outer peripheral surface of the inflow side closing body 11, is fitted into the annular groove 71, and the inflow side closing body 11 is easily detached from the drain pipe connecting portion 4. To prevent. Also,
After adjusting the length of the drainage connection pipe 41, the inflow side blocking body 11 is removed from the drainage pipe connecting portion 4 of the inner pipe 2, and instead of the inflow side blocking body 11, drainage that becomes the end of the drainage system in the residential land. When the pipes are connected, the rubber ring 72 presses against the outer peripheral surface of the drain pipe, so that the inner pipe 2 and the connecting pipe are liquid-tightly connected, and the drainage does not leak.

Next, the operation of this embodiment will be described. In this embodiment, the tightening member 44 and the tightening receiving member 43 are used.
The length of the drainage connection pipe 41 is adjusted in the state where the tightening with and is released. At this time, the rubber ring 45 slidably fitted to the outer circumference of the one end of the inner pipe 2 is not in pressure contact with the outer peripheral surface of the inner pipe 2. Therefore, for example, when pulling out the inner pipe 2 from the outer pipe 3 of the drainage connection pipe 41, a large force is not required and workability is improved.

Further, after the length of the drainage connection pipe 41 is adjusted, the tightening member 44 and the rubber ring 45 become the tightening receiving member.
When it moves together with the inner pipe 2 apart from 43, it grips the receiving member handle portion 56 of the tightening receiving member 43 and the handle portion 65 of the tightening member 44, and tightens the tightening member 44 and the rubber ring 45. Element
Sliding toward 43, the protrusions 64, 64 of the tightening member 44 are guided to the engagement guide portions 52 of the tightening engagement grooves 51, 51 of the tightening receiving member 43.

Then, it is rotated in a predetermined direction in the circumferential direction, and the projections 64, 64 move the fastening engaging grooves 51, 51 from the engagement guide portion 52 to the fastening guide portion 53 and the fastening portion. By moving to the tightening holding portion 55 via 54, the tightening member 44 is guided in the left direction in FIG. 3, and the tightening member 44 is tightened by the tightening receiving member 43.

Here, when the protrusions 64, 64 move in the tightening portion 54, a part of the rubber ring 45 is pressed against the pressing surface 47 of the tightening receiving member 43, so that the rubber ring 45. Extends inward. Therefore, in the state where the fastening member 44 is fastened to the fastening receiving member 43, the pressing surface 47 formed on the one end surface of the fastening receiving member 43 and the pressing member 47 facing the pressing surface 47. Due to the pressing surface 62 formed on one end side of the inner peripheral surface, the rubber ring 45 comes into pressure contact with the outer peripheral surface of the inner pipe 2 and liquid-tightly connects the outer pipe 3 and the inner pipe 2 to each other. The drainage from the drainage pipe does not leak between the inner circumference of the outer pipe 3 and the outer circumference of the inner pipe 2.

As described above, according to the other embodiment described above, when the length of the drainage connection pipe 41 is adjusted, the rubber ring 45 slidably fitted to the outer periphery of the one end of the inner pipe 2 is provided. Since it is not pressed against the outer peripheral surface of the inner tube 2, the resistance by the rubber ring 45 is small, a large force is not required, and the workability can be improved.

After adjusting the length of the drainage connection pipe 41, the tightening member 44 and the rubber ring 45 are slid so that the protrusions 64, 64 move in the tightening engagement grooves 51, 51. ,
The tightening member 44 is guided leftward in FIG. 3, and the tightening member 44 is tightened by the tightening receiving member 43. Then, in this tightened state, the rubber ring 45 is deformed by the pressing surface 47 and the pressing surface 62, and is pressed against the outer peripheral surface of the inner pipe 2,
Since the outer pipe 3 and the inner pipe 2 are liquid-tightly connected, it is possible to reliably prevent the drainage from the drain pipe in the residential land from leaking between the inner periphery of the outer pipe 3 and the outer periphery of the inner pipe 2.

Further, since the receiving member handle portion 56 is provided on the outer peripheral surface of the tightening receiving member 43 and the handle portion 65 is provided on the outer peripheral surface of the tightening member 44, the length of the drainage connection pipe 41 is adjusted. After that, when the tightening member 44 is slid, by grasping the receiving member handle 56 and the handle 65 and pressing the tightening member 44 in the axial direction and the circumferential direction, the tightening member 44 is Tightening receiving member 43
It will be in a state of being tightened to, and does not require a large force,
The tightening member 44 and the rubber ring 45 can be easily slid easily, and the outer tube 3 and the inner tube 2 can be easily and reliably liquid-tightly connected.

Also in this embodiment, the method of connecting the drainage pipe and the drainage pipe, or the drainage pipe connection portion of the inflow side closing body 11 fitted to the drainage pipe connection portion 4 of the inner pipe 2 and the outer pipe 3. The method for attaching / detaching the outflow-side closing body fitted in 7 is substantially the same as the embodiment shown in FIGS. 1 and 2.

In addition, in the above-described other embodiment, the structure in which the receiving member handle portion 56 is formed on the outer peripheral surface of the tightening receiving member 43 has been described, but at least the tightening member 44 has the handle portion 65. May be provided.

Further, on the outer peripheral surface of the tightening receiving member 43, 2
The configuration in which the one tightening engagement groove 51, 51 is formed with a gap of about 180 ° has been described, but if the four tightening engagement grooves are formed with a gap of about 90 °, Positioning of the tightening member 44 becomes easy.

A description will be given of the structure in which the pressing surface 62 is formed in a concave arc shape along the shape of a part of the outer shape of the rubber ring 45 at one end side of the inner peripheral surface of the protruding portion 61 of the tightening member 44. However, it is also possible to use a pressing surface that is an inclined surface that is inclined outward at a predetermined angle from one end side to the other end side of the fastening member 44.

[0072]

According to the invention of claim 1, the length of the drainage connecting pipe connected to the inlet of the public basin is adjusted according to the width of the public basin buried in the public road to the fence structure, gutter, or the like. The length can be adjusted so that it can be connected to the outflow side end of the drainage pipe in the residential land, and the outflow side of the drainage pipe at the end matches the position of the outflow side end of the drainage pipe at the end of the drainage system in the residential land. By pulling the inner pipe to the position where the inner pipe of the drainage connecting pipe can be connected to the end, the drainage pipe inside the residential land can be easily and reliably connected to the inner pipe of the drainage connecting pipe, and the inflow side opening end of the drainage pipe Before the construction of the building in the residential land, the rainwater, groundwater, and earth and sand in the residential land must flow into the drainage pipe and the drainage connecting pipe consisting of the inner pipe and the outer pipe. Can be prevented.

Further, since the drainage pipe connection portion of the outer pipe of the drainage connection pipe is eccentrically reduced in diameter so that the inner peripheral lower surface is flush with the inner peripheral lower surface of the outer pipe, the drainage pipe is connected to the drainage pipe connecting portion. The recess for accumulating water is not formed, and drainage flows out smoothly.

According to the second aspect of the present invention, even after the construction of the building, the blockage of the drainage pipe connecting portion of the inner pipe of the drainage connection pipe in the residential land is removed and the drainage pipe in the residential land is connected. Since the drainage pipe connection portion of the outer pipe of the connection pipe is closed, the drainage pipe of the public bath can be prevented from flowing into the drainage pipe of the public bath until the completion inspection is completed.

According to the third aspect of the present invention, after the completion inspection of the drainage system in the residential area is completed, the jig inserted from the cleaning port of the drainage basin is hooked on the hooking portion formed on the closing surface of the outflow side closing body. Thus, the outflow-side blocker can be easily removed, and the drainage pipe connection portion of the outer pipe that serves as a drainage pipe can be opened to use the drainage system in the residential land.

According to the invention of claim 4, the annular seal member fitted in the annular groove formed in the inner periphery of the other end portion of the outer pipe is brought into pressure contact with the outer peripheral surface of the inner pipe, Since the inner pipe and the inner pipe are liquid-tightly connected, it is possible to prevent the drainage of the drainage pipe in the residential land from leaking between the inner periphery of the outer pipe and the outer periphery of the inner pipe.

According to the invention of claim 5, the length of the drainage connection pipe is adjusted in a state where the tightening of the tightening member and the tightening receiving member is released. The annular seal member that is slidably fitted to the outer periphery is not in pressure contact with the outer peripheral surface of the inner pipe. Therefore, the resistance of the seal member is small, a large force is not required, and the workability can be improved.

After the length of the drainage connection pipe is adjusted, the tightening member and the seal member are slid so that the projection formed on the inner peripheral surface of the fitting portion of the tightening member has a tightening receiving member. By moving the tightening engagement groove formed on the outer peripheral surface of the member, the tightening member is guided, and the tightening member is tightened by the tightening receiving member. In this tightened state, a seal is formed by the pressing surface formed on one end surface of the tightening receiving member and the pressing surface formed on one end side of the inner peripheral surface of the tightening member facing the pressing surface. Since the member presses against the outer peripheral surface of the inner pipe and liquid-tightly connects the outer pipe and the inner pipe, drainage from the drainage pipe in the residential land leaks from between the inner periphery of the outer pipe and the outer periphery of the inner pipe. Can be reliably prevented.

According to the sixth aspect of the invention, after adjusting the length of the drainage connection pipe, at least the grip portion provided on the fastening member is grasped and the fastening member is pressed in the axial direction and the circumferential direction. By doing so, the tightening member is tightened in the tightening receiving member, a large force is not required, the tightening member and the seal member can be easily slid, and the outer pipe and the inner pipe can be easily moved. And it can be connected in a liquid tight manner.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view of a connection device between a drainage pipe and a drainage pipe showing an embodiment of the present invention.

FIG. 2 is a side view of a drainage system using a drainage pipe and a drainage pipe connecting device.

FIG. 3 is a vertical sectional view of a connecting device between a drainage pipe and a drainage pipe showing another embodiment of the present invention.

FIG. 4 is an enlarged vertical sectional view showing a state after tightening of the tightening means in the connecting device between the drainage basin and the drainage pipe.

FIG. 5 is a plan view showing a tightening receiving member in the connecting device between the drainage pipe and the drainage pipe.

[Explanation of symbols]

 1,41 Drainage connection pipe 2 Inner pipe 3 Outer pipe 4 Drainage pipe connection part 5 Drainage basin 6 Inlet port 7 Drainage basin connection part 9 Annular groove 10 Rubber ring as a sealing member 11 Inflow side obstruction body 12 Outflow side obstruction body 14 Outflow Closure surface of the side closure 12 15 Hook 22 Public road 23 Residential land 29 Drain pipe 42 Tightening means 43 Tightening receiving member 44 Tightening member 45 Rubber ring as a sealing member 47 Pressing surface 51 Tightening engaging groove 62 Pressing surface 63 Fitting part 64 Projection part 65 Handle part

Claims (6)

[Claims] 1. A drainage connecting pipe that is installed by being buried across a residential land and a public road, wherein the drainage connecting pipe has an inner pipe formed at one end with a drainage pipe connecting portion for connecting a drainage pipe on the residential land side, and drainage. A drainage basin connecting portion connected to the inlet of the basin is formed at one end and is configured with an outer pipe slidably fitted to the outer periphery of the inner pipe from the other end side of the inner pipe. The drainage basin connecting portion is eccentrically reduced in diameter so that the inner peripheral lower surface is flush with the inner peripheral lower surface of the outer pipe, and the inflow side closing body is detachably fitted to the drainage pipe connecting portion of the inner pipe of the drainage connecting pipe. A device for connecting a drainage pipe and a drainage pipe, which is characterized in that 2. The drainage basin and drainage pipe according to claim 1, wherein the drainage tub connection portion of the outer pipe is provided with an outflow side closing body which is detachably fitted from the inside of the inlet of the drainage basin. Connection device with. 3. The drainage basin according to claim 2, wherein the blocking surface of the outflow side blocking body is formed with a hooking portion that allows the outflow side blocking body to be detached from the inside of the drainage basin. Connection device with drain pipe. 4. An annular groove is formed on the inner circumference of the other end of the outer pipe,
4. A drainage basin-drainage pipe connection device according to claim 1, wherein an annular sealing member that is pressed against the outer peripheral surface of the inner pipe is fitted in the annular groove. 5. A fastening means for liquid-tightly connecting the outer pipe and the inner pipe, the fastening means comprising an annular fastening receiving member fitted and fixed to the outer periphery of the other end of the outer pipe. An annular tightening member slidably fitted to the outer circumference of one end of the inner pipe, and an annular seal member slidably fitted to the outer circumference of the one end of the inner pipe, One end of the inner peripheral surface of the tightening member is formed with a pressing surface for pressing the seal member against the outer peripheral surface of the inner pipe, and a tightening engagement groove is formed on the outer peripheral surface on one end surface of the tightening receiving member. A pressing surface that faces the pressing surface of the tightening receiving member and presses the sealing member against the outer peripheral surface of the inner pipe, and from one end side of the tightening member to the outer circumference of one end of the tightening receiving member. A fitting portion to be fitted is provided in a protruding manner, and a projection portion that engages with the tightening engagement groove is formed on an inner peripheral surface of the fitting portion. Connection device and drainage basins and drainage pipe according to any one of claims 1 to 3 that. 6. The connection device between a drainage basin and a drainage pipe according to claim 5, wherein a handle portion is provided on at least the outer periphery of the tightening member of the tightening member and the tightening member.