JPH10102574A - Drain pit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain pit causing no flow trouble regardless of the inclined arrangement of a drain pipe. SOLUTION: A pit main body 1 is provided with a tubular side wall section 11 and a bottom section 12 arranged at the lower section of the side wall section 11. A drain pipe joint 2 is provided with a through hole 21 and a pipe connecting portion 22, and it is provided on the side wall section 11 of the pit main body 1. The hole inner wall face 211 of the through hole 21 is connected to the inner face 121 of the bottom section 12 on one end side, and the through hole 21 is opened to the outside of the pit main body 1 on the other end side. The pipe connecting portion 22 contains a recessed groove 221. The recessed groove 221 is provided around the opening end face of the through hole 21 except for a thick section surrounding the through hole 2 1, the remaining thick section forms a lug 222, and the inner wall face 223 facing the lug 222 is inclined at the angle θ against the hole axis of the through hole 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a drainage basin.

[0002]

2. Description of the Related Art In a drainage basin such as a manhole, when connecting an inflow pipe or a drainage pipe to the basin body, a pipe joint is provided on a cylindrical side wall of the basin body, and the inflow pipe and the drainage pipe are connected to the pipe joint. Connect. The pipe joint has a through hole for communicating the inside of the main body with the inflow pipe and the drain pipe, and a stepped portion is provided at an opening end surface of the through hole, and the inflow pipe and the drain pipe are provided in the step. Is positioned.

[0003] One of the problems of the drainage basin having such a structure particularly occurs at a connection portion of the drainage pipe. When the drainage pipe is laid in an inclined manner, one end of the drainage pipe is lifted upward at the stepped portion of the pipe joint and protrudes above the flow path formed on the bottom surface of the box body. There is. When the end of the drainpipe is lifted, dirt, dust and the like are caught on the lifted portion, causing flow obstruction.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a drainage basin which does not cause a flow obstruction despite the inclined arrangement of the drainage pipe.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a drainage basin according to the present invention includes a basin body and a drainage pipe joint. The box body has a cylindrical side wall and a bottom disposed below the side wall. The drainage pipe joint has a through hole and a pipe connection portion, and is provided on the side wall portion of the box body. The through hole has an inner wall surface that is continuous with the inner surface of the bottom at one end, and is open to the outside of the cell body at the other end.

[0006] The pipe connection portion includes a concave groove. The concave groove is provided around the opening end surface of the through hole except for a thick portion surrounding the through hole, and the remaining thick portion forms a protrusion, and an inner wall surface facing the protrusion is formed. The through-hole is inclined at an angle with respect to the axis of the through-hole.

In the drainage basin according to the present invention, a drainage pipe joint is provided on a side wall portion of the basin body, and a through hole of the drainage pipe joint has a bottom inner wall surface at one end side in a hole axis direction. And open to the outside of the box body at the other end. Therefore, the drainage flowing into the box body flows from the inner surface of the bottom of the box body to the through hole of the pipe joint without flow obstruction.

[0008] The pipe connection portion of the pipe joint includes a concave groove. The concave groove is provided around the opening end surface of the through hole except for a protrusion surrounding the through hole, and the remaining protrusions constitute the protrusions. In connecting the drain pipe, one end thereof is inserted into the groove and positioned. According to this connection structure, even if the drain pipe is laid slopingly, one end of the drain pipe is pressed by the projection constituted by the thick portion, and only causes a positional change in the groove. The position fluctuation does not appear inside the through hole constituting the flow path. Therefore, the flow obstruction does not occur despite the inclined arrangement of the drain pipe.

Since the inner wall of the groove facing the projection is inclined at an angle with respect to the hole axis of the through-hole, the groove can follow the inclined installation of the drain pipe within the given angle range. .

Other objects, configurations and effects of the present invention will be described in more detail with reference to the accompanying drawings which are embodiments.

[0011]

1 is a front sectional view of a drainage basin according to the present invention, and FIG. 2 is a side view of the drainage basin shown in FIG. As shown in the drawing, the drainage basin according to the present invention includes a basin main body 1 and a drainage pipe joint 2. Reference numeral 3 denotes an inflow pipe joint.

The box body 1 has a cylindrical side wall 11 and a bottom 12 disposed below the side wall 11. The drainage pipe joint 2 has a through hole 21 and a pipe connection portion 22,
It is provided on the side wall 11 of the basin body 1. Through hole 21
Has a hole inner wall surface 211 that is continuous with the inner surface 121 of the bottom 12 at one end, and opens outside the cell body 1 at the other end.

The pipe connecting portion 22 includes a concave groove 221. The concave groove 221 is provided around the opening end surface of the through hole 21 except for a thick portion surrounding the through hole 21,
The remaining thick portion constitutes the projection 222, and the inner wall surface 223 facing the outer peripheral surface of the projection 222 is inclined at an angle θ with respect to the hole axis O1 of the through hole 21. The concave groove 221 shown in the embodiment has a ring shape, and the protrusion 222 also has a ring shape.

FIG. 3 is a cross-sectional view showing a state of use of the drainage basin shown in FIGS. The drainage pipe 4 and the inflow pipe 5 are connected to the drainage pipe joint 2 and the inflow pipe joint 3 of the drainage basin, respectively. The drainage pipe joint 2 and the drainage pipe 4 are connected by a flexible connection ring 6 such as rubber. The connecting ring 6 is fastened and fixed to the drain pipe joint 2 and the drain pipe 4 by bands 7 and 8, respectively.

In the drainage basin according to the present invention, a drainage pipe joint 2 is provided on the side wall 11 of the basin body 1, and a through hole 21 of the drainage pipe joint 2 is provided at one end in the direction of the hole axis O1. The hole inner wall surface 211 is continuous with the inner surface 121 of the bottom portion 12, and opens to the outside of the cell body 1 at the other end. Therefore, the drainage flowing into the inside of the basin body 1 from the inflow pipe 5 is
From the inner surface 121 of the bottom 12 of the basin body 1 to the through hole 2 of the pipe joint
Flow to 1 without flow obstruction.

The pipe connecting portion 22 of the pipe joint 2 has a groove 221.
Contains. The concave groove 221 is provided around the opening end surface of the through hole 21 except for a thick portion surrounding the through hole 21, and the remaining thick portion constitutes a projection 222. When connecting the drain pipe 4, one end thereof is connected to the
Insert it into 1 and position. According to this connection structure,
Even if the drain pipe 4 is laid at an angle, the drain pipe 4
Is held down by the protrusion 222, the position of the groove only changes in the groove 221. The position change does not appear in the through hole 21 forming the flow path. Therefore, the flow obstruction does not occur regardless of the inclined arrangement of the drain pipe 4.

The concave groove 221 has an inner wall surface 223 facing the outer peripheral surface of the projection 222 at an angle θ with respect to the hole axis O1 of the through hole 21.
Therefore, the drain pipe 4 can follow the inclined installation within the range of the attached angle θ.

FIG. 4 is a front sectional view showing another embodiment of the drainage basin according to the present invention, and FIG. 5 is a side view of the drainage basin shown in FIG. In the figure, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals. A feature of this embodiment is that the concave groove 221 is provided in an arc shape around the lower half of the through hole 21. Also in this embodiment, the drainage pipe and the inflow pipe are connected according to the connection structure shown in FIG. Also in this case, the operation and effect described with reference to FIGS.

FIG. 6 is a front sectional view showing still another embodiment of the drainage basin according to the present invention. In the figures, FIG. 1 and FIG.
The same components as those described above are denoted by the same reference numerals. The feature of this embodiment is that the drainage pipe joint 2 is a part that can be handled independently of the box body 1 and is attached to the box body 1. At the time of attaching the drainage pipe joint 2 to the basin body 1, joining is performed using a bonding agent 9 or mechanical coupling means is used. Although not shown, the independent structure shown in FIG. 6 can be adopted for the drainage pipe joint having the structure shown in FIGS. 4 and 5. Also in this embodiment, the drainage pipe and the inflow pipe are connected according to the connection structure shown in FIG. Then, the operation and effect described with reference to FIGS. 1 and 2 are achieved.

[0020]

As described above, according to the present invention, it is possible to provide a drainage basin which does not cause a flow obstruction despite the inclined arrangement of the drainage pipe.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a drainage basin according to the present invention.

FIG. 2 is a side view of the drainage basin shown in FIG.

FIG. 3 is a sectional view showing a use state of the drainage basin shown in FIGS. 1 and 2;

FIG. 4 is a front sectional view showing another embodiment of the drainage basin according to the present invention.

FIG. 5 is a side view of the drainage basin shown in FIG.

FIG. 6 is a front sectional view showing still another embodiment of the drainage basin according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Masu main body 2 Drainage pipe joint 21 Through hole 22 Pipe connection part 221 Groove 222 Projection

Claims (7)

[Claims] 1. A drainage basin including a basin body and a drainage pipe joint, wherein the basin body has a cylindrical side wall portion and a bottom portion disposed below the side wall portion, The drainage pipe joint has a through hole and a pipe connection portion, and is provided on the side wall portion of the box body. In the through hole, at one end side, an inner wall surface of the hole is continuous with an inner surface of the bottom portion. The other end side is open to the outside of the box body, the pipe connecting portion includes a concave groove, the concave groove is a thick portion surrounding the through hole at the opening end face of the through hole , The remaining thick portion constitutes a projection, and the inner wall surface facing the thick portion is inclined at an angle with respect to the hole axis of the through hole. Masu. 2. The drainage basin according to claim 1, wherein the concave groove has a ring shape. 3. The drainage basin according to claim 1, wherein the concave groove is provided in an arc shape around a lower half of the through hole. 4. A drainage pipe joint for a drainage basin including a through hole and a pipe connection part, wherein the pipe connection part includes a concave groove, and the concave groove is formed at an opening end face of the through hole. A thick portion surrounding the through hole is provided around the hole, and the remaining thick portion constitutes a projection, and an inner wall surface facing the thick portion with respect to a hole axis of the through hole. Drainage pipe fitting for drainage basins inclined at an angle. 5. The drainage pipe joint for a drainage basin according to claim 4, wherein the concave groove has a ring shape. 6. The drainage pipe joint for a drainage basin according to claim 4, wherein the concave groove is provided in an arc shape around a lower half of the through hole. Fittings. 7. A drainage basin facility including a drainage basin and a pipe, wherein the drainage basin includes a basin body and a drainage pipe joint, wherein the basin body has a cylindrical side wall; A bottom portion disposed at a lower portion of the side wall portion, wherein the drainage pipe joint has a through hole and a pipe connection portion, and is provided on the side wall portion of the box body; The hole has, on one end side, an inner wall surface of the hole continuous with the inner surface of the bottom portion, and the other end side is open to the outside of the box body. The pipe connection portion includes a concave groove, Is provided around the opening end surface of the through hole, leaving a thick portion surrounding the through hole, the remaining thick portion constitutes a projection, and an inner wall surface facing the thick portion is formed. The pipe is inclined at an angle to a hole axis of the through-hole, and the pipe includes at least a drain pipe, Serial drainpipe catch basins equipment whose one end is inserted into the recessed groove.