JP7160601B2 - rainwater trout - Google Patents

Description

The present invention relates to rainwater basins.

2. Description of the Related Art Conventionally, as a downpipe of a building such as a house, there is known a rainwater basin connected to a horizontal pipe piped underground, as disclosed in Patent Document 1, for example. Such a rainwater tank is generally made of polypropylene (PP) or made of polyvinyl chloride (PVC) and has a configuration in which the inflow port (receptacle) of the horizontal pipe is provided at a predetermined angle in the circumferential direction. There is a thing of

JP 2016-194214 A

However, the conventional rainwater tank described above has the following problems.
That is, in the rainwater tank made of polyvinyl chloride, the insertion port (receptacle) of the lateral pipe is provided at a fixed angular position in the circumferential direction. In other words, since the insertion port is not provided at a position suitable for the space and layout of the site, there is a risk that it will be difficult to insert the horizontal pipe into the rainwater basin during construction.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a rainwater receptacle that can increase the degree of freedom of piping and improve workability at the site.

In order to achieve the above object, a rainwater catch according to a first aspect of the present invention is a rainwater catch connected to a horizontal pipe buried in the ground from a downpipe of a building, comprising a main body and a riser pipe receiving portion. and have The mass main body has a laterally extending peripheral wall and a bottom surface.

The side-pulling insertion outer peripheral wall can form an insertion opening into which the end of the side-pulling pipe is inserted. The riser receiving portion is attached to the mass body and has an opening that communicates with the riser when the riser is connected. The area of the opening of the riser receiving portion is smaller than the area of the bottom surface.

As a result, an insertion opening having a predetermined outer diameter can be formed at an arbitrary position on the outer peripheral wall of the mass main body at the site, and the horizontal pulling pipe can be inserted into the insertion opening to the inside of the mass main body for connection. can do.

In this way, the angle of inflow and outflow of the horizontal pipe can be freely set at the construction site. For this reason, it is possible to adjust the inflow and outflow angle of the horizontal pipe, and to adjust the rainwater basin, like the conventional rainwater basin in which the socket of the horizontal pipe is provided at the position where the inflow and outflow angle of the horizontal pipe is fixed. Problems such as carrying in a pipe with an incorrect shape of the port can be eliminated, the degree of freedom in piping can be increased, and workability at the site can be improved.

A rainwater basin according to a second invention is the rainwater basin according to the first invention, wherein the riser pipe receiving portion has a riser pipe receiving port and a mounting portion. The riser socket forms an opening. The mounting portion extends outwardly from the perimeter of the riser socket and mounts the riser socket to the mass body.

This allows the riser pipe socket to be connected to the mass body. For example, when a so-called tame-trout is used for the mass main body, a riser pipe socket can be provided in the upper opening of the tame-trout.

A rainwater basin according to a third aspect of the invention is the rainwater basin according to the first or second aspect of the invention, wherein the laterally extending outer peripheral wall is cylindrical and connected to the bottom surface.
As a result, the trout can be used as the trout main body.

A rainwater basin according to a fourth invention is the rainwater basin according to any one of the first to third inventions, further comprising a regulating portion. The restricting portion is provided inside the outer peripheral wall of the laterally-pulled pipe, has an abutment surface with which the end portion can abut when the laterally-pulled pipe is inserted, and regulates the amount of insertion of the end portion. In a state in which the riser pipe is connected to the riser pipe receiving portion, the contact surface is arranged closer to the outer peripheral wall side than the inner peripheral surface of the riser pipe.

This makes it easier to clean the bottom of the mass body since the end portion does not enter the inside of the riser pipe in plan view.

According to the rainwater receptacle of the present invention, it is possible to increase the degree of freedom of piping, and to improve workability on site.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows schematic structure of the drainage structure arrange|positioned at the house by embodiment of this invention. FIG. 2 is a perspective view of the rainwater basin shown in FIG. 1; Fig. 2 is a side cross-sectional view of a rainwater basin; FIG. 10 is a perspective view of the rainwater tank, showing a state in which an insertion opening is formed in a part of the outer peripheral wall of the horizontal pull-out. FIG. 10 is a side view of the rainwater catch, showing the first reference line displayed on the outer circumferential wall of the main body of the catch. FIG. 10 is a side view of the rainwater catch, showing a second reference line displayed on the outer circumferential wall of the main body of the catch. FIG. 4 is a side cross-sectional view of the rainwater tank, showing a state in which an insertion opening is formed in a part of the outer peripheral wall of the horizontal pull-out. FIG. 4 is a plan cross-sectional view of the rainwater basin, showing a state in which a plurality of lateral pipes are inserted; FIG. 4 is a diagram showing a state in which an insertion opening is formed in a rainwater basin using a hole punching jig; FIG. 4 is a perspective view showing a state in which an alignment hole is formed in a rainwater basin; FIG. 3 is a vertical cross-sectional view showing a state in which a bucket for sumping mud is arranged inside the rainwater basin shown in FIG. 2 ; FIG. 11 is a side view showing the configuration of a rainwater basin according to a first modified example; (a) A side view showing the structure of a basket inserted into the rainwater basin of FIG. 12, (b) A diagram showing the insertion of the basket into the rainwater basin of FIG. FIG. 11 is a cross-sectional plan view showing the configuration of a rainwater basin according to a second modification;

Hereinafter, a rainwater catchment and a rainwater catchment construction method according to an embodiment of the present invention will be described in detail with reference to the drawings.

<Configuration>
(Overview of drainage structure)
FIG. 1 is a diagram showing a schematic configuration of a drainage structure using a rainwater basin according to the present embodiment. As shown in FIG. 1, the rainwater tank 1 according to the present embodiment is provided in a lateral pipe 4 that is buried in the ground G via a curved pipe portion 23 in a downpipe 21 of a house (building).

Specifically, as the rainwater drainage of the building of this embodiment, rainwater flowing through the eaves gutter 20 attached to the eaves of the roof is directed to the downpipe 21 provided with the drainpipe cover 24 near the ground. It is constructed so as to flow into the horizontal pull pipe 4 buried in the ground via the portion 23 .

The horizontal pipe 4 is connected to the rainwater basin 1, and the water is discharged from the rainwater basin 1 through the horizontal pipe 4 to a sewage pipe (not shown).

In addition, sewage drainage from a drainage facility (for example, a toilet 31) generated indoors is discharged from a vertical pipe 25 to a main sewage pipe 30 through a horizontal pipe 26 and a confluence basin (not shown).

(rainwater cell 1)
FIG. 2 is a perspective view showing the rainwater basin 1. FIG. FIG. 3 is a side sectional view of the rainwater basin 1. FIG.

The rainwater basin 1 of the present embodiment has a basin body portion 40, a riser pipe receiving portion 50, and a stopper 60 (an example of a regulating portion). In the rainwater basin 1 of this embodiment, the central axes of the basin main body 40 and the rising receiving portion 50 are arranged on a common axis.

Hereinafter, this common axis will be referred to as the mass axis O, the side of the rainwater bucket 1 on the side of the riser pipe receiving portion 50 along the direction of the mass axis O will be referred to as the upper side, and the opposite side will be referred to as the lower side.

Further, in a plan view of the rainwater basin 1 viewed from the direction of the basin axis O, the direction orthogonal to the basin axis O is called the radial direction, and the direction rotating around the basin axis O is called the circumferential direction.

(Mass main body 40)
The mass main body 40 has a cylindrical shape with a bottom, and has a laterally extending peripheral wall 41 , a bottom 42 , and a connecting portion 43 .

The lateral pull-out outer peripheral wall 41 can form an insertion opening 41a into which the insertion end portion 4a for connecting the lateral pull-up pipe 4 is inserted. FIG. 4 is a perspective view of the rainwater receptacle 1 showing a state in which an insertion opening 41a is formed in the outer peripheral wall 41 for laterally pulling. The horizontal pulling pipe 4 is inserted into this insertion port 41a.

The outer peripheral wall 41 for horizontal pulling is formed in a cylindrical shape centered on the mass axis O, has an outer diameter of 330 mm or less, and has a height larger than the diameter of the insertion end 4a (4b) of the horizontal pulling pipe 4. is set.

Further, as shown in FIGS. 5 and 6 , a reference line 15 indicating the formation position of the insertion opening 41 a may be displayed on the laterally inserting outer peripheral wall 41 . The first reference line 15A shown in FIG. 5 is displayed by a line extending in the circumferential direction on the outer surface of the laterally inserted outer peripheral wall 41 and a plurality of lines extending in the vertical direction (vertical direction) orthogonal to the circumferential direction. .

The second reference line 15B shown in FIG. 6 is indicated by a line consisting of triple concentric circles at predetermined angles (for example, 45°) along the circumferential direction.

As shown in FIG. 3 , the bottom portion 42 is arranged so as to block the lower end of the cylindrical laterally extending outer peripheral wall 41 and is connected to the laterally extending outer peripheral wall 41 .

The connecting portion 43 is formed at the upper end of the laterally-pulled outer peripheral wall 41 . The connecting portion 43 has a pedestal portion 43a and an edge portion 43b. A later-described riser pipe receiving portion 50 is mounted on the pedestal portion 43a. The pedestal portion 43 a has an annular shape and is formed radially outward from the upper end of the laterally inserted outer peripheral wall 41 .

The edge portion 43b is cylindrical and formed upward from the radially outer end of the pedestal portion 43a. The edge portion 43b is positioned radially outward of the riser pipe receiving portion 50, and an annular sealing member 61 made of rubber is arranged therebetween. A seal member 61 seals between the connecting portion 43 and the riser pipe receiving portion 50 .

The seal between the connecting portion 43 and the riser pipe receiving portion 50 is not limited to the rubber member of the present embodiment, and caulking material or the like may be used as long as it can be sealed.

FIG. 7 is a side cross-sectional view showing a state in which the horizontal pulling pipe 4 is inserted into the insertion port 41a shown in FIG. In addition, although only one horizontal pull pipe 4 is shown in FIG. 7, a plurality of horizontal pull pipes 4 are often connected.

As shown in FIG. 7, when the horizontal pipe 4 is inserted, the area from the lower end 4e of the horizontal pipe 4 of the mass body 40 to the bottom surface 42a of the bottom 42 functions as a mud pool 40s. An annular sealing member 63 made of rubber is arranged between the edge of the insertion opening 41a and the outer periphery of the horizontal pulling tube 4 to seal the edge of the insertion opening 41a and the horizontal pulling tube 4. there is

The seal between the rim of the insertion port 41a and the horizontal pulling tube 4 is not limited to the rubber member of the present embodiment, and caulking material or the like may be used as long as it can be sealed.

(Riser pipe receiving portion 50)
The riser pipe receiving portion 50 connects the riser pipe 19 . The riser pipe 19 is connected to the upper side of the rainwater basin 1, as shown in FIG. The riser pipe 19 extends toward the ground for use in removing mud accumulated in the mud pool 40s, etc., and a protective hat (not shown) is fitted on the upper end thereof. The riser pipe 19 may be made of polyvinyl chloride, polypropylene, or the like.

The riser pipe receiving portion 50 is arranged above the mass body portion 40 as shown in FIG. The riser receiving portion 50 has a riser pipe receiving port 51 and a mounting portion 52 .

The riser pipe socket 51 has a tubular portion 51a and a projecting portion 51b. The central axis of the cylindrical portion 51a coincides with the mass axis O. As shown in FIG. The protruding portion 51b has an annular shape and is formed from the lower end of the cylindrical portion 51a toward the mass axis O side (diametrically inward).

When the riser pipe 19 is inserted inside the tubular portion 51a, as shown in FIG. 7, the lower end of the riser pipe 19 contacts the upper surface 51s of the protruding portion 51b, and the insertion of the riser pipe 19 causes the upper surface 51s to contact the upper surface 51s. regulated by Also, the riser pipe socket 51 has an opening 51c formed therein, and the opening 51c communicates with the internal space of the riser pipe 19 when the riser pipe 19 is connected.

The opening 51c is arranged to face the mud pool portion 40s along the mass axis O, as shown in FIG. The opening 51c is the smallest radially inward of the projecting portion 51b.

An annular seal member 62 made of rubber is arranged between the riser pipe socket 51 and the riser pipe 19 , and the seal member 62 seals the gap between the riser pipe socket 51 and the riser pipe 19 . It is

The seal between the riser pipe socket 51 and the riser pipe 19 is not limited to the rubber member of the present embodiment, and caulking material or the like may be used as long as it can be sealed.

Further, as shown in FIG. 3, the area of the opening 51c of the riser pipe socket 51 (in this embodiment, the area of the radially inner side of the projecting portion 51b) is defined as S1, and the area of the bottom surface 42a of the mass body 40 is defined as S2. Then, S1<S2 is formed.

The mounting portion 52 mounts the rising socket 51 on the upper portion of the mass body portion 40 . The mounting portion 52 has an annular shape and is formed radially outward from the periphery of the riser pipe socket 51 . As shown in FIG. 3, the outer edge portion 52a of the mounting portion 52 is placed on the pedestal portion 43a of the mass body portion 40 from above.

A sealing member 61 is arranged in a compressed state between the outer edge portion 52a and the edge portion 43b to seal the space between the outer edge portion 52a and the edge portion 43b.

Note that the connecting portion 43 and the mounting portion 52 function as a connecting portion that connects between the laterally-pulled outer peripheral wall 41 and the riser pipe socket 51 .

(Stopper 60)
The stopper 60 is an example of a restricting portion, and restricts the insertion of the horizontal pulling tube 4 by a predetermined amount or more. The stopper 60 is cylindrical and is formed to protrude toward the bottom portion 42 from the radially inner end of the projecting portion 51 b of the riser pipe receiving portion 50 . The stopper 68 has a contact surface 68a on the radially outer peripheral side.

As shown in FIG. 7, the insertion end portion 4a of the horizontal pulling pipe 4 abuts against the contact surface 60a of the stopper 60, thereby restricting further insertion of the insertion end portion 4a.

Moreover, it is preferable that the insertion port 41a described above is formed so as to overlap with a stopper 60 described later in the radial direction. This is because the stopper 60 can regulate the amount of insertion of the horizontal pulling pipe 4 .

Specifically, the insertion opening 41a is preferably formed at a position where an extension line L1 (see FIG. 7, which will be described later) of the upper end of the insertion opening 41a intersects with a stopper 60, which will be described later.

As shown in FIG. 7, the distance W1 from the laterally extending outer peripheral wall 41 to the contact surface 60a is less than or equal to the spacing W2 from the laterally extending outer peripheral wall 41 to the inner peripheral surface 19a of the riser pipe 19.

That is, when the riser pipe 19 is attached to the rainwater receptacle 1 , the contact surface 60 a is located closer to the outer peripheral wall 41 side (diameter direction outside) than the inner peripheral surface 19 a of the riser pipe 19 .

In the radial direction, the inner peripheral surface 60b of the stopper 60 generally coincides with the position of the inner peripheral surface 19a of the riser pipe 19, but this need not be the case. However, from the viewpoint of cleaning mud, it is preferable that the stopper 60 is formed radially outward of the inner peripheral surface 19a.

In the present embodiment, polypropylene or the like is used as the material of the rainwater basin 1 including the mass body 40, the riser pipe receiving portion 50, and the stopper 60. is sealed by a sealing member 61, but it is not limited to polypropylene.

For example, polyvinyl chloride may be used, in which case the mass body portion 40 and the riser pipe receiving portion 50 can be sealed by an adhesive.

FIG. 8 is a cross-sectional plan view showing a state in which a plurality of lateral pipes 4 are connected to the rainwater receptacle 1. As shown in FIG. The position of the cross section in FIG. 8 corresponds to between AA' in FIG. 8, the stopper 60 is omitted in order to show the positional relationship between the riser pipe 19 and the lateral pull pipe 4. As shown in FIG.

In FIG. 8, the insertion opening 41a into which the first horizontal pulling tube 4A is inserted is indicated as 41aA, and the insertion opening 41a into which the second horizontal pulling tube 4B is inserted is indicated as 41aB.

In FIG. 8, when the outer diameter of the main body 40 of the rainwater tank 1 is 330 mm, the first horizontal pipes 4A with a nominal diameter of φ100 (outer diameter of 114 mm) are inserted into the rainwater tank 1 at an angle θ1 of 90°. are connected so that

Further, in the configuration shown in FIG. 8, the rainwater basin 1 has a second horizontal pipe 4B having a nominal diameter of φ75 (outer diameter of 89 mm) between the first horizontal pipes 4A, 4A. The insertion angle θ2 with respect to 4A is set at 45°.

In FIG. 8, reference numerals C1 and C2 (C) denote the central axes of the first horizontal pulling pipe 4A, and the angle θ1 between these central axes C1 and C2 is 90°.

In FIG. 8, reference symbol C3(C) is the central axis of the second horizontal pipe 4B, and the angle .theta.2 between it and the central axes C1 and C2 of the first horizontal pipes 4A and 4A is 45.degree.

The insertion end portion 4a of the first horizontal pulling pipe 4A is located radially outside the inner peripheral surface 19a of the riser pipe 19 when viewed from above. The positions of the two first horizontal pulling pipes 4A are restricted by stoppers 60. As shown in FIG.

Also, the insertion end 4b of the second horizontal pull-out tube 4B is positioned to abut on the pair of first horizontal pull-up tubes 4A, 4A, and an insertion length of 40 mm is ensured at this time.

The total length (length in the vertical direction) of the rainwater tank 1 is preferably 350 mm or less, and the total length (length in the vertical direction) of the mud pool 40s is preferably 150 mm or more.

<Construction method>
Next, the construction method for connecting the horizontal pipe 4 to the rainwater basin 1, the rainwater basin, and the operation of the rainwater basin construction method will be described in detail with reference to the drawings.

In the present embodiment, as shown in FIG. 4, when connecting the rainwater catch 1 to the horizontal draw pipe 4, first, at an arbitrary position on the outer peripheral wall 41 of the catch main body 40, as shown in FIG. As shown, an insertion opening 41a (see FIG. 4) having a predetermined outer diameter is formed by penetrating the outer peripheral wall 41 by laterally inserting using a punching jig 7 (piercing means).

Here, the drilling jig 7 can employ an electric jig having a cutter 72 at the tip of the rotating shaft 71 .

As shown in FIG. 7, the transverse pipe 4 is inserted into the insertion opening 41a through the sealing member 63 to the inside of the mass main body 40. As shown in FIG. Specifically, as shown in FIG. 7, the sealing member 63 is provided between the outer peripheral surface 4c of the thin end portion 4f of the horizontal pulling pipe 4 and the insertion port 41a.

At this time, the horizontal pulling tube 4 is inserted until the insertion end 4a of the horizontal pulling tube 4 contacts the contact surface 60a of the stopper 60 (see FIG. 7).

As described above, the horizontal pipe 4 is connected to the rainwater receptacle 1 .
In the present embodiment, as shown in FIG. 4, a hole having a predetermined outer diameter is formed at an arbitrary position on the outer peripheral wall 41 of the mass main body 40 by using a hole forming means (a hole forming jig 7 shown in FIG. 9). can be formed, and the horizontal pulling pipe 4 can be inserted into the insertion port 41a through the sealing member 63 to the inside of the mass body portion 40 for connection. In this way, the angle of inflow and outflow of the lateral pipe 4 can be freely set at the construction site.

Therefore, the angle of inflow and outflow of the horizontal pipe 4 can be adjusted and the rainwater Problems such as carrying in a mass with a wrong shape for the socket of the mass can be eliminated, the degree of freedom of piping can be increased, and workability at the site can be improved.

When forming an insertion opening 41a with a predetermined outer diameter at an arbitrary position on the outer peripheral wall 41 of the mass main body 40 by using a hole making means (piercing jig 7 shown in FIG. 9), By providing alignment holes 40g (see FIG. 10) corresponding to respective hole diameters (for example, 50A, 75A, and 100A) in the wall 41, the desired hole diameter can be obtained when the hole is drilled with the drilling jig 5 at the construction site. It can be formed at any desired position.

For example, the alignment hole 40g may be stamped with the hole diameter, so that it is possible to know at a glance which alignment hole 40g has the desired hole diameter, thereby improving working efficiency.

Further, the alignment holes 40g are preferably formed along the same straight line along the direction of the mass axis O and in the circumferential direction, but they may be formed in a displaced manner.

In addition, since the outer peripheral wall 41 is formed in a cylindrical shape and has an outer diameter of 330 mm or less, the outer diameter of the mass main body 40 can be suppressed while maintaining a nominal diameter of φ100 (external 114 mm in diameter) can be horizontally pulled and inserted into the outer peripheral wall 41 .

Furthermore, in this embodiment, as shown in FIGS. 5 and 6, an insertion opening 41a (see FIG. 4) can be formed, which eliminates the need for a positioning operation for making a hole, and allows the insertion opening 41a to be formed with high accuracy.

As described above, in the present embodiment, the angle of inflow and outflow of the horizontal pull pipe 4 can be freely set at the construction site, so that the degree of freedom of piping can be increased, and workability at the site can be improved. can.

Further, in this embodiment, as shown in FIG. 11, the inside of the rainwater basin 1 is drained by using a bucket 16 for accumulating mud, which is provided so as to be able to be inserted and pulled out from the opening 51c of the riser pipe socket 51 inside the basin body 40. It is also possible to accommodate the mud that accumulates in the

The bucket 16 has a size that can be accommodated in the mass body part 40, and is set to a size that does not interfere with the lateral pull pipe 4 inserted into the mass body part 40 when passing through the riser pipe socket 51.例文帳に追加

The bucket 16 is detachably provided with a handle 161 used for taking out. When taking out the mud accumulated inside the bucket 16, the mud can be efficiently removed by holding the handle 161 and taking out only the bucket 16. - 特許庁

After the mud in the bucket 16 is removed, the bucket 16 can be housed in the mass body 40 again. A projection or the like for positioning the bucket 16 may be provided on the bottom surface 42 a of the bottom portion 42 .

(Other embodiments)
Although the embodiment of the rainwater trough and the construction method of the rainwater trout according to the present invention has been described above, the present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the gist of the present invention. be.

(A)
For example, as in the first modified example shown in FIG. 12, it is possible to employ a rainwater permeation basin as the rainwater basin 1A. A large number of small holes 12a, 12a, . . .

Rainwater and mud can flow out into the ground outside the rainwater basin 1A through the large number of small holes 12a.

Note that a basket 17 as shown in FIG. 13(a) may be installed in the rainwater basin 1A main body 40. As shown in FIG.

The basket 17 is provided with a handle 18, a plurality of large holes 17c are formed in the upper portion of the peripheral surface 17a, a plurality of small holes 17d are formed in the lower portion, and a drain is provided in the lower end portion. A hole 17e is formed to prevent clogging of the small hole 12a formed in the lower part of the rainwater basin 1A.

As shown in FIG. 13B, the basket 17 is inserted into the mass body 40 from the riser tube socket 51 or the riser tube 19 (not shown).

(B)
Further, in the present embodiment described above, the mass body portion 40 is formed in a circular shape when viewed from above, but the cross section is not limited to such a circular shape.

For example, a rainwater basin 1B according to the second modification shown in FIG. 14 may be configured to have a semi-arc cross-section having a partial linear portion 40h in the basin main body 40. FIG.

In this case, the length dimension of the rainwater receptacle 1B in the left-right direction of FIG. 14 can be reduced, so the space efficiency at the time of installation can be improved.

For example, by arranging the straight portion 40h of the rainwater basin 1B of the second modified example closer to the building side, the distance between the rainwater drainage pipe and the building can be reduced, and it is possible to reduce the distance between the rainwater drainage pipe and the building. Plumbing can be installed well.

(C)
In the present embodiment, reference lines 15A and 15B are provided on the outer peripheral wall 41 of the mass main body 40 to determine the position of the insertion opening 41a. It is also possible to adopt a reference line with other representations.

(D)
Further, in the rainwater receptacles 1, 1A, and 1B of the above embodiments, the insertion opening 41a is formed on site, but only one insertion opening 41a may be formed in advance.

For example, even if the rainwater permeation basin is used as a rainwater permeation basin, it is necessary to connect at least one pipe to the outer peripheral wall 41 for laterally pulling. Therefore, by providing an insertion port 41a into which a pipe can be inserted in advance at one location, it is possible to reduce work at the site.

Also, a socket, such as a riser socket, may be provided from the side-pull outer peripheral wall 41 around the insertion opening 41a.

(E)
The shape, size, material, etc., of the rainwater basins 1, 1A, and 1B, and the shape, size, and material of the main body 40 and the riser pipe receiving portion 50 are not limited to the above-described embodiments, and can be set within an appropriate range. can do.

For example, in the present embodiment, the shape of the mass body portion 40 and the riser pipe receiving portion 50 is a cylindrical shape that is circular when viewed from the top. It does not matter if it is from

Further, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the scope of the present invention.

Reference Signs List 1, 1A, 1B Rainwater basin 4 Horizontal pipe 4a End 19 Rise pipe 21 Downspout 40 Mass main body 41 Horizontal pipe insertion outer peripheral wall 41a Insertion port 42 Bottom 42a Bottom surface 50 Rise pipe receiving portion 51 Rise pipe receiving port 51c Opening 52 Mounting part O mass shaft

Claims (4)

A rainwater basin connected to a horizontal pipe buried in the ground from a building's downpipe,
a laterally-pulled outer peripheral wall capable of forming an insertion opening into which the end of the laterally-pulled pipe is inserted; and a mass body portion having a bottom surface;
a riser pipe receiving portion attached to the mass body portion and formed with an opening communicating with the riser pipe when the riser pipe is connected;
a regulating portion that is provided inside the laterally-pulled insertion outer peripheral wall, has an abutment surface with which the end portion can abut when the laterally-pulled pipe is inserted, and regulates the amount of insertion of the end portion; with
The area of the opening of the riser pipe receiving portion is smaller than the area of the bottom surface,
The restricting portion is formed so as to protrude toward the bottom surface from an end of the riser pipe receiving portion on the bottom surface side,
the riser pipe receiving portion has a riser pipe receiving port that forms the opening and into which the riser pipe is inserted;
The contact surface is a surface on the outer peripheral side of the restricting portion,
The restricting portion is arranged radially inward of the riser pipe socket,
rainwater trout. A rainwater basin connected to a horizontal pipe buried in the ground from a building's downpipe,
a laterally-pulled outer peripheral wall capable of forming an insertion opening into which the end of the laterally-pulled pipe is inserted; and a mass body portion having a bottom surface;
a riser pipe receiving portion attached to the mass body portion and formed with an opening communicating with the riser pipe when the riser pipe is connected;
a regulating portion that is provided inside the laterally-pulled insertion outer peripheral wall, has an abutment surface with which the end can come into contact when the laterally-pulled pipe is inserted, and regulates the amount of insertion of the end; with
The area of the opening of the riser pipe receiving portion is smaller than the area of the bottom surface,
the restricting portion is formed so as to protrude from the bottom-side end of the riser pipe receiving portion toward the bottom surface so that only an upper portion of the end portion of the horizontal pull pipe abuts thereon;
The contact surface is a surface on the outer peripheral side of the restricting portion,
rainwater trout. The riser pipe receiving portion
further comprising a mounting portion extending outward from the periphery of the riser pipe socket and mounting the riser pipe socket to the mass body;
A rainwater catch basin according to claim 1 or 2 . In a state in which the riser pipe is connected to the riser pipe receiving portion, the contact surface is arranged closer to the laterally extending outer peripheral wall than the inner peripheral surface of the riser pipe.
A rainwater basin according to any one of claims 1-3.

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