JP7356606B2 - Rainwater basins and construction methods for rainwater basins - Google Patents

Description

The present invention relates to a rainwater basin and a method for constructing a rainwater basin.

BACKGROUND ART Conventionally, as shown in Patent Document 1, for example, a rainwater basin connected to a horizontal pipe installed underground has been known as a vertical gutter of a building such as a house. Such rainwater drains are generally made of polypropylene (PP) or made of polyvinyl chloride (PVC) and have a horizontal pipe inlet (socket) located at a predetermined angle in the circumferential direction. There is something like that.

Japanese Patent Application Publication No. 2016-194214

However, the conventional rainwater basin described above has the following problems.
That is, the overall shape of a polypropylene rainwater basin (tamemasu) is large due to manufacturing reasons. In the case of such a large rainwater basin, there are problems in that the rainwater basin itself is large and difficult to handle during construction in a house with a narrow space, and construction is also difficult due to conflicts with connected pipes.
In addition, in a rainwater basin made of polyvinyl chloride, the insertion port (socket) of the horizontal pipe is provided at a position at a predetermined angle in the circumferential direction. In other words, since the insertion port is not provided at a position that matches 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 provides a rainwater basin and a rainwater basin construction method that can increase the degree of freedom of piping and improve workability on site. It is intended to.

In order to achieve the above object, the rainwater basin according to the present invention is a rainwater basin connected from a downpipe of a building to a horizontal pipe buried underground, the end of the horizontal pipe being inserted inside. a mass body portion having a cylindrical horizontal extension outer peripheral wall in which an insertion port can be formed; a riser pipe socket for connecting a riser pipe at the upper end of the mass body portion; and a riser pipe socket provided at the lower end of the mass body portion. a cylindrical mud basin, the area of the mud basin in top view is smaller than the area of the mass main body, and the mass main body is configured to rise from the horizontal drawer outer peripheral wall. It is characterized in that it is provided with a continuous part connected to each of the pipe socket and the mud reservoir part.

Further, a method for constructing a rainwater basin according to the present invention is a method for constructing a rainwater basin in which the horizontal pipe is connected to the rainwater basin described above, and the method comprises: , a step of penetrating the outer circumferential wall of the horizontally drawn pipe using a hole opening means to form the insertion port having a predetermined outer diameter; and a step of inserting the horizontally drawn pipe into the insertion port to the inside of the mass main body. It is characterized by having the following.

In the present invention, since the outer diameter of the mud basin is smaller than the outer diameter of the mass main body into which the end of the horizontal draw pipe is inserted, the overall shape of the rainwater mass can be made smaller. In other words, in the rainwater basin of the present invention, a space is formed below the main body of the rainwater basin and on the outside of the mud basin in the radial direction. When a separate system is installed underground, it becomes possible to arrange the drainage pipe for wastewater close to the space. Therefore, the distance between the rainwater drain pipe and the sewage drain pipe can be made close to each other, making it possible to efficiently install piping in a house with a narrow space.

Furthermore, in the present invention, an insertion port having a predetermined outer diameter can be formed at any position on the outer circumferential wall of the mass main body by using a hole-opening means, and the horizontal pipe can be inserted into the insertion port of the mass main body. It can be inserted and connected to the inside of the section. In this way, the inflow and outflow angles of the horizontal pipe can be freely set at the construction site. For this reason, unlike conventional rainwater basins, which have a horizontal pipe socket at a fixed position, it is possible to adjust the horizontal pipe's inflow and outflow angles, and to This eliminates problems such as bringing in items with the wrong opening position, increases the degree of freedom in piping, and improves workability on site.

Moreover, in the present invention, the horizontal draw pipe is formed such that the outer diameter of the mass body part is larger than the outer diameter of the mud reservoir part, and the insertion end of the horizontal draw pipe is inserted into the outer peripheral part of the mass main body part and inserted into the outer peripheral wall. The insertion length of the section can be secured. Therefore, it is possible to securely connect by inserting the horizontal draw pipe, and it is also possible to create a structure in which the insertion end of the inserted horizontal draw pipe does not overlap with the opening of the mud basin in the mass axis direction. Become. Thereby, a basket or the like for cleaning the inside of the mud sump can be inserted into the mud sump without interfering with the inserted horizontal draw pipe.

Further, in the rainwater basin according to the present invention, it is preferable that the outer diameter of the mud basin section is set to 180 mm or less.

In this case, a member having a small cross section with an outer diameter of 180 mm or less for the mud basin can be constructed, and the rainwater basin can be reliably downsized.

Moreover, in the rainwater basin according to the present invention, it is preferable that the horizontal extension outer peripheral wall is formed in a cylindrical shape and has an outer diameter set to 330 mm or less.

In the rainwater basin according to the present invention, it is possible to insert a plurality of horizontally drawn pipes having a nominal diameter of φ100 (outer diameter 114 mm), which are standardly used, into the outer circumferential wall of the horizontally drawn basin, while suppressing the outer diameter of the main body of the mass. It becomes a shape.

Moreover, in the rainwater basin according to the present invention, it is preferable that a reference line indicating a formation position of the insertion opening is displayed on the outer circumferential wall of the horizontal extension.

In this case, the insertion opening can be formed using a hole-opening means at a position aligned with the reference line of the outer circumferential wall of the horizontal drawer, eliminating the need for positioning work for opening the hole, and making it possible to form the insertion opening with precision. Can be formed well. For example, by providing reference lines at every 45° angle in the circumferential direction, insertion ports can be provided at necessary angles within the 45° intervals.

Furthermore, in the method for constructing a rainwater basin according to the present invention, the horizontal draw pipe is inserted into the insertion port such that the insertion end of the horizontal draw pipe is located radially outside the upper opening edge of the mud basin. It is preferable that

According to the present invention, it is possible to create a structure in which the insertion end of the inserted horizontal draw pipe does not overlap the opening of the mud reservoir in the mass axis direction. Thereby, a basket or the like for cleaning the inside of the mud sump can be inserted into the mud sump without interfering with the inserted horizontal draw pipe.

According to the rainwater basin and rainwater basin construction method of the present invention, it is possible to downsize it, and the inflow and outflow angles of the horizontal pipe can be freely set at the construction site, so the degree of freedom in piping is increased. It is possible to improve the workability on site.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the schematic structure of the drainage structure arrange|positioned in the house by the 1st Embodiment of this invention. FIG. 2 is a perspective view of the rainwater basin shown in FIG. 1. FIG. FIG. 3 is a side view of the rainwater basin. FIG. 2 is a vertical cross-sectional view of the rainwater basin, in which an insertion opening is formed in a part of the horizontal drawer outer peripheral wall. FIG. 5 is a cross-sectional view taken along the line AA shown in FIG. 4, showing a state in which a plurality of horizontal drawing pipes are inserted. FIG. 6 is a sectional view taken along the line BB shown in FIG. 5, showing a state in which the horizontal drawing tube is inserted into the insertion port. It is a side view of a rainwater basin, and is a figure where the 1st reference line is displayed on the horizontal extension outer peripheral wall of the main body part of a rainwater basin. It is a side view of a rainwater basin, and is a figure where the 2nd reference line is displayed on the horizontal extension outer peripheral wall of the mass body part. It is a figure which shows the state which forms the insertion hole using the hole-drilling jig in a rainwater basin. (a) and (b) are diagrams showing the arrangement of rainwater drainage pipes and sewage drainage pipes. FIG. 6 is a half-sectional view of the configuration of a rainwater basin according to a second embodiment when viewed from the side, in which (a) shows the state before the insertion port is formed, and (b) shows the state after the insertion port is formed. FIG. It is a perspective view which shows the structure of the rainwater basin by 3rd Embodiment. FIG. 13 is a half-sectional view of the rainwater basin shown in FIG. 12 viewed from the side. 13 is a longitudinal cross-sectional view of the rainwater basin shown in FIG. 12. FIG. 13 is a side view showing the configuration of the lower member shown in FIG. 12. FIG. FIG. 15 is a vertical cross-sectional view of the rainwater cells shown in FIG. 14 stacked vertically. FIG. 17 is a vertical cross-sectional view of a rainwater basin according to a modified example in a state where the rainwater basins are stacked one on top of the other in the vertical direction, and corresponds to FIG. 16 . FIG. 14 is a longitudinal cross-sectional view showing a state in which a bucket for collecting mud is placed inside the rainwater basin shown in FIG. 13. It is a side view which shows the structure of the rainwater basin by a 1st modification, and a basket before it is inserted into a rainwater basin. 6 is a horizontal sectional view showing the configuration of a rainwater basin according to a second modification, and corresponds to FIG. 5. FIG.

EMBODIMENT OF THE INVENTION Hereinafter, the rainwater basin of embodiment of this invention and the construction method of a rainwater basin will be described in detail based on drawings.

(First embodiment)
As shown in FIG. 1, the rainwater basin 1 according to the present embodiment is provided in a horizontal pipe 4 buried underground through a bent pipe section 23 in a vertical gutter 21 of a house (building).
Specifically, for rainwater drainage in the building of this embodiment, the rainwater flowing into the eaves gutter 20 attached to the eaves of the roof is drained into a vertical gutter 21 equipped with a drainpipe cover 24 near the ground, using a curved pipe section. 23 to flow into the horizontal draw pipe 4 buried underground. The horizontal drain pipe 4 is connected to the rainwater basin 1, and water is drained from the rainwater basin 1 through the horizontal drain pipe 4 to a sewer pipe (not shown). In addition, sewage drainage generated indoors from drainage equipment (for example, the toilet 31) is drained from the vertical pipe 25 through the horizontal pipe 26 and into the main sewage pipe 30 via an unillustrated confluence or the like.

As shown in FIGS. 2 to 4, the rainwater basin 1 can be formed with an insertion opening 13 into which an insertion end 4a (4b) for connecting the horizontal pipe 4 shown in FIGS. 5 and 6 is inserted. A riser pipe socket 11 connects a mass main body part 10 having a cylindrical horizontal extension outer peripheral wall 10a and a riser pipe 19 extending toward the ground for use in mud removal etc. at the upper end of the mass main body part 10. and a cylindrical mud reservoir part 12 provided at the lower end of the mass body part 10.
In addition, the rainwater mass 1 of this embodiment also includes a rainwater permeation mass in which a plurality of holes are formed in the mud reservoir portion 12.

Materials for the rainwater basin 1 include polyvinyl chloride, polypropylene, and the like. For example, in terms of cost, polypropylene can be manufactured at low cost, but as will be described later, the riser pipe 19 cannot be bonded, so the structure is such that the riser pipe 19 is connected by a joint. On the other hand, polyvinyl chloride is used when such riser pipe 19 can be bonded.

In the rainwater basin 1 of this embodiment, the central axes of the basin main body 10, the riser pipe socket 11, and the mud basin 12 are arranged on a common axis. Hereinafter, this common axis will be referred to as a mass axis O, the mud basin portion 12 side of the rainwater mass 1 along the mass axis O direction will be referred to as the lower side, and the riser pipe socket 11 side of the rainwater mass 1 will be referred to as the upper side. Furthermore, in a plan view of the rainwater mass 1 from the direction of the mass axis O, the direction perpendicular to the mass axis O is referred to as the radial direction, and the direction of rotation around the mass axis O is referred to as the circumferential direction.

The mass main body part 10 is provided with continuous parts 10b, 10b that connect from the horizontal drawer outer peripheral wall 10a to the riser pipe socket 11 and the mud reservoir part 12, respectively. The horizontal drawer outer peripheral wall 10a is formed in a cylindrical shape centered on the mass axis O, has an outer diameter of 330 mm or less, and has an outer wall height larger than the diameter of the insertion end 4a (4b) of the horizontal drawer pipe 4. It is set.

Further, as shown in FIGS. 7 and 8, a reference line 15 indicating the formation position of the insertion port 13 is displayed on the horizontal drawer outer peripheral wall 10a. The first reference line 15A shown in FIG. 7 is displayed from a line extending in the circumferential direction on the outer surface of the horizontal drawing outer peripheral wall 10a 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. 8 is a line formed by three concentric circles at every predetermined angle (for example, 45°) along the circumferential direction.

The riser pipe socket 11 has a base end 11A connected to the mass body 10 from above, and a socket main body 11B having a slightly larger diameter than the base end 11A. The socket main body 11B is arranged coaxially. A riser pipe 19 is connected to the socket body 11B by adhesive (if the rainwater basin 1 is made of polyvinyl chloride). The riser pipe 19 connected to the rainwater basin 1 has an upper end extending to the above-ground portion, and a protective hat (not shown) is fitted onto the upper end.

The mud reservoir portion 12 has a base end portion 12A connected to the mass body portion 10 from below, and a mud reservoir body 12B having a slightly larger diameter than the base end portion 12A. The mud reservoir section 12 is formed to have a smaller diameter than the mass body section 10, and the outer diameter of the mud reservoir section 12 is set to 180 mm or less.

In the rainwater basin 1 configured in this way, as shown in FIG. The insertion angle θ1 between the first horizontally drawn pipes 4A and 4A (114 mm) is 90°, and a second horizontally drawn pipe 4B with a nominal diameter of φ75 (outer diameter 89mm) is inserted between these first horizontally drawn pipes 4A and 4A. The insertion angle θ2 with respect to the first horizontal drawing pipe 4A is set at 45°. In FIG. 5, symbols C1 and C2 (C) are the central axes of the first horizontal drawing pipe 4A, and the angle θ1 between these central axes C1 and C2 is 90°. Moreover, in FIG. 5, the code|symbol C3 (C) is the central axis of the 2nd horizontal drawing pipe 4B, and the angle (theta)2 with the central axis C1, C2 of the 1st horizontal drawing pipe 4A, 4A is 45 degrees. The insertion end 4a of the first horizontal draw pipe 4A is located at the outer peripheral edge of the opening of the mud reservoir section 12 when viewed from above. Further, the insertion end 4b of the second horizontally drawn pipe 4B is in a position where it comes into contact with the pair of first horizontally drawn pipes 4A, 4A, and an insertion length of 40 mm is secured at this time.
The total length of the rainwater basin 1 is preferably 350 mm or less, and the total length of the mud basin 12 is preferably 150 mm or more.

Next, the construction method for connecting the horizontal pipe 4 to the rainwater basin 1 described above, the rainwater basin, and the operation of the rainwater basin construction method will be described in detail using the drawings.
In this embodiment, as shown in FIG. 1, when connecting the rainwater tank 1 to the horizontal pipe 4, first, at an arbitrary position on the horizontal pipe outer peripheral wall 10a of the mass main body 10, as shown in FIG. As shown, an insertion opening 13 (see FIGS. 5 and 6) having a predetermined outer diameter is formed by penetrating the horizontal drawer outer peripheral wall 10a using a hole punching jig 5 (hole punching means). Here, as the hole-drilling jig 5, an electric jig having a cutter 52 at the tip of a rotating shaft 51 can be adopted.

As shown in FIG. 6, the horizontal draw pipe 4 is inserted into the insertion port 13 through the water stop packing 14 to the inside of the mass body 10. Specifically, the water stop packing 14 is provided between the outer circumferential surface 42a of the thin end portion 42 of the horizontal drawing pipe 4 and the insertion port 13. At this time, the horizontal drawing pipe 4 is inserted into the insertion port 13 such that the insertion end 4a (4b) of the horizontal drawing pipe 4 is located radially outside the upper opening edge of the mud reservoir part 12 (see FIG. 5). ). It is possible to create a structure in which the insertion end portion 4a (4b) of the horizontal draw pipe 4 inserted in this manner does not overlap the opening of the mud reservoir portion 12 in the direction of the mass axis O. Thereby, a basket or the like for cleaning the inside of the mud sump 12 can be inserted into the mud sump 12 without interfering with the horizontal drawing pipe 4 inserted therein.

In the rainwater basin 1 configured in this way, the outer diameter of the mud basin part 12 is smaller than the outer diameter of the mass body part 10 into which the insertion end 4a of the horizontal draw pipe 4 is inserted. The overall shape of the device 1 can be made smaller. That is, in the rainwater basin 1 of this embodiment, as shown in FIG. 10(a), the space S is formed below the mass main body part 10 in the rainwater basin 1 and radially outward of the mud basin part 12. When a drainage pipe P1 for rainwater and a drainage pipe P2 for sewage generated from indoors are arranged underground in separate systems in a house etc., it is possible to arrange the drainage pipe P2 for sewage close to the space S. It becomes possible.
Therefore, the distance L1 between the rainwater drainpipe P1 and the sewage drainpipe P2 is different from the distance L1 between the rainwater drainpipe P1 and the drainpipe P1 for sewage in the conventional case using a bucket-shaped tank 1A as shown in FIG. 10(b), for example. It can be placed closer than the distance L2 of the drain pipe P2 for sewage, and the pipes can be installed efficiently in a house with a narrow space.

In addition, in this embodiment, as shown in FIG. 6, a predetermined hole is formed at an arbitrary position on the horizontally extending outer peripheral wall 10a of the mass main body 10 using a hole punching means (the hole punching jig 5 shown in FIG. 9). An insertion port 13 having an outer diameter can be formed, and the horizontal drawing pipe 4 can be inserted into the insertion port 13 and connected to the inside of the mass body portion 10 via a water stop packing 14. In this way, the inflow and outflow angles of the horizontal draw pipe 4 can be freely set at the construction site.
Therefore, like a conventional rainwater tank in which the inlet and outflow angle of the horizontal pipe 4 is set at a predetermined position, it is possible to adjust the inflow and outflow angle of the horizontal pipe 4. This eliminates problems such as bringing in something with the wrong shape of the mass socket, increasing the degree of freedom in piping, and improving workability on site.

When forming an insertion opening 13 of a predetermined outer diameter at an arbitrary position on the horizontally extending outer peripheral wall 10a of the mass body portion 10 using a hole punching means (the hole punching jig 5 shown in FIG. 9), the horizontally extending outer peripheral wall 10a is formed. By providing alignment holes 10g (see FIGS. 12 and 13) in accordance with each hole diameter (for example, 50A, 75A, 100A) in the hole 10a, when drilling a hole with the drilling jig 5 at the construction site, the desired hole can be easily selected. The diameter can be formed at a desired position.
Note that by marking the alignment hole 10g with the hole diameter, for example, it is possible to see at a glance which alignment hole 10g has the desired hole diameter, thereby improving work efficiency.
Moreover, although it is preferable that the alignment holes 10g are formed on the same straight line at the center position of the hole drilled by the hole punching jig 5, they may be formed in a displaced manner.

Furthermore, in the present embodiment, the outer diameter of the mass main body part 10 is formed larger than the outer diameter of the mud reservoir part 12, and the horizontal draw pipe 4 is horizontally drawn to the outer circumferential part of the mass main body part 10 and is attached to the outer circumferential wall 10a. The insertion length of the insertion end 4a (4b) of the horizontal draw pipe 4 to be inserted can be ensured. Therefore, the connection by inserting the horizontal draw pipe 4 can be performed reliably, and the insertion end 4a (4b) of the inserted horizontal draw pipe 4 can be prevented from overlapping with the opening of the mud reservoir part 12 in the direction of the mass axis O. This makes it possible to create a structure with no structure. Thereby, a basket or the like for cleaning the inside of the mud sump 12 can be inserted into the mud sump 12 without interfering with the horizontal drawing pipe 4 inserted therein.

Furthermore, in this embodiment, the mud basin portion 12 can be configured as a member having a small cross section with an outer diameter of 180 mm or less, and the rainwater basin 1 can be reliably downsized.
Furthermore, since the horizontal pullout outer peripheral wall 10a is formed in a cylindrical shape and has an outer diameter set to 330 mm or less, it can suppress the outer diameter of the mass main body 10 and, for example, the standard nominal diameter φ100 (outer diameter The shape allows a plurality of horizontally drawn pipes 4 (114 mm) to be inserted into the horizontally drawn outer peripheral wall 10a.

Furthermore, in this embodiment, as shown in FIGS. 7 and 8, the insertion opening 13 (see FIG. 8) is 5) can be formed, eliminating the need for positioning work for opening the hole, and making it possible to form the insertion opening 13 with high accuracy.

In this way, in this embodiment, it is possible to downsize, and the inflow and outflow angles of the horizontal pipe 4 can be freely set at the construction site, so the degree of freedom in piping can be increased, and the construction site It is possible to improve the workability in.

(Second embodiment)
The rainwater tank 1A of the second embodiment shown in FIGS. It has a structure in which the base end part 12A of the mud reservoir part 12 is omitted, and it is further divided into two parts vertically along the mass axis O at the position of the mass body part 10 (upper member 10A, lower member 10B). ) is formed from. That is, the rainwater basin 1A has a structure in which two members are formed by injection molding and joined together with an adhesive.
It should be noted that these two members can be maintained together by fitting each member in addition to using an adhesive.

As shown in FIG. 11(a), in the upper member 10A, the horizontal extension outer peripheral wall 10a of the mass main body part 10, the upper connecting part 10b, and the socket main body 11B of the riser pipe socket 11 are integrally injection molded. It is a member that has been The lower member 10B is a member in which the lower continuous portion 10b of the mass body portion 10 and the mud reservoir body 12B of the mud reservoir portion 12 are integrally injection molded. Note that in this embodiment, the continuous portions 10b of the upper member 10A and the lower member 10B form a plane perpendicular to the direction of the mass axis O, but it is also possible to slope the continuous portions 10b. By providing the continuous portion 10b with an inclination, mud and water can easily flow into the mud reservoir portion 12.

The continuous portion 10b of the lower member 10B is formed with a protruding edge portion 10e that extends over the entire outer periphery thereof and is used to adhere the lower end portion 10d of the upper member 10A. The lower end 10d of the upper member 10A is disposed in a fitted manner on the inner peripheral side of the projecting edge 10e and is bonded with an adhesive. The rainwater basin 1A shown in FIG. 11(b) is made by drilling a hole at a predetermined location on the horizontal drawer outer peripheral wall 10a using a hole-drilling jig 5 (see FIG. 9), and an insertion opening 13 having a predetermined outer diameter is formed. It is formed.

A stopper 10f is formed on the socket body 11B, extending in a direction intersecting the continuous portion 10b. By forming the stopper 10f, when inserting the horizontal drawing pipe 4, the insertion amount can be controlled, and the insertion end 4a of the horizontal drawing pipe 4 can be prevented from entering the position of the outer peripheral edge of the opening of the mud reservoir part 12. can. Thereby, when taking out the mud accumulated in the mud sump 12, a bucket (described later) housed inside the mud sump 12 can be easily taken out.

In the second embodiment, as described above, the base end portions 11A and 12A (see FIG. 2) of the riser pipe socket 11 and the mud basin portion 12 are omitted, so that the overall shape of the rainwater basin 1A is reduced. Can be made smaller. In addition, since it is manufactured by integrally bonding two members, the upper member 10A and the lower member 10B, each member can be manufactured not only by injection molding but also by using a mold.

(Third embodiment)
As shown in FIGS. 12 to 14, the rainwater basin 1B according to the third embodiment is a more specific example of the rainwater basin 1A according to the second embodiment (see FIGS. 11(a) and (b)). The structure is as follows.
The rainwater basin 1B consists of two members (an upper member 6A and a lower member 6B) that are divided into upper and lower halves, and can be formed by injection molding or the like. Here, the upper member 6A has a cylindrical horizontal drawer outer peripheral wall 60 in which an insertion opening 60a (see FIG. 13) into which the insertion ends 4a and 4b of the horizontal drawer tube 4 shown in FIG. 5 are inserted can be formed. It corresponds to the main body of the mass. The upper member 6A has an upper connecting part 62 that connects a riser pipe socket 61 and a horizontal pullout outer peripheral wall 60 to the upper end, which connects the riser pipe 19 (see FIG. 14), and a horizontal pullout outer peripheral wall 60 and a lower connecting part 62. It has a lower connecting part 63 that connects the member 6B.

The riser pipe socket 61 is made of a cylindrical body having a diameter smaller than that of the horizontal drawing outer peripheral wall 60. The upper connecting portion 62 is a ring-shaped flange that connects the vertically intermediate portion of the riser pipe socket 61 and the upper end of the horizontally extending outer peripheral wall 60 and extends along the circumferential direction. In the upper continuous portion 62, a plurality of reinforcing ribs 64 that protrude vertically are arranged at intervals in the circumferential direction. The upper reinforcing portion 64A of the reinforcing rib 64 located above the upper connecting portion 62 is connected to the upper surface 62a of the upper connecting portion 62 and the outer peripheral surface 61a of the riser pipe socket 61. On the other hand, the lower reinforcing portion 64B located on the lower side of the upper connecting portion 62 is connected to the lower surface 62b of the upper connecting portion 62, the outer circumferential surface 61a of the riser pipe socket 61, and the inner circumferential surface 60c of the horizontal pullout outer circumferential wall 60. It is connected to the.

When combining the molded upper member 6A and lower member 6B, the rainwater mass 1B is assembled by applying a load to the lower member 6B from the direction of the axis O of the rainwater mass 1B and inserting the upper member 6A. It is formed. At this time, since the reinforcing ribs 64 are provided on the upper connecting portion 62, deformation of the upper connecting portion 62 due to load being applied to the horizontally extending outer peripheral wall 60 of the upper member 6A and the upper connecting portion 62 is prevented. It is possible to prevent this and improve the strength of the rainwater mass 1B against stress.
Note that the reinforcing rib 64 only needs to be formed at a location where it does not get in the way, and as in the third embodiment, it is sufficient to simply form the upper reinforcing portion 64A at a position outside the rainwater basin 1B. Instead, the lower reinforcing portion 64B can be formed at a position inside the rainwater basin 1B.

In the upper member 6A, the position of the insertion lower end 61b of the riser pipe 19 in the riser pipe socket 61 is located below the position of the outer peripheral upper edge portion 60b of the horizontally drawn outer peripheral wall 60 of the upper member 6A. Thereby, the riser pipe 19 can be deeply inserted inside the rainwater basin 1B, and the rainwater basin 1B can be made more compact.
Note that the position of the lower insertion end 61a into which the riser pipe 19 is inserted is, as described above, lower than the outer circumferential upper edge 60b, and the horizontal drawer inserted into the insertion opening 60a of the outer circumferential wall 60. 4 (see FIG. 5), and can be determined by appropriately adjusting the height during construction.

The lower member 6B is detachably connected to the lower connecting portion 63 of the upper member 10A, and corresponds to the cylindrical mud reservoir described above. The lower member 6B is formed to have a smaller diameter than the upper member 6A. The lower member 6B includes a bottomed cylindrical mud reservoir receiving portion 65, and a mounting portion 66 extending radially outward from the top of the mud reservoir receiving portion 65 (see FIG. 15). The mounting portion 66 is fitted and connected to the lower connecting portion 63 of the upper member 6A, and is provided with a plurality of reinforcing ribs 67 at intervals in the circumferential direction.

In this case, as shown in FIG. 16, when the upper member 6A and the lower member 6B are combined, the lower end 67b of the reinforcing rib 67 of the lower member 6B is connected to the upper end of the riser pipe socket 61 of the upper member 6A. 61c so as to be placed from above, a plurality of rainwater cells 1B can be stacked and stored in a vertically overlapping manner. Here, FIG. 16 shows a state in which one set of rainwater cells 1B are stacked one on top of the other. With such a configuration, the space for storage can be reduced and storage efficiency can be improved.

Moreover, in the modification shown in FIG. 17, a notch 67a is formed in the lower end 67b of the reinforcing rib 67, with which the upper end 61c of the riser pipe socket 61 of the upper member 6A is engaged. That is, by engaging the upper end 61c of the riser pipe socket 61 of the upper member 6A with the notch 67a of the lower member 6B, a plurality of rainwater cells 1B can be formed in the vertical direction with the upper member 6A and the lower member 6B combined. You can stack them and store them on top of each other.
As another configuration, the above-mentioned notch 67a can be omitted by enlarging the hole at the peripheral edge of the lower member 6B, and in this case there is an advantage that it becomes easier to stack a plurality of members.

In addition, in this embodiment, as shown in FIG. 18, a rainwater basin 1B is constructed using a bucket 16 for a mud basin, which is provided inside the mass main body part 60 so that it can be inserted into and taken out from the riser pipe socket 61 of the upper member 6A. It is also possible to contain mud that accumulates inside. The bucket 16 has a size that can be accommodated in the mud reservoir receiving portion 65 of the lower member 6B, and is set to a size that does not interfere with the horizontal draw pipe 4 inserted into the upper member 6A when passing through the upper member 6A. . The bucket 16 is detachably provided with a handle 161 that is used when taking out the bucket. When removing mud accumulated inside the bucket 16, the mud can be efficiently removed by holding only the bucket 16 by the handle 161. After the mud in the bucket 16 is removed, the bucket 16 can be stored in the mud reservoir 12 again.

For the bucket 16, polyolefin such as polyethylene or polypropylene can be used, for example. In this case, since the hardness is softer than the mud sump 65 made of vinyl chloride, by configuring the bucket 16 in a size that matches the size of the mud sump 65, water can be The buoyancy of the bucket 16 can prevent it from floating.

Further, the bucket 16 may be provided with a socket (not shown) on the upper surface of the bottom portion for removably locking a rod-shaped member such as a thin tube. In this case, when taking out the bucket 16 from the mud basin part 65, the bucket 16 can be taken out from the rainwater basin 1B by connecting a thin tube to the socket and then pulling up the thin tube, thereby reducing cleaning work. It can be done easily. Note that the length of the thin tube can be adjusted as appropriate during construction, and by placing a lid on the thin tube, the bucket 16 is suppressed by the thin tube, thereby preventing the bucket 16 from floating due to water.

The embodiments of the rainwater basin and the rainwater basin construction method according to the present invention have been described above, but the present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the spirit thereof. be.
For example, as in the first modification shown in FIG. 19, it is also possible to employ a rainwater infiltration mass as the rainwater mass 1C. This rainwater tank 1C is provided with a large number of small holes 12a, 12a, . Through the large number of small holes 12a, rainwater and mud can flow out into the ground outside the rainwater tank 1C. Further, a basket 17 with a handle 18 for avoiding garbage is installed in the mud basin 12 of the rainwater basin 1C. This basket 17 has a plurality of large holes 17c formed in the upper part of the circumferential surface 17a, a plurality of small holes 17d formed in the lower part, and a drain hole 17e formed in the lower end part. It is possible to prevent clogging of the small hole 12a formed at the lower part of the hole 12a.

Further, in the present embodiment described above, the mass main body portion 10 is formed in a circular shape when viewed from above, but is not limited to such a circular cross section. For example, the rainwater basin 1D according to the second modified example shown in FIG. 20 may have a configuration in which the mass main body part 10 is formed in a semicircular arc cross section having a partially linear part 10c. In this case, since the length dimension of the rainwater basin 1D in the left-right direction in FIG. 20 can be reduced, space efficiency during installation can be improved. For example, by arranging the linear portion 10c of the rainwater basin 1D of the second modification closer to the building side, the distance between the rainwater drain pipe and the building can be reduced, making it more efficient for houses in narrow spaces. Piping can be installed well.

Further, in the present embodiment, reference lines 15A and 15B are provided on the horizontal drawing outer peripheral wall 10a of the mass body 10, but these reference lines 15A and 15B can be omitted. It is also possible to use reference lines expressed in other ways.

Note that the configurations such as the shape, size, material, etc. of the main body part 10 of the rainwater basin 1 and the mud basin part 12 are not limited to the embodiments described above, and can be set within an appropriate range. For example, in the present embodiment, the mass body portion 10 and the mud reservoir portion 12 have a cylindrical shape that is circular in top view, but other shapes such as a polygonal shape such as a quadrangular or hexagonal shape or an elliptical shape may be used. It doesn't matter if it's something.

Further, the components in the above-described embodiments can be appropriately replaced with well-known components without departing from the spirit of the present invention.

1, 1A, 1B, 1C, 1D Rainwater tank 4 Horizontal pipe 5 Hole drilling jig (hole opening means)
6A Upper member 6B Lower member 10, 60 Mass body part 10a Lateral pullout outer peripheral wall 10b Continuous part 10A Upper member 10B Lower member 11 Rising pipe socket 12, 65 Mud reservoir part 13 Insertion port 14 Water stop packing 15, 15A, 15B Reference line O Mass axis

Claims (7)

A rainwater tank connected from a building's downpipe to a horizontal pipe buried underground,
a mass main body portion having a cylindrical horizontal drawer outer peripheral wall capable of forming an insertion opening into which the end of the horizontal drawer tube is inserted;
a riser pipe socket for connecting a riser pipe to the upper end of the mass body;
a cylindrical mud reservoir provided at the lower end of the mass body;
has
The mass main body portion includes an upper connecting portion that connects from the horizontal drawer outer peripheral wall to the riser pipe socket, and a lower connecting portion that connects to the mud reservoir portion ,
The mass main body portion is formed of an upper member including the outer circumferential wall of the horizontal drawer, and a lower member including a protruding edge into which the lower end of the upper member fits,
The outer diameter of the horizontal pullout outer peripheral wall and the outer diameter of the projecting edge are larger than the outer diameter of the riser pipe socket and the outer diameter of the mud reservoir.
A rainwater mass that is characterized by A rainwater tank connected from a building's downpipe to a horizontal pipe buried underground,
a mass main body portion having a cylindrical horizontal drawer outer peripheral wall capable of forming an insertion opening into which the end of the horizontal drawer tube is inserted;
a riser pipe socket for connecting a riser pipe to the upper end of the mass body;
a cylindrical mud reservoir provided at the lower end of the mass body;
has
The mass main body portion includes an upper connecting portion that connects from the horizontal drawer outer peripheral wall to the riser pipe socket, and a lower connecting portion that connects to the mud reservoir portion,
A stopper is provided inside the outer edge of the upper connecting part or the lower connecting part and at the lower part of the riser pipe socket,
A rainwater basin characterized in that an inner diameter of the stopper is larger than an inner diameter of the mud basin . A rainwater tank connected from a building's downpipe to a horizontal pipe buried underground,
a mass main body portion having a cylindrical horizontal drawer outer peripheral wall capable of forming an insertion opening into which the end of the horizontal drawer tube is inserted;
a riser pipe socket for connecting a riser pipe to the upper end of the mass body;
a cylindrical mud reservoir provided at the lower end of the mass body;
has
The mass main body portion includes an upper connecting portion that connects from the horizontal drawer outer peripheral wall to the riser pipe socket, and a lower connecting portion that connects to the mud reservoir portion,
The lower connecting part is
an inclined surface extending from the upper end of the mud reservoir toward the outer circumferential side of the mass main body at an angle with respect to the mass axis of the mass main body; or from the upper end of the mud reservoir to the outer circumferential side of the mass main body having a plane extending perpendicularly to the mass axis of the mass body toward the
the inclined surface or the flat surface is at the same height in the direction of the mass axis;
The upper end of the riser pipe socket is in contact with the inclined surface or the flat surface when the rainwater cells are stacked,
A rainwater basin characterized in that an outer diameter of the riser pipe inlet is larger than an inner diameter of the mud basin . A rainwater tank connected from a building's downpipe to a horizontal pipe buried underground,
a mass main body portion having a cylindrical horizontal drawer outer peripheral wall capable of forming an insertion opening into which the end of the horizontal drawer tube is inserted;
a riser pipe socket for connecting a riser pipe to the upper end of the mass body;
a cylindrical mud reservoir provided at the lower end of the mass body;
has
The mass main body portion includes an upper connecting portion that connects from the horizontal drawer outer peripheral wall to the riser pipe socket, and a lower connecting portion that connects to the mud reservoir portion,
The horizontal pullout outer peripheral wall has a plurality of alignment holes arranged on the same straight line along the mass axis direction and corresponding to hole diameters formed in the horizontal pullout outer peripheral wall,
A plurality of the alignment holes are provided in a circumferential direction of the horizontal drawing outer peripheral wall,
A rainwater basin characterized in that a stopper is provided inside the outer edge of the upper connecting part or the lower connecting part and below the riser pipe socket . A rainwater tank connected from a building's downpipe to a horizontal pipe buried underground,
a mass main body portion having a cylindrical horizontal drawer outer peripheral wall capable of forming an insertion opening into which the end of the horizontal drawer tube is inserted;
a riser pipe socket for connecting a riser pipe to the upper end of the mass body;
a cylindrical mud reservoir provided at the lower end of the mass body;
has
The mass main body portion includes an upper connecting portion that connects from the horizontal drawer outer peripheral wall to the riser pipe socket, and a lower connecting portion that connects to the mud reservoir portion,
The upper connecting part and the lower connecting part each have a reinforcing rib,
When the rainwater cells are stacked one above the other, the upper end of the riser pipe socket of the upper rainwater cell comes into contact with the reinforcing rib of the lower rainwater cell.
A rainwater mass that is characterized by A method for constructing a rainwater basin in which the horizontal pipe is connected to the rainwater basin according to any one of claims 1 to 5 ,
forming the insertion opening having a predetermined outer diameter by penetrating the outer circumferential wall of the horizontal drawer using a hole opening means at an arbitrary position of the outer circumferential wall of the horizontal drawer of the mass body;
a step of inserting the horizontal draw pipe into the insertion port to the inside of the mass body;
A method of constructing a rainwater basin characterized by having the following features. 7. The rainwater according to claim 6 , wherein the horizontal draw pipe is inserted into the insertion port such that an insertion end of the horizontal draw pipe is located radially outside an upper opening edge of the mud basin. Mass construction method.

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