JP2022052472A - Drain pipe cover and rainwater drain structure - Google Patents

Abstract

To provide a drain pipe cover which prevents rainwater from overflowing from a gap between a down pipe and the drain pipe cover, and which can drain water efficiently.SOLUTION: A drain pipe cover 60 connects a down pipe 46 and an underground buried pipeline 65 buried underground, and the drain pipe cover is provided with a hole 63 for overflow.SELECTED DRAWING: Figure 4

Description

The present invention relates to a drainage pipe cover with an overflow function.

Traditionally, gutters have been used in buildings to drain rainwater. The gutter transports the rainwater that has fallen on the roof of the building to the drainage pipe on the ground. The transported rainwater is drained underground through a drainage pipe. A drainage pipe cover is provided between the gutter and the drainage pipe. The drainage pipe cover connects the gutter and the drainage pipe while slidably supporting the lower end of the gutter in the vertical direction in order to absorb displacement and deformation due to thermal expansion and contraction of the gutter. (See Patent Document 1).

Japanese Unexamined Patent Publication No. 2012-144870

However, during heavy rain, the drainage capacity of the drainage pipe is insufficient, and the problem is that water overflows from between the gutter and the drainage pipe cover to the ground. Since the drainage pipe cover has a function of expansion and contraction processing, it cannot be adhered, and a gap is created between the drainage pipe cover and the gutter. Therefore, when the drainage capacity becomes insufficient during heavy rain, water overflows from the above-mentioned gap, and efficient drainage cannot be performed.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a drainage pipe cover capable of preventing rainwater from overflowing between a gutter and a drainage pipe cover and draining efficiently. And.

In order to solve the above problems, the present invention proposes the following means.
The drainage pipe cover according to the present invention is a drainage pipe cover that connects a gutter and an underground pipe buried underground, and is provided with a hole for overflow.

According to the present invention, by providing the drainage pipe cover with a hole for overflow, when rainwater falling on the building is about to overflow between the gutter and the drainage pipe cover, it flows out from the hole for overflow. .. Therefore, it is possible to prevent rainwater from overflowing between the gutter and the drainage pipe cover, and to drain water efficiently.

Further, the drainage pipe cover is provided with a first connection port for inserting the gutter, a second connection port for inserting into the underground buried pipe, and a cover portion for covering the underground buried pipe. 2 The hole may be provided in the connection port.

According to the present invention, when the drainage capacity of the drainage pipe is insufficient and the drainage flows backward during heavy rain or the like, the drainage is performed from the hole provided in the second connection port, so that the first connection between the gutter and the drainage pipe cover is performed. It is possible to prevent water from overflowing between the mouth and the mouth.
Further, by preventing the overflow of water as described above, it is possible not only to prevent the inundation of the building but also to prevent the landscape of the building from being disturbed by the overflowing water.

Further, it may be a rainwater drainage structure including a gutter, an underground pipe buried underground, and the drainage pipe cover.
According to the present invention, the drainage pipe cover connects the gutter attached to the building and expands and contracts depending on the temperature and the like and the pipe buried in the ground so as not to be affected by the expansion and contraction of the gutter. With such a connection, rainwater collected on the roof of the building can be efficiently transported to the underground drainage pipe.

According to the present invention, it is possible to prevent rainwater from overflowing between the gutter and the drainage pipe cover, and to drain water efficiently.

It is a side view of a part of the rainwater drainage structure provided with the piping structure of one embodiment of the present invention. It is sectional drawing of the rainwater drainage structure shown in FIG. It is a perspective view of the drainage pipe cover shown in FIG. It is a schematic diagram which drainage is made in the rainwater drainage structure shown in FIG.

Hereinafter, the drainage pipe cover and the rainwater drainage structure according to the embodiment of the present invention will be described with reference to the drawings. The drawings used in the following description are schematic.

FIG. 1 is a side view of a part of the rain gutter system 2 provided with the rainwater drainage structure 45A including the drainage pipe cover 60 of the present invention. As shown in FIG. 1, the rain gutter system 2 includes an eaves gutter 10, a first connection joint 20, a nominal gutter 30, a second connection joint 35, and a rainwater drainage structure 45A. The downstream side of the rainwater drainage structure 45A is connected to the underground catchment mass 69.

The rainwater that has flowed into the eaves gutter 10 flows down the middle space of the first connecting joint 20, the calling gutter 30, the second connecting joint 35, and the rainwater drainage structure 45A. The rainwater discharged and collected in the catchment mass 69 is drained from the drainage pipe 70 connected to the catchment mass 69 to a drainage facility (not shown).

FIG. 2 is a cross-sectional view showing the rainwater drainage structure 45A. As shown in FIG. 2, the rainwater drainage structure 45A includes a gutter 46, a drainage pipe cover 60, and an underground pipe 65.
The gutter 46 extends along the vertical direction Z. The upper end portion of the downspout 46 is inserted into the second connecting portion 38 of the second connecting joint 35. That is, the second connecting joint 35 is connected to the upper end portion of the downspout 46. The gutter 30 is connected to the gutter 46 via a second connecting joint 35.
The inner diameter of the downspout 46 is 65 mm (nominal diameter is 65 mm or more) or more. The inner diameter of the downspout 46 is preferably 75 mm or more, and more preferably 98 mm or more. It is preferable that the inner diameter of the nominal gutter 30 is the same as the inner diameter of the downspout 46.

The drainage pipe cover 60 is provided between the gutter 46 and the underground pipe 65 in the rainwater drainage structure 45A. As shown in FIG. 3, the drain pipe cover 60 has a first connection port (receptacle) 61 into which the gutter 46 is inserted, a second connection port (insertion port) 62 to be inserted into the underground buried pipe 65, and a second. An overflow hole 63 provided on the side surface of the connection port 62 and a cover portion 64 for covering the underground pipe are provided.

The first connection port 61 is connected to the downspout 46. The gutter 46 is inserted into the first connection port 61. The downspout 46 may expand or contract depending on the temperature of the installation site or the like. In order to absorb the deformation allowance, the gutter 46 and the first connection port 61 are not fixed by adhesion or the like, and the inner diameter of the first connection port 61 has a margin with respect to the outer diameter of the gutter 46. , Connect only by inserting. The insertion allowance of the downspout 46 into the first connection port 61 shall be 150 mm or more. The first connection port 61 has a square tubular shape.

The second connection port 62 is connected to the underground pipe 65. The second connection port 62 is inserted into the underground pipe 65. The rainwater flowing down from the gutter 46 flows down in the inner space of the drainage pipe cover 60, and flows down to the underground pipe 65 through the second connection port 62. The second connection port 62 has a cylindrical shape.
Since the overflow hole 63 described later is provided on the side surface of the second connection port 62, the insertion allowance is set so that the inner wall of the underground buried pipe 65 and the overflow hole 63 described later do not interfere with each other.

The overflow hole 63 is a hole provided on the side surface of the columnar portion of the second connection port 62. As shown in FIG. 3, a plurality of overflow holes 63 are provided in a rectangular shape along the side surface of the columnar portion of the second connection port 62 in the circumferential direction.
Further, the overflow hole 63 is located closer to the first connection port 61 than the center in the axial direction of the second connection port so as not to interfere with the underground buried pipe 65. Moreover, the lower end portion of the overflow hole 63 in the axial direction is located above the upper end portion of the underground pipe 65.
As shown in FIG. 4, the overflow hole 63 has a function of allowing the drainage 90 that did not completely flow into the underground pipe 65 during heavy rain or the like to escape from the inner space of the drainage pipe cover 60 and escape to the outside as drainage 91. ..

As shown in FIG. 2 or 4, the cover portion 64 is provided so as to cover the second connection port 62 and the overflow hole 63 on the ground side.
The upper end of the cover portion 64 is located between the first connection port 61 and the second connection port 62, and extends horizontally from the outer peripheral surfaces of the first connection port and the second connection port to the outside in the axial direction.
The lower end of the cover portion 64 extends axially from the edge of the upper end to the lower end of the second connection port 62 and covers the second connection port 62. Further, the lower end of the cover portion 64 is located above the lower end of the second connection port 62 in the axial direction, and is located below the ground in the vertical direction Z.
With such a shape, the escape drainage 91 that has flowed out from the overflow hole 63 is prevented from spreading to the ground.

The underground pipe 65 is connected to the lower end portion (second connection port 62) of the drainage pipe cover 60. The underground pipe 65 is a pipe buried underground. The underground pipe 65 includes a first elbow 66, a connecting pipe 67, and a second elbow 68.
The connecting pipe 67 is arranged in the ground along a horizontal plane. The first elbow 66 connects the lower end of the drainage pipe cover 60 and the first end of the connecting pipe 67. The second elbow 68 is connected to the second end of the connecting pipe 67. The end of the second elbow 68 opposite to the end connected to the connecting pipe 67 faces downward. The second end of the connecting pipe 67 and the second elbow 68 are arranged in the catchment mass 69 buried in the ground. A drainage pipe 70 is connected to the catchment mass 69.

Further, the first connecting joint 20, the nominal gutter 30, the second connecting joint 35, the downspout 46, and the drain pipe cover 60 are formed by extruding and injection molding a resin such as vinyl chloride.

As described above, when the drainage pipe cover 60 of the present embodiment is provided with a hole 63 for overflow, rainwater falling on the building is about to overflow between the gutter 46 and the drainage pipe cover 60. In addition, it flows out from the overflow hole 63. Therefore, it is possible to prevent rainwater from overflowing between the gutter 46 and the drain pipe cover 60, and to drain water efficiently.

Further, when the drainage 90 flows backward due to insufficient drainage capacity of the underground pipe 65 during heavy rain or the like, drainage is performed from the overflow hole 63 provided in the second connection port 62 to drain the gutter 46 and drainage. It is possible to prevent water from overflowing from between the pipe cover 60 and the first connection port 61.
Further, by preventing the overflow of water as described above, it is possible not only to prevent the inundation of the building but also to prevent the landscape of the building from being disturbed by the overflowing water.

Further, the drainage pipe cover 60 connects the gutter 46, which is attached to the building and expands and contracts depending on the temperature and the like, and the underground pipe 65 so as not to be affected by the expansion and contraction of the gutter 46. With such a connection, rainwater collected on the roof of the building can be efficiently transported to the underground drainage pipe 70.

The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, the cross-sectional shape of the second connection port 62 in the flow direction of the drainage may be circular or other polygonal shape according to the shape of the gutter 46. With such a shape, it is possible to prevent an extra gap from being generated as compared with the case where the gutter 46 and the second connection port 62 have different cross-sectional shapes. In addition, it is possible to prevent the appearance from being inconsistent due to the different shapes and improve the aesthetic appearance.

Further, if the insertion allowance for the downspout 46 can be secured, a curved pipe portion or a horizontal portion may be provided between the cover portion 64 and the cover portion 64. With such a shape, when the positions of the gutter 46 and the underground pipe 65 are different, the shape of the drainage pipe cover 60 can be used to compensate.

Further, the overflow hole 63 may have a circular shape or another polygonal shape instead of a rectangular hole. With such a shape, it is possible to give more strength to the second connection port 62 when bending strength is required as compared with the case of a rectangle.

Further, the second connection port 62 may be larger than the outer shape of the underground buried pipe 65 (the second connection port 62 may be a receiving port of the underground buried pipe 65). With such a shape, in addition to the effect of allowing the drainage through the overflow hole 63 to escape, the drainage can be further escaped from the gap between the second connection port 62 and the underground pipe 65.

In addition, it is appropriately possible to replace the constituent elements in the above-described embodiment with well-known constituent elements without departing from the spirit of the present invention, and the above-mentioned modifications may be appropriately combined.

45A Rainwater drainage structure 46 Vertical gutter 60 Drainage pipe cover 61 1st connection port 62 2nd connection port 63 Overflow hole 64 Cover part 65 Underground piping

Claims (3)

It is a drainage pipe cover that connects the gutter and the underground pipe buried underground.
There is a hole for overflow,
Drain pipe cover. The first connection port connected to the gutter and
The second connection port connected to the underground pipe and
The cover part that covers the underground pipe and
Equipped with
The hole is provided in the second connection port.
The drainage pipe cover according to claim 1. With a gutter,
Underground pipes buried underground and
The drainage pipe cover according to claim 1 or 2,
It features a rainwater drainage structure.

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