JP5321407B2 - Downstream overflow structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an overflow structure 1 of a vertical gutter, which can be set even if there is a small height difference between the floor face 5 of a flat roof, a balcony or an eave and the indoor floor face, can be also set to an existing facility quite simply and can drain water even when a rainwater catch basin 9 is flooded with water. <P>SOLUTION: The overflow structure 1 is provided to the vertical gutter 8 allowing water to drop from the flat roof, balcony or eave of a building. A branch pipe 15a draining water outside the vertical gutter 8 is provided at a position lower than at least the roof floor of the vertical gutter 8 or the lowest position of the balcony and a position higher than an expected water flood level. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an overflow structure of a vertical gutter provided on a vertical roof that allows water to flow down from a flat roof, a balcony, or a gutter of a building.

  In order to drain water such as rainwater from a flat roof, a balcony or a fence, a drain entrance is provided at the lowest position of the floor by slightly tilting the flat roof, balcony, or fence, and from the drain entrance to the site. A vertical gutter is arranged up to the rain gutter provided in the water and the water is led to the rain gutter.

  In such a drainage structure, in addition, in many cases, an overflow device is installed in preparation for a case where foreign matter becomes clogged at the drain receiving port or the like and water cannot be discharged. Especially in recent years, when the rainfall is extremely heavy, such as so-called guerrilla heavy rain, the drainage capacity of the vertical gutter is drastically reduced, and the water collected on the flat roof, balcony, or gutter. Therefore, overflow devices are becoming important.

  As this overflow device, for example, as shown in Patent Document 1, an overflow hole is formed so as to penetrate the parapet above the floor surface of a balcony or the like, and an overflow pipe is connected. As shown in the figure, a drainage basin is provided at one end of the ridge part of the floorboard of the balcony, the drainage basin is projected from the handrail part of the balcony, and a vertical gutter is provided below the drainage basin, and the water collection One having an overflow hole formed on the side surface of the bag is mentioned.

  By providing such an overflow device, even if foreign matter is clogged in the drain inlet or the like, water does not accumulate on the rooftop or balcony up to a higher water level than the overflow device, and water leaks indoors from the sash. There is no fear.

JP 2001-279806 A JP 2000-282634 A

  However, since the overflow devices described in Patent Document 1 and Patent Document 2 both need to provide an overflow hole at a position higher than the floor surface of the balcony, for example, a flat roof, a flat roof, a balcony, Or, when there is little difference in height between the upper surface of the fence and the indoor floor surface, it is often difficult to install. Moreover, since it will penetrate a parapet, it is not easy to install additionally on a land roof, a balcony, or a fence already installed.

  Therefore, the present invention can be installed even when there is little difference in level between the upper surface of the flat roof, balcony, or fence and the indoor floor surface, and can also be installed very easily in existing facilities. An object of the present invention is to provide a vertical gutter overflow structure that can drain water even when a gutter is submerged.

The overflow structure of a downspout according to claim 1 is a downflow structure of a downspout provided in a downspout that allows water received by a drain opening provided on the roof of a building, a balcony, or the top of the reed to flow down. The vertical gutter is constructed by connecting an upper gutter and a lower gutter which can be separated into upper and lower parts by a vertical pipe, and the lower end of the lower gutter is buried in the ground and communicates with a rainwater gutter, at least the flat roof of downpipe, the balcony, or lower than the lowest position of the upper surface of the eaves, and, in a position higher than the expected flood water level, the overflow portion is provided to discharge water to the outside of the downpipe The overflow part is a branch pipe having one end communicating with the vertical pipe and the other end opening upward .

  The “expected flood level” is a level that is highly likely to be flooded in the case of heavy rain as expected from topography, regional drainage facilities, past precipitation, etc., and can be set arbitrarily in advance. it can.

According to the overflow structure of the downspout according to claim 1, since the overflow portion is provided at a position lower than the lowest position of the upper surface of the downspout, the balcony, or the downside of the downspout, the rainwater trough with which the downspout communicates Even when the drainage capacity of the vertical gutter is reduced, such as when it is submerged, draining water from the overflow section prevents water from accumulating on the flat roof, balcony, or gutter, and passes through the sash. , Can prevent water from entering indoors. Moreover, since this overflow part is provided in the position higher than an expected flood level, even if it floods to a predetermined level by heavy rain, it can continue draining water. Furthermore, according to the overflow structure of the downspout, even in existing facilities, it is only necessary to provide an overflow section in the middle section of the downspout, and it is not necessary to penetrate the parapet, so that it can be installed very easily. And since the overflow part is a branch pipe with one end communicating with the inside of the vertical shaft and the other end opened upward, it is possible to suppress water from flowing down the vertical wall and overflowing to the outside during normal times. If the drainage capacity of the vertical gutter is reduced due to the flooding of rainwater tanks, etc., this water is discharged from the branch pipe to the outside, so that water can be prevented from accumulating on the rooftop or balcony, and through the sash , Can prevent water from entering indoors.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a simplified cross-sectional view showing a downside overflow structure of a first embodiment and a partially enlarged view thereof. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a simplified cross-sectional view and a partially enlarged view for explaining the operation of an upright overflow structure according to a first embodiment when a rainwater tank is submerged. The simplified sectional view showing the overflow structure of the downspout of the second embodiment. The perspective view explaining the fitting rod of the overflow structure of the vertical hook of 2nd Embodiment. The perspective view explaining the overflow structure of the downspread of 2nd Embodiment. The simplified sectional view explaining the operation of the overflow structure of the vertical wall of the second embodiment when the rainwater tank is submerged. The simplified sectional view showing other embodiments of the down flow overflow structure of a 2nd embodiment. The c partial enlarged view of FIG. The simplified sectional view showing the overflow structure of the downside of the third embodiment. The d partial enlarged view of FIG. Simplified sectional drawing explaining the effect | action of the overflow structure of the vertical wall of 3rd Embodiment when a rainwater tank is flooded.

[First Embodiment]
Hereinafter, a first embodiment of a downside overflow structure 1 according to the present invention will be described with reference to FIGS. 1 and 2. A vertical wall overflow structure 1 according to this embodiment is installed in a drainage drain device 3 provided on a roof balcony 2 of a building 11 such as a house, for example. The drainage drain device 3 may be provided on a roof such as a flat roof, or may be provided on a fence. As shown in FIG. 1 (A), the roof balcony 2 is provided with a slightly inclined floor 5 for smooth drainage, and a drain port for receiving drainage at the lowest part of the floor 5. 4 is provided. Although not shown, the drain port 4 is provided with a strainer that scavenges foreign matters such as fallen leaves and dust. A drain pipe 6 that allows the drainage to flow downward from the drain port 4 communicates therewith, and the drain pipe 6 is formed so as to protrude outdoors through the curved portion 7. The drain pipe 6 projecting outdoors communicates with a vertical shaft 8 extending in the vertical direction.

  The vertical gutter 8 is a resin cylindrical gutter whose upper end communicates with the drain pipe 6 and whose lower end is buried in the ground and communicates with the rain gutter 9, and allows water such as rain water to flow inside. . Note that the vertical rod 8 may be, for example, a cylindrical round rod or a substantially rectangular column-shaped square rod. Then, at a position lower than at least the lowest position of the floor surface 5 of the roof balcony 2 of the vertical shaft 8 and higher than an expected flooding level when the flooding is caused by a heavy rain, etc. As shown to B), the overflow port 10 which can discharge | emit the water which flows through the inside of the downpipe 8 to the exterior is provided. For example, the overflow port 10 can be formed to have substantially the same size as the inner diameter of the vertical rod 8, but is not limited thereto, and may be a plurality of smaller openings.

  Since the vertical gutter 8 is formed to extend substantially in the vertical direction, even if a part of the side surface is opened to form the overflow port 10, the water flowing down in the vertical gutter 8 does not leak to the outside in normal times. Almost no. The overflow port 10 is formed on the side surface of the vertical gutter 8 on the side of the building 11 so that it is regulated by the outer wall 12 of the building 11 and water splashes flowing down in the vertical gutter 8 slightly leak to the outside. Although it is possible to suppress inadvertent scattering even when it comes out, if there is no problem even if the place where the splashing splashes gets wet, the position of the overflow port 10 may be opened toward the outdoor side, for example. .

  Then, for example, when the rainwater tank 9 connected to the vertical shaft 8 is flooded due to, for example, torrential rain, and it becomes difficult to drain the drainage water from the vertical shaft 8 to the rainwater tank 9, as shown in FIG. The water level rises and reaches the height of the overflow port 10. Then, water exceeding the water level of the overflow port 10 overflows to the outside through the overflow port 10. Therefore, since the water level stored in the downpipe 8 does not become higher than the overflow port 10, it is possible to prevent water from collecting on the balcony 2, and the water from the balcony 2 through the sash (not shown) to the water indoors. Can be prevented from entering.

[Second Embodiment]
Next, a second embodiment of the vertical overflow structure 1 according to the present invention will be described with reference to FIGS. In addition, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. The vertical rod 8 of this embodiment is configured to be vertically separated into an upper rod 81 and a lower rod 82, and the upper rod 81 and the lower rod 82 are joined together by a rod 13. As shown in FIG. 3, the mating rod 13 is at least lower than the lowest position of the floor surface 5 of the roof balcony 2 and flooded due to torrential rain, etc., similarly to the overflow port 10 of the first embodiment. In such a case, it is disposed at a position higher than the expected flood level.

  As shown in FIG. 4, the mating rod 13 includes a vertical pipe 14 that extends in the vertical direction, and a branch pipe 15 a that protrudes from a side surface of the vertical pipe 14 and is bent upward to be opened. When constructing the overflow structure 1 of the vertical rod, as shown in FIG. 5, the upper rod 81 communicates with the upper end of the vertical tube 14, the lower rod 82 communicates with the lower end of the vertical tube 14, and the branch tube 15a is opened as it is. Since the vertical overflow structure 1 of this embodiment is configured in this way, the branch pipe 15a is bent upward even when splashes of water flowing down in the vertical pipe 8 scatter to the side of the branch pipe 15a. Therefore, there is no risk of splashes leaking outside.

  Then, for example, when the rainwater tank 9 communicated with the vertical shaft 8 is flooded due to concentrated heavy rain and the drainage from the vertical shaft 8 to the rainwater tank 9 becomes difficult, as shown in FIG. The water level rises and reaches the pool 13. And the water of a higher water level than the opening of the branch pipe 15a of the mating tub 13 overflows outside through the branch pipe 15a. Accordingly, since the water level stored in the downpipe 8 does not become higher than the branch pipe 15a, it is possible to prevent water from accumulating on the balcony 2, and indoors from the balcony 2 through a sash (not shown). Water can be prevented from entering.

  As described above, in this embodiment, the branch pipe 15a of the mating rod 13 is used as the vertical rod overflow structure 1 by using the conventional mating rod 13 for connecting the upper rod 81 and the lower rod 82. Therefore, it is possible to form the vertical overflow structure 1 very easily without newly manufacturing a dedicated part.

  In the present embodiment, the vertical saddle overflow structure 1 is formed by using the alignment rod 13, but the present invention is not limited to this. For example, as shown in FIGS. 7 and 8, a Y tube 16 is used. It is good also as a structure. As shown in FIG. 8, the Y tube 16 includes a vertical tube 14 that extends in the vertical direction, and a branch tube 15 b that protrudes obliquely upward from the side surface of the vertical tube 14. And when constructing the overflow structure 1 of the vertical shaft, the upper rod 81 is communicated with the upper end of the vertical tube 14, the lower rod 82 is communicated with the lower end of the vertical tube 14, and the branch tube 15b is opened as it is. . In this way, the branch pipe 15b is inclined and protrudes upward, so that even if the water droplets flowing down in the vertical rod 8 scatter to the side of the branch pipe 15b in the normal state, there is no possibility that the splash leaks to the outside. On the other hand, when the rainwater tank 9 is submerged, the water level in the vertical shaft 8 rises, and the water at a higher water level through the branch pipe 15b of the Y pipe 16 passes through the branch pipe 15b to the outside. Since the water overflows, the water level stored in the vertical shaft 8 does not become higher than the branch pipe 15b, and it is possible to prevent water from collecting on the balcony 2, and indoors through the sash (not shown) from the balcony 2. It is possible to prevent water from entering the water.

[Third Embodiment]
Next, a third embodiment of the downside overflow structure 1 according to the present invention will be described with reference to FIGS. In addition, about the structure similar to 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. As shown in FIG. 9, the overflow structure 1 of the downside of the present embodiment is configured to allow drainage from the balcony 2 in which the end portion of the drain pipe 6 protruding to the outside is formed on the side surface of the downside 8. It communicates with the introduction port 17 to be introduced into. The vertical gutter 8 protrudes slightly above the introduction port 17, and an upper end is disposed slightly below the lowest position of the floor surface 5 of the balcony 2 to form an opening 18. Then, as shown in FIG. 10, the opening 18 at the upper end of the vertical rod 8 is covered with a net portion 19 made of, for example, metal in order to prevent foreign matters such as dead leaves and dust from entering the vertical rod 8. It has been broken.

  Under normal circumstances, the water that has flowed from the drain pipe 6 through the introduction port 17 into the vertical shaft 8 flows downward, so there is no risk of water leaking from the upper end of the vertical shaft 8. Then, for example, when the rainwater tank 9 communicated with the vertical shaft 8 is flooded due to concentrated heavy rain and the drainage from the vertical shaft 8 to the rainwater tank 9 becomes difficult, as shown in FIG. The water level rises and reaches the opening 18 at the upper end of the downpipe 8. Further, the inflowing water overflows from the upper end of the downpipe 8 to the outside. Therefore, water can be prevented from accumulating on the balcony 2, and water can be prevented from entering the interior of the balcony 2 through a sash (not shown).

  Needless to say, the embodiment of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the idea of the present invention.

  The downside overflow structure 1 of the present embodiment can be suitably used as the downside overflow structure 1 for preventing water from being stored in a flat roof, a roof balcony 2 or the like.

1 Overflow structure of downpipe 2 Balcony 8 Downpipe 10 Overflow port (overflow part)
15a, 15b Branch pipe (overflow part)
17 Introduction part 18 Opening part (overflow part)
19 Net

Claims (1)

An overflow structure of a vertical gutter provided in a vertical gutter that allows water received by a drain opening provided on the roof of a building, a balcony, or the top of the gutter to flow down,
The vertical gutter is constructed by connecting an upper gutter and a lower gutter, which can be separated into upper and lower, by a vertical pipe, and the lower end of the lower gutter is buried in the ground and communicates with a rainwater gutter,
An overflow part for discharging water to the outside of the downspout is provided at a position lower than the lowest position of the upper surface of the downspout, the balcony, or the top of the downspout and higher than the expected flood level. And
The overflow part is a vertical pipe overflow structure characterized in that one end communicates with the vertical pipe and the other end is a branch pipe that opens upward.

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