JP2018104961A - Drain pipe cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain pipe cover capable of suppressing water wetting and contamination of a building outer wall by preventing rainwater from a drain pipe from flowing back, and further suppressing a downpipe from falling from the drain pipe cover or breaking owing to heat shrinkage or thermal expansion.SOLUTION: A drain pipe cover consists of two members, i.e., a lower member 4 having a cylindrical part 6 on an upper end side and a drain pipe housing part 7 housed in a pipe of a drain pipe 3 on a lower end side, and an upper member 5 having a cylindrical upper end opening part 8 opposed to an outer peripheral surface of a downpipe 2, a tapered surface 9a inclined outward from a lower end part of the upper opening part 8, and a cover part 9 formed of a vertical plane 9b drooping from a lower end of the tapered surface 9a. A lower end of the cover part 9 of the upper member 5 is larger than the diameter of an upper end of the cylindrical part 6 of the lower member 4, and the cylindrical part 6 of the lower member 4 is covered with the cover part 9 of the upper member 5, and a lower end inner peripheral edge part of the cover part 9 of the upper member 5 and an outer peripheral surface of the cylindrical part 6 of the lower member 4 are arranged apart from each other between the upper member 5 and lower member 4 so as to form an opening part 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drain pipe cover.

  Usually, rainwater is collected in eaves and drained into drainage pipes buried in the ground through eaves. A gutter is attached to the outer wall of a building using a gutter holder, and a lower end portion of the gutter is connected to a rising portion of a drain pipe buried in the ground via a cylindrical drain pipe cover. More specifically, the upper end of the drain pipe cover is extrapolated to the lower end of the tub, and the lower end of the drain pipe cover is inserted into the rising portion of the drain pipe.

  With regard to such a drain pipe cover, there has been a concern that the lower end of the drain pipe cover may be detached from the upper end of the drain pipe cover due to the shrinkage, expansion, side shake, etc. of the kite due to the influence of temperature and wind and rain. It was. Therefore, various studies have been made so far, and for example, drainage pipe covers such as Patent Documents 1 and 2 have been proposed.

  As shown in FIGS. 4A and 4B, the drain pipe cover 41 of Patent Document 1 is divided into a cover main body 41a and an attachment 41b. A flange 42 can be inserted into the inner surface of the cover body 41a. In the attachment 41b, the cover body 41a can be inserted into the upper end opening 411, and the inner tube 43 is inserted into the lower end opening 412. It is supported and has a double tube structure. A drain pipe 44 can be inserted into the gap of the double pipe structure.

  In such a drain pipe cover 41, the ridge 42 is not bent or detached due to thermal expansion, and the maintenance inspection is easy.

  5, the drain pipe cover 51 of Patent Document 2 includes a drain pipe cover main body 51a and an adapter 51b. A tapered short cylindrical adapter 51b is formed in the rising portion 52a of the drain pipe 52. The insertion slot 511 is inserted and placed. And it arrange | positions so that the lower end part of the cylindrical part 513 of the drain pipe cover main body 51a may be located in the receptacle 512 of the adapter 51b, and the collar 53 and the drain pipe 52 are connected.

  In such a drain pipe cover 51, even if the axial center of the drain pipe 52 and the axial center of the flange 53 are slightly deviated, the misalignment of the axial center is absorbed and the drain 53 and the drain pipe 52 are easily connected. In addition, it is said that the appearance after installation is not impaired.

Japanese Patent Laid-Open No. 9-296577 JP-A-8-284344

  On the other hand, in the connection structure of eaves, dredging, and drainage pipes, if a large amount of rainwater flows into the drainage pipe in a short time, like guerrilla heavy rain, which has been increasing recently, the drainage performance of the drainage pipe Exceeding has to be considered. This is because the rainwater that can no longer be drained from the drainage pipe flows back to the eaves and the eaves and overflows, causing wetness and dirt on the outer wall of the building.

  However, in the drainage pipe covers of Patent Documents 1 and 2, it has not been considered enough about the backflow of rainwater to the eaves and the eaves and the countermeasures against water wetting and dirt on the outer wall of the building. .

  The present invention has been made in view of the circumstances as described above, and can prevent backflow of rainwater from the drain pipe to suppress water wetting and dirt on the outer wall of the building, and also due to thermal contraction and thermal expansion. An object of the present invention is to provide a drain pipe cover that can suppress the drop-off or breakage of the soot from the drain pipe cover.

In order to solve the above-mentioned problem, the present invention is a drain pipe cover that is attached to the lower end of the ridge and the rising end of the drain pipe buried in the ground,
A lower part having a cylindrical part on the upper end side and a drain pipe storage part stored in the pipe of the drain pipe on the lower end side;
It is comprised from the cylindrical upper end opening which opposes the outer peripheral surface of the said collar, the taper surface which inclines outward from the lower end part of this upper end opening part, and the vertical surface which hangs down from the lower end of this taper surface It consists of two members with an upper member having a cover part,
A lower end of the cover part of the upper member is larger than a diameter of an upper end of the cylindrical part of the lower member, and the cylindrical part of the lower member is covered by the cover part of the upper member, An opening is formed between the lower member and an inner peripheral edge of a lower end of the cover portion of the upper member and an outer peripheral surface of the cylindrical portion of the lower member that are spaced apart from each other. Have

  According to the drain pipe cover of the present invention, the backflow of rainwater from the drain pipe can be prevented to suppress water wetting and dirt on the outer wall of the building, and the drought from the drain pipe cover due to thermal contraction and thermal expansion can be suppressed. Omission and damage can be suppressed.

It is the schematic sectional drawing which showed typically one Embodiment of the drain pipe cover of this invention. It is the schematic sectional drawing which showed typically another embodiment of the drain pipe cover of this invention. It is A-A 'sectional drawing of FIG. (A) It is the schematic sectional drawing which showed the conventional drain pipe cover described in patent document 1 typically. (B) is the schematic sectional drawing which showed the installation state of (A). It is the schematic sectional drawing which showed the conventional drain pipe cover described in patent document 2 typically.

  The drain pipe cover of the present invention will be described in detail below with reference to the drawings.

  In the present specification, the “diameter” is the longest of the diameters such as the inner diameter and outer diameter of a tubular structure such as a round basket, and the passing length of opposite sides of an annular structure such as a square basket. Means things.

  FIG. 1 is a schematic cross-sectional view schematically showing an embodiment of a drain pipe cover of the present invention.

The drain pipe cover 1 is attached to the outside of the connection portion between the lower end portion of the gutter 2 and the rising end portion 31 of the drain pipe 3 embedded in the underground G. The lower member 4 and the upper member 5 are two members. The lower member 4 includes a cylindrical portion 6 on the upper end side and a drain pipe storage portion 7 that is stored in the drain pipe 3 on the lower end side. The upper member 5 includes a cylindrical upper end opening 8 that faces the outer peripheral surface of the flange 2, a tapered surface 9a that inclines outward from the lower end of the upper end opening 8, and a lower end of the tapered surface 9a. And a cover portion 9 composed of a vertical surface 9b that hangs down further. The lower end of the cover portion 9 of the upper member 5 is larger than the diameter of the upper end of the tubular portion 6 of the lower member 4, and the tubular portion 6 of the lower member 4 is covered by the cover portion of the upper member 5. Then, between the upper member 5 and the lower member 4, the inner peripheral edge of the lower end of the cover portion 9 of the upper member 5 and the outer peripheral surface of the cylindrical portion 6 of the lower member 4 are spaced apart to form the opening 10. The firewood 2 can be used without particular limitation as long as it has been used in a conventional building or the like, for example, a round firewood whose cross-sectional shape in the short direction is circular, or a cross-sectional shape Examples include squares and polygons.

  The material of the casket 2 can be used without particular limitation as long as it is conventionally used in buildings and the like. For example, a tube made of synthetic resin such as a hard polyvinyl chloride tube is preferably used. It is done. When the gutter 2 is a round gutter, it is generally considered preferable to use hard polyvinyl chloride whose outer diameter, thickness, etc., are called JIS pipes. Examples of the outer diameter of the flange 2 include a range of 80 mm to 120 mm. Further, the thickness of the ridge 2 can be determined as appropriate.

  The drain pipe 3 can also be used without particular limitation as long as it is used in a conventional building or the like, as in the case of the fence 2, and generally has a hard cross-sectional shape that is circular. A tube made of a synthetic resin such as a polyvinyl chloride tube is preferably used. The outer diameter of the drain pipe 3 is, for example, in the range of 80 mm to 120 mm as in the case of the trough 2. Further, the thickness of the drain pipe 3 can also be determined as appropriate.

  The lower member 4 has a cylindrical part 6 on the upper end side, and has a drain pipe storage part 7 stored in the pipe of the drain pipe 3 on the lower end side.

  The shape and structure of the cylindrical portion 6 can correspond to the shape and structure of the tub 2 or the drain pipe 3. For example, when the tub 2 or the drain pipe 3 is cylindrical, the cylindrical portion 6 is In the case of a cylindrical shape and the tub 2 and the drain pipe 3 are in the shape of a rectangular tube, the cylindrical portion 6 is exemplified as a rectangular tube.

  The drain pipe storage portion 7 extends downward on the inner side of the lower end of the lower member 4. The shape of the drainage pipe storage part 7 can be made to correspond to the shape of the drainage pipe 3, and for example, it is exemplified to have a circular cross section corresponding to the cylindrical drainage pipe. Although it does not specifically limit about the outer diameter of the lower end of the drain pipe accommodating part 7, It is preferably considered that it is comparable as the internal diameter of the standing | starting edge part 31 of the drain pipe 3. FIG. When the lower end of the drain pipe storage part 7 is about the same as the inner diameter of the rising end part 31 of the drain pipe 3, the lower end of the drain pipe storage part 7 is inserted into the drain pipe 3 while being elastically deformed. An elastic force that repels toward the outside in the thickness direction of the rising end portion 31 of the drain pipe 3 is generated. Therefore, the lower member 4 can be reliably connected to the drain pipe 3 and held.

  In addition, it is preferable that the drain pipe storage portion 7 includes an inclined surface that slopes toward the center of the drain pipe 3. By this inclined surface, it is possible to guide rainwater W and the like flowing in from the lower end of the trough 2 to the center of the drainage pipe 3 without leaking.

  The length of the drainage pipe storage portion 7 can be appropriately set to a length that can stably hold the rising end portion 31 of the drainage pipe 3.

  Moreover, in the lower member 4, it is preferably considered that the lower member 4 includes a drain pipe covering portion 11 that extends from the outer peripheral edge of the lower end of the tubular portion 6 of the lower member 4 and covers the outer periphery of the rising end portion 31 of the drain pipe 3. .

  Between the outer peripheral surface of the drain pipe storage part 7 and the inner peripheral surface of the drain pipe cover part 11, the rising end 31 of the drain pipe 3 can be stored. The dimension between the outer peripheral surface of the drain pipe storage portion 7 and the inner peripheral surface of the drain pipe cover portion 11 is not particularly limited, but is at least equal to or greater than the thickness of the rising end portion 31 of the drain pipe 3. Be considered. When the clearance between the outer peripheral surface of the drain pipe storage part 7 and the inner peripheral surface of the drain pipe cover part 11 and the rising end 31 of the drain pipe 3 is small, the drain pipe 3 by the drain pipe storage part 7 In addition to the holding and fixing, the inner peripheral surface of the drain pipe covering portion 11 circumscribes the rising end portion 31 of the drain pipe 3, so that the connection and fixing between the lower member 4 and the drain pipe 3 becomes more reliable. On the other hand, when the clearance between the outer peripheral surface of the drain pipe storage part 7 and the inner peripheral surface of the drain pipe cover part 11 and the rising end part 31 of the drain pipe 3 is large, a plurality of types of drain pipes having different thicknesses. The lower member 4 can be connected to 3. For this reason, it is not necessary to design the lower member 4 having a size corresponding to each of the drain pipes 3 having different thicknesses, and the manufacturing cost of the drain pipe cover 1 can be suppressed.

  On the other hand, the upper member 5 has a cylindrical upper end opening 8 that faces the outer peripheral surface of the flange 2, a tapered surface that inclines outward from the lower end of the upper end opening 8, and a drooping from the lower end of the tapered surface. And a cover portion 9 composed of a vertical surface.

  The shape and structure of the upper end opening 8 of the upper member 5 can correspond to the shape and structure of the ridge 2, for example, when the ridge 2 is a round ridge, the upper end opening 6 is cylindrical, When the ridge 2 is a square ridge, the upper end opening 6 is exemplified as a rectangular tube.

  The inner diameter of the upper end opening 8 is slightly larger than the outer diameter of the flange 2 and is smaller than the inner diameter of the cylindrical portion 6 of the lower member 4.

  The upper end opening 8 can be inserted with the flange 2, and a clearance of about 1 to 3 mm is provided between the inner surface of the upper end opening 8 and the outer surface of the flange 2. Are preferably considered. If the clearance is within the above range, the lateral vibration of the flange 2 can be suppressed, and even if the lower end of the flange 2 is deformed by thermal expansion, the deformation is absorbed by the clearance. It is possible to suppress the occurrence of breakage or the like in the heel 2. Further, the upper member 5 can be moved up and down in the axial direction along the outer peripheral surface of the flange 2.

  As described above, the cover portion 9 is composed of the tapered surface 9a inclined outward from the lower end of the upper end opening 8, and the vertical surface 9 depending from the lower end of the tapered surface 9a. Since the diameter of the lower end of the cover part 9 is larger than the diameter of the upper end of the drain pipe storage part 7, the cylindrical part 6 of the lower member 4 can be covered by the cover part 9. By placing the upper member 5 having such a cover portion 9 on the lower member 4, the connection portion between the upper member 4 and the lower member 5 of the drain pipe cover 1 can be covered from the outside, and the cover portion 9 can maintain the appearance of the drain pipe cover 1 well.

  Between the upper member 5 and the lower member 4, the inner peripheral edge of the lower end of the cover portion 9 of the upper member 5 and the outer peripheral surface of the cylindrical portion 6 of the lower member 4 are spaced apart, and the cylindrical shape of the lower member 4 An opening 10 that communicates the internal space of the portion 6 with the outside is formed. In the case of heavy rain, the drain pipe cover 1 according to the present embodiment overflows rain water W that cannot be drained from the drain pipe 3 to the outside through the opening 10, thereby Backflow can be suppressed.

  Moreover, when the water level of rainwater W etc. rises, the taper surface 9a of the cover part 9 is pushed up by the buoyancy of water by rainwater W etc. from a back surface. At this time, since the upper member 5 has a clearance with the outer peripheral surface of the eaves 2, the upper member 6 slides in the eave eave direction (not shown) to increase the amount of drainage from the opening 10. It is possible to make it.

  FIG. 2 is a schematic cross-sectional view schematically showing another embodiment of the drain pipe cover 1 of the present invention. Portions common to the embodiment shown in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the upper member 5 of the present embodiment, a water flow guide portion 12 protrudes downward on the inner peripheral surface of the upper end opening 8 toward the center of the drainage pipe 3, and a protrusion on the lower inner peripheral portion of the cover portion 9. A portion 13 is provided. In addition, it is preferable to consider that the ridge portion receiving portion 14 is provided on the outer peripheral surface of the tubular portion 6 of the lower member 4 of this embodiment, and the ridge portion 13 is placed on the ridge portion receiving portion 14. Is done.

  The water flow guide portion 12 protrudes from the vicinity of the boundary between the lower end of the upper end opening 8 and the upper end of the tapered surface 9 a of the cover portion 9 to the inner wall surface of the upper end opening 8 and extends downward toward the center of the drain pipe 3. It is installed. Since FIG. 2 is a cross-sectional view, the water flow guide portion 12 is illustrated as a projecting piece, but actually, it may be provided over the entire inner peripheral surface of the upper end opening 8. Preferably, for example, it is exemplified that the water flow guide portion 12 is formed in an annular shape.

  By providing such a water flow guide portion 7, rainwater W that flows into the drainage pipe 3 side from the lower end of the trough 2 can be guided to the central portion of the drainage pipe 3. Therefore, when the amount of rain is normal, the rainwater W flowing from the upper end side of the upper end opening 8 is prevented from flowing into the opening 10 and flowing out of the drain pipe 3.

  The cross-sectional shape of the ridge portion 13 is not particularly limited as long as it is in contact with the ridge portion receiving portion 14 described later, and examples thereof include a rectangular shape and a fan shape. Further, the protrusion 13 is exemplified by being connected by a belt-like member provided in parallel with the inner peripheral surface of the cover 9. In this case, a gap formed between the inner peripheral surface of the cover portion 9 and the band-shaped member is divided by the ridge portion 13 to form the opening portion 10.

  As shown in FIG. 3, it is preferably considered that a plurality of protrusions 13 are provided along the inner peripheral surface portion of the lower end of the cover portion 9.

  In the lower member 4 of the present embodiment, a ridge portion receiving portion 14 is provided on the outer peripheral surface of the tubular portion 6.

  In FIG. 2, the protrusion receiving portion 14 is provided as a protrusion having a rectangular cross section from the outer peripheral surface of the cylindrical portion 6 of the lower member 4, but its shape is limited unless the opening 10 is closed. For example, the lower end of the ridge portion 13 may be accommodated in a concave shape, or may be a ridge formed in an annular shape along the outer peripheral surface of the lower member 4.

  The outer diameter of the cylindrical portion 6 of the lower member 4 is formed to be smaller than the inner diameter of the lower end of the cover portion 9 of the upper member 5. Therefore, the cylindrical part 6 of the lower member 4 can be inserted into the cover part 9 from the lower end of the cover part 9 of the upper member 5. At this time, as shown in FIG. 3, the upper member 5 is supported by the lower member 4 by placing the protruding portion 13 of the upper member 5 on the upper surface of the protruding portion receiving portion 14 of the lower member 4. Is done.

  In the method of connecting the ridge 13 and the ridge receiver 14, the opening 10 is not blocked. For this reason, the opening 10 always communicates the internal space of the cylindrical portion 6 with the outside.

  And it is preferably considered that a space is formed in a portion between the water flow guide portion 7 and the protrusion portion 13 and above the opening portion 10.

  In the drain pipe cover 1 of the present embodiment, as shown in FIG. 2, rainwater W flowing into the drain pipe 3 from the lower end of the gutter 2 in the event of heavy rain, etc., improves the drainage capacity of the drain pipe 3. The water level of the rainwater W may exceed the upper end of the tubular portion 6 of the lower member 4 due to the excess flowing back into the drain pipe cover 1. About the rainwater W exceeding the upper end of the cylindrical part 6 of the lower member 4, it drains out of the drain pipe cover 1 from the opening part 10 which connects the internal space of the cylindrical part 6, and the exterior. Further, when the water level of the rainwater W further rises, the lower surface of the water flow guide portion 7 functions as a backflow prevention valve, and the rainwater W is temporarily stored in the space formed in the portion corresponding to the upper portion of the opening 10, The drainage from the part 10 to the outside can be promoted. By such a water flow guide part 7 and the opening part 10, it is suppressed that the rain water W which overflowed from the drain pipe 3 flows back into the eaves 2 and eaves, and the water wetting and dirt of a building can be suppressed.

  In addition, the protrusion part 13 functions also as a rib which reinforces the intensity | strength of the vertical surface 9b of the cover part 9, and it is also possible to suppress the damage of the cover part 9 by contact with the ground.

  The present invention is not limited to the above embodiments. For example, the material of the drain pipe cover 1 is exemplified by metals such as stainless steel, copper, and aluminum, or synthetic resins such as hard polyvinyl chloride. In the drain pipe cover 1, the upper member 5 and the lower member 4 may be made of the same material or different materials.

DESCRIPTION OF SYMBOLS 1 Drain pipe cover 2 竪 樋 3 Drain pipe 31 Standing end part 4 Lower member 5 Upper member 6 Cylindrical part 7 Drain pipe storage part 8 Upper end opening part 9 Cover part 9a Tapered surface 9b Vertical surface 10 Opening part 11 Drain pipe cover part 12 water flow guide part 13 ridge part 14 ridge part receiving part G underground W rain water

Claims (3)

A drain pipe cover to be attached to the lower end of the fence and the rising end of the drain pipe buried in the ground,
A lower part having a cylindrical part on the upper end side and a drain pipe storage part stored in the pipe of the drain pipe on the lower end side;
It is formed from a cylindrical upper end opening facing the outer peripheral surface of the flange, a tapered surface inclined outward from the lower end of the upper end opening, and a vertical surface depending from the lower end of the tapered surface. It consists of two members with an upper member having a cover part,
A lower end of the cover part of the upper member is larger than a diameter of an upper end of the cylindrical part of the lower member, and the cylindrical part of the lower member is covered by the cover part of the upper member, An opening is formed between the lower member and an inner peripheral edge of a lower end of the cover portion of the upper member and an outer peripheral surface of the cylindrical portion of the lower member that are spaced apart from each other. Drain pipe cover.   The drainage pipe cover according to claim 1, further comprising a drainage pipe covering part extending from an outer peripheral edge at a lower end of the cylindrical part of the lower member and covering an outer circumference of the rising end part of the drainage pipe. . In the upper member, on the inner peripheral surface of the upper end opening, a water flow guide portion protrudes downward toward the center of the drainage pipe, and a protrusion is provided on the lower end inner peripheral edge of the cover portion,
A protrusion receiving portion is provided on the outer peripheral surface of the tubular portion of the lower member,
The drainage pipe cover according to claim 1 or 2, wherein the protruding portion is placed on the protruding portion receiving portion.

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