JP2024064098A - Piping member, and piping structure - Google Patents

Abstract

To provide a piping member and piping structure that enable reduction of adverse effects caused by foreign matter adhering to the outer surface of a vertical gutter section.SOLUTION: A piping member 6 constitutes a part of a piping structure 1. The piping structure 1 comprises: a first eave gutter 31; a second eave gutter 32 below the first eave gutter 31; and a vertical gutter section 4 that extends downward from the drop port 31b of the first eave gutter 31 and passes through an opening 32c in the bottom wall 32a of the second eave gutter 32 in a state that is separated from the second eave gutter 32 in flow path. The piping member 6 is attached to the vertical gutter section 4 between the first eave gutter 31 and the second eave gutter 32. The piping member 6 comprises a cylindrical guiding section 61 that increases in size from the first eave gutter 31 to the second eave gutter 32.SELECTED DRAWING: Figure 1

Description

This disclosure relates to piping components and piping structures.

Patent Document 1 discloses a piping structure. The piping structure disclosed in Patent Document 1 includes a drainage member that generates a siphon effect, an eaves gutter located below the drainage member and having a through hole at the bottom, a penetrating member that is fixed to the eaves gutter and is disposed in the through hole and penetrates the bottom, and a downspout that is connected to the drainage member and passes through the penetrating member and penetrates the bottom. The downspout includes a first downspout that extends downward from the drainage member, and a second downspout that extends downward from the eaves gutter, has a larger diameter than the first downspout, and has the lower end of the first downspout disposed inside. The first downspout or the second downspout is disposed within the penetrating member and penetrates the bottom.

Patent No. 7121178

In the piping structure of Patent Document 1, for example, if a foreign object adheres to the outer surface of the first downpipe, the foreign object may fall downward along the outer surface of the first downpipe and enter the second downpipe or the penetrating member. In such a case, there is a possibility that adverse effects such as clogging due to the foreign object may occur.

This disclosure provides piping components and piping structures that make it possible to reduce the adverse effects of foreign matter adhering to the outer surface of the downspout section.

The piping member according to one aspect of the present disclosure constitutes a part of the piping structure. The piping structure comprises a first eaves gutter, a second eaves gutter below the first eaves gutter, and a vertical gutter section that extends downward from the outlet of the first eaves gutter and passes through an opening in the bottom wall of the second eaves gutter while being separated from the second eaves gutter in terms of flow path. The piping member is attached to the vertical gutter section between the first eaves gutter and the second eaves gutter. The piping member comprises a cylindrical guide section that increases in size from the first eaves gutter to the second eaves gutter.

A piping structure according to one aspect of the present disclosure includes the above-mentioned piping member, a first eaves gutter, a second eaves gutter, and a vertical gutter section. The vertical gutter section includes a first vertical gutter extending downward from the outlet of the first eaves gutter, and a second vertical gutter extending downward from the opening of the second eaves gutter. The second vertical gutter is positioned below the first vertical gutter and spaced apart from the first vertical gutter. The piping member is attached to the first vertical gutter so as not to contact the second eaves gutter.

The piping structure according to one aspect of the present disclosure comprises the above-mentioned piping member, a first eaves gutter, a second eaves gutter, and a vertical gutter section. The vertical gutter section includes a vertical gutter that extends downward from the outlet of the first eaves gutter and passes through an opening of the second eaves gutter. The piping member is attached to the vertical gutter between the first eaves gutter and the second eaves gutter.

Aspects of the present disclosure make it possible to reduce the adverse effects of foreign matter adhering to the outer surface of the downspout section.

1 is a schematic diagram of a configuration example of a piping structure according to a first embodiment; FIG. 2 is a cross-sectional view of a portion of the piping structure of FIG. FIG. 2 is a perspective view of a piping member of the piping structure of FIG. 1; 4 is a cross-sectional view of the piping member of FIG. FIG. 13 is a schematic diagram of a configuration example of a piping structure according to a second embodiment; FIG. 6 is a cross-sectional view of a portion of the piping structure of FIG. FIG. 13 is a schematic diagram of a configuration example of a piping structure according to a third embodiment; FIG. 8 is a cross-sectional view of a portion of the piping structure of FIG. 4 is a cross-sectional view of a configuration example of a piping member according to a first modified example; 6 is a cross-sectional view of a configuration example of a piping member according to Modification 2; 13 is a bottom view of a configuration example of a piping member according to Modification 3.

Below, the embodiments will be described in detail with reference to the drawings as appropriate. However, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or duplicate explanation of substantially identical configurations may be omitted. This is to avoid the following explanation becoming unnecessarily redundant and to facilitate understanding by those skilled in the art. Note that the inventor(s) provide the attached drawings and the following explanation so that those skilled in the art can fully understand this disclosure, and do not intend for them to limit the subject matter described in the claims.

Unless otherwise specified, positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings. Each figure described in the following embodiments is a schematic diagram, and the ratios of size and thickness of each component in each figure do not necessarily reflect the actual dimensional ratios. Furthermore, the dimensional ratios of each element are not limited to the ratios shown in the drawings.

1. Embodiment
1.1 First embodiment
1.1.1 Configuration
FIG. 1 is a schematic diagram of a configuration example of a piping structure 1 according to the present embodiment. The piping structure 1 constitutes, for example, a gutter system (drainage system) for a building having multiple roofs. The gutter system receives rainwater from multiple roofs of a building and drains it into a manhole 21 on the ground 20. The rainwater collected in the manhole 21 flows from the manhole 21 through a buried pipe 22 into a storm water pipe. The building is, for example, a non-residential facility such as a store, office, factory, building, school, welfare facility, or hospital, and a residential facility such as a detached house, an apartment building, or each dwelling unit of a detached house or an apartment building. The non-residential facility also includes a theater, a movie theater, a public hall, an amusement park, a complex, a department store, a hotel, an inn, a kindergarten, a library, a museum, an art museum, an underground mall, a station, and an airport. The building may include multiple roofs, eaves (small roofs), and a large roof.

The piping structure 1 in FIG. 1 includes a first eaves gutter 31, a second eaves gutter 32, a vertical gutter section 4, a branch pipe 5, a piping member 6, a through pipe 7, and drains 81 and 82. In the piping structure 1 in FIG. 1, the vertical gutter section 4 is also called the main pipe in relation to the branch pipe 5.

The first eaves gutter 31 receives rainwater, for example, from the main roof of the building. The first eaves gutter 31 is installed under the main roof of the building. The first eaves gutter 31 is long and tub-shaped. The first eaves gutter 31 in FIG. 1 has a bottom wall 31a, and the bottom wall 31a has an outlet 31b. The downspout section 4 is connected to the outlet 31b. In FIG. 1, a drain 81 is placed in the outlet 31b of the first eaves gutter 31.

The drain 81 is, for example, a drain for promoting the siphoning effect. The drain 81 reduces the generation of vortexes and the entrainment of air at the drop outlet 31b. The drain 81 has a structure that is more likely to promote the siphoning effect than when there is no drain 81. The downspout section 4 is connected to the drain 81. The drain 81 contributes to promoting the siphoning effect, but it is a well-known fact that the promotion of the siphoning effect can be related not only to the drain 81 but also to the structure of the downspout section 4.

The second eaves gutter 32 receives rainwater, for example, from the eaves of a building. The second eaves gutter 32 is installed under the eaves of the building. The second eaves gutter 32 is in the shape of a long bucket. The second eaves gutter 32 in FIG. 1 has a bottom wall 32a, and the bottom wall 32a has an outlet 32b. The outlet 32b is connected to the branch pipe 5. In FIG. 1, a drain 82 is placed at the outlet 32b of the second eaves gutter 32.

The drain 82 is, for example, a drain for promoting the siphoning phenomenon. The drain 82 reduces the generation of vortexes and the entrainment of air at the drop opening 32b. The drain 82 has a structure that is more likely to promote the siphoning phenomenon than when the drain 82 is not present. The drain 82 contributes to promoting the siphoning phenomenon, but it is a well-known fact that the promotion of the siphoning phenomenon can be related not only to the drain 82 but also to the structure of the branch pipe 5. Unlike the drop opening 31b, the drop opening 32b of the second eaves gutter 32 does not need to be provided with a drain 82. Alternatively, a drain or the like having a structure that is generally not considered to contribute to promoting the siphoning phenomenon may be provided at the drop opening 32b.

In this embodiment, the second eaves gutter 32 is located below the first eaves gutter 31. More specifically, the second eaves gutter 32 overlaps at least a portion of the first eaves gutter 31 in the vertical direction. The second eaves gutter 32 has an opening 32c in a portion that overlaps with the drop opening 31b of the first eaves gutter 31 in the vertical direction. The opening 32c is a through hole that penetrates the bottom wall 32a of the second eaves gutter 32. A through pipe 7 is placed in the opening 32c.

Figure 2 is a cross-sectional view of a portion of the piping structure 1 in Figure 1.

2 is arranged to penetrate the opening 32c of the bottom wall 32a of the second eaves gutter 32. The through pipe 7 covers the entire circumference of the opening 32c and is attached to the edge of the opening 32c in the bottom wall 32a of the second eaves gutter 32. The through pipe 7 of FIG. 2 has a vertical wall portion 7a and a connection portion 7b. The vertical wall portion 7a extends upward from the bottom wall 32a of the second eaves gutter 32. The vertical wall portion 7a reduces the possibility that rainwater in the second eaves gutter 32 will leak to the outside through the opening 32c. The connection portion 7b extends downward from the bottom wall 32a of the second eaves gutter 32. The connection portion 7b is used to connect to the vertical gutter portion 4. In this embodiment, the vertical wall portion 7a and the connection portion 7b of the through pipe 7 are straight pipe-shaped. The cross section of the vertical wall portion 7a and the connection portion 7b perpendicular to the axis of the through pipe 7 is circular.

The downspout section 4 in FIG. 1 is installed to drain rainwater from the outlet 31b of the first eaves gutter 31 by siphoning. The downspout section 4 drains rainwater vertically from the outlet 31b. The upstream end of the downspout section 4 is connected to the outlet 31b. The downstream end of the downspout section 4 is inserted into the manhole section 21. In FIG. 1, a drain pipe cover 40 is placed to prevent rainwater from flowing into the manhole section 21 through the gap between the downspout section 4 and the manhole section 21.

In this embodiment, the downspout section 4 extends downward from the drop opening 31b of the first eaves gutter 31. The downspout section 4 passes through the opening 32c of the bottom wall 32a of the second eaves gutter 32 while being separated from the second eaves gutter 32 in terms of flow path. Here, "the downspout section 4 passes through the opening 32c of the bottom wall 32a of the second eaves gutter 32 while being separated from the second eaves gutter 32 in terms of flow path" means that the downspout section 4 passes through the opening 32c of the bottom wall 32a of the second eaves gutter 32 so that no fluid flows from the second eaves gutter 32 to the downspout section 4.

The downspout section 4 in FIG. 1 includes a first downspout 41 and a second downspout 42.

The first downspout 41 extends downward from the drop opening 31b of the first eaves gutter 31. The first downspout 41 has an upstream end 41a and a downstream end 41b. The upstream end 41a is the end (the upper end in FIG. 1) that is connected to the drop opening 31b in the first downspout 41. In this embodiment, the upstream end 41a of the first downspout 41 is connected to the drain 81 and is connected to the drop opening 31b of the first eaves gutter 31. In this embodiment, the downstream end 41b is located above the second downspout 42. In FIG. 2, the downstream end 41b is located above the through pipe 7. In particular, in FIG. 2, the downstream end 41b is located above the second eaves gutter 32.

The first downspout 41 is a portion of the downspout section 4 that is upstream of the second eaves gutter 32. The first downspout 41 is straight. The cross section of the first downspout 41 perpendicular to the pipe axis is circular. The material of the first downspout 41 is, for example, rigid polyvinyl chloride. The dimensions of the first downspout 41, for example, the outer shape and thickness, may be set in accordance with the standard for rigid polyvinyl chloride pipes (general) of JIS K 6741 "rigid polyvinyl chloride pipes". As an example, the first downspout 41 may be a pipe material with a nominal diameter of 65 or more in a VU or VP rigid polyvinyl chloride pipe in the standard for rigid polyvinyl chloride pipes (general) of JIS K 6741 "rigid polyvinyl chloride pipes", and may be a pipe material with a nominal diameter of 75, 100, or 125. In this embodiment, the first downspout 41 has a smaller diameter (inner diameter and outer diameter) than the through pipe 7.

The first downpipe 41 is fixed to the wall of the building so that the direction of the pipe axis (central axis) of the first downpipe 41 coincides with the up-down direction (vertical direction). The upstream end 41a of the first downpipe 41 is the upstream end of the downpipe section 4.

The second downspout 42 extends downward from the opening 32c of the second eaves gutter 32. The second downspout 42 has an upstream end 42a and a downstream end 42b. The upstream end 42a is located below the downstream end 41b of the first downspout 41. The upstream end 42a is connected to the downstream end 41b of the first downspout 41 in terms of flow path. In other words, the upstream end 42a faces the downstream end 41b of the first downspout 41 in the vertical direction. In this embodiment, the upstream end 42a is the end (upper end in FIG. 1) that is connected to the connection portion 7b of the through pipe 7 in the second downspout 42. The downstream end 42b is the end (lower end in FIG. 1) that is inserted into the manhole portion 21 in the second downspout 42. The downstream end 42b of the second downspout 42 is the downstream end of the downspout section 4.

In this embodiment, the second downpipe 42 is disposed below the first downpipe 41 and spaced apart from the first downpipe 41. That is, in the downpipe section 4, the first downpipe 41 and the second downpipe 42 are not directly connected. However, the first downpipe 41 and the second downpipe 42 are connected in terms of flow path. In FIG. 1, the second downpipe 42 is disposed below the first downpipe 41 so that rainwater that has passed through the first downpipe 41 flows into the second downpipe 42. In this way, the first downpipe 41 and the second downpipe 42 are disposed so as to overlap in the vertical direction. In other words, the downstream end 41b of the first downpipe 41 and the upstream end 42a of the second downpipe 42 face each other in the vertical direction.

The second downspout 42 in FIG. 1 includes a first vertical pipe 421, a second vertical pipe 422, and a junction 423.

The first vertical pipe 421 is the upstream part of the second downspout 42. The first vertical pipe 421 is straight. The cross section of the first vertical pipe 421 perpendicular to the pipe axis is circular. The material of the first vertical pipe 421 is, for example, rigid polyvinyl chloride. The dimensions of the first vertical pipe 421, for example, the outer shape and thickness, may be set in accordance with the standard for rigid polyvinyl chloride pipe (general) of JIS K 6741 "rigid polyvinyl chloride pipe". As an example, the first vertical pipe 421 may be a pipe material with a nominal diameter of 65 or more in the VU or VP rigid polyvinyl chloride pipe (general) standard of JIS K 6741 "rigid polyvinyl chloride pipe", and may be a pipe material with a nominal diameter of 75, 100, or 125. In this embodiment, the diameter (inner diameter and outer diameter) of the first vertical pipe 421 is larger than that of the first downspout 41. If the first downpipe 41 is a pipe material with a nominal diameter of 75, the first vertical pipe 421 may be a pipe material with a nominal diameter of 100, which is one size larger.

The first vertical pipe 421 is fixed to the wall of the building so that the direction of the pipe axis of the first vertical pipe 421 coincides with the up-down direction (vertical direction). The upper end of the first vertical pipe 421 is the upstream end 42a of the second downspout 42. In this embodiment, the diameter (inner diameter and outer diameter) of the first vertical pipe 421 is larger than that of the through pipe 7. Therefore, as shown in FIG. 2, the connection part 7b of the through pipe 7 is located inside the first vertical pipe 421.

The second vertical pipe 422 is a downstream portion of the second downspout 42. The second vertical pipe 422 is straight. The cross section of the second vertical pipe 422 perpendicular to the pipe axis is circular. The material of the second vertical pipe 422 is, for example, rigid polyvinyl chloride. The dimensions of the second vertical pipe 422, for example, the outer shape and thickness, may be set in accordance with the standard for rigid polyvinyl chloride pipe (general) of JIS K 6741 "rigid polyvinyl chloride pipe". As an example, the second vertical pipe 422 may be a pipe material with a nominal diameter of 65 or more in the VU or VP rigid polyvinyl chloride pipe (general) standard of JIS K 6741 "rigid polyvinyl chloride pipe", and may be a pipe material with a nominal diameter of 75, 100, or 125. In this embodiment, the diameter (inner diameter and outer diameter) of the second vertical pipe 422 is larger than that of the first downspout 41. If the first downpipe 41 is a pipe material with a nominal diameter of 75, the second downpipe 422 may be a pipe material with a nominal diameter of 100, which is one size larger.

The second vertical pipe 422 is fixed to the wall of the building so that the direction of the pipe axis of the second vertical pipe 422 coincides with the up-down direction (vertical direction). The lower end of the second vertical pipe 422 is the downstream end 4b of the second downspout 42.

The junction 423 connects the branch pipe 5 to the middle of the second downpipe 42. In the second downpipe 42 in FIG. 1, the junction 423 is between the first vertical pipe 421 and the second vertical pipe 422. The junction 423 includes a first receiving port 423a connected to the lower end of the first vertical pipe 421, a second receiving port 423b connected to the upper end of the second vertical pipe 422, and a branch port 423c. The junction 423 in FIG. 1 is T-shaped. The junction 423 is a so-called T-pipe (tee pipe). The material of the junction 423 is, for example, rigid polyvinyl chloride. The dimensions of the junction 423 may be set in accordance with the "Rigid polyvinyl chloride joint (VU joint) for outdoor drainage equipment" standard of the Polyvinyl Chloride Pipe and Joint Association.

In the second downpipe 42 in FIG. 1, the diameters (inner and outer diameters) of the first vertical pipe 421 and the diameters (inner and outer diameters) of the second vertical pipe 422 are equal. In other words, pipe materials corresponding to the same nominal diameter can be used for the first vertical pipe 421 and the second vertical pipe 422.

The branch pipe 5 in FIG. 1 is installed to allow rainwater from the drop outlet 32b of the second eaves gutter 32 to flow from the junction 423 into the vertical gutter section 4. The branch pipe 5 directs rainwater from the drop outlet 32b of the second eaves gutter 32 through the vertical gutter section 4 to the manhole section 21. The branch pipe 5 has an upstream end 5a and a downstream end 5b. The upstream end 5a is the end of the branch pipe 5 that is connected to the drop outlet 32b (the upper end in FIG. 1). The downstream end 5b is the end of the branch pipe 5 that is connected to the junction 423 (the left end in FIG. 1).

The branch pipe 5 in FIG. 1 comprises a vertical pipe 51, a horizontal pipe 52, and an elbow 53.

The vertical pipe 51 is the upstream part of the branch pipe 5. The vertical pipe 51 is straight. The cross section perpendicular to the pipe axis of the vertical pipe 51 is circular. The material of the vertical pipe 51 is rigid polyvinyl chloride. The dimensions of the vertical pipe 51, for example, the outer shape and thickness, may be set in accordance with the standard for rigid polyvinyl chloride pipes (general) of JIS K 6741 "Rigid Polyvinyl Chloride Pipes". The vertical pipe 51 is arranged so that the direction of the pipe axis of the vertical pipe 51 coincides with the up-down direction (vertical direction). The upstream end 5a of the branch pipe 5 is the upper end of the vertical pipe 51.

The horizontal pipe 52 is the downstream part of the branch pipe 5. The horizontal pipe 52 is straight. The cross section perpendicular to the pipe axis of the horizontal pipe 52 is circular. The material of the horizontal pipe 52 is rigid polyvinyl chloride. The dimensions of the horizontal pipe 52, for example, the outer shape and thickness, may be set according to the standard for rigid polyvinyl chloride pipe (general) of JIS K 6741 "Rigid Polyvinyl Chloride Pipe". The horizontal pipe 52 is arranged so that the direction of the pipe axis of the horizontal pipe 52 coincides with the horizontal direction. The first end (right end in FIG. 1) of the horizontal pipe 52 is connected to the vertical pipe 51 via the elbow 53, and the second end (left end in FIG. 1) of the horizontal pipe 52 is connected to the downspout section 4. The downstream end 5b of the branch pipe 5 is the second end of the horizontal pipe 52.

The elbow 53 is a member for connecting the vertical pipe 51 and the horizontal pipe 52. The elbow 53 has a first receiving port 53a connected to the lower end of the vertical pipe 51 and a second receiving port 53b connected to the first end of the horizontal pipe 52. The elbow 53 in FIG. 1 is L-shaped. The material of the elbow 53 is, for example, rigid polyvinyl chloride. The dimensions of the elbow 53 may be set in accordance with the standard of JIS K 6739 "Rigid polyvinyl chloride pipe joints for drainage". For example, the elbow 53 in FIG. 1 is a 90° bent elbow (so-called DL) specified in JIS K 6739.

The piping member 6 in FIG. 1 is attached to the vertical gutter section 4 between the first eaves gutter 31 and the second eaves gutter 32. FIG. 3 is a perspective view of the piping member 6. FIG. 4 is a cross-sectional view of the piping member 6.

The piping member 6 includes a guide portion 61 and an attachment portion 62. In this embodiment, the guide portion 61 and the attachment portion 62 are formed as a continuous, integrated unit. The material of the piping member 6 is, for example, rigid polyvinyl chloride.

The mounting portion 62 is a portion for attaching the piping member 6 to the downspout section 4. The mounting portion 62 in FIG. 3 is tubular in shape into which the downspout section 4 fits. In this embodiment, the mounting portion 62 is cylindrical. The opening 62a of the mounting portion 62 is large enough to fit the first downspout 41 of the downspout section 4.

The induction section 61 is cylindrical in shape and increases in size from the upstream end to the downstream end. The upstream end of the induction section 61 is the end on the first eaves gutter 31 side. The downstream end of the induction section 61 is the end on the second eaves gutter 32 side. In other words, the induction section 61 is cylindrical in shape and increases in size from the first eaves gutter 31 to the second eaves gutter 32.

In this embodiment, the induction section 61 is a hollow frustum. A frustum is a shape obtained by removing from a cone a cone that shares a vertex with the cone and is similarly reduced in size. In this embodiment, the induction section 61 is a hollow frustum. The outer and inner peripheral shapes of the induction section 61 in a plane perpendicular to the central axis C1 of the piping member 6 are circular. The outer and inner peripheral shapes of the induction section 61 in a plane perpendicular to the central axis C1 of the piping member 6 become larger from the upstream end of the piping member 6 toward the downstream end. In this embodiment, the induction section 61 extends from the attachment section 62. In particular, the induction section 61 extends from the lower end of the attachment section 62.

The piping member 6 described above is attached to the downpipe section 4 between the first eaves gutter 31 and the second eaves gutter 32 so that the central axis C1 of the piping member 6 coincides with the pipe axis of the downpipe section 4. As shown in FIG. 2, the piping member 6 is attached to the downstream end 41b of the first downpipe 41. In FIG. 2, the piping member 6 is attached to the first downpipe 41 so as not to come into contact with the through pipe 7. In FIG. 2, the downstream end 41b of the first downpipe 41 is within the guide section 61 of the piping member 6.

Next, the dimensions of the piping member 6 will be described with reference to FIG. 4. In FIG. 4, D1 is the dimension of the opening 61a at the lower end of the induction portion 61. In this embodiment, since the inner circumferential shape of the induction portion 61 is circular, D1 is the inner diameter of the opening 61a. In this embodiment, D1 is larger than the inner diameter of the mounting portion 62 (represented by D2 in FIG. 4). In particular, D1 is preferably 1.1 times or more and 3.0 times or less than D2. In addition, D1 is preferably larger than the outer diameter of the through pipe 7. Here, the outer diameter of the through pipe 7 may be the outer diameter of the vertical wall portion 7a of the through pipe 7. In this embodiment, D2 is set to be slightly larger than the outer diameter of the first downpipe 41 so that the first downpipe 41 fits inside the mounting portion 62. In FIG. 4, H1 is the length of the induction portion 61 in the direction of the central axis C1 of the piping member 6. In this embodiment, H1 is 20 mm or more and 300 mm or less. In FIG. 4, H2 is the length of the attachment portion 62 in the direction of the central axis C1 of the piping member 6. The larger H2 is, the more stable the fit between the attachment portion 62 and the first downspout 41. If H2 is too large, it may be difficult to attach the piping member 6 to the first downspout 41, and the material cost of the piping member 6 may increase. In this embodiment, H2 is not particularly limited, but is preferably a dimension that provides a stable fit between the attachment portion 62 and the first downspout 41.

In the above-described piping structure 1, foreign matter may adhere to the outer surface of the downspout section 4. Examples of foreign matter include fallen leaves, garbage, and sewage. In particular, foreign matter adhering to the outer surface of the first downspout 41 of the downspout section 4 may move downward along the outer surface of the first downspout 41 due to gravity. In the piping structure 1, there is a through pipe 7 below the first downspout 41, but the piping structure 1 is equipped with a piping member 6. The piping member 6 guides foreign matter moving downward along the outer surface of the first downspout 41 to the flow path of the second eaves gutter 32 by the guide portion 61 (particularly the outer peripheral surface of the guide portion 61). Therefore, the piping member 6 makes it possible to reduce the possibility that foreign matter adhering to the outer surface of the downspout section 4 (first downspout 41) will enter the through pipe 7. In other words, the piping member 6 makes it possible to reduce the possibility of adverse effects (for example, clogging of the through pipe 7) caused by foreign matter entering the through pipe 7. In this way, the piping member 6 makes it possible to reduce the adverse effects of foreign matter adhering to the outer surface of the downspout section 4 (first downspout 41).

In the piping structure 1, the first downspout 41 is not directly connected to the through pipe 7, but is located above the through pipe 7. Therefore, the piping structure 1 can be constructed without inserting the first downspout 41 into the through pipe 7. Also, because the first downspout 41 is not inserted into the through pipe 7, even if the first downspout 41 moves horizontally, the first downspout 41 is unlikely to hit the through pipe 7. Therefore, the possibility of damage to the through pipe 7 due to impact caused by the horizontal movement of the first downspout 41 is reduced.

In the piping structure 1, the first downspout 41 is not directly connected to the through pipe 7, so rainwater flowing out from the first downspout 41 falls by gravity into the through pipe 7. Here, when rainwater flows out from the first downspout 41, the rainwater may splash around the first downspout 41. However, in the piping structure 1, the piping member 6 can guide the rainwater flowing out from the first downspout 41 into the through pipe 7 by the guide portion 61 (particularly the inner peripheral surface of the guide portion 61). This makes it possible to reduce the possibility that the rainwater flowing out from the first downspout 41 will flow into the second eaves gutter 32 instead of the through pipe 7.

[1.1.2 Effects, etc.]
The piping member 6 described above constitutes a part of the piping structure 1. The piping structure 1 includes a first eaves gutter 31, a second eaves gutter 32 below the first eaves gutter 31, and a vertical gutter section 4 extending downward from a drop opening 31b of the first eaves gutter 31 and passing through an opening 32c of a bottom wall 32a of the second eaves gutter 32 while being separated from the second eaves gutter 32 in terms of flow path. The piping member 6 is attached to the vertical gutter section 4 between the first eaves gutter 31 and the second eaves gutter 32. The piping member 6 includes a cylindrical guide section 61 whose size increases from the first eaves gutter 31 toward the second eaves gutter 32. This configuration makes it possible to reduce adverse effects caused by foreign matter adhering to the outer surface of the vertical gutter section 4.

In the first embodiment, the piping member 6 further includes a cylindrical mounting portion 62 into which the downspout portion 4 fits. The guide portion 61 extends from the mounting portion 62. This configuration makes it easy to attach the piping member 6 to the downspout portion 4.

In the first embodiment, the length H1 of the guide portion 61 in the direction of the central axis C1 of the piping member 6 is 20 mm or more and 300 mm or less. This configuration makes it possible to reduce the adverse effects of foreign matter adhering to the outer surface of the downspout portion 4.

In the first embodiment, the downspout section 4 includes a first downspout 41 extending downward from the outlet of the first eaves gutter 31, and a second downspout 42 extending downward from the opening of the second eaves gutter 32. The second downspout 42 is positioned below the first downspout 41 and spaced apart from the first downspout 41. The piping member 6 is attached to the first downspout 41 so as not to come into contact with the second downspout 42. This configuration makes it easier to attach the piping member 6 to the downspout section 4, since the first downspout 41 and the second downspout 42 are not connected.

In the first embodiment, the piping structure 1 further includes a through pipe 7 that passes through the opening 32c of the second eaves gutter 32. The upstream end 42a of the second downpipe 42 is connected to the through pipe 7. The first downpipe 41 is disposed above the through pipe 7 and spaced apart from the through pipe 7. The piping member 6 is attached to the first downpipe 41 so as not to come into contact with the through pipe 7. This configuration can reduce the possibility of damage to the through pipe 7 due to an impact caused by the horizontal movement of the first downpipe 41.

The piping structure 1 described above includes a piping member 6, a first eaves gutter 31, a second eaves gutter 32, and a vertical gutter section 4. The vertical gutter section 4 includes a first vertical gutter 41 extending downward from the drop opening 31b of the first eaves gutter 31, and a second vertical gutter 42 extending downward from the opening 32c of the second eaves gutter 32. The second vertical gutter 42 is disposed below the first vertical gutter 41 and spaced apart from the first vertical gutter 41. The piping member 6 is attached to the first vertical gutter 41 so as not to come into contact with the second vertical gutter 42. This configuration makes it possible to reduce the adverse effects of foreign matter adhering to the outer surface of the vertical gutter section 4. This configuration makes it easier to attach the piping member 6 to the vertical gutter section 4 because the first vertical gutter 41 and the second vertical gutter 42 are not connected.

In the first embodiment, the piping structure 1 further includes a drain 81 disposed at the outlet 31b of the first eaves gutter 31, and a branch pipe 5 connected to the outlet 32b of the second eaves gutter 32. The second downpipe 42 includes a junction 423 connected to the branch pipe 5 below the second eaves gutter 32. This configuration makes it possible to use the downpipe section 4 for draining water from the first eaves gutter 31 and for draining water from the second eaves gutter 32.

[1.2 Second embodiment]
1.2.1 Configuration
Fig. 5 is a schematic diagram of a configuration example of a piping structure 1A according to embodiment 2. Fig. 6 is a cross-sectional view of a part of the piping structure 1A of Fig. 5 .

The piping structure 1A in FIG. 5 includes a first eaves gutter 31, a second eaves gutter 32, a vertical gutter section 4A, a branch pipe 5, a piping member 6, a through pipe 7, and drains 81 and 82. In the piping structure 1A in FIG. 5, the vertical gutter section 4A is also called the main pipe in relation to the branch pipe 5.

The downspout section 4A in FIG. 5 includes a first downspout 41A and a second downspout 42A.

The first downspout 41A is a downspout that extends downward from the drop outlet 31b of the first downspout 31 in the downspout section 4A and penetrates the opening 32c of the second downspout 32. As shown in FIG. 6, the first downspout 41A passes through the inside of the through pipe 7 and penetrates the opening 32c of the second downspout 32. Therefore, in this embodiment, the downstream end 41b of the first downspout 41A is located below the bottom wall 32a of the second downspout 32.

The second downpipe 42B in FIG. 5 includes a first vertical pipe 421, a second vertical pipe 422, a junction 423, and a connection joint 424. The connection joint 424 connects the first downpipe 41A and the first vertical pipe 421. In this embodiment, the diameter (inner diameter and outer diameter) of the first downpipe 41A is smaller than the diameter (inner diameter and outer diameter) of the first vertical pipe 421. The upstream end of the connection joint 424 has a shape corresponding to the diameter (inner diameter and outer diameter) of the first downpipe 41A. The downstream end of the connection joint 424 has a shape corresponding to the diameter (inner diameter and outer diameter) of the first vertical pipe 421. The connection joint 424 is, for example, a member (such as an increaser) that connects pipes of different diameters. In this embodiment, the upstream end of the connection joint 424 is the upstream end 42a of the second downpipe 42A.

The piping member 6 in FIG. 6 is attached to the vertical gutter section 4A between the first eaves gutter 31 and the second eaves gutter 32. More specifically, the piping member 6 is attached to the vertical gutter section 4A between the first eaves gutter 31 and the second eaves gutter 32 so that the central axis C1 of the piping member 6 coincides with the pipe axis of the vertical gutter section 4A. As shown in FIG. 6, the piping member 6 is attached to the first vertical gutter 41A above the second eaves gutter 32. In FIG. 6, the piping member 6 is attached to the first vertical gutter 41A so as not to come into contact with the through pipe 7.

Next, the dimensions of the piping member 6 will be described with reference to FIG. 4. In this embodiment, D1 is larger than the inner diameter D2 of the attachment portion 62. In particular, D1 should be 1.1 to 3.0 times larger than D2. In addition, D1 should be larger than the outer diameter of the through pipe 7. Here, the outer diameter of the through pipe 7 may be the outer diameter of the vertical wall portion 7a. In this embodiment, H1 is 20 mm to 300 mm. In this embodiment, H2 is not particularly limited, but is preferably a dimension that ensures stable engagement between the attachment portion 62 and the first downpipe 41A.

In the above-described piping structure 1A, foreign matter may adhere to the outer surface of the downspout section 4A. Examples of foreign matter include fallen leaves, garbage, and sewage. In particular, foreign matter attached to the outer surface of the first downspout 41A of the downspout section 4A may move downward along the outer surface of the first downspout 41A by gravity. The piping structure 1A includes a piping member 6. The piping member 6 guides foreign matter moving downward along the outer surface of the first downspout 41A to the flow path of the second eaves gutter 32 by the guide portion 61 (particularly the outer peripheral surface of the guide portion 61). Therefore, the piping member 6 makes it possible to reduce the possibility that foreign matter attached to the outer surface of the downspout section 4A (first downspout 41A) will reach below the second eaves gutter 32 along the outer surface of the downspout section 4A. In other words, the piping member 6 makes it possible to reduce the possibility of adverse effects (e.g., dirt on the downspout section 4) caused by adhesion to the outer surface of the through pipe 7. In particular, the piping member 6 makes it possible to reduce the possibility of foreign matter adhering to the portion of the vertical gutter section 4A below the second eaves gutter 32. The portion of the vertical gutter section 4A below the second eaves gutter 32 is more visible to people than the portion of the vertical gutter section 4A above the second eaves gutter 32. Therefore, reducing the possibility of foreign matter adhering to the portion of the vertical gutter section 4A below the second eaves gutter 32 can contribute to maintaining the appearance of the piping structure 1A in a clean state.

[1.2.2 Effects, etc.]
The piping member 6 described above constitutes a part of the piping structure 1A. The piping structure 1A includes a first eaves gutter 31, a second eaves gutter 32 below the first eaves gutter 31, and a vertical gutter section 4A extending downward from a drop opening 31b of the first eaves gutter 31 and passing through an opening 32c of a bottom wall 32a of the second eaves gutter 32 while being separated from the second eaves gutter 32 in terms of flow path. The piping member 6 is attached to the vertical gutter section 4A between the first eaves gutter 31 and the second eaves gutter 32. The piping member 6 includes a cylindrical guide section 61 whose size increases from the first eaves gutter 31 toward the second eaves gutter 32. This configuration makes it possible to reduce adverse effects caused by foreign matter adhering to the outer surface of the vertical gutter section 4A.

In the second embodiment, the piping member 6 further includes a cylindrical mounting portion 62 into which the downspout portion 4A fits. The guide portion 61 extends from the mounting portion 62. This configuration makes it easy to attach the piping member 6 to the downspout portion 4A.

In the second embodiment, the length H1 of the guide portion 61 in the direction of the central axis C1 of the piping member 6 is 20 mm or more and 300 mm or less. This configuration makes it possible to reduce the adverse effects of foreign matter adhering to the outer surface of the downspout portion 4A.

In the second embodiment, the downspout section 4A includes a downspout (first downspout 41A) that extends downward from the drop outlet 31b of the first eaves gutter 31 and passes through the opening 32c of the second eaves gutter 32. The piping member 6 is attached to the downspout (first downspout 41A) between the first eaves gutter 31 and the second eaves gutter 32. This configuration makes it possible to reduce the possibility of foreign matter adhering to the portion of the downspout section 4A below the second eaves gutter 32.

In the second embodiment, the piping structure 1A further includes a through pipe 7 that penetrates the opening 32c of the second eaves gutter 32. The downspout (first downspout 41A) passes through the inside of the through pipe 7 and penetrates the opening 32c of the second eaves gutter 32. The piping member 6 is attached to the downspout (first downspout 41A) so as not to come into contact with the through pipe 7. This configuration makes it possible to reduce the adverse effects of foreign matter adhering to the outer surface of the downspout portion 4A.

The piping structure 1A described above comprises a piping member 6, a first eaves gutter 31, a second eaves gutter 32, and a vertical gutter section 4A. The vertical gutter section 4A includes a vertical gutter (first vertical gutter 41A) that extends downward from the drop outlet 31b of the first eaves gutter 31 and passes through the opening 32c of the second eaves gutter 32. The piping member 6 is attached to the vertical gutter (first vertical gutter 41A) between the first eaves gutter 31 and the second eaves gutter 32. This configuration makes it possible to reduce the adverse effects of foreign matter adhering to the outer surface of the vertical gutter section 4A.

In embodiment 2, the piping structure 1A further includes a drain 81 disposed at the outlet 31b of the first eaves gutter 31, and a branch pipe 5 connected to the outlet 32b of the second eaves gutter 32. The vertical gutter section 4A includes a junction section 423 connected to the branch pipe 5 below the second eaves gutter 32. This configuration makes it possible to use the vertical gutter section 4A for draining water from the first eaves gutter 31 and for draining water from the second eaves gutter 32.

1.3 Third embodiment
1.3.1 Configuration
Fig. 7 is a schematic diagram of a configuration example of a piping structure 1B according to embodiment 3. Fig. 8 is a cross-sectional view of a part of the piping structure 1B of Fig. 7 .

The piping structure 1B in FIG. 7 includes a first eaves gutter 31, a second eaves gutter 32, a vertical gutter section 4B, a branch pipe 5, a piping member 6, and drains 81 and 82. In the piping structure 1B in FIG. 7, the vertical gutter section 4B is also called the main pipe in relation to the branch pipe 5.

The downspout section 4B in FIG. 7 includes a first downspout 41 and a second downspout 42B.

The second downspout 42B extends downward from the opening 32c of the second downspout 32. In this embodiment, as shown in FIG. 8, the second downspout 42B penetrates the opening 32c of the second downspout 32. The second downspout 42B has an upstream end 42a and a downstream end 42b. The upstream end 42a is located above the bottom wall 32a of the second downspout 32, but below the downstream end 41b of the first downspout 41. The upstream end 42a is connected to the downstream end 41b of the first downspout 41 in terms of flow path. In other words, the upstream end 42a faces the downstream end 41b of the first downspout 41 in the vertical direction. The downstream end 42b is the end of the second downspout 42 that is inserted into the manhole section 21 (the lower end in FIG. 1). The downstream end 42b of the second downspout 42 is the downstream end of the downspout section 4.

In this embodiment, the second downpipe 42B is disposed below the first downpipe 41 and spaced apart from the first downpipe 41. That is, in the downpipe section 4, the first downpipe 41 and the second downpipe 42B are not directly connected. However, the first downpipe 41 and the second downpipe 42B are connected in terms of flow path. In FIG. 8, the second downpipe 42B is disposed below the first downpipe 41 so that rainwater that has passed through the first downpipe 41 flows into the second downpipe 42B. In this way, the first downpipe 41 and the second downpipe 42B are disposed so as to overlap in the vertical direction. In other words, the downstream end 41b of the first downpipe 41 and the upstream end 42a of the second downpipe 42B face each other in the vertical direction.

The second downspout 42B in FIG. 7 includes a first vertical pipe 421, a second vertical pipe 422, and a junction 423. In this embodiment, as shown in FIG. 8, the first vertical pipe 421 penetrates the opening 32c of the bottom wall 32a of the second eaves gutter 32. In FIG. 8, sealing members 91 and 92 are arranged around the opening 32c of the second eaves gutter 32. The sealing member 91 is arranged on the upper surface of the bottom wall 32a of the second eaves gutter 32 so as to surround the entire circumference of the opening 32c. The sealing member 92 is arranged on the lower surface of the bottom wall 32a of the second eaves gutter 32 so as to surround the entire circumference of the opening 32c. The sealing members 91 and 92 reduce the possibility that rainwater in the second eaves gutter 32 will leak to the outside through the opening 32c.

The piping member 6 in FIG. 8 is attached to the downpipe section 4B between the first eaves gutter 31 and the second eaves gutter 32. More specifically, the piping member 6 is attached to the downpipe section 4B between the first eaves gutter 31 and the second eaves gutter 32 so that the central axis C1 of the piping member 6 coincides with the pipe axis of the downpipe section 4B. As shown in FIG. 8, the piping member 6 is attached to the downstream end 41b of the first downpipe 41. In FIG. 8, the piping member 6 is attached to the first downpipe 41 so as not to contact the second downpipe 42B. In FIG. 8, the downstream end 41b of the first downpipe 41 is within the guide section 61 of the piping member 6.

Next, the dimensions of the piping member 6 will be described with reference to FIG. 4. In this embodiment, D1 is larger than the inner diameter D2 of the attachment portion 62. In particular, D1 should be 1.1 to 3.0 times larger than D2. In addition, D1 should be larger than the outer diameter of the second downpipe 42B. Here, the outer diameter of the second downpipe 42B may be the outer diameter of the first vertical pipe 421. In this embodiment, H1 is 20 mm to 300 mm. In this embodiment, H2 is not particularly limited, but is preferably a dimension that ensures stable engagement between the attachment portion 62 and the first downpipe 41.

In the piping structure 1B described above, foreign matter may adhere to the outer surface of the downspout section 4B. Examples of foreign matter include fallen leaves, garbage, sewage, etc. In particular, foreign matter adhering to the outer surface of the first downspout 41 of the downspout section 4B may move downward along the outer surface of the first downspout 41 due to gravity. In the piping structure 1B, the second downspout 42B is located below the first downspout 41, but the piping structure 1B is equipped with a piping member 6. The piping member 6 guides foreign matter moving downward along the outer surface of the first downspout 41 to the flow path of the second eaves gutter 32 by the guide portion 61 (particularly the outer peripheral surface of the guide portion 61). Therefore, the piping member 6 makes it possible to reduce the possibility that foreign matter adhering to the outer surface of the downspout section 4B (first downspout 41) will enter the second downspout 42B. In other words, the piping member 6 makes it possible to reduce the possibility of adverse effects (e.g., clogging of the second downspout 42B) caused by foreign matter entering the second downspout 42B. In this way, the piping member 6 makes it possible to reduce adverse effects caused by foreign matter adhering to the outer surface of the downspout portion 4B (first downspout 41).

In the piping structure 1B, the first downspout 41 is not directly connected to the second downspout 42B, but is located above the second downspout 42B. Therefore, the piping structure 1B can be constructed without inserting the first downspout 41 into the second downspout 42B. Also, because the first downspout 41 is not inserted into the second downspout 42B, even if the first downspout 41 moves horizontally, the first downspout 41 is unlikely to hit the second downspout 42B. Therefore, the possibility of damage to the second downspout 42B due to impact caused by the horizontal movement of the first downspout 41 is reduced.

In the piping structure 1B, the first downpipe 41 is not directly connected to the second downpipe 42B, so rainwater flowing out from the first downpipe 41 falls by gravity into the second downpipe 42B. Here, when rainwater flows out of the first downpipe 41, the rainwater may splash around the first downpipe 41. However, in the piping structure 1B, the piping member 6 can guide the rainwater flowing out from the first downpipe 41 into the second downpipe 42B by the guide portion 61 (particularly the inner peripheral surface of the guide portion 61). This makes it possible to reduce the possibility that the rainwater flowing out from the first downpipe 41 will flow into the second eaves gutter 32 instead of the second downpipe 42B.

[1.3.2 Effects, etc.]
The piping member 6 described above constitutes a part of the piping structure 1B. The piping structure 1B includes a first eaves gutter 31, a second eaves gutter 32 below the first eaves gutter 31, and a vertical gutter section 4B extending downward from a drop opening 31b of the first eaves gutter 31 and passing through an opening 32c of a bottom wall 32a of the second eaves gutter 32 while being separated from the second eaves gutter 32 in terms of flow path. The piping member 6 is attached to the vertical gutter section 4B between the first eaves gutter 31 and the second eaves gutter 32. The piping member 6 includes a cylindrical guide section 61 whose size increases from the first eaves gutter 31 toward the second eaves gutter 32. This configuration makes it possible to reduce adverse effects caused by foreign matter adhering to the outer surface of the vertical gutter section 4B.

In the third embodiment, the piping member 6 further includes a cylindrical mounting portion 62 into which the downspout portion 4B fits. The guide portion 61 extends from the mounting portion 62. This configuration makes it easy to attach the piping member 6 to the downspout portion 4B.

In the third embodiment, the length H1 of the guide portion 61 in the direction of the central axis C1 of the piping member 6 is 20 mm or more and 300 mm or less. This configuration makes it possible to reduce the adverse effects of foreign matter adhering to the outer surface of the downspout portion 4B.

In the third embodiment, the downspout section 4B includes a first downspout 41 extending downward from the outlet of the first eaves gutter 31, and a second downspout 42B extending downward from the opening of the second eaves gutter 32. The second downspout 42B is positioned below the first downspout 41 and spaced apart from the first downspout 41. The piping member 6 is attached to the first downspout 41 so as not to come into contact with the second downspout 42B. This configuration makes it easier to attach the piping member 6 to the downspout section 4, since the first downspout 41 and the second downspout 42B are not connected.

In the third embodiment, the second downpipe 42B passes through the opening 32c of the second eaves gutter 32. The second downpipe 42B is positioned below the first downpipe 41 and spaced apart from the first downpipe 41. The piping member 6 is attached to the first downpipe 41 so as not to come into contact with the second downpipe 42B. This configuration can reduce the possibility of damage to the second downpipe 42B due to an impact caused by the horizontal movement of the first downpipe 41.

The piping structure 1B described above includes a piping member 6, a first eaves gutter 31, a second eaves gutter 32, and a vertical gutter section 4B. The vertical gutter section 4B includes a first vertical gutter 41 extending downward from the drop opening 31b of the first eaves gutter 31, and a second vertical gutter 42B extending downward from the opening 32c of the second eaves gutter 32. The second vertical gutter 42B is disposed below the first vertical gutter 41 and spaced apart from the first vertical gutter 41. The piping member 6 is attached to the first vertical gutter 41 so as not to come into contact with the second vertical gutter 42B. This configuration makes it possible to reduce the adverse effects of foreign matter adhering to the outer surface of the vertical gutter section 4B. This configuration makes it easier to attach the piping member 6 to the vertical gutter section 4B because the first vertical gutter 41 and the second vertical gutter 42B are not connected.

In embodiment 3, the piping structure 1B further includes a drain 81 disposed at the outlet 31b of the first eaves gutter 31, and a branch pipe 5 connected to the outlet 32b of the second eaves gutter 32. The second downspout 42B includes a junction 423 connected to the branch pipe 5 below the second eaves gutter 32. This configuration makes it possible to use the downspout section 4B for draining water from the first eaves gutter 31 and for draining water from the second eaves gutter 32.

2. Modifications
The embodiments of the present disclosure are not limited to the above-mentioned embodiments. The above-mentioned embodiments can be modified in various ways depending on the design, etc., as long as the object of the present disclosure can be achieved. Below, modified examples of the above-mentioned embodiments are listed. The modified examples described below can be applied in appropriate combination.

[2.1 Modification 1]
9 is a cross-sectional view of a configuration example of a piping member 6C according to Modification 1. The piping member 6C can be used in place of the piping member 6 in each of the piping structures 1, 1A, and 1B of the first, second, and third embodiments.

The piping member 6C in FIG. 9 includes a guide portion 61 and an attachment portion 62. In this modification, the guide portion 61 and the attachment portion 62 are formed as a continuous, integrated unit. The material of the piping member 6C is, for example, rigid polyvinyl chloride.

The induction portion 61 in FIG. 9 does not extend from the lower end of the mounting portion 62, but from between the upper and lower ends of the mounting portion 62. In other words, the mounting portion 62 extends downward from the upper end of the induction portion 61. In this piping member 6C, the upper end of the induction portion 61 is above the lower end of the mounting portion 62.

Next, the dimensions of the piping member 6C will be explained with reference to Figure 9.

In FIG. 9, D1 is the dimension of the opening 61a at the lower end of the guide portion 61. In this modified example, since the inner peripheral shape of the guide portion 61 is circular, D1 is the inner diameter of the opening 61a. In this modified example, D1 is larger than the inner diameter of the mounting portion 62 (represented by D2 in FIG. 9). In particular, D1 is preferably 1.1 to 3.0 times larger than D2. When the piping member 6C is used in the piping structure 1, 1A, D1 is preferably larger than the outer diameter of the through pipe 7. Here, the outer diameter of the through pipe 7 may be the outer diameter of the vertical wall portion 7a of the through pipe 7. When the piping member 6C is used in the piping structure 1B, D1 is preferably larger than the outer diameter of the second downpipe 42B. Here, the outer diameter of the second downpipe 42B may be the outer diameter of the first vertical pipe 421.

In FIG. 9, H1 is the length of the induction portion 61 in the direction of the central axis C1 of the piping member 6C. In this modified example, H1 is 20 mm or more and 300 mm or less.

In FIG. 9, H2 is the length of the mounting portion 62 in the direction of the central axis C1 of the piping member 6C. H21 is the distance from the upper end of the mounting portion 62 to the upper end of the guide portion 61 in the direction of the central axis C1 of the piping member 6C. H22 is the distance from the upper end of the guide portion 61 to the lower end of the mounting portion 62 in the direction of the central axis C1 of the piping member 6C. In other words, H2 = H21 + H22. In this modified example, H22 is greater than 0 and less than or equal to twice H1. This makes it easier to attach the piping member 6C to the downspout portion (4, 4A, 4B).

In the piping member 6C described above, the distance H22 from the upper end of the guide portion 61 to the lower end of the attachment portion 62 in the direction of the central axis C1 of the piping member 6C is greater than 0 and is equal to or less than twice the length H1 of the guide portion 61 in the direction of the central axis C1 of the piping member 6C. This configuration makes it easier to attach the piping member 6C to the downspout portion (4, 4A, 4B).

[2.2 Modification 2]
10 is a cross-sectional view of a configuration example of a piping member 6D according to Modification 2. The piping member 6D can be used in place of the piping member 6 in each of the piping structures 1, 1A, and 1B of the first, second, and third embodiments.

The piping member 6D in FIG. 10 includes a guide portion 61, an attachment portion 62, and an auxiliary portion 63. In this modification, the guide portion 61, the attachment portion 62, and the auxiliary portion 63 are formed as a continuous, integrated unit. The material of the piping member 6D is, for example, rigid polyvinyl chloride.

The induction portion 61 in FIG. 10 extends from the lower end of the mounting portion 62.

The auxiliary portion 63 extends downward from the inner peripheral surface of the guide portion 61. The auxiliary portion 63 is cylindrical. In this modified example, the auxiliary portion 63 is cylindrical.

Next, the dimensions of the piping member 6D will be explained with reference to Figure 10.

In FIG. 10, D1 is the dimension of the opening 61a at the lower end of the induction section 61. In this modified example, since the inner peripheral shape of the induction section 61 is circular, D1 is the inner diameter of the opening 61a. In this modified example, D1 is larger than the inner diameter of the mounting section 62 (represented by D2 in FIG. 10). In particular, D1 is preferably 1.1 to 3.0 times larger than D2. When the piping member 6D is used in the piping structure 1, 1A, D1 is preferably larger than the outer diameter of the through pipe 7. Here, the outer diameter of the through pipe 7 may be the outer diameter of the vertical wall portion 7a of the through pipe 7. When the piping member 6C is used in the piping structure 1B, D1 is preferably larger than the outer diameter of the second downpipe 42B. Here, the outer diameter of the second downpipe 42B may be the outer diameter of the first vertical pipe 421.

In FIG. 10, D3 is the inner diameter of the auxiliary portion 63. When the piping member 6D is used in the piping structure 1, 1A, D3 is larger than the outer diameter of the through pipe 7 by a predetermined value. The predetermined value is 2 mm or more and 30 mm or less. Here, the outer diameter of the through pipe 7 may be the outer diameter of the vertical wall portion 7a of the through pipe 7. When the piping member 6D is used in the piping structure 1B, D3 is larger than the outer diameter of the second downpipe 42B by a predetermined value. The predetermined value is 2 mm or more and 30 mm or less. Here, the outer diameter of the second downpipe 42B may be the outer diameter of the first vertical pipe 421.

In FIG. 10, H1 is the length of the induction portion 61 in the direction of the central axis C1 of the piping member 6D. In this modified example, H1 is 20 mm or more and 300 mm or less.

In FIG. 10, H3 is the length of the auxiliary portion 63 in the direction of the central axis C1 of the piping member 6D. In this modification, H3 is greater than 0 and is equal to or less than twice H1. This makes it easier to attach the piping member 6D to the downspout portion (4, 4A, 4B).

The piping member 6D described above further includes a cylindrical auxiliary portion 63 that extends downward from the inner circumferential surface of the guide portion 61.

When the piping member 6D is used in the piping structure 1, 1A, the inner diameter of the auxiliary portion 63 is a predetermined value larger than the outer diameter of the through pipe 7. The predetermined value is 2 mm or more and 30 mm or less. This configuration makes it possible to reduce the possibility that foreign matter adhering to the outer surface of the downspout portion 4 will enter the through pipe 7. In the piping structure 1, the auxiliary portion 63 can function to assist the flow of rainwater from the first downspout 42 into the through pipe 7.

When the piping member 6D is used in the piping structure 1B, the inner diameter of the auxiliary portion 63 is larger than the outer diameter of the second downpipe 42B by a predetermined value. The predetermined value is 2 mm or more and 30 mm or less. This configuration makes it possible to reduce the possibility that foreign matter adhering to the outer surface of the downpipe portion 4 will enter the second downpipe 42B. In the piping structure 1B, the auxiliary portion 63 can function to assist the flow of rainwater from the first downpipe 42 to the second downpipe 42B.

[2.3 Modification 3]
11 is a bottom view of a configuration example of a piping member 6E according to Modification 3. The piping member 6E can be used in place of the piping member 6 in each of the piping structures 1, 1A, and 1B of the first, second, and third embodiments.

The piping member 6E in FIG. 11 includes a guide portion 61E and an attachment portion 62. In this modified example, the guide portion 61E and the attachment portion 62 are formed as a continuous unit. In this modified example, the guide portion 61E extends from the attachment portion 62. In particular, the guide portion 61E extends from the lower end of the attachment portion 62. The material of the piping member 6E is, for example, rigid polyvinyl chloride.

The induction section 61E is cylindrical and increases in size from the upstream end toward the downstream end. In this modified example, the induction section 61E is hollow and frustum-shaped. The outer and inner peripheral shapes of the induction section 61E in a plane perpendicular to the central axis C1 of the piping member 6E are elliptical. The outer and inner peripheral shapes of the induction section 61E in a plane perpendicular to the central axis C1 of the piping member 6E increase in size from the upstream end toward the downstream end of the piping member 6E.

Next, the dimensions of the piping member 6E, particularly the dimensions of the induction portion 61E, will be described with reference to FIG. 11. As described above, the inner peripheral shape of the induction portion 61E is elliptical, so that the opening 61a at the lower end of the induction portion 61E has different dimensions in a plane perpendicular to the central axis C1 of the piping member 6E. In FIG. 11, the opening 61a at the lower end of the induction portion 61E has a first dimension D11 and a second dimension D12. The first dimension D11 is the dimension in a first direction perpendicular to the central axis C1 of the piping member 6E. The second dimension D12 is the dimension in a second direction perpendicular to the central axis C1 of the piping member 6E but different from the first direction. In FIG. 11, the first direction and the second direction correspond to the major axis direction and the minor axis direction, respectively, of the opening 61a at the lower end of the induction portion 61E.

When the piping member 6E is used in the piping structure 1, 1A, the first dimension D11 is 1.1 to 3 times the inner diameter D2 of the mounting portion 62, and the second dimension D12 is greater than the outer diameter of the through pipe 7. The outer diameter of the through pipe 7 may be the outer diameter of the vertical wall portion 7a of the through pipe 7.

When the piping member 6E is used in the piping structure 1B, the first dimension D11 is 1.1 to 3 times the inner diameter D2 of the mounting portion 62, and the second dimension D12 is greater than the outer diameter of the second downpipe 42B. The outer diameter of the second downpipe 42B may be the outer diameter of the first vertical pipe 421.

However, the first direction and the second direction do not necessarily have to correspond to the major axis direction and the minor axis direction, respectively, of the opening 61a at the lower end of the induction section 61E. As an example, the first direction and the second direction may necessarily correspond to the minor axis direction and the major axis direction, respectively, of the opening 61a at the lower end of the induction section 61E. In other words, the relationship between the first dimension D11 and the second dimension D12 does not matter.

The piping member 6E described above further includes a cylindrical mounting portion 62 into which the downspout portion (4, 4A, 4B) fits. The guide portion 61E extends from the mounting portion 62. The opening 61a at the lower end of the guide portion 61E has a first dimension D11 in a first direction perpendicular to the central axis C1 of the piping member 6E, and a second dimension D12 in a second direction perpendicular to the central axis C1 of the piping member 6E but different from the first direction.

When the piping member 6E is used in the piping structure 1, 1A, the first dimension D11 is 1.1 to 3 times the inner diameter D2 of the mounting portion 62, and the second dimension D12 is greater than the outer diameter of the through pipe 7. This configuration makes it possible to reduce the possibility that foreign matter adhering to the outer surface of the downspout portion 4 will enter the through pipe 7.

When the piping member 6E is used in the piping structure 1B, the first dimension D11 is 1.1 to 3 times the inner diameter D2 of the mounting portion 62, and the second dimension D12 is greater than the outer diameter of the second downspout 42B. This configuration makes it possible to reduce the possibility that foreign matter adhering to the outer surface of the downspout portion 4 will enter the second downspout 42B.

[2.4 Other Modifications]
Other modified examples will be described below. Although the symbols used in the first embodiment will be referred to below even if they are applicable to any of the above-mentioned first to third embodiments and modified examples 1 to 3, this is merely for the purpose of simplifying the description and is not intended to exclude application to the second and third embodiments and modified examples 1 to 3.

In one modified example, the shape and size of the piping member 6 may be different from the above embodiment and modified example. For example, unlike the above embodiment, the induction portion 61 of the piping member 6 may be a hollow pyramid shape. The outer peripheral shape and/or inner peripheral shape of the induction portion 61 in a plane perpendicular to the central axis C1 of the piping member 6 may be a polygonal shape rather than a circular shape. Therefore, as in modified example 3, the opening 61a at the lower end of the induction portion 61 may have a first dimension in a first direction perpendicular to the central axis C1 of the piping member 6, and a second dimension in a second direction perpendicular to the central axis C1 of the piping member 6 but different from the first direction. The first dimension may be 1.1 to 3 times the inner diameter of the mounting portion 62, and the second dimension may be larger than the outer diameter of the through pipe 7 or the outer diameter of the second downspout 42B. In the above embodiment and modified example, the outer and inner surfaces of the guide portion 61 are linear in the cross section of the guide portion 61 in a plane including the central axis C1 of the piping member 6, but in modified examples, they may be curved or broken.

In one modified example, the guide portion 61 and the attachment portion 62 of the piping member 6 do not have to be formed as a continuous unit. For example, the guide portion 61 and the attachment portion 62 may be mechanically connected by assembly or the like. The material of the guide portion 61 and the material of the attachment portion 62 may be different. Similarly, the guide portion 61 and the auxiliary portion 63 do not have to be formed as a continuous unit. For example, the guide portion 61 and the auxiliary portion 63 may be mechanically connected by assembly or the like. The material of the guide portion 61 and the auxiliary portion 63 may be different.

In one modified example, the piping member 6 may be provided integrally and continuously with the downspout section 4. As an example, the guide section 61 may be provided integrally and continuously with the downspout section 4. In this case, there is no need to use the attachment section 62.

In one modified example, at least one of the materials of the downspout section 4, the branch pipe 5, the piping member 6, and the through pipe 7 does not necessarily have to be rigid polyvinyl chloride. The materials of the downspout section 4, the branch pipe 5, the piping member 6, and the through pipe 7 may be determined according to the requirements of the piping structure 1, and may be, for example, a synthetic resin such as polyethylene, or may be a metal instead of a synthetic resin.

In one modified example, the dimensions of the downspout section 4 and the branch pipe 5 do not necessarily have to be set in accordance with the provisions of JIS K 6741.

In one modified example, the piping structure 1 does not necessarily have to include the first eaves gutter 31. For example, if the building has a structure with an outlet such as a balcony, the downspout section 4 may be connected to the outlet of the building.

In one modified example, the piping structure 1 does not necessarily have to include the second eaves gutter 32. For example, if the building has a structure with an outlet such as a balcony, the branch pipe 5 may be connected to the outlet of the building.

In one modified example, the piping structure 1 may correspond to multiple outlets 32b of the second eaves gutter 32. In the piping structure 1, multiple branch pipes 5 may be connected to one or more junctions 423 of the vertical gutter section 4.

In one modified example, the downspout section 4 may have a different configuration from the above embodiment. For example, the first downspout 41 of the downspout section 4 may be composed of multiple pipe materials rather than a single pipe material. For example, the second downspout 42 of the downspout section 4 may have other piping components such as a call pipe in addition to the first vertical pipe 421, the second vertical pipe 422, and the junction 423. In the second downspout 42, the number of first vertical pipes 421, the number of second vertical pipes 422, and the number of junctions 423 are not particularly limited.

In one modified example, the branch pipe 5 may have a configuration different from that of the above embodiment. The branch pipe 5 may have other piping components in addition to the vertical pipe 51, horizontal pipe 52, and elbow 53. The number of vertical pipes 51, horizontal pipes 52, and elbows 53 in the branch pipe 5 is not particularly limited. The elbow 53 is not limited to a 90° bent elbow as specified in JIS K 6739, and may be a 45° elbow.

In one modified example, the upstream end 42a of the second downspout 42 may be located inside the through pipe 7. In other words, the second downspout 42 may pass through the opening 32c in the bottom wall 32a of the second eaves gutter 32 through the through pipe 7.

3. Aspects
As is clear from the above-mentioned embodiment and modified examples, the present disclosure includes the following aspects. In the following, symbols are given in parentheses only to clarify the correspondence with the embodiment. Note that, in consideration of the readability of the text, the description of the symbol in parentheses from the second time onwards may be omitted.

The first aspect is a piping member (6; 6C; 6D; 6E) constituting a part of a piping structure (1; 1A; 1B). The piping structure (1; 1A; 1B) includes a first eaves gutter (31), a second eaves gutter (32) below the first eaves gutter (31), and a vertical gutter section (4; 4A; 4B) extending downward from the drop outlet (31b) of the first eaves gutter (31) and passing through an opening (32c) in the bottom wall (32a) of the second eaves gutter (32) while being separated from the second eaves gutter (32) in terms of flow path. The piping member (6; 6C; 6D; 6E) is attached to the vertical gutter section (4; 4A; 4B) between the first eaves gutter (31) and the second eaves gutter (32). The piping member (6; 6C; 6D; 6E) has a cylindrical guide portion (61; 61E) whose size increases from the first eaves gutter (31) to the second eaves gutter (32). This aspect makes it possible to reduce the adverse effects of foreign matter adhering to the outer surface of the vertical gutter portion (4; 4A; 4B).

The second aspect is a piping member (6; 6C; 6D; 6E) based on the first aspect. In this aspect, the piping member (6; 6C; 6D; 6E) further includes a cylindrical mounting portion (62) into which the downspout portion (4; 4A; 4B) fits. The guide portion (61; 61E) extends from the mounting portion (62). This aspect facilitates the work of attaching the piping member (6; 6C; 6D; 6E) to the downspout portion (4; 4A; 4B).

The third aspect is a piping member (6C) based on the second aspect. In this aspect, the upper end of the guide portion (61) is higher than the lower end of the attachment portion (62). The distance (H22) from the upper end of the guide portion (61) to the lower end of the attachment portion (62) in the direction of the central axis (C1) of the piping member (6C) is greater than 0 and is equal to or less than twice the length (H1) of the guide portion (61; 61E) in the direction of the central axis (C1) of the piping member (6C). This aspect makes it easier to attach the piping member (6; 6C; 6D; 6E) to the downspout portion (4; 4A; 4B).

The fourth aspect is a piping member (6; 6C; 6D; 6E) based on any one of the first to third aspects. In this aspect, the length (H1) of the guide portion (61; 61E) in the direction of the central axis (C1) of the piping member (6; 6C; 6D; 6E) is 20 mm or more and 300 mm or less. This aspect makes it possible to reduce the adverse effects of foreign matter adhering to the outer surface of the downspout portion (4; 4A; 4B).

The fifth aspect is a piping member (6; 6C; 6D; 6E) based on any one of the first to fourth aspects. In this aspect, the downspout portion (4; 4B) includes a first downspout (41) extending downward from the outlet of the first eaves gutter (31) and a second downspout (42; 42B) extending downward from the opening of the second eaves gutter (32). The second downspout (42; 42B) is disposed below the first downspout (41) and spaced apart from the first downspout (41). The piping member (6; 6C; 6D; 6E) is attached to the first downspout (41) so as not to come into contact with the second downspout (42; 42B). In this embodiment, the first downspout (41) and the second downspout (42; 42B) are not connected, making it easier to attach the piping members (6; 6C; 6D; 6E) to the downspout portion (4; 4B).

The sixth aspect is a piping member (6; 6C; 6D; 6E) based on the fifth aspect. In this aspect, the piping structure (1) further includes a through pipe (7) that penetrates the opening (32c) of the second eaves gutter (32). The upstream end (42a) of the second downspout (42) is connected to the through pipe (7). The first downspout (41) is disposed above the through pipe (7) and spaced apart from the through pipe (7). The piping member (6; 6C; 6D; 6E) is attached to the first downspout (41) so as not to come into contact with the through pipe (7). This aspect can reduce the possibility of damage to the through pipe (7) due to impact caused by horizontal movement of the first downspout (41).

The seventh aspect is a piping member (6E) based on the sixth aspect. In this aspect, the piping member (6E) further includes a cylindrical mounting portion (62) into which the downspout portion (4) fits. The guide portion (61; 61E) extends from the mounting portion (62). The opening (61a) at the lower end of the guide portion (61E) has a first dimension (D11) in a first direction perpendicular to the central axis (C1) of the piping member (6E) and a second dimension (D12) in a second direction perpendicular to the central axis (C1) of the piping member (6E) but different from the first direction. The first dimension (D11) is 1.1 to 3 times the inner diameter of the mounting portion (62). The second dimension (D12) is greater than the outer diameter of the through pipe (7). This aspect reduces the possibility of foreign matter adhering to the outer surface of the downspout section (4) entering the penetration pipe (7).

The eighth aspect is a piping member (6D) based on the sixth or seventh aspect. In this aspect, the piping member (6D) further includes a cylindrical auxiliary portion (63) extending downward from the inner peripheral surface of the guide portion (61; 61E). The inner diameter of the auxiliary portion (63) is larger than the outer diameter of the through pipe (7) by a predetermined value. The predetermined value is 2 mm or more and 30 mm or less. This aspect makes it possible to reduce the possibility that foreign matter adhering to the outer surface of the downspout portion (4) will enter the through pipe (7).

The ninth aspect is a piping member (6; 6C; 6D; 6E) based on the fifth aspect. In this aspect, the second downspout (42B) penetrates the opening (32c) of the second eaves gutter (32). The second downspout (42B) is disposed below the first downspout (41) and spaced apart from the first downspout (41). The piping member (6; 6C; 6D; 6E) is attached to the first downspout (41) so as not to come into contact with the second downspout (42B). This aspect makes it possible to reduce the possibility that foreign matter adhering to the outer surface of the downspout portion (4B) will enter the second downspout (42B).

The tenth aspect is a piping member (6E) based on the ninth aspect. In this aspect, the piping member (6; 6C; 6D; 6E) further includes a cylindrical mounting portion (62) into which the downspout portion (4B) fits. The guide portion (61; 61E) extends from the mounting portion (62). The opening (61a) at the lower end of the guide portion (61; 61E) has a first dimension (D11) in a first direction perpendicular to the central axis (C1) of the piping member (6E) and a second dimension (D12) in a second direction perpendicular to the central axis (C1) of the piping member (6E) but different from the first direction. The first dimension (D11) is 1.1 times or more and 3 times or less the inner diameter of the mounting portion (62). The second dimension (D12) is greater than the outer diameter of the second downspout (42B). This aspect makes it possible to reduce the possibility of foreign matter adhering to the outer surface of the downspout portion (4B) entering the second downspout (42B).

The eleventh aspect is a piping member (6D) based on the ninth or tenth aspect. In this aspect, the piping member (6D) further includes a cylindrical auxiliary portion (63) extending downward from the inner peripheral surface of the guide portion (61; 61E). The inner diameter of the auxiliary portion (63) is larger than the outer diameter of the second downspout (42B) by a predetermined value. The predetermined value is 2 mm or more and 30 mm or less. This aspect makes it possible to reduce the possibility that foreign matter adhering to the outer surface of the downspout portion (4) will enter the second downspout (42B).

The twelfth aspect is a piping member (6; 6C; 6D; 6E) based on any one of the first to fourth aspects. In this aspect, the downspout portion (4A) includes a downspout (first downspout 41A) that extends downward from the drop outlet (31b) of the first eaves gutter (31) and passes through the opening (32c) of the second eaves gutter (32). The piping member (6; 6C; 6D; 6E) is attached to the downspout (first downspout 41A) between the first eaves gutter (31) and the second eaves gutter (32). This aspect makes it possible to reduce the possibility of foreign matter adhering to a portion of the downspout portion (4A) below the second eaves gutter (32).

The thirteenth aspect is a piping structure (1; 1B) comprising a piping member (6; 6C; 6D; 6E) according to any one of the first to eleventh aspects, the first eaves gutter (31), the second eaves gutter (32), and the downspout section (4; 4B). The downspout section (4; 4B) includes a first downspout (41) extending downward from a drop outlet (31b) of the first eaves gutter (31), and a second downspout (42; 42B) extending downward from an opening (32c) of the second eaves gutter (32). The second downspout (42; 42B) is disposed below the first downspout (41) and spaced apart from the first downspout (41). The piping member (6; 6C; 6D; 6E) is attached to the first downspout (41) so as not to come into contact with the second downspout (42; 42B). This aspect makes it possible to reduce adverse effects caused by foreign matter adhering to the outer surface of the downspout portion (4; 4A; 4B). This aspect makes it easier to attach the piping member (6; 6C; 6D; 6E) to the downspout portion (4; 4B) because the first downspout (41) and the second downspout (42; 42B) are not connected.

The fourteenth aspect is a piping structure (1; 1B) based on the thirteenth aspect. In this aspect, the piping structure (1; 1B) further includes a drain (81) arranged at the outlet (31b) of the first eaves gutter (31) and a branch pipe (5) connected to the outlet (32b) of the second eaves gutter (32). The second downpipe (42; 42B) includes a junction (423) connected to the branch pipe (5) below the second eaves gutter (32). This aspect makes it possible to use the downpipe section (4; 4B) for draining water from the first eaves gutter (31) and for draining water from the second eaves gutter (32).

The fifteenth aspect is a piping structure (1A) comprising the piping member (6; 6C; 6D; 6E) according to any one of the first to eleventh aspects, the first eaves gutter (31), the second eaves gutter (32), and the downspout section (4A). The downspout section (4A) includes a downspout (first downspout 41A) extending downward from the drop opening (31b) of the first eaves gutter (31) and penetrating the opening (32c) of the second eaves gutter (32). The piping member (6; 6C; 6D; 6E) is attached to the downspout (first downspout 41A) between the first eaves gutter (31) and the second eaves gutter (32). This aspect makes it possible to reduce adverse effects caused by foreign matter adhering to the outer surface of the downspout section (4A). This aspect reduces the possibility of foreign matter adhering to the downspout section (4A) below the second eaves gutter (32).

The above aspects 2 to 11 and 14 are optional.

The present disclosure is applicable to piping components and piping structures. Specifically, the present disclosure is applicable to a piping structure that includes a first eaves gutter and a second eaves gutter below the first eaves gutter, and to piping components that form part of the piping structure.

1, 1A, 1B Piping structure 31 First eaves gutter 31b Drop opening 32 Second eaves gutter 32a Bottom wall 32b Drop opening 32c Opening 4, 4A, 4B Downspout section 41, 41A First downspout 42, 42A, 42B Second downspout 42a Upstream end 5 Branch pipe 6, 6C, 6D, 6E Piping member 61, 61E Guide section 61a Opening 62 Mounting section 63 Auxiliary section 7 Through pipe 81 Drain

Claims (15)

A piping member constituting a part of a piping structure,
The piping structure includes:
The first gutter,
A second gutter located below the first gutter;
a vertical gutter portion extending downward from a drop opening of the first eaves gutter and passing through an opening in a bottom wall of the second eaves gutter while being separated from the second eaves gutter in terms of a flow path;
Equipped with
The piping member is attached to the downspout portion between the first eaves gutter and the second eaves gutter,
The piping member includes a cylindrical guide portion whose size increases from the first eaves gutter toward the second eaves gutter.
Piping components. The downspout portion further includes a cylindrical mounting portion into which the downspout portion fits,
The guide portion extends from the mounting portion.
The piping member according to claim 1 . An upper end of the guide portion is located above a lower end of the mounting portion,
A distance from an upper end of the guide portion to a lower end of the attachment portion in a direction of a central axis of the piping member is greater than 0 and is equal to or less than twice the length of the guide portion in the direction of the central axis of the piping member.
The piping member according to claim 2 . The length of the guide portion in the direction of the central axis of the piping member is 20 mm or more and 300 mm or less.
The piping member according to claim 1 . The downspout portion is
a first downspout extending downward from a drop outlet of the first eaves gutter;
a second downspout extending downward from an opening of the second eaves gutter;
Including,
The second downspout is disposed below the first downspout and spaced apart from the first downspout,
The piping member is attached to the first downpipe so as not to contact the second downpipe.
The piping member according to any one of claims 1 to 4. The piping structure further includes a through pipe that passes through an opening of the second eaves gutter,
The upstream end of the second downpipe is connected to the through pipe,
The first downspout is disposed above the through pipe and spaced apart from the through pipe,
The piping member is attached to the first downspout so as not to contact the through pipe.
The piping member according to claim 5 . The downspout portion further includes a cylindrical mounting portion having an opening into which the downspout portion fits,
The guide portion extends from the mounting portion,
The opening at the lower end of the induction portion is
a first dimension in a first direction perpendicular to a central axis of the piping member;
a second dimension in a second direction perpendicular to a central axis of the piping member but different from the first direction;
having
the first dimension is greater than or equal to 1.1 times and less than or equal to 3 times the inner diameter of the mounting portion,
The second dimension is greater than an outer diameter of the through pipe.
The piping member according to claim 6. Further comprising a cylindrical auxiliary portion extending downward from an inner circumferential surface of the guide portion,
The inner diameter of the auxiliary portion is larger than the outer diameter of the through pipe by a predetermined value,
The predetermined value is 2 mm or more and 30 mm or less.
The piping member according to claim 6. The second downspout passes through an opening of the second eaves gutter,
The second downspout is disposed below the first downspout and spaced apart from the first downspout,
The piping member is attached to the first downpipe so as not to contact the second downpipe.
The piping member according to claim 5 . The downspout portion further includes a cylindrical mounting portion having an opening into which the downspout portion fits,
The guide portion extends from the mounting portion,
The opening at the lower end of the induction portion is
a first dimension in a first direction perpendicular to a central axis of the piping member;
a second dimension in a second direction perpendicular to a central axis of the piping member but different from the first direction;
having
the first dimension is greater than or equal to 1.1 times and less than or equal to 3 times the inner diameter of the mounting portion,
The second dimension is greater than an outer diameter of the second downspout;
The piping member according to claim 9 . Further comprising a cylindrical auxiliary portion extending downward from an inner circumferential surface of the guide portion,
The inner diameter of the auxiliary portion is larger than the outer diameter of the second downspout by a predetermined value,
The predetermined value is 2 mm or more and 30 mm or less.
The piping member according to claim 9 . The downspout portion includes a downspout extending downward from a drop opening of the first eaves gutter and penetrating an opening of the second eaves gutter,
The piping member is attached to the downpipe between the first eaves gutter and the second eaves gutter.
The piping member according to any one of claims 1 to 4. A piping member according to any one of claims 1 to 4,
The first eaves gutter;
The second eaves gutter;
The downspout portion,
Equipped with
The downspout portion is
a first downspout extending downward from a drop outlet of the first eaves gutter;
a second downspout extending downward from an opening of the second eaves gutter;
Including,
The second downspout is disposed below the first downspout and spaced apart from the first downspout,
The piping member is attached to the first downspout so as not to contact the second eaves gutter.
Piping structure. A drain disposed at the outlet of the first eaves gutter;
A branch pipe connected to the outlet of the second eaves gutter;
Further comprising:
The second downpipe has a junction portion connected to the branch pipe below the second eaves gutter.
The piping structure according to claim 13. A piping member according to any one of claims 1 to 4,
The first eaves gutter;
The second eaves gutter;
The downspout portion,
Equipped with
The downspout portion includes a downspout extending downward from a drop opening of the first eaves gutter and penetrating an opening of the second eaves gutter,
The piping member is attached to the downpipe between the first eaves gutter and the second eaves gutter.
Piping structure.