Downpipe drainage structure, roof structure equipped with downpipe drainage structure, and maintenance method for downpipe drainage structure

Abstract

To provide a drainage structure for downpipes, a roof structure equipped with a drainage structure for downpipes, and a maintenance method for a drainage structure for downpipes. [Solution] A drainage structure 60 for a downpipe 2A that discharges water passing through the inside of the downpipe 2A via a drainage opening 252 provided in the downpipe 2A, comprising: a water guide section 61 connected to the drainage opening 252 of the downpipe 2A, which guides the water drained from the drainage opening 252 in a direction intersecting the opening direction of the drainage opening 252 and has a maintenance opening 614 positioned on the extension of the opening direction of the drainage opening 252; and a maintenance cap 62 that is detachably attached to the maintenance opening 614.

Description

Technical Field

[0001] The present disclosure relates to a drainage structure of a vertical gutter, a roof structure including the drainage structure of the vertical gutter, and a maintenance method of the drainage structure of the vertical gutter.

Background Art

[0002] Conventionally, a drainage structure of a vertical gutter in which a water conduit is attached to the lower end of the vertical gutter has been known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the drainage structure of the vertical gutter described in Patent Document 1, the lower end of the vertical gutter and the water conduit (water guiding portion) are connected, and a sealing material is applied to the connection portion between the lower end of the vertical gutter and the water conduit. Therefore, when the water conduit is once attached, it is difficult to remove the water conduit, and when dust or the like accumulates at the lower end of the vertical gutter, it is difficult to perform maintenance. Therefore, it is desired to improve the maintainability of the vertical gutter.

[0005] An object of the present disclosure is to provide a drainage structure of a vertical gutter, a roof structure including the drainage structure of the vertical gutter, and a maintenance method of the drainage structure of the vertical gutter that can improve maintainability.

Means for Solving the Problems

[0006] This disclosure relates to a drainage structure for a downpipe that discharges water passing through the inside of the downpipe via a drainage opening provided in the downpipe, comprising: a water guide section connected to the drainage opening of the downpipe, which guides the water discharged from the drainage opening in a direction intersecting the opening direction of the drainage opening and has a maintenance opening positioned on the extension of the opening direction of the drainage opening; and a maintenance cap detachably attached to the maintenance opening. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view of a carport according to one embodiment, seen from an oblique upward angle. [Figure 2] This is a cross-sectional view along line AA in Figure 1. [Figure 3A] This is a perspective view of the drainage structure of the support column, seen from diagonally above one side in the left-right direction. [Figure 3B] This is a perspective view of the drainage structure of the support column, seen from diagonally above the other side in the left-right direction. [Figure 4] Figure 3A is a perspective view showing the drainage structure of the support column with the cover member removed. [Figure 5] Figure 4 is an exploded perspective view of the drainage structure of the support column, seen from diagonally above the other side in the left-right direction. [Figure 6] Figure 5 is an exploded perspective view of the drainage structure of the support column, seen from diagonally above one side in the left-right direction. [Figure 7] Figure 4 is a cross-sectional view along line BB. [Figure 8] Figure 4 is a cross-sectional view along the CC line. [Figure 9] This is a perspective view showing the maintenance cap removed from the drainage structure of the support column. [Figure 10] This is a side view showing the maintenance cap removed from the drainage structure of the support column. [Figure 11] Figure 4 is a cross-sectional view along the DD line. [Figure 12] Figure 4 is a cross-sectional view along the EE line. [Modes for carrying out the invention]

[0008] Hereinafter, an embodiment of a roof structure equipped with the drainage structure for the support columns of this disclosure will be described with reference to the drawings. In this embodiment, an example in which the roof structure is applied to a carport 1 will be described. However, this embodiment is not limited to an example in which the roof structure is applied to a carport 1. For example, the roof structure may be applied to structures other than carports, such as terraces, bicycle parking areas, shelters, rest areas, bus stops, etc.

[0009] In this description of the embodiment, in Figure 1, the direction in which the multiple long profiles 41 (long members) constituting the roof body 4 of the carport 1 extend is also referred to as the front-rear direction Y (long direction of the long profiles 41). In the front-rear direction Y, the rear side of the carport 1 is also referred to as the rear side Y1, and the front side of the carport 1 is also referred to as the front side Y2. Furthermore, the direction perpendicular to the front-rear direction Y in which the long profiles 41 (long members) extend is also referred to as the left-right direction X (intersecting direction that intersects the long direction of the long profiles 41). In the left-right direction X, the side opposite to the support column 2 when viewed from the front is also referred to as one side X1 of the carport 1, and the side with the support column 2 when viewed from the front is also referred to as the other side X2 of the carport 1. Furthermore, in the direction in which the beam 3 extends, the side opposite to the support column 2 is also referred to as the tip side of the carport 1, and the side with the support column 2 is also referred to as the base side of the carport 1.

[0010] First, the overall structure of the carport 1 of this embodiment will be described. As shown in Figure 1, the carport 1 is a so-called cantilevered carport in which the roof body 4 is supported by a pair of support columns 2 at the base end side (left rear side in Figure 1) in the left-right direction X. Note that the carport is not limited to a cantilevered structure, and a double-supported (double-supported) carport is also possible. Furthermore, the carport 1 of this embodiment is composed of a suspension structure in which the roof body 4 is suspended and connected to the lower part (below) of the beam 3 connected to the support columns 2. Note that the roof body 4 is not limited to a suspension structure, and a roof-mounted type in which the roof body 4 is placed on top (above) the beam 3 is also possible.

[0011] The carport 1 of this embodiment includes a pair of columns 2 (vertical gutters) erected on the ground, two beams 3 extending from the upper end portions of each of the pair of columns 2 in a direction intersecting the columns 2, and a roof body 4 connected to the lower portions of the two beams 3. The plurality of long-shaped members 41 constituting the columns 2, the beams 3, and the roof body 4 are formed of extruded profiles of an aluminum material.

[0012] As shown in FIG. 1, the pair of columns 2 are arranged spaced apart in the front-rear direction Y of the carport 1 on the proximal end side (the left back side in FIG. 1) of the carport 1. As shown in FIGS. 1 and 2, the column 2 has a hollow column main body portion 21 whose cross section is formed in a square tube shape, and a pair of cover mounting walls 22 that protrude from the side surface of the column main body portion 21 on the roof body 4 side toward the roof body 4 side and extend in the vertical direction. A column cover member 23 is attached to the pair of cover mounting walls 22.

[0013] In the column 2A on the front side Y2 in the front-rear direction Y among the pair of columns 2, water discharged from the roof side gutter structure 40 (described later) of the roof body 4 flows between the column main body portion 21 and the column cover member 23. Since water discharged from the roof side gutter structure 40 (described later) flows into and between the column main body portion 21 and the column cover member 23, as shown in FIG. 2, the column main body portion 21 and the column cover member 23 are configured as a column side gutter structure 20. That is, the column 2 constitutes a vertical gutter. In this embodiment, no rain gutter hose or the like is arranged between the column main body portion 21 and the column cover member 23, and only the column main body portion 21 and the column cover member 23 constitute the vertical gutter.

[0014] As shown in FIG. 1, a drainage guiding component 6 is provided at the lower end portion of the column 2A on the front side Y2 in the front-rear direction Y. The drainage guiding component 6 guides the water flowing through the column side gutter structure 20 constituted by the column main body portion 21 and the column cover member 23 to the outside on the other side X2 in the left-right direction X and discharges it.

[0015] A pair of beams 3 are arranged spaced apart in the front-rear direction Y of the carport 1. The pair of beams 3 each extend in the left-right direction X and are formed with a downward slope that slopes downward toward the support column 2 side. The roof body 4 is arranged below the beams 3. As shown in FIG. 2, the roof body 4 has a hanging structure in which the roof body 4 is hung and arranged below the pair of beams 3 and is attached (connected) to the lower portions of the pair of beams 3. The roof body 4 is configured by a plurality of long members 41 (long materials) arranged side by side in the direction in which the beams 3 extend and fitted and connected to each other.

[0016] Among the plurality of long members 41 (long materials), the member closest to the support column 2 side constitutes the gutter-forming member 42. The gutter-forming member 42 is arranged in parallel at the end on the proximal end side (support column 2 side) in the direction in which the plurality of long members 41 are arranged in the roof body 4 and is formed by a long member having a U-shaped cross section with the upper side opening upward. Among the plurality of long members 41 (long materials) other than the gutter-forming member 42, they have a hollow structure having a hollow portion with a hollow cross section.

[0017] The gutter-forming member 42 constitutes a roof-side gutter structure 40 that receives and distributes the water that has flowed from the upper surface of the roof body 4 to the proximal end side and reached the proximal end side at the most proximal end of the roof body 4 on the support column 2 side. As shown in FIG. 2, a guiding member 43 is connected to the side surface of the roof-side gutter structure 40. The guiding member 43 guides the water that has flowed into and stagnated in the roof-side gutter structure 40 to the support-column-side gutter structure 20.

[0018] The water guided to the support-column-side gutter structure 20 by the guiding member 43 flows from the upper side to the lower side inside the support-column-side gutter structure 20 constituted by the support column main body portion 21 and the support column cover member 23 and is discharged to the outside by a drainage guiding component 6 provided at the lower portion of the support column 2.

[0019] Next, the drainage structure 60 (downpipe drainage structure) of the support column 2A according to this disclosure will be described. As shown in Figure 1, the drainage structure 60 of the support column 2A is configured such that a drainage guide component 6 is provided at the lower end of the support column 2A. As shown in Figures 3A to 6, a lateral drainage section 25 is provided at the lower end of the support column 2A to discharge water passing through the inside of the support column 2A. A sealing material (not shown) is applied to the connection between the lateral drainage section 25 and the support column 2A.

[0020] The drainage structure 60 of the support column 2A discharges water passing through the support column side gutter structure 20 inside the support column 2A (downpipe) to the outside via the side drainage opening cylindrical portion 252 (drainage opening) of the side drainage section 25 provided on the lower end side of the support column 2A.

[0021] As shown in Figures 5 and 6, the lateral drain section 25 is attached to the lower end portion of the side surface of one end X1 in the left-right direction X of the support column 2A. The lateral drain section 25 has a water receiving section 251 located inside the support column 2A, and a lateral drain opening cylinder section 252 (drain opening) that discharges the water received by the water receiving section 251 to the side of the front Y2 of the support column 2A in the front-rear direction Y.

[0022] The water receiving section 251 receives water passing through the column-side gutter structure 20 inside the column 2A. The lateral drainage opening pipe section 252 is formed on the front side Y2 of the lateral drainage section 25 in the front-rear direction Y.

[0023] The lateral drainage opening tubular portion 252 is formed on the side surface of the front Y2 in the front-to-back direction Y of the lower end portion of the lower part of the support column 2A, opening toward the side of the front Y2 in the front-to-back direction Y of the carport 1. The lateral drainage opening tubular portion 252 is formed in a vertically elongated rectangular shape with the opening portion extending in the vertical direction. The lateral drainage opening tubular portion 252 is formed surrounded by a rectangular cylindrical wall that protrudes from the side surface of the front Y2 in the front-to-back direction Y of the carport 1 on the support column 2A toward the side of the front Y2 in the front-to-back direction Y.

[0024] The lateral drain section 25 is configured to be attachable to the lower end of the support column 2A with the orientation of the lateral drain opening section 252 rotated by 180 degrees while maintaining a horizontal position. This allows the lateral drain section 25 to be attached in either the direction in which the lateral drain opening section 252 opens toward the front side Y2 of the carport 1 in the front-rear direction Y, or toward the rear side Y1 of the carport 1 in the front-rear direction Y, on the support column 2A. In this embodiment, the lateral drain section 25 is attached to the lower end of the support column 2A such that the lateral drain opening section 252 opens toward the front side Y2 of the carport 1 in the front-rear direction Y.

[0025] The drainage guidance component 6 will now be described. The drainage guidance component 6 changes the direction of the water that flows through the column-side gutter structure 20 of the column 2A and is discharged from the lateral drainage opening pipe portion 252 of the lateral drainage section 25 to the front side Y2 in the front-rear direction Y, and guides it toward the other side X2 in the left-right direction X of the carport 1. As shown in Figures 4 to 8, the drainage guidance component 6 comprises a vertical gutter water guide member 61 (water guide section), a maintenance cap 62, an intermediate connecting member 63, a drainage guidance pipe 64, a drainage guidance pipe holding member 65, and a cover member 7.

[0026] The downpipe water guide member 61 is connected to the lateral drainage opening cylindrical portion 252 of the lateral drainage section 25 of the support column 2A. The downpipe water guide member 61 is positioned on the side of the support column 2A by being fitted into the lateral drainage opening cylindrical portion 252 of the lateral drainage section 25 of the support column 2A. The downpipe water guide member 61 is formed of, for example, a hard resin material. A sealant (not shown) is applied to the connection portion between the downpipe water guide member 61 and the lateral drainage opening cylindrical portion 252 of the lateral drainage section 25 of the support column 2A.

[0027] As shown in Figures 5 and 6, the downpipe water guide member 61 has a water guide member body 611 (water guide section body), a drain outlet connection part 612 (inlet opening), a drain outlet opening 613 (outlet opening), and a maintenance opening 614.

[0028] As shown in Figure 8, the water guiding member body 611 has a substantially L-shaped cross-sectional shape when cut horizontally. The water guiding member body 611 has a first flow path R1 formed along the opening direction of the lateral drainage opening cylindrical portion 252 of the lateral drainage portion 25 of the support column 2A, and a second flow path R2 extending from the front Y2 end of the first flow path R1 in the front-rear direction Y in a direction intersecting the first flow path R1.

[0029] The water guiding member body 611 has a first flow path R1 and a second flow path R2, which changes the direction in which water discharged from the lateral drainage opening pipe portion 252 of the lateral drainage section 25 of the support column 2A is guided out, from the direction in which the lateral drainage opening pipe portion 252 of the lateral drainage section 25 of the support column 2A opens and the direction in which the first flow path R1 extends (front-to-back direction Y of the carport 1) to the direction in which the second flow path R2 extends and intersects the lateral drainage opening pipe portion 252 of the lateral drainage section 25 of the support column 2A (left-to-right direction X of the carport 1).

[0030] As a result, the downspout water guide member 61 directs the water drained from the lateral drainage opening tubular portion 252 of the lateral drainage section 25 of the support column 2A along the first flow path R1, and then changes the direction of water flow at the front end Y2 of the first flow path R1 to flow along the second flow path R2 which intersects the first flow path R1, thereby guiding the water in a direction that intersects the opening direction of the lateral drainage opening tubular portion 252 of the lateral drainage section 25 of the support column 2A (the lateral direction Y of the carport 1) (the other side X2 of the left-right direction X of the carport 1).

[0031] As shown in Figure 8, the drain port connection portion 612 opens toward the rear Y1 in the front-rear direction Y at the rear end of the L-shaped flow path of the water guiding member body 611. The drain port connection portion 612 is connected by fitting into the lateral drain opening cylindrical portion 252 of the lateral drain portion 25 of the support column 2A.

[0032] The drain outlet opening 613 is formed as a vertically elongated rectangular cylinder at the other end X2 in the left-right direction X of the L-shaped flow path of the water guiding member body 611, opening toward the other end X2 in the left-right direction X that intersects with the front-rear direction Y, which is the opening direction of the drain outlet connection part 612. An intermediate connecting member 63 is attached to the drain outlet opening 613. A protruding plate portion 616 is formed at the rear end Y1 in the left-right direction X of the cylindrical drain outlet opening 613, protruding outward in a direction perpendicular to the opening direction of the drain outlet opening 613. When the intermediate connecting member 63 is attached to the downpipe water guiding member 61, the rear end Y1 in the left-right direction X of the rectangular parallelepiped portion 631 (described later) of the intermediate connecting member 63 abuts against the protruding plate portion 616.

[0033] As shown in Figure 8, the maintenance opening 614 is formed in a cylindrical shape that opens toward the front Y2 in the front-rear direction Y of the water guiding member body 611. The maintenance opening 614 is positioned on the extension line in the opening direction of the lateral drainage opening cylindrical portion 252 of the lateral drainage portion 25 of the support column 2A.

[0034] As shown in Figures 9 to 12, the maintenance opening 614 is formed as a cylindrical shape that rises from the main body 611 of the downpipe water guide member 61 to the side of the front Y2 in the front-rear direction Y. As shown in Figure 10, the maintenance opening 614 is formed as a vertically elongated elliptical cylindrical shape that extends vertically when viewed from the front.

[0035] As shown in Figure 8, the maintenance opening 614 is positioned in the downpipe water channel member 61 on the extension of the front-rear direction Y, which is the opening direction of the drain outlet connection 612, relative to the drain outlet connection 612. The maintenance opening 614 is formed in communication with the drain outlet connection 612. In a front view when viewed from the front side Y2 in the front-rear direction Y, the opening of the maintenance opening 614 is formed to overlap with at least a portion of the opening of the drain outlet connection 612.

[0036] As shown in Figures 11 and 12, the outer circumferential surface of the cylindrical portion of the maintenance opening 614 is formed in a tapered shape, where the opening area decreases as it moves away from the main body 611 of the downpipe water guide member 61 to the front side Y2 in the front-rear direction Y. The tapered shape of the outer circumferential surface of the cylindrical portion of the maintenance opening 614 is formed inclined so that the opening area decreases as it moves away from the main body 611 of the downpipe water guide member 61 to the front side Y2 in the front-rear direction Y.

[0037] As shown in Figure 9, the maintenance cap 62 is detachably attached to the maintenance opening 614 of the downpipe water channel member 61. The maintenance cap 62 is formed in a bottomed cylindrical shape, with a vertical plate portion 621 extending vertically at the bottom and a cylindrical portion 622 rising laterally from the vertical plate portion 621. In a front view, the maintenance cap 62 is formed in a vertically elongated elliptical shape that extends vertically. The maintenance cap 62 is made of, for example, a soft resin material.

[0038] As shown in Figures 9, 11, and 12, the maintenance cap 62 has a vertical plate portion 621 that is elliptical in shape when viewed from the front and extends in the vertical direction, a cylindrical portion 622 that rises from the vertical plate portion 621 to the side of the maintenance opening 614, a pair of protruding pieces 623 positioned at the upper and lower ends, and an annular guide projection portion 624.

[0039] As shown in Figures 11 and 12, the inner circumferential surface of the cylindrical portion 622 is formed in a tapered shape that corresponds to the tapered shape of the outer circumferential surface of the cylindrical portion of the maintenance opening 614, so that the maintenance cap 62 can be attached to the maintenance opening 614. The tapered shape of the inner circumferential surface of the cylindrical portion 622 is formed inclined so that the opening area increases as it moves away from the vertical plate portion 621 towards the maintenance opening 614.

[0040] The pair of protruding pieces 623 are formed to protrude radially outward from the upper and lower ends of the maintenance cap 62, respectively. When the maintenance cap 62 is attached to the maintenance opening 614, the maintenance cap 62 can be easily removed from the maintenance opening 614 by placing a finger on the protruding piece 623.

[0041] The annular guide projection 624 rises from a position on the radially inner side of the cylindrical portion 622 in the vertical plate portion 621, with a gap approximately the thickness of the tip of the cylindrical portion of the maintenance opening 614, to the side of the maintenance opening 614, at a height lower than the cylindrical portion 622 of the maintenance cap 62.

[0042] As a result, an annular groove is formed between the cylindrical portion 622 of the maintenance cap 62 and the annular guide projection 624, into which the tip of the cylindrical portion of the maintenance opening 614 can be inserted. With this configuration, when attaching the maintenance cap 62 to the maintenance opening 614, the watertightness can be improved by inserting the tip of the cylindrical portion of the maintenance opening 614 into the groove between the cylindrical portion 622 of the maintenance cap 62 and the annular guide projection 624.

[0043] Alternatively, after attaching the maintenance cap 62 to the maintenance opening 614, the maintenance cap 62 may be secured to the maintenance opening 614 by a cable tie wrapped around the outer surface of the maintenance cap.

[0044] As shown in Figures 4 to 8, the intermediate connecting member 63 is attached to the drain outlet opening 613 of the downpipe water guide member 61. The intermediate connecting member 63 has a rectangular parallelepiped portion 631 located on one side X1 in the left-right direction X, and a tubular portion 632 located on the other side X2 in the left-right direction X. The intermediate connecting member 63 is formed of, for example, a hard resin material.

[0045] The rectangular parallelepiped portion 631 is formed such that one side X1 in the left-right direction X is formed as a rectangular cylinder extending in the vertical direction and is open, while the upper part of the other side X2 in the left-right direction X is closed with a plate material and the lower part is open in a circular shape. The open part of the rectangular parallelepiped portion 631 in the left-right direction X1 is attached to the drain outlet opening 613 of the downpipe water guide member 61. A sealing material (not shown) is applied to the connection between the intermediate connecting member 63 and the drain outlet opening 613 of the downpipe water guide member 61.

[0046] The tubular portion 632 is formed as a short cylinder extending from a circularly open portion on the lower side of the other side X2 in the left-right direction X of the rectangular parallelepiped portion 631 to the other side X2 in the left-right direction X. A drainage guide pipe 64 is attached to the end of the tubular portion 632 on the other side X2 in the left-right direction X.

[0047] The drainage guide pipe 64 is formed in a cylindrical shape that extends linearly in the left-right direction X. One end X1 of the drainage guide pipe 64 in the left-right direction X is connected to an intermediate connecting member 63. A sealing material (not shown) is applied to the connection portion between the drainage guide pipe 64 and the intermediate connecting member 63.

[0048] The drainage guide pipe 64 guides the water discharged from the intermediate connecting member 63 to the other side X2 in the left-right direction X away from the carport 1. The drainage guide pipe 64 is fixed to the side of the support column 2A by a drainage guide pipe holding member 65. The drainage guide pipe 64 is made of, for example, a rigid resin material.

[0049] The drainage guide pipe holding member 65 includes a plate-shaped fixing plate 651 fixed to the front side Y2 of the support column 2A by screws 651a, a holding plate 652 extending from the other end X2 in the left-right direction X of the fixing plate 651 to the front side Y2 in the front-rear direction Y, and a cylindrical holding portion 653 provided on the holding plate 652 that penetrates the holding plate 652 in the front-rear direction Y and has a circular opening.

[0050] The drainage guide pipe holding member 65 is fixed to the front side Y2 of the support column 2A in the front-rear direction Y, and holds the drainage guide pipe 64 in the holding cylindrical portion 653 provided on the holding plate 652, thereby fixing and holding the drainage guide pipe 64 to the front side Y2 of the support column 2A.

[0051] The cover member 7 is positioned on the front side Y2 of the support column 2A in the front-rear direction Y, and covers the downpipe water guide member 61 to which the maintenance cap 62 is attached, the maintenance cap 62, the intermediate connecting member 63, and one side X1 in the left-right direction X of the drainage guide pipe 64.

[0052] As shown in Figure 4, the cover member 7 is formed in a rectangular parallelepiped shape with the other side X2 in the left-right direction X and the rear side Y1 in the front-rear direction Y open. The cover member 7 has a pair of cover-side fitting protrusions 71. The cover member 7 is formed from, for example, a hard resin material.

[0053] As shown in Figure 4, the pair of cover-side fitting protrusions 71 are provided on the ends of the upper and lower plates of the cover member 7 on the support column 2A side when the cover member 7 is attached to the front side Y2 of the support column 2A in the front-rear direction Y.

[0054] When the cover member 7 is positioned on the front side Y2 of the support column 2A in the front-rear direction Y, as shown in Figure 4, the other end X2 of the cover member 7 in the left-right direction X is fitted into a pair of L-shaped fitting grooves 654 formed on the upper and lower ends of the retaining plate 652 of the drainage guide pipe holding member 65, and in that state, the pair of cover-side fitting protrusions 71 are fitted into a pair of water guide member-side fitting protrusions 615 of the water guide member body 611 of the downpipe water guide member 61. As a result, the cover member 7 is positioned on the front side Y2 of the support column 2A in the front-rear direction Y, covering the downpipe water guide member 61, the maintenance cap 62, the intermediate connecting member 63, and a part of the drainage guide pipe 64.

[0055] To perform maintenance on the drainage structure of the support column 2A (downpipe), first, remove the cover member 7 from the state shown in Figure 3A, as shown in Figure 4. Then, as shown in Figure 9, remove the maintenance cap 62 attached to the maintenance opening 614 from the maintenance opening 614. Then, access the lateral drainage opening cylinder portion 252 of the support column 2A through the maintenance opening 614 and perform maintenance on the inside of the lateral drainage portion 25 of the support column 2A through the lateral drainage opening cylinder portion 252. This makes it easy to perform maintenance on the lateral drainage portion 25 of the support column 2A that constitutes the downpipe simply by removing the maintenance cap 62 from the maintenance opening 614.

[0056] The drainage structure 60 for the support column 2A of this embodiment, as described above, provides the following effects. The drainage structure 60 for the support column 2A of this embodiment is a drainage structure 60 for the support column 2A that discharges water passing through the inside of the support column 2A via a drainage opening 252 provided in the support column 2A, and comprises a downspout water guide member 61 connected to the lateral drainage opening cylindrical portion 252 of the support column 2A, which guides the water drained from the lateral drainage opening cylindrical portion 252 in a direction intersecting the opening direction of the lateral drainage opening cylindrical portion 252 and has a maintenance opening 614 positioned on the extension of the opening direction of the lateral drainage opening cylindrical portion 252, and a maintenance cap 62 that is detachably attached to the maintenance opening 614.

[0057] Therefore, since the maintenance opening 614 is provided on the extension of the opening direction of the lateral drainage opening pipe 252, the drainage opening 252 of the support column 2A can be easily accessed through the maintenance opening 614 by removing the maintenance cap 62 from the maintenance opening 614. This makes it easy to remove debris accumulated at the bottom of the support column 2A by inserting a hand or rod into the drainage opening 252 of the support column 2A from the maintenance opening 614. Thus, maintenance of the support column 2A that constitutes the downspout can be easily performed, improving maintainability.

[0058] Furthermore, in this embodiment, the downpipe water guide member 61 has a drain outlet connection portion 612 connected to the lateral drain opening cylindrical portion 252 of the support column 2A, and a drain outlet opening 613 that opens in a direction intersecting the opening direction of the drain outlet connection portion 612, and the maintenance opening 614 is formed on the extension line of the opening direction of the drain outlet connection portion 612 and communicates with the drain outlet connection portion 612.

[0059] Therefore, since the maintenance opening 614 is positioned on the extension of the opening direction of the drain connection part 612 and is formed in communication with the drain connection part 612, the maintenance cap 62 can be removed from the maintenance opening 614, and the drain connection part 612 connected to the drain opening 252 of the support column 2A can be easily accessed from the maintenance opening 614, and from the drain connection part 612 connected to the drain opening 252 of the support column 2A. This makes it easy to perform maintenance on the support column 2A that constitutes the downspout, improving maintainability.

[0060] Furthermore, in this embodiment, the maintenance opening 614 is formed in a cylindrical shape that rises laterally from the main body 611 of the downpipe water guide member 61, and the maintenance cap 62 is formed having a vertical plate portion 621 and a cylindrical portion 622 that rises laterally from the vertical plate portion 621 toward the maintenance opening 614, and is detachably attached to the maintenance opening 614. As a result, the cylindrical portion 622 of the maintenance cap 62 can be easily attached to and detached from the cylindrical portion of the maintenance opening 614, and the maintenance cap 62 can be easily attached to and detached from the maintenance opening 614.

[0061] Furthermore, in this embodiment, the outer circumferential surface of the cylindrical portion of the maintenance opening 614 is formed in a tapered shape, where the opening area decreases as it moves laterally away from the water guiding member body 611. The inner circumferential surface of the cylindrical portion 622 is formed in a tapered shape, where the opening area increases as it moves laterally away from the vertical plate portion 621 towards the maintenance opening 614, so that the maintenance cap 62 can be attached to the maintenance opening 614.

[0062] As a result, the outer circumferential surface of the cylindrical portion of the maintenance opening 614 is formed in a tapered shape, and the inner circumferential surface of the cylindrical portion 622 of the maintenance cap 62 is also formed in a tapered shape so that it can be attached to the maintenance opening 614. Therefore, the maintenance cap 62 can be easily attached to and detached from the maintenance opening 614. In addition, since the inner circumferential surface of the tapered cylindrical portion 622 of the maintenance cap 62 can be attached to the outer circumferential surface of the tapered portion of the maintenance opening 614, watertightness can be improved.

[0063] Furthermore, in this embodiment, the maintenance opening 614 is formed in an elliptical cylindrical shape when viewed from the front, and the maintenance cap 62 is formed in an elliptical bottomed cylindrical shape when viewed from the front, and is configured to be attachable to the maintenance opening 614.

[0064] As a result, the maintenance opening 614 is formed in an elliptical shape when viewed from the front, and the maintenance cap 62 is also formed in an elliptical shape when viewed from the front. Since the elliptical curved parts are attached in contact with each other, the watertightness can be improved compared to a configuration in which polygonal members with corners are attached in contact with each other. In addition, by forming the maintenance opening 614 and the maintenance cap 62 in a vertically elongated elliptical shape when viewed from the front, the lateral drainage opening pipe portion 252 of the support column 2A is formed in a vertically elongated shape, so maintenance of the support column 2A that constitutes the downspout can be easily performed through the lateral drainage opening pipe portion 252 of the support column 2A.

[0065] Furthermore, in this embodiment, a cover member 7 is provided that covers the downpipe water channel member 61, which is attached to the support column 2A and to which the maintenance cap 62 is attached. As a result, the cover member 7 can cover the downpipe water channel member 61 to which the maintenance cap 62 is attached, thereby improving the aesthetic appearance.

[0066] Furthermore, in this embodiment, the lateral drainage opening cylinder portion 252 opens laterally on the lower side surface of the support column 2A, and the downpipe water guide member 61 is positioned on the side surface of the support column 2A by being fitted into the lateral drainage opening cylinder portion 252. This allows the downpipe water guide member 61 to be easily attached to the lateral drainage opening cylinder portion 252 by fitting. In addition, with the downpipe water guide member 61 fitted into the lateral drainage opening cylinder portion 252, maintenance of the support column 2A that constitutes the downpipe can be easily performed.

[0067] Furthermore, this embodiment relates to a carport 1 comprising a roof body 4, a support column 2A provided with a lateral drainage opening tubular section 612 for discharging water passing through the interior, and a drainage structure for the support column 2A. This makes it possible to easily perform maintenance on the support column 2A that constitutes the downspout in the carport 1.

[0068] Furthermore, the maintenance method for the drainage structure 60 of the support column 2A in this embodiment includes the steps of removing the maintenance cap 62 attached to the maintenance opening 614 from the maintenance opening 614, and accessing the lateral drainage opening cylindrical portion 252 of the support column 2A through the maintenance opening 614 and performing maintenance on the inside of the lateral drainage portion 25 of the support column 2A through the lateral drainage opening cylindrical portion 252. Therefore, by simply removing the maintenance cap 62 from the maintenance opening 614, maintenance of the lateral drainage portion 25 of the support column 2A that constitutes the downspout can be easily performed, thereby improving maintainability.

[0069] Although a preferred embodiment of the drainage structure of the support column 2A of this disclosure has been described above, this disclosure is not limited to the above-described embodiment and can be modified as appropriate.

[0070] In the above embodiment, an aluminum roof structure using multiple long aluminum members is used as an example, but the roof structure is not limited. For example, a roof structure using polycarbonate may also be used.

[0071] Furthermore, although the downpipe was constructed using support columns 2A in the above embodiment, the system is not limited to this. For example, the downpipe may be constructed using a separate component distinct from the support columns.

[0072] Furthermore, in the above embodiment, the downpipe drainage structure is provided on the support column 2A on the front side Y2 in the front-rear direction Y, but it is not limited to this, and it is also possible to provide the downpipe drainage structure on the support column 2 on the rear side Y1 in the front-rear direction Y.

[0073] Furthermore, in the above embodiment, the drainage structure of the downpipe is configured to guide the drainage to the other side X2 in the left-right direction X, but the invention is not limited to this, and the drainage structure of the downpipe may be configured to guide the drainage to one side X1 in the left-right direction X.

[0074] Furthermore, in the above embodiment, the downpipe water guide member 61 (water guide section), intermediate connecting member 63, and drainage guide pipe 64 are provided on the front side Y2 in the front-rear direction Y of the lower end of the support column 2A, but the embodiment is not limited to this. The downpipe water guide member 61 (water guide section), intermediate connecting member 63, and drainage guide pipe 64 may also be provided on the rear side Y1 opposite to the front side Y2 in the front-rear direction Y of the lower end of the support column 2A. In this case, the lateral drain section 25 is attached to the lower end of the support column 2A so that the lateral drainage opening pipe section 252 opens toward the rear side Y1 in the front-rear direction Y of the carport 1, and then the downpipe water guide member 61 (water guide section), intermediate connecting member 63, and drainage guide pipe 64 are provided on the rear side Y1 in the front-rear direction Y of the lower end of the support column 2A.

[0075] In the above embodiment, the downpipe water guide member 61 (water guide section) and the intermediate connecting member 63 are provided separately, but the invention is not limited to this, and the downpipe water guide member 61 (water guide section) and the intermediate connecting member 63 may be integrated. When the downpipe water guide member 61 (water guide section) and the intermediate connecting member 63 are provided separately, as in the above embodiment, the drainage structure of the downpipe can be provided not only on the front side Y2 of the support column 2A in the front-rear direction Y, as in the above embodiment, but also on the rear side Y1 of the support column 2A in the front-rear direction Y. When the drainage structure of the downpipe is provided on the rear side Y1 of the support column 2A in the front-rear direction Y, the same member (downpipe water guide member 61 (water guide section)) can be used simply by rotating the downpipe water guide member 61 (water guide section) by 180° around an axis extending in the left-right direction X.

[0076] In a configuration where a downpipe water guide member 61 (water guide section), an intermediate connecting member 63, and a drainage guide pipe 64 are provided on the rear side Y1 of the lower end of the support column 2A in the front-rear direction Y, the same parts as the downpipe water guide member 61 (water guide section), intermediate connecting member 63, and drainage guide pipe 64 used in the above embodiment are used, but the orientation of the downpipe water guide member 61 (water guide section) is changed so that the maintenance opening 614 opens toward the rear side Y1 of the carport 1 in the front-rear direction Y and the drainage outlet opening 613 (outlet opening) opens toward the other side X2 in the left-right direction X, thereby providing the downpipe water guide member 61 (water guide section), intermediate connecting member 63, and drainage guide pipe 64 on the rear side Y1 of the support column 2A. [Explanation of Symbols]

[0077] 1 Carport (roof structure), 2A Support column (downpipe), 4 Roof body, 7 Cover member, 60 Drainage structure of support column (drainage structure of downpipe), 61 Downpipe water guide member (water guide section), 62 Maintenance cap, 252 Side drainage opening cylinder section (drainage opening), 611 Water guide member body (water guide section body), 612 Drain outlet connection section (inlet opening), 613 Drainage outlet opening (outlet opening), 614 Maintenance opening, 621 Vertical plate section, 622 Cylinder section

Claims

1. A drainage structure for a downpipe that discharges water passing through the inside of the downpipe via a drainage opening provided in the downpipe, A water guide section connected to the drainage opening of the downpipe, which guides the water drained from the drainage opening in a direction intersecting the opening direction of the drainage opening, and which has a maintenance opening positioned on the extension of the opening direction of the drainage opening, A drainage structure for a downspout, comprising a maintenance cap that can be detachably attached to the maintenance opening.

2. The water guide section has an inlet opening connected to the drainage opening of the downpipe, and an outlet opening that opens in a direction intersecting the opening direction of the inlet opening. The drainage structure for a downspout according to claim 1, wherein the maintenance opening is located on the extension of the opening direction of the inlet opening and is formed to communicate with the inlet opening.

3. The maintenance opening is formed in a cylindrical shape that rises laterally from the main body of the water guide section. The drainage structure for a downspout according to claim 1 or 2, wherein the maintenance cap has a vertical plate portion and a cylindrical portion that rises from the vertical plate portion toward the maintenance opening, and is detachably attached to the maintenance opening.

4. The outer circumferential surface of the cylindrical portion of the maintenance opening is formed in a tapered shape, where the opening area decreases as it moves laterally away from the water-conducting body. The drainage structure for a downspout according to claim 3, wherein the inner circumferential surface of the cylindrical portion is formed in a tapered shape such that the opening area increases as it moves away from the vertical plate portion toward the maintenance opening, so that the maintenance cap can be attached to the maintenance opening.

5. The aforementioned maintenance opening is formed in an elliptical cylindrical shape when viewed from the front. The drainage structure for a downpipe according to claim 1 or 2, wherein the maintenance cap is formed in the shape of an elliptical bottomed cylindrical shape when viewed from the front and is configured to be attachable to the maintenance opening.

6. The downpipe drainage structure according to claim 1 or 2, comprising a cover member attached to the downpipe and covering the water guide section and the maintenance cap.

7. The drainage opening is located on the lower side of the downpipe and opens laterally. The downpipe drainage structure according to claim 1 or 2, wherein the water guide is positioned on the side of the downpipe by being fitted into the drainage opening.

8. The roof structure and A downpipe with a drainage opening for draining water passing through it, A roof structure comprising a downpipe drainage structure according to claim 1 or 2.

9. A method for maintaining the drainage structure of a downspout according to claim 1 or 2, The steps include removing the maintenance cap attached to the maintenance opening from the maintenance opening, A method for maintaining a downpipe drainage structure, comprising the steps of: accessing the drainage opening of the downpipe through the maintenance opening and performing maintenance on the inside of the downpipe through the drainage opening.

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