Downspout support bracket and drain system

Abstract

To effectively handle expansion and contraction compensation.SOLUTION: A downspout support bracket 14 for supporting a downspout 13 in front of a wall 2 comprises a first member 45 fixed to the wall 2 and a second member 46 connected to a band 73 that supports the downspout 13, wherein the first member 45 and the second member 46 are movably connected in the front-rear direction.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to downspout supports and drainage systems. [Background technology]

[0002] For example, a downspout support tool used in a drainage system is known, as described in Patent Document 1. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-339003 Summary of the Invention [Problem to be solved by the invention]

[0004] In this type of gutter support, for example, measures (i.e., expansion / contraction treatment) are required to absorb the effects of thermal expansion and contraction caused by temperature changes (fluctuations in outside temperature between day and night and between summer and winter) for components other than the gutter support related to the drainage system (e.g., roofs, downspouts, etc.).

[0005] The present invention has been made in view of the above-mentioned circumstances, and has as its object to provide an effective stretching treatment. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides the following means. <1> A downspout support device that supports a downspout in front of a wall, comprising a first member fixed to the wall and a second member connected to a band that supports the downspout, wherein the first member and the second member are connected so as to be movable in the forward and backward directions.

[0007] <2> the above <1> In the downspout support according to the present invention, a first hole is provided in the first member, and the second member is disposed in the first hole so as to be movable in the front-rear direction. <1> The downspout support device described in .

[0008] <3> the above <1> The first member of the downspout support according to the present invention is a plate-shaped member with its front and back surfaces facing left and right, and the portions of the first member positioned above and below the first hole protrude in the left and right directions, respectively. <2> The downspout support device described in .

[0009] <4> the above <3> In the downspout support according to the above, the second member includes a first portion whose upper end is connected to the first member, and a second portion that extends forward from the lower end of the first portion and connects to the band. <1> The downspout support device described in .

[0010] <5> the above <3> In the downspout support according to the above, a first hole is provided in the first member, the first portion is disposed in the first hole, a second hole is provided in the second portion, and the first hole is longer in the front-rear direction than the second hole. <4> The downspout support device described in .

[0011] <6> A drainage system according to one aspect of the present invention includes: a downspout; <1> from <5> and a downspout support device according to any one of the above, wherein the downspout support device supports the downspout in front of the wall.

[0012] <7> the above <6> The drainage system according to the present invention further comprises a plurality of gutter supports fixed to a roof or wall of a building at intervals in the horizontal direction, and a gutter supported by the plurality of gutter supports, wherein the downspout includes a configuration extending downward from the gutter. <6> The drainage system according to claim 1. [Effects of the Invention]

[0013] The present invention aims to provide an effective stretching treatment. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a partial cross-sectional view showing a state in which the rain gutter system according to the first embodiment of the present invention is fixed to a building. [Figure 2] FIG. 2 is an exploded view of the drain member according to the first embodiment. [Figure 3] FIG. 3 is a cross-sectional view taken along the line III-III in FIG. [Figure 4] 1 is a perspective view of a downspout support according to a first embodiment, seen from diagonally above the front. FIG. [Figure 5] FIG. 2 is a perspective view of a first member of the downspout support of the first embodiment. [Figure 6] 3A and 3B are diagrams showing a first member of the downspout support of the first embodiment, in which (a) is a side view and (b) is a top view. [Figure 7] 1 is a perspective view of a downspout support according to a first embodiment, seen from diagonally above and behind; FIG. [Figure 8] FIG. 2 is a side view of the downspout support of the first embodiment. [Figure 9] FIG. 6 is a side view of a gutter system according to a second embodiment of the present invention. [Figure 10] FIG. 10 is a side view of a gutter system according to a first modified example of the second embodiment. [Figure 11] FIG. 10 is a side view of a gutter system according to a second modified example of the second embodiment. [Figure 12] FIG. 10 is a side view of a modified example of the siphon member according to the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, a rain gutter system according to one embodiment of the present invention will be described with reference to Figs. 1 to 11. In the embodiment, a rain gutter system (drainage system) in which eaves gutters are fixed to the roof of a building and down gutters are fixed to the wall of the building will be described as an example, but the rain gutter system is not limited to this. The rain gutter system can also be applied to other gutters such as valley gutters instead of eaves gutters. In addition, a folded-plate roof will be described as an example of a roof to which the rain gutter system is applied, but the roof specifications can be selected as desired. However, if the roof is a folded-plate roof, the thermal expansion and contraction of the roof is significant, which can enhance the effectiveness of the rain gutter system.

[0016] [First embodiment] As shown in Fig. 1, the gutter system RG1 is attached to the eaves 1A of a folded-plate roof (roof) 1. The gutter system RG1 includes, for example, a plurality of eaves gutter supports (first supports) 6, eaves gutters (first gutters) 7, drain members 8 (drainage members), down gutters (second gutters) 13, and down gutter supports (second supports) 14. The folded-plate roof 1 is formed on the upper end of the wall 2 of a building and has a configuration in which peaks 3 and valleys 4 made of metal plates are alternately formed in a continuous corrugated pattern. Figure 1 is a cross-sectional view of the eaves 1A and wall 2 of the folded-plate roof 1. The folded-plate roof 1 has a slight downward roof slope from the top (not shown) to the eaves 1A. In the following description, the top side of the folded-plate roof 1 will be referred to as the "right side," and the eaves 1A side of the folded-plate roof 1 will be referred to as the "left side." The folded plate roof 1 has a slight downward slope from right to left, and the left end of the folded plate roof 1 is the eaves 1A. The eaves 1A of the folded plate roof 1 extends in the front-to-back direction of the paper.

[0017] A plurality of bolt holes (not shown) are formed in the eaves edge 1A of the folded-plate roof 1. The plurality of bolt holes are spaced apart in the front-to-back direction of the paper along the eaves edge 1A. The plurality of bolt holes penetrate the metal plate that constitutes the peak portion 3 in the vertical direction. Mounting bolts 5 are inserted into the plurality of bolt holes. A plurality of eaves gutter supports 6 are fixed at intervals in the horizontal direction in the front-to-back direction of the paper along the eaves edge 1A of the folded-plate roof 1 by the inserted mounting bolts 5. The material of the eaves gutter supports 6 can be selected arbitrarily from a single resin, a composite material, a metal, etc.

[0018] The eaves gutter 7 is supported by multiple eaves gutter supports 6. Figure 1 is a partial cross-sectional view showing only a portion of the eaves edge 1A, so only one eaves gutter support 6 and one eaves gutter 7 are depicted. The eaves gutter 7 is supported (fixed) to the eaves edge 1A of the folded-plate roof 1 via multiple eaves gutter supports 6, and is arranged horizontally below the eaves edge 1A. The length direction of the eaves gutter 7 is the front-to-back direction of the paper in Figure 1, and the left-to-right direction of the paper in Figure 1 is the width direction. Because the eaves gutter 7 is supported below the eaves edge 1A of the folded-plate roof 1, it can catch rainwater that flows down from the eaves edge 1A.

[0019] The material of the eaves gutter 7 can be selected arbitrarily from a single resin, a composite (multi-layer) resin, a single metal, or a composite material in which metal is coated with a resin. The eaves gutter 7 may, for example, be configured to have an acid-resistant coated steel plate in which a steel plate (core material) is covered with an alloy plating layer (e.g., a hot-dip zinc alloy plating layer) and a resin coating layer. The coating layer may, for example, be divided into two in the thickness direction of the steel plate, and the coating layer may comprise a surface coating layer and a back coating layer. The end faces in the width direction (short direction) of the steel plate may be covered by the widthwise ends of the surface coating layer and the back coating layer, respectively. In the first embodiment, the eaves gutter 7 is an extrusion molded product made of synthetic resin such as hard vinyl chloride resin, ABS, or AES.

[0020] In addition, when the eaves gutter 7 is made of synthetic resin, the linear expansion coefficient is set to 2.0×10 -5 / °C or less. It is also preferable to reduce the coefficient of linear expansion by inserting a low-elasticity sheet such as a stretched PET resin sheet or an iron sheet into the center of the thickness direction of the eaves gutter 7, or by blending a low-elasticity additive such as wollastonite or carbon fiber into the synthetic resin that makes up the eaves gutter 7.

[0021] In the first embodiment, an example will be described in which the eaves gutter 7 is supported on the eaves edge 1A of the folded-plate roof 1, but the eaves gutter 7 may also be supported on the wall portion 2 of the building. Specific examples of the eaves gutter support 6 and the eaves gutter 7 will be described in detail later.

[0022] A through hole 62A (see FIG. 2) is formed in the center of the width direction in a bottom plate 62 (described later) of the eaves gutter 7. A drain member 8 is disposed in the through hole 62A. The drain member 8 is attached to the bottom plate 62 of the eaves gutter 7 while being disposed in the through hole 62A. The drain member 8 may be a member that induces a siphon effect.

[0023] 1 and 2, the drain member 8 includes, for example, a lower drain member 15, an upper drain member 16, and a siphon portion 17 disposed above the upper drain member 16, and is attached to the eaves gutter 7. However, the siphon portion 17 does not have to be present, and the drain member 8 does not have to induce the siphon phenomenon. Specifically, the lower drain member 15 is disposed on the lower surface 62B side of the bottom plate 62 of the eaves gutter 7, and the upper drain member 16 is disposed on the upper surface 62C side of the bottom plate 62.

[0024] Any material can be selected for forming the drain member 8. In the first embodiment, the drain member 8 is an injection-molded product made of synthetic resin such as hard vinyl chloride resin, polycarbonate, ABS, or AES. However, the drain member 8 is not limited to synthetic resin, and may be formed by casting cast iron, stainless steel, or aluminum.

[0025] The siphon portion 17 may include, for example, a cover member 18, a vertical rib 19 connecting the upper drain member 16 and the cover member 18, a gripping rib 20, and a guide 21.

[0026] The lid member 18 is formed, for example, in the shape of a circular disk in a plan view and placed above the upper drain member 16. The lid member 18 is formed coaxially with the pipe axis O1 of the upper drain member 16. The portion formed between the outer peripheral edge 18A of the lid member 18 and the outer peripheral edge 31C of the upper flange portion 31 provided on the upper drain member 16 forms an inlet opening 23. The inlet opening 23 forms an opening through which rainwater accumulated in the eaves gutter 7 flows into a drop opening 22 of the upper drain member 16, which will be described later.

[0027] The cover member 18 is supported by the upper drain member 16 while being supported from below by a plurality of vertical ribs 19. The cover member 18 is disposed inside the eaves gutter 7, positioned above the drop opening 22, and forms an inlet opening 23 that allows rainwater to flow from the upper surface 62C of the eaves gutter 7 into the drop opening 22. The cover member 18 is provided with gripping ribs 20 that protrude upward from the upper surface 18B and are spaced apart in the circumferential direction. By gripping these gripping ribs 20, the drain member 8 can be easily rotated when tightening it.

[0028] A guide 21 is provided at the center of the underside of the lid member 18. The guide guides 21 are provided in the center of the underside of the lid member 18, with a plurality of guide guides 21 having curves that extend gradually downward as they approach the drain axis O (center of the lid), and extending radially from the drain axis O. The guide guides 21 are intended to guide rainwater in the eaves gutter 7 from the inlet opening 23 to the drop opening (the opening of the drop opening 22).

[0029] 12 is a side view showing another modified example of the siphon portion 17 of the first embodiment. The siphon portion 17 may include an inner cylindrical portion 21A connected to the radially inner ends of the plurality of blades, and a funnel portion 21B continuous with the upper end of the inner cylindrical portion 21A. In this modification of the first embodiment, inner cylindrical portion 21A is connected to funnel portion 21B and has a vertically long cylindrical shape. Inner cylindrical portion 21A is connected to, for example, lower portions of the radially inner ends of multiple blades 21C, extends vertically, and has its lower end facing the inner space of inner cylindrical portion 32. The funnel portion 21B is an inverted truncated cone-shaped pipe member that is connected to and integrally fixed to the upper end of the inner cylindrical portion 21A and expands in diameter from its lower end to its upper end. The inner cylindrical portion 21A and the funnel portion 21B function as a lid member that closes part of or the entire opening of the upper drain member 16 in a plan view. Each of the blades 21C is a flat plate having the same shape. Each lower blade 21C has an upper side 21Ca extending horizontally at equal angular intervals from the outer peripheral edge of the upper end of the funnel portion 21A, an outer side 21Cb extending downward from the outermost edge of the upper side 21Ca, and a lower side 21Cc extending from the lower end of the outer side 21Cb toward the tube axis Y. Each lower side 21Cc includes a curved shape concave upward in side view. By attaching the above-described inner tubular portion 21A and funnel portion 21B to the upper flange portion 31, multiple openings are formed that communicate with the opening of the upper flange portion 31. That is, multiple openings are formed that are defined by the outer peripheral surface of the funnel portion 21B, the side surfaces of each blade 21C, and the upper surface of the upper flange portion 31. In addition, openings that penetrate the inner tubular portion 21A and the funnel portion 21B in the vertical direction are also formed. Also in this modification of the first embodiment, rainwater is rectified by passing it through the openings formed between the side surfaces of each blade 21C.

[0030] Siphon section 17 blocks the opening of downspout section 22 when viewed from above, and when a large amount of rainwater flows in from inlet opening 23 during heavy rain, it makes it difficult for air to be sucked in, filling downspout 13 and sealing it off with water. As a result, the water level in eaves gutter 7 is less likely to rise, making it difficult for rainwater to overflow from eaves gutter 7. Gutter system RG1 can achieve high drainage performance even when there is a lot of rainfall. Therefore, the siphon portion 17 generates a siphon phenomenon downstream, thereby achieving a high drainage function. The siphon portion 17 can also achieve high drainage performance even when there is a large amount of precipitation. Such a drain member 8 is provided inside the eaves gutter 7 of the gutter drainage piping structure attached to a building of a large facility such as a factory or shopping center, for example, and exhibits high drainage function.

[0031] The upper drain member 16 comprises an upper flange portion 31 arranged on the upper surface 62C of the bottom plate 62 of the eaves gutter 7 and having a drop opening portion 22 formed on the inner peripheral side, an inner tube portion 32 formed below the upper flange portion 31, an inner tube reduced diameter portion 33 connecting the upper flange portion 31 and the inner tube portion 32 and reducing in diameter as it extends downward, and an outer peripheral thread portion 35 formed on the outer peripheral surface of the inner tube portion 32. The inner cylindrical portion 32 is inserted into the outer cylindrical portion 42 of the lower drain member 15, which will be described later, and the outer peripheral thread portion 35 is screwed into an inner peripheral thread portion (not shown), which will be described later. This screwing unites the upper drain member 16 and the lower drain member 15 together to form the drain member 8. In the upper drain member 16, the inner surface of the inner cylindrical portion 32 and the upper surface of the portion where the upper flange portion 31 is connected form a tapered or curved bell-mouth shape.

[0032] The upper flange portion 31 is formed in a ring shape in a plan view. A lower surface 31B of the upper flange portion 31 is disposed on an upper surface 62C of the bottom plate 62 of the eaves gutter 7. In this embodiment, a flat surface is formed on the outer periphery of the lower surface 31B of the upper flange portion 31, and a positioning step 36 consisting of a cylindrical portion that protrudes downward is formed on the inner periphery of the flat surface. The positioning step 36 comes into contact with the inner periphery of the through hole 62A of the eaves gutter 7, thereby positioning the upper drain member 16 with respect to the through hole 62A.

[0033] It is not necessary to provide the positioning step 36. Also, the positioning step 36 may be configured so that it is not formed on the entire circumference when viewed in the circumferential direction, or it is also possible to select a configuration in which a plurality of positioning step portions 36 are formed only on a portion at intervals.

[0034] The lower drain member 15 includes a lower flange portion 41 arranged on the lower surface 62B side of the eaves gutter 7, and an outer tubular portion 42 that is integrally formed below the lower flange portion 41 and extends downward. The lower drain member 15 further includes an outer tubular reduced diameter portion 43 that connects the lower flange portion 41 and the outer tubular portion 42, and an inner peripheral thread portion (not shown) formed on the inner surface of the outer tubular portion 42. The lower flange portion 41 is formed in a ring shape in a plan view, and has a receiving port 41A formed on the inner side that is circular in a plan view. The upper surface 41B of the lower flange portion 41 is formed as a flat surface on the outer peripheral side, and the inner peripheral side is formed as a recessed shape that is recessed downward from the flat surface. The upper surface 41B of the lower flange portion 41 is located on the lower surface 62B side of the bottom plate 62 of the eaves gutter 7.

[0035] The outer tubular portion 42 is formed, for example, in a cylindrical shape centered on the pipe axis O2, and extends in the vertical direction when attached to the eaves gutter 7. The outer tubular portion 42 is penetrated in the vertical direction. An inner peripheral thread portion (not shown) is formed on the inner surface of the outer tubular portion 42. The outer peripheral thread portion 35 of the upper drain member 16 is screwed into this inner peripheral thread portion, thereby integrating the upper drain member 16 and the lower drain member 15. In this state, the upper flange portion 31 of the upper drain member 16 and the lower flange portion 41 of the lower drain member 15 sandwich the bottom plate 62 of the eaves gutter 7. Thus, the drain member 8 is fixed to the bottom plate 62 of the eaves gutter 7.

[0036] The upper end of the short pipe 9 is connected to the socket at the lower end 42A of the outer cylindrical portion 42 of the lower drain member 15. The lower end of the short pipe 9 is connected to the socket 10A1 of the first elbow pipe 10A. The first elbow pipe 10A is formed with a bend angle of, for example, 45°. The upper end of the first joint 11 is connected to the socket 10A2 of the first elbow pipe 10A. The lower end of the first joint 11 is connected to the socket 10B1 of the second elbow pipe 10B. The second elbow pipe 10B is formed with a bending angle of, for example, 45°. The upper end of the second joint 12 is connected to the socket 10B2 of the second elbow pipe 10B. The second joint 12 may have a bellows-shaped rubber ring portion 12A at its upper end. The lower end of the second joint 12 is connected to the upper end 13A of the downspout 13.

[0037] Here, the length L1 from the lower end 42A of the outer tubular portion 42 of the lower drain member 15 to the upper end 13A of the downspout 13 is set to less than 1 meter. That is, the short pipe 9, the first elbow pipe 10A, the first joint 11, the second elbow pipe 10B, and the second joint 12 are installed within a range of the length L1 that is less than 1 meter from the lower end 42A of the outer tubular portion 42 of the lower drain member 15. The downspout 13 extends downward along the wall 2 via the drain member 8, short pipe 9, first elbow pipe 10A, first joint 11, second elbow pipe 10B, and second joint 12. The downspout 13 is connected to a drainage channel (not shown) buried in the ground near the building so that rainwater can be drained. An upper end 13A of the downspout 13 is fixed to the wall 2 of the building by a downspout support 14. The downspout support 14 is located below the lower end 42A of the outer tubular portion 42, near the length L1 position.

[0038] Specifically, as shown in Figures 1 to 3, the downspout support 14 includes a band 73, a first member 45, and a second member 46. The second member 46 supports the downspout 13. The band 73 is fixed to the outer peripheral surface of the upper end 13A of the downspout 13. The second member 46 is fixed to the band 73 with bolts 74. The first member 45 is connected to the second member 46. A base end 45A of the first member 45 is fixed to the wall 2 of the building with a mounting bolt 49. In this way, the downspout 13 is fixed to the wall 2 of the building by the downspout support 14.

[0039] Downspout 13 may be a rectangular or circular tubular shape. Downspout 13 may have, for example, one side of its largest outer diameter (the width of downspout 13, the largest width in the direction perpendicular to the central axis) (outer diameter in the case of a circle) of 40 mm or more and 320 mm or less.

[0040] Next, specific examples of the eaves gutter support 6 and the eaves gutter 7 will be described in detail. In this embodiment, the eaves gutter support 6 is formed into a generally rectangular shape by a band-like extending support piece, as shown in Fig. 1. Specifically, the eaves gutter support 6 has a first upper piece 51, a first vertical piece (one of a pair of vertical pieces) 52, a horizontal piece 53, a second vertical piece (the other of the pair of vertical pieces) 54, an inclined piece 55, and a second upper piece 56.

[0041] The first upper piece 51 is arranged along the metal plate that forms the peak portion 3 of the eaves edge 1A. The first upper piece 51 is fixed to the metal plate of the peak portion 3 with a plurality of mounting bolts 5. The first vertical piece 52 extends downward from the right end of the first upper piece 51. A first fixing portion 52A is provided on the inner surface of the first vertical piece 52. The first fixing portion 52A is formed so as to be able to engage with the first side plate 63 of the eaves gutter 7 supported inside the eaves gutter support 6.

[0042] The horizontal piece 53 extends horizontally to the left from the lower end of the first vertical piece 52. The second vertical piece 54 extends upward, for example, from the left end of the horizontal piece 53. The lower end of the second vertical piece 54 is fixed to the left end of the horizontal piece 53 with a mounting bolt 58. A second fixing portion 54A is provided on the inner surface of the second vertical piece 54. The second fixing portion 54A is formed so as to be able to engage with the second side plate 64 of the eaves gutter 7 supported inside the eaves gutter support 6.

[0043] The inclined piece 55 extends so as to incline to the right as it extends upward from the upper end of the second vertical piece 54. The second upper piece 56 extends to the right from the upper end of the inclined piece 55 and is arranged along the metal plate that constitutes the peak portion 3 of the eaves edge 1A. The second upper piece 56 is fixed to the metal plate of the peak portion 3 at the eaves edge 1A with a mounting bolt 5.

[0044] The eaves gutter support 6 is not limited to the configuration of a receiving device that supports the eaves gutter 7 from below, as shown in Fig. 1. The eaves gutter support 6 may also be in the form of a hanging device that is hooked onto the eaves gutter 7. An example of such a structure is a structure that includes a hanging bolt that is hung from the half-height roof 1, and a hanging device main body that is attached to the lower end of the hanging bolt and hooked onto the upper end (ear) of the eaves gutter 7.

[0045] The eaves gutter 7 is supported inside the eaves gutter support 6. The eaves gutter 7 has a bottom plate 62, a first side plate (one of a pair of side plates) 63, a second side plate (the other of the pair of side plates) 64, a first convex portion (convex portion) 66, and a second convex portion (convex portion) 67. The bottom plate 62 is formed horizontally and placed on the horizontal piece 53. The lower drain member 15 and the upper drain member 16 of the drain member 8 are fixed to the bottom plate 62. The upper end 13A of the downspout 13 is connected to the outer tube portion 42 of the lower drain member 15 via a short pipe 9, a first elbow pipe 10A, a first joint 11, a second elbow pipe 10B, and a second joint 12. The downspout 13 is fixed to the wall 2 of the building by the downspout support 14. Therefore, the bottom plate 62 of the eaves gutter 7 is held stationary in a predetermined position.

[0046] Furthermore, when the eaves gutter 7 is supported by the eaves gutter support 6, the right end 62D of the bottom plate 62 is disposed inwardly with a first distance L2 from the first vertical piece 52. The first side plate 63 extends upward from the right end 62D of the bottom plate 62 so as to incline outward toward the first vertical piece 52. The first side plate 63 is disposed opposite the first vertical piece 52. The upper end 63A of the first side plate 63 is fixed by being engaged with the first fixing portion 52A of the first vertical piece 52.

[0047] Furthermore, when the eaves gutter 7 is supported by the eaves gutter support 6, the left end 62E of the bottom plate 62 is disposed inwardly with a second distance L3 from the second vertical piece 54. The second side plate 64 extends upward from the left end 62E of the bottom plate 62, sloping outward toward the second vertical piece 54. The second side plate 64 is disposed opposite the second vertical piece 54. The upper end 64A of the second side plate 64 is fixed by being engaged with the second fixing portion 54A of the second vertical piece 54. The first side plate 63 and the second side plate 64 are disposed such that their width in the left-right direction gradually increases from the bottom plate 62 upward. In other words, the eaves gutter 7 is formed in a U-shape with an open top.

[0048] Inside the eaves gutter 7, a first protrusion 66 is formed at the intersection of the bottom plate 62 and the first side plate 63. The first protrusion 66 extends along the longitudinal direction of the eaves gutter 7 at the lower end of the first side plate 63. The first protrusion 66 has a hollow portion 66A that continues in the longitudinal direction of the eaves gutter 7. The first side plate 63 has sufficient rigidity to withstand normal use conditions, for example, ensured by the first protrusion 66. Furthermore, the first side plate 63 is formed so as to be deformable in the left-right direction when a left-right stress exceeding that in normal use conditions is input to the upper end 63A.

[0049] Furthermore, inside the eaves gutter 7, a second protrusion 67 is formed at the intersection of the bottom plate 62 and the second side plate 64. The second protrusion 67 extends along the longitudinal direction of the eaves gutter 7 at the lower end of the second side plate 64. The second protrusion 67 has a hollow portion 67A that continues in the longitudinal direction of the eaves gutter 7. The second side plate 64 has sufficient rigidity to withstand normal use conditions, for example, ensured by the second protrusion 67. Furthermore, the second side plate 64 is formed so as to be deformable in the left-right direction when a left-right stress exceeding that in normal use conditions is input to the upper end 64A.

[0050] That is, by providing the eaves gutter 7 with the first convex portion 66 and the second convex portion 67, the longitudinal rigidity of the eaves gutter 7 is ensured. Furthermore, the first convex portion 66 has a hollow portion 66A that continues in the longitudinal direction of the eaves gutter 7. The second convex portion 67 has a hollow portion 67A that continues in the longitudinal direction of the eaves gutter 7. This makes it possible to further increase the longitudinal rigidity of the eaves gutter 7. This makes it possible, for example, to apply the eaves gutter 7 to a variety of uses, thereby expanding the uses of the eaves gutter 7.

[0051] In the first embodiment, an example is described in which a first convex portion 66 is provided on the first side plate 63 and a second convex portion 67 is provided on the second side plate 64, but a convex portion may be provided on either the first side plate 63 or the second side plate 64.

[0052] When placed on the horizontal piece 53 of the eaves gutter support 6, the eaves gutter 7 is sandwiched between the first vertical piece 52 and the second vertical piece 54 (i.e., a pair of vertical pieces) of the eaves gutter support 6. In this state, a first space (space) S1 is defined between the opposing first vertical piece 52 and first side plate 63. Specifically, the horizontal piece 53, the first vertical piece 52, and the first side plate 63 define a roughly triangular first space S1. When the first vertical piece 52 attempts to move leftward in the first space S1, the first side plate 63 can be deformed leftward to allow the first vertical piece 52 to move leftward. This allows the first vertical piece 52 to move leftward without applying a large stress (load) to the first side plate 63.

[0053] Furthermore, a second space (space) S2 is provided between the opposing second vertical piece 54 and second side plate 64. Specifically, the horizontal piece 53, the second vertical piece 54, and the second side plate 64 define a generally triangular second space S2. When the second vertical piece 54 attempts to move rightward in the second space S2, the second side plate 64 can be deformed rightward to allow the second vertical piece 54 to escape. This allows the second vertical piece 54 to move rightward without causing large stress on the second side plate 64.

[0054] Here, the first distance L2 and the second distance L3 are preferably about 10 to 40 mm. By setting the first distance L2 and the second distance L3 to about 10 to 40 mm, it is possible to absorb misalignment of the eaves gutter support 6 in the left-right direction and suppress unnecessary wobbling of the eaves gutter 7 relative to the eaves gutter support 6. Note that the first distance L2 and the second distance L3 are not limited to about 10 to 40 mm and can be selected arbitrarily according to, for example, the size and shape of the eaves gutter support 6 and the eaves gutter 7.

[0055] Next, a procedure for supporting the eaves gutter 7 on the eaves gutter support 6 will be described. That is, when supporting the eaves gutter 7 with the eaves gutter support 6, for example, before fixing the second upper piece 56 of the eaves gutter support 6 to the peak 3 of the eaves edge 1A with the mounting bolt 5, the second vertical piece 54, the inclined piece 55, and the second upper piece 56 are positioned downward around the mounting bolt 58. In this state, the upper right side of the eaves gutter support 6 is kept open. The eaves gutter 7 is placed inside through the opening of the eaves gutter support 6 and installed on the horizontal piece 53. With the eaves gutter 7 installed, the second vertical piece 54, the inclined piece 55, and the second upper piece 56 are positioned upward around the mounting bolt 58. The second upper piece 56 is fixed to the peak 3 of the eaves edge 1A with the mounting bolt 5. Thus, the eaves gutter 7 is supported inside the eaves gutter support 6. As a result, the eaves gutter 7 is fixed to the peak 3 of the eaves edge 1A via the eaves gutter support 6.

[0056] 1, the downspout 13 is fixed to the wall 2 of the building by the downspout support 14. In this way, the eaves gutter 7 is fixed to the folded-plate roof 1 by the multiple eaves gutter support 6, and the downspout 13 is fixed to the wall 2 by the downspout support 14, so that the rain gutter system RG1 is fixed to the building.

[0057] (Gutter support) As shown in Figures 1 and 3 to 8, the downspout support 14 supports the downspout 13 in front of the wall 2. Hereinafter, the horizontal direction in which the downspout 13 and the wall 2 face each other will be referred to as the front-to-back direction X. The front-to-back direction X can also be said to be a direction perpendicular to the wall 2. The side of the downspout 13 facing the wall 2 along the front-to-back direction X will be referred to as the front, and the side of the wall 2 facing the downspout 13 along the front-to-back direction X will be referred to as the rear. The direction perpendicular to the up-down direction and the front-to-back direction X will be referred to as the left-to-right direction Y.

[0058] As shown in FIG. 4, the downspout support 14 includes a first member 45 fixed to the wall 2, a band 73 (third member) that supports the downspout 13, and a second member 46 that connects to the band 73.

[0059] The first member 45 is plate-shaped with its front and back surfaces facing the left-right direction Y. As shown in Figures 5, 6(a), and 6(b), the first member 45 includes a base end 45A and a tip end 45B. The base end 45A is a plate-shaped portion having a predetermined thickness. The tip end 45B has the same thickness as the base end 45A and is a portion that extends from the base end 45A. A first hole 71 is provided in the tip end 45B. The first hole 71 penetrates the first member 45 in the left-right direction Y. The first hole 71 is an elongated hole that is longer in the front-rear direction X than in the up-down direction.

[0060] Portions of the first member 45 that are positioned above and below the first hole 71 protrude in the left-right direction. For example, a portion 45C of the tip portion 45B below the first hole 71 protrudes forward (leftward in the left-right direction) as shown in FIGS. 5 and 6(b) when the first member 45 is viewed from above. A portion 45D of the tip portion 45B above the first hole 71 protrudes backward (rightward in the left-right direction) as shown in FIGS. 5 and 6(b) when the first member 45 is viewed from above. As shown in FIGS. 5 and 6(b), the portion 45C of the tip portion 45B, the portion 45D of the tip portion 45B, and the base end portion 45A are formed to be substantially parallel to each other.

[0061] In the above embodiment, the lower portion 45C of the first hole 71 protrudes forward and the upper portion 45D of the first hole 71 protrudes toward the back, but it is also possible to have the lower portion 45D of the first hole 71 protrude toward the back and the lower portion 45C of the first hole 71 protrude toward the front.

[0062] The position of the second member 46 in the first hole 71 of the first member 45 may be any position as long as the second member 46 can move forward and backward in the first hole 71, and is not limited to a configuration in which the second member 46 is disposed at the center of the first hole 71. It is desirable that the range of movement of the first member 45 and the second member 46 be 10 mm or more. Regardless of the size of the downspout 13, it is sufficient that the first member 45 and the second member 46 have a movable range.

[0063] 5, the first hole 71 may be long in the front-rear direction X. The size of the first hole 71 in the first member 45 is preferably 40 mm. The first hole 71 is preferably longer in the front-rear direction than a second hole 76, which will be described later.

[0064] 3 and 4, the band 73 has an annular shape in a plan view seen from the top-bottom direction. The band 73 is strip-shaped, and the peripheral ends of the band 73 face each other in the left-right direction Y behind the downspout 13. The downspout 13 is fitted inside the band 73. In the example shown, the band 73 is tightly fitted into the downspout 13. As a result, the downspout support 14 fixedly supports the downspout 13 so that it cannot move in the top-bottom direction.

[0065] 3, the band 73 is provided with a third hole 76. The third hole 76 penetrates the band 73 in the left-right direction Y. The bolt 74 is inserted into the third hole 76.

[0066] As shown in FIG. 7, the second member 46 is configured by stacking two L-shaped plates 46B at a predetermined distance and connecting one end of the L-shape to form a connecting portion 46A. The plates 46B include a first portion 46B1 and a second portion 46B2. The upper end of the first portion 46B1 is connected to the first member 45. The second portion 46B2 extends forward from the lower end of the first portion 46B1. The second portion 46B2 is connected to the band 73. The upper end of the first portion 46B1 is connected by the connecting portion 46A. The second member 46 (connecting portion 46A) is hooked into the first hole 71 of the first member 45, whereby the first member 45 and the second member 46 are connected to each other.

[0067] Specifically, as shown in Figure 7, the connecting portion 46A between the L-shaped plates 46B of the second member 46 is passed through the first hole 71 of the first member 45, and the connecting portion 46A of the second member 46 is supported by the portion 45C of the first member 45, thereby connecting the first member 45 and the second member 46. Because they are connected in this manner, it is preferable that the width (length in the front-rear direction X) of the connecting portion 46A of the second member 46 is 15 mm or more.

[0068] The second member 46 may be convex rather than L-shaped, but since the downspout is provided on the outside of the building, an L-shape saves space and is more aesthetically pleasing than a convex shape.

[0069] 7 and 8, the second member 46 includes a second hole 72. The second hole 72 is provided in the second portion 46B2.

[0070] In this embodiment, the second hole 72 has a perfect circular shape when viewed from the front in the left-right direction Y. A plurality of second holes 72 (two in the illustrated example) are arranged at intervals in the front-rear direction X. A plurality of bolts 74 and nuts 75 (two in the illustrated example) are also provided corresponding to the second holes 72. Although a single second hole 72 may be used, it is preferable to have a plurality of second holes 72 spaced apart in the front-to-rear direction. When using two second holes 72, it is preferable that the distance between the center of each hole and the center of the circle is 25 mm.

[0071] The second member 46 is fixed to the band 73 with a bolt 74 and a nut 75. The bolt 74 is inserted into the second hole 72 and the third hole 76.

[0072] The bolt 74 and the nut 75 connect the band 73 and the second member 46. The nut 75 sandwiches the second member 46 and the band 73 between the head of the bolt 74 and the nut 75. In this embodiment, the head of the bolt 74 and the nut 75 sandwich the second member 46 and the band 73 in the left-right direction Y, with the second member 46 and the band 73 sandwiched alternately.

[0073] As described above, with the downspout support 14 according to this embodiment, the first member 45 and the second member 46 are connected so as to be slidable in the front-to-rear direction X. Therefore, as the downspout 13 moves in the front-to-rear direction X, the arranged first member 45 and second member 46 can move in the front-to-rear direction X along one side.

[0074] Therefore, even if the downspout 13 moves in the front-rear direction X due to thermal expansion and contraction of the roof, for example, the movement can be absorbed. As the members of the downspout support 14 expand and contract, the first member 45 and the second member 46 move relative to each other, preventing loads from being applied to the joints between the parts.

[0075] In this embodiment, the connecting portion 46C of the second member 46 slides within the first hole 71. This prevents the bolts 74 of the downspout support 14 from moving. Because the bolts of the downspout support 14 do not move, loads caused by expansion and contraction of the downspout support 14 are not applied to the area around the bolts. Therefore, the downspout support 14 has excellent durability.

[0076] [Second embodiment] Next, a rain gutter system according to a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted, with only the differences being described.

[0077] As shown in Fig. 9, in the gutter system RG3 according to this embodiment, the downspout 13 includes a pipe 13a and a joint 13b. A plurality of the pipes 13a are arranged in the vertical direction. The joint 13b connects the pipes 13a adjacent to each other in the vertical direction. In the illustrated example, a first pipe 13a1 and a second pipe 13a2 are provided as pipes. The first pipe 13a1 is located higher than the second pipe 13a2. The upper end of the first pipe 13a1 is connected to the second elbow pipe 10B. In the illustrated example, an expansion joint 13b1 is provided as the joint 13b. The expansion joint 13b1 allows the pipe 13a, which is located above the expansion joint 13b1, to expand and contract. The upper end of the expansion joint 13b1 is connected to the lower end of the first pipe 13a1. The lower end of the expansion joint 13b1 is connected to the upper end of the second pipe 13a2.

[0078] A plurality of downspout supports 14A are provided at intervals in the vertical direction. The plurality of downspout supports 14A include a first support 14A1 and a second support 14A2. The first support 14A1 loosely supports the downspout 13 so that it can move in the vertical direction. The second support 14A2 fixedly supports the downspout 13 so that it cannot move in the vertical direction. The loosening and fixed support can be achieved, for example, by the following configuration. For example, when the second member 46 and the band 73 are sandwiched between the bolts 74 and nuts 75, the thickness (size in the left-right direction Y) of a spacer (not shown) or the presence or absence of the spacer can be adjusted to adjust the tightness of the band 73 to the downspout 13, thereby realizing the first support 14B1 and the second support 14B2, and adjusting the loose support or fixed support as appropriate. That is, for example, the spacer 80 can be removed to tighten the tightness, and the downspout 13 can be fixed and supported by the downspout support 14B so that it cannot move in the vertical direction.

[0079] The second support 14A2 is provided at the upper end of each of the first pipe 13a1 and the second pipe 13a2. The first support 14A1 is provided at a portion of each pipe 13a that is located lower than the second support 14A2. In this manner, in this embodiment, the second supports 14A2 are provided at the upper ends of the pipes 13a. Therefore, for example, the load of the portion of the downspout 13 that is located below the expansion joints 13b1 can be borne by the second supports 14A2.

[0080] Furthermore, as in a gutter system RG4 according to a second modified example shown in FIG. 10 and a gutter system RG5 according to a third modified example shown in FIG. 11, the downspout 13 may include an elbow 13b2 as the joint 13b. As shown in FIG. 10, in the gutter system RG4 according to the second modified example, the downspout 13 is offset midway in the vertical direction. The downspout 13 includes an elbow 13b2 at the offset position. As shown in FIG. 11, in the gutter system RG5 according to the third modified example, an elbow 13b2 is provided at the lower end of the downspout 13. In the illustrated example, a horizontal pipe 82 is connected to the elbow 13b2, and rainwater flowing down the downspout 13 is discharged through the horizontal pipe 82. In both of these gutter systems RG5, a first support 14A1 is provided below a position P, which is 300 mm above the elbow 13b2, of the pipe 13a having the elbow 13b2 provided at its lower end. The drain member 8 can induce a siphoning phenomenon. When a siphoning phenomenon occurs in the downspout 13, a large amount of water is drained. At this time, if the elbow 13b2 changes the direction of the water flow, the downspout 13 is likely to vibrate. Here, in the gutter systems RG4 and RG5, the first support 14A1 is disposed below a position at the lower end of the pipe 13a that is 300 mm above the elbow 13b2. Therefore, it is possible to loosely support the portion of the downspout 13 that is located directly above the elbow 13b2 and is prone to vibration. As a result, vibration in the downspout 13 can be suppressed.

[0081] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0082] The eaves gutter 7 may not be necessary. In the above embodiment, the portions of the first member 45 positioned above and below the first hole protrude in the left and right directions, respectively, but they do not have to protrude. The band and the second member 46 do not have to be fixed together by the bolts 74 . The first member 45 and the second member 46 may be connected by a bolt 74 .

[0083] In addition, the components in this embodiment can be replaced with well-known components as appropriate, without departing from the spirit of the present invention. [Explanation of symbols]

[0084] 1. Folded plate roof (roof) 1A Eaves 2 Wall section (wall) 3 Yamabe 4 Valley 5 Mounting bolts 6 Eave gutter support (1st support) 7. Eaves gutter (first gutter) 8 Drain member 9 short tube 10A No. 1 elbow pipe Exit 10A1 10A2 mouth 10B Second elbow pipe 10B Second elbow 10B1 mouth 10B2 mouth 11 First joint 12 Second joint 12A rubber ring part 13 Downspout (Second Gutter) 13a Pipe 13A top end 13a1 1st Pipe 13a2 2nd Pipe 13b Joint 13b1 Expansion joint 13b2 elbow 14 Downpipe support (second support) 14A Downspout support 14A1 1st support 14A2 Second support 14B Downpipe support 14B1 1st support 14B2 Second support 15 Lower drain member 16 Upper drain member 17 Siphon Section 18 Lid member 18A outer edge 18B Top surface 19 Vertical ribs 20 Gripping rib 21 Guidance Guide 21A Inner cylinder part 21B Funnel part 21C Feather 21Ca Upper edge of wing 21Cb outer periphery of the wing 21Cc bottom edge 21Cd outer periphery of blade 22 Mouth 23 Inflow opening 31 Upper flange 31B Bottom surface 31C outer edge 32 Inner cylinder 33 Inner cylinder narrowed diameter section 35 Outer thread 36 Step 41 Lower flange 41A Inlet 41B Top surface 42 Outer cylinder 42A bottom end 43 Outer cylinder reduced diameter section 45 First member 45A Proximal end 45B Tip 45C part 45D part 46 Second member 46A Connection part 46B board 46B1 Part 1 46B2 2nd part 46C connection part 49 Mounting bolt 51 1st top piece 52 First vertical piece (one of a pair of vertical pieces) 52A 1st fixed part 53 Horizontal piece 54 Second vertical piece (the other of the pair of vertical pieces) 54A 2nd fixed part 55 Slant piece 56 2nd top piece 58 Mounting bolt 62 Bottom plate 62A through hole 62B Bottom 62C top surface 62D right end 62E left end 63 First side plate (one of a pair of side plates) 63A top end 64 Second side plate (the other of the pair of side plates) 64A top end 66 First convex part (convex part) 66A Hollow part 67 Second convex part (convex part) 67A Hollow part 71 Hole 1 72 2nd hole 73 bands 74 volts 75 Nut 76 Hole 3 80 spacer 82 tube L2 1st interval L3 2nd interval O Drain shaft O1 tube shaft O2 tube shaft P position RG1 Gutter System RG3 Gutter System RG4 Gutter System RG5 Gutter System S1 1st space (space) S1 1st space S2 2nd space (space) S2 2nd space X Anteroposterior direction Y left / right direction

Claims

1. A downspout support device that supports a downspout in front of a wall, a first member fixed to the wall; a second member connected to a band supporting the downspout; A downspout support device characterized in that the first member and the second member are connected so as to be movable in the front-to-rear direction.

2. a first hole is provided in the first member; The downspout support according to claim 1, wherein the second member is arranged in the first hole so as to be movable in the front-rear direction.

3. the first member is a plate-like member with its front and back surfaces facing in the left-right direction, The downspout support according to claim 2, wherein the first member has portions that are positioned above and below the first hole and protrude in the left and right directions, respectively.

4. The downspout support device described in claim 1, characterized in that the second member includes a first portion whose upper end is connected to the first member, and a second portion extending forward from the lower end of the first portion and connecting to the band.

5. a first hole is provided in the first member; the first portion is disposed in the first hole; a second hole is provided in the second portion; The downspout support according to claim 4, wherein the first hole is longer in the front-to-rear direction than the second hole.

6. Downspouts and A downspout support according to any one of claims 1 to 5, A drainage system characterized in that the downspout support supports the downspout in front of the wall.

7. a plurality of gutter supports fixed to the roof or wall of the building at intervals in the horizontal direction; Further provided is a rain gutter supported by the plurality of rain gutter supports, The drainage system of claim 6 , wherein the downspout includes a structure extending downwardly from the gutter.

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