Exterior wall gutter structure

Abstract

To improve the design of horizontal gutters while ensuring the rainwater collection function of horizontal gutters provided on the outdoor side of exterior walls.SOLUTION: In a gutter structure of an exterior wall 11, a horizontal gutter 8 is provided on the outdoor side of the exterior wall 11. The horizontal gutter 8 includes a horizontal member 50 and a flow path member 60 that extend in the longitudinal direction of the horizontal gutter 8. The horizontal member 50 has a groove part 51 that is open upward and accommodates the flow path member 60. The flow path member 60 has a flow path part 61 that is disposed inside the groove part 51 and receives rainwater.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a gutter structure of an outer wall provided with a horizontal gutter on the outdoor side of the outer wall.

Background Art

[0002] In recent years, in order to effectively utilize water resources, it has been required to store and utilize rainwater. Even in the outer wall of a building, in order to store rainwater, rainwater may be collected by a horizontal gutter. The horizontal gutter is provided on the outdoor side of the outer wall and allows rainwater to flow and be collected. Further, regarding such a gutter structure of an outer wall, conventionally, a dirt prevention structure for the outer wall that receives water by each of a horizontal gutter portion provided in the jointless portion of a curtain wall and a horizontal gutter portion provided in a gutter member of a fixed window is known (see Patent Document 1).

[0003] In the conventional outer wall dirt prevention structure described in Patent Document 1, the horizontal gutter portion provided in the jointless portion of the curtain wall is formed in a groove shape continuous in the longitudinal direction of the jointless portion by an upward protruding piece portion of a decorative cover, a locking piece in the vicinity of the protruding piece portion, and an upper end portion on the outdoor side of a holding portion that holds the lower end edge of the panel. Further, in the horizontal gutter portion provided in the gutter member of the fixed window, a gutter member having a cross-sectional F shape provided with a horizontal gutter portion is provided on the upper frame.

[0004] However, the horizontal gutter portion provided in the jointless portion of the curtain wall is formed in a groove shape by combining a plurality of portions, and it is difficult to freely change the external shape. Further, the horizontal gutter portion provided in the gutter member of the fixed window is restricted in its external shape in order to ensure the function as a horizontal gutter (for example, a water gradient). Therefore, in the conventional outer wall dirt prevention structure described in Patent Document 1, there is room for improvement from the viewpoint of the designability of the horizontal gutter portion.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

[0006] This invention has been made in view of the aforementioned conventional problems, and its purpose is to improve the aesthetic appearance of the gutter while ensuring the rainwater collection function of the gutter installed on the outdoor side of the exterior wall. [Means for solving the problem]

[0007] The present invention An exterior wall gutter structure in which a horizontal gutter is installed on the exterior side of the exterior wall, The aforementioned gutter comprises a horizontal member and a flow channel member extending in the longitudinal direction of the gutter, The aforementioned horizontal member has a groove that opens upward and accommodates the flow channel material. The outdoor support portion and the indoor support portion protrude from the upper part of the groove portion and support the flow channel material, It has, The aforementioned flow channel material is It is located between the aforementioned outdoor support portion and the aforementioned indoor support portion, A channel section located inside the groove to receive rainwater. The outdoor side fixing part and the indoor side fixing part are fixed to the horizontal member, protruding from the upper part of the flow channel section. to have death, The aforementioned outdoor-side fixing portion is placed on the outdoor-side support portion on the outdoor side of the flow channel portion and fixed to the outdoor-side support portion, covering the area between the flow channel portion and the horizontal member from above. The aforementioned indoor-side fixing portion is placed on the indoor-side support portion on the indoor side of the flow path portion and fixed to the indoor-side support portion, covering the area between the flow path portion and the horizontal member from above. This is a gutter structure on the exterior wall. [Effects of the Invention]

[0008] According to the present invention, it is possible to improve the aesthetic appearance of the gutter while ensuring the rainwater collection function of the gutter installed on the outdoor side of the exterior wall. [Brief explanation of the drawing]

[0009] [Figure 1] This is a front view showing the curtain wall of this embodiment. [Figure 2] This is a cross-sectional view showing the curtain wall of this embodiment. [Figure 3] This is a longitudinal cross-sectional view showing the curtain wall of this embodiment. [Figure 4] This is a cross-sectional view of the curtain wall including the gutter, as seen from above, according to this embodiment. [Figure 5] This is a perspective view showing a portion of the curtain wall of this embodiment. [Figure 6] This is a front view of the curtain wall, including the gutter and exterior materials, as seen from the outdoor side in this embodiment. [Figure 7] Figure 6 is a longitudinal cross-sectional view showing the curtain wall unit of this embodiment, cut along the line X1-X1. [Figure 8] Figure 6 is a longitudinal cross-sectional view showing the curtain wall unit of this embodiment, cut along the line X2-X2. [Modes for carrying out the invention]

[0010] One embodiment of the exterior wall gutter structure of the present invention will be described with reference to the drawings. In this embodiment of the gutter structure for an exterior wall, a horizontal gutter is provided on the outdoor side of the exterior wall, and rainwater is collected by the horizontal gutter. The exterior wall is the exterior wall of a building and is installed between the indoor (indoor) and outdoor (outdoor) areas of the building. The horizontal gutter is provided at a location exposed on the outdoor side of the exterior wall and is exposed on the outdoor side of the exterior wall. Below, the gutter structure for an exterior wall will be described using the case where the exterior wall is a curtain wall of a building as an example.

[0011] Figure 1 is a front view of the curtain wall 1 of this embodiment, showing the curtain wall 1 installed in building 10 as viewed from the outside. As shown in the figure, the curtain wall 1 comprises multiple curtain wall units 2 installed side by side on the building 10. The curtain wall 1 and the curtain wall units 2 are installed on the exterior wall 11 of the building 10, forming the exterior wall 11 of the building 10. The curtain wall units 2 are panel units that make up the curtain wall 1 and are assembled as units in advance before being installed on the building 10. The multiple curtain wall units 2 are installed side by side in the vertical direction R and the horizontal direction S, and each is combined with the adjacent curtain wall unit 2.

[0012] When the curtain wall 1 (outer wall 11) installed on the building 10 is viewed from the front, the vertical direction is the up-down direction R, and the horizontal direction is the left-right direction S. In FIG. 1, the up-down direction R is the vertical direction, and the left-right direction S is the horizontal direction. The inside-outside direction is the inside-outside direction (indoor-outdoor direction) of the curtain wall 1 installed on the building 10. Also, the inside-outside direction is the front-back direction when the curtain wall 1 installed on the building 10 is viewed from the front, and in FIG. 1, it is the horizontal direction orthogonal to the left-right direction S. Thus, the directions related to the curtain wall 1 are specified in the state of being installed on the building 10. Also, regarding the curtain wall 1, the indoor side and the outdoor side are the indoor side and the outdoor side in the state of being installed on the building 10.

[0013] FIG. 2 is a cross-sectional view showing the curtain wall 1 of the present embodiment, and FIG. 3 is a longitudinal-sectional view showing the curtain wall 1 of the present embodiment. In FIG. 3, a part of the building 10 located on the indoor side of the curtain wall 1 is shown. As shown in FIGS. 1 to 3, the curtain wall 1 and the curtain wall unit 2 are arranged on the outdoor side of the building body 12 of the building 10, attached to the building body 12 of the building 10, and installed between the indoor and outdoor of the building 10.

[0014] The curtain wall unit 2 includes two panel bodies 2A and a frame body 3 surrounding the panel bodies 2A. The frame bodies 3 of the plurality of curtain wall units 2 are combined with the frame bodies 3 of the adjacent curtain wall units 2 respectively. The frame body 3 is a rectangular opening frame forming an opening 3A, and is attached to the building body 12 of the building 10. The panel body 2A is a rectangular glass panel body (for example, plate glass, laminated glass, or combined glass), and is arranged in the opening 3A of the frame body 3.

[0015] The frame 3 has five frames 4-7 (upper frame 4, lower frame 5, a pair of vertical frames 6, and horizontal middle frame 7) that are combined with each other, and the frames 4-7 form a rectangular opening 3A. The frames 4-7 of the frame 3 are the frame materials that make up the frame 3, and each is made of a metal (for example, made of aluminum alloy) profile formed by extrusion molding. The upper frame 4, lower frame 5, and horizontal middle frame 7 are horizontal frames that extend in the horizontal direction (left-right direction S), and the pair of vertical frames 6 extend in the vertical direction (up-down direction R).

[0016] The upper frame 4 and lower frame 5 are the upper and lower horizontal frames of the frame body 3, located at the top and bottom of the frame body 3. The pair of vertical frames 6 are the left and right side frames of the frame body 3, located at the left and right sides of the frame body 3. The ends of the upper frame 4, lower frame 5, and the pair of vertical frames 6 are connected to each other, forming the frame 4-6. The horizontal middle frame 7 is a transom located between the upper frame 4 and lower frame 5, connected to the pair of vertical frames 6, and divides the opening 3A of the frame body 3 vertically. The panel body 2A is fitted into the frame body 3 and held in place by frames 4-7 of the frame body 3.

[0017] The curtain wall unit 2 includes a horizontal gutter 8 located on the outdoor side of the horizontal middle frame 7, and left and right outdoor members 20 located on the outdoor side of each of the pair of vertical frames 6. On the outdoor side of the curtain wall 1, the horizontal gutter 8 extends horizontally, and the outdoor members 20 extend vertically. The horizontal gutter 8 is connected to the horizontal middle frame 7 and protrudes from the horizontal middle frame 7 to the outdoor side. The outdoor members 20 are connected to the vertical frames 6 and protrude from the vertical frames 6 to the outdoor side. The horizontal gutter 8 spans across the left and right outdoor members 20, extending from one outdoor member 20 to the other. The horizontal gutter 8 is attached to the left and right outdoor members 20 by screws (not shown) that fasten both ends of the horizontal gutter 8 in the longitudinal direction (left-right direction S) to the outdoor members 20.

[0018] Figure 4 is a cross-sectional view of the curtain wall 1 including the gutter 8, as seen from above, according to this embodiment. Figure 5 is a perspective view showing a part of the curtain wall 1 of this embodiment, showing the gutter 8 and the exterior material 20 as seen from diagonally above. In Figures 4 and 5, rainwater is schematically represented by a dashed line, and the direction of rainwater flow is indicated by an arrow. As shown in the figure, the vertical frame 6, the horizontal middle frame 7, and the outdoor material 20 are each formed in a hollow shape. In addition, the horizontal gutter 8 and the outdoor material 20 are located on the outdoor side of the panel body 2A and protrude outwards.

[0019] The outdoor material 20 is fixed to the outdoor surface 6A (outdoor side facing) of the vertical frame 6 by bolts 30, and is positioned along the vertical frame 6, extending in the longitudinal direction (up and down direction R) of the vertical frame 6. The outdoor material 20 also has two cylindrical hollow sections 21 and 22 (outdoor side hollow section 21 and indoor side hollow section 22). The outdoor side hollow section 21 and the indoor side hollow section 22 are formed side by side in the indoor-outdoor direction T and extend in the longitudinal direction (up and down direction R) of the outdoor material 20. The outdoor side hollow section 21 is located on the outdoor side of the indoor side hollow section 22 and is positioned away from the vertical frame 6, panel body 2A, and horizontal middle frame 7 on the outdoor side.

[0020] The curtain wall 1 is equipped with a downpipe 9 provided on the outdoor material 20 of the curtain wall unit 2. Here, the downpipe 9 is a cylindrical portion including the outdoor-side hollow portion 21 of one of the left and right outdoor material 20. The downpipe 9 extends vertically and directs rainwater downward. The downpipe 9 is also integrally formed with the outdoor material 20, forming a rainwater channel (vertical channel 9A). The vertical channel 9A is the space inside the downpipe 9 and extends in the longitudinal direction (up and down direction R) of the downpipe 9. The downpipe 9 and the vertical channel 9A are open to the upward and downward directions.

[0021] Curtain wall 1 and curtain wall unit 2 collect rainwater horizontally via horizontal gutters 8 and vertically via downpipes 9. Horizontal gutters 8 are positioned along horizontal intermediate frames 7 and extend in the longitudinal direction (left-right direction S) of horizontal intermediate frames 7. Horizontal intermediate frames 7 are horizontal structural members 40 that constitute the exterior wall 11 of building 10, and are installed on the exterior wall 11 together with curtain wall units 2, extending horizontally. Horizontal gutters 8 are positioned on the outdoor side of horizontal structural members 40, between the left and right outdoor members 20, and are connected to the downpipe 9 of one of the outdoor members 20.

[0022] The gutter 8 comprises a horizontal member 50 and a flow channel member 60 extending in the longitudinal direction of the gutter 8. The horizontal member 50 and the flow channel member 60 are made of metal (for example, aluminum alloy) and are each formed in a groove shape that is open upward. The horizontal member 50 is an outer member located on the outside of the gutter 8 and houses the flow channel member 60. The flow channel member 60 is an inner member located on the inside of the gutter 8 and is positioned inside the horizontal member 50. A void is formed between the horizontal member 50 and the flow channel member 60, and the horizontal member 50 and the flow channel member 60 form a hollow shape of the gutter 8.

[0023] The channel material 60 is attached to and held by the horizontal member 50. The horizontal member 50 is positioned from the outdoor side of the channel material 60, passing under it and extending to the indoor side, covering the channel material 60 on the outdoor, underside, and indoor sides. On the outdoor side of the curtain wall 1 and the exterior wall 11 of the building 10, the channel material 60 is shielded on the outdoor and underside by the horizontal member 50. With the channel material 60 housed inside the horizontal member 50, it forms a channel for rainwater (horizontal channel 8A) that extends in the longitudinal direction of the gutter 8.

[0024] Figure 6 is a front view of the curtain wall 1 including the gutter 8 and outdoor material 20 as seen from the outdoor side of this embodiment, with the flow channel material 60 of the gutter 8 indicated by a dashed line. Figure 7 is a longitudinal cross-sectional view showing the curtain wall unit 2 of this embodiment cut along the line X1-X1 in Figure 6, and Figure 8 is a longitudinal cross-sectional view showing the curtain wall unit 2 of this embodiment cut along the line X2-X2 in Figure 6. In Figures 6 to 8, rainwater is schematically shown by a dashed line, and the direction of rainwater flow is indicated by an arrow.

[0025] As shown in the figure, the horizontal structural member 40 (horizontal middle frame 7) is located on the indoor side of the horizontal gutter 8 and horizontal member 50. The horizontal structural member 40 also has upper and lower holding parts 41 that hold the panel body 2A, an outdoor surface part 42 located on the outdoor side, and a receiving part 43 that receives the horizontal member 50 of the gutter 8. The horizontal structural member 40 is positioned between the upper and lower panel bodies 2A and holds the upper and lower panel bodies 2A with the upper and lower groove-shaped holding parts 41. The outdoor surface part 42 is the outdoor visible part of the horizontal structural member 40 and is positioned facing the outdoors. The receiving part 43 is a hook-shaped part that protrudes upward and is provided on the outdoor surface part 42 to lock the horizontal member 50.

[0026] The horizontal gutter 8 and horizontal member 50 are located on the outdoor side of the horizontal structural member 40 (in this case, the outdoor surface portion 42) and are arranged adjacent to the horizontal structural member 40 in the indoor-outdoor direction T. The horizontal member 50 is arranged along the horizontal structural member 40 and extends in the longitudinal direction of the horizontal structural member 40. The horizontal member 50 also has a groove portion 51 that is open upward, a locking portion 52 that locks into the horizontal structural member 40, and two support portions 53, 54 (outdoor side support portion 53, indoor side support portion 54) that support the flow channel material 60. The groove portion 51 is a receiving groove portion that accommodates the flow channel material 60 and extends in the longitudinal direction of the horizontal gutter 8.

[0027] The groove 51 of the horizontal member 50 has a groove bottom 55 located below the flow channel material 60 and two groove walls 56 and 57 (outdoor groove wall 56, indoor groove wall 57) located on both sides of the flow channel material 60 in the indoor / outdoor direction T, and is formed in a concave shape that opens upward by the groove bottom 55 and the groove walls 56 and 57. Multiple screw holes 58 are provided in the groove bottom 55 of the groove 51, and the ends on both sides in the longitudinal direction of the horizontal member 50 are fixed to the outdoor material 20 by screws (not shown) that are screwed into the screw holes 58.

[0028] The two groove walls 56 and 57 of the groove 51 protrude upward from the groove bottom 55, are spaced apart in the indoor-outdoor direction T, and face each other in the indoor-outdoor direction T. The outdoor groove wall 56 is located on the outdoor side of the flow channel material 60, and the indoor groove wall 57 is located on the indoor side of the flow channel material 60. The flow channel material 60 is positioned inside the groove 51, above the groove bottom 55 and between the two groove walls 56 and 57.

[0029] The locking portion 52 of the horizontal member 50 is located on the indoor side of the groove wall 57 on the indoor side of the groove 51 and is received from above by the receiving portion 43 of the horizontal component 40. The locking portion 52 is also hooked onto the receiving portion 43 from above and locked to the receiving portion 43. The horizontal member 50 is in contact with the horizontal component 40 and connected to the horizontal component 40 by the locking portion 52. On the indoor side of the groove 51 of the horizontal member 50, the locking portion 52 covers the area between the groove 51 of the horizontal member 50 and the horizontal component 40 from above, preventing rainwater from entering the area between the groove 51 of the horizontal member 50 and the horizontal component 40.

[0030] The outdoor support portion 53 and the indoor support portion 54 of the horizontal member 50 are projections (support pieces) that protrude from the upper part of the groove 51 in the indoor-outdoor direction T, and extend in the longitudinal direction (left-right direction S) of the horizontal member 50. The outdoor support portion 53 protrudes indoors from the outdoor groove wall 56 of the groove 51, and the indoor support portion 54 protrudes outdoors from the indoor groove wall 57 of the groove 51. The outdoor support portion 53 and the indoor support portion 54 protrude toward each other and face each other in the indoor-outdoor direction T. The flow channel material 60 is placed on the outdoor support portion 53 and the indoor support portion 54 from above.

[0031] The channel material 60 has a groove-shaped channel section 61 for receiving and draining rainwater, and two fixing parts 62 and 63 (outdoor side fixing part 62, indoor side fixing part 63) fixed to the horizontal member 50 by screws 31 and 32. The channel section 61 is located in the indoor-outdoor direction T between the two groove walls 56 and 57 of the groove section 51 of the horizontal member 50, and between the two support parts 53 and 54. The channel section 61 is a channel groove that opens upward, and the channel material 60 forms a horizontal channel 8A for rainwater by the channel section 61. The horizontal channel 8A is the space inside the channel section 61. The channel section 61 and the horizontal channel 8A are arranged inside the groove section 51 of the horizontal member 50 and extend along the groove section 51 in the longitudinal direction of the gutter 8. In this state, the channel material 60 covers the groove section 51 from above.

[0032] The flow channel section 61 of the flow channel material 60 has a bottom section 64 and two wall sections 65 and 66 (outdoor side wall section 65 and indoor side wall section 66) that demarcate the lateral flow channel 8A, and is formed in a concave shape that opens upward by the bottom section 64 and the wall sections 65 and 66. The bottom section 64 is located at the bottom of the flow channel section 61 and is arranged along the indoor-outdoor direction T. The two wall sections 65 and 66 are located on both sides of the flow channel section 61 in the indoor-outdoor direction T and are arranged along the vertical direction R. The two wall sections 65 and 66 also protrude upward from the bottom section 64, are spaced apart in the indoor-outdoor direction T, and face each other in the indoor-outdoor direction T. The lateral flow channel 8A is formed above the bottom section 64 and between the two wall sections 65 and 66.

[0033] The outdoor fixing portion 62 and indoor fixing portion 63 of the flow channel material 60 are projections (fixing pieces) that protrude from the upper part of the flow channel 61 in the indoor-outdoor direction T, and extend in the longitudinal direction (left-right direction S) of the flow channel material 60. The outdoor fixing portion 62 protrudes to the outside from the outdoor side wall portion 65 of the flow channel 61 and is fixed to the horizontal member 50 on the outdoor side of the flow channel 61 with screws 31. The indoor fixing portion 63 protrudes to the inside from the indoor side wall portion 66 of the flow channel 61 and is fixed to the horizontal member 50 on the indoor side of the flow channel 61 with screws 32.

[0034] The outdoor fixing portion 62 of the flow channel material 60 is placed from above on the outdoor support portion 53 of the horizontal member 50 and fixed to the outdoor support portion 53 by screws 31, thereby being supported by the outdoor support portion 53. Similarly, the indoor fixing portion 63 of the flow channel material 60 is placed from above on the indoor support portion 54 of the horizontal member 50 and fixed to the indoor support portion 54 by screws 32, thereby being supported by the indoor support portion 54. The horizontal member 50 supports the fixing portions 62, 63 and the flow channel material 60 with the support portions 53 and 54, and holds the flow channel material 60.

[0035] On the outdoor side of the channel section 61, the outdoor fixing part 62 covers the area between the channel section 61 and the horizontal member 50 (outdoor support part 53) from above, preventing rainwater from entering the area between the channel section 61 and the horizontal member 50. Similarly, on the indoor side of the channel section 61, the indoor fixing part 63 covers the area between the channel section 61 and the horizontal member 50 (indoor support part 54) from above, preventing rainwater from entering the area between the channel section 61 and the horizontal member 50. Rainwater flows over the fixing parts 62 and 63 towards the inside of the channel section 61 and into the inside of the channel section 61.

[0036] Regarding the orientation of the horizontal member 50, groove 51, flow channel material 60, and flow channel section 61, their respective longitudinal directions are the same as the longitudinal direction of the gutter 8, which is the horizontal direction (left-right direction S). The horizontal member 50, groove 51, flow channel material 60, and flow channel section 61 extend continuously in the longitudinal direction of the gutter 8. However, the flow channel section 61 (horizontal flow channel 8A) has a water slope in order to carry rainwater and extends inclined with respect to the horizontal direction inside the groove 51 (see Figure 6). The flow channel section 61 receives rainwater from above, carries the rainwater in the longitudinal direction of the gutter 8, and collects the rainwater.

[0037] The ends 61A and 61B (first end 61A and second end 61B) of the channel section 61 are the ends of the channel section 61 in the longitudinal direction and are located at the ends of the gutter 8 in the longitudinal direction. Here, of the ends 61A and 61B on both sides in the longitudinal direction of the channel section 61, the first end 61A is the upstream end (upstream side) of the channel section 61, and the second end 61B is the downstream end (downstream side) of the channel section 61. Therefore, rainwater flows inside the channel section 61 from the first end 61A side to the second end 61B side.

[0038] The downpipe 9 is connected to the end of the flow channel 61 (in this case, the second end 61B) and receives rainwater from the second end 61B of the flow channel 61. At the second end 61B of the flow channel 61, the horizontal flow channel 8A of the horizontal pipe 8 connects to the vertical flow channel 9A of the downpipe 9, thus connecting with the vertical flow channel 9A of the downpipe 9. The rainwater flows through the flow channel 61 to the second end 61B and flows into the inside of the downpipe 9 from the second end 61B of the flow channel 61. The downpipe 9 receives the rainwater from the second end 61B of the flow channel 61, and the rainwater flows downward in the longitudinal direction of the downpipe 9 inside the downpipe 9. The rainwater also flows down inside the downpipe 9 and is collected by the downpipe 9.

[0039] The channel section 61 of the channel material 60 has a water gradient that directs rainwater toward the second end 61B of the channel section 61 and the downpipe 9 in the longitudinal direction of the downpipe 8, and the water gradient guides the rainwater toward the second end 61B of the channel section 61. The water gradient of the channel section 61 is a downward slope that goes down toward the second end 61B of the channel section 61, and the channel section 61 and the water gradient of the channel section 61 extend in the longitudinal direction of the downpipe 8 and gradually incline downward toward the second end 61B of the channel section 61. Here, the water gradient of the channel section 61 is a water gradient that directs rainwater toward the longitudinal direction of the downpipe 8 from the first end 61A of the channel section 61 toward the second end 61B of the channel section 61. That is, the water gradient of the channel section 61 is a downward slope that goes down toward the second end 61B of the channel section 61, and the channel section 61 and the water gradient of the channel section 61 gradually incline downward toward the second end 61B of the channel section 61. Due to the water gradient of the channel section 61, rainwater is guided from a position closer to the first end 61A than the second end 61B toward the second end 61B and flows to the second end 61B.

[0040] The channel section 61 of the channel material 60 has an end wall 67 and a drain opening 68 provided at the second end 61B of the channel section 61 (see Figures 4 and 8). The end wall 67 and the drain opening 68 of the channel section 61 are adjacent to each other in the indoor / outdoor direction T at the second end 61B of the channel section 61. The end wall 67 protrudes upward from the bottom surface 64 of the channel section 61 and closes the indoor side of the second end 61B of the channel section 61. The drain opening 68 is an opening for draining rainwater and is located on the outdoor side of the end wall 67. The drain opening 68 is also open to the inside (horizontal channel 8A) and the outside of the channel section 61 in the longitudinal direction of the horizontal gutter 8. Rainwater is drained from the second end 61B of the channel section 61 toward the downpipe 9 through the drain opening 68.

[0041] The downpipe 9 has an inlet 9B into which rainwater flows in from the second end 61B of the flow channel 61 (see Figures 4 and 5). The inlet 9B is an opening provided in the part of the downpipe 9 that connects to the second end 61B of the flow channel 61, and is open to the inside (vertical flow channel 9A) and the outside of the downpipe 9. The inlet 9B is also a hole (inlet hole) formed in the downpipe 9, which is positioned to overlap with the drain port 68 of the flow channel 61 and connects to the drain port 68. The flow channel 61 and the downpipe 9 are in communication via the drain port 68 and the inlet 9B. Rainwater is drained from the drain port 68 toward the inlet 9B and flows into the inlet 9B. The downpipe 9 receives the rainwater from the inlet 9B and collects the rainwater.

[0042] In the curtain wall 1 described above, rainwater can be received and drained by the channel material 60 of the gutter 8. Furthermore, when the gutter 8 is viewed from the outside, the horizontal members 50 of the gutter 8 can prevent the channel material 60 from being visible. Since the horizontal members 50 can be designed without being constrained by the function of the gutter 8 (for example, water slope), the appearance of the gutter 8 can be freely set by the horizontal members 50. Therefore, it is possible to improve the design of the gutter 8 while ensuring the rainwater collection function of the gutter 8 installed on the outside side of the curtain wall 1.

[0043] The water gradient of the channel section 61 of the channel material 60 allows rainwater to be guided toward the second end 61B of the channel section 61 and collected. Furthermore, rainwater can be guided from the channel section 61 toward the downpipe 9 for smooth collection. Rainwater is reliably guided from the second end 61B of the channel section 61 to the downpipe 9 via the drain port 68 of the channel section 61 and the inlet 9B of the downpipe 9, allowing the downpipe 9 to smoothly receive the rainwater.

[0044] By fixing the outdoor fixing portion 62 and the indoor fixing portion 63 of the channel material 60 to the horizontal member 50, the channel material 60 can be stably held on the horizontal member 50, preventing it from falling off. In addition, since the horizontal member 50 is in contact with the horizontal structural member 40, rainwater intrusion into the area between the horizontal member 50 and the horizontal structural member 40 is suppressed, allowing rainwater flowing down the curtain wall 1 to be directed towards the channel material 60 of the gutter 8.

[0045] Furthermore, the portion corresponding to the outdoor material 20 (outdoor part) may be integrally formed with the vertical frame 6, and the downpipe 9 may be provided on the vertical frame 6. Thus, the downpipe 9 may be part of the vertical frame 6, or it may be a separate component from the vertical frame 6. The horizontal member 50 may be in direct contact with the horizontal component 40, or it may be indirectly in contact with the horizontal component 40 with another component (for example, a watertight material such as rubber) sandwiched between it and the horizontal component 40. The horizontal component 40 is not limited to the horizontal middle frame 7, but may be a horizontal component other than the horizontal middle frame 7 (for example, the upper frame 4, the lower frame 5). The exterior wall 11 is not limited to the curtain wall 1 of the building 10, but may be another exterior wall.

[0046] Downpipes 9 may be provided on each of the left and right outdoor materials 20 of the curtain wall unit 2, and the downpipes 9 may be connected to each of the ends 61A and 61B on both sides of the flow channel section 61. In this case, the flow channel section 61 and the water slope of the flow channel section 61 are gradually sloped downward from the middle part in the longitudinal direction of the flow channel section 61 (for example, the center part) toward each of the ends 61A and 61B on both sides. Accordingly, the water slope of the flow channel section 61 becomes a water slope that directs rainwater from the middle part in the longitudinal direction of the flow channel section 61 toward each of the ends 61A and 61B on both sides toward the longitudinal direction of the horizontal pipe 8. The water slope of the flow channel section 61 is a downward slope that goes down from the middle part in the longitudinal direction of the flow channel section 61 toward each of the ends 61A and 61B on both sides toward the ends 61A and 61B on both sides toward the ends 61A and 61B on both sides toward the middle part in the longitudinal direction of the flow channel section 61. The downpipes 9 are located on both sides of the longitudinal direction of the channel section 61 and receive rainwater from the connected ends 61A and 61B of the channel section 61.

[0047] As described above, this embodiment discloses the exterior wall gutter structure described in (1) to (6) below.

[0048] (1) An exterior wall gutter structure in which a horizontal gutter is provided on the exterior side of the exterior wall, The aforementioned gutter comprises a horizontal member and a flow channel member extending in the longitudinal direction of the gutter, The aforementioned horizontal member has a groove that is open upward and accommodates the flow channel material, The aforementioned channel material is a gutter structure of an outer wall having a channel section that is positioned inside the groove and receives rainwater. (1) The gutter structure for exterior walls described above ensures the rainwater collection function of the horizontal gutter installed on the exterior side of the wall while also improving the aesthetic appearance of the horizontal gutter.

[0049] (2) In the gutter structure of the exterior wall described in (1), The aforementioned channel section is a gutter structure on the exterior wall having a water slope that directs rainwater in the longitudinal direction of the gutter toward the end of the channel section located at the longitudinal end of the gutter. In the exterior wall gutter structure described in (2), the water slope of the channel allows rainwater to be guided toward the end of the channel and collected.

[0050] (3) In the gutter structure of the exterior wall described in (2), An exterior wall gutter structure equipped with a downpipe connected to the end of the aforementioned flow channel to receive rainwater. In the exterior wall gutter structure described in (3), the water slope of the flow channel guides rainwater from the flow channel towards the downpipe, allowing for smooth collection of rainwater.

[0051] (4) In the gutter structure of the exterior wall described in (3), The aforementioned flow channel section has a drainage port provided at the end of the flow channel section for draining rainwater, The downpipe is an exterior wall gutter structure that has an inlet connected to the drain outlet into which rainwater flows. In the exterior wall gutter structure described in (4), rainwater is reliably directed from the end of the channel section to the downpipe via the drainage outlet of the channel section and the inlet of the downpipe, allowing the downpipe to smoothly receive the rainwater.

[0052] (5) In the gutter structure of the exterior wall described in any of (1) to (4), The flow channel material is an exterior wall gutter structure having an outdoor fixing portion fixed to the horizontal member on the outdoor side of the flow channel and an indoor fixing portion fixed to the horizontal member on the indoor side of the flow channel. In the exterior wall gutter structure described in (5), the outdoor and indoor fixing parts of the flow channel material are fixed to the horizontal member, thereby stably holding the flow channel material to the horizontal member and preventing it from falling off the horizontal member.

[0053] (6) In the gutter structure of the exterior wall described in any of (1) to (5), The aforementioned horizontal member is located on the outdoor side of the horizontal structural member constituting the exterior wall and is in contact with the horizontal structural member, forming a gutter structure of the exterior wall. In the exterior wall gutter structure described in (6), rainwater intrusion into the space between the horizontal members and horizontal structural members is suppressed, and rainwater flowing down the exterior wall can be directed towards the channel material of the horizontal gutter. [Explanation of symbols]

[0054] 1...Curtain wall, 2...Curtain wall unit, 2A...Panel body, 3...Frame body, 3A...Opening, 4...Upper frame, 5...Lower frame, 6...Vertical frame, 6A...Outdoor surface, 7...Horizontal middle frame, 8...Horizontal gutter, 8A...Horizontal channel, 9...Downpipe, 9A...Vertical channel, 9B...Inlet, 10...Building, 11...Exterior wall, 12...Structural frame, 20...Outdoor material, 21...Outdoor hollow section, 22...Indoor hollow section, 30...Bolt, 31...Screw, 32...Screw, 40...Horizontal component, 41...Retaining part, 42...Outdoor Surface, 43... receiving part, 50... horizontal member, 51... groove part, 52... locking part, 53... outdoor side support part, 54... indoor side support part, 55... groove bottom, 56... outdoor side groove wall, 57... indoor side groove wall, 58... screw hole, 60... flow channel material, 61... flow channel part, 61A... first end, 61B... second end, 62... outdoor side fixing part, 63... indoor side fixing part, 64... bottom surface part, 65... outdoor side wall surface part, 66... ​​indoor side wall surface part, 67... end wall, 68... drain outlet, R... vertical direction, S... left-right direction, T... indoor-outdoor direction.

Claims

1. An exterior wall gutter structure in which a horizontal gutter is installed on the exterior side of the exterior wall, The aforementioned gutter comprises a horizontal member and a flow channel member extending in the longitudinal direction of the gutter, The horizontal member has a groove that is open upward and accommodates the flow channel material, and an outdoor support portion and an indoor support portion that protrude from the upper part of the groove to support the flow channel material. The channel material has a channel section located between the outdoor support section and the indoor support section and positioned inside the groove section to receive rainwater, and an outdoor fixing section and an indoor fixing section that protrude from the upper part of the channel section and are fixed to the horizontal member. The aforementioned outdoor-side fixing portion is located on the outdoor side of the flow channel, rests on the outdoor-side support portion, and is fixed to the outdoor-side support portion, covering the area between the flow channel and the horizontal member from above. The aforementioned indoor-side fixing portion is an exterior wall gutter structure that is placed on the indoor-side support portion on the indoor side of the flow channel portion and fixed to the indoor-side support portion, covering the area between the flow channel portion and the horizontal member from above.

2. In the exterior wall gutter structure described in claim 1, The aforementioned channel section is a gutter structure on the exterior wall having a water slope that directs rainwater in the longitudinal direction of the gutter toward the end of the channel section located at the longitudinal end of the gutter.

3. In the exterior wall gutter structure described in claim 2, An exterior wall gutter structure equipped with a downpipe connected to the end of the aforementioned flow channel to receive rainwater.

4. In the exterior wall gutter structure described in claim 3, The aforementioned flow channel section has a drainage port provided at the end of the flow channel section for draining rainwater, The downpipe is an exterior wall gutter structure that has an inlet connected to the drain outlet into which rainwater flows.

5. In the exterior wall gutter structure described in any one of claims 1 to 4, The aforementioned horizontal member is located on the outdoor side of the horizontal structural member constituting the exterior wall and is in contact with the horizontal structural member, forming a gutter structure of the exterior wall.

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