Water-repellent mounting structure

Abstract

To provide an attachment structure for a water dripping material capable of improving waterproof properties.SOLUTION: In an attachment structure 10 for a water dripping material, a window sill 32 has a stepped part 36 formed from a front face 37 and a depth face 38. On the window sill 32, a waterproof sheet 8 is provided from an inner circumferential face 35 to an outdoor front face 41 that is continuous to the depth face 38 via the stepped part 36, and the water dripping material 1 is disposed on the waterproof sheet 8. The water dripping material 1 has a water dripping front piece 11, a water dripping depth piece 12, a water dripping body piece 13, and a water dripping attachment piece 14 extending downward from the water dripping depth piece 12 and disposed along the outdoor front face 41. A sealing material 21 is provided between a lower frame 62 of a window frame and the water dripping body piece 13, and a depth space 23 is formed between the front face 37 and the sealing material 21. A water dripping hole 133 communicating with the depth space 23 is formed at the water dripping body piece 13. The water dripping attachment piece 14 is fixed to a skeleton opening 2 with a screw 24.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a mounting structure for a water dripping material that is attached to a structural opening where a frame body of a building fixture is installed. [Background technology]

[0002] A waterproofing structure for a frame that waterproofs the gap between a frame opening and a fitting frame has been known (see Patent Document 1). In this structure, the frame opening frame includes a base member, and the frame includes a lower frame that is placed on the base member. A waterproof sheet is installed on the lower member from its inner periphery to its exterior-facing surface, and a flashing material is attached across the waterproof sheet. The flashing material has a flashing piece and a base end that extends upward from the flashing piece, and this base end is screwed to the base member. A sealant is installed between the flashing piece and the lower frame at a position outside the base end, forming a visible space between the sealant and the base end, and a drainage hole is formed in the flashing piece that connects the visible space to the exterior space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-050503 Summary of the Invention [Problem to be solved by the invention]

[0004] In the structure described in Patent Document 1, the base end of the flashing material that forms the aforementioned projected space is screwed to the base material, so a hole for passing a screw is also formed in the waterproof sheet at the position corresponding to the base end. For this reason, if a large amount of water, such as rainwater, seeps into the projected space through a gap in the sealing material that has deteriorated over time, and the water cannot be drained from the drainage holes quickly enough to keep up, causing the water to accumulate in the projected space, there is a risk that water will seep into the building's framework from the position where the base end is fixed by the screw, through the hole in the waterproof sheet.

[0005] An object of the present invention is to provide a mounting structure for a water-repellent material that can improve waterproofing. [Means for solving the problem]

[0006] The mounting structure for a water flashing material of the present invention is a mounting structure for a water flashing material that mounts a water flashing material to a structural opening in which a frame of a building fixture is installed, the frame having at least a lower frame, the structural opening having a lower material that forms an inner peripheral surface on which the lower frame is installed so as to protrude to the outside of the room, the lower material having a step formed by a visible surface that is continuous with the inner peripheral surface and a visible surface that is continuous with the visible surface, the lower material having a waterproof sheet that is provided on the inner peripheral surface through the step to an exterior visible surface that is continuous with the visible surface, and the water flashing material is arranged on the waterproof sheet, and the water flashing material is arranged along the visible surface. a water drainage visible piece that is connected to the water drainage visible piece and arranged along the visible surface; a water drainage main body piece that extends from the water drainage visible piece to the outside of the room above the water drainage visible piece; and a water drainage attachment piece that extends downward from the water drainage visible piece and is arranged along the outside visible surface, wherein a sealing material is provided between the lower frame and the water drainage main body piece, a visible space is formed between the visible surface and the sealing material, a drainage hole that communicates with the visible space is formed in the water drainage main body piece, and the water drainage attachment piece is fixed to the body opening by a fixing device. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a mounting structure for a water dripping material that can improve waterproofing. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a longitudinal cross-sectional view showing a mounting structure for a water dripping material according to an embodiment of the present invention. [Figure 2] FIG. 2 is a plan view showing the building frame and fixtures to which the flashing material shown in FIG. 1 is attached. [Figure 3]FIG. 2 is an enlarged longitudinal cross-sectional view showing the mounting structure of the water-repellent material shown in FIG. [Figure 4] FIG. 2 is an explanatory diagram showing the water-repellent material shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Configuration of this embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In Figures 1 and 2, the mounting structure 10 for the water flashing material of this embodiment (hereinafter referred to as the mounting structure) is composed of a building structure 4 that forms a structure opening frame 3 that defines a structure opening 2, an inward-opening window 5 as a fixture installed in the structure opening frame 3, a water flashing material 1 attached to the structure opening 2, and a waterproof sheet 8 placed between the building structure 4 and the water flashing material 1. In the following description, the left-right direction of the flashing material 1 is the X-axis direction, the up-down direction (visual direction) of the flashing material 1 is the Y-axis direction, and the visual direction of the flashing material 1 is the Z-axis direction. The X, Y, and Z axis directions are perpendicular to each other.

[0010] The structural opening frame 3 includes a lintel 31 (upper member), a window sill 32 (lower member), and left and right vertical members 33, which are framed together. An exterior wall member 45 is provided outside the lintel 31, window sill 32, and left and right vertical members 33, and a surface member 46 is provided at a position separated from the exterior wall member 45 by a space on the exterior side. The window sill 32 has an inner peripheral surface 35 along the Z-axis direction that defines the structural opening 2, and a step 36 continues from the exterior end of the inner peripheral surface 35. As shown in Figure 3, the step 36 has a generally L-shaped cross section, with a visible surface 37 along the Y-axis direction that is continuous with the inner peripheral surface 35, and a visible surface 38 along the Z-axis that is continuous with the visible surface 37. The visible surface 38 continues to the top surface of the surface member 46, and the exterior end of the visible surface 38 continues to the exterior visible surface 41 of the surface member 46. A waterproof sheet 8 is provided on the window sill 32 from the inner peripheral surface 35 through the stepped portion 36 to the exterior facing surface 41.

[0011] The inward-opening window 5 is a fixture attached to the building frame 4 and comprises a window frame 6 (frame body) and a shoji screen 7 arranged within the window frame 6 so that it can be opened and closed. The window frame 6 comprises an upper frame 61, a lower frame 62, and left and right vertical frames 63, each integrally formed from extruded synthetic resin profiles. One of the left and right vertical stiles 73 is attached to one of the left and right vertical frames 63 via a hinge. The upper frame 61 and the left and right vertical frames 63 are screwed to the lintel 31 and the left and right vertical members 33, and a waterproof sheet 8 is provided between the upper frame 61 and the left and right vertical frames 63 and the lintel 31 and the left and right vertical members 33. The lower frame 62 is installed on the inner peripheral surface 35 of the window sill 32 and has a portion that protrudes outside the room relative to the position of the inner peripheral surface 35. The aforementioned waterproof sheet 8 is provided between the lower frame 62 and the window sill 32. The shoji screen 7 has a frame body 75 having an upper frame 71, a lower frame 72, and left and right vertical frames 73, each formed integrally from an extruded synthetic resin profile, and a surface material 76 such as a glass panel placed within the frame body 75, and is constructed by assembling these together.

[0012] The flashing material 1 is placed on the waterproof sheet 8 and, as shown in Figures 3 and 4, includes a flashing piece 11 arranged along the visible surface 37, a concealed flashing piece 12 that is continuous with the flashing piece 11 and arranged along the visible surface 38, a main flashing piece 13 that extends from the concealed flashing piece 11 to the outside of the room above the concealed flashing piece 12, a flashing attachment piece 14 that extends downward from the concealed flashing piece 12 and is arranged along the exterior visible surface 41, and a continuous flashing piece 15 that is continuous with the main flashing piece 13 and the concealed flashing piece 12. The main flashing piece 13, the flashing piece 11, the concealed flashing piece 12, and the continuous flashing piece 15 form a hollow portion 16 along the X-axis direction. Caps 17 are attached to both ends of the flashing material 1 in the X-axis direction, and the caps 17 close both ends of the hollow portion 16 in the X-axis direction.

[0013] The drain body piece 13 protrudes further outdoors than the exterior wall material 45 in the Z-axis direction and is tilted downward relative to the Z-axis direction so that its outdoor end 131 is positioned lower than its indoor end 132. The drain body piece 13 has drain holes 133 that communicate with the hollow portion 16. The drain holes 133 are located on both ends of the drain body piece 13 in the X-axis direction. A sealant 21 and a backup material 22 are provided between the drain body piece 13 and the underside of the lower frame 62, and a see-through space 23 is formed between the sealant 21 and the visible surface 37. The see-through space 23 is formed between the backup material 22 and the portion 111 of the drain body piece 11. The drain holes 133 also communicate with the see-through space 23 and function as an outside air inlet that introduces outside air from the external space outside the room into the see-through space 23.

[0014] The water cutoff sight piece 11 extends in the Y-axis direction like the sight surface 37, and has a portion 111 that extends above the indoor end 132 of the water cutoff main body piece 13. In addition, the water cutoff sight piece 11 has a portion 112 that extends below the indoor end 122 of the water cutoff sight piece 12, and the lower end of portion 112 abuts against the sight surface 38. The dimension of the water cutoff sight piece 11 in the Y-axis direction is equal to or slightly smaller than the dimension of the sight surface 37 in the Y-axis direction.

[0015] The water drainer piece 12 is inclined obliquely downward with respect to the Z-axis direction so that the outdoor end 121 is positioned lower than the indoor end 122. The angle of inclination of the water drainer piece 12 is the same as the angle of inclination of the water drainer main body piece 13. The portion of the water drainer piece 12 on the outdoor end 121 side is arranged parallel to the Z-axis direction.

[0016] The drain mounting piece 14 is formed by extending downward from the outdoor end 121 of the drain mounting piece 12. This drain mounting piece 14 is fixed at a position between the pair of protrusions 141 to the surface material 46 of the building frame 4 and the window sill 32 by screws 24 as fixing devices.

[0017] The continuous water flashing piece 15 is positioned between the visible surface 38 and the sealing material 21 in the Y-axis direction, and external drainage holes 151 that communicate with the outside are formed on both ends of it in the X-axis direction. The external drainage holes 151 are positioned at the bottom of the continuous water flashing piece 15 in the Y-axis direction, and are configured to allow water that flows to the outside of the room along the visible water flashing piece 12 in the hollow portion 16 to be drained into the external space outside the room. The positions of the external drainage holes 151 and the positions at which the water flashing mounting pieces 14 are fixed by the screws 24 are different from each other in the X-axis direction (the longitudinal direction of the water flashing material 1), and the external drainage holes 151 are positioned outward in the X-axis direction from the above-mentioned fixing positions.

[0018] The following describes how to drain water such as rainwater that has entered the expected space 23 through gaps in the sealing material 21 and backup material 22 that have deteriorated over time in the mounting structure 10 according to this embodiment. First, as shown by arrow A in Figure 3, when water seeps into the projection space 23 through cracks in the aged sealing material 21 and backup material 22, it is drained to the outside of the room through the drain hole 133 and hollow portion 16 and the external drain hole 151. The drained water flows down along the drain mounting piece 14 between the surface material 46 and the exterior wall material 45. Here, if a large amount of water seeps in and the amount of water that enters the projection space 23 exceeds the maximum drainage capacity from the drain hole 133, water may temporarily accumulate in the projection space 23. Even in this case, the projection surface 37 of the step portion 36, the portion of the waterproof sheet 8 along the projection surface 37, and the flashing projection piece 11 do not have holes or the like for fixing the flashing material 1 to the building structure 4 with screws or the like, so it is possible to prevent water accumulating in the projection space from entering the building structure 4 through the aforementioned holes or getting between the flashing projection piece 11 and the waterproof sheet 8. Water drained from the external drain hole 151 flows downward without stagnating in the water drain mounting piece 14, and is prevented from flowing down the waterproof sheet 8 and getting between the water drain mounting piece 14 and the waterproof sheet 8. Furthermore, since the fixing position of the water drain mounting piece 14 with the screw 24 is set to a different position in the X-axis direction from the position of the external drain hole 151, water drained from the external drain hole 151 can be prevented from getting on the part of the water drain mounting piece 14 fixed with the screw 24.

[0019] [Variations] In the above embodiment, the water-repellent material 1 is provided with the continuous water-repellent piece 15, but if the strength of the water-repellent material 1 is sufficiently obtained, the continuous water-repellent piece 15 may be omitted. In the above embodiment, the drain holes 133 and the external drain holes 151 are formed on both ends in the X-axis direction, but their placement, size and number may be set appropriately depending on the required amount of drainage. In the above embodiment, the position of the external drainage hole 151 and the position at which the water drain mounting piece 14 is fixed by the screw 24 are located at different positions in the X-axis direction, but if sufficient waterproof performance can be achieved even if the drained water hits the screw 24, the position of the external drainage hole 151 and the position at which the water drain mounting piece 14 is fixed by the screw 24 may be located at positions that overlap each other in the Y-axis direction. In the above embodiment, the water draining piece 11 extends above the water draining main body piece 13, but if sufficient waterproofing performance can be obtained, the configuration of this extending portion may be omitted. In the above embodiment, the drip-water-removing piece 12 is inclined at the same angle as the drip-water-removing main piece 13, but as long as it can guide water to the outside of the room, it may be inclined at a different angle from the drip-water-removing main piece 13. Also, as long as it can sufficiently drain water, the drip-water-removing main piece 13 may be arranged parallel to the Z-axis direction without being inclined relative to the Z-axis direction. In the above embodiment, the inward-opening window 5 has been described as the fixture, but the fixture is not limited to this and may be any type of window.

[0020] [Summary of the invention] The mounting structure for a water flashing material of the present invention is a mounting structure for a water flashing material that mounts a water flashing material to a structural opening in which a frame of a building fixture is installed, the frame having at least a lower frame, the structural opening having a lower material that forms an inner peripheral surface on which the lower frame is installed so as to protrude to the outside of the room, the lower material having a step formed by a visible surface that is continuous with the inner peripheral surface and a visible surface that is continuous with the visible surface, the lower material having a waterproof sheet that is provided on the inner peripheral surface through the step to an exterior visible surface that is continuous with the visible surface, and the water flashing material is arranged on the waterproof sheet, and the water flashing material is arranged along the visible surface. a water drainage visible piece that is connected to the water drainage visible piece and arranged along the visible surface; a water drainage main body piece that extends from the water drainage visible piece to the outside of the room above the water drainage visible piece; and a water drainage attachment piece that extends downward from the water drainage visible piece and is arranged along the outside visible surface, wherein a sealing material is provided between the lower frame and the water drainage main body piece, a visible space is formed between the visible surface and the sealing material, a drainage hole that communicates with the visible space is formed in the water drainage main body piece, and the water drainage attachment piece is fixed to the body opening by a fixing device. According to the mounting structure for the flashing material of the present invention, the flashing attachment piece is fixed to the opening in the main frame with a fastener, so there is no need to form holes through which fasteners can pass in the waterproof sheet located in the position where the projection space is formed. Therefore, even if a large amount of water, such as rainwater, enters the projection space through a gap in the sealant due to aging, and the water temporarily accumulates in the projection space because the drainage holes cannot keep up with the water drainage, the risk of this accumulated water seeping into the opening in the main frame through the waterproof sheet is reduced. Furthermore, water that flows down through the drainage holes flows downward without accumulating at the fixed position of the flashing attachment piece relative to the opening in the main frame, eliminating the risk of water seeping into the opening in the main frame from the fixed position.

[0021] In the mounting structure of the water draining material of the present invention, the water draining material has a continuous water draining piece that is continuous with the main water draining piece and the prospective water draining piece, and a hollow section is formed by the main water draining piece, the prospective water draining piece, the prospective water draining piece and the continuous water draining piece, and the drainage hole is connected to the hollow section, and the continuous water draining piece may have an external drainage hole that is connected to the outside. With this configuration, the strength can be improved by forming a hollow section in the drain material using the visible drain piece, the prospective drain piece, the main drain piece and the continuous drain piece, and also by forming an external drain hole in the continuous drain piece, water that enters the hollow section through the drainage hole in the drain piece can be drained to the outside through the external drain hole.

[0022] In the mounting structure of the water dripping material of the present invention, the position of the external drainage hole and the position at which the water dripping mounting piece is fixed by the fixing device may be different positions from each other in the longitudinal direction of the water dripping material. With this configuration, water drained to the outside from the external drainage hole flows downward along the drain mounting piece without passing through the aforementioned fixed position, thereby further reducing the risk of water seeping into the building structure through the aforementioned fixed position.

[0023] In the mounting structure of the water draining material of the present invention, the water draining spot piece may extend upward above the water draining main body piece, and the visible space may be formed between the water draining spot piece and the sealing material. With this configuration, water such as rainwater flowing into the visible space can be prevented from entering between the waterproof sheet and the water-repellent material by the extended water-repellent piece, thereby further improving waterproofing.

[0024] In the mounting structure of the water dripping material of the present invention, the water dripping piece may be inclined so that the position of its outdoor end is located lower than the position of its indoor end. With this configuration, the water flowing down from the drain hole is guided toward the outside of the room by the inclined drainage piece as described above, thereby improving drainage performance. [Explanation of symbols]

[0025] 1...Drain material, 10...Drain material mounting structure, 11...Drain sight piece, 111, 112...Part, 12...Drain sight piece, 121, 131...Outdoor end, 122, 132...Indoor end, 13...Drain main body piece, 133...Drain hole, 14...Drain mounting piece, 15...Drain continuous piece, 151...External drain hole, 16...Hollow portion, 17...Cap, 2...Body opening, 21...Sealing material, 22...Backup material, 23...Sight space, 24...Screw (fixing device), 3...frame of opening in main body, 31...lintel, 32...window sill (base material), 33...vertical material, 35...inner surface, 36...step, 37...visible surface, 38...visible surface, 4...building main body, 41...exterior visible surface, 45...exterior wall material, 46...surface material, 5...inward-opening window (fitting), 6...window frame (frame body), 61...upper frame, 62...lower frame, 63...vertical frame, 7...shoji screen, 71...upper frame, 72...lower frame, 73...vertical frame, 75...frame body, 76...surface material, 8...waterproof sheet.

Claims

1. A structure for attaching a flashing material to a frame opening where a frame of a building fixture is installed, The frame body has at least a lower frame, The body opening has a lower member having an inner peripheral surface on which the lower frame is installed so as to protrude to the outside of the room, The lower member has a step portion formed by a visible surface continuous with the inner circumferential surface and a visible surface continuous with the visible surface, A waterproof sheet is provided on the base material from the inner peripheral surface through the step portion to the exterior appearance surface that is continuous with the visible surface, and the water-repellent material is placed on the waterproof sheet, The water draining material has a water draining visible piece arranged along the visible surface, a water draining visible piece that is continuous with the water draining visible piece and arranged along the visible surface, a water draining main body piece that extends from the water draining visible piece to the outside of the room above the water draining visible piece, and a water draining attachment piece that extends downward from the water draining visible piece and is arranged along the outside visible surface, A sealant is provided between the lower frame and the drainer body piece, A visible space is formed between the visible surface and the sealing material, The drain body piece is formed with a drain hole communicating with the expected space, The water drain attachment piece is fixed to the body opening by a fixing device. A mounting structure for a water dripping material.

2. The mounting structure for a water dripping member according to claim 1, The draining material has a draining continuous piece that is continuous with the draining main body piece and the draining prospective piece, and a hollow portion is formed by the draining main body piece, the draining prospective piece, the draining prospective piece and the draining continuous piece, The drain hole communicates with the hollow portion, The continuous water draining piece is formed with an external drainage hole that communicates with the outside. A mounting structure for a water dripping material.

3. The mounting structure for a water dripping member according to claim 2, The position of the external drainage hole and the position where the drain attachment piece is fixed by the fixing device are different from each other in the longitudinal direction of the drainage material. A mounting structure for a water dripping material.

4. The mounting structure for a water dripping member according to claim 1, The drainage piece extends upwardly beyond the drainage body piece, The visible space is formed between the water-repellent piece and the sealing material. A mounting structure for a water dripping material.

5. The mounting structure for a water dripping member according to claim 1, The water drainage piece is inclined so that the position of its outdoor end is located lower than the position of its indoor end. A mounting structure for a water dripping material.

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