Water drainage parts and joinery

Abstract

To prevent an outer wall from being contaminated and to facilitate mounting work.SOLUTION: A draining component 30 includes a lower draining section 31 attached to the lower corner of a frame body 10 projecting from an outer wall W and arranged in the lower region of the frame body 10, and a side draining section 32, at least a part of which is located above the lower draining section 31 and arranged in the side region of the frame body 10, in which a rear surface 31a on the outer wall W side of the lower draining section 31 and a rear surface 32a on the outer wall W side of the side draining section 32 are provided so as to be located on the same plane, and a rear watertight material 3 is provided between the rear surface 31a of the lower draining section 31 and the rear surface 32a of the side draining section 32, where the rear watertight material 3 is interposed within the space with the outer wall W.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a drainage component applicable to structures such as fittings and verandas, and a fitting equipped with the same.

Background Art

[0002] As a drainage component applicable to a structure such as a window protruding from the outer wall of a building, there is one having a lower drainage part arranged in the lower area of the structure and a side drainage part arranged in the side area of the structure. This drainage component is attached, for example, in a state where a screw is screwed into the lower surface of the structure through a screw insertion hole provided in the lower drainage part. According to the structure to which the drainage component is attached as described above, since the water flowing along the outer wall on the side of the structure is guided in a direction away from the outer wall by the side drainage part, it is possible to prevent the situation where the water flowing along the outer wall reaches the lower surface of the structure. Further, since the water flowing along the lower surface of the structure is guided in a direction away from the outer wall by the lower drainage part, it is possible to prevent the water passing through the structure from reaching the outer wall, and the risk of the outer wall being soiled is eliminated (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Incidentally, structures often have reinforcing parts such as ribs inside. Therefore, if a screw aligns with a reinforcing part when being screwed in, it becomes impossible to screw the screw in, making installation difficult. This problem is particularly likely to occur when installing the same flashing part on structures with different shapes in order to share parts. It is possible to solve the above problem by adjusting the mounting position of the flashing part in the direction of its projection relative to the exterior wall. In other words, the position of the screw insertion hole can be shifted to a position that does not align with a reinforcing part by moving the flashing part in the direction of moving it closer to or further away from the exterior wall. However, in order to reliably prevent staining of the exterior wall with the above-mentioned flashing part, it is necessary to have the watertight material provided on the rear surface of the lateral flashing part in contact with the exterior wall, and at the same time, the rear surface of the lower flashing part in contact with the exterior wall without any gaps. Therefore, it is difficult to address this by adjusting the mounting position of the flashing part.

[0005] In view of the above circumstances, the present invention aims to provide a water drainage component and fittings that can prevent the exterior wall from becoming soiled and facilitate installation work. [Means for solving the problem]

[0006] To achieve the above objective, the flashing component according to the present invention is attached to the lower corner of a structure protruding from an outer wall and has a lower flashing portion located in the lower area of ​​the structure and a lateral flashing portion located in the lateral area of ​​the structure, at least a part of which is located above the lower flashing portion and is located in the lateral area of ​​the structure, wherein the rear surface of the lower flashing portion facing the outer wall and the rear surface of the lateral flashing portion facing the outer wall are located on the same plane, and a rear watertight material is provided between the rear surface of the lower flashing portion and the rear surface of the lateral flashing portion and the outer wall. The lateral flashing portion has a lateral water receiving surface that extends downward in a direction away from the outer wall, at least a portion of which is provided, and a lateral side wall portion that is provided so as to project upward from the lateral edge of the lateral water receiving surface and faces the side surface of the structure, the lateral side wall portion has a wide portion at the rear edge close to the outer wall, the rear surface of the wide portion is located on the same plane as the rear surface of the lateral flashing portion, and the rear surface of the wide portion is provided with a rear watertight material interposed between it and the outer wall. It is characterized by having this feature. [Effects of the Invention]

[0007] According to the present invention, since a rear watertight material is provided on the rear surface of the lateral flashing section and the rear surface of the lower flashing section, it is possible to adjust the mounting position to the exterior wall in the depth direction without creating a gap between the exterior wall and the flashing. This prevents the exterior wall from being soiled and simplifies the installation work. [Brief explanation of the drawing]

[0008] [Figure 1] This is a view of a door or window, which is Embodiment 1 of the present invention, as seen from the exterior. [Figure 2] Figure 1 is a cross-sectional view of the main part of the joinery. [Figure 3] Figure 1 shows the main parts of the joinery, with (a) being a vertical cross-sectional view before the installation of the drip edge component and (b) being a vertical cross-sectional view with the drip edge component installed. [Figure 4] Figure 1 shows the drip edge components applicable to the joinery shown in Figure 1, where (a) is a perspective view from the front, (b) is a plan view, (c) is a view from the front, (d) is a bottom view, (e) is a left side view, (f) is a right side view, and (g) is a longitudinal cross-section. [Figure 5] Figure 1 shows a water drainage component applied to the joinery, viewed from the rear side. (a) is a perspective view, and (b) is an exploded perspective view with the rear watertight material removed. [Figure 6] This is a cross-sectional view of the main part of a building fixture to which a water drainage component, which is an embodiment 2 of the present invention, is applied. [Figure 7] Figure 6 shows the main parts of the joinery, with (a) being a vertical cross-sectional view before the installation of the drip edge component and (b) being a vertical cross-sectional view with the drip edge component installed. [Figure 8] Figure 6 shows the drip edge components applicable to the joinery shown in the figure. (a) is a perspective view from the front, (b) is a plan view, (c) is a longitudinal section view, and (d) is an exploded perspective view from the rear with the rear watertight material removed. [Figure 9] This is a perspective view of a modified example 1 of the drainage component according to the present invention, seen from the front. [Figure 10] This is a perspective view of a modified example 2 of the drainage component according to the present invention, seen from the front. [Modes for carrying out the invention]

[0009] The following describes in detail preferred embodiments of the drip edge components and joinery according to the present invention with reference to the attached drawings. For convenience, the terms "depth direction" and "face direction" may be used below. The depth direction is the direction along the depth of the joinery, as indicated by arrow A in the figure. The surface along the depth direction may be referred to as the depth surface. The face direction is the direction along the vertical direction perpendicular to the depth direction, in the case of components that extend horizontally, such as bottom frames. In the case of components that extend vertically, such as vertical frames, the face direction is the direction along the horizontal direction perpendicular to the depth direction. The surface along the face direction may be referred to as the face surface.

[0010] (Embodiment 1) Figures 1 to 3 show a joinery according to Embodiment 1 of the present invention. The joinery illustrated here is called a sliding window, comprising a frame 10 and two sashes 20, and is installed so as to protrude outward from the exterior wall W of a building. The frame 10 is formed by assembling left and right vertical frames 11, an upper frame 12, and a lower frame 13 around the perimeter to form an opening. The vertical frames 11, upper frame 12, and lower frame 13 are each extruded profiles molded from resin, and are configured so that the portion along the entire length has a uniform cross-sectional shape. In this Embodiment 1, the vertical frames 11, upper frame 12, and lower frame 13 have the same cross-sectional shape as each other, and the frame 10 is constructed by welding the 45° inclined joint surfaces formed at each end to each other. More specifically, the vertical frames 11, upper frame 12, and lower frame 13 are each constructed to have a hollow shape and to have the desired strength by appropriately providing ribs 14 inside the hollow interior. Each shoji screen 20 is constructed by attaching a frame 22 to the four sides of a surface material 21 such as glass, and the opening of the frame 10 can be opened and closed by sliding it along the left-right direction.

[0011] This joinery has drip-proof parts 30 attached to the connection points between the bottom frame 13 and the left and right vertical frames 11. The drip-proof parts 30 guide rainwater and other water away from the exterior wall W at the lower corners on both sides of the frame 10, and the lower drip-proof part 31 and the lateral drip-proof part 32 are integrally molded from resin or metal. The configuration of the lower drip-proof part 31 and the lateral drip-proof part 32 will be described in detail below. Note that the drip-proof part 30 applied in Embodiment 1 has a symmetrical configuration on the left and right sides. For this reason, the drip-proof part 30 attached to the lower left edge when viewed from the outside will be described as representative. Also, for convenience, the side facing the exterior wall W will be considered the rear, the outside will be considered the front, and the direction of the drip-proof part 30 will be determined by the mounting position.

[0012] The lower water drain section 31 is located in the lower area of ​​the frame 10 and, as shown in Figures 4 and 5, has a lower water receiving surface 41, a rear edge wall section 42, a lower side wall section 43, and a columnar section 44. The lower water receiving surface 41 constitutes the upper surface of the lower water drain section 31, extending almost horizontally at the rear and downward toward the front, with the front section extending almost vertically. The rear edge wall section 42 protrudes upward from the position that forms the rear edge of the lower water receiving surface 41. The protrusion dimension of the rear edge wall section 42 from the lower water receiving surface 41 is constant throughout the entire area. The lower side wall section 43 protrudes upward from the position that forms the side edge of the lower water receiving surface 41. The rear edge of the lower side wall section 43 protrudes approximately the same as that of the rear edge wall section 42 from the lower water receiving surface 41, and its rear edge is joined to the rear edge wall section 42 so as to be continuous with it. The front edge of the lower side wall portion 43 is formed such that its upward projection dimension is downward toward the front. The front edge of the lower side wall portion 43 protrudes forward beyond the front surface of the lower water receiving surface 41. The columnar portion 44 protrudes upward from a portion that extends almost horizontally on the lower water receiving surface 41 and has a screw insertion hole 44a in the center that runs vertically. The screw insertion hole 44a is a through hole with a circular cross-section and is configured with an inner diameter that allows the shaft portion 1a of the screw 1 to be inserted, but prevents the head portion 1b of the screw 1 from being inserted. As is clear from the figure, the outer diameter dimension of this columnar portion 44 is smaller than the width of the lower water receiving surface 41 and is provided without gap between it and the lateral water drain portion 32, which will be described later, while gaps are secured between it and the lower side wall portion 43 and the rear edge wall portion 42. The upper surface of the columnar portion 44 is at approximately the same height as the upper edge of the rear edge wall portion 42.

[0013] The lateral water drain portion 32 protrudes upward from the lower water drain portion 31, with its upper end positioned in the lateral area of ​​the frame 10, and has a seal receiving portion 45, a lateral water receiving surface 46, and a lateral side wall portion 47. The seal receiving portion 45 is the portion to which the sealing member 2 is applied after the water drain component 30 is installed, and extends upward from the rear edge of the lateral water drain portion 32 toward the front. The front edge of the seal receiving portion 45 is located above the upper edge of the rear edge wall portion 42 of the lower water drain portion 31. The lateral water receiving surface 46 extends downward from the front edge of the seal receiving portion 45 toward the front, and its front surface extends almost vertically. The front surface of the lateral water receiving surface 46 is located on almost the same vertical plane as the front surface of the lower water receiving surface 41. The lateral side wall portion 47 protrudes upward from the position that forms the lateral edge of the lateral water receiving surface 46. The upper surface of the lateral side wall portion 47 extends downward toward the front, and its leading edge extends almost vertically. The leading edge of the lateral side wall portion 47 protrudes forward of the front surface of the lateral water receiving surface 46 and is located on approximately the same vertical plane as the lower side wall portion 43. A wide portion 48 is provided at the rear edge of the lateral side wall portion 47. The wide portion 48 extends from the rear edge of the lateral side wall portion 47, bending at approximately a right angle toward the lower water drain portion 31.

[0014] As is clear from the figure, the rear surface 31a of the lower flashing section 31 (rear edge wall section 42), the rear surface 32a of the lateral flashing section 32, and the rear surface 48a of the wide section 48 are located on the same plane, almost vertically aligned, and a rear watertight material 3 is provided over each of these sections. The rear watertight material 3 is a plate-like material that is highly elastic and watertight, extending almost horizontally to cover the section from the rear surface 31a of the lower flashing section 31 to the rear surface 32a of the lateral flashing section 32, and then bending upwards to extend and cover the rear surface 48a of the wide section 48, thus being configured as a single unit. For example, in the illustrated example, a rear watertight material 3 with a certain plate thickness of about 10 mm is provided on the flashing component 30.

[0015] To attach the drain component 30 having the above configuration to the lower corner portion of the frame body 10, while pressing the rear waterproofing material 3 against the outer wall W, the rear edge wall portion 42 and the lower side wall portion 43 of the lower drain portion 31 are respectively abutted against the lower surface 13a of the lower frame 13, and the side drain portion 32 is abutted against the prospective surface 11a on the outer peripheral side of the vertical frame 11. From this state, if a screw 1 is screwed into the lower surface 13a of the lower frame 13 through the screw insertion hole 44a, the drain component 30 is attached to the lower corner portion of the frame body 10 while ensuring the above state. Thereafter, the sealing member 2 may be applied to the seal receiving portion 45 provided on the side drain portion 32.

[0016] In the state where the drain component 30 is attached, water such as rainwater flowing along the outer wall W on the side of the fitting is received by the side water receiving surface 46 of the side drain portion 32 and guided in a direction away from the outer wall W, so that it is possible to prevent the situation where water flowing along the outer wall W reaches the lower surface 13a of the lower frame 13. Further, the lower water receiving surface 41 of the drain component 30 is disposed in a state facing the lower surface 13a of the lower frame 13. Therefore, water such as rainwater that reaches the lower surface 13a of the lower frame 13 from the lower corner portion of the frame body 10 after falling on the shoji 20 or the frame body 10 is guided to the lower water receiving surface 41 by the rear edge wall portion 42 and the lower side wall portion 43 of the lower drain portion 31, and further guided in a direction away from the outer wall W by the lower water receiving surface 41. For this reason, it is possible to prevent the water that has passed through the shoji 20 or the frame body 10 from reaching the outer wall W, and the possibility of causing a situation where the outer wall W is soiled is eliminated. In addition, it is possible to attach without a gap even to an outer wall W having large irregularities, and it is possible to more reliably prevent water from reaching the outer wall W.

[0017] Here, when screwing the screw 1 onto the lower surface 13a of the lower frame 13 through the drainage component 30, if a rib 14 provided on the lower frame 13 or the vertical frame 11 is disposed on the extension of the screw insertion hole 44a, the operation of screwing the screw 1 becomes difficult. However, according to the above-described drainage component 30, the rear waterproofing material 3 is provided on the rear surface 31a of the lower drainage part 31 and the rear surface 32a of the side drainage part 32. Therefore, even when the mounting position of the drainage component 30 in the expected direction with respect to the outer wall W is adjusted by the thickness of the rear waterproofing material 3, it is possible to prevent a situation where a gap is generated between the drainage component 30 and the outer wall W. As a result, the screw 1 can be screwed in a state where the screw insertion hole 44a of the drainage component 30 is displaced from the rib 14 of the frame body 10, preventing the outer wall W from being soiled and facilitating the mounting operation of the drainage component 30. In addition, according to the above-described drainage component 30, a wide portion 48 is provided at the trailing edge of the side wall portion 47, and the rear waterproofing material 3 is also provided on the rear surface 48a of the wide portion 48. Therefore, even when the mounting position in the expected direction with respect to the outer wall W is adjusted, no gap is generated between the side wall portion 47 and the outer wall W. As a result, there is also no risk of causing a situation where the water on the side water receiving surface 46 leaks to the side of the drainage component 30. <0000​​​​​​​As shown in Figures 8 and 9, in the drainage part 130 of the second embodiment, the columnar portion 144 provided on the lower drainage portion 131 is provided so as to extend forward from the rear edge wall portion 42 and has a screw insertion hole 144a inside. The screw insertion hole 144a is a through hole that is elongated in the front-rear direction and is configured to have a certain width that allows the shaft portion 1a of the screw 1 to be inserted, but prevents the head portion 1b of the screw 1 from being inserted.

[0020] To attach the flashing component 130 having the above configuration to the lower corner of the frame 10, the rear watertight material 3 is pressed against the outer wall W, and the rear edge wall portion 42 and the lower side wall portion 43 of the lower flashing portion 131 are brought into contact with the lower surface 13a of the lower frame 13, respectively, while the lateral flashing portion 32 is brought into contact with the outer surface 11a of the vertical frame 11. From this state, if the screw 1 is screwed into the lower surface 13a of the lower frame 13 through the screw insertion hole 144a, the flashing component 130 will be attached to the lower corner of the frame 10 while maintaining the above state. After that, the sealing member 2 can be applied to the seal receiving portion 45 provided on the lateral flashing portion 32.

[0021] When the water drainage component 130 is installed, rainwater and other water running down the exterior wall W to the side of the door or window is received by the lateral water receiving surface 46 of the lateral water drainage section 32 and guided away from the exterior wall W, thus preventing water running down the exterior wall W from reaching the lower surface 13a of the lower frame 13. Furthermore, rainwater and other water that falls on the shoji screen 20 and frame 10 and then reaches the lower surface 13a of the lower frame 13 from the lower edge of the frame 10 is guided to the lower water receiving surface 41 by the rear edge wall section 42 and lower side wall section 43 of the lower water drainage section 131, and further guided away from the exterior wall W by the lower water receiving surface 41. As a result, it is possible to prevent water that has passed through the shoji screen 20 and frame 10 from reaching the exterior wall W, eliminating the risk of the exterior wall W being soiled. In addition, it is possible to install it without gaps even on exterior walls W with large irregularities, making it possible to more reliably prevent water from reaching the exterior wall W.

[0022] In addition, according to the flashing component 130 of Embodiment 2, it is possible to screw the screw 1 into the lower surface 13a of the lower frame 13 at a position that avoids the ribs 14 provided on the lower frame 13 and the vertical frame 11. That is, according to the flashing component 130 described above, the screw insertion hole 144a is elongated in the front-to-back direction. Therefore, without adjusting the mounting position of the flashing component 130 in the depth direction relative to the outer wall W, the position of the screw 1 can be adjusted and screwed in within the range of the extending length of the screw insertion hole 144a. This makes it possible to screw in the screw 1 while avoiding the ribs 14, preventing the outer wall W from being soiled, and also facilitating the installation of the flashing component 130. Furthermore, there is the advantage that a rear watertight material 3 with a thinner plate thickness can be applied compared to Embodiment 1.

[0023] In the embodiments described above, the lateral water drain portion 32 is made to directly contact the outer surface 11a of the vertical frame 11. However, as shown in Modification 1 in Figure 9 and Modification 2 in Figure 10, a lateral watertight material 4 may be provided on the upper end side surface of the lateral water drain portion 32, and the lateral water drain portion 32 may be made to contact the outer surface 11a of the vertical frame 11 via this lateral watertight material 4. More specifically, in the water drain parts 30 and 130 of Modification 1 and Modification 2, a recess 32b is formed at the upper end of the lateral water drain portion 32, and the lateral watertight material 4 is provided in this recess 32b. In Modification 1, the same reference numerals are used for components similar to those in Embodiment 1, and in Modification 2, the same reference numerals are used for components similar to those in Embodiment 2. These modified versions 1 and 2 have the advantage of more reliably preventing water from the lateral water receiving surface 46 from leaking out of the contact area between the lateral water drain portion 32 and the vertical frame 11 into the lower water drain portions 31 and 131.

[0024] Furthermore, while the embodiments described above illustrate sliding windows equipped with a frame 10 made of resin, the building components may also be made of metal or a metal-resin composite frame made of metal and resin. It can also be applied to all kinds of building components other than sliding windows, such as fixed windows and casement windows. Moreover, the structure does not necessarily have to be a building component; it can also be applied to outdoor structures such as balconies.

[0025] Furthermore, in the embodiments described above, a wide portion 48 is provided at the rear edge of the lateral side wall portion 47, and a rear watertight material 3 is also provided on the rear surface 48a of this wide portion 48, but it is not always necessary to provide a wide portion 48. Also, although the rear watertight material 3 is provided continuously from the rear surface 31a of the lower drainage portions 31, 131 to the rear surface 32a of the lateral drainage portion 32, individual rear watertight materials may be provided on the respective rear surfaces 31a and 32a.

[0026] As described above, the flashing component according to the present invention is a flashing component that is attached to the lower corner of a structure protruding from an outer wall and has a lower flashing portion located in the lower area of ​​the structure and a lateral flashing portion located in the lateral area of ​​the structure, wherein the rear surface of the lower flashing portion facing the outer wall and the rear surface of the lateral flashing portion facing the outer wall are arranged to be on the same plane, and a rear watertight material is provided on the rear surface of the lower flashing portion and the rear surface of the lateral flashing portion, which is interposed between them and the outer wall. According to this invention, since a rear watertight material is provided on the rear surface of the lateral flashing section and the rear surface of the lower flashing section, it is possible to adjust the mounting position to the exterior wall in the depth direction without creating a gap between the exterior wall and the wall. This prevents the exterior wall from being soiled and simplifies the installation work.

[0027] Furthermore, the present invention provides a water drain component as described above, wherein the lateral water drain portion has a lateral water receiving surface that extends downward in a direction away from the outer wall, at least a portion of which is part of the lateral water receiving surface, and a lateral side wall portion that is provided so as to protrude upward from the lateral edge of the lateral water receiving surface and faces the side surface of the structure, the lateral side wall portion is provided with a wide portion at the rear edge close to the outer wall, the rear surface of the wide portion is located on the same plane as the rear surface of the lateral water drain portion, and a rear watertight material interposed between the wide portion and the outer wall is provided on the rear surface of the wide portion. According to this invention, since a lateral side wall is provided on the lateral edge of the lateral water receiving surface, it is possible to prevent water flowing along the lateral water receiving surface from leaking to the side.

[0028] Furthermore, the present invention is characterized in that, in the above-described drainage component, the rear watertight material is provided in a continuous manner from the rear surface of the lower drainage portion to the rear surface of the lateral drainage portion and the rear surface of the wide portion. According to this invention, since the lower flashing section, the lateral flashing section, and the rear watertight material of the wide section are continuous, it is possible to more reliably prevent water that has passed through the structure from reaching the outer wall.

[0029] Furthermore, the present invention is characterized in that, in the above-described drainage component, a screw insertion hole is provided through the lower drainage portion in the vertical direction, and the component is attached to the lower corner of the structure by screwing a screw through the screw insertion hole into the lower surface of the structure. According to this invention, it is possible to attach the product to a structure by screwing a screw into the structure through a screw insertion hole.

[0030] Furthermore, the present invention is characterized in that, in the above-described drainage component, the screw insertion hole is formed in an elongated shape along the direction of approaching and moving away from the outer wall. According to this invention, the screw threading position can be adjusted inside the screw insertion hole, making it possible to adjust the mounting position on the exterior wall in the depth direction.

[0031] Furthermore, the present invention is characterized in that, in the above-described drainage component, a lateral watertight material is provided between the structure and the portion of the lateral drainage portion located above the lower drainage portion. According to this invention, the lateral watertight material makes it possible to prevent water leakage between the lateral flashing and the structure.

[0032] Furthermore, the joinery according to the present invention is characterized in that the above-mentioned water drainage component is attached to the lower corner of the frame. According to this invention, since a rear watertight material is provided on the rear surface of the lateral flashing section and the rear surface of the lower flashing section, it is possible to adjust the mounting position to the exterior wall in the depth direction without creating a gap between the exterior wall and the wall. This prevents the exterior wall from being soiled and simplifies the installation work. [Explanation of symbols]

[0033] 1 Screw, 3 Rear watertight material, 4 Side watertight material, 10 Frame, 30, 130 Drip drain parts, 31, 131 Lower drip section, 31a Rear surface, 32 Side drip section, 32a Rear surface, 41 Lower water receiving surface, 42 Rear edge wall section, 44a, 144a Screw insertion holes, 46 Side water receiving surface, 47 Side wall section, 48 Wide section, 48a Rear surface, W Outer wall

Claims

1. A flashing component having a lower flashing portion attached to the lower corner of a structure protruding from an exterior wall and positioned in the lower area of ​​the structure, and a lateral flashing portion, at least a part of which is positioned above the lower flashing portion and positioned in the lateral area of ​​the structure, The rear surface of the lower flashing section facing the outer wall and the rear surface of the lateral flashing section facing the outer wall are provided to be located on the same plane. The rear surface of the lower flashing section and the rear surface of the lateral flashing section are provided with a rear watertight material interposed between them and the outer wall. The lateral water drainage portion has a lateral water receiving surface that extends downward in a direction away from the outer wall, at least a portion of which is provided to project upward from the lateral edge of the lateral water receiving surface, and a lateral side wall portion that faces the side surface of the structure. The aforementioned lateral wall portion is provided with a wide portion at the rear edge adjacent to the outer wall. The rear surface of the wide portion is located on the same plane as the rear surface of the lateral drain portion. A water drain component characterized in that a rear watertight material is provided on the rear surface of the wide portion, which is interposed between it and the outer wall.

2. The drain component according to claim 1, characterized in that the rear watertight material is provided in a continuous manner from the rear surface of the lower drain portion to the rear surface of the lateral drain portion and the rear surface of the wide portion.

3. The aforementioned lower drain section has screw insertion holes running vertically through it. The drainage component according to claim 1, characterized in that it is attached to the lower corner of the structure by screwing a screw into the lower surface of the structure through the screw insertion hole.

4. The drainage component according to claim 3, characterized in that the screw insertion hole is formed in an elongated shape along the direction of approaching and moving away from the outer wall.

5. The flashing component according to claim 1, characterized in that a lateral watertight material is provided in the portion of the lateral flashing portion that is located above the lower flashing portion, and is interposed between it and the structure.

6. A joinery piece characterized in that a water drain component described in any one of claims 1 to 5 is attached to the lower corner of the frame.

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