JP2009019366A - Drainage structure of periphery of fittings - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage structure of the periphery of fittings, which enables rainwater to be smoothly discharged from the periphery of the fittings without use of complicated shapes for drainage. <P>SOLUTION: Frame-like fittings 3 are attached to the inner periphery of an opening 2 of lathing 1. A head member 4 is provided in the upper section of the fittings 3 in such a manner as to protrude to the outdoor side with respect to the opening 2, and a side frame member 5 is provided on the side section of the fittings 3 in such a manner as to protrude to the outdoor side with respect to the opening 2. An upper external facing material 6 is arranged via a fixed interval above the head member 4, so that an upper drainage passage 7 can be formed between the head member 4 and the upper external facing material 6. A lateral external facing material 8 is arranged via a fixed interval on the lateral side of the side frame member 5, so that a side drainage passage 9 is formed between the side frame member 5 and the lateral external facing material 8 in such a manner as to communicate with the upper drainage passage 7. A lower external facing material 10 is arranged below the side frame member 5, and a draining member 11 is provided in a section from a lower end of the side drainage passage 9 to the lower external facing material 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a drainage structure around a fitting such as a sash.

  FIG. 20 shows an outer wall 50 of a building such as a building. The outer wall 50 is formed by arranging a plurality of exterior members 51, 51... Vertically and horizontally, and a fitting 52 such as a sash is fitted in an opening provided in a part of the outer wall 50. Moreover, the exterior materials 51 and 51 adjacent to each other in the vertical and horizontal directions are connected by butting or fitting, and a vertical joint 53 is formed between the exterior materials 51 and 51 adjacent in the horizontal direction. The vertical joint 53 is filled with a sealing material or the like for waterproofing. In such an outer wall 50, the sealing material may be broken due to deterioration with time or the like, and rainwater may enter the vertical joint 53. In this case, the rainwater uses the space on the indoor side of the vertical joint 53 as a drainage channel. It is designed to drain.

  However, when the vertical joint 53 is formed on the upper side of the joinery 52, the lower end of the drainage channel is open on the upper surface of the joinery 52, so that rainwater that has flowed down the drainage channel loses its place and is on the upper side of the joinery 52. It accumulated or entered the exterior material 51. Accordingly, there is a problem that the deterioration of the joinery 52 and the exterior material 51 is accelerated.

Therefore, for example, in Patent Document 1, rainwater is collected on the upper side of the joinery and then drained through the upper horizontal frame and the vertical frame. However, in this case, the rainwater may not be drained smoothly by collecting rainwater. In addition, there is a problem that the upper horizontal frame and the vertical frame having a complicated shape such as a hollow must be used for drainage, leading to an increase in cost.
JP-A-8-21162

  The present invention has been made in view of the above points, and provides a drainage structure around a joinery that can smoothly drain rainwater from around the joinery without using a member having a complicated shape for drainage. It is for the purpose.

  In the drainage structure around the fitting according to claim 1 of the present invention, a frame-like fitting 3 is attached to the inner periphery of the opening 2 of the wall foundation 1, the upper frame member 4 is attached to the upper part of the fitting 3, and the side part of the fitting 3 The upper frame member 4 and the upper exterior member 6 are provided by projecting the side frame members 5 to the outdoor side of the opening 2 and disposing the upper exterior member 6 above the upper frame member 4 with a certain gap. An upper drainage channel 7 is formed between the side frame member 5 and the side frame member 5 and the side exterior member 8 are disposed on the side of the side frame member 5 with a certain gap therebetween. The side drainage channel 9 is formed so as to communicate with the upper drainage channel 7, the lower exterior material 10 is disposed below the side frame member 5, and the lower end material of the side drainage channel 9 is extended to the lower exterior material 10. The water draining member 11 is provided between the two.

  The drainage structure around the fitting according to claim 2 of the present invention is the flushing material 12 according to claim 1, wherein the flushing material 12 is disposed from the upper frame member 4 to the side of the side frame member 5, and on the outdoor side of the flushing material 12. The upper drainage channel 7 and the side drainage channel 9 are formed.

  The drainage structure around the fitting according to claim 3 of the present invention is characterized in that, in claim 2, the waterproof piece 13 provided on the flushing material 12 is arranged along the side surface of the side frame member 5. is there.

  The drainage structure around the fitting according to claim 4 of the present invention is characterized in that, in claim 2 or 3, the flushing material 12 is formed of a waterproof tape 14.

  The drainage structure around the joinery according to claim 5 of the present invention is characterized in that, in claim 2 or 3, the flushing material 12 is formed integrally with the upper frame member 4 and the side frame member 5. .

  In the invention of claim 1, the upper drainage channel 7 is formed above the upper frame member 4 and the side drainage channel 9 is formed on the side of the side frame member 5, so a complicated shape is required to secure the drainage channel. It is not necessary to use this member, and the rainwater can be allowed to flow down to the side drainage channel 9 without accumulating rainwater in the upper drainage channel 7, so that the rainwater can be smoothly drained from around the fittings.

  In the invention of claim 2, the flushing material 12 can close the gaps between the upper frame member 4 and the side frame member 5 and the wall base 1, and can improve waterproofness.

  In the invention of claim 3, the waterproof piece 13 provided on the flushing material 12 can close the gap between the side frame member 5 and the wall base 1, and the waterproofness can be further improved.

  In the invention of claim 4, the waterproof tape 14 can close the gaps between the upper frame member 4 and the side frame member 5 and the wall base 1, and can improve waterproofness.

  According to the fifth aspect of the present invention, it is possible to prevent a gap between the flushing material 12 and the upper frame member 4 and the side frame member 5 from occurring, thereby further improving the waterproofness.

  Hereinafter, the best mode for carrying out the present invention will be described.

  In the present invention, first, as shown in FIGS. 2A and 2B, a fitting 3 such as a sash is fitted and attached to the opening 2 of the wall base 1. The wall base 1 can be formed by combining structural members such as steel frames. In the case of FIG. 2A, two vertical structures are provided between two horizontal structural members 1a and 1a arranged vertically opposite to each other. By spanning the materials 1b and 1b, a space surrounded by the horizontal structure materials 1a and 1a and the vertical structure materials 1b and 1b can be formed as the opening 2. The joinery 3 is formed by integrally attaching an opening / closing body 3b such as a sliding door inside a square frame-shaped frame body 3a. 2A, FIG. 3A, FIG. 5A, FIG. 6A, FIG. 7, FIG. 9A, FIG. 10A, FIG. 11, FIG. In FIG. 15, FIG. 17, and FIG. 18, the opening / closing body 3b is not shown.

  The frame 3 a of the fitting 3 is provided with a horizontally long upper frame member 4 and a vertically long side frame member 5. The upper frame member 4 and the side frame member 5 can be formed of a metal molding member such as aluminum, like the frame body 3a. The upper frame member 4 is attached to the outdoor side of the upper part (upper frame) of the frame body 3a over substantially the entire length in the lateral direction, and the side frame member 5 is vertically installed on the outdoor side of both sides (side frames) of the frame body 3a. Install long. When the fitting 3 is attached to the inner periphery of the opening 2, the upper frame member 4 and the side frame member 5 are disposed so as to protrude to the outdoor side from the opening 2. Further, the upper frame member 4 is disposed over substantially the entire length along the upper opening edge of the opening 2, and the side frame member 5 is disposed over substantially the entire length along both side opening edges of the opening 2. The Further, the upper frame member 4 is provided with an upper frame mounting piece 4a protruding upward, and the upper frame mounting piece 4a is fixed to the outdoor surface of the horizontal structural member 1a with screws or the like. Further, the side frame member 5 is provided with a side frame mounting piece 5a protruding toward the side (outside opposite to the opening 2), and the side frame mounting piece 5a is an outdoor surface of the vertical structural member 1b. It is fixed with screws.

  After attaching the joinery 3 as described above, the lower exterior material 10 is attached to the wall base 1. The lower exterior material 10 is an outer wall material, and for example, a plate-shaped heat insulating panel (sandwich panel) formed by filling a heat insulating material between two metal skins can be used. The upper part of the lower exterior material 10 is formed as a fitting convex portion 20, and a long concave groove 21 is formed in the lateral direction on the outdoor side surface of the fitting convex portion 20. The lower exterior material 10 can be attached to the wall base 1 by driving a fixing tool 45 such as a drill screw into the groove 21. At this time, a gap 22 is provided between the upper end surface of the fitting convex portion 20 and the lower end of the side frame member 5.

  After attaching the lower exterior material 10 as described above, the draining member 11 is attached as shown in FIGS. The draining member 11 is formed by bending a metal plate such as a color steel plate, and as shown in FIG. 4, a rectangular plate-shaped water receiving portion 11a and an end portion on the outdoor side of the water receiving portion 11a. Drainage piece 11b projecting downward from the water, two waterproof projections 11c, 11c projecting upward at indoor side ends of both side ends of the water receiver 11a, and waterproof projections 11c, 11c Is formed with a rising piece 11e erected along the indoor side end of the water receiving portion 11a and a sealing tape 11d attached to the rising piece 11e. Then, the draining member 11 is inserted into the gap 22 from the outdoor side, the water receiving portion 11a is placed on the upper surface of the fitting convex portion 20 of the lower exterior material 10, and the drainage piece 11b is fitted to the fitting convexity of the lower exterior material 10. It arrange | positions along the outdoor surface of the part 20. FIG. Moreover, the waterproof protrusion 11c is disposed on the side of the side frame member 5 (outside opposite to the opening 2) and overlaps the outdoor side below the side frame attachment piece 5a. The waterproof protrusion 11c covers the outdoor surface of the vertical structural member 1b from the outer surface (the surface opposite to the opening 2) of the side frame member 5, and further to the side of the vertical structural member 1b (on the opposite side to the opening 2). It is formed in a width dimension that protrudes up to.

  After disposing the draining member 11 as described above, the flushing material 12 is attached as shown in FIGS. The flushing material 12 is a metal plate such as a color steel plate and is formed in a rectangular plate shape. Further, the width dimension of the flushing material 12 (width dimension in the short direction) is wider than the width dimension (width dimension in the short direction) of the upper frame attachment piece 4a and the side frame attachment piece 5a, and the width of the waterproof protrusion 11c. It is formed narrower than the dimensions. First, a side flushing material 12a that is long in the vertical direction is disposed on the side of the side frame member 5 (on the side opposite to the opening 2). The lower end portion of the side flushing material 12 a abuts on the upper surface of the water receiving piece 11 a and the upper end portion of the side flushing material 12 a is disposed so as to protrude above the upper frame member 4. Further, the side flushing material 12a is attached to be overlapped on the outdoor side of the waterproof protrusion 11c and the side frame attachment piece 5a. Thereafter, an upper flushing material 12b that is long in the lateral direction is disposed above the upper frame member 4. Both end portions of the upper flushing material 12b are overlapped on the outdoor side of the upper end portion of the side flushing material 12a. Further, the upper flushing material 12b is attached to be overlapped on the outdoor side of the upper frame attaching piece 4a.

  After the flushing material 12 is attached as described above, sealing is performed as shown in FIGS. 6 (a) and 6 (b). As this sealing, an upper inner peripheral sealing 26 that closes a gap between the upper flushing material 12b and the upper frame member 4, a side inner peripheral sealing 27 that closes a gap between the side flushing material 12a and the side frame member 5, A tape-like upper outer periphery sealing 28 disposed along the long side of the upper flushing material 12b, and a long side of the side flushing material 12a (side opposite to the side frame member 5). And a tape-like side outer periphery sealing 29 disposed along the outer periphery. The upper inner circumference sealing 26 and the side inner circumference sealing 27 can be formed by hitting an irregular sealing material along the entire length of the gap between the flushing material 12 and the upper frame member 4 and the side frame member 5. The upper outer periphery sealing 28 and the side outer periphery sealing 29 can be formed by sticking a sealing tape over the entire length of the flushing material 12. And the space above the upper frame member 4 is formed as the upper drainage channel 7 on the outdoor side of the upper flushing material 12b. Further, a space on the outdoor side of the side flushing portion 12 a is formed as the side drainage channel 9 between the side inner circumferential ceiling 27 and the side outer circumferential ceiling 29. The upper drainage channel 7 is long in the lateral direction, and both ends thereof communicate with the upper end of the side drainage channel 9. Further, the side drainage channel 9 is long in the vertical direction, and its upper end communicates with the upper drainage channel 7. The lower part of the side drainage channel 9 extends from the lower end of the side flushing material 12 a to the water receiving part 11 a of the draining member 11. Are formed up to the top surface and the outdoor surface of the drainage piece 11b. A dotted line W indicates rainwater flowing through the upper drainage channel 7 and the side drainage channel 9. In addition, a dam sealing 30 is provided on the draining member 11 at the side of the side flushing material 12a (the side opposite to the side frame member 5). The dam sealing 30 can be formed by sticking a sealing tape from the outdoor surface of the waterproof protrusion 11c to the upper surface of the water receiving piece 11a. Further, an irregular sealing material 31 is filled between the upper end surface of the side frame member 5 and the lower surface of the upper frame member 4.

  After sealing as described above, the side exterior member 8 is attached to the side of the side frame member 5 (the side opposite to the opening 2) as shown in FIG. The side exterior material 8 is a heat insulating panel (sandwich panel) similar to the lower exterior material 10, and its upper end portion is formed as a fitting convex portion 20 and the lower end portion is fitted with the fitting convex portion 20. A possible fitting recess 32 is formed. Also, joint pieces 33 project from the side end face of the side exterior member 8 over substantially the entire length in the vertical direction. This joint piece 33 can be formed by bending the side end portion of the outdoor metal shell of the side exterior member 8 or the like. And after fitting the fitting recessed part 32 of the side cladding | exterior_material 8 to the fitting convex part 20 of the lower cladding | exterior_material 10 attached to the wall base 1 as mentioned above, the fitting convex part of the side cladding | exterior_material 8 The side exterior material 8 can be attached to the wall base 1 by driving a fixing tool such as a drill screw into the 20 concave grooves 21. The tip of the joint piece 33 of the side exterior member 8 attached in this manner is brought into contact with or close to the outer side surface (side surface opposite to the opening 2) of the side frame member 5 with almost no gap. As a result, the side end face of the side exterior member 8 is positioned on the side of the side frame member 5 via a gap corresponding to the width dimension of the joint piece 33, and the side frame member 5 is located on the indoor side of the joint piece 33. A side drainage channel 9 is formed between the outer side surface of the side wall and the side end surface of the side exterior member 8. Further, the fitting convex portion 20 of the side exterior member 8 protrudes slightly above the upper frame member 4.

  Next, the upper exterior material 6 is disposed above the side exterior material 8 and above the upper frame member 4. The upper exterior material 6 is a heat insulating panel (sandwich panel) similar to the side exterior material 8 and the lower exterior material 10, and the upper end portion thereof is formed as a fitting convex portion 20 and the lower end portion is fitted with a convex protrusion. A fitting recess 32 into which the portion 20 can be fitted is formed. And after fitting the fitting recessed part 32 of the upper exterior material 6 to the fitting convex part 20 of the side exterior material 8 attached to the wall base 1 as mentioned above, the fitting convex part 20 of the upper exterior material 6 is fitted. The upper exterior member 6 can be attached to the wall base 1 by driving a fixture such as a drill screw into the concave groove 21. Here, one upper exterior material 6 can be disposed across the upper ends of the two lateral exterior materials 8, 8 located on both sides of the joinery 3. Moreover, it is also possible to dispose the two upper exterior members 6 and 6 adjacent to each other in the lateral direction above the upper frame member 4 of the fitting 3. Then, by providing a gap between the upper surface of the upper frame member 4 and the lower end of the upper exterior member 6, this gap can be formed as the upper drainage channel 7.

  Next, a joinery drainer (sash drainer) 34 is attached on the outdoor side of the lower part of the frame 3 a of the joiner 3. The joinery drainer 34 can be formed of a metal molding member such as aluminum similar to the frame body 3a, and as shown in FIG. 8, the rectangular plate-shaped cover part 35 and the cover part 35 from the outdoor side end downward. It is formed in a substantially L-shaped cross section with the projecting flowing water portion 36. Further, a backup portion 37 that protrudes upward from the indoor side end portion of the cover portion 35 to the side end portion is provided. And on the outdoor side of the lower part of the frame 3a, the cover part 35 is placed on the water receiving piece 11a of the draining member 11 and the running water part 36 is arranged on the outdoor side of the drainage piece 11b, so 34 can be provided. Thereafter, joinery sealing 38 is applied so as to close the gap between the lower end of the side frame member 5 and the cover part 35 and the gap between the lower part of the frame 3 a and the cover part 35.

  Next, as shown in FIG. 9, the gap between the upper frame 4 and the upper exterior member 6, the gap between the side frame member 5 and the joinery drainer 34 and the side exterior member 8, and the joiner drainer 34 and the lower exterior member 10. A finishing seal 39 is formed so as to close the gap. Here, when the gap between the upper frame 4 and the upper exterior member 6 is closed by the finishing sealing 39, the finishing sealing 39 is placed on the outdoor side of the upper draining channel 7 so that the upper draining channel 7 is not blocked by the finishing sealing 39. Filling is performed between the upper surface of the frame 4 and the lower end on the surface side of the upper exterior member 6. Further, when the gap between the side frame member 5 and the side exterior member 8 is closed with the finish sealing 39, the finish sealing 39 is filled on the outdoor side of the joint piece 33 of the side exterior member 8. Further, when the gap between the joinery drainer 34 and the side exterior member 8 is closed by the finishing sealing 39, the finishing sealing 39 is provided on the outdoor side of the side draining passage 9 so that the side draining passage 9 is not blocked by the finishing sealing 39. Is filled between the lower side end face of the side exterior member 8 and the side end face of the joinery drainer 34. Thus, as shown in FIGS. 1A, 1B, and 1C, a drainage structure around the joinery can be formed.

  In the drainage structure of the present invention, even if the primary sealing finish ceiling 39 is damaged due to aging or the like, the rainwater that has entered from the damaged portion passes through the upper drainage channel 7 and the side drainage channel 9 and the lower exterior material 10. It is possible to drain water to the outdoor surface, and it is possible to prevent rainwater from entering the indoor side of the upper exterior material 6 and the side exterior material 8. Further, as shown in FIGS. 10 (a) and 10 (b), when the two upper exterior members 6 and 6 are disposed so as to be adjacent to each other in the lateral direction above the upper frame member 4 of the joinery 3, the adjacent upper portions. The joint pieces 33 and 33 of the exterior materials 6 and 6 are overlapped with each other, and a vertical joint 40 is formed between the side end surfaces of the upper exterior materials 6 and 6 adjacent to each other on the outdoor side, and the vertical joint 40 is finished and sealed. 39 will be filled. Further, on the outdoor side of the overlapped joint pieces 33, 33, a longitudinally long space is formed as a vertical drainage channel 42 between the side end surfaces of the adjacent upper exterior materials 6, 6. The lower end of the vertical drainage channel 42 communicates with the upper drainage channel 7. Therefore, even if the finish sealing 39 filled in the vertical joint 40 is damaged due to deterioration with time, the rainwater infiltrated from the damaged portion is lowered from the vertical drainage channel 42 through the upper drainage channel 7 and the side drainage channel 9. The exterior material 10 can be drained to the outdoor surface, and rainwater can be prevented from entering the indoor side of the upper exterior material 6 and the side exterior material 8. In FIG. 10, reference numeral 1c is a column material provided upright on the upper lateral structure material 1a for fixing the upper exterior material 6, and reference numeral 43 is a column attached to the outdoor surface of the column material 1c over the entire length in the vertical direction. A plate 44 is a tape-like sealing material adhered to the outdoor surface of the discard plate 43 over the entire length in the vertical direction. Moreover, the rain water W which drains from the side part drainage channel 9 to the outdoor surface of the lower exterior material 10 is shown in FIG. 9, FIG.

  11 to 13 show another embodiment. In this drainage structure, as the side flushing material 12a, a waterproof piece 13 provided integrally and formed in a substantially L-shaped cross section is used. The waterproof piece 13 is formed to bend and project to the outdoor side over the entire length of one side of the side flushing member 12a. When the side flushing member 12 a is disposed on the side of the side frame member 5, the waterproof piece 13 is disposed along the outer side surface (side surface opposite to the opening 2) of the side frame member 5. Become. Further, the upper end of the waterproof piece 13 reaches the upper surface position of the upper frame member 4, and the lower end of the waterproof piece 13 reaches the upper surface of the water receiving portion 11a. Other configurations are the same as those in the above embodiment.

  In this drainage structure, since the waterproof piece 13 is provided, waterproofness can be ensured without providing the side inner periphery sealing 27 as in the above embodiment, and the construction is simplified. be able to.

  14 to 16 show another embodiment. In this drainage structure, the flushing material 12 is formed with a flexible waterproof tape 14 instead of using the metal flushing material 12 instead. The waterproof tape 14 is formed in a strip shape with a synthetic resin such as vinyl chloride resin. In the above embodiment, the flushing material 12 is formed by attaching the waterproof tape 14 instead of disposing the metal upper flushing material 12b and the side flushing material 12a. The waterproof tape 14 is disposed on the outdoor side of the side frame attachment piece 5 a of the side frame member 5, the upper frame attachment piece 4 a of the upper frame member 4, and the waterproof protrusion 11 c of the draining member 11. The side portions of the waterproof tape are bent and formed as waterproof pieces 13 on the side surfaces and the upper surface of the upper frame member 4 and attached. Other configurations are the same as those in the above embodiment.

  In this drainage structure, since the flushing material 12 is formed of the waterproof tape 14, it is possible to ensure waterproofness without providing the upper inner periphery sealing 26 and the side inner periphery sealing 27 as in the above embodiment. It is possible to simplify the construction.

  17 to 19 show other embodiments. In this drainage structure, the flushing material 12 is formed integrally with the upper frame member 4 and the side frame member 5. That is, the upper frame member 4 is not formed with the upper frame attachment piece 4 a, and instead, the upper flushing material 12 b is integrally formed of the same material as the upper frame member 4. Further, the side frame attaching piece 5 a is not formed on the side frame member 5, but instead, the side flushing material 12 a is integrally formed of the same material as the side frame member 5. Then, the upper flushing material 12 b and the side flushing material 12 a can be fixed to the wall base 1. Further, the waterproof protrusion 11 c of the draining member 11 is disposed so as to be inserted between the side flushing member 12 a and the vertical structure member 1 b of the wall base 1. Other configurations are the same as those in the above embodiment.

  In this drainage structure, since the flushing material 12 is formed integrally with the upper frame member 4 and the side frame member 5, the upper inner periphery sealing 26 and the side inner periphery sealing 27 are provided as in the above embodiment. Even if it is not provided, waterproofness can be ensured and construction can be simplified.

An example of embodiment of this invention is shown, (a) is a longitudinal cross-sectional view of the upper part, (b) is a cross-sectional view, (c) is a vertical cross-sectional view of the lower part. The construction in progress is shown, wherein (a) is a perspective view and (b) is a cross-sectional view. The construction in progress is shown, wherein (a) is a perspective view and (b) is a cross-sectional view. It is a perspective view which shows the draining member same as the above. The construction in progress is shown, wherein (a) is a perspective view and (b) is a cross-sectional view. The construction in progress is shown, wherein (a) is a perspective view and (b) is a cross-sectional view. It is a perspective view which shows the middle of construction same as the above. It is a perspective view which shows the joinery draining same as the above. It is a perspective view same as the above. An example of other embodiment same as the above is shown, (a) is a perspective view, (b) is a sectional view. It is a perspective view in the middle of construction, showing another embodiment. It is a perspective view in the middle of construction, showing another embodiment. It is a partial cross section figure which shows other embodiment same as the above. It is a perspective view in the middle of construction, showing another embodiment. It is a perspective view in the middle of construction, showing another embodiment. It is a partial cross section figure which shows other embodiment same as the above. It is a perspective view in the middle of construction, showing another embodiment. It is a perspective view in the middle of construction, showing another embodiment. It is a partial cross section figure which shows other embodiment same as the above. It is a front view which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wall base 2 Opening part 3 Joiner 4 Upper frame member 5 Side frame member 6 Upper exterior material 7 Upper drainage channel 8 Side exterior material 9 Side drainage channel 10 Lower exterior material 11 Draining member 12 Flushing material 13 Waterproof piece 14 Waterproof tape

Claims (5)

  A frame-shaped joinery is attached to the inner periphery of the opening of the wall base, and an upper frame member is provided on the upper side of the joinery, and a side frame member is provided on the side of the joinery so as to protrude outward from the opening. An upper drainage is formed between the upper frame member and the upper exterior member by disposing the upper exterior member through a certain gap above, and the side of the side frame member is disposed through the certain gap. By arranging the outer casing material, a side drainage channel is formed in communication with the upper drainage channel between the side frame member and the lateral outer casing material, and a lower outer casing material is provided below the side frame member. A drainage structure around fittings, characterized in that a draining member is provided between the lower end of the side drainage channel and the lower exterior material.   The flushing material is disposed from the upper frame member to the side of the side frame member, and an upper drainage channel and a side drainage channel are formed on the outdoor side of the flushing material. Drainage structure around joinery.   The drainage structure around fittings according to claim 2, wherein waterproof pieces provided on the flushing material are arranged along the side surface of the side frame member.   The drainage structure around joinery according to claim 2 or 3, wherein the flushing material is formed of waterproof tape. The drainage structure around fittings according to claim 2 or 3, wherein the flushing material is formed integrally with the upper frame member and the side frame member.

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