External insulation structure, wall unit and fitting unit

Abstract

To provide an external heat insulating structure having high heat insulating effect in the periphery of a sash.SOLUTION: An external heat insulating structure of a building includes: an external wall 12 formed with an opening 19 penetrating from indoor to outdoor; an extended frame 21 which surrounds the opening 19 and is joined to an exterior surface of the exterior wall 12; a sash 27 which is mounted on the extended frame 21; and a heat insulating material 40 which is stuck to the exterior surface of the exterior wall 12 outside the extended frame 21, and is brought into contact with the extended frame 21. The external heat insulating structure further includes a reinforcement material 25. The opening 19 is opened on the lower end of the exterior wall 12, the extended frame 21 protrudes downward from the lower end of the exterior wall 12, the reinforcement material 25 is joined to the inner surface of the protruded part, the reinforcement material 25 extends in a lateral direction from both sides of the extended frame 21, and the extended part is abutted on the lower end of the exterior wall 12.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an external insulation structure, a wall unit and a fitting unit. [Background technology]

[0002] Patent Document 1 discloses an exterior insulation structure in which insulation is attached to the exterior wall of a building, such as a house, from the outside. According to the description in Patent Document 1, a double-glazed window sash is installed in an opening in the exterior wall so that it fits into the opening, and the double-glazed window sash protrudes from the exterior surface of the exterior wall toward the outdoors. An upper flashing is attached to the exterior surface of the exterior wall above the upper end of the double-glazed window sash and along the upper edge of the opening, and a lower flashing is attached to the exterior surface of the exterior wall below the lower end of the double-glazed window sash and along the lower edge of the opening. A horizontal upper flashing is fixed to the exterior surface of the exterior wall above and spaced apart from the upper flashing, forming a space between the upper flashing and the upper flashing. A horizontal lower flashing is fixed to the exterior surface of the exterior wall below and spaced apart from the lower flashing, forming a space between the lower flashing and the lower flashing. An upper insulating material is installed between the exterior wall and the exterior material above the upper flashing and is in contact with the upper surface of the upper flashing. The lower insulating material is provided between the exterior wall and the exterior material below the lower insulating material, and the insulating material is in contact with the lower surface of the lower insulating material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-072191 Summary of the Invention [Problem to be solved by the invention]

[0004] The technology described in Patent Document 1 has a low insulating effect around the sash. Specifically, because a space is formed between the roofing material and the drip edge, heat moves between the indoor and outdoor spaces through the space.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an external heat insulation structure that has a high heat insulation effect around the sash. [Means for solving the problem]

[0006] The reference numerals in parentheses below refer to FIGS. 1 to 10.

[0007] According to the invention of claim 1, the external insulation structure of a building comprises an exterior wall (12 or 112) having an opening (19 or 119) that penetrates from the inside to the outside, a frame (21 or 121) that surrounds the opening (19 or 119) and is joined to the outer surface of the exterior wall (12 or 112), a sash (27 or 127) that is attached to the frame (21 or 121), and an insulating material (40 or 140) that is attached to the outer surface of the exterior wall (12 or 112) outside the frame (21 or 121) and that is in contact with the frame (21 or 121).

[0008] According to the invention of claim 1 as described above, the sash (27 or 127) is attached to the frame (21 or 121), the insulating material (40 or 140) is attached to the outer surface of the exterior wall (12 or 112) outside the frame (21 or 121), and the insulating material (40 or 140) comes into contact with the frame (21 or 121), so that the insulating effect around the sash (27 or 127) is high.

[0009] According to the invention of claim 2, in the invention of claim 1, the external insulation structure further comprises a reinforcing material (25), the opening (19) opens at the lower end of the outer wall (12), the frame (21) protrudes downward from the lower end of the outer wall (12), the reinforcing material (25) is joined to the inner surface of the protruding portion, and the reinforcing material (25) extends laterally from both sides of the frame (21), and the protruding portions are abutted against the lower end of the outer wall (12).

[0010] According to the invention of claim 2, the reinforcing members (25) support both sides of the opening (19) of the exterior wall (12) from below. Such reinforcing members (25) resist a load that would twist one side of the opening (19) of the exterior wall (12) relative to the other side in the vertical direction of the exterior wall (12), and suppress distortion of the exterior wall (12) and the frame (21). Therefore, the reinforcing members (25) maintain the state in which the insulating member (40) is in contact with the frame (21). Therefore, the reinforcing members (25) contribute to maintaining the insulating effect around the frame (21).

[0011] According to the invention of claim 3, in the invention of claim 2, a horizontal member (60) installed horizontally along the outer periphery of the building has a storage recess (61) on its outer surface, the exterior wall (12) is installed on the horizontal member (60), and the reinforcing member (25) is fitted into the storage recess (61) from above.

[0012] According to the invention of claim 3 as described above, the reinforcing material (25) is fitted into the receiving recess (61) from above, thereby realizing a proper fit of the reinforcing material (25). This stabilizes the reinforcing material (25) and prevents deformation and distortion of the reinforcing material (25). Distortion of the outer wall (12) and the frame (21) is also suppressed, and the insulating material (40) is maintained in contact with the frame (21). Therefore, the insulating effect around the frame (21) is maintained.

[0013] According to the invention of claim 4, in the invention of claim 3, screws are driven into the reinforcing material (25) and the horizontal material (60) from outside.

[0014] According to the invention of claim 4 as described above, the reinforcing member (25) is stably fixed to the horizontal member (60), and deformation and distortion of the reinforcing member (25) are prevented. Distortion of the exterior wall (12) and the frame (21) is also suppressed, and the insulating material (40) is maintained in contact with the frame (21). Therefore, the insulating effect around the frame (21) is maintained.

[0015] According to the invention of claim 5, in the invention of claim 2 or 3, the sash (27) is a French window sash or a back door sash.

[0016] According to the invention of claim 6, in the invention of any one of claims 1 to 4, the raised frame (21 or 121) has a pair of upper and lower horizontal frames (23 or 123) and a pair of horizontal vertical frames (22 or 122) assembled in a rectangular frame shape, and the end faces of the horizontal frames (23 or 123) in the longitudinal direction of the horizontal frames (23 or 123) are abutted against the vertical frames (22 or 122), and the horizontal frames (23 or 123) are joined to the vertical frames (22 or 122).

[0017] According to the invention of claim 6 as described above, even if a load due to gravity or the like acts on the horizontal frame (23 or 123), the horizontal frame (23 or 123) is unlikely to come off the vertical frame (22 or 122).

[0018] According to the invention of claim 7, a transportable wall unit to be erected as the exterior wall (12 or 112) of a building comprises an exterior wall (12 or 112) having an opening (19 or 119) penetrating from the inside to the outside, a frame (21 or 121) surrounding the opening (19 or 119) and joined to the outer surface of the exterior wall (12 or 112), and a sash (27 or 127) attached to the frame (21 or 121), and an insulating material (40 or 140) is attached to the outer surface of the exterior wall (12 or 112) outside the frame (21 or 121), and the insulating material (40 or 140) is in contact with the frame (21 or 121).

[0019] According to the invention of claim 8, a transportable building material unit (20 or 120) attached to an exterior wall (12 or 112) having an opening (19 or 119) penetrating from the inside to the outside comprises a frame (21 or 121) surrounding the opening (19 or 119) and joined to the outer surface of the exterior wall (12 or 112), and a sash (27 or 127) attached to the frame (21 or 121), and an insulating material (40 or 140) is attached to the outer surface of the exterior wall (12 or 112) outside the frame (21 or 121), and the insulating material (40 or 140) is in contact with the frame (21 or 121). [Effects of the Invention]

[0020] According to the present invention, the insulating effect around the sash attached to the frame is high. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 2 is an exploded perspective view of the external heat insulation structure of the first embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the external heat insulation structure of the first embodiment. [Figure 3] FIG. 2 is an exploded perspective view of the external heat insulation structure of the first embodiment. [Figure 4] FIG. 2 is a cross-sectional view of the lower part of the external heat insulation structure of the first embodiment. [Figure 5] FIG. 2 is an exploded perspective view of the wall unit according to the first embodiment. [Figure 6] FIG. 2 is an exploded perspective view of the fitting unit of the first embodiment. [Figure 7] FIG. 10 is a perspective view of an external heat insulation structure according to a second embodiment. [Figure 8] FIG. 10 is a perspective view of an external heat insulation structure according to a second embodiment. [Figure 9] FIG. 10 is an exploded perspective view of a wall unit according to a second embodiment. [Figure 10] FIG. 10 is an exploded perspective view of the fitting unit of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, embodiments will be described with reference to the drawings. Features and technical effects of the embodiments will be understood from the following detailed description and drawings. However, the scope of the present invention is not limited to the embodiments disclosed below. Because the drawings are provided for illustrative purposes only, the scope of the present invention is not limited to the examples in the drawings.

[0023] ===First Embodiment=== <1. External insulation structure> 1 to 3 are exploded perspective views showing the external thermal insulation structure of a wall-type building. Fig. 4 is a cross-sectional view of the lower part of the external thermal insulation structure. The cross section of Fig. 4 is along a vertical plane perpendicular to the horizontal direction. A wall structure refers to a structure in which a building is supported by planar structural elements such as walls and floors. The external thermal insulation structure includes a wall unit 10, a thermal insulation material 40, a waterproof / breathable sheet 50, and an exterior material (not shown). In order to illustrate the components of the external thermal insulation structure, the waterproof / breathable sheet 50 is omitted from FIG. 2, and both the thermal insulation material 40 and the waterproof / breathable sheet 50 are omitted from FIG. 3.

[0024] (1) Wall unit The wall unit 10 comprises an exterior wall 12 and a fitting unit 20 .

[0025] The exterior wall 12 is a structure that resists the vertical load of the building. The exterior wall 12 has an opening 19 that penetrates from the interior to the exterior. The exterior wall 12 is formed in a gate shape so that it surrounds both sides and the top of the opening 19. A fitting unit 20 is attached to the exterior surface of the exterior wall 12. The exterior surface of the exterior wall 12 refers to the surface that faces the outdoors. The lower part of the fitting unit 20 protrudes below the bottom end of the exterior wall 12.

[0026] The fitting units 20 are attached to the exterior wall 12 in a factory or at a construction site. If the attachment is performed in a factory, the assembled wall units 10 are transported from the factory to the construction site. If the attachment is performed at a construction site, the assembled fitting units 20 are transported from the factory to the construction site, and then the fitting units 20 are attached to the exterior wall 12. Whether the attachment is performed in a factory or at a construction site, the insulation material 40, the waterproof / breathable sheet 50, and the exterior material are attached to the wall units 10 at the construction site.

[0027] (1-1) Exterior wall The exterior wall 12 has sleeve wall panels 13 and 14, a hanging wall panel 15, and a frame body 16. The sleeve wall panel 13 is a structure that resists external loads. It is a hollow wooden panel. The sleeve wall panel 13 has a rectangular frame with a pair of vertical stiles and a pair of horizontal stiles, two face panels that are attached to the front and back surfaces of the rectangular frame, respectively, to cover the inside of the rectangular frame, and one or more auxiliary crosspieces assembled vertically, horizontally, or vertically and horizontally inside the rectangular frame. The sleeve wall panel 13 may have a heat insulating material filled inside the rectangular frame. The sleeve wall panel 14 and the hanging wall panel 15 are hollow wooden panels similar to the sleeve wall panel 13.

[0028] The sleeve wall panels 13 and 14 are disposed with a gap therebetween. The upper end of the hanging wall panel 15 is aligned with the upper ends of the sleeve wall panels 13 and 14, and the hanging wall panel 15 is disposed between the upper portions of the sleeve wall panels 13 and 14. Both sides of the hanging wall panel 15 are joined to the sleeve wall panels 13 and 14, respectively.

[0029] The frame body 16 is joined to the inner edges of the sleeve wall panel 13, the hanging wall panel 15, and the sleeve wall panel 14 along their inner edges. The frame body 16 is formed in a gate shape so as to surround both sides and the top of the opening 19.

[0030] (1-2) Door and window unit The fitting unit 20 is a door unit such as a back door unit or a bay window unit.

[0031] The fitting unit 20 has a frame 21 , a reinforcing material 25 , a sash 27 , a waterproof / breathable sheet 29 , a water-stop material 31 and a sealing material 33 .

[0032] · Raised frame The flush frame 21 surrounds the opening 19 in the exterior wall 12 and is joined to the outer surface of the exterior wall 12 with screws or the like. In particular, the flush frame 21 is placed on top of the frame body 16 of the exterior wall 12 in the projection direction and joined to the frame body 16 with screws or the like. The screws or the like are driven into the frame body 16 and the flush frame 21 at an angle to the projection direction, for example, from the inside of the frame body 16. The lower part of the flush frame 21 protrudes below the lower ends of the frame body 16 and the sleeve wall panels 13, 14. Projection refers to depth. The projection direction refers to the direction when the frame body 16 and the flush frame 21 are viewed from the front, that is, the direction perpendicular to the outer surface of the exterior wall 12.

[0033] The raised frame 21 has a pair of vertical stiles 22 and a pair of horizontal stiles 23. The vertical stiles 22 and horizontal stiles 23 are assembled into a rectangular frame to form the raised frame 21. The vertical stiles 22 are spaced apart from each other in the horizontal direction and extend parallel to each other in the up-down direction. The horizontal stiles 23 are spaced apart from each other in the vertical direction and extend parallel to each other in the horizontal direction. The lower horizontal stiles 23 are joined to the vertical stiles 22 while being recessed from each other. Here, "the lower horizontal stiles 23 are recessed from the vertical stiles 22" means that the end faces of the horizontal stiles 23 in the longitudinal direction of the lower horizontal stiles 23 abut against the vertical stiles 22. In this case, the lower horizontal stiles 23 do not have to protrude downward from the lower ends of the vertical stiles 22, and the lower faces of the lower horizontal stiles 23 may be aligned with the lower ends of the vertical stiles 22. In this way, the lower cross frame 23 is joined to the vertical frame 22 while being biased against the vertical frame 22, which contributes to the lower cross frame 23 being less likely to come off the vertical frame 22 due to a downward load such as gravity. Similarly, the upper cross frame 23 is joined to the vertical frame 22 while being biased against the vertical frame 22. The lower cross frame 23 is positioned below the lower ends of the frame body 16 and the sleeve wall panels 13, 14.

[0034] Reinforcement The reinforcing material 25 is made of a square timber. The reinforcing material 25 is fixed to the inner surface of the horizontal frame 23 below the stile 21 with screws or the like. The inner surface of the horizontal frame 23 refers to the surface facing the interior of the building. The size of the reinforcing material 25 in the horizontal direction is longer than the size of the stile 21 in the horizontal direction. The reinforcing material 25 extends laterally from both sides of the stile 21. The lower ends of these extending portions are abutted against the exterior wall 12. These extending portions may be fixed to the lower end of the exterior wall 12 with screws or the like.

[0035] The reinforcement members 25 are positioned at the height of horizontal members 60, which are installed horizontally along the perimeter of the building. The horizontal members 60 are bases or girths. That is, when the exterior wall 12 is installed on the first floor, the horizontal members 60 are bases installed on the foundation. When the exterior wall 12 is installed on the second floor or higher, the horizontal members 60 are girths installed on the exterior wall of the lower floor. The horizontal members 60 have a storage recess 61 on their outer surface. The horizontal length of the storage recess 61 is equal to the horizontal length of the reinforcement members 25. The reinforcement members 25 are fitted into the storage recess 61 and placed on the foundation or the exterior wall of the lower floor. The horizontal members 23, 25, and 60 are fixed together by driving long screws 80 or the like into the lower horizontal members 23, 25, and 60 from outside. The reinforcement members 25 may be joined to the horizontal members 60 with adhesive. The reinforcement members 25 may be joined to the horizontal members 60 with a combination of screws and adhesive. The horizontal member 60 may be joined to the lower end of the exterior wall 12 by adhesive or screws, or both. The horizontal member 60 may be joined to the floor panel 90 by adhesive or screws, or both. In addition, when the horizontal member 60 and the reinforcing member 25 are installed on a foundation, a ventilation base may be provided between the horizontal member 60 and the reinforcing member 25 and the foundation.

[0036] Waterproof and breathable sheet The waterproof and breathable sheet 29 is attached to the outer surfaces of the vertical frames 22 of the frame 21 with fasteners such as staples. The outer surfaces of the vertical frames 22 refer to the surfaces facing the outdoors. The waterproof and breathable sheet 29 extends outward from the side, top, and bottom edges of the vertical frames 22.

[0037] Water-stopping material The waterproof material 31 is attached to the lower stile 23. More specifically, the waterproof material 31 is attached to the outer surface and upper end of the lower stile 23 with fasteners such as staples. The outer surface of the lower stile 23 refers to the surface facing outdoors.

[0038] Sash The sash 27 is a sliding French window sash or a back door sash. The sash 27 has a sash frame and a shoji screen provided inside the sash frame. The shoji screen is, for example, a sliding French window or a hinged door. The sash frame of the sash 27 is partially fitted inside the frame 21 and is overlapped on the outer surface of the frame 21 and fixed to the frame 21. The waterproof / breathable sheet 29 and the water-stopping material 31 are sandwiched between the sash frame of the sash 27 and the frame 21. Note that the shoji screen is omitted from the drawing so that components other than the shoji screen can be shown.

[0039] Sealant The sealing material 33 is attached to the outer peripheral flange of the sash 27. The sealing material 33 protrudes outward from the outer peripheral flange of the sash 27 and is attached to the waterproof / breathable sheet 29 and the frame 21. The sealing material 33 is made of, for example, butyl adhesive tape.

[0040] (2) Insulation material The heat insulating material 40 is made of, for example, rock wool, glass wool, urethane foam, or cellulose fiber. The heat insulating material 40 may be formed in the shape of a panel.

[0041] The insulating material 40 is attached to the outer surface of the exterior wall 12 outside the frame 21. The insulating material 40 may be attached to the exterior wall 12 in any manner. For example, the insulating material 40 may be supported, attached, fixed, or adhered to the exterior wall 12. The insulating material 40 may be in contact with, supported, attached, fixed, or adhered to the frame 21.

[0042] (3) Waterproof and breathable sheet The waterproof / breathable sheet 50 is attached to the heat insulating material 40 so as to cover the heat insulating material 40 from the outdoors.

[0043] (4) Exterior materials The exterior material covers the waterproof / breathable sheet 50 from the outdoors and is fixed to the heat insulating material 40 or the exterior wall 12 via furring strips or the like.

[0044] <2. Manufacturing method for external insulation structure (when fitting units are installed at a factory)> (1) Factory processes As shown in Fig. 5, the following steps (1-1) to (1-8) are carried out in a factory. The steps (1-1) to (1-8) may be carried out in any order. Some of the steps (1-1) to (1-8) may be carried out in parallel.

[0045] (1-1) Creating the exterior wall The sleeve wall panels 13, 14 are arranged with a gap between them. The upper end of the hanging wall panel is aligned with the upper ends of the sleeve wall panels 13, 14, and the hanging wall panel 15 is arranged between the upper parts of the sleeve wall panels 13, 14. Both sides of the hanging wall panel 15 are joined to the sleeve wall panels 13, 14, respectively, using screws, adhesive, or both. The frame body 16 is assembled by aligning it along the inner edges of the sleeve wall panels 13, 15, and 14, and the frame body 16 is joined to the sleeve wall panel 13, 15, and 14 using screws, adhesive, or both.

[0046] (1-2) Creating a frame A pair of vertical frames 22 and a pair of horizontal frames 23 are framed into a rectangular shape using jigs, fixtures, etc. At this time, the upper and lower horizontal frames 23 are bent relative to the left and right vertical frames 22, and the upper and lower horizontal frames 23 are joined to the left and right vertical frames 22.

[0047] (1-3) Applying waterproof and moisture-proof sheets The waterproof and breathable sheets 29 are attached to the outer surfaces of the vertical frames 22 of the frame 21 by fasteners such as staples.

[0048] (1-4) Applying waterproofing material The waterproof material 31 is attached to the outer surface and upper end of the horizontal frame 23 below the frame 21 with fasteners such as staples.

[0049] (1-5) Sash installation The sash 27 is partially fitted inside the frame 21, and the sash 27 is overlapped on the outer surface of the frame 21, thereby sandwiching the waterproof / breathable sheet 29 and the water-stop material 31 between the sash 27 and the frame 21. Thereafter, the sash 27 is fixed to the frame 21 with screws or the like.

[0050] (1-6) Installing the frame The frame 21 is placed against the outer surface of the exterior wall 12 so as to surround the opening 19 of the exterior wall 12, and the lower horizontal frame 23 is positioned below the lower ends of the frame body 16 and the sleeve wall panels 13, 14. Screws are driven obliquely from the inside of the frame body 16 of the exterior wall 12 into the frame body 16 and the frame 21 to fix the frame 21 to the frame body 16 of the exterior wall 12.

[0051] (1-7) Installation of reinforcement The reinforcing material 25 is attached to the inner surface of the horizontal frame 23 below the frame 21. At this time, the reinforcing material 25 is extended laterally from both sides of the frame 21, and the extended portions are attached to the lower ends of the exterior wall 12. Then, the reinforcing material 25 is fixed to the horizontal frame 23 below with screws or the like.

[0052] (1-8) Installing support materials Small pieces of plywood are prepared as support materials 35, 36. The support material 35 is placed against the outer surface of the reinforcing material 25 and the outer surface of the sleeve wall panel 13. The support material 35 is temporarily fastened to the reinforcing material 25 with screws or the like. If necessary, the support material 35 is temporarily fastened to the sleeve wall panel 13 with screws or the like. Similarly, the support material 35 is temporarily fastened to the reinforcing material 25, and if necessary, the support material 35 is temporarily fastened to the sleeve wall panel 14.

[0053] The support materials 35, 36 reinforce the lower portions of the sleeve wall panels 13, 14, and contribute to preventing twisting of the exterior wall 12. In other words, the support materials 35, 36 resist a load that would cause the lower portion of the sleeve wall panel 13 to twist in the vertical direction of the sleeve wall panels 13, 14 relative to the lower portion of the sleeve wall panel 14.

[0054] (2) Transportation The wall units 10 are loaded onto a transport and transported from the factory to the construction site.

[0055] (3) Construction site processes The following steps (3-1) to (3-5) are carried out at the construction site. Steps (3-1) to (3-5) may be carried out in any order. Some of steps (3-1) to (3-5) may be carried out in parallel.

[0056] (3-1) Installation of horizontal members and floor panels A horizontal member 60 is installed on the exterior wall or foundation of the lower floor, and a storage recess 61 is formed in the horizontal member 60. A plurality of floor panels 90 are laid out at the same height as the horizontal member 60, and these floor panels 90 are joined together and joined to the horizontal member 60 with screws 81 or the like.

[0057] (3-2) Installing the wall unit Adhesive is applied to the inner surface of the reinforcing member 25, and also to the lower ends of the sleeve wall panels 13, 14. The wall unit 10 is hoisted using a wall crane or the like. Then, the reinforcing member 25 of the wall unit 10 is fitted into the storage recess 61, and the reinforcing member 25 is placed on the exterior wall or foundation of the lower floor, and the reinforcing member 25 is adhered to the horizontal member 60. At the same time, the sleeve wall panels 13, 14 are placed on the ends of the horizontal member 60 and floor panel 90, and the sleeve wall panels 13, 14 are adhered to the ends of the horizontal member 60 and floor panel 90. The horizontal stile 23 and reinforcing member 25 below the sill 21 are fixed to the horizontal member 60 with long screws 80 or the like.

[0058] After the wall unit 10 is installed, the supports 35, 36 are removed from the stiffener 25 and the sleeve wall panels 13, 14.

[0059] (3-3) Outer insulation The heat insulating material 40 is stuck to the outer surface of the exterior wall 12 outside the frame 21, and the heat insulating material 40 is supported, attached, fixed or bonded to the exterior wall 12.

[0060] (3-4) Applying waterproof and breathable sheets The heat insulating material 40 is covered from the outdoors with a waterproof / breathable sheet 50, and the waterproof / breathable sheet 50 is fixed to the heat insulating material 40 with staples or the like. At this time, the waterproof / breathable sheet 50 is overlapped on the waterproof / breathable sheet 29 that protrudes from the frame 21.

[0061] (3-5) Installation of exterior materials A furring strip or the like is installed, and the waterproof / breathable sheet 50 is covered with an exterior material from the outdoors.

[0062] <3. Manufacturing method for external insulation structure (when fitting units are installed at the construction site)> (1) Factory processes As shown in Fig. 6, the following steps (1-1) to (1-5) are carried out in a factory. The steps (1-1) to (1-5) may be carried out in any order. Some of the steps (1-1) to (1-5) may be carried out in parallel.

[0063] (1-1) Creating a frame A pair of vertical frames 22 and a pair of horizontal frames 23 are framed into a rectangular shape using jigs, fixtures, etc. At this time, the upper and lower horizontal frames 23 are bent relative to the left and right vertical frames 22, and the upper and lower horizontal frames 23 are joined to the left and right vertical frames 22.

[0064] (1-2) Applying waterproof and moisture-proof sheets The waterproof and breathable sheets 29 are attached to the outer surfaces of the vertical frames 22 of the frame 21 by fasteners such as staples.

[0065] (1-3) Applying waterproofing material The waterproof material 31 is attached to the outer surface and upper end of the horizontal frame 23 below the frame 21 with fasteners such as staples.

[0066] (1-4) Sash installation The sash 27 is partially fitted inside the frame 21, and the sash 27 is overlapped on the outer surface of the frame 21, thereby sandwiching the waterproof / breathable sheet 29 and the water-stop material 31 between the sash 27 and the frame 21. Thereafter, the sash 27 is fixed to the frame 21 with screws or the like.

[0067] (1-5) Installing reinforcement The reinforcing material 25 is placed against the inner surface of the horizontal frame 23 below the frame 21. At this time, the reinforcing material 25 extends laterally from both sides of the frame 21. Then, the reinforcing material 25 is fixed to the horizontal frame 23 below with screws, adhesive, or the like.

[0068] (2) Transportation The fitting unit 20 is loaded onto a transporter and transported from the factory to the construction site.

[0069] (3) Construction site processes The following steps (3-1) to (3-6) are carried out at the construction site. Steps (3-1) to (3-6) may be carried out in any order. Some of steps (3-1) to (3-6) may be carried out in parallel.

[0070] (3-1) Installation of horizontal members and floor panels A horizontal member 60 is installed on the exterior wall or foundation of the lower floor, and a storage recess 61 is formed in the horizontal member 60. A plurality of floor panels 90 are laid out at the same height as the horizontal member 60, and these floor panels 90 are joined together and the floor panels 90 are joined to the horizontal member 60.

[0071] (3-2) Creating the exterior walls Adhesive is applied to the lower end of the sleeve wall panel 13. The sleeve wall panel 13 is lifted with a crane or the like, placed on top of the ends of the horizontal members 60 and floor panel 90, and then adhered to the ends of the horizontal members 60 and floor panel 90. The sleeve wall panel 14 is installed in the same manner. Adhesive is applied to the side edges of the hanging wall panel 15. The hanging wall panel 15 is lifted by a crane or the like, and placed between the upper parts of the sleeve wall panels 13, 14, and then adhered to the sleeve wall panels 13, 14. The frame body 16 is assembled along the inner edges of the sleeve wall panel 13, the hanging wall panel 15 and the sleeve wall panel 14, and the frame body 16 is joined to the sleeve wall panel 13, the hanging wall panel 15 and the sleeve wall panel 14 with screws or adhesive or both.

[0072] In the above description, the exterior wall 12 is erected while being assembled. However, the exterior wall 12 may be assembled first and then erected.

[0073] (3-3) Installation of fittings units Adhesive is applied to the inner surface of the reinforcing member 25 of the fitting unit 20. The fitting unit 20 is lifted by hand or with a crane or the like. The reinforcing member 21 of the fitting unit 20 is then placed against the outer surface of the exterior wall 12 so that it surrounds the opening 19 in the exterior wall 12. At this time, the lower cross frame 23 is positioned below the lower ends of the frame body 16 and sleeve wall panels 13, 14 of the exterior wall 12, the reinforcing member 25 is fitted into the storage recess 61, the reinforcing member 25 is placed on the exterior wall or foundation of the lower floor, and the reinforcing member 25 is glued to the horizontal member 60. The lower cross frame 23 and the reinforcing member 25 are fixed to the horizontal member 60 with long screws 80 or the like. Screws are driven diagonally from the inside of the frame body 16 of the exterior wall 12 into the frame body 16 and the reinforcing member 21 to fix the reinforcing member 21 to the frame body 16 of the exterior wall 12.

[0074] (3-4) Outer insulation The heat insulating material 40 is stuck to the outer surface of the exterior wall 12 outside the frame 21, and the heat insulating material 40 is supported, attached, fixed or bonded to the exterior wall 12.

[0075] (3-5) Applying waterproof and breathable sheets The heat insulating material 40 is covered from the outdoors with a waterproof / breathable sheet 50, and the waterproof / breathable sheet 50 is fixed to the heat insulating material 40 with staples or the like. At this time, the waterproof / breathable sheet 50 is overlapped on the waterproof / breathable sheet 29 that protrudes from the frame 21.

[0076] (3-6) Installation of exterior materials A furring strip or the like is installed, and the waterproof / breathable sheet 50 is covered with an exterior material from the outdoors.

[0077] <4. Summary> As described above, the exterior wall 12 has an opening 19 that penetrates from the inside to the outside. The frame 21 surrounds the opening 19 and is joined to the outer surface of the exterior wall 12, and the sash 27 is attached to the frame 21. The insulation material 40 is attached to the outer surface of the exterior wall 12 outside the frame 21. The insulation material 40 contacts the frame 21, and there is no gap between the insulation material 40 and the frame 21. Therefore, the insulation effect around the sash 27 is high.

[0078] The frame 21 projects downward from the lower end of the exterior wall 12, and a reinforcing member 25 is joined to the inner surface of the projecting portion. The reinforcing member 25 extends laterally from both sides of the frame 21, and the extended portions are abutted against the lower end of the exterior wall 12. The sleeve wall panels 13, 14 of the exterior wall 12 are supported by the reinforcing member 25. Such reinforcing member 25 resists a load that would twist the sleeve wall panel 13 relative to the sleeve wall panel 14 in the vertical direction of the exterior wall 12, and suppresses distortion of the exterior wall 12 and the frame 21. Therefore, the reinforcing member 25 keeps the insulation 40 in contact with the frame 21, contributing to maintaining the insulating effect around the frame 21.

[0079] The horizontal member 60 has a storage recess 61 on its outer surface, the exterior wall 12 is installed on top of the horizontal member 60, and the reinforcing member 25 is fitted into the storage recess 61 from above. This allows the reinforcing member 25 to fit snugly. This stabilizes the reinforcing member 25 and prevents deformation and distortion of the reinforcing member 25. Distortion of the exterior wall 12 and the frame 21 is also suppressed, and the insulating material 40 is maintained in contact with the frame 21. Therefore, the insulating effect around the frame 21 is maintained.

[0080] Long screws 80 are driven from the outside into the horizontal frame 23, the reinforcing member 25, and the horizontal member 60. The reinforcing member 25 and the horizontal frame 23 are stably fixed to the horizontal member 60, preventing deformation and distortion of the reinforcing member 25, the exterior wall 12, and the frame 21. This keeps the insulating material 40 in contact with the frame 21, maintaining the insulating effect around the frame 21.

[0081] The horizontal frame 23 of the rising frame 21 is joined to the vertical frame 22 while being biased against the vertical frame 22 of the rising frame 21. Therefore, even if a load due to gravity or the like acts on the horizontal frame 23, the horizontal frame 23 is unlikely to come off the vertical frame 22.

[0082] In recent years, there has been a demand for a carbon-neutral society, which aims to achieve virtually zero carbon dioxide emissions, and for the Sustainable Development Goals (SDGs). In response, the construction industry is also working to build buildings using wood, which produces less carbon dioxide. Because buildings that use external thermal insulation are made of wood, the exterior structure and the building itself can contribute to the promotion of carbon neutrality, the realization of a carbon-neutral society, and the achievement of the Sustainable Development Goals. Because external thermal insulation prevents the release of cold air from air conditioning or warm air from heating outdoors, it contributes to reducing carbon dioxide emissions and energy consumption.

[0083] === Second Embodiment === Fig. 7 is a perspective view of the external thermal insulation structure of the second embodiment. Fig. 8 is a perspective view of the external thermal insulation structure of the second embodiment. Fig. 9 is an exploded perspective view of the wall unit of the second embodiment. Fig. 10 is an exploded perspective view of the fittings unit of the second embodiment. The waterproof / moisture-permeable sheet 150 is not shown in Fig. 8. The reference symbols of corresponding components in the external thermal insulation structure of the second embodiment and the external thermal insulation structure of the first embodiment have the same last two digits.

[0084] The external thermal insulation structure of the second embodiment differs from the external thermal insulation structure of the first embodiment in the following respects: In other respects, the external thermal insulation structure of the second embodiment is provided in the same manner as the external thermal insulation structure of the first embodiment, and is identical to the external thermal insulation structure of the first embodiment.

[0085] In the first embodiment, the fitting unit 20 is a French window unit or a door unit, and the sash 27 is a sliding French window sash or a back door sash. In contrast, in the second embodiment, the fitting unit 120 is a waist-high window unit, and the sash 127 is a waist-high window sash.

[0086] In the first embodiment, the exterior wall 12 surrounds both sides and the top of the opening 19, and the opening 19 is open at the lower end of the exterior wall 12. In contrast, in the second embodiment, the exterior wall 112 surrounds both sides, the top, and the bottom of the opening 119, and the bottom of the opening 119 is closed. In the second embodiment, the exterior wall 112 has a waist wall panel 117 in addition to the sleeve wall panels 113, 114, the hanging wall panel 115, and the frame 116. The waist wall panel 117 is spaced below the hanging wall panel 115 by the opening 119, and the lower end of the waist wall panel 117 is aligned with the lower ends of the sleeve wall panels 113, 114, and the waist wall panel 117 is disposed between the lower parts of the sleeve wall panels 113, 114. Both sides of the waist wall panel 117 are joined to the sleeve wall panels 113, 114, respectively. The frame body 116 is joined along the inner edges of the sleeve wall panel 113, the hanging wall panel 115, the sleeve wall panel 114, and the waist wall panel 117. The frame body 116 is formed into a rectangular frame shape so as to surround both sides, the top, and the bottom of the opening 119. The raised frame 121 is placed on top of the frame body 116 of the exterior wall 112 in the projection direction, and is joined to the frame body 116 with screws or the like. The raised frame 121 does not protrude from the lower end of the exterior wall 112.

[0087] The second embodiment does not employ anything equivalent to the reinforcing member 25 in the first embodiment. In the first embodiment, the horizontal member 60 has an accommodating recess 61, but in the second embodiment, no accommodating recess is formed in the horizontal member. [Explanation of symbols]

[0088] 10,110 Wall unit 12,112 exterior walls 19,119 openings 21,121 Folding frame 22,122 Vertical frame 23,123 horizontal stile 25 Reinforcement 27,127 sashes 40,140 Insulation 60 Horizontal material 61 Storage recess 80 Long Screw

Claims

1. In the external insulation structure of a building, An exterior wall having an opening formed therein that penetrates from the inside to the outside; A frame that surrounds the opening and is joined to the outer surface of the outer wall; a sash attached to the frame; A heat insulating material attached to the outer surface of the exterior wall outside the frame and in contact with the frame; An external insulation structure comprising:

2. The external thermal insulation structure according to claim 1, Further comprising a reinforcing material, The opening is open at the lower end of the outer wall, the frame extends downward from the lower end of the outer wall, the reinforcing material is joined to the inner surface of the extending portion, and the reinforcing material extends laterally from both sides of the frame, and the extending portions are abutted against the lower end of the outer wall. An external insulation structure characterized by:

3. The external thermal insulation structure according to claim 2, A horizontal member installed horizontally along the periphery of the building has a storage recess on its outer surface, the exterior wall is installed on the horizontal member, and the reinforcing member is fitted into the storage recess from above. An external insulation structure characterized by:

4. The external thermal insulation structure according to claim 3, Screws are driven into the reinforcing material and horizontal material from outside. An external insulation structure characterized by:

5. The external thermal insulation structure according to claim 2 or 3, The sash is a bay window sash or a back door sash. An external insulation structure characterized by:

6. The external thermal insulation structure according to any one of claims 1 to 4, The frame has a pair of upper and lower horizontal frames and a pair of horizontal vertical frames assembled into a rectangular frame shape, The end faces of the horizontal stiles in the longitudinal direction thereof are abutted against the vertical stiles, and the horizontal stiles are joined to the vertical stiles. An external insulation structure characterized by:

7. In a transportable wall unit erected as the exterior wall of a building, An exterior wall having an opening formed therein that penetrates from the inside to the outside; A frame that surrounds the opening and is joined to the outer surface of the outer wall; a sash attached to the frame; Equipped with The heat insulating material is attached to the outer surface of the exterior wall outside the frame, and the heat insulating material is in contact with the frame. A wall unit characterized by:

8. A transportable building unit to be attached to an exterior wall having an opening penetrating from the interior to the exterior, A frame that surrounds the opening and is joined to the outer surface of the outer wall; a sash attached to the frame; Equipped with The heat insulating material is attached to the outer surface of the exterior wall outside the frame, and the heat insulating material is in contact with the frame. A fitting unit characterized by:

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