Refitted furniture

Abstract

To provide a refurbishing fitting improved in heat insulation performance by employing a resin sliding screen.SOLUTION: A refurbishing fitting has: an existing frame attached to an opening in a building framework; a new frame attached over four sides of the inner circumference of the existing frame; and at least one resin sliding screen slidably fitted inside the new frame in a left-right direction. At least top and bottom frame members among top, bottom, left and right frame members forming the new frame are each formed by a frame member body containing a metal, and a rail member that covers the frame member body and guides the sliding movement of the sliding screen.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to retrofit fittings. [Background technology]

[0002] Conventionally, when renovating an opening in a building, a new frame is attached to the inner periphery of the existing frame attached to the opening. For example, Patent Document 1 discloses a renovated fitting in which a new insulating frame body is attached to the inner periphery of the existing frame. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-285757 A Summary of the Invention [Problem to be solved by the invention]

[0004] From the perspective of improving the insulating performance of renovated building materials in which a shoji screen is slidably fitted inside a newly installed frame, there is a demand to be able to use a plastic shoji screen to be fitted inside the newly installed frame.

[0005] The present disclosure aims to provide a renovated building material with improved thermal insulation performance by using resin shoji screens. [Means for solving the problem]

[0006] The present disclosure relates to a renovation fixture comprising an existing frame attached to an opening in a building structure, a new frame attached around the four inner periphery of the existing frame, and at least one resin shoji screen placed inside the new frame so that it can slide left and right, wherein at least the upper and lower frame members of the upper, lower, left and right frame members that make up the new frame are composed of a frame member main body containing metal, and a rail member that covers the frame member main body and guides the sliding movement of the shoji screen. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a front view of the remodeled fixture according to the first embodiment, seen from the outside of the room. [Diagram 2] FIG. 2 is a vertical cross-sectional view of the remodeled fixture shown in FIG. 1. [Diagram 3] FIG. 2 is a cross-sectional view of the remodeled fixture shown in FIG. 1. [Figure 4] 3 is an enlarged vertical cross-sectional view showing the upper frame portion of the remodeling fixture shown in FIG. 2. [Diagram 5] FIG. 5 is an enlarged vertical cross-sectional view showing the newly installed upper frame of the remodeled fitting shown in FIG. 4. [Figure 6] 3 is an enlarged vertical cross-sectional view showing the lower frame portion of the remodeling fixture shown in FIG. 2. FIG. [Figure 7] FIG. 7 is an enlarged vertical cross-sectional view showing the newly installed lower frame of the remodeled fitting shown in FIG. 6. [Figure 8] 4 is an enlarged cross-sectional view showing the left vertical frame portion of the remodeled fitting shown in FIG. 3. FIG. [Figure 9] 9 is an enlarged vertical cross-sectional view showing a newly installed vertical frame on the left side of the remodeled fitting shown in FIG. 8. FIG. [Figure 10] 4 is an enlarged cross-sectional view showing the right-hand vertical frame portion of the remodeled fitting shown in FIG. 3. FIG. [Figure 11] 11 is an enlarged vertical cross-sectional view showing a newly installed vertical frame on the right side of the renovated fitting shown in FIG. 10. FIG. [Figure 12] A vertical cross-sectional view showing another embodiment of the existing lower frame. [Figure 13] This is a vertical cross-sectional view of a renovated building fixture with a shoji screen containing three layers of glass. [Figure 14] This is a cross-sectional view of a renovated fixture with a shoji screen containing three layers of glass. [Figure 15] 8 is a vertical cross-sectional view showing an enlarged view of the upper frame portion of the renovated fitting according to the second embodiment. FIG. [Figure 16] 13 is a cross-sectional view showing an enlarged view of the left vertical frame portion of the renovated fitting relating to the second embodiment. FIG. [Figure 17] FIG. 11 is a diagram showing a construction method for renovating fittings in accordance with the second embodiment. [Figure 18]FIG. 11 is a diagram showing a construction method for renovating fittings in accordance with the second embodiment. [Figure 19] FIG. 11 is a diagram showing a construction method for renovating fittings in accordance with the second embodiment. [Figure 20] FIG. 11 is a diagram showing a construction method for renovating fittings in accordance with the second embodiment. [Figure 21] FIG. 11 is a vertical cross-sectional view showing an enlarged view of the upper frame portion of the renovated fitting according to the third embodiment. [Figure 22] FIG. 11 is a vertical cross-sectional view showing an enlarged view of the lower frame portion of a renovated fitting according to a third embodiment. [Diagram 23] FIG. 11 is a vertical cross-sectional view showing an enlarged view of the left vertical frame portion of the renovated fitting relating to the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the drawings. The remodeling fixture 1 according to this embodiment is a remodeling fixture for remodeling in which a new frame 3 is attached to an existing frame 2 in a state where the existing frame 2 is attached to an opening of a building skeleton 100.

[0009] In this specification, the "front direction" refers to the direction along the indoor / outdoor direction of the renovated fitting 1. The "front direction" refers to the direction along the surface direction of the surface material of the renovated fitting 1, and is a direction perpendicular to the front direction. In the drawings, the outside side of the renovated fitting 1 is referred to as "outside X1", and the inside side of the renovated fitting 1 is referred to as "inside X2". The lateral direction when the renovated fitting 1 is viewed from the front is referred to as "left / right". The direction toward the center of the renovated fitting 1 when viewed from the front is referred to as "inward", and the direction away from the center of the renovated fitting 1 is referred to as "outward".

[0010] The remodeling fixture 1 shown in the first embodiment is a remodeling sash of a sliding window type that is fitted into an opening of a wooden building skeleton 100. The remodeling fixture 1 has an existing frame 2, a new frame 3, two resin-made shoji screens 41 and 42, and one screen door 43. The existing frame 2 is attached to the opening of the building skeleton 100 around the four sides, top, bottom, left and right. The new frame 3 is attached to the inner periphery of the existing frame 2 around the four sides, top, bottom, left and right. The shoji screens 41 and 42 and the screen door 43 are fitted inside the new frame 3 so that they can slide left and right. As shown in FIG. 1, a crescent lock 44 is attached to the shoji screen 41 arranged on the indoor side X2. A drain 329 is provided at both left and right ends of the visible surface of the outdoor side X1 of the lower frame part to drain rainwater that has flowed into the lower frame part. In FIG. 1, the screen door 43 is not shown.

[0011] As shown in Figs. 2 and 3, the existing frame 2 is formed by assembling four frame members, an existing upper frame 21, an existing lower frame 22, and a pair of existing vertical frames 23 on the left and right, in a rectangular shape, and is attached to the inside of the opening of the building skeleton 100 before renovation. The existing upper frame 21, the existing lower frame 22, and the pair of existing vertical frames 23 on the left and right are each made of an extruded shape material made of metal such as aluminum or resin such as PVC. A frame member 101 is arranged on the indoor side of the existing frame 2. The frame member 101 is attached to the inner periphery of the opening of the building skeleton 100 around the four sides, top, bottom, left and right, and extends from the end face 2a of the indoor side X2 of the existing frame 2 toward the indoor side. The gap between the four-sided assembled existing frame 2 and the exterior wall material 102 provided on the outdoor side X1 of the building skeleton 100 is sealed around the four sides by a backup material 103 and a sealing material 104.

[0012] 2 and 4, the existing upper frame 21 is disposed above the opening of the building skeleton 100 and fixed at a position offset toward the outside side X1 of the opening. The existing upper frame 21 has a pair of guide rails 211a, 211b for the existing shoji screen, which each protrude downward, and a guide rail 211c for the existing screen door.

[0013] 2 and 5, the existing bottom frame 22 is disposed at the bottom of the opening of the building skeleton 100 and fixed at a position offset toward the outside side X1 of the opening. The existing bottom frame 22 has a pair of guide rails 221a, 221b for an existing shoji screen, which each protrude upward, and a guide rail 221c for an existing screen door. The height of the existing bottom frame 22 is gradually reduced from the guide rail 221a on the innermost side X2 to the guide rail 221c on the outermost side X1.

[0014] As shown in Figs. 3, 6 and 7, the existing vertical frames 23 are arranged on the left and right vertical portions of the opening in the building skeleton 100, and are fixed at positions biased toward the outside side X1 of the opening.

[0015] The new frame 3 of this embodiment is a dedicated frame formed exclusively for the existing frame 2 so as to correspond to the shape of the existing frame 2. As shown in Figs. 2 and 3, the new frame 3 is attached to the inner periphery side extending from the existing frame 2 to the frame member 101 in a state in which four frame members, a new upper frame 31, a new lower frame 32, and a pair of new vertical frames 33 on the left and right, are assembled in a rectangular shape. In detail, the new frame 3 is arranged on the inner periphery side of the existing frame 2 and the frame member 101 by pulling it into the inner periphery X2 after being extended from the indoor side X2 of the opening of the building skeleton 100 to the outdoor side X1 in a state in which the four sides are assembled. The new frame 3 arranged on the inner periphery side of the existing frame 2 and the frame member 101 is fixed to the building skeleton 100 on the indoor side X2 from the existing frame 2 by screws SC1, SC2, and SC3 as fixing members.

[0016] Next, the configurations of the new upper frame 31, the new lower frame 32, and the pair of new vertical frames 33 on the left and right of the new frame 3 will be explained individually.

[0017] First, the newly installed upper frame 31 will be described.

[0018] The new upper frame 31 extends in the left-right direction along the length of the existing upper frame 21. The new upper frame 31 has a length in the projection direction extending from the guide rail 211c of the existing upper frame 21 to the vicinity of the center of the projection direction of the frame member 101. The new upper frame 31 is composed of a frame member main body 31A and a resin rail member 31B. The rail member 31B covers the lower side of the frame member main body 31A, and the upper frame members 41B1, 42B1 of the shoji screens 41, 42 described later are arranged to straddle the rail member 31B (outdoor guide rail portion 3101, indoor guide rail portion 3103) and sandwich the rail member 31B (outdoor guide rail portion 3101, indoor guide rail portion 3103) from the indoor / outdoor direction, thereby guiding the sliding movement of the shoji screens 41, 42.

[0019] As shown in Figures 4 and 5, the frame member main body 31A is divided into two in the front direction, an outdoor frame member 311 and an indoor frame member 312. The outdoor frame member 311 and the indoor frame member 312 are both metal frame members, and are each made of an extruded shape extruded in the length direction from a metal material such as aluminum. The outdoor frame member 311 and the indoor frame member 312 are integrally connected by a connecting member 313. The connecting member 313 is made of a material having thermal insulation properties such as resin, and blocks the transfer of heat from the outdoor frame member 311 to the indoor frame member 312 in the frame member main body 31A.

[0020] The frame member body 31A is integral with a pair of guide rails 314a, 314b corresponding to the two shoji screens 41, 42 to be placed inside the newly-installed frame 3, and a guide rail 314c for the screen door 43 to be placed on the outermost side X1 of the newly-installed frame 3. The guide rails 314b and 314c are disposed in the exterior frame member 311 and protrude downward. The guide rail 314a is disposed adjacent to the connecting member 313 in the interior frame member 312 and protrudes downward. The guide rails 314a, 314b and 314c extend over the entire length of the frame member body 31A in the longitudinal direction.

[0021] The outdoor frame member 311 has a hollow portion 3111 having a substantially rectangular cross section that extends from a portion where the guide rail 314b is disposed to the connecting member 313. The indoor frame member 312 has a hollow portion 3121 having a substantially rectangular cross section that extends from the connecting member 313 toward the indoor side X2. An upper surface 311a of the outdoor frame member 311 corresponding to the hollow portion 3111 and an upper surface 312a of the indoor frame member 312 corresponding to the hollow portion 3121 are both flat surfaces and are arranged flush with each other in the forward direction of the frame member main body 31A. The connecting member 313 does not protrude above these upper surfaces 311a, 312a.

[0022] The outdoor frame member 311 has an outdoor extension 3112 integrally therewith, which extends toward the outdoor side X1 at a position lower than the upper surface 311a of the outdoor frame member 311. The outdoor extension 3112 is disposed at the end of the new upper frame 31 on the outdoor side X1. Specifically, the outdoor extension 3112 is disposed between the guide rails 314b and 314c. The outdoor extension 3112 also functions as a drainage groove that drains rainwater that has infiltrated onto the new upper frame 31 in the left-right direction without allowing it to flow into the indoor side X2.

[0023] An outdoor wall portion 315 extending upward in the find direction is integrally provided at the outermost X1 portion of the outdoor extension portion 3112. The outdoor wall portion 315 protrudes further upward than the upper surfaces 311a, 312a of the outdoor frame member 311 and the indoor frame member 312, and is arranged so as to overlap the outdoor side surface 211d of the guide rail 211c at the outermost X1 of the existing upper frame 21 from the outdoor side X1. A decorative material 316 made of a metal material such as aluminum is attached to the outdoor wall portion 315 so as to be detachable from the outdoor side X1. The decorative material 316 covers the outdoor wall portion 315 and extends upward in the find direction beyond the existing upper frame 21, forming the find surface of the new upper frame 31. The decorative material 316 covers and conceals the visible surface of the existing upper frame 21 on the outside side X1 and the sealing material 104 exposed between the existing upper frame 21 and the exterior wall material 102 from the outside side X1.

[0024] An elastic fin member 317 is provided on the portion of the upper surface 311a of the outdoor frame member 311 facing the outdoor side X1. The fin member 317 protrudes upward from the upper surface 311a of the outdoor frame member 311 so as to be close to the guide rail 211b of the existing upper frame 21. Even if rainwater infiltrates into the new upper frame 31 between the outdoor side wall portion 315 and the guide rail 211c of the existing upper frame 21, the rainwater flows in the left-right direction through the outdoor side extension portion 3112 and is drained to the outer periphery side of the new vertical frame 33, and infiltration into the indoor side X2 is suppressed. Even if a large amount of rainwater infiltrates into the outdoor side extension portion 3112, the fin member 317 prevents the rainwater from infiltrating into the indoor side X2. Since the fin member 317 is elastic, even if the newly installed upper frame 31 comes into contact with the existing upper frame 21 etc. when being positioned on the inner periphery of the existing upper frame 21, it can bend elastically and there is no risk of damage.

[0025] An attachment portion 318 for fixing the new upper frame 31 to the building skeleton 100 is integrally provided at the portion of the frame member main body 31A closest to the indoor side X2. The attachment portion 318 is disposed parallel to the upper surfaces 311a, 312a of the outdoor side frame member 311 and the indoor side frame member 312, and extends in a plate shape from an upper portion of the end surface 312b of the indoor side X2 of the indoor side frame member 312 toward the indoor side X2.

[0026] At least a pair of protrusions 3181 extending in the length direction of the new upper frame 31 are provided on the upper surface 318a of the mounting portion 318. The pair of protrusions 3181 protrude slightly upward from the upper surface 318a of the mounting portion 318 and are arranged in parallel at a predetermined interval in the forward direction. The position of the upper surface 318a of the mounting portion 318 is arranged slightly below the positions of the upper surfaces 311a, 312a of the outdoor frame member 311 and the indoor frame member 312. The pair of protrusions 3181 protrude from the upper surface 318a of the mounting portion 318 to a height approximately equal to the positions of the upper surfaces 311a, 312a of the outdoor frame member 311 and the indoor frame member 312.

[0027] The rail member 31B is attached to the frame member main body 31A over the entire length of the frame member main body 31A so as to cover the lower surface of the frame member main body 31A, specifically, from the lower surface 311b of the outdoor frame member 311 to the lower surface 312c of the indoor frame member 312. The rail member 31B of this embodiment is divided into two resin rail members 31B1 and 31B2 corresponding to the pair of guide rails 314a and 314b of the frame member main body 31A, respectively.

[0028] 5, the rail member 31B1 arranged on the outdoor side X1 is attached to the underside 311b of the outdoor side frame member 311 of the frame member main body 31A. The rail member 31B1 has an outdoor side guide rail portion 3101 and an outdoor side cover portion 3102 extending integrally from the outdoor side guide rail portion 3101 toward the indoor side X2.

[0029] The outdoor guide rail portion 3101 has a rail width sufficiently larger in the front direction than the guide rail 314b, and protrudes downward than the guide rail 314b. In detail, the outdoor guide rail portion 3101 has an outdoor rail wall portion 3101a, an indoor rail wall portion 3101b, and an end wall portion 3101c that connects the lower ends of the outdoor rail wall portion 3101a and the indoor rail wall portion 3101b in the front direction. The length of the outdoor rail wall portion 3101a in the front direction is shorter than the length of the indoor rail wall portion 3101b in the front direction.

[0030] The outdoor rail wall 3101a is disposed parallel to the guide rail 314b and protrudes further downward from the lower end of the guide rail 314b. An outdoor engagement part 3101d formed in a hook shape toward the outdoor side X1 is provided at the upper end of the outdoor rail wall 3101a. The outdoor engagement part 3101d engages from the indoor side X2 with an engagement protrusion 314b2 provided at the lower end of the guide rail 314b so as to protrude toward the indoor side X2. The outdoor rail wall 3101a is disposed flush with the side surface of the outdoor side X1 of the guide rail 314b so as to extend the guide rail 314b downward.

[0031] The indoor rail wall 3101b is disposed slightly away from the guide rail 314b on the indoor side X2 and parallel to the guide rail 314b and the outdoor rail wall 3101a. A protruding portion 3101e protruding toward the outdoor side X1 is integrally provided at the upper end of the indoor rail wall 3101b. The protruding portion 3101e is disposed parallel to the lower surface 311b of the outdoor frame member 311 and abuts or is close to the lower surface 311b. The tip of the protruding portion 3101e on the outdoor side X1 is fitted from the indoor side X2 into an engagement groove 314b1 provided on the indoor side X2 of the base portion of the guide rail 314b. The lower end of the indoor rail wall 3101b is disposed at the same position as the lower end of the outdoor rail wall 3101a.

[0032] The end wall portion 3101c is disposed slightly above the lower ends of the outdoor rail wall portion 3101a and the indoor rail wall portion 3101b. As a result, a groove portion 3101f surrounded by the end wall portion 3101c and the lower ends of the outdoor rail wall portion 3101a and the indoor rail wall portion 3101b is formed on the underside of the end wall portion 3101c along the length direction of the outdoor guide rail portion 3101. The groove portion 3101f is sealed by fitting a sealant 3101g made of resin, rubber, or the like.

[0033] The outdoor cover part 3102 is formed in a hollow shape with a substantially rectangular cross section, and extends from the upper end of the indoor rail wall part 3101b to the indoor side X2 across the guide rail 314a. The outdoor cover part 3102 substantially shields the space between the indoor rail wall part 3101b and the guide rail 314a. The outdoor cover part 3102 abuts or is closer to the lower surface 311b of the outdoor frame member 311 and the lower surface of the connecting member 313 on the indoor side X2 than the guide rail 314b. An indoor side engaging part 3102a protruding toward the indoor side X2 is provided on the upper part of the end surface of the indoor side X2 of the outdoor cover part 3102. The indoor side engaging part 3102a engages with an engaging groove 314a1 provided on the outdoor side X1 of the base part of the guide rail 314a from the outdoor side X1. The outdoor cover portion 3102 prevents the outside air temperature transmitted from the existing upper frame 21 to the new upper frame 31 from being transmitted to the inner periphery between the guide rails 314a, 314b of the new upper frame 31.

[0034] The rail member 31B2 arranged on the indoor side X2 is attached to the underside 312c of the indoor side frame member 312 of the frame member main body 31A. The rail member 31B2 has an indoor side guide rail portion 3103 and an indoor side cover portion 3104 extending integrally from the indoor side guide rail portion 3103 toward the indoor side X2. The indoor side guide rail portion 3103 protrudes downward from the frame member main body 31A at the same protruding height as the outdoor side guide rail portion 3101.

[0035] The indoor guide rail portion 3103 has the same rail width in the front direction as the outdoor guide rail portion 3101, and protrudes downward from the guide rail 314a at the same protruding height as the outdoor guide rail portion 3101. In detail, the indoor guide rail portion 3103 has an outdoor rail wall portion 3103a, an indoor rail wall portion 3103b, and an end wall portion 3103c that connects the lower ends of the outdoor rail wall portion 3103a and the indoor rail wall portion 3103b in the front direction. The length of the outdoor rail wall portion 3103a in the front direction is shorter than the length of the indoor rail wall portion 3103b in the front direction.

[0036] The outdoor rail wall 3103a is disposed parallel to the guide rail 314a and protrudes further downward from the lower end of the guide rail 314a. An outdoor engagement part 3103d formed in a hook shape toward the outdoor side X1 is provided at the upper end of the outdoor rail wall 3103a. The outdoor engagement part 3103d engages from the indoor side X2 with an engagement protrusion 314a2 provided at the lower end of the guide rail 314a so as to protrude toward the indoor side X2. The outdoor rail wall 3103a is disposed flush with the side surface of the outdoor side X1 of the guide rail 314a so as to extend the guide rail 314a downward.

[0037] The indoor rail wall 3103b is disposed slightly away from the guide rail 314a on the indoor side X2 and parallel to the guide rail 314a and the outdoor rail wall 3103a. A protruding portion 3103e protruding toward the outdoor side X1 is integrally provided at the upper end of the indoor rail wall 3103b. The protruding portion 3103e is disposed parallel to the lower surface 312c of the indoor frame member 312 and abuts or is close to the lower surface 312c. The tip of the protruding portion 3103e on the outdoor side X1 is fitted from the indoor side X2 into an engagement groove 314a1 provided on the indoor side X2 of the base portion of the guide rail 314a. The lower end of the indoor rail wall 3103b is disposed at the same position as the lower end of the outdoor rail wall 3103a.

[0038] The end wall portion 3103c is disposed slightly above the lower ends of the outdoor rail wall portion 3103a and the indoor rail wall portion 3103b. As a result, a groove portion 3103f similar to the groove portion 3101f of the outdoor guide rail portion 3101 is formed on the underside of the end wall portion 3103c along the length direction of the indoor guide rail portion 3103. The groove portion 3103f is sealed by fitting a sealant 3103g made of resin, rubber, or the like.

[0039] The indoor side cover part 3104 extends from near the upper end of the indoor side rail wall part 3103b toward the indoor side X2. The indoor side cover part 3104 is spaced downward from the lower surface 312c of the indoor side frame member 312, and substantially shields the lower surface 312c of the indoor side frame member 312 on the indoor side X2 more than the indoor side rail wall part 3103b. An indoor side engagement part 3104a formed in a hook shape toward the indoor side X2 is provided at the end of the indoor side cover part 3104 on the indoor side X2. The indoor side engagement part 3104a engages with the lower end of the protruding piece 312d extending downward from the end surface 312b of the indoor side X2 of the indoor side frame member 312 from the outdoor side X1. The indoor side cover part 3104 suppresses the outside air temperature transmitted from the existing upper frame 21 side to the new upper frame 31 from being transmitted to the inner periphery side of the indoor side X2 beyond the guide rail 314a of the new upper frame 31. An angle member 319 described later is integrally provided at the end of the indoor side X2 of the indoor side cover part 3104.

[0040] The new upper frame 31 of the new frame 3 in the state of being assembled on all four sides into a rectangle is disposed on the inner periphery side of the portion extending from the existing upper frame 21 to the frame member 101. The exterior frame member 311 of the new upper frame 31 is disposed below the existing upper frame 21. The interior frame member 312 of the new upper frame 31 is disposed below the frame member 101. As shown in FIG. 4, when a gap is formed between the new upper frame 31 and the frame member 101, the spacer member 301 is disposed so as to fill the gap. The spacer member 301 is constituted by one or more sheets. The thickness of the sheet constituting the spacer member 301 and the number of sheets laminated are appropriately set according to the size of the gap between the interior frame member 312 of the new upper frame 31 and the frame member 101. The upper surface 312a, the mounting portion 318, and the connecting member 313 of the interior frame member 312 abut against and overlap the spacer member 301. The new upper frame 31 is fixed to the building skeleton 100 on the indoor side X2 closer to the existing upper frame 21 than the existing upper frame 21, by a screw SC1 that penetrates the mounting portion 318 and the spacer member 301 from the indoor side X2. The screw SC1 penetrates between a pair of protrusions 3181 of the mounting portion 318. The pair of protrusions 3181 abut against the spacer member 301, suppressing deformation of the mounting portion 318 when the fastening torque of the screw SC1 is applied.

[0041] When the new frame 3 is attached to the inner periphery of the existing frame 2, there is no member for attaching the new upper frame 31 between the existing upper frame 21 and the new upper frame 31. The new upper frame 31 is arranged so as to directly face the inner periphery of the existing upper frame 21 from above and below. Therefore, the new upper frame 31 can be arranged as close as possible to the existing upper frame 21. Since the new upper frame 31 is not fixed to the existing upper frame 21, even if the existing upper frame 21 is distorted, the new upper frame 31 can be attached without being affected by the state of the distortion. Since the screw SC1 does not contact the existing upper frame 21, heat is not transferred between the existing upper frame 21 and the indoor frame member 312 of the new upper frame 31 via the screw SC1.

[0042] A resin angle member 319 is attached to the indoor side frame member 312 of the new upper frame 31. As shown in FIG. 5, the angle member 319 has an angle portion 319a extending toward the indoor side X2 and a standing wall portion 319b extending upward from the end of the outdoor side X1 of the angle portion 319a. The standing wall portion 319b is integrally connected to the end of the indoor side X2 of the indoor side cover portion 3104, and is arranged so as to extend the end face 312b and the protruding piece 312d downwardly in continuity with the end face 312b and the protruding piece 312d of the indoor side X2 of the indoor side frame member 312. The angle portion 319a extends from the lower end of the standing wall portion 319b toward the indoor side X2 and covers the mounting portion 318 from below. The angle portion 319a is arranged at a position approximately equal to the positions of the lower ends of the outdoor side guide rail portion 3101 and the indoor side guide rail portion 3103. The angle member 319 may be provided separately from the indoor side cover part 3104 at a portion corresponding to the protruding piece 312d.

[0043] Next, the new lower frame 32 will be described.

[0044] The new lower frame 32 extends in the left-right direction along the length of the existing lower frame 22. The new lower frame 32 has a length in the projection direction from the guide rail 211c of the existing lower frame 22 to the vicinity of the center of the projection direction of the frame member 101. The new lower frame 32 is composed of a frame member main body 32A and a resin rail member 32B. The rail member 32B covers the upper side of the frame member main body 32A, and guides the sliding movement of the shoji screens 41 and 42 by being arranged such that the lower frame members 41B2 and 42B2 of the shoji screens 41 and 42 described later straddle the rail member 32B (the outdoor guide rail portion 3201 and the indoor guide rail portion 3203) and sandwich the rail member 32B (the outdoor guide rail portion 3201 and the indoor guide rail portion 3203) from the indoor and outdoor directions.

[0045] The frame member main body 32A is divided into two in the front direction, an outdoor frame member 321 and an indoor frame member 322. The outdoor frame member 321 and the indoor frame member 322 are both metal frame members, and are each made of an extruded shape extruded in the length direction from a metal material such as aluminum. The outdoor frame member 321 and the indoor frame member 322 are integrally connected by a connecting member 323. The connecting member 323 is made of a material having thermal insulation properties such as resin, and blocks the transfer of heat from the outdoor frame member 321 to the indoor frame member 322 in the newly installed lower frame 32.

[0046] The frame member main body 32A has guide rails 324a, 324b, 324c that protrude upward corresponding to the guide rails 314a, 314b, 314c of the newly installed upper frame 31. The guide rail 324a on the innermost side X2 is disposed adjacent to the connecting member 323 at the outermost side X1 on the upper surface 322a of the indoor frame member 322. The guide rail 324b is disposed near the center in the forward direction on the upper surface 321a of the outdoor frame member 321. The guide rail 324c is disposed at the outermost side X1 on the upper surface 321a of the outdoor frame member 321.

[0047] 6 and 7, the outdoor frame member 321 has a hollow portion 3211 bulging downward to fit the shape of the existing lower frame 22. The indoor frame member 322 has a hollow portion 3221 with a generally rectangular cross section extending from the connecting member 323 toward the indoor side X2. A step portion 3222 recessed upward is formed in a portion of the underside 322c of the indoor frame member 322 facing the outdoor side X1.

[0048] As shown in FIG. 6, a height adjustment member 325 is attached to the part of the outside X1 of the new lower frame 32. The height adjustment member 325 extends downward from the new lower frame 32 and is placed on the upper surface 22a between the guide rails 221b, 221c of the existing lower frame 22. The height of the outside X1 of the new lower frame 32 is adjusted by adjusting the height adjustment member 325. A decorative material 326 made of a metal material such as aluminum is attached to the side surface of the outside X1 of the new lower frame 32 so as to be detachable from the outside X1. The decorative material 326 covers the height adjustment member 325 and extends downward in the visible direction beyond the existing lower frame 22 to form the visible surface of the new lower frame 32. The decorative material 326 covers and hides the visible surface of the outside X1 of the existing lower frame 22 and the sealing material 104 exposed between the existing lower frame 22 and the exterior wall material 102 from the outside X1.

[0049] An attachment portion 327 for fixing the new lower frame 32 to the building skeleton 100 is integrally provided at the portion of the new lower frame 32 closest to the indoor side X2. The attachment portion 327 extends in a plate shape from a lower portion of the end face 322b of the indoor side frame member 322 on the indoor side X2 toward the indoor side X2.

[0050] At least a pair of protrusions 3271 extending in the longitudinal direction of the new lower frame 32 are provided on the lower surface 327a of the mounting portion 327. The pair of protrusions 3271 protrude slightly downward from the lower surface 327a of the mounting portion 327 and are arranged in parallel at a predetermined interval in the projection direction.

[0051] The rail member 32B is attached to the frame member main body 32A over the entire length of the frame member main body 32A so as to cover the upper surface of the frame member main body 32A, specifically, the upper surface 321a of the outdoor frame member 321 to the upper surface 322a of the indoor frame member 322. The rail member 32B of this embodiment is divided into two resin rail members 32B1 and 32B2 corresponding to the pair of guide rails 324a and 324b of the frame member main body 32A, respectively.

[0052] 7, the rail member 32B1 arranged on the outdoor side X1 is attached to an upper surface 321a of the outdoor side frame member 321 of the frame member main body 32A. The rail member 32B1 has an outdoor side guide rail portion 3201 and an outdoor side cover portion 3202 extending integrally from the outdoor side guide rail portion 3201 toward the indoor side X2.

[0053] The outdoor guide rail portion 3201 has a rail width sufficiently larger than that of the guide rail 324b in the projection direction, and protrudes upward from the guide rail 324b. In detail, the outdoor guide rail portion 3201 has an outdoor rail wall portion 3201a, an indoor rail wall portion 3201b, an upper end wall portion 3201c that connects the upper ends of the outdoor rail wall portion 3201a and the indoor rail wall portion 3201b in the projection direction, and a lower end wall portion 3201d that connects the lower ends of the outdoor rail wall portion 3201a and the indoor rail wall portion 3201b in the projection direction, and is formed in a vertically elongated hollow shape with a substantially rectangular cross section.

[0054] The outdoor rail wall 3201a is disposed parallel to the guide rail 324b, abuts against the guide rail 324b from the indoor side X2, and the lower end wall 3201d abuts against the upper surface 321a of the outdoor frame member 321 and is placed on the upper surface 321a. An outdoor engagement part 3201e is provided on the side surface of the outdoor rail wall 3201a on the outdoor side X1, which engages with an engagement protrusion 324b1 provided on the upper end of the guide rail 324b so as to protrude toward the indoor side X2 from the indoor side X2 and accommodates the entire guide rail 324b from the indoor side X2. A part of the outdoor rail wall 3201a protruding above the guide rail 324b is disposed flush with the side surface of the outdoor side X1 of the guide rail 314b so as to extend the guide rail 314b upward.

[0055] The upper end wall 3201c is disposed slightly below the positions of the upper ends of the outdoor rail wall 3201a and the indoor rail wall 3201b. As a result, a groove 3201f surrounded by the upper end wall 3201c and the upper ends of the outdoor rail wall 3201a and the indoor rail wall 3201b is formed on the upper surface side of the upper end wall 3201c along the length direction of the outdoor guide rail part 3201. A guide rail part 3201g made of a metal material such as aluminum is fitted and attached to the groove 3201f.

[0056] The outdoor cover part 3202 extends from near the lower end of the indoor rail wall part 3201b over the guide rail 324a toward the indoor side X2. The outdoor cover part 3202 is spaced above the upper surface 321a of the outdoor frame member 321 and substantially shields the outdoor frame member 321 and the connecting member 323 on the indoor side X2 beyond the indoor rail wall part 3201b. An indoor engaging part 3202b formed in a hook shape protrudes from the lower surface 3202a of the outdoor cover part 3202 toward the indoor side X2. The indoor engaging part 3202b engages with an engaging groove 321c formed at the end of the indoor side X2 of the upper surface 321a of the outdoor frame member 321 from the outdoor side X1. The outdoor cover portion 3202 prevents the outside air temperature transmitted from the existing lower frame 22 side to the new lower frame 32 from being transmitted to the inner periphery of the guide rail 324b of the new lower frame 32 on the indoor side X2.

[0057] As shown in Fig. 6, a resin inter-rail cover 3205 is attached to the upper surface of the outdoor cover part 3202. The inter-rail cover 3205 is disposed across the outdoor guide rail part 3201 and the indoor guide rail part 3203 so as to further shield the outdoor cover part 3202. In detail, as shown in Fig. 7, an edge part on the outdoor side X1 of the inter-rail cover 3205 engages with an engagement protrusion 3201b1 protruding from the indoor side rail wall part 3201b of the outdoor guide rail part 3201 toward the indoor side X2, and an edge part on the indoor side X2 of the inter-rail cover 3205 engages with an engagement protrusion 324a2 protruding from the guide rail 324a of the indoor side X2 toward the outdoor side X1, thereby being attached. The rail-to-rail cover 3205 further prevents the outside air temperature transmitted from the existing lower frame 22 to the newly installed lower frame 32 from being transmitted to the inner circumference between the outdoor side guide rail portion 3201 and the indoor side guide rail portion 3203 of the newly installed lower frame 32, thereby improving the insulation performance of the newly installed lower frame 32.

[0058] The rail member 32B2 arranged on the indoor side X2 is attached to an upper surface 322a of the indoor side frame member 322 of the frame member main body 32A. The rail member 32B2 has an indoor side guide rail portion 3203 and an indoor side cover portion 3204 extending integrally from the indoor side guide rail portion 3203 toward the indoor side X2. The indoor side guide rail portion 3203 protrudes upward from the frame member main body 31A at the same protruding height as the outdoor side guide rail portion 3201.

[0059] The indoor guide rail portion 3203 has the same rail width in the projection direction as the outdoor guide rail portion 3201. In detail, the indoor guide rail portion 3203 has an outdoor rail wall portion 3203a, an indoor rail wall portion 3203b, an upper end wall portion 3203c that connects upper ends of the outdoor rail wall portion 3203a and the indoor rail wall portion 3203b in the projection direction, and a lower end wall portion 3203d that connects lower ends of the outdoor rail wall portion 3203a and the indoor rail wall portion 3203b in the projection direction, and is formed in a vertically elongated hollow shape with a substantially rectangular cross section.

[0060] The outdoor rail wall 3203a is disposed parallel to the guide rail 324a, abuts against the guide rail 324a from the indoor side X2, and the lower end wall 3203d abuts against the upper surface 322a of the indoor frame member 322 and is placed on the upper surface 322a. An engagement groove 3203e is provided on the side surface of the outdoor rail wall 3203a on the outdoor side X1, which engages with an engagement protrusion 324a1 provided on the upper end of the guide rail 324a so as to protrude toward the indoor side X2 from the indoor side X2 and accommodates the entire guide rail 324a from the indoor side X2. A portion of the outdoor rail wall 3203a protruding above the guide rail 324a is disposed flush with the side surface of the outdoor side X1 of the guide rail 324a so as to extend the guide rail 314a upward.

[0061] The upper end wall 3203c is disposed slightly below the upper ends of the outdoor rail wall 3203a and the indoor rail wall 3203b. As a result, a groove 3203f surrounded by the upper end wall 3203c and the upper ends of the outdoor rail wall 3203a and the indoor rail wall 3203b is formed on the upper end surface of the outdoor rail wall 3203a along the length direction of the indoor guide rail part 3203. A guide rail part 3203g made of a metal material such as aluminum is fitted and attached in the groove 3203f.

[0062] The indoor side cover part 3204 extends from the lower end of the indoor side rail wall part 3203b toward the indoor side X2. The indoor side cover part 3204 is spaced above the upper surface 322a of the indoor side frame member 322, and substantially shields the upper surface 322a of the indoor side frame member 322 on the indoor side X2 more than the indoor side rail wall part 3203b. An indoor side engagement part 3204a is provided at the lower part of the end part of the indoor side X2 of the indoor side cover part 3204. The indoor side engagement part 3204a engages from the outdoor side X1 with an engagement protrusion part 322d1 provided at the base part of the protruding piece 322d extending upward from the end surface 322b of the indoor side X2 of the indoor side frame member 322, protruding toward the outdoor side X1. The indoor side cover part 3204 suppresses the outside air temperature transmitted from the existing lower frame 22 side to the new lower frame 32 from being transmitted to the inner periphery side of the indoor side X2 beyond the guide rail 314a of the new lower frame 32. An angle member 328 described later is integrally provided on the end part of the indoor side X2 of the indoor side cover part 3204.

[0063] As shown in Fig. 6, a resin cover material 3206 is attached to the upper surface of the indoor-side cover portion 3204. The cover material 3206 is disposed across the indoor-side guide rail portion 3203 and an angle member 328 described below so as to further shield the indoor-side cover portion 3204. In detail, as shown in Fig. 7, an edge portion on the outdoor side X1 of the cover material 3206 engages with an engagement protrusion 3203b1 protruding toward the indoor side X2 from the indoor-side rail wall portion 3203b of the indoor-side guide rail portion 3203, and an edge portion on the indoor side X2 of the cover material 3206 engages with an engagement protrusion 328b1 protruding toward the outdoor side X1 from the vertical wall portion 328b of the angle member 328, thereby being attached. The cover material 3206 further prevents the outside air temperature transmitted from the existing lower frame 22 to the newly installed lower frame 32 from being transmitted to the inner circumference of the indoor side X2 beyond the indoor side guide rail portion 3203 of the newly installed lower frame 32, thereby improving the insulation performance of the newly installed lower frame 32.

[0064] In the new frame 3 assembled on all four sides in a rectangular shape, the new lower frame 32 is disposed on the inner periphery of the portion extending from the existing lower frame 22 to the frame member 101. The exterior frame member 321 of the new lower frame 32 is disposed above the existing lower frame 22. The interior frame member 322 of the new lower frame 32 is disposed above the frame member 101. The new lower frame 32 is fixed to the building skeleton 100 on the interior side X2 of the existing lower frame 22 by a screw SC2 penetrating the mounting portion 327 from the interior side X2. The screw SC2 penetrates between a pair of protrusions 3271 of the mounting portion 327. The pair of protrusions 3271 abut against the frame member 101 and suppress deformation of the mounting portion 327 when the fastening torque of the screw SC2 is applied.

[0065] As shown in FIG. 6, the spacer member 302 and the support plate 3021 are attached from below into the step 3222 of the indoor side frame member 322 of the new lower frame 32 with the screw 302a, filling the gap with the frame member 101. The spacer member 302 is composed of one or more sheets. The thickness of the sheets constituting the spacer member 302 and the number of layers of the sheets are appropriately set according to the vertical depth of the step 3222 and the size of the gap between the indoor side frame member 322 of the new lower frame 32 and the frame member 101. The support plate 3021 is made of a plate material such as metal, fiber reinforced resin such as CFRP, PEEK resin, etc., and extends from the indoor side frame member 322 to the outdoor side frame member 321 through the lower part of the connecting member 323. An end portion on the outdoor side X1 of the support plate 3021 abuts against a lower surface 321b of a portion of the outdoor frame member 321 adjacent to the connecting member 323, and supports the outdoor frame member 321 from below.

[0066] When the new frame 3 is attached to the inner periphery of the existing frame 2, there is no member for attaching the new lower frame 32 between the existing lower frame 22 and the new lower frame 32. The new lower frame 32 is arranged so as to directly face the inner periphery of the existing lower frame 22 from above and below. Therefore, the new lower frame 32 can be arranged as close as possible to the existing lower frame 22. Since the new lower frame 32 is not fixed to the existing lower frame 22, even if the existing lower frame 22 is distorted, it can be attached without being affected by the state of the distortion. Since the screw SC2 does not contact the existing lower frame 22, heat is not transferred between the existing lower frame 22 and the indoor frame member 322 of the new lower frame 32 via the screw SC2.

[0067] A resin angle member 328 is attached to the indoor side frame member 322 of the new lower frame 32. As shown in FIG. 7, the angle member 328 has an angle portion 328a extending toward the indoor side X2 and a vertical wall portion 328b extending downward from the end of the angle portion 328a on the outdoor side X1. The vertical wall portion 328b is integrally connected to the end of the indoor side X2 of the indoor side cover portion 3204, and is arranged so as to extend the end face 322b and the protruding piece 322d upward in continuity with the end face 322b and the protruding piece 322d on the indoor side X2 of the indoor side frame member 322. The angle portion 328a extends from the upper end of the vertical wall portion 328b toward the indoor side X2 and covers the mounting portion 327 from above. The angle portion 328a of the angle member 328 is disposed at a position substantially equal to the positions of the upper ends of the outdoor side guide rail portion 3201 and the indoor side guide rail portion 3203. The angle member 328 may be provided separately from the indoor side cover portion 3204 at a portion corresponding to the protruding piece 322d.

[0068] Next, the new vertical frames 33 will be described. The left and right new vertical frames 33 have substantially the same structure except that they are symmetrical. Therefore, the parts of the left and right new vertical frames 33 that are common to each other will be described in common by using the same reference numerals.

[0069] The new vertical frame 33 extends vertically along the length of the existing vertical frame 23. The new vertical frame 33 has a length in the projection direction from the end of the existing vertical frame 23 on the exterior side X1 to the vicinity of the center of the frame member 101 in the projection direction. The new vertical frame 33 is composed of a frame member main body 33A and a resin rail member 33B. The rail member 33B covers the inner side of the frame member main body 33A, and the vertical frame members 41B3, 42B3 of the shoji screens 41, 42 described later are arranged to straddle the rail member 33B (the exterior guide rail portion 3301, the interior guide rail portion 3302) and sandwich the rail member 33B (the exterior guide rail portion 3301, the interior guide rail portion 3302) from the indoor / outdoor direction, thereby guiding the sliding movement of the shoji screens 41, 42.

[0070] The frame member main body 33A is divided into two in the front direction, an outdoor frame member 331 and an indoor frame member 332. The outdoor frame member 331 and the indoor frame member 332 are both metal frame members, and are each made of extruded shapes extruded in the length direction from a metal material such as aluminum. The outdoor frame member 331 and the indoor frame member 332 are connected together by a connecting member 333. The connecting member 333 is made of a material having thermal insulation properties such as resin, and blocks the transfer of heat from the outdoor frame member 331 to the indoor frame member 332 in the newly installed vertical frame 33.

[0071] The position of the connecting member 333 in the new vertical frame 33 in the forward direction coincides with the positions of the connecting members 313, 323 in the new upper frame 31 and the new lower frame 32 in the forward direction. The upper and lower ends of the connecting member 333 are arranged in contact with or in close proximity to the left and right ends of the connecting members 313, 323 of the new upper frame 31 and the new lower frame 32. The connecting members 313, 323, 333 are substantially continuous around the four periphery of the new frame 3.

[0072] As shown in Figs. 8 to 11, the outdoor frame member 331 has a hollow portion 3311 having a substantially rectangular cross section. The indoor frame member 332 has a hollow portion 3321 having a substantially rectangular cross section. The outer side surface 331a of the outdoor frame member 331 corresponding to the hollow portion 3311 and the outer side surface 332a of the indoor frame member 332 corresponding to the hollow portion 3321 are both flat surfaces and are arranged flush with each other in the projection direction of the newly installed vertical frame 33. The connecting member 333 does not protrude outward from these outer sides 331a and 332a. The inner side surface 331b of the outdoor frame member 331 corresponding to the hollow portion 3311 and the inner side surface 332b of the indoor frame member 332 corresponding to the hollow portion 3321 are both flat surfaces and are arranged flush with each other in the projection direction of the newly installed vertical frame 33. The connecting member 333 does not protrude inward from these inner sides 331b and 332b.

[0073] An outdoor wall portion 334 extending outward in the find direction is integrally provided at the outermost X1 portion of the outdoor frame member 331. The outdoor wall portion 334 protrudes outward in the find direction further than the outer surfaces 331a, 332a of the outdoor frame member 331 and the indoor frame member 332, and is disposed so as to overlap the outermost X1 end face 23a of the existing vertical frame 23 from the outdoor side X1. A decorative material 335 made of a metal material such as aluminum is attached to the outdoor wall portion 334 so as to be detachable from the outdoor side X1. The decorative material 335 covers the outdoor wall portion 334 and extends outward in the find direction further than the existing vertical frame 23, forming the find surface of the new vertical frame 33. The decorative material 335 covers and conceals the visible surface of the existing vertical frame 23 on the outside side X1 and the sealing material 104 exposed between the existing vertical frame 23 and the exterior wall material 102 from the outside side X1.

[0074] An attachment portion 336 used to fix the new vertical frame 33 to the building skeleton 100 is integrally provided at the portion closest to the indoor side X2 of the new vertical frame 33. The attachment portion 336 extends in a plate shape from an end face 332c of the indoor side X2 of the indoor side frame member 332 toward the indoor side X2. The attachment portion 336 is disposed parallel to the outer sides 331a, 332a of the outdoor side frame member 331 and the indoor side frame member 332.

[0075] At least a pair of protrusions 3361 extending in the length direction of the new vertical frame 33 are provided on the outer surface 336a of the mounting portion 336. The pair of protrusions 3361 protrude slightly outward from the outer surface 336a of the mounting portion 336 and are arranged in parallel at a predetermined interval in the forward direction. The position of the outer surface 336a of the mounting portion 336 is arranged slightly inside the positions of the outer surfaces 331a, 332a of the outdoor frame member 331 and the indoor frame member 332. The pair of protrusions 3361 protrude from the outer surface 336a of the mounting portion 336 to a height approximately equal to the positions of the outer surfaces 331a, 332a of the outdoor frame member 331 and the indoor frame member 332.

[0076] At least one fin-shaped water-shielding member 337 is provided on the outer side surface 331a of the outdoor frame member 331 of the new vertical frame 33. The water-shielding member 337 extends over the entire length of the new vertical frame 33 in the longitudinal direction. The water-shielding member 337 protrudes from the outer side surface 331a of the outdoor frame member 331 toward the inner side surface 23b of the existing vertical frame 23. The tip of the water-shielding member 337 abuts against the inner side surface 23b of the existing vertical frame 23. Therefore, the water-shielding member 337 is disposed so as to prevent rainwater from flowing in the indoor / outdoor direction between the existing vertical frame 23 and the new vertical frame 33. The position of the water-shielding member 337 in the projection direction of the new vertical frame 33 is disposed at a position slightly on the indoor side X2 of the outdoor extension portion 3112 of the new upper frame 31, or at the same position as the position of the fin member 317 of the new upper frame 31. As a result, rainwater that flows down between the existing vertical frame 23 and the new vertical frame 33 from both longitudinal ends of the exterior extension part 3112 of the new upper frame 31 is efficiently drained onto the existing lower frame 22 along the exterior side X1 surface of the water-blocking member 337. Therefore, by providing this water-blocking member 337 between the existing vertical frame 23 and the new vertical frame 33, rainwater flowing down from the new upper frame 31 is prevented from infiltrating into the interior side X2. Rainwater that has flowed onto the existing lower frame 22 is drained to the exterior side X1 from notches (not shown) provided on both the left and right sides of the rail member 32B1 on the outermost side X1.

[0077] The waterproof member 337 is formed of an elastic member such as soft resin or rubber. The waterproof member 337 may be formed of a hard member such as hard resin or metal. When the waterproof member 337 is made of an elastic member, the tip of the waterproof member 337 elastically abuts against the inner surface 23b of the existing vertical frame 23, sealing the gap between the existing vertical frame 23 and the new vertical frame 33. Therefore, the waterproof member 337 is highly effective in preventing rainwater from infiltrating into the room side X2. The waterproof member 337 made of an elastic member can bend elastically even if it comes into contact with the existing vertical frame 23 or the like when the new vertical frame 33 is arranged on the inner periphery side of the existing vertical frame 23, and is not likely to be damaged.

[0078] The rail member 33B is attached to the frame member main body 33A over the entire longitudinal length of the frame member main body 33A so as to cover the inner surface of the frame member main body 33A, specifically, from the inner surface 331b of the outdoor frame member 331 to the inner surface 332b of the indoor frame member 332.

[0079] 9 and 11, the rail member 33B covers almost the entire area of ​​the frame member main body 33A in the front direction, from the inner side surface 331b of the outdoor frame member 331 of the frame member main body 33A to the inner side surface 332b of the indoor frame member 332. The rail member 33B has an outdoor guide rail portion 3301, an indoor guide rail portion 3302, and a cover portion 3303 that integrally connects these guide rail portions 3301, 3302 in the front direction.

[0080] The outdoor side guide rail section 3301 and the indoor side guide rail section 3302 are arranged at the same position in the forward direction as the outdoor side guide rail sections 3101, 3201 and the indoor side guide rail sections 3103, 3203 provided on the newly installed upper frame 31 and the newly installed lower frame 32, respectively, and have the same rail width in the forward direction as the outdoor side guide rail sections 3101, 3201 and the indoor side guide rail sections 3103, 3203.

[0081] The outdoor guide rail portion 3301 has an outdoor rail wall portion 3301a, an indoor rail wall portion 3301b, and an inner end wall portion 3301c that connects the inner ends of the outdoor rail wall portion 3301a and the indoor rail wall portion 3301b in the forward direction. The outdoor guide rail portion 3301 is formed in a horizontally elongated hollow shape with a substantially rectangular cross section that protrudes inward from the inner side surface 3303b of the cover portion 3303. The inner end wall portion 3301c is disposed slightly outward from the positions of the inner ends of the outdoor rail wall portion 3301a and the indoor rail wall portion 3301b. As a result, a groove portion 3301d surrounded by the inner end wall portion 3301c and the inner ends of the outdoor rail wall portion 3301a and the indoor rail wall portion 3301b is formed on the inner side of the inner end wall portion 3301c along the length direction of the outdoor guide rail portion 3301.

[0082] The indoor guide rail portion 3302 has an outdoor rail wall portion 3302a, an indoor rail wall portion 3302b, and an inner end wall portion 3302c that connects the inner ends of the outdoor rail wall portion 3302a and the indoor rail wall portion 3302b in the forward direction. The indoor guide rail portion 3302 is formed in a horizontally elongated hollow shape with a substantially rectangular cross section that protrudes inward from the inner side surface 3303b of the cover portion 3303 in parallel with the outdoor guide rail portion 3301. The inner end wall portion 3302c is positioned slightly outward from the positions of the inner ends of the outdoor rail wall portion 3302a and the indoor rail wall portion 3302b. As a result, a groove portion 3302d surrounded by the inner end wall portion 3302c and the inner ends of the outdoor side rail wall portion 3302a and the indoor side rail wall portion 3302b is formed on the inner surface side of the indoor side guide rail portion 3302 along the longitudinal direction of the indoor side guide rail portion 3302.

[0083] The cover portion 3303 has a hollow shape of a substantially rectangular shape long in the projection direction, and integrally connects the outdoor side guide rail portion 3301 and the indoor side guide rail portion 3302 on the outer side of the outdoor side guide rail portion 3301 and the indoor side guide rail portion 3302. The outer side surface 3303a of the cover portion 3303 is a flat surface. The outer side surface 3303a of the cover portion 3303 abuts from a midway portion in the projection direction of the inner side surface 331b of the outdoor side frame member 331 of the frame member main body 33A to a midway portion in the projection direction of the inner side surface 332b of the indoor side frame member 332 via the connecting member 333. The outdoor side guide rail portion 3301 is disposed at the end of the outdoor side X1 of the inner side surface 3303b of the cover portion 3303, and the indoor side guide rail portion 3302 is disposed at the end of the indoor side X2 of the inner side surface 3303b of the cover portion 3303.

[0084] An outdoor extension part 3303c is integrally formed with the cover part 3303, with the outdoor side surface 3303a extending in parallel toward the outdoor side X1. The outdoor extension part 3303c abuts against the inner side surface 331b of the outdoor frame member 331. The end part of the rail member 33B on the outdoor side X1 is attached to the outdoor frame member 311 of the frame member main body 33A by a screw 3303d penetrating the outdoor extension part 3303c. An outdoor engagement groove 3303e that receives and engages with the outdoor engagement protrusion 331c protruding from the inner side surface 331b of the outdoor frame member 331 is formed near the base part of the outdoor extension part 3303c on the outer side surface 3303a of the cover part 3303.

[0085] The cover portion 3303 is integrally formed with an indoor extension portion 3303f, the inner side surface 3303b of which extends in parallel toward the indoor side X2. The indoor extension portion 3303f is spaced apart from the inner side surface 332b of the indoor frame member 332 and covers the end portion of the inner side X2 of the inner side surface 332b. The end portion of the indoor side X2 of the indoor extension portion 3303f is bent toward the inner side surface 332b of the indoor frame member 332 along the protruding piece 322d extending inward from the end face 322b of the indoor side X2 of the indoor frame member 332, and a folded portion 3303g extending toward the outdoor side X1 along the inner side surface 332b is integrally formed. The folded portion 3303g is formed with an indoor engagement groove 3303h that receives and engages the inner end of the protruding piece 322d. An end portion on the outside side X1 of the folded-back portion 3303g engages from the inside side X2 with an inside engaging protrusion 332e protruding from the inner surface 332b of the inside frame member 332. The cover portion 3303 suppresses the outside air temperature transmitted from the existing vertical frame 23 side to the new vertical frame 33 from being transmitted to the inner periphery side between the outside guide rail portion 3301 and the inside guide rail portion 3302 of the new vertical frame 33. An angle member 338 described later is integrally provided on the end portion on the inside side X2 of the cover portion 3303.

[0086] As shown in Fig. 8, a resin inter-rail cover 3304 is attached to the inner surface 3303b of the cover portion 3303 of the newly installed vertical frame 33 on the right side as viewed from the outside X1. The inter-rail cover 3304 is arranged across the outside guide rail portion 3301 and the inside guide rail portion 3302 so as to further shield the cover portion 3303. In detail, the outside X1 edge portion of the inter-rail cover 3304 engages with an engagement protrusion 3301b1 protruding toward the inside X2 from the inside rail wall portion 3301b of the outside guide rail portion 3301, and the inside X2 edge portion of the inter-rail cover 3304 engages with an engagement protrusion 3302a1 protruding toward the outside X1 from the outside rail wall portion 3302a of the inside guide rail portion 3302, thereby being attached. The rail-space cover 3304 further suppresses the outside air temperature transmitted from the existing vertical frame 23 side to the new vertical frame 33 from being transmitted to the inner periphery side between the outdoor side guide rail portion 3301 and the indoor side guide rail portion 3302 of the new vertical frame 33, improving the thermal insulation performance of the new vertical frame 33. Although not shown, a similar rail-space cover 3304 may also be provided on the inner surface 3303b of the cover portion 3303 of the new vertical frame 33 on the left side when viewed from the outdoor side X1.

[0087] A pair of left and right new vertical frames 33 in the new frame 3 assembled in a rectangular four-sided state are arranged on the inner periphery side of the portion extending from the existing vertical frame 23 to the frame member 101. The exterior frame member 331 of the new vertical frame 33 is arranged inside the existing vertical frame 23. As shown in Figs. 8 and 10, when a gap is formed between the new vertical frame 33 and the frame member 101, a spacer member 303 is arranged to fill the gap. The spacer member 303 is composed of one or more sheets. The thickness of the sheet constituting the spacer member 303 and the number of sheets stacked are appropriately set according to the size of the gap between the interior frame member 332 of the new vertical frame 33 and the frame member 101. The exterior surface 332a and the mounting portion 336 of the interior frame member 332 abut against and overlap the spacer member 303. The connecting member 333 is arranged inside the spacer member 303. The new vertical frame 33 is fixed to the building skeleton 100 on the indoor side X2 closer to the existing vertical frame 23 than the existing vertical frame 23, by a screw SC3 that penetrates the mounting portion 336 and the spacer member 303 from the indoor side X2. The screw SC3 penetrates between a pair of protrusions 3361 of the mounting portion 336. The pair of protrusions 3361 abut against the spacer member 303, suppressing deformation of the mounting portion 336 when the fastening torque of the screw SC3 is applied.

[0088] When the new frame 3 is attached to the inner periphery of the existing frame 2, there is no member for attaching the new vertical frame 33 between the existing vertical frame 23 and the new vertical frame 33. The new vertical frame 33 is arranged so as to directly face the inner periphery of the existing vertical frame 23 on the left and right. Therefore, the new vertical frame 33 can be arranged as close as possible to the existing vertical frame 23. Since the new vertical frame 33 is not fixed to the existing vertical frame 23, even if the existing vertical frame 23 is distorted, the new vertical frame 33 can be attached without being affected by the state of the distortion. Since the screw SC3 does not contact the existing vertical frame 23, heat is not transferred between the existing vertical frame 23 and the indoor frame member 332 of the new vertical frame 33 via the screw SC3.

[0089] A resin angle member 338 is attached to the indoor side frame member 332 of the new vertical frame 33. The angle member 338 has an angle portion 338a extending toward the indoor side X2 and a vertical wall portion 338b extending outward from the end of the outdoor side X1 of the angle portion 338a. The vertical wall portion 338b is arranged so as to extend the end face 332c and the protruding piece 332d of the indoor side X2 of the indoor side frame member 332 inwardly. The angle portion 338a extends from the inner end of the vertical wall portion 338b toward the indoor side X2 and covers the mounting portion 336 from the inside. The position of the angle portion 338a in the forward direction corresponds to the position of the angle portions 319a, 328a of the angle members 319, 328 of the new upper frame 31 and the new lower frame 32 in the forward direction. The position of the angle portion 338a in the view direction is disposed at a position substantially equal to the positions of the inner ends of the exterior guide rail portion 3301 and the interior guide rail portion 3203 in the view direction. The angle member 338 may be provided separately from the cover portion 3303 at a portion corresponding to the protruding piece 332d.

[0090] As shown in Figs. 4, 6, 8 and 10, airtight tapes T1 and T2 made of resin or metal such as aluminum are attached to the interior side X2 of the new frame 3 fixed by the screws SC1, SC2 and SC3. The airtight tape T1 is attached to the frame member 101. The end of the airtight tape T1 on the exterior side X1 is attached to the surface 2b of the exterior side X1 of the wall portion protruding from the frame member 101 to the interior side X2 of the existing frame 2. The end of the airtight tape T1 on the interior side X2 extends beyond the existing upper frame 21, the existing lower frame 22 and the existing vertical frame 23 to the exterior side X2. The end of the airtight tape T2 on the exterior side X1 covers the mounting portions 318, 327 and 336 and the heads of the screws SC1, SC2 and SC3. An end portion of the airtight tape T2 on the indoor side X2 extends toward the indoor side X2 beyond the mounting portions 318, 327, 336 and overlaps the airtight tape T1. This improves the airtightness between the existing frame 2 and the new frame 3.

[0091] After being fixed to the building skeleton 100, the new frame 3 has decorative covers 51, 52, and 53 made of resin provided around the four periphery on the interior side X2. The decorative covers 51, 52, and 53 are attached to the angle members 319, 328, and 338 with screws 51a, 52a, and 53a. The decorative cover 51 of the new upper frame 31 continues from the angle portion 319a of the angle member 319 and extends toward the interior side X2, and is arranged over the frame member 101. The decorative cover 52 of the new lower frame 32 continues from the angle portion 328a of the angle member 328 and extends toward the interior side X2, and is arranged over the frame member 101. The decorative cover 53 of the new vertical frame 33 continues from the angle portion 338a of the angle member 338 and extends toward the interior side X2, and is arranged over the frame member 101.

[0092] As shown in Figures 4, 6, 8 and 10, the decorative covers 51, 52, 53 integrally include hollow sections 510, 520, 530 having a rectangular cross-section and arranged on the indoor side X2 of the angle sections 319a, 328a, 338a flush with the angle sections 319a, 328a, 338a, indoor side cover walls 511, 521, 531 extending from the ends of the side surfaces 510a, 520a, 530a on the indoor side X2 of the hollow sections 510, 520, 530 toward the frame member 101, and fixing sections 512, 522, 532 fixed to the angle members 319, 328, 338. The side surfaces 510a, 520a, 530a of the hollow portions 510, 520, 530 and the interior cover walls 511, 521, 531 form the interior side X2 facing surfaces of the decorative covers 51, 52, 53.

[0093] A plurality of cutout grooves 511a, 521a, 531a are formed in the interior cover walls 511, 521, 531. The cutout grooves 511a, 521a, 531a are formed along the roots of a plurality of protrusions extending in parallel along the length direction of the decorative covers 51, 52, 53. The plurality of cutout grooves 511a, 521a, 531a are provided in parallel at a predetermined interval in the sight direction. That is, the cutout grooves 511a, 521a of the decorative covers 51, 52 of the new upper frame 31 and the new lower frame 32 are arranged in parallel at an interval in the vertical direction. The cutout grooves 531a of the decorative cover 53 of the new vertical frame 33 are arranged in parallel at an interval in the left-right direction. The interior cover walls 511, 521, 531 can be easily cut by sliding the blade of a cutter along any of the cut grooves 511a, 521a, 531a or by folding by hand. Therefore, depending on the distance between the angle parts 319a, 328a, 338a of the angle members 319, 328, 338 and the frame member 101, a worker can easily adjust the height of the interior cover walls 511, 521, 531 from the frame member 101 by cutting the interior cover walls 511, 521, 531 at any of the cut grooves 511a, 521a, 531a on site.

[0094] The fixing portions 512, 522, 532 of the decorative covers 51, 52, 53 are composed of fixing portion main bodies 512a, 522a, 532a extending from the hollow portions 510, 520, 530 toward the outside side X1, abutment plate portions 512b, 522b, 532b provided at the ends of the fixing portion main bodies 512a, 522a, 532a on the outside side X1 so as to extend in the viewing direction, and a pair of screw insertion plate portions 512c, 522c, 532c protruding from the fixing portion main bodies 512a, 522a, 532a toward the back surfaces of the angle portions 319a, 328a, 338a. The abutment plate portions 512b, 522b, 532b of the fixing portions 512, 522, 532 abut against the vertical wall portions 319b, 328b, 338b of the angle members 319, 328, 338 from the room side X2, and determine the positions of the decorative covers 51, 52, 53 in the forward direction. The screws 51a, 52a, 53a penetrate the angle portions 319a, 328a, 338a, pass between the pair of screw insertion plate portions 512c, 522c, 532c, and are screwed into the fixing portion main bodies 512a, 522a, 532a. When the screws 51a, 52a, 53a are tightened, the abutment plate portions 512b, 522b, 532b and the screw insertion plate portions 512c, 522c, 532c abut against the rear surfaces of the angle portions 319a, 328a, 338a, defining the viewing direction positions of the decorative covers 51, 52, 53. Therefore, the decorative covers 51, 52, 53 are fixed in the proper positions relative to the angle members 319, 328, 338 without being displaced.

[0095] The decorative covers 51, 52, 53 fixed to the angle members 319, 328, 338 cover the new upper frame 31, the new lower frame 32, the new vertical frame 33, and the spacer members 301, 303 between the angle members 319, 328, 338 and the frame member 101 from the room side X2. The heads of the screws SC1, SC2, SC3 are arranged inside the decorative covers 51, 52, 53. The boundary between the decorative covers 51, 52, 53 and the frame member 101 is shielded all around by the L-shaped cross-section trim members 61, 62, 63 fixed to the frame member 101 by the screws 61a, 62a, 63a. The upper and lower end portions of the trim members 61, 62 are arranged in contact with or in close proximity to the upper and lower end portions of the vertical trim member 63. The boundary between the trim material 61 and the trim material 63 and the boundary between the trim material 62 and the trim material 63 are each concealed by a corner piece 64.

[0096] The heat insulating materials 501, 502, 503 are provided around the inside of the decorative covers 51, 52, 53. The heat insulating materials 501, 502, 503 are made of materials that can provide heat insulating effects, such as extruded polystyrene foam, beaded polystyrene, resin materials such as urethane resin, rubber, or vacuum insulation materials. The heat insulating materials 501, 502, 503 may be made of different materials. The heat insulating materials 501, 502, 503 are accommodated over the entire length of the new upper frame 31, the new lower frame 32, and the new vertical frame 33. Both ends of each of the heat insulating materials 501, 502, 503 are arranged in contact with or close to both ends of the other heat insulating materials 501, 502, 503 adjacent to each other in the circumferential direction. This allows the newly installed frame 3 of the remodeled fitting 1 to be compactly configured in the viewing direction, while still further suppressing the transfer of heat between the outside X1 and the inside X2 of the newly installed frame 3. This improves the insulation performance of the remodeled fitting 1.

[0097] Next, the screens 41 and 42 will be described.

[0098] The screens 41, 42 and the screen door 43 are fitted inside the new frame 3 attached to the inner periphery of the existing frame 2 so that they can slide left and right. The screens 41, 42 are made of resin. In detail, as shown in Fig. 2 and Fig. 3, the screens 41, 42 are made of metal frame bodies 41A, 42A, which are made of hollow extrusions with rectangular cross sections made of metal material such as aluminum, assembled into a rectangular frame around the four sides, resin frame members 41B, 42B that cover the outside side X1, the inside side X2, and the outer periphery of the metal frame bodies 41A, 42A around the four sides, and surface materials 410, 420, such as glass, that are fitted inside the metal frame bodies 41A, 42A and the resin frame members 41B, 42B.

[0099] The upper frame members 41B1, 42B1 of the resin frame members 41B, 42B are provided so as to protrude upward from the metal frame bodies 41A, 42A, and sandwich from the indoor and outdoor directions the indoor-side guide rail portion 3103 and the outdoor-side guide rail portion 3101 protruding downward from the newly installed upper frame 31. As shown in Fig. 4, the upper end surfaces of the upper frame members 41B1, 42B1 are provided with fin-shaped sealing members 401 that seal the gap by elastically abutting against the indoor-side guide rail portion 3103 and the outdoor-side guide rail portion 3101 from the indoor and outdoor directions.

[0100] As shown in Fig. 4, the upper frame members 41B1, 42B1 sandwich the face materials 410, 420 in the indoor / outdoor direction between the upper frame members 41B1, 42B1 and the ridges 41B11, 42B11 attached to the upper frame members 41B1, 42B1. The ridges 41B11, 42B11 have fin members 41B12, 42B12 made of a soft material that elastically contacts the indoor side X2 surface of the face materials 410, 420. Gaskets 41B13, 42B13 made of rubber or resin material are provided between the upper frame members 41B1, 42B1 and the outdoor side X1 surface of the face materials 410, 420. The gaskets 41B13, 42B13 are attached to the upper frame members 41B1, 42B1 to prevent damage to the surface materials 410, 420 and ensure airtightness and watertightness between the upper frame members 41B1, 42B1 and the surface materials 410, 420.

[0101] The lower frame members 41B2, 42B2 of the resin frame members 41B, 42B are provided so as to protrude downward from the metal frame main bodies 41A, 42A, and sandwich the indoor guide rail portion 3203 and the outdoor guide rail portion 3201 protruding upward from the newly installed lower frame 32 from the indoor and outdoor directions. As shown in Fig. 6, the lower end surfaces of the lower frame members 41B2, 42B2 are provided with fin-shaped sealing members 402 that seal the gap by elastically abutting against the indoor guide rail portion 3203 and the outdoor guide rail portion 3201 from the indoor and outdoor directions. The door rollers 4101, 4201 provided inside the lower frame members 41B2, 42B2 are placed on the guide rail parts 3203g, 3201g of the indoor guide rail portion 3203 and the outdoor guide rail portion 3201 so as to be rollable.

[0102] As shown in Fig. 6, the lower frame members 41B2, 42B2 sandwich the face materials 410, 420 in the indoor / outdoor direction between the lower frame members 41B2, 42B2 and the ridges 41B21, 42B21 attached to the lower frame members 41B2, 42B2. The ridges 41B21, 42B21 have fin members 41B22, 42B22 made of a soft material that elastically contacts the indoor side X2 surface of the face materials 410, 420. Gaskets 41B23, 42B23 made of rubber or resin material are provided between the lower frame members 41B2, 42B2 and the outdoor side X1 surface of the face materials 410, 420. The gaskets 41B23, 42B23 are attached to the lower frame members 41B2, 42B2 to prevent damage to the surface materials 410, 420 and ensure airtightness and watertightness between the lower frame members 41B2, 42B2 and the surface materials 410, 420.

[0103] As shown in Fig. 3 and Fig. 10, the vertical frame member 41B3 on the door end side of the resin frame member 41B is provided so as to protrude outward from the metal frame body 41A, and when the shoji screen 41 is in a fully closed state, it sandwiches the indoor guide rail part 3302 protruding inward from the newly installed vertical frame 33 arranged on the door end side of the shoji screen 41 from the indoor / outdoor direction. The outer end surface of the vertical frame member 41B3 is provided with a fin-shaped sealing member 413 that seals the gap by elastically abutting against the indoor guide rail part 3302 from the indoor / outdoor direction. As shown in Fig. 3, the vertical frame member 41B4 on the door end side of the resin frame member 41B is provided so as to protrude outward from the metal frame body 41A.

[0104] As shown in Fig. 3 and Fig. 8, the vertical frame member 42B3 on the door end side of the resin frame member 42B is provided so as to protrude outward from the metal frame body 42A, and when the shoji screen 42 is in a fully closed state, the outdoor guide rail portion 3301 protruding inward from the newly installed vertical frame 33 arranged on the door end side of the shoji screen 42 is sandwiched from the indoor / outdoor direction. The outer end surface of the vertical frame member 42B3 is provided with a fin-shaped sealing member 403 that seals the gap by elastically abutting against the outdoor guide rail portion 3301 from the indoor / outdoor direction. As shown in Fig. 3, the vertical frame member 42B4 on the door end side of the resin frame member 42B is provided so as to protrude outward from the metal frame body 42A. When the shoji screens 41 and 42 are in a fully closed state, the vertical frame member 41B4 of the shoji screen 41 and the vertical frame member 42B4 of the shoji screen 42 are arranged so as to overlap in the forward direction.

[0105] 8 and 10, the vertical frame members 41B3, 42B3 sandwich the face materials 410, 420 in the indoor / outdoor direction between the vertical frame members 41B3, 42B3 and the ridges 41B31, 42B31 attached to the vertical frame members 41B3, 42B3. The ridges 41B31, 42B31 have fin members 41B32, 42B32 made of a soft material that elastically contacts the indoor side X2 surface of the face materials 410, 420. Gaskets 41B33, 42B33 made of rubber or resin are provided between the vertical frame members 41B3, 42B3 and the outdoor side X1 surface of the face materials 410, 420. The packings 41B33, 42B33 are attached to the vertical frame members 41B3, 42B3 to prevent damage to the face materials 410, 420 and ensure airtightness and watertightness between the vertical frame members 41B3, 42B3 and the face materials 410, 420.

[0106] Although one embodiment of the remodeling fixture of the present disclosure has been described above, the remodeling fixture of the present disclosure can be modified as appropriate. For example, the remodeling fixture of the present disclosure is not limited to the one having two shoji screens described above. The remodeling fixture of the present disclosure may have three or more shoji screens, or may be a single-sliding window having one shoji screen.

[0107] In the above-described remodeled fitting 1, the rail member 33B provided on the newly installed vertical frame 33 does not necessarily have to be provided.

[0108] In the above-mentioned renovated building fixture 1, the new upper frame 31, the new lower frame 32, and the new vertical frame 33 that constitute the new frame 3 each have an insulating structure in which metal frame members divided in the indoor / outdoor directions are connected by connecting members 313, 323, and 333, but such an insulating structure may be provided in at least one of the frame members among the top, bottom, left, and right frame members that constitute the new frame. The new frame 3 does not necessarily have to have a connecting member.

[0109] In the above-mentioned renovation fitting 1, all frame members on the top, bottom, left and right sides of the newly constructed frame 3 are positioned so as to face the inner surface of the existing frame 2 without any other members being interposed between them and the existing frame 2, but the frame members thus positioned so as to face the inner surface of the existing frame 2 may be at least one of the frame members on the top, bottom, left and right sides.

[0110] In the above-mentioned remodeling fitting 1, the insulating materials 501, 502, and 503 are provided in the upper, lower, left, and right frame members of the newly constructed frame 3, respectively, but the insulating materials may be provided in at least one of the upper, lower, left, and right frame members of the newly constructed frame 3. The newly constructed frame 3 does not necessarily have to have the insulating materials 501, 502, and 503.

[0111] The remodeling fixture of the present disclosure is not limited to being applied to an existing frame 2 having an existing lower frame 22 formed so that the height gradually decreases from the indoor side X2 to the outdoor side X1, as in the above-mentioned remodeling fixture 1. The remodeling fixture of the present disclosure can also be applied to a case where an existing frame having an existing lower frame 220 in which a pair of guide rails 221a, 221b are protruding at the same height, as shown in FIG.

[0112] In the above-mentioned remodeled fitting 1, an example was shown in which the shoji screens 41, 42, each containing a surface material 410, 420 made of two layers of glass, were attached to the newly constructed frame 3, but the glass constituting the surface materials 410, 420 is not limited to two layers, and may be, for example, three layers. Figures 13 and 14 show a remodeled fitting 1 in which the shoji screens 41, 42, each containing a surface material 410, 420 made of three layers of glass, are slidably attached to a newly constructed frame 3 having the same configuration as in Figures 2 and 3.

[0113] 15 and 16 show a remodeling fitting 1A according to the second embodiment. This remodeling fitting 1A is configured so that a new frame 3 can be fitted into the existing frame 2 from the inside X2. In Figs. 15 and 16, parts with the same reference numerals as those in the remodeling fitting 1 according to the first embodiment indicate parts with the same configuration, so their explanations will refer to the explanations in the remodeling fitting 1 and may be omitted below. The new lower frame of the remodeling fitting 1A has the same configuration as the new lower frame 32 of the remodeling fitting 1.

[0114] The new upper frame 31Y1 in the remodeled fitting 1A is composed of a frame member main body 31A, a rail member 31B, and a new upper frame dividing portion 34 arranged on the outer periphery of the frame member main body 31A. The frame member main body 31A in the remodeled fitting 1A does not have the outdoor wall portion 315 that is integral with the frame member main body 31A in the remodeled fitting 1. Therefore, the frame member main body 31A does not have an extension plate portion that extends outward from the upper surface 311a of the outdoor frame member 311.

[0115] The new upper frame dividing part 34 is fixed to the existing upper frame 21 via the mounting piece 35. The frame member main body 31A is attached to the inner periphery of the existing upper frame 21 to which the new upper frame dividing part 34 is fixed. The new upper frame dividing part 34 is disposed on the upper part of the frame member main body 31A, and is thereby disposed between the existing upper frame 21 and the frame member main body 31A. The new upper frame dividing part 34 is composed of an extruded shape formed by extruding a metal material such as aluminum in the longitudinal direction, or a bent product formed by bending a metal plate material.

[0116] The new upper frame dividing portion 34 extends in the longitudinal direction of the existing upper frame 21 below the existing upper frame 21. The new upper frame dividing portion 34 includes an indoor / outdoor direction extending plate 341 extending in the indoor / outdoor direction below the existing upper frame 21. The indoor / outdoor direction extending plate 341 extends between the guide rails 211a, 211b of the existing upper frame 21 below the guide rails 211a, 211b of the existing upper frame 21.

[0117] The indoor / outdoor direction extending plate 341 has an outdoor extension part 3412 integrally therewith, which extends toward the outdoor side X1 at a position lower than the upper surface 341a of the indoor / outdoor direction extending plate 341. The outdoor extension part 3412 also serves as a drainage groove that drains rainwater that has infiltrated into the upper surface of the newly installed upper frame divided part 34 in the left / right direction without allowing it to flow into the indoor side X2.

[0118] At the outermost X1 portion of the outdoor extension portion 3412, an outdoor upper wall portion 342 extending upward in the find direction and an outdoor lower wall portion 343 extending downward in the find direction are integrally provided.

[0119] The outdoor upper wall portion 342 protrudes further upward than the upper surface 341a of the indoor / outdoor direction extending plate 341, and is disposed so as to overlap from the outdoor side surface 211d of the guide rail 211c on the outdoor side X1 of the existing upper frame 21. The outdoor upper wall portion 342 is disposed on the outdoor side X1 of the existing upper frame 21, and is disposed along the surface of the outdoor side X1 of the existing upper frame 21.

[0120] The outdoor lower wall portion 343 extends downward from the end portion of the outdoor extension portion 3412 on the most outdoor side X1. A gasket 343a is attached to the indoor side X2 surface of the outdoor lower wall portion 343. The upper portion of the guide rail 314c constituting the end face of the outdoor side X1 of the frame member main body 31A abuts against the gasket 343a. In this way, the gasket 343a waterproofs the portion on the outdoor side X where the frame member main body 31A and the new upper frame divided portion 34 abut against each other.

[0121] The decorative material 316 is attached removably from the outside side X1 to the new upper frame divided part 34. The decorative material 316 covers the outside upper wall part 342 and the outside lower wall part 343, and extends upward in the sight direction beyond the existing upper frame 21 to form the sight surface of the outside side X1 of the new upper frame 31. The decorative material 316 covers and conceals the sealing material 104 exposed between the existing upper frame 21 and the exterior wall material 102 from the outside side X1.

[0122] An elastic fin member 344 is provided on the outdoor side X1 portion of the upper surface 341a of the indoor / outdoor direction extending plate 341. The fin member 344 protrudes upward from the upper surface 341a of the indoor / outdoor direction extending plate 341 so as to be close to the guide rail 211b of the existing upper frame 21.

[0123] Even if rainwater seeps into the new upper frame division part 34 between the outdoor upper wall part 342 and the guide rail 211c of the existing upper frame 21, it flows left and right through the outdoor extension part 3412 and is drained to the outer periphery side of the new vertical frame 33. Therefore, infiltration into the indoor side X2 is suppressed. Even if a large amount of rainwater seeps into the outdoor extension part 3412, the fin member 344 prevents the rainwater from seeing into the indoor side X2. Because the fin member 344 is elastic, even if the new upper frame division part 34 comes into contact with the existing upper frame 21, etc. when it is positioned on the inner periphery side of the existing upper frame 21, it can bend elastically and there is no risk of damage.

[0124] The new upper frame partition 34 is fixed to the guide rail 211b of the existing upper frame 21 via an L-shaped mounting piece 35 by a screw 35b.

[0125] As shown in FIG. 17, the mounting piece 35 has a base portion 351, a contact portion 352, and a screw base portion 353 provided between the base portion 351 and the contact portion 352. The base portion 351 is attached to the upper surface 341a of the indoor / outdoor extending plate 341, and is fixed to the indoor / outdoor extending plate 341 by the screw 34a. The contact portion 352 contacts the guide rail 211b of the existing upper frame 21 from the indoor side X2. The screw base portion 353 is provided so as to connect the base portion 351 and the contact portion 352 obliquely. The surface of the screw base portion 353 is formed so as to face obliquely downward on the indoor side X2. The mounting piece 35 is formed, for example, by an extrusion formed by extruding a metal material such as aluminum in the length direction, or a bent product formed by bending a metal plate material.

[0126] The new upper frame division 34 is fixed to the inner periphery of the existing upper frame 21 by a screw 35b which penetrates the screw base portion 353 of the mounting piece 35 from diagonally below and is screwed into the guide rail 211b. Although not shown, the indoor / outdoor direction extension plate 341 of the new upper frame division 34 has a through hole formed therein through which the screw 35b can be inserted from the lower side of the new upper frame division 34 toward the screw base portion 353.

[0127] In this embodiment, the outdoor upper wall portion 342 is not provided in the frame member main body 31A, but is provided in the new upper frame division portion 34. For example, if the outdoor upper wall portion 342 is not provided in the new upper frame division portion 34, but is provided in the frame member main body 31A like the outdoor wall portion 315 of the remodeled fitting 1, the outdoor upper wall portion 342 extending from the frame member main body 31A to the outer periphery side (upward) will hit the existing upper frame 21 when the new upper frame 31Y1 is assembled to the existing upper frame 21 from the indoor side X2. Therefore, in order to avoid the existing upper frame 21, it is necessary to insert the new upper frame into the inside of the existing frame 2 while tilting it from the indoor side X2 with the new frame assembled on all four sides, and then pull it to the existing upper frame 21 to attach the new upper frame to the existing upper frame 21. Once the newly installed upper frame is extended to the outside side X1, for example, if a grille, shutter, etc. is installed on the outside side X1, the newly installed frame may come into contact with the grille, shutter, etc. installed on the outside side X1.

[0128] In contrast, in this embodiment, the new upper frame 31Y1 is divided into a frame member main body 31A, a rail member 31B, and a new upper frame divided part 34. An outdoor upper wall part 342 is provided in the new upper frame divided part 34, and the new upper frame divided part 34 is first attached to the existing upper frame 21, and then the new frame 3 assembled around all four sides without the new upper frame divided part 34 attached is attached to the inner periphery side of the existing frame 2. This allows the new upper frame to be easily attached from the indoor side X2 without having to be inserted into the inside of the existing upper frame 21 from the indoor side X2 while tilting it and then brought out to the outdoor side X1.

[0129] From a similar perspective, the newly installed vertical frame 33Y1 in the remodeling fitting 1A also does not have an extension plate portion that extends to the outer periphery (left and right viewing direction) of the frame member main body 33A as shown in Fig. 16. In other words, the outdoor frame member 331 of the frame member main body 33A does not have an outdoor wall portion 334 that extends outward in the viewing direction at the outdoor-most X1 part of the outdoor frame member 331 in the remodeling fitting 1.

[0130] Next, the procedure for constructing the remodeled fitting 1A will be described. When constructing the remodeled fitting 1A, a new frame 3 is prepared in advance by assembling a new upper frame 31Y1 (frame member main body 31A and rail member 31B), a new lower frame (not shown), and new vertical frames 33 on the left and right sides, without attaching a new upper frame division part 34 to the new frame 3.

[0131] When constructing the remodeled fitting 1A, first, as shown in Fig. 17, the new upper frame division part 34 is fixed to the lower part of the existing upper frame 21 (new frame division part fixing process). Specifically, as shown in Fig. 17 and Fig. 18, the new upper frame division part 34 is fixed via the mounting piece 35 to the guide rail 211b for the existing shoji screen, which is provided on the existing upper frame 21 and protrudes downward, with screws 35a and 35b.

[0132] Next, as shown in Fig. 18, the new frame 3 assembled on all four sides with the new upper frame divided part 34 separated from the new upper frame 31 is fitted into the opening of the existing frame 2 from the indoor side X2 of the existing frame 2 in a state in which the lower end side (the new lower frame side) is tilted so that it is located on the outdoor side X1 rather than the upper end side (the new upper frame 31Y1 side), and while rotating around the lower end side, as shown in Fig. 19, the frame member main body 31A is moved from the indoor side X2 to the outdoor side X1 on the indoor side X2 surface of the outdoor side lower wall part 343 of the new upper frame divided part 34 fixed to the existing upper frame 21. As a result, the upper part of the guide rail 314c on the outdoor side X1 of the frame member main body 31A is abutted against the packing 343a of the outdoor side lower wall part 343 and attached to the existing frame 2 (new frame attachment process).

[0133] Here, the new upper frame 31Y1 with the new upper frame division part 34 separated does not have an extension plate part that extends in the direction of the building skeleton 100 side on the outside X1, that is, the outside wall part 315 of the new upper frame 31 and the outside wall part 334 of the new vertical frame 33 that were provided on the remodeled fitting 1. As a result, the new upper frame 31Y1 and the left and right newly installed vertical frames 33 do not collide with the existing frame 2, so there is no need to once move the new upper frame 31Y1 side to the outside X1 of the existing frame 2 and pull it to the inside X2 to attach it to the existing frame 2. In other words, the new frame 3 can be easily attached to the existing frame 2 from the inside X2. This improves the workability of the remodeled fitting 1A.

[0134] 19, the mounting portion 318 of the new upper frame 31Y1 is fixed to the building skeleton 100 by the screw SC1. At this time, the spacer member 301 is interposed in the gap formed between the mounting portion 318 of the new upper frame 31Y1 and the building skeleton 100.

[0135] Next, as shown in Fig. 20, at the outside side X1, the decorative material 316 is attached to the outside side X1 of the new upper frame divided portion 34. At the inside side X2, the decorative cover 51 is attached to the angle member 319 of the new upper frame 31Y1. An L-shaped parting material 61 is attached to the boundary between the decorative cover 51 and the inner peripheral surface of the frame member 101. Although not shown, a decorative cover 53 is also attached to the new vertical frame 33Y1 in a similar manner. An insulating material may be housed inside the decorative covers 51, 53, similar to the insulating materials 501, 503 of the remodeled fitting 1.

[0136] Figures 21 to 23 show a remodeling fitting 1B according to the third embodiment. This remodeling fitting 1B differs from the remodeling fitting 1 according to the first embodiment and the remodeling fitting 1A according to the second embodiment in the configuration of the rail members. In Figures 21 to 23, parts with the same symbols as the remodeling fitting 1 according to the first embodiment and the remodeling fitting 1A according to the second embodiment indicate parts with the same configuration, so the explanation of those parts will be cited from the explanation of the remodeling fitting 1 and may be omitted below.

[0137] As shown in Fig. 21, in the remodeled fitting 1B, the newly installed upper frame 31Y2 is composed of a frame member main body 36A and a resin rail member 36B. The rail member 36B covers the lower side of the frame member main body 36A, and the upper frame members 41B1, 42B1 of the shoji screens 41, 42 are arranged to straddle the rail member 36B (outdoor guide rail portion 3601, indoor guide rail portion 3602) and sandwich the rail member 36B (outdoor guide rail portion 3601, indoor guide rail portion 3602) from the indoor / outdoor direction, thereby guiding the sliding movement of the shoji screens 41, 42.

[0138] The frame member main body 36A is divided into two in the front direction, an outdoor frame member 361 and an indoor frame member 362. The outdoor frame member 361 and the indoor frame member 362 are both metal frame members, and are each made of an extruded shape extruded in the length direction from a metal material such as aluminum. The outdoor frame member 361 and the indoor frame member 362 are integrally connected by a pair of upper and lower connecting members 363. The connecting members 363 are made of a material having thermal insulation properties such as resin, and block the transfer of heat from the outdoor frame member 361 to the indoor frame member 362 in the frame member main body 36A. The frame member main body 36A is not provided with a guide rail for guiding the sliding movement of the screens 41, 42.

[0139] The outdoor frame member 361 and the indoor frame member 362 have hollows 3611 and 3621, respectively. The upper surface 361a of the outdoor frame member 361 corresponding to the hollow portion 3611 forms an inclined surface that slopes downward from the indoor side X2 toward the outdoor side X1. The upper surface 362a of the indoor frame member 362 corresponding to the hollow portion 3621 is a flat surface. The uppermost portion 361a1 of the upper surface 361a of the outdoor frame member 361 is disposed flush with the upper surface 362a of the indoor frame member 362 in the forward direction. The connecting member 363 does not protrude above the portion 361a1 of the upper surface 361a of the outdoor frame member 361 and the upper surface 362a of the indoor frame member 362.

[0140] The outdoor frame member 361 has an outdoor extension 3612 integrally therewith, which extends toward the outdoor side X1 at a position lower than the upper surface 361a of the outdoor frame member 361. The outdoor extension 3612 is disposed at the end of the outdoor side X1 of the new upper frame 31Y2. The outdoor extension 3612 also serves as a drainage groove that drains rainwater that has infiltrated onto the new upper frame 31Y2 in the left-right direction without allowing it to flow into the indoor side X2.

[0141] An outdoor wall portion 364 extending upward in the viewing direction is integrally provided at the outermost X1 portion of the outdoor extension portion 3612. The outdoor wall portion 364 protrudes further upward than the upper surfaces 361a, 362a of the outdoor frame member 361 and the indoor frame member 362, and is disposed so as to overlap, from the outdoor side X1, the outdoor side surface 211d of the outermost X1 guide rail 211c of the existing upper frame 21. The decorative material 316 is attached to the outdoor wall portion 364 so as to be detachable from the outdoor side X1.

[0142] An attachment portion 365 for fixing the new upper frame 31Y2 to the building skeleton 100 is integrally provided at the portion of the frame member main body 36A closest to the indoor side X2. The attachment portion 365 is disposed parallel to the upper surface 362a of the indoor side frame member 322, and extends in a plate shape from an upper portion of an end surface 362b of the indoor side X2 of the indoor side frame member 362 toward the indoor side X2. The frame member main body 36A is fixed to the building skeleton 100 by a screw SC1 penetrating the attachment portion 365.

[0143] The rail member 36B extends over the entire length of the frame member main body 36A so as to cover the lower surface of the frame member main body 36A, specifically, from the lower surface 361b of the outdoor frame member 361 to the lower surface 362c of the indoor frame member 362. The rail member 36B is attached to the frame member main body 36A by screws 36a and 36b.

[0144] The rail member 36B has three hollow portions 366a, 366b, and 366c that are adjacent to each other in the indoor / outdoor direction. An upper surface 366d that is formed flush in the indoor / outdoor direction across the three hollow portions 366a, 366b, and 366c is a flat surface. The upper surface 366d is disposed so as to face the lower surface 361b of the outdoor frame member 361 and the lower surface 362c of the indoor frame member 362.

[0145] An outdoor guide rail section 3601, an indoor guide rail 3602, and a screen door guide rail 3603, each of which is made of resin and protrudes downward, are integrally provided on a lower surface 366e formed in the indoor / outdoor direction across the three hollow sections 366a, 366b, and 366c. The outdoor guide rail section 3601 protrudes downward from the outdoor side X1 end of the central hollow section 366b. The indoor side guide rail section 3602 protrudes downward from the indoor side X2 end of the central hollow section 366b. The screen door guide rail 3603 protrudes downward from the outdoor side X1 end of the outermost hollow section 366a on the outdoor side X1. At the end of the hollow portion 366c on the inner side X2 of the room, which is on the innermost side X2, there is integrally provided an indoor side protruding portion 3604 made of resin which protrudes downward further than the outdoor side guide rail portion 3601, the indoor side guide rail 3602, and the screen guide rail 3603.

[0146] An attachment portion 367 is integrally formed at an end portion of the rail member 36B on the innermost side X2. The attachment portion 367 extends in a plate shape from an upper end portion of the hollow portion 366c on the innermost side X2 toward the inner side X2.

[0147] The frame member main body 36A and the rail member 36B are fixed by the screw 36a on the outdoor side X1 and by the screw 36b on the indoor side X2 with the upper surface 366d of the rail member 36B across the three hollow portions 366a, 366b, 366c facing the lower surfaces 361b, 361c of the frame member main body 36A. The screw 36a is screwed from above the outdoor extension portion 3612 of the frame member main body 36A toward the hollow portion 366a of the outdoor side X1 of the rail member 36B so as to penetrate the upper surface 366d. The screw 36b is screwed from below the indoor side X2 of the rail member 36B obliquely upward so as to penetrate the mounting portion 367 and the lower surface 362c of the indoor side frame member 362 of the frame member main body 36A.

[0148] The angle member 319 arranged on the indoor side X2 of the new upper frame 31Y2 is provided separately from the rail member 36B. The angle member 319 is attached by a screw 319c with the vertical wall portion 319b abutting against the hollow portion 366c on the indoor side X2 of the rail member 36B from the indoor side X2.

[0149] As shown in Fig. 22, in the remodeled fitting 1B, the newly installed lower frame 32Y2 is composed of a frame member main body 37A and a resin rail member 37B. The rail member 37B covers the upper side of the frame member main body 37A, and the lower frame members 41B2, 42B2 of the shoji screens 41, 42 are arranged to straddle the rail member 37B (outdoor guide rail portion 3701, indoor guide rail portion 3702) and sandwich the rail member 37B (outdoor guide rail portion 3701, indoor guide rail portion 3702) from the indoor / outdoor direction, thereby guiding the sliding movement of the shoji screens 41, 42.

[0150] The frame member main body 37A is divided into two in the front direction, an outdoor frame member 371 and an indoor frame member 372. The outdoor frame member 371 and the indoor frame member 372 are both metal frame members, and are each made of an extruded shape extruded in the length direction from a metal material such as aluminum. The outdoor frame member 371 and the indoor frame member 372 are integrally connected by a pair of upper and lower connecting members 373. The connecting members 373 are made of a material having thermal insulation properties such as resin, and block the transfer of heat from the outdoor frame member 371 to the indoor frame member 372 in the frame member main body 37A. The frame member main body 37A is not provided with a guide rail for guiding the sliding movement of the screens 41, 42.

[0151] The outdoor frame member 371 has two hollow portions 3711, 3712 in order from the outdoor side X1. The indoor frame member 372 has two hollow portions 3721, 3722 in order from the outdoor side X1. An upper surface 371a of the outdoor frame member 371 across the hollow portions 3711, 3712 is a flat surface that is flush with the indoor / outdoor direction. An upper surface 372a of the indoor frame member 372 across the hollow portions 3721, 3722 is a flat surface that is flush with the indoor / outdoor direction. The connecting member 373 does not protrude above the upper surface 371a of the outdoor frame member 371 and the upper surface 372a of the indoor frame member 372.

[0152] An outdoor wall portion 374 extending downward is integrally provided at the end of the outdoor side X1 of the outdoor frame member 371. The height adjustment member 325 of the new lower frame 32Y2 is attached to the lower end of the outdoor side wall portion 374. The decorative material 326 is attached to the outdoor side wall portion 374 so as to be detachable from the outdoor side X1.

[0153] An attachment portion 375 for fixing the new lower frame 32Y2 to the building skeleton 100 is integrally provided at the portion of the frame member main body 37A closest to the indoor side X2. The attachment portion 375 is disposed parallel to the lower surface 372c of the indoor side frame member 372, and extends in a plate shape from a lower portion of the end surface 372b of the indoor side frame member 372 on the indoor side X2 toward the indoor side X2. The frame member main body 37A is fixed to the building skeleton 100 by a screw SC2 penetrating the attachment portion 375.

[0154] The rail member 37B extends over the entire length of the frame member main body 37A so as to cover the upper surface of the frame member main body 37A, specifically, from the upper surface 371a of the outdoor frame member 371 to the upper surface 372a of the indoor frame member 372. The rail member 37B is attached to the frame member main body 37A by screws 37a and 37b.

[0155] The rail member 37B has three hollow portions 376a, 376b, and 376c that are adjacent to each other in the indoor / outdoor direction. A lower surface 376d that is formed flush in the indoor / outdoor direction across the three hollow portions 376a, 376b, and 376c is a flat surface. The lower surface 376d is disposed so as to face from an upper surface 371a of the outdoor frame member 371 to an upper surface 372a of the indoor frame member 372.

[0156] An outdoor-side guide rail section 3701, an indoor-side guide rail 3702, and a screen door guide rail 3703, each of which is made of resin and protrudes upward, are integrally provided on an upper surface 376e formed in the indoor / outdoor direction across the three hollow sections 376a, 376b, and 376c. The outdoor-side guide rail section 3701 protrudes upward from the outdoor-side X1 end of the central hollow section 376b. The indoor-side guide rail section 3702 protrudes upward from the indoor-side X2 end of the central hollow section 376b. The screen door guide rail 3703 protrudes upward from the outdoor-side X1 end of the outermost hollow section 376a on the outdoor side X1. At the end of the hollow portion 376c on the inner side X2 of the room, which is on the innermost side X2, there is integrally provided an indoor side protruding portion 3704 made of resin which protrudes upward further than the outdoor side guide rail portion 3701, the indoor side guide rail 3702, and the screen guide rail 3703.

[0157] An attachment portion 377 is integrally formed at an end portion of the rail member 37B on the innermost side X2. The attachment portion 377 extends in a plate shape from a lower end portion of the hollow portion 376c on the innermost side X2 toward the inner side X2.

[0158] A core material 378 is accommodated inside the central hollow portion 376b of the rail member 37B. The core material 378 may be an extrusion formed by extruding a metal material such as aluminum in the length direction, or a bent product formed by bending a metal plate material, or may be a pultrusion product formed by pultrusion including carbon fiber and a resin such as epoxy. The core material 378 has one core material hollow portion 378a having a rectangular cross section and a protruding wall portion 378b protruding from the core material hollow portion 378a toward the outside side X1, and has an overall outer shape that follows the inner surface of the hollow portion 376a of the rail member 37B. The protruding wall portion 378b extends from the upper end surface of the core material hollow portion 378a on the outside side X1 toward the outside side X1 and is bent downward. The lower end portion of the protruding wall portion 378b bent downward is bent toward the inside side X2.

[0159] The frame member main body 37A and the rail member 37B are fixed by a screw 37a on the outdoor side X1 and by a screw 37b on the indoor side X2 with a lower surface 376d across the three hollow portions 376a, 376b, and 376c of the rail member 37B facing the upper surfaces 371a and 372a of the frame member main body 37A. The screw 37a is screwed from below the frame member main body 37A so as to penetrate the upper surface 371a corresponding to the hollow portion 3711 on the outdoor side X1 and the lower surface 376d toward the hollow portion 376a on the outdoor side X1 of the rail member 37B. An insertion hole 3711a for inserting the screw 37a from below is formed in the lower surface of the hollow portion 3711 of the frame member main body 37A. The screw 37b is screwed obliquely downward from above the indoor side X2 of the rail member 37B so as to penetrate the mounting portion 377 and the upper surface 372a of the indoor side frame member 372 of the frame member main body 37A.

[0160] The angle member 328 arranged on the indoor side X2 of the new lower frame 32Y2 is provided separately from the rail member 37B. The angle member 328 is attached by a screw 328c with the vertical wall portion 328b abutting against the hollow portion 376c on the indoor side X2 of the rail member 37B from the indoor side X2.

[0161] As shown in Fig. 23, in the remodeled fitting 1B, the newly installed vertical frame 33Y2 is composed of a frame member main body 38A and a resin rail member 38B. The rail member 38B covers the inner side of the frame member main body 38A, and the vertical stile members 41B3, 42B3 of the shoji screens 41, 42 are arranged to straddle the rail member 38B (outdoor guide rail portion 3801, indoor guide rail portion 3802) and sandwich the rail member 38B (outdoor guide rail portion 3801, indoor guide rail portion 3802) from the indoor / outdoor direction, thereby guiding the sliding movement of the shoji screens 41, 42.

[0162] The frame member main body 38A is divided into two in the front direction, an outdoor frame member 381 and an indoor frame member 382. The outdoor frame member 381 and the indoor frame member 382 are both metal frame members, and are each made of an extruded shape extruded in the length direction from a metal material such as aluminum. The outdoor frame member 381 and the indoor frame member 382 are integrally connected by a pair of left and right connecting members 383. The connecting members 383 are made of a material having thermal insulation properties such as resin, and block the transfer of heat from the outdoor frame member 381 to the indoor frame member 382 in the frame member main body 38A.

[0163] The position of the connecting member 383 in the new vertical frame 33Y2 in the forward direction coincides with the positions of the connecting members 363, 373 in the new upper frame 31Y2 and the new lower frame 32Y2 in the forward direction. The upper and lower ends of the connecting member 383 are arranged in contact with or in close proximity to the left and right ends of the connecting members 363, 373 of the new upper frame 31Y2 and the new lower frame 32Y2. The connecting members 363, 373, 383 are substantially continuous around the four periphery of the new frame 3.

[0164] The outdoor frame member 381 has a hollow portion 3811 having a substantially rectangular cross section. The indoor frame member 382 has a hollow portion 3821 having a substantially rectangular cross section. The outer side surface 381a of the outdoor frame member 381 corresponding to the hollow portion 3811 and the outer side surface 382a of the indoor frame member 382 corresponding to the hollow portion 3821 are both flat surfaces and are arranged flush with each other in the projection direction of the newly installed vertical frame 33Y2. The connecting member 383 does not protrude outward from these outer sides 381a, 382a. The inner side surface 381b of the outdoor frame member 381 corresponding to the hollow portion 3811 and the inner side surface 382b of the indoor frame member 382 corresponding to the hollow portion 3821 are both flat surfaces and are arranged flush with each other in the projection direction of the newly installed vertical frame 33Y2. The connecting member 383 does not protrude inward from these inner sides 381b, 382b.

[0165] An outdoor wall portion 384 extending outward in the find direction is provided integrally with the outdoor-most X1 portion of the outdoor frame member 381. The outdoor wall portion 384 protrudes outward in the find direction further than the outer sides 381a, 382a of the outdoor frame member 381 and the indoor frame member 382, ​​and is disposed so as to overlap from the outdoor side X1 with the end face 23a of the outdoor-most X1 of the existing vertical frame 23. The decorative material 335 is attached to the outdoor wall portion 384 in a detachable manner from the outdoor side X1.

[0166] An attachment portion 385 used to fix the new vertical frame 33Y2 to the building skeleton 100 is integrally provided at the part of the indoor side frame member 382 closest to the indoor side X2. The attachment portion 385 extends in a plate shape from an end face 382c of the indoor side X2 of the indoor side frame member 382 toward the indoor side X2. The attachment portion 385 is disposed parallel to the outer surfaces 381a, 382a of the outdoor side frame member 381 and the indoor side frame member 382. The frame member main body 38A is fixed to the building skeleton 100 by a screw SC3 penetrating the attachment portion 385.

[0167] The rail member 38B extends over the entire length of the frame member main body 38A so as to cover the inner surface of the frame member main body 38A, specifically, from the inner side surface 381b of the outdoor frame member 381 to the inner surface 382b of the indoor frame member 382. The rail member 38B is attached to the frame member main body 38A by screws 38a and 38b.

[0168] The rail member 38B has three hollow portions 386a, 386b, and 386c that are adjacent to each other in the indoor / outdoor direction. An outer surface 386d that is formed flush in the indoor / outdoor direction across the three hollow portions 386a, 386b, and 386c is a flat surface. The outer surface 386d is disposed so as to face from an inner surface 381b of the outdoor frame member 381 to an inner surface 382b of the indoor frame member 382.

[0169] An outer guide rail section 3801, an inner guide rail 3802, and a screen door guide rail 3803 made of resin are integrally provided on an inner surface 386e formed in the indoor / outdoor direction across the three hollow sections 386a, 386b, and 386c, each of which protrudes inward. The outer guide rail section 3801 protrudes inward from the outer side X1 end of the central hollow section 386b. The inner guide rail section 3802 protrudes inward from the inner side X2 end of the central hollow section 386b. The screen door guide rail 3803 protrudes inward from the outer side X1 end of the outermost hollow section 386a at the outermost X1. At the end of the hollow portion 386c on the inner side X2 of the room, which is on the innermost side X2, there is integrally provided an indoor side protruding portion 3804 made of resin which protrudes inward further than the outdoor side guide rail portion 3801, the indoor side guide rail 3802, and the screen guide rail 3803.

[0170] An attachment portion 387 is formed integrally with the end portion of the rail member 38B on the innermost side X2. The attachment portion 387 extends in a plate shape from the outer end portion of the hollow portion 386c on the innermost side X2 toward the inner side X2.

[0171] The frame member main body 38A and the rail member 38B are fixed by the screw 38a on the outdoor side X1 and by the screw 38b on the indoor side X2 with the outer surface 386d of the rail member 38B across the three hollow portions 386a, 386b, 386c facing the outer surfaces 381b, 382b of the frame member main body 38A. The screw 38a is screwed from the outside of the frame member main body 38A so as to penetrate the outer surface 386d toward the inner surface 381b corresponding to the hollow portion 3811 on the outdoor side X1 and the hollow portion 386a on the outdoor side X1 of the rail member 38B. An insertion hole 3811a for inserting the screw 38a from the outside is formed on the outer surface of the hollow portion 3811 of the frame member main body 38A. The screw 38b is screwed obliquely outward from the inside of the indoor side X2 of the rail member 38B so as to penetrate the mounting portion 387 and the inner surface 382b of the indoor side frame member 382 of the frame member main body 38A.

[0172] The angle member 338 arranged on the indoor side X2 of the new vertical frame 33Y2 is provided separately from the rail member 38B. The angle member 338 is attached by a screw 388c in a state in which the vertical wall portion 388b is abutted against the hollow portion 386c on the indoor side X2 of the rail member 38B from the indoor side X2.

[0173] The remodeling fittings 1, 1A, and 1B of the above-described embodiments have the following advantages.

[0174] The renovated fittings 1, 1A, 1B have an existing frame 2 that is attached to an opening in a building structure 100, a new frame 3 that is attached around the four inner periphery of the existing frame 2, and at least one resin screen 41, 42 that is placed inside the new frame 3 so that it can slide left and right. Of the upper, lower, left and right frame members that make up the new frame 3, at least the upper and lower frame members, the new upper frame 31, 31Y1, 31Y2 and the new lower frame 32, 32Y2, are composed of frame member main bodies 31A, 32A, 36A, 37A that contain metal, and rail members 31B, 32B, 36B, 37B that cover the frame member main bodies 31A, 32A, 36A, 37A and guide the sliding movement of the screen 41, 42.

[0175] According to this, resin rail members 31B, 32B, 36B, 37B are provided on at least the new upper frame 31, 31Y1, 31Y2 and the new lower frame 32, 32Y2 of the newly constructed frame 3, and the resin screens 41, 42 are slidably accommodated in these rail members 31B, 32B, 36B, 37B, thereby improving the insulating performance of the renovated fittings 1, 1A, 1B.

[0176] In the remodeled fittings 1, 1A, and 1B, the new frame 3 is assembled on all four sides and fixed to the inner periphery of the existing frame 2.

[0177] This allows the new frame 3 to be easily attached to the inner periphery of the existing frame 2.

[0178] In the renovated fittings 1, 1A, 1B, the frame member main bodies 31A, 32A, 36A, 37A are composed of exterior frame members 311, 321, 361, 371 which are multiple metal frame members divided in the indoor and outdoor directions, and connecting members 313, 323, 363, 373 having insulating properties which integrally connect the exterior frame members 311, 321, 362, 372.

[0179] According to this, the connecting members 313, 323, 363, 373 block heat transfer between the outside side X1 and the inside side X2 of the frame member main bodies 31A, 32A, 36A, 37A, thereby further improving the insulation performance of the renovated fittings 1, 1A, 1B.

[0180] In the renovated building fixtures 1, 1B, the frame member main bodies 31A, 32A, 36A, 37A are arranged to face the inner surface of the existing frame 2 and are fixed to the building structure 100 on the indoor side X2, further than the existing frame 2, by screws SC1, SC2, which are fixing members that penetrate through portions on the indoor side X2, further than the connecting members 313, 323, 363, 373.

[0181] According to this, when the new frame 3 is attached to the inner periphery of the existing frame 2, at least the existing upper frame 21 and the existing lower frame 22 and the new upper frame 31, 31Y2 and the new lower frame 32, 32Y2 are not interposed between them, so that at least the new upper frame 31, 31Y2 and the new lower frame 32, 32Y2 can be arranged as close as possible to the existing upper frame 21 and the existing lower frame 22. Therefore, it is possible to construct a remodeling fitting 1, 1B in which the dimensions of the frame members in the viewing direction are as compact as possible. At least the new upper frame 31, 31Y2 and the new lower frame 32, 32Y2 are not fixed to the existing upper frame 21 and the existing lower frame 22, so that they can be attached without being affected by the distortion state of the existing upper frame 21 and the existing lower frame 22. Therefore, the workability of the new frame 3 is improved. Since the screws SC1 and SC2, which are the fixing members, do not come into contact with at least the existing upper frame 21 and the existing lower frame 22, heat is not transferred between the existing upper frame 21 and the existing lower frame 22 and the indoor side X2 of the connecting members 313, 323, 363, 373 of the new upper frames 31, 31Y2 and the new lower frames 32, 32Y2 via the screws SC1, SC2, resulting in excellent insulation properties.

[0182] The frame member bodies 31A, 32A, 36A, 37A have mounting portions 318, 327, 365, 375 which extend toward the indoor side X2 and through which the screws SC1, SC2 serving as fixing members are inserted.

[0183] According to this, by passing the screws SC1, SC2, which are fixing members, through the mounting portions 318, 327, 365, 375 extending from the newly installed upper frame 31, 31Y1, 31Y2 and the newly installed lower frame 32, 32Y2 toward the indoor side X2, the newly installed upper frame 31, 31Y1, 31Y2 and the newly installed lower frame 32, 32Y2 can be easily fixed to the building structure 100 from the indoor side X2, further improving workability. [Explanation of symbols]

[0184] 1,1A,1B Renovated fittings, 2 Existing frame, 3 New frame, 31,31Y1,31Y2 New upper frame, 32,32Y2 New lower frame, 31A,32A,36A,37A Frame member body, 31B,32B,36B,37B Rail member, 311,321,361,371 Outdoor frame member (metal frame member), 312,322,362,372 Indoor frame member (metal frame member), 313,323,363,373 Connecting member, 318,327,365,375 Mounting part, 41,42 Shoji, SC1,SC2 Screw (fixing member), X2 Indoor side, 100 Building structure

Claims

1. An existing frame that is attached to the opening of the building structure, A new frame is attached to the existing frame along the four inner periphery thereof; At least one resin-made shoji screen that can be slidably accommodated inside the newly installed frame in the left-right direction, A renovation fixture in which at least the upper and lower frame members of the upper, lower, left and right frame members that make up the newly installed frame are composed of a frame member main body containing metal, and a rail member that covers the frame member main body and guides the sliding movement of the shoji screen.

2. The renovation fixture according to claim 1 , wherein the new frame is assembled on all four sides and fixed to the inner periphery of the existing frame.

3. The remodeling fixture according to claim 1 or 2, wherein the frame member body is composed of a plurality of metal frame members divided in the indoor / outdoor direction and a connecting member having thermal insulation properties that integrally connects the plurality of metal frame members.

4. The renovation fixture described in claim 3, wherein the frame member main body is arranged to face the inner surface of the existing frame and is fixed to the building structure on the indoor side of the existing frame by a fixing member that penetrates a portion on the indoor side of the existing frame by the connecting member.

5. The remodeling fixture according to claim 4 , wherein the frame member body has an attachment portion extending toward the inside of the room and through which the fixing member passes.

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