Renovation fitting

Abstract

To provide a renovation fitting which attaches new frames to existing frames having metal parts and resin parts, and which can improve fire resistance.SOLUTION: A renovation fitting 1 is attached to an opening of a building structure 100 and includes: existing frames 21, 22, 23, and 24 each having metal parts 211, 221, 231, and 241 and resin parts 212, 222, 232, 233, and 242; new frames 31, 32, 33, 34 to be attached to the inner circumference of the existing frames 21, 22, 23, and 24; and heat foaming materials 711, 712, 721, 731, 732, 741, and 742 to be attached to the new frames 31, 32, 33, and 34 so as to foam toward the resin parts 212, 222, 232, 233, and 242.SELECTED DRAWING: Figure 4

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 frame is arranged to face the inner periphery of the existing frame. Here, the existing frame may have a composite structure in which a resin part is attached to a metal part such as aluminum. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-178575 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a remodeling fitting, when the existing frame is a composite structure in which a resin part is attached to a metal part such as aluminum, it is desirable to remove the resin part from the existing frame and then attach a new frame in order to prevent the resin part of the existing frame from burning in the event of a fire, from the viewpoint of improving fire resistance. However, it is often not easy to remove the resin part from the existing frame having a metal part and a resin part. Therefore, it is desirable to improve the fire resistance of a remodeling fitting in which a new frame is attached to an existing frame having a composite structure having a metal part and a resin part.

[0005] The present disclosure aims to provide a renovated building fixture that is equipped with an existing frame having a metal part and a resin part, and a new frame that is attached to the existing frame, thereby improving fire resistance. [Means for solving the problem]

[0006] The present disclosure relates to a renovation fitting comprising: an existing frame that is attached to an opening in a building structure and has a metal part and a resin part; a new frame that is attached to the inner periphery of the existing frame; and a heated foaming material that is attached to the new frame so as to foam toward the resin part. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a front view of a remodeled fixture according to one 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] 3 is an enlarged vertical cross-sectional view showing the lower frame portion of the remodeling fixture shown in FIG. 2. FIG. [Figure 6] 4 is an enlarged cross-sectional view showing the left vertical frame portion of the remodeled fitting shown in FIG. 3. FIG. [Figure 7] 4 is an enlarged cross-sectional view showing the right-hand vertical frame portion of the remodeled fitting shown in FIG. 3. FIG. 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 prospective direction is the direction along the indoor / outdoor direction of the remodeled fitting 1. The prospective direction is the direction along the surface direction of the surface material of the remodeled fitting 1, and is the direction perpendicular to the prospective direction. The "prospective surface" means the surface of the remodeled fitting 1 facing the outdoor side and the indoor side, and the "prospective surface" means the surface of the remodeled fitting 1 extending in the indoor / outdoor direction. In the drawings, the outdoor side of the remodeled fitting 1 is the "outdoor side X1", and the indoor side of the remodeled fitting 1 is the "indoor side X2". The horizontal direction when the remodeled fitting 1 is viewed from the front is the "left / right". The direction toward the center of the remodeled fitting 1 when viewed from the front is the "inward", and the direction away from the center of the remodeled fitting 1 is the "outward".

[0010] The remodeling fixture 1 shown in this embodiment is a remodeling sash of a sliding window type that is fitted into an opening of a wooden building structure 100. As shown in FIG. 1, the remodeling fixture 1 has an existing frame 2, a new frame 3, two shoji screens 41, 42, and one screen door 43 (see FIG. 2 and FIG. 3). The existing frame 2 is attached to the opening of the building structure 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, 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. In FIG. 1, the screen door 43 is not shown.

[0011] As shown in Figures 2 and 3, the existing frame 2 is formed by assembling four frame components, namely, an existing upper frame 21, an existing lower frame 22, and a pair of existing vertical frames 23, 24 on the left and right, in a rectangular shape, and is attached to the inside of an opening in the building structure 100 before renovation.

[0012] A frame member 101 is placed on the indoor side X2 of the existing frame 2. The frame member 101 is attached to the inner periphery of the opening of the building skeleton 100 around all four sides, top, bottom, left and right, and extends from an 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 all four sides with a backup material 103 and a sealing material 104.

[0013] As shown in Figures 2 and 4, the existing upper frame 21 is placed at the top of 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 composite structure in which resin cover materials 212, 213 (resin parts) are attached to the inner surface on the inner periphery of the frame of the metal frame body 211 (metal part), which is the existing upper frame main body. Therefore, it has excellent thermal insulation and moisture resistance. The metal frame body 211 is placed on the outside side X1 of the existing upper frame 21. The resin cover materials 212, 213 are attached to the part of the metal frame body 211 on the inside side X2 of the room.

[0014] The metal frame 211 of the existing upper frame 21 is made of a frame of extruded metal material such as aluminum. The metal frame 211 has an upper extension plate 21a extending in the forward direction, a pair of guide rails 211a, 211b for an existing shoji screen that protrude downward from the upper extension plate 21a, a guide rail 211c for an existing screen door, an interior end portion 21b formed at the end portion of the upper extension plate 21a on the interior side X2, and an upper extension plate 21d that protrudes upward from the middle of the upper extension plate 21a in the forward direction. The interior end portion 21b is formed at the end portion on the interior side X2 with a downward protrusion 21c protruding downward.

[0015] The resin cover material 212 is disposed between a pair of guide rails 211a, 211b in the existing upper frame 21. The resin cover material 212 is formed to extend in the projection direction. The resin cover material 212 extends in the direction in which the existing upper frame 21 extends, at a position above the shoji screen 42 disposed in the position shown in FIG.

[0016] The resin cover material 213 extends over the entire length of the existing upper frame 21 on the upper side of the shoji screen 41 in the direction in which it extends. The resin cover material 213 has a resin cover portion 2131 and a resin angle portion 2132. The resin cover portion 2131 is configured to include the indoor side X2 portion of the guide rail 211a in the existing upper frame 21, and is provided from the indoor side X2 surface of the guide rail 211a to the inner surface of the indoor side end portion 21b of the indoor side X2 of the metal frame body 211. The angle portion 2132 is provided at the indoor side X2 end portion of the resin cover portion 2131, and protrudes toward the indoor side X2 beyond the indoor side end portion 21b of the metal frame body 211.

[0017] The indoor side protruding plate 2132a formed at the lower end of the angle portion 2132 is formed to extend in the forward direction at the indoor side X2 end of the existing upper frame 21, and is disposed along the underside of the outdoor side X1 end of the frame member 101. Above the opening of the building skeleton 100, the indoor side X2 end of the existing upper frame 21 is fixed to the frame member 101 of the building skeleton 100 via the indoor side protruding plate 2132a at the lower end of the angle portion 2132, and is also fixed to the building skeleton 100 at the upward extension plate 21d.

[0018] As shown in Figures 2 and 5, the existing lower frame 22 is placed 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 lower frame 22 has a composite structure in which a resin cover material 222 (cover part) is attached to the inner surface on the inner periphery of the frame of a metal frame body 221 (metal part), which is the existing lower frame main body. Therefore, it has excellent thermal insulation and moisture resistance. The metal frame body 221 is placed on the outside side X1 of the existing lower frame 22. The resin cover material 222 is attached to the part of the metal frame body 221 on the inside side X2 of the room.

[0019] The metal frame 221 of the existing lower frame 22 is made of a frame of extruded metal such as aluminum. The metal frame 221 is formed in a stepped shape. The metal frame 221 is made up of an upper step 22a provided on the indoor side X2, a middle step 22c provided below the outdoor side X1 of the upper step 22a via a step 22b, a lower step 22e provided below the outdoor side X1 of the middle step 22c via a step 22d having a step middle step 22d1, an indoor side end 22f rising upward from the end of the upper step 22a on the indoor side X2, and a step for an existing shoji screen protruding upward. It has a pair of guide rails 221a, 221b, a guide rail 221c for an existing screen door, a downward extending wall portion 22h extending downward from the end of the upper portion 22a on the indoor side X2, a hollow frame portion 22i having a hollow portion at the bottom of the middle portion 22c and including part of the middle portion 22c and the step 22d, and a downward extending plate 22j extending and protruding downward from the end of the hollow frame portion 22i on the indoor side X2.

[0020] The guide rail 221a is provided midway in the forward direction of the upper stage 22a. The guide rail 221b is provided at the top of the end of the step 22d on the interior side X2 of the boundary between the middle stage 22c and the lower stage 22e. The guide rail 221c is provided at the end of the lower stage 22e on the exterior side X1 of the outermost side X1 of the existing lower frame 22. The height of the existing lower frame 22 is gradually reduced from the guide rail 221a on the interior side X2 to the guide rail 221c on the exterior side X1.

[0021] The resin cover material 222 extends over the entire length of the existing lower frame 22 below the shoji screen 41 in the direction in which it extends. The resin cover material 222 has a resin cover portion 2221 and a resin angle portion 2222. The resin cover portion 2221 is provided from the upper surface of the upper stage portion 22a of the indoor side X2 of the guide rail 221a of the existing lower frame 22 to the inner surface of the indoor side end portion 22f of the indoor side X2 of the metal frame body 221. The angle portion 2222 is provided at the end portion of the indoor side X2 of the resin cover portion 2221, and protrudes toward the indoor side X2 beyond the indoor side end portion 22f of the metal frame body 221.

[0022] The indoor side protruding plate 2222a formed at the upper end of the angle portion 2222 is formed to extend in the forward direction and is disposed along the upper surface of the outdoor side X1 end of the frame member 101. The existing lower frame 22 is fixed at the indoor side X2 end to the frame member 101 of the building skeleton 100 above the opening of the building skeleton 100 via the indoor side protruding plate 2222a at the upper end of the angle portion 2222, and is fixed to the building skeleton 100 at the downward extension plate 22j.

[0023] As shown in Fig. 3, Fig. 6 and Fig. 7, the existing vertical frames 23, 24 are arranged at both ends in the left and right direction of the opening of the building skeleton 100, and are fixed at a position biased toward the outside X1 of the opening. The existing vertical frames 23, 24 have a composite structure in which resin cover materials 232, 233, 242 (resin parts) are attached to the inner surface of the inner circumference side of the frame of the metal frame body 231, 241 (metal part), which is the existing vertical frame main body. Therefore, it has excellent heat insulation and moisture prevention properties. The metal frame body 231, 241 is arranged on the outside X1 of the existing vertical frames 23, 24. The resin cover materials 232, 233, 242 are attached to the part of the metal frame body 231, 241 on the inside X2 of the room.

[0024] The metal frame bodies 231, 241 of the existing vertical frames 23, 24 are made of extruded shapes made of metal such as aluminum. The metal frame bodies 231, 241 have side extension plates 23a, 24a extending in the projection direction, outward protruding pieces 23b, 24b protruding outward in the left-right direction from the ends of the side extension plates 23a, 24a on the outside X1 side, indoor end parts 23c, 24c rising inward in the left-right direction from the ends of the side extension plates 23a, 24a on the inside X2 side, and outward extension plates 23e, 24e protruding outward in the left-right direction from the middle of the projection direction of the side extension plates 23a, 24a.

[0025] 6 and 7, the resin cover materials 232, 242 extend over the entire length in the extending direction of the existing vertical frame 23. The resin cover materials 232, 242 have resin cover portions 2321, 2421 and angle portions 2322, 2422 made of resin.

[0026] The resin cover parts 2321, 2421 are provided from the inner side surfaces on the inner left-right direction of the ends of the indoor side X2 of the side extension plates 23a, 24a of the existing vertical frames 23, 24 to the inner surfaces of the indoor side ends 23c, 24c of the indoor side X2 of the metal frame bodies 231, 241. The angle parts 2322, 2422 are provided at the ends of the indoor side X2 of the resin cover parts 2321, 2421, and protrude toward the indoor side X2 beyond the indoor side ends 23c, 24c of the metal frame bodies 231, 241.

[0027] The indoor side protruding plates 2322a, 2422a formed at the inner ends in the left-right direction of the angle parts 2322, 2422 are formed to extend in the forward direction at the indoor side X2 ends of the existing vertical frames 23, 24, and are arranged along the inner inner side surface in the left-right direction of the frame member 101. The existing vertical frames 23, 24 have their indoor side X2 ends fixed to the frame member 101 of the building skeleton 100 via the indoor side protruding plates 2322a, 2422a at the inner ends in the left-right direction of the angle parts 2322, 2422 on the sides of the opening of the building skeleton 100, and are fixed to the building skeleton 100 at the outward extending plates 23e, 24e.

[0028] 6, the resin cover material 233 is provided only on the newly installed vertical frame 33 on the left side, and is formed to extend in the projection direction from near the center of the projection direction of the side extension plate 23a of the existing vertical frame 23 to the end of the indoor side X2, and covers the inner side surface on the inner side in the left-right direction of the side extension plate 23a. The end of the resin cover material 233 on the indoor side X2 abuts against the resin cover portion 2321 of the resin cover material 232.

[0029] 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 and 34, are assembled in advance into 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 side X2 after being brought out from the indoor side X2 of the opening of the building skeleton 100 in a pre-assembled four-sided state. 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, SC3, and SC4, which are fixing members.

[0030] Next, the configurations of the new upper frame 31, the new lower frame 32, and the pair of new vertical frames 33, 34 on the left and right sides of the new frame 3 will be explained individually.

[0031] First, the newly installed upper frame 31 will be described.

[0032] As shown in FIG. 4, 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 front direction extending from the guide rail 211c of the existing upper frame 21 to the vicinity of the center of the front direction of the frame member 101. The new upper frame 31 is divided into two in the front direction into an exterior frame member 311 and an interior frame member 312. The exterior frame member 311 and the interior 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. A connecting member 313 is disposed between the exterior frame member 311 and the interior frame member 312. The exterior frame member 311 and the interior frame member 312 are integrally connected by the 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 exterior frame member 311 to the interior frame member 312 in the new upper frame 31.

[0033] The new upper frame 31 has a pair of guide rails 314a, 314b for the two shoji screens 41, 42 that are placed inside the new frame 3, and a guide rail 314c for the screen door 43 that is placed on the outermost side X1 of the new frame 3. The guide rails 314b, 314c are arranged on the outer frame member 311 and protrude downward. The guide rail 314a is arranged adjacent to the connecting member 313 in the inner frame member 312 and protrudes downward. The guide rails 314a, 314b, 314c extend over the entire length of the new upper frame 31 in the longitudinal direction.

[0034] As shown in Fig. 4, the outdoor frame member 311 has a hollow portion 3111 having a generally rectangular cross section that extends from a portion where the guide rail 314b is disposed to the connecting member 313, and a hollow portion 3112 having a generally rectangular cross section that is disposed continuous with the indoor side X2 of the hollow portion 3111. A heated foaming material mounting recess 311b is formed on the outdoor side X1 of the upper surface 311a of the outdoor frame member 311. The heated foaming material mounting recess 311b is provided in the new upper frame 31 at a position facing the end of the resin cover material 212 of the existing upper frame 21 on the outdoor side X1, and is formed to open upward, extend a predetermined length in the projection direction, and extend over the entire length of the new upper frame 31 in the longitudinal direction.

[0035] The heated foaming material 711 is attached to the heated foaming material attachment recess 311b. The heated foaming material 711 is formed with a predetermined thickness, has a width in the projection direction, and extends over the entire length of the new upper frame 31 in the longitudinal direction. In this way, the heated foaming material 711 is attached to the upper surface 311a (projection surface) of the outdoor-side frame member 311 of the new upper frame 31. The heated foaming material 711 is attached to the upper surface 311a of the outdoor-side frame member 311 of the new upper frame 31 at a position facing the outdoor-side X1 end of the resin cover material 212 of the existing upper frame 21 in the projection direction so that the heated foaming material 711 foams toward the resin cover material 212 of the existing upper frame 21.

[0036] The heated foaming material 711 is attached to the upper surface 311a (the surface on the existing upper frame 21 side, the prospective surface) of the exterior frame member 311 of the new upper frame 31 on the side of the space where the existing upper frame 21 is placed, at a position facing the outside X1 end of the resin cover material 212 of the existing upper frame 21, and foams in the thickness direction due to the heat of the flame when a fire occurs, so foams toward the part on the outside X1 end side of the resin cover material 212 of the upper existing upper frame 21. As a result, in the event of a fire, the heated foaming material 711 can seal the gap between the resin cover material 212 of the existing upper frame 21 and the new upper frame 31. Therefore, in the event of a fire, it is possible to prevent the heat of the flame from flowing in between the resin cover material 212 of the existing upper frame 21 and the new upper frame 31 from the outside side X1 or the inside side X2, or to prevent the heat of the flame from flowing out from between the resin cover material 212 of the existing upper frame 21 and the new upper frame 31 to the outside side X1 or the inside side X2.

[0037] The indoor side frame member 312 has a hollow portion 3121 with a generally rectangular cross section extending from the connecting member 313 toward the indoor side X2. A heated foaming material mounting recess 312b is formed on the outdoor side X1 of the upper surface 312a of the indoor side frame member 312. The heated foaming material mounting recess 312b is provided in the new upper frame 31 at a position facing the indoor side X2 end of the resin cover material 213 of the existing upper frame 21, and is formed to open upward and extend a predetermined length in the projection direction and to extend over the entire length of the new upper frame 31 in the longitudinal direction.

[0038] The heated foaming material 712 is attached to the heated foaming material attachment recess 312b. The heated foaming material 712 is formed with a predetermined thickness, has a width in the projection direction, and extends over the entire length of the new upper frame 31 in the longitudinal direction. As a result, the heated foaming material 712 is attached to the outside X1 of the upper surface 312a (projection surface) of the indoor side frame member 312 of the new upper frame 31. The heated foaming material 712 is attached to the upper surface 312a of the indoor side frame member 312 of the new upper frame 31 at a position facing the indoor side X2 end of the resin cover material 213 of the existing upper frame 21 in the projection direction so that the heated foaming material 712 foams toward the resin cover material 213 of the existing upper frame 21.

[0039] The heated foaming material 712 is attached to the upper surface 312a (the surface on the existing upper frame 21 side, the projected surface) of the indoor-side frame member 312 of the new upper frame 31 on the side of the space where the existing upper frame 21 is placed, at a position facing the indoor-side X2 end of the resin cover material 213 of the existing upper frame 21, and foams in the thickness direction due to the heat of the flames when a fire occurs, so foams toward the portion on the indoor-side X2 end side of the resin cover material 213 of the upper existing upper frame 21. As a result, in the event of a fire, the heated foaming material 712 can seal the gap between the resin cover material 213 of the existing upper frame 21 and the new upper frame 31. Therefore, in the event of a fire, it is possible to prevent the heat of the flame from flowing in between the resin cover material 213 of the existing upper frame 21 and the new upper frame 31 from the outside side X1 or the inside side X2, or to prevent the heat of the flame from flowing out from between the resin cover material 213 of the existing upper frame 21 and the new upper frame 31 to the outside side X1 or the inside side X2.

[0040] The upper surface 311a of the outdoor frame member 311 and the upper surface 312a of the indoor frame member 312 are all arranged on the same plane except for the heated foaming material mounting recesses 311b, 312b, and are arranged flush with each other in the projection direction of the newly installed upper frame 31. The heated foaming material mounting recesses 311b, 312b are formed recessed downward from the upper surface 311a of the outdoor frame member 311 and the upper surface 312a of the indoor frame member 312. The heated foaming materials 711, 712 and the connecting member 313 do not protrude above these upper surfaces 311a, 312a.

[0041] The outdoor frame member 311 has an outdoor extension 3113 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 3113 is disposed at the end of the outdoor side X1 of the new upper frame 31. The outdoor extension 3113 is disposed between the guide rails 314b and 314c in the projection direction. The outdoor extension 3113 also functions as a drainage groove that drains rainwater that has infiltrated the upper surface of the new upper frame 31 in the projection direction in the left-right direction without flowing into the indoor side X2.

[0042] An outdoor wall portion 315 extending upward in the viewing direction is provided integrally with the outdoor-most X1 portion of the outdoor extension portion 3113. 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 disposed so as to overlap, from the outdoor side X1, the outdoor side surface 211d of the guide rail 211c at the outdoor-most X1 position of the existing upper frame 21. As a result, the outdoor side surface 211d (outdoor portion) of the guide rail 211c of the existing upper frame 21 is disposed to be covered by the outdoor wall portion 315 (outdoor portion) of the new upper frame 31.

[0043] A decorative material 316 (covering material) made of a metal material such as aluminum is attached to the exterior wall portion 315 so as to be detachable from the exterior side X1. The decorative material 316 covers the exterior wall portion 315, and extends upward in the visibility direction beyond the existing upper frame 21, forming the visibility surface of the exterior side X1 of the newly installed 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 exterior side X1.

[0044] An attachment portion 318 for fixing the new upper frame 31 to the building skeleton 100 is integrally provided at the portion of the new upper frame 31 closest to the indoor side X2. The attachment portion 318 is arranged 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 of the indoor side X2 of the indoor side frame member 312 toward the indoor side X2.

[0045] At least a pair of protrusions 3181 extending in the longitudinal direction of the new upper frame 31 are provided on the upper surface of the mounting portion 318. The pair of protrusions 3181 protrude slightly upward from the upper surface of the mounting portion 318 and are arranged in parallel at a predetermined interval in the projection direction.

[0046] The new upper frame 31 of the new frame 3 assembled on all four sides into a rectangle is positioned on the inner periphery of the area extending from the existing upper frame 21 to the frame member 101. The exterior frame member 311 of the new upper frame 31 is positioned below the existing upper frame 21. The interior frame member 312 of the new upper frame 31 is positioned below the frame member 101.

[0047] As shown in Fig. 4, when a gap is formed between the newly-installed upper frame 31 and the frame member 101, a spacer member 301 is arranged to fill the gap. The spacer member 301 is composed of one or more sheets. The spacer member 301 is formed in a piece shape with a predetermined width in the longitudinal direction of the newly-installed upper frame 31, and is arranged at a plurality of locations spaced apart in the longitudinal direction of the newly-installed upper frame 31. The thickness of the sheets constituting the spacer member 301 and the number of layers of the sheets are appropriately set according to the size of the gap between the indoor side frame member 312 of the newly-installed upper frame 31 and the frame member 101, etc.

[0048] The portion of the upper surface 311a of the outdoor frame member 311 on the indoor side X2, the upper surface 312a of the indoor frame member 312, the mounting portion 318, and the connecting member 313 abut against and overlap the spacer member 301. The new upper frame 31 of the four-sided assembled new frame 3 is fixed to the building skeleton 100 on the indoor side X2 rather 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 and suppress deformation of the mounting portion 318 when the tightening torque of the screw SC1 is applied.

[0049] When the new frame 3 is attached to the inner periphery of the existing frame 2, there is no other member between the existing upper frame 21 and the new upper frame 31 for attaching the new upper frame 31 to the existing upper frame 21. 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.

[0050] Between the pair of guide rails 314a, 314b of the new upper frame 31, a rail-to-rail cover 3114 made of resin or wood-derived material is attached. The rail-to-rail cover 3114 is disposed across the lower surface of the outdoor frame member 311 and the lower surface side of the connecting member 313 so as to substantially shield the space between the guide rails 314a, 314b of the new upper frame 31. As shown in FIG. 4, the rail-to-rail cover 3114 has a double structure constituted by an upper plate portion 3114a, a lower plate portion 3114b disposed substantially parallel to the lower side of the upper plate portion 3114a, and a plurality of connecting plate portions 3114c connecting the upper plate portion 3114a and the lower plate portion 3114b. The rail-to-rail cover 3114 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 new upper frame 31.

[0051] As shown in Fig. 4, an angle member 319 made of resin or a material derived from wood is attached to the lower part of the end portion on the indoor side X2 of the indoor side frame member 312 of the newly installed upper frame 31. A cover material 3191 made of resin or a material derived from wood is integrally provided on the outdoor side X1 of the angle member 319. A decorative cover 51 made of resin is attached to the angle member 319 by screws 51a.

[0052] The decorative cover 51 extends continuously from the angle member 319 toward the room inside X2 and is disposed across the frame member 101. The decorative cover 51 fixed to the angle member 319 covers the newly installed upper frame 31 and the spacer member 301 between the angle member 319 and the frame member 101 from the room inside X2. The head of the screw SC1 is disposed inside the decorative cover 51. The boundary between the decorative cover 51 and the frame member 101 is shielded by a parting material 61 with an L-shaped cross section that is fixed to the frame member 101 by a screw 61a.

[0053] Next, the new lower frame 32 will be described.

[0054] As shown in FIG. 5, 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 front direction extending from the guide rail 221c of the existing lower frame 22 to the vicinity of the center of the front direction of the frame member 101. The new lower frame 32 is divided into two in the front direction into an exterior frame member 321 and an interior frame member 322. The exterior frame member 321 and the interior 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. A connecting member 323 is disposed between the exterior frame member 321 and the interior frame member 322. The exterior frame member 321 and the interior frame member 322 are integrally connected by the connecting member 323. The connecting member 323 is made of a member having thermal insulation properties such as resin, and blocks the transfer of heat from the exterior frame member 321 to the interior frame member 322 in the new lower frame 32.

[0055] The new lower frame 32 has guide rails 324a, 324b, and 324c that protrude upward in correspondence with the guide rails 314a, 314b, and 314c of the new upper frame 31. The guide rails 324a, 324b, and 324c extend over the entire length of the new lower frame 32 in the longitudinal direction. 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 of the indoor frame member 322. The guide rail 324b is disposed near the center of the upper surface of the outdoor frame member 321 in the forward direction. The guide rail 324c is disposed at the outermost side X1 on the upper surface of the outdoor frame member 321.

[0056] As shown in FIG. 5, the exterior frame member 321 has a hollow portion 3211 bulging downward so as to fit the shape of the existing lower frame 22 .

[0057] 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 having an upwardly recessed shape is formed in a portion of the lower surface of the indoor frame member 322 facing the outdoor side X1. Two step legs 3223 protruding downward are formed in a portion of the lower surface of the indoor frame member 322 facing the indoor side X2.

[0058] A height adjustment member 325 is attached to a portion of the outside side 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 of the lower stage 22e between the guide rails 221b, 221c of the existing lower frame 22. By adjusting the height adjustment member 325, the height of the outside side X1 of the new lower frame 32 is adjusted.

[0059] A decorative material 326 (cover material) made of a metal material such as aluminum is attached detachably from the outside surface X1 to the side surface of the new sill 32 on the outside surface X1. The decorative material 326 covers the height adjustment member 325, and extends downward in the visibility direction further than the existing sill 22, forming the visibility surface of the new sill 32. The decorative material 326 covers and conceals the sealing material 104 exposed between the existing sill 22 and the exterior wall material 102 from the outside surface X1.

[0060] 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 of the indoor side X2 of the indoor side frame member 322 toward the indoor side X2.

[0061] At least a pair of protrusions 3271 extending in the longitudinal direction of the new lower frame 32 are provided on the lower surface of the mounting portion 327. The pair of protrusions 3271 protrude slightly downward from the lower surface of the mounting portion 327 and are arranged in parallel at a predetermined interval in the projection direction.

[0062] In the new frame 3 assembled on all four sides into a rectangle, 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.

[0063] The mounting portion 327 abuts against the frame member 101. The new lower frame 32 in the four-sided assembled new frame 3 is fixed to the building skeleton 100 on the indoor side X2 closer to the existing lower frame 22 than the existing lower frame 22 by a screw SC2 that penetrates the mounting portion 327 from the indoor 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.

[0064] As shown in FIG. 5, the spacer member 302 and the connecting support plate 35 are attached from below to the step portion 3222 of the indoor side frame member 322 of the newly installed lower frame 32 with screws 352b, filling the gap with the frame member 101.

[0065] The spacer member 302 is composed of one or more sheets. The spacer member 302 is formed in a piece shape with a predetermined width in the longitudinal direction of the new lower frame 32, and is arranged in a plurality of locations spaced apart in the longitudinal direction of the new lower frame 32, or the spacer member 302 is arranged over the entire longitudinal length of the new lower frame 32. 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 portion 3222 and the size of the gap between the indoor frame member 322 of the new lower frame 32 and the frame member 101, etc.

[0066] The connecting support plate 35 is made of a metal plate material such as aluminum, and is formed in a plate shape extending in the front direction as shown in Fig. 5. As shown in Fig. 5, the connecting support plate 35 is formed in a stepped shape, and extends from the indoor frame member 322, passing under the connecting member 323, to the outdoor frame member 321. As shown in Fig. 1, the connecting support plate 35 is formed in a piece shape with a predetermined width in the left-right direction, and is positioned near the center of the remodeled fitting 1 in the left-right direction.

[0067] Near the center in the left-right direction, which is the length direction of the new lower frame 32 where the connecting support plate 35 is provided, the mounting part 327 (see FIG. 5) of the new lower frame 32 and the two step leg parts 3223 (see FIG. 5) protruding downward from the indoor side X2 part of the underside of the indoor side frame member 322 are cut out by a width corresponding to the width at which the connecting support plate 35 is disposed, in the length direction of the new lower frame 32. The connecting support plate 35 is provided near the center in the length direction of the new lower frame 32, at a location where the mounting part 327 (see FIG. 5) and the two step leg parts 3223 (see FIG. 5) of the new lower frame 32 are cut out and missing.

[0068] 5, the connecting support plate 35 connects the outdoor frame member 321 and the indoor frame member 322 in a state of supporting them from below, straddling the connecting member 323 that connects the outdoor frame member 321 and the indoor frame member 322 in the forward direction. The connecting support plate 35 has an outdoor upper plate 351 arranged on the outdoor side X1, an indoor lower plate 352 arranged on the indoor side X2 and at a position lower than the outdoor upper plate 351, and a downwardly inclined connecting plate 353 formed with a downward slope from the outdoor side X1 toward the indoor side X2, and connecting the outdoor upper plate 351 and the indoor lower plate 352.

[0069] The outdoor upper plate 351 is disposed on the outdoor side X1 and extends approximately horizontally in the forward direction. The outdoor upper plate 351 is disposed below the underside 321b of the outdoor frame member 321 at a portion adjacent to the connecting member 323, and abuts against the underside 321b of the outdoor frame member 321 at a portion adjacent to the connecting member 323, supporting the outdoor frame member 321 from below. The outdoor upper plate 351 is fixed to the lower part of the outdoor side X2 of the outdoor frame member 321 of the new lower frame 32 by screws 351a that penetrate the outdoor upper plate 351 and the lower part of the outdoor side X2 of the outdoor frame member 321 of the new lower frame 32.

[0070] The indoor side lower plate 352 is connected to the indoor side X2 of the outdoor side upper plate 351 via a downwardly inclined connecting plate 353, and extends approximately horizontally in the forward direction at a position lower than the outdoor side upper plate 351. The indoor side lower plate 352 protrudes toward the indoor side X2 beyond the end face of the indoor side X2 of the indoor side frame member 322 of the newly-installed lower frame 32, and extends to the same position as the tip of the mounting portion 327 of the newly-installed lower frame 32.

[0071] The indoor side lower plate 352 has an indoor side X2 portion fixed to the building structure 100 on the indoor side X2 rather than the existing lower frame 22 by a screw 352a penetrating the indoor side lower plate 352 from diagonally above. The screw 352a fixing the indoor side X2 portion of the indoor side lower plate 352 is a screw of similar size as the screw SC2 fixing the mounting portion 327 of the newly-installed lower frame 32 when viewed in the left-right direction, and is arranged at approximately the same position and at approximately the same inclination angle. The indoor side lower plate 352 has an outdoor side X1 portion fixed to the lower part of the indoor side frame member 322 by a screw 352b penetrating the indoor side lower plate 352, the spacer member 302, and the step portion 3222 of the indoor side frame member 322 from below.

[0072] Even if the resin-made connecting member 323 is burned in the event of a fire, the connecting support plate 35 connects the outdoor frame member 321 and the indoor frame member 322 and is formed of a metal plate material, so that separation between the outdoor frame member 321 and the indoor frame member 322 can be suppressed. As a result, even if the resin-made connecting member 323 is burned in the event of a fire, the strength of the newly-installed lower frame 32 can be maintained.

[0073] Furthermore, the connecting support plate 35 is fixed to the building structure 100 at the indoor side X2 portion by the screw 352a, and supports the indoor side frame member 322 of the newly-installed lower frame 32 from below at the outdoor side X1 portion. As a result, since the connecting support plate 35 is fixed to the building structure 100 at the indoor side X2 portion by the screw 352a, the connecting support plate 35 can support the outdoor side frame member 321 of the newly-installed lower frame 32 at the outdoor side X1 portion in a state where it is prevented from sagging downward.

[0074] When the new frame 3 is attached to the inner periphery of the existing frame 2, there is no other member between the existing lower frame 22 and the new lower frame 32 for attaching the new lower frame 32 to the existing lower frame 22. 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.

[0075] 5, a heated foaming material mounting recess 3231 is formed on the underside of the connecting member 323 disposed between the outdoor frame member 321 and the indoor frame member 322. The heated foaming material mounting recess 3231 is attached to the new lower frame 32 at a position facing the resin cover material 222 of the existing lower frame 22, and is formed to open downward, extend a predetermined length in the projection direction, and extend over the entire length of the new lower frame 32 in the longitudinal direction.

[0076] The heated foaming material 721 is attached to the heated foaming material attachment recess 3231. The heated foaming material 721 is formed with a predetermined thickness, has a width in the projection direction, and extends over the entire length of the new lower frame 32 in the longitudinal direction. As a result, the heated foaming material 721 is attached to the lower surface (projection surface) of the connecting member 323 between the outdoor-side frame member 321 and the indoor-side frame member 322 of the new lower frame 32. The heated foaming material 721 is attached to the lower surface of the connecting member 323 arranged between the outdoor-side frame member 321 and the indoor-side frame member 322 of the new lower frame 32 at a position facing the resin cover material 222 of the existing lower frame 22 in the projection direction so as to foam toward the resin cover material 222 of the existing lower frame 22.

[0077] The heated foaming material 721 is attached to the underside of the connecting member 323 between the outdoor frame member 321 and the indoor frame member 322 at a position facing the resin cover material 222 of the existing lower frame 22, and foams in the thickness direction due to the heat of the flame when a fire occurs, so that it foams toward the resin cover material 222 of the existing lower frame 22. As a result, when a fire occurs, the heated foaming material 721 can seal the gap between the resin cover material 222 of the existing lower frame 22 and the new lower frame 32. Therefore, when a fire occurs, it is possible to suppress the flow of heat of the flame from the outdoor side X1 or the indoor side X2 between the resin cover material 222 of the existing lower frame 22 and the new lower frame 32, or to suppress the flow of heat of the flame from the gap between the resin cover material 222 of the existing lower frame 22 and the new lower frame 32 to the outdoor side X1 or the indoor side X2.

[0078] A cover material 3213 made of resin or wood-derived material is attached between the pair of guide rails 324a, 324b of the new lower frame 32. The cover material 3213 covers the side surface of the guide rail 324b on the indoor side X2 and extends toward the indoor side X2 to cover the upper surface of the outdoor frame member 321 and the upper surface side of the connecting member 323.

[0079] As shown in Fig. 5, an angle member 328 made of resin or wood-derived material is attached to the indoor side frame member 322 of the newly installed lower frame 32. A cover material 3281 made of resin or wood-derived material is integrally provided on the outdoor side X1 of the angle member 328. A resin decorative cover 52 is attached to the angle member 328 by a screw 52a.

[0080] The decorative cover 52 extends continuously from the angle member 328 toward the interior side X2 and is disposed across the frame member 101. The decorative cover 52 fixed to the angle member 328 covers the newly installed sill 32 between the angle member 328 and the frame member 101 from the interior side X2. The heads of the screws SC2 and 352a are disposed inside the decorative cover 52. The boundary between the decorative cover 52 and the frame member 101 is shielded by a parting material 62 with an L-shaped cross section that is fixed to the frame member 101 by a screw 62a.

[0081] Next, the new vertical frames 33 and 34 will be described. The left and right new vertical frames 33 and 34 have substantially the same structure except that they are symmetrical. The left and right new vertical frames 33 and 34 will be described individually when they have different configurations that require explanation.

[0082] 6 and 7, the new vertical frames 33, 34 extend in the up-down direction along the length direction of the existing vertical frames 23, 24. The new vertical frames 33, 34 have a length in the front direction extending from the ends of the existing vertical frames 23, 24 on the outside side X1 to near the center in the front direction of the frame member 101. The new vertical frames 33, 34 are metal frame members, and are each made of an extruded shape extruded in the length direction from a metal material such as aluminum.

[0083] 6 and 7, the new vertical frames 33, 34 have hollow portions 331, 341 with a generally rectangular cross section arranged on the outdoor side X1, and hollow portions 332, 342 with a generally rectangular cross section arranged on the indoor side X2. The outer surfaces 331a, 341a on the left and right sides of the portions corresponding to the hollow portions 331, 341 of the new vertical frames 33, 34 are provided with heated foaming material mounting recesses 331b, 341b arranged on the outdoor side X1.

[0084] As shown in Fig. 6 and Fig. 7, the heated foaming material mounting recesses 331b, 341b are located at different positions in the projection direction in the new vertical frames 33, 34. As shown in Fig. 6, the heated foaming material mounting recess 331b is located at a position on the outdoor side X1 of the hollow portion 331 of the new vertical frame 33, closer to the outdoor side X1 than the position facing the end of the resin cover material 233 of the existing vertical frame 23 on the outdoor side X1. As shown in Fig. 7, the heated foaming material mounting recess 341b is located at a position facing the end of the resin cover material 242 of the existing vertical frame 24 on the indoor side X2 of the hollow portion 341 of the new vertical frame 34.

[0085] As shown in Fig. 6 and Fig. 7, heated foaming material mounting recesses 332b, 342b are formed on the outside X1 of the outer surfaces 332a, 342a on the left and right sides of the portions corresponding to the hollow portions 332, 342 of the new vertical frames 33, 34. As shown in Fig. 6 and Fig. 7, the heated foaming material mounting recess 332b is provided in the new vertical frame 33 at a position facing the end of the resin cover material 232 of the existing vertical frame 23 on the inside X2. As shown in Fig. 7, the heated foaming material mounting recess 342b is provided in the new vertical frame 34 at a position facing the end of the resin cover material 242 of the existing vertical frame 24 on the inside X2.

[0086] The heated foaming material mounting recesses 331b, 332b, 341b, and 342b are formed to open outward in the left-right direction, extend a predetermined length in the projection direction, and extend over the entire length of the newly-installed vertical frame 33. The heated foaming materials 731, 732, 741, and 742 are mounted in the heated foaming material mounting recesses 331b, 332b, 341b, and 342b. The heated foaming materials 731, 732, 741, and 742 are formed to a predetermined thickness, have a width in the projection direction, and extend over the entire length of the newly-installed vertical frame 33 in the projection direction.

[0087] As a result, as shown in Figure 6, a heated foaming material 731 is attached to the outer surface 331a (visible surface) facing outward in the left-right direction on the outside side X1 of the hollow portion 331 of the newly installed vertical frame 33 on the left side, and a heated foaming material 732 is attached to the outer surface 332a (visible surface) facing outward in the left-right direction on the outside side X1 of the hollow portion 332 of the newly installed vertical frame 33.

[0088] As shown in Fig. 6, the heated foaming material 731 is attached to the outer surface 331a on the outside in the left-right direction of the outside X1 of the hollow part 331 of the new vertical frame 33 at a position on the outside X1 side of the new vertical frame 33, which is closer to the outside X1 side than the position facing the end of the outside X1 side of the resin cover material 233 of the existing vertical frame 23 in the projection direction, so that the heated foaming material 731 foams toward the space side where the resin cover material 233 of the existing vertical frame 23 is arranged. Also, the heated foaming material 732 is attached to the outer surface 332a on the outside in the left-right direction of the outside X1 of the hollow part 332 of the new vertical frame 33 at a position facing the end of the inside X2 side of the resin cover material 232 of the existing vertical frame 23, so that the heated foaming material 732 foams toward the resin cover material 232 of the existing vertical frame 23.

[0089] Also, as shown in Figure 7, a heated foaming material 741 is attached to the outer surface 341a (visible surface) facing outward in the left-right direction on the indoor side X2 of the hollow portion 341 of the newly installed vertical frame 34 on the right side, and a heated foaming material 742 is attached to the outer surface 342a (visible surface) facing outward in the left-right direction on the outdoor side X1 of the hollow portion 342 of the newly installed vertical frame 34.

[0090] 7, the heated foaming material 741 is attached to the outer surface 341a on the outside in the left-right direction of the outside X1 of the hollow part 341 of the new vertical frame 34 at a position facing the end part on the outside X1 side of the resin cover material 242 of the existing vertical frame 24 in the projection direction so as to foam toward the resin cover material 242 of the existing vertical frame 24. Also, the heated foaming material 742 is attached to the outer surface 342a on the outside in the left-right direction of the outside X1 of the hollow part 342 of the new vertical frame 34 at a position facing the end part on the inside X2 side of the resin cover material 242 of the existing vertical frame 24.

[0091] As shown in Figures 6 and 7, the heated foaming materials 731, 732, 741, 742 are attached to the outer outer surfaces 331a, 332a, 341a, 342a (the surfaces on the existing vertical frames 23, 24 side, the visible surfaces) on the left and right sides of the space where the existing vertical frame 23 of the newly installed vertical frames 33, 34 is placed, at positions where they can foam toward the space where the resin cover materials 233, 232, 242 of the existing vertical frames 23, 24 are placed.When a fire occurs, the heat of the flames causes the materials to foam in the thickness direction, so that they foam toward the resin cover materials 233, 232, 242 of the existing vertical frames 23, 24 on the left and right sides.

[0092] As a result, in the event of a fire, the heated foam materials 731, 732, 741, 742 can seal the gap between the resin cover materials 233, 232, 242 of the existing vertical frames 23, 24 and the new vertical frames 33, 34. Therefore, in the event of a fire, it is possible to suppress the heat of a flame from flowing in between the resin cover materials 233, 232, 242 of the existing vertical frames 23, 24 and the new vertical frames 33, 34 from the outside X1 or the inside X2, or to suppress the heat of a flame from flowing out from between the resin cover materials 233, 232, 242 of the existing vertical frames 23, 24 and the new vertical frames 33, 34 to the outside X1 or the inside X2.

[0093] As shown in Fig. 6 and Fig. 7, the outer side surfaces 331a, 341a corresponding to the hollow portions 331, 341 and the outer side surfaces 332a, 342a corresponding to the hollow portions 332, 342 are all arranged on the same plane except for the portions where the heated foaming material mounting recesses 331b, 332b, 341b, 342b and other mounting recesses are provided, and are arranged flush with each other in the projection direction of the newly installed vertical frame 33. The heated foaming material mounting recesses 331b, 332b, 341b, 342b and other mounting recesses are formed recessed inward in the left-right direction from the outer side surfaces 331a, 332a, 341a, 342a of the newly installed vertical frames 33, 34. The heated foaming materials 731, 732, 741, 742 do not protrude outward from these outer side surfaces 331a, 332a, 341a, 342a.

[0094] The exterior wall portions 334, 344 extending outward in the find direction are integrally provided at the outermost X1 portion of the new vertical frames 33, 34. The exterior wall portions 334, 344 protrude further outward in the find direction than the outer surfaces 331a, 332a, 341a, 342a of the hollow portions 331, 341 and the hollow portions 332, 342, and are arranged so as to overlap the end faces 23x, 24x of the outermost X1 outward protruding pieces 23b, 24b of the existing vertical frames 23, 24 from the exterior X1. As a result, the end faces 23x, 24x (outdoor portion) of the outer protruding pieces 23b, 24b of the existing vertical frames 23, 24 are covered and arranged by the exterior wall portions 334, 344 (outdoor portion) of the new vertical frames 33, 34.

[0095] Decorative materials 335, 345 (covering materials) made of a metal material such as aluminum are attached to the exterior wall portions 334, 344 in a manner that allows them to be detached from the exterior side X1. The decorative materials 335, 345 cover the exterior wall portions 334, 344, and extend outward in the visibility direction beyond the existing vertical frames 23, 24 to form the visibility surface of the new vertical frames 33, 34. The decorative materials 335, 345 cover and conceal the sealing material 104 exposed between the existing vertical frames 23, 24 and the exterior wall material 102 from the exterior side X1.

[0096] Mounting portions 336, 346 used to fix the new vertical frames 33, 34 to the building skeleton 100 are integrally provided at the locations of the new vertical frames 33, 34 closest to the indoor side X2. The mounting portions 336, 346 extend in a plate shape from the outer left and right portions of the end faces of the new vertical frames 33, 34 on the indoor side X2 toward the indoor side X2.

[0097] At least a pair of protrusions 3361, 3461 extending in the length direction of the new vertical frames 33, 34 are provided on the outer surface on the outer left-right direction of the mounting parts 336, 346. The pair of protrusions 3361, 3461 protrude slightly outward from the outer surface on the outer left-right direction of the mounting parts 336, 346 and are arranged in parallel with each other at a predetermined interval in the projection direction.

[0098] A pair of new vertical frames 33, 34 on the left and right sides of 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 frames 23, 24 to the frame member 101. As shown in Figs. 6 and 7, when a gap is formed between the new vertical frame 33 and the frame member 101, the spacer members 303, 304 are arranged to fill the gap. The spacer members 303, 304 are composed of one or more sheets. The spacer members 303, 304 are formed in pieces having a predetermined width in the longitudinal direction of the new vertical frames 33, 34, and are arranged at a plurality of positions spaced apart in the longitudinal direction of the new vertical frames 33, 34. The thickness of the sheets constituting the spacer members 303, 304 and the number of layers of the sheets are appropriately set according to the size of the gap between the new vertical frames 33, 34 and the frame member 101, etc.

[0099] The outer surfaces 332a, 342a and the mounting parts 336, 346 of the new vertical frames 33, 34 abut against and overlap the spacer members 303, 304. The new vertical frames 33, 34 of the four-sided new frame 3 are fixed to the building skeleton 100 on the indoor side X2, closer to the existing vertical frames 23, 24, by screws SC3, SC4 that penetrate the mounting parts 336, 346 and the spacer members 303, 304 from the indoor side X2. The screws SC3, SC4 penetrate between a pair of protrusions 3361, 3461 of the mounting parts 336, 346. The pair of protrusions 3361, 3461 abut against the spacer members 303, 304, suppressing deformation of the mounting parts 336, 346 when the fastening torque of the screws SC3, SC4 is applied.

[0100] When the new frame 3 is attached to the inner periphery of the existing frame 2, there is no other member between the existing vertical frames 23, 24 and the new vertical frames 33, 34 for attaching the new vertical frames 33, 34 to the existing vertical frames 23, 24. The new vertical frames 33, 34 are arranged so as to directly face the inner periphery of the existing vertical frames 23, 24 on the left and right. Therefore, the new vertical frames 33, 34 can be arranged as close as possible to the existing vertical frames 23, 24. Since the new vertical frames 33, 34 are not fixed to the existing vertical frames 23, 24, even if distortion or the like occurs in the existing vertical frames 23, 24, they can be attached without being affected by the state of the distortion. Since the screws SC3, SC4 do not come into contact with the existing vertical frames 23, 24, heat is not transferred between the existing vertical frames 23, 24 and the new vertical frames 33, 34 via the screws SC3, SC4.

[0101] 6 and 7, angle members 338, 348 made of resin or wood-derived material are attached to the new vertical frames 33, 34. Resin decorative covers 53, 54 are attached to the angle members 338, 348 by screws 53a, 54a.

[0102] The decorative covers 53, 54 extend continuously from the angle members 338, 348 toward the room side X2 and are disposed across the frame member 101. The decorative covers 53, 54 fixed to the angle members 338, 348 cover the newly installed vertical frames 33, 34 and the spacer members 303, 304 between the angle members 338, 348 and the frame member 101 from the room side X2. The heads of the screws SC3, SC4 are disposed inside the decorative covers 53, 54. The boundaries between the decorative covers 53, 54 and the frame member 101 are shielded by parting materials 63, 64 with an L-shaped cross section that are fixed to the frame member 101 by screws 63a, 64a.

[0103] A resin cover material 333 is provided on the inner surface of the indoor side X2 portion of the new vertical frame 33. The cover material 333 is disposed adjacent to the outdoor side X1 of the angle member 338, and covers the inner surface of the new vertical frame 33 on the inner side X2 of the new vertical frame 33 from the angle member 338 to the inside in the left-right direction.

[0104] Next, the screens 41 and 42 will be described.

[0105] As shown in Figures 2 and 3, the shoji screens 41, 42 are constructed by placing one or more panel members 414, 424 made of glass or the like inside a rectangular frame body consisting of an upper frame 411, 421, a lower frame 412, 422, and a pair of left and right vertical frames 413, 423.

[0106] 2, the upper frame 411, 421 is composed of an upper frame body 4111, 4211 made of an extrusion material extruded in the longitudinal direction from a metal material such as aluminum, and a cover member 4112, 4212 made of a resin or wood-derived material that covers the side surface of the upper frame body 4111, 4211 on the indoor side X2. The upper frame body 4111, 4211 is provided below the guide rails 314a, 314b of the newly installed upper frame 31.

[0107] As shown in Fig. 2, the lower frame 412, 422 is composed of a lower frame body 4121, 4221 made of an extrusion material extruded in the length direction from a metal material such as aluminum, and a cover member 4122, 4222 made of a resin or wood-derived material that covers the side surface of the lower frame body 4121, 4221 on the indoor side X2. The lower frame body 4121, 4221 is provided on the upper part of the guide rails 324a, 324b of the newly installed lower frame 32. A door roller 4123, 4223 is provided inside the lower frame body 4121, 4221 and is placed on the guide rails 324a, 324b so as to be able to roll.

[0108] As shown in FIG. 3, the vertical frames 413, 423 are composed of vertical frame main bodies 4131, 4231 made of extruded shapes extruded longitudinally from a metal material such as aluminum, and cover members 4132, 4232 made of resin or wood-derived material that cover the indoor side X2 side of the vertical frame main bodies 4131, 4231.

[0109] According to the remodeling fitting 1 of the present embodiment, when the new frame 3 is attached to the inner periphery of the existing frame 2, no member for attaching the new frame 3 to the existing frame 2 is interposed between the existing frame 2 and the new frame 3, so the new frame 3 can be arranged as close as possible to the existing frame 2. Therefore, it is possible to construct a remodeling fitting 1 with a dimension of the frame member in the viewing direction as compact as possible. Since the new frame 3 is not fixed to the existing frame 2, it can be attached without being affected by the distortion state of the existing frame 2. Therefore, the workability of the new frame 3 is improved. Since the screws SC1, SC2, SC3, and SC4, which are fixing members, do not come into contact with the existing frame 2, heat is not transferred between the existing frame 2 and the new frame 3 through the screws SC1, SC2, SC3, and SC4, and the insulation is excellent.

[0110] The renovation fitting 1 of this embodiment has the following effects.

[0111] The remodeling fixture 1 of this embodiment is attached to an opening of a building skeleton 100 and includes an existing frame 2 (existing upper frame 21, existing lower frame 22, existing vertical frames 23, 24) having a metal frame body 211, 221, 231, 241 and a resin cover material 212, 213, 222, 232, 233, 242, and a resin cover material 212, 213, 222, 232, 233, 242 attached to the inner periphery of the existing frame 2 (existing upper frame 21, existing lower frame 22, existing vertical frames 23, 24). and heated foaming materials 711, 712, 721, 731, 732, 741, 742 that are attached to the new frame 3 (new upper frame 31, new lower frame 32, new vertical frames 33, 34) so ​​as to foam toward the resin cover materials 212, 213, 222, 232, 233, 242.

[0112] As a result, in the event of a fire, the heated foam materials 711, 712, 721, 731, 732, 741, 742 can seal the gap between the resin cover materials 212, 213, 222, 232, 233, 242 of the existing frame 2 (existing upper frame 21, existing lower frame 22, existing vertical frames 23, 24) and the new frame 3 (new upper frame 31, new lower frame 32, new vertical frames 33, 34). Therefore, in the event of a fire, it is possible to prevent the heat of a flame from flowing in from the outside X1 or the inside X2 between the resin cover materials 212, 213, 222, 232, 233, 242 of the existing frame 2 (existing upper frame 21, existing lower frame 22, existing vertical frames 23, 24) and the new frame 3 (new upper frame 31, new lower frame 32, new vertical frames 33, 34), or it is possible to prevent the heat of a flame from flowing out from between the resin cover materials 212, 213, 222, 232, 233, 242 of the existing frame 2 (existing upper frame 21, existing lower frame 22, existing vertical frames 23, 24) and the new frame 3 (new upper frame 31, new lower frame 32, new vertical frames 33, 34) to the outside X1 or the inside X2.

[0113] In this embodiment, the heated foam materials 711, 712, 721, 732, 741, and 742 are attached to positions facing the resin cover materials 212, 213, 222, 232, and 242 in the new frame 3 (new upper frame 31, new lower frame 32, and new vertical frames 33 and 34). As a result, when the existing frame 2 (existing upper frame 21, existing lower frame 22, existing vertical frames 23, 24) is a composite structure having resin cover materials 212, 213, 222, 232, 242, even if the resin cover materials 212, 213, 222, 232, 242 melt, the heated foaming materials 711, 712, 721, 732, 741, 742 will foam, so that the flow of heat from a flame in or out between the resin cover materials 212, 213, 222, 232, 242 of the existing frame 2 (existing upper frame 21, existing lower frame 22, existing vertical frames 23, 24) and the new frame 3 (new upper frame 31, new lower frame 32, new vertical frames 33, 34) can be further prevented.

[0114] In addition, in this embodiment, the heated foam materials 711, 712, 721, 732, 741, 742 are attached in the forward direction at positions facing at least the outside X1 end or the inside X2 end of the resin cover materials 212, 213, 222, 232, 242 of the existing frame 2 (existing upper frame 21, existing lower frame 22, existing vertical frames 23, 24). As a result, by simply providing the heated foam materials 711, 712, 721, 732, 741, 742 at the necessary locations facing the ends on the outside X1 side or the inside X2 side of the resin cover materials 212, 213, 222, 232, 242 of the existing frame 2 (existing upper frame 21, existing lower frame 22, existing vertical frames 23, 24) assuming a case in which the resin cover materials 212, 213, 222, 232, 242 of the existing frame 2 (existing upper frame 21, existing lower frame 22, existing vertical frames 23, 24) melt, it is possible to suppress the heat of the flame from flowing in or out of the outside X1 or inside X2, thereby reducing the amount of heated foam materials 711, 712, 721, 732, 741, 742 used.

[0115] In this embodiment, the exterior side surface 211d (outdoor portion) of the guide rail 211c of the existing upper frame 21 is arranged to be covered by the exterior wall portion 315 (outdoor portion) of the new upper frame 31. The end faces 23x, 24x (outdoor portion) of the outward protruding pieces 23b, 24b of the existing vertical frames 23, 24 are arranged to be covered by the exterior wall portions 334, 344 (outdoor portion) of the new vertical frames 33, 34.

[0116] As a result, when a fire breaks out on the outdoor side X1, the heat of the flame from the outdoor side X1 is directly transmitted to the new frame 3 (new upper frame 31, new vertical frames 33, 34), and is transmitted to the resin cover materials 212, 213, 232, 233, 241, 242 of the existing frame 2 (existing upper frame 21, existing vertical frames 23, 24) via the new frame 3 (new upper frame 31, new vertical frames 33, 34). Therefore, the heat of the flame from the outdoor side X1 is transmitted faster to the heating foam materials 711, 712, 731, 732, 741, 742 attached to the new frame 3 (new upper frame 31, new vertical frames 33, 34) than to the resin cover materials 212, 213, 232, 233, 241, 242 of the existing frame 2 (existing upper frame 21, existing vertical frames 23, 24). Therefore, the heated foaming materials 711, 712, 731, 732, 741, 742 tend to foam faster than the resin cover materials 212, 213, 232, 233, 241, 242 of the existing frame 2 (existing upper frame 21, existing vertical frames 23, 24) melt. Therefore, in the event of a fire, the heated foaming materials 711, 712, 731, 732, 741, 742 can be foamed faster than the resin cover materials 212, 213, 232, 233, 241, 242 of the existing frame 2 (existing upper frame 21, existing vertical frames 23, 24) melt, and the gap between the resin cover materials 212, 213, 232, 233, 242 of the existing frame 2 (existing upper frame 21, existing vertical frames 23, 24) and the new frame 3 (new upper frame 31, new vertical frames 33, 34) can be sealed. This improves fire resistance.

[0117] 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 the two shoji screens 41 and 42 described above, but may have three or more shoji screens, or may be a single-sliding window with only one shoji screen. Furthermore, the remodeling fixture of the present disclosure may be a sliding window, a fixed window, a sash window, an outward-tilting window, an inward-tilting window, or a casement window.

[0118] In the above-described embodiment, the heated foaming material is provided in each of the new upper frame 31, the new lower frame 32, and the new vertical frames 33 and 34 that constitute the new frame 3, but this is not limited to this. It is sufficient that the heated foaming material is provided in at least one of the upper, lower, left, and right frame members that constitute the new frame. [Explanation of symbols]

[0119] 1 Renovated fittings, 2 Existing frame, 3 New frame, 21 Existing upper frame (existing frame), 22 Existing lower frame (existing frame), 23,24 Existing vertical frame (existing frame), 23x,24x End face (outside part), 31 New upper frame (new frame), 32 New lower frame (new frame), 33,34 New vertical frame (new frame), 100 Building structure, 211 Metal frame body (metal part), 211d Outside side (outside part), 212 Resin cover material (resin part), 213 Resin cover material (resin part), 221 Metal frame body (metal part), 222 Resin cover material (resin part), 231,241 Metal frame body (metal part), 232,233,242 Resin cover material (resin part), 315 Outdoor wall part (outdoor part), 334, 344 Outdoor wall part (outdoor part), 711, 712, 721, 731, 732, 741, 742 Heat foaming material

Claims

1. an existing frame attached to an opening in a building structure and having a metal part and a resin part; A new frame is attached to the inner periphery side of the existing frame; A renovation fixture comprising: a heated foaming material that is attached to the new frame so that it foams toward the resin portion.

2. The metal portion is constituted by a frame, The renovation fixture according to claim 1 , wherein the resin part is attached to the inner periphery side of the frame of the metal part.

3. The remodeling fixture according to claim 1 or 2, wherein the heated foaming material is attached to a position facing the resin portion in the newly constructed frame.

4. The remodeling fixture according to claim 3 , wherein the heated foaming material is attached at a position facing at least an outside end or an inside end of the resin part in the prospective direction.

5. The renovation fixture according to claim 1 or 2, wherein at least a portion of the exterior side portion of the existing frame is covered by the exterior side portion of the newly constructed frame.

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