Renovation fitting

Abstract

To provide a renovation fitting whose contact portion between members can be effectively protected from fire.SOLUTION: A renovation fitting 1 includes an existing frame 2 provided in an opening 11 of a building skeleton 100, a new frame 3 fixed to an inner peripheral side of the existing frame 2, and an attachment 4 disposed between the existing frame 2 and the new frame 3 to fix the new frame 3 to the existing frame 2. The renovation fitting 1 includes indoor-side contact portions 814 and 822 at which the existing frame 2 and the attachment 4 come into contact with each other on the indoor side, outdoor-side contact portions 811, 821, and 83 at which the existing frame and the attachment come into contact with each other on the outdoor side, and a heating foaming material 6 that is provided at a position away from a position corresponding to indoor-side contact portions 814 and 822 in the new frame 3 to the indoor side in the depth direction and / or a position corresponding to the outdoor-side contact portions 811, 821, and 83 to the outdoor side and foams toward the attachment 4.SELECTED DRAWING: Figure 4A

Description

[Technical field]

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

[0002] Conventionally, a cover construction method has been adopted as a method for renovating an opening in a building skeleton by remodeling or the like, in which a new fixture is installed in the opening. In the cover construction method, a renovation fixture is known that includes an existing frame installed in the opening in the building skeleton, a new frame placed on the inner periphery of the existing frame, and an attachment placed between the existing frame and the new frame. This new frame is provided with a heat foaming material that foams in the event of a fire or the like to protect the fixture, and the heat foaming material is positioned in a position facing the contact portion where the existing frame and the attachment come into contact (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-198048 A Summary of the Invention [Problem to be solved by the invention]

[0004] If the heated foaming material is placed near the contact point between the existing frame and the attachment, when the exterior or interior surface of the renovated fixture is exposed to heat in a fire, the timing when the heated foaming material foams and the timing when the heat reaches the contact point and the contact point is exposed to heat are close. For this reason, it is desirable to further improve the fire prevention effect. [Means for solving the problem]

[0005] The present disclosure relates to a renovation fitting comprising an existing frame installed in an opening of a building structure, a new frame fixed to the inner periphery of the existing frame, and an attachment arranged between the existing frame and the new frame and fixing the new frame to the existing frame, the renovation fitting having an indoor abutment portion where the existing frame and the attachment abut each other on the indoor side, and an outdoor abutment portion where the existing frame and the attachment abut each other on the outdoor side, and a heated foaming material that is installed in a position away from a position corresponding to the indoor abutment portion on the new frame to either the indoor side in the prospective direction, or the outdoor side from a position corresponding to the outdoor abutment portion, or both, and that foams toward the attachment. [Brief description of the drawings]

[0006] [Figure 1] FIG. 2 is a front view of the renovated fixture of this embodiment. [Diagram 2] 2 is a cross-sectional view taken along line AA in FIG. 1. [Diagram 3] FIG. 2 is a partial cross-sectional view taken along line BB in FIG. [Figure 4A] This is a partial vertical cross-sectional view of the upper part of the renovated building fixture of this embodiment. [Figure 4B] A partial vertical cross-sectional view of the lower part of the renovated building fixture of this embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the drawings. As shown in Fig. 1, a remodeling fitting 1 of this embodiment is installed in an opening 11 of a building frame 100 of a building such as an apartment building. Fig. 1 shows the remodeling fitting 1 as viewed from the inside of the room. The remodeling fitting 1 is formed by renovating an existing frame 2 that has already been installed by attaching a new frame 3 to it.

[0008] In this specification, "front view direction" refers to the direction in which the faces of the facing materials of the shoji screens 71, 72 of the remodeled fitting 1 placed in the opening 11 formed in the wall of the building skeleton 100 extend. "Outside of the front view direction" refers to the outer periphery of the opening 11, and "inside of the front view direction" refers to the inner periphery of the opening 11. "Front view surface" refers to each of the surfaces of the remodeled fitting 1 facing the outside and the inside of the room. The horizontal direction in the front view direction of the remodeled fitting 1 is the left-right direction.

[0009] In this specification, the "prospect direction" refers to the thickness direction of the above-mentioned panel material (i.e., the depth direction). The "prospect direction" is also the indoor / outdoor direction. The "prospect surface" refers to the surface of the renovated fitting 1 that extends in the indoor / outdoor direction. In the drawings, the outdoor side of the prospective direction of the renovated fitting 1 is the outdoor side X1, and the indoor side of the prospective direction of the renovated fitting 1 is the indoor side X2.

[0010] As shown in Fig. 1, the remodeled fitting 1 is constructed by attaching a new frame 3 via an attachment 4 (see Figs. 2 to 4B) to the inner periphery of an existing frame 2 installed in an opening 11 of a building skeleton 100. The remodeled fitting 1 has the existing frame 2, the new frame 3, the attachment 4, an abutment part 8, and a heat-foaming material 6. Shoji screens 71, 72 are placed inside the new frame 3 so that they can be opened and closed.

[0011] The existing frame 2 is a frame body that is configured integrally with or separately from the window frame 10 and is provided in the opening 11. The existing frame 2 is formed in a rectangular frame shape. The existing frame 2 is configured from shaped materials made of aluminum, aluminum-resin composite, or resin. The existing frame 2 has an existing upper frame 21, an existing lower frame 22, and a pair of existing vertical frames 23 on the left and right.

[0012] The existing upper frame 21 is a long member extending along the front direction above the opening 11. The existing lower frame 22 is a long member extending along the front direction below the opening 11. The pair of existing vertical frames 23 are long members extending in the up-down direction at both ends of the opening 11 in the front direction.

[0013] The new frame 3 is fixed to the inner periphery of the existing frame 2 via attachments 4 (see Figures 2 to 4B). The new frame 3 is formed into a rectangular frame shape. The dimension of the new frame 3 in the prospective direction is larger than the dimension of the existing frame 2 in the prospective direction. The new frame 3 is made of aluminum shaped material. The new frame 3 has a new upper frame 31, a new lower frame 32, and a pair of new vertical frames 33 on the left and right.

[0014] The new upper frame 31 is a long member extending along the front direction above the opening 11. The new lower frame 32 is a long member extending along the front direction below the opening 11. The pair of new vertical frames 33 are long members extending in the up-down direction at both ends of the opening 11 in the front direction.

[0015] 2 to 4B, the attachment 4 is a member disposed between the existing frame 2 and the new frame 3, and used to fix the new frame 3 to the existing frame 2. The attachment 4 has two members, an attachment body 40 and a cover member 50. The attachment body 40 is fixed to the interior side X2 of the existing frame 2.

[0016] The attachment body 40 has an upper frame attachment body 41 (see Fig. 2 and Fig. 4A), a lower frame attachment body 42, and a pair of left and right vertical frame attachment bodies 43 (see Fig. 3). The upper frame attachment body 41, the lower frame attachment body 42, and the pair of left and right vertical frame attachment bodies 43 are each made of, for example, aluminum shaped material.

[0017] The upper frame attachment body 41, the lower frame attachment body 42, and the pair of left and right vertical frame attachment bodies 43 are respectively arranged along the longitudinal direction of the existing upper frame 21, the existing lower frame 22, and the existing vertical frame 23. The upper frame attachment body 41, the lower frame attachment body 42, and the pair of left and right vertical frame attachment bodies 43 may be arranged at intervals in the longitudinal direction of the existing upper frame 21, the existing lower frame 22, and the existing vertical frame 23, or may be constituted by a single member extending in the longitudinal direction of the existing upper frame 21, the existing lower frame 22, and the existing vertical frame 23.

[0018] The cover member 50 has an upper frame cover member 51, a lower frame cover member 52, and a pair of left and right vertical frame cover members 53. The cover member 50 is fixed to the attachment body 40 and disposed on the outdoor side X1 of the existing frame 2.

[0019] The abutment portion 8 is the portion where the existing frame 2 and the attachment 4 abut against each other, and has an upper frame abutment portion 81, a lower frame abutment portion 82, and a vertical frame abutment portion 83.

[0020] The heat foaming material 6 is a material that foams and expands when exposed to heat such as fire, and closes the gaps between components, and is formed in a sheet shape. The heat foaming material 6 is attached to the new upper frame 31, the new lower frame 32, and the new vertical frame 33. The heat foaming material 6 has an upper frame side heat foaming material 61, a lower frame side heat foaming material 62, and a vertical frame side heat foaming material 63.

[0021] Referring to Figure 4A, the fixing structure of the existing upper frame 21, the newly constructed upper frame 31, the upper frame attachment main body 41, the upper frame cover member 51, and the upper frame side heating foaming material 61 will be described.

[0022] As shown in Fig. 1, the existing upper frame 21 is attached above the opening 11 of the building skeleton 100 and extends in the projection direction. As shown in Fig. 4A, the existing upper frame 21 has an indoor / outdoor direction extending plate 211 extending in the projection direction, an outer side surface portion 212 protruding downward from the end of the indoor / outdoor direction extending plate 211 on the outer side X1, an inner side surface portion 213 protruding downward from the end of the indoor / outdoor direction extending plate 211 on the inner side X2, guide rails 214, 215 for an existing shoji screen erected downward from the middle of the indoor / outdoor direction extending plate 211 in the indoor / outdoor direction, an outer L-shaped piece 216 protruding upward from the end of the indoor / outdoor direction extending plate 211 on the outer side X1, an inner L-shaped piece 217 protruding upward from the end of the indoor / outdoor direction extending plate 211 on the inner side X2, and an L-shaped connecting member 218 provided at the end of the indoor side X2. A guide rail 214 is provided on the exterior side X1, and a guide rail 215 is provided on the interior side X2.

[0023] The existing upper frame 21 is disposed above the opening 11, and the end portion on the indoor side X2 is fixed to the inner frame 101 of the building skeleton 100 via an L-shaped L-shaped connecting member 218. The existing upper frame 21 is also fixed to the building skeleton 100 by an outdoor side L-shaped piece 216 and an indoor side L-shaped piece 217. In this embodiment, a separate L-shaped connecting member 218 is connected to the end portion on the indoor side X2 of the existing upper frame 21, but this is not limited thereto. A rib protruding from the existing upper frame 21 integrally with the existing upper frame 21 may be provided without providing the L-shaped connecting member 218.

[0024] The upper frame attachment body 41 connects the existing upper frame 21 and the new upper frame 31. As shown in FIG. 4A , the upper frame attachment body 41 is a long member that is arranged between the existing upper frame 21 and the new upper frame 31 above the opening 11 and extends in the front direction. The upper frame attachment body 41 is connected to the inner periphery side of the existing upper frame 21. The upper frame attachment body 41 is arranged below the existing upper frame 21 and fixed to the existing upper frame 21.

[0025] The upper frame attachment body 41 extends in the projection direction. The upper frame attachment body 41 has an indoor / outdoor direction extending plate 411, an indoor side end extending portion 412, an attachment body side standing piece 413, and a protrusion 414.

[0026] The indoor / outdoor extending plate 411 extends in the indoor / outdoor direction, and is fixed with screws to the indoor / outdoor extending plate 211 of the existing upper frame 21 and the building skeleton 100. The upper surface of the indoor / outdoor extending plate 411 abuts against the lower end 212a of the outer side surface portion 212 of the existing upper frame 21 on the outside side X1, and abuts against the lower end 213a of the inner side surface portion 213 of the existing upper frame 21 on the inside side X2.

[0027] The lower ends 214a, 215a of the guide rails 214, 215 of the existing upper frame 21 abut against the upper surface of the indoor / outdoor direction extending plate 411. The lower ends 214a, 215a of the guide rails 214, 215 of the existing upper frame 21 may be positioned above and away from the upper surface of the indoor / outdoor direction extending plate 411 without abutting against the upper surface of the indoor / outdoor direction extending plate 411.

[0028] The indoor side end extension portion 412 extends from the indoor side X2 end of the indoor / outdoor direction extension plate 411 toward the indoor side X2.

[0029] The attachment body side standing piece 413 is formed near the outside X1 end of the indoor / outdoor direction extending plate 411 and stands upward from the upper surface of the indoor / outdoor direction extending plate 411. The attachment body side standing piece 413 runs along the indoor inside X2 surface of the outer side surface portion 212 of the existing upper frame 21 and abuts against the lower end portion 2121 of the outer side surface portion 212.

[0030] The protrusion 414 is formed to protrude downward from the end of the indoor / outdoor direction extension plate 411 on the outdoor side X1, and is positioned below the outer surface portion 212 of the existing upper frame 21.

[0031] The upper frame cover member 51 is fixed to the outdoor side X1 of the indoor / outdoor direction extension plate 411. The upper frame cover member 51 has an upper frame projected surface portion 511 as a projected surface portion, a cover member side standing piece 512, an outdoor side projected surface portion 513, and a hollow portion 514.

[0032] The upper frame projected surface portion 511 extends in the projected direction of the upper frame cover member 51. An outside X1 end of the upper frame projected surface portion 511 is connected to an upper end of an outside visible surface portion 513 described later. The upper frame projected surface portion 511 extends from the upper end of the outside visible surface portion 513 to the inside X2. The inside X2 edge of the upper frame projected surface portion 511 is positioned so as to overlap the underside of the outside X1 of the indoor / outdoor direction extending plate 411 of the upper frame attachment body 41, and is fixed by screws 91. The upper frame projected surface portion 511 is formed at the end closest to the inside X2, and has a bent end portion 511a that is bent upward.

[0033] The cover member side standing piece 512 stands up from the upper surface of the upper frame projected surface portion 511. The cover member side standing piece 512 is arranged opposite the attachment body side standing piece 413, and is arranged on the outdoor side X1 of the lower end portion 2121 of the outer side surface portion 212 of the existing upper frame 21. The cover member side standing piece 512 has a bent end portion 512a that bends from the upper end toward the outer side surface portion 212 of the existing upper frame 21. The bent end portion 512a is arranged so as to abut against the outdoor side protruding plate of the existing upper frame 21 from the outdoor side X1 of the existing upper frame 21. A water stop material 512b is arranged in the space formed by the cover member side standing piece 512, the bent end portion 512a, and the lower end portion 2121 of the outer side surface portion 212. The lower end 2121 of the outer surface portion 212 is sandwiched between the cover member side standing piece 512 and the attachment body side standing piece 413.

[0034] The outdoor facing surface 513 is disposed at the end of the outdoor side X1 of the upper frame cover member 51. The outdoor facing surface 513 is disposed protruding toward the outdoor side X1 from the existing upper frame 21, and hangs down from the end of the outdoor side X1 of the upper frame projection surface 511. The outdoor facing surface 513 has a predetermined width in the vertical direction and extends along the projection direction. The upper frame projection surface 511 and the outdoor facing surface 513 of the upper frame cover member 51 are formed in an L-shape that opens toward the indoor side X2 and downward in cross-sectional view. The outdoor facing surface 513 is disposed on the outdoor side X1 of the new upper frame 31. The outdoor facing surface 513 is disposed so as to cover at least a part of the end of the outdoor side X1 of the new upper frame 31, and abuts against the outer surface portion 315 of the new frame 3. The exterior facing surface portion 513 has a bent end portion 513a at its lower end that is bent toward the interior side X2.

[0035] The hollow portion 514 is disposed above the upper frame projection surface portion 511, and is formed by the upper frame projection surface portion 511, the exterior surface extending upward from the exterior facing surface portion 513, the cover member side standing piece 512, and the upper surface 514a connecting the upper end of the exterior surface extending from the exterior facing surface portion 513 and the upper end of the cover member side standing piece 512. The hollow portion 514 is formed to be hollow inside. A recess 514b is formed in the upper surface 514a of the hollow portion 514. A fin portion 514c protruding upward is inserted into the recess 514b. The fin portion 514c is formed of a soft resin such as rubber, and covers the exterior surface of the outer surface portion 212 of the existing upper frame 21.

[0036] 4A, the new upper frame 31 is attached to the inner periphery side (below the upper frame attachment body 41) of the upper frame attachment body 41 via a spacer member 316. The new upper frame 31 is placed on the lower surface of the spacer member 316 with the plate-shaped spacer member 316 sandwiched between the new upper frame 31 and the lower surface of the indoor / outdoor direction extension plate 411 of the upper frame attachment body 41.

[0037] The spacer member 316 is composed of one or more sheets. The thickness of the sheets constituting the spacer member 316 and the number of layers of the sheets are appropriately set according to the size of the gap between the upper frame attachment body 41 and the newly installed upper frame 31, etc. Depending on the size of the gap between the upper frame attachment body 41 and the newly installed upper frame 31, the spacer member 316 may not be provided.

[0038] The newly installed upper frame 31 is divided into two in the prospective 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 extruded shapes extruded in the longitudinal 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 newly installed upper frame 31.

[0039] The new upper frame 31 has a pair of guide rails 314a, 314b for the two shoji screens 71, 72 that are placed inside the new frame 3, and a guide rail 314c for the screen door 73 that is placed on the outermost side X1 of the new frame 3. The guide rails 314b, 314c are disposed on 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, 314c extend over the entire length of the new upper frame 31 in the longitudinal direction.

[0040] 4A, the outdoor frame member 311 integrally has a hollow portion 3111, an outdoor extension portion 3112, and an outer surface portion 315. The hollow portion 3111 is formed in a generally rectangular cross section extending from a portion where the guide rail 314b is disposed to the connecting member 313.

[0041] The outdoor extension 3112 extends toward the outdoor side X1 at a position lower than the upper surface 311a of the outdoor frame member 311. When the new upper frame 31 is attached to the inner periphery of the existing upper frame 21, the outdoor extension 3112 is the lowest part of the new upper frame 31. 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 rail 314b and the guide rail 314c. The outdoor extension 3112 also serves as a drainage channel that drains rainwater that has infiltrated the upper surface of the new upper frame 31 in the direction of view without flowing into the indoor side X2. The outdoor extension 3112 has a locking recess 3112a to which the upper frame side heating foaming material 61 described later is locked. The locking recess 3112a is formed on the upper surface of the outdoor extension portion 3112 so as to be recessed downward, and the upper ends of the outdoor side X1 and the indoor side X2 of the locking recess 3112a are configured to bend in the direction approaching each other, thereby preventing the upper frame side heating foam material 61 placed in the locking recess 3112a from coming off.

[0042] The outer side surface portion 315 extends in the vertical direction at the outermost side X1 of the outer extension portion 3112. The outer side surface portion 315 is arranged overlapping in the projection direction on the inner side X2 of the lower end side of the outer facing surface portion 513 of the upper frame cover member 51. A bent end portion 513a at the lower end of the outer facing surface portion 513 abuts against the outer side surface portion 315, and a water-stopping material 513b is provided between the outer side surface portion 315 and the outer facing surface portion 513.

[0043] The indoor frame member 312 has a hollow portion 3121 having a substantially rectangular cross section extending from the connecting member 313 toward the indoor side X2. The indoor frame member 312 has a hollow portion 3121 having a substantially rectangular cross section extending from the connecting member 313 toward the indoor side X2, and a locking recess 3121a in which the upper frame side heating foaming material 61 described later is locked. The hollow portion 3121 is divided into the indoor side X2 and the outdoor side X1 by a portion where a screw is fastened. The locking recess 3121a is formed on the upper surface of the indoor side X2 of the hollow portion 3121, recessed downward. The upper ends of the outdoor side X1 and the indoor side X2 of the locking recess 3121a are bent in a direction approaching each other, thereby preventing the upper frame side heating foaming material 61 arranged in the locking recess 3121a from coming off.

[0044] 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 newly installed upper frame 31. The connecting member 313 does not protrude above these upper surfaces 311a, 312a.

[0045] Between the pair of guide rails 314a, 314b of the new upper frame 31, a rail-to-rail cover 3113 made of resin or wood-derived material is attached. The rail-to-rail cover 3113 is disposed across the lower surface 311b 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. 4A, the rail-to-rail cover 3113 has a double structure constituted by an upper plate portion 3113a, a lower plate portion 3113b disposed substantially parallel to the lower side of the upper plate portion 3113a, and a plurality of connecting plate portions 3113c connecting the upper plate portion 3113a and the lower plate portion 3113b. The rail-to-rail cover 3113 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.

[0046] As shown in Fig. 4A, an angle member 319 made of resin or wood-derived material is attached to the end of the indoor side X2 of the indoor side frame member 312 of the newly installed upper frame 31. The angle member 319 is disposed along the lower surface of the indoor side frame member 312, and is connected to a decorative member 320 that covers the indoor side of the fixed structure on the upper frame side.

[0047] The upper frame abutment portion 81 is a portion where the existing upper frame 21 abuts against the upper frame attachment body 41 and the upper frame cover member 51. The upper frame abutment portion 81 has an exterior upper frame abutment portion 811 as the exterior abutment portion, a middle first upper frame abutment portion 812, a middle second upper frame abutment portion 813, and an interior upper frame abutment portion 814 as the interior abutment portion.

[0048] As shown in FIG. 4A , the outdoor upper frame abutment portion 811 includes both a portion where the lower end 212a of the outer side surface portion 212 abuts against the indoor / outdoor extending plate 411 and a portion where the bent end portion 512a of the upper frame cover member 51 abuts against the outdoor side surface portion 212 on the outdoor side X1 of the upper frame attachment body 41. The outdoor upper frame abutment portion 811 is along the extension direction of the outdoor side surface portion 212. The intermediate first upper frame abutment portion 812 is a portion where the lower end 214a of the guide rail 214 abuts against the indoor / outdoor extending plate 411. The intermediate second upper frame abutment portion 813 is a portion where the lower end 215a of the guide rail 215 abuts against the indoor / outdoor extending plate 411. The indoor side upper frame abutment portion 814 is the portion on the indoor side X2 of the upper frame attachment body 41 where the lower end 213a of the inner surface portion 213 hanging down from the underside of the indoor / outdoor extending plate 211 of the existing upper frame 21 abuts against the indoor / outdoor extending plate 411 of the upper frame attachment body 41.

[0049] The upper frame side heating foaming material 61 is arranged on the upper surface of the newly installed upper frame 31 as shown in Fig. 4A. The upper frame side heating foaming material 61 is arranged so as to foam toward the attachment 4 (upper frame attachment body 41 and upper frame cover member 51). The upper frame side heating foaming material 61 is arranged on the outdoor side X1 and the indoor side X2 in the prospective direction of the attachment 4 (upper frame attachment body 41 and upper frame cover member 51), and has an outdoor side heating foaming material 611 arranged on the outdoor side X1 and an indoor side heating foaming material 612 arranged on the indoor side X2.

[0050] The outdoor-side heating foaming material 611 is locked in a locking recess 3112a formed on the upper surface of the outdoor-side extension part 3112 of the outdoor-side frame member 311 of the newly-installed upper frame 31. As shown in Fig. 4A, the outdoor-side heating foaming material 611 is disposed at a position farther to the outdoor side X1 than a position corresponding to the outdoor-side upper frame abutment part 811 in the vertical direction. The position corresponding to the outdoor-side upper frame abutment part 811 in the vertical direction refers to the outdoor side of the hollow part 3111 in the outdoor frame member 311 of the newly-installed upper frame 31 below the outdoor-side upper frame abutment part 811, as shown by virtual line A in Fig. 4A.

[0051] The indoor-side heating foaming material 612 is locked in a locking recess 3121a formed in the indoor-side frame member 312 of the newly-installed upper frame 31. The indoor-side heating foaming material 612 is disposed at a position farther on the indoor side X2 than a position corresponding in the vertical direction to the indoor-side upper frame abutment portion 814. The position corresponding in the vertical direction to the indoor-side upper frame abutment portion 814 refers to a position on the outdoor side X1 below the indoor-side upper frame abutment portion 814 and further than the screw fastened to the hollow portion 3111 in the indoor-side frame member 312 of the newly-installed upper frame 31, as shown by the imaginary line B in FIG. 4A.

[0052] Next, the fixing structure of the existing lower frame 22, the newly installed lower frame 32, the lower frame attachment body 42, and the lower frame cover member 52 will be explained with reference to Figures 2 and 4B.

[0053] As shown in FIG. 2, the existing lower frame 22 is disposed at the bottom of the opening of the building skeleton 100, and is formed in a stepped shape from the lower exterior side X1 to the interior side X2 in the prospective direction. The existing lower frame 22 has a pair of guide rails 221a, 221b for an existing shoji screen that protrude upward from the stepped bottom surface 221, a guide rail 221c for an existing screen door, an inner side surface portion 221d that extends upward on the interior side X2 of the interior side X2, and an L-shaped connecting member 223 provided at the end of the interior side X2. The height of the existing lower frame 22 is formed so as to gradually decrease from the upper end of the inner side surface portion 221d of the interior side X2 to the guide rail 221c of the exterior side X1. The long side of the L-shaped connecting member 223 abuts against the inner side surface portion 221d, and the short side that bends from the upper end of the long side to the interior side X2 is fixed to the inner frame 101. An outer frame 102 inclined from the inside X2 to the outside X1 is fixed to the outside side X1 of the existing lower frame 22.

[0054] 4B , the lower frame attachment body 42 is attached so as to cover the upper part of the existing lower frame 22. The lower frame attachment body 42 has an indoor / outdoor extending plate 421, an outdoor inclined portion 422, an outdoor hanging surface portion 423, indoor protrusions 424a to 424c, and a holding piece 425.

[0055] The indoor / outdoor extending plate 421 extends almost flat from the end of the indoor side X2 to near the top of the guide rail 221b. The indoor / outdoor extending plate 421 is connected to the end of the indoor side X2 of the existing lower frame 22 near the end of the indoor side X2. The outdoor inclined portion 422 inclines downward from the end of the outdoor side X1 of the indoor / outdoor extending plate 421. The outdoor downward surface portion 423 hangs down from the end of the outdoor side X1 of the outdoor inclined portion 422 along the outdoor side surface of the guide rail 221c and is fixed to the guide rail 221c. The indoor side protrusions 424a to 424c are protrusions that protrude downward on the indoor side X2 of the indoor / outdoor extending plate 421. The indoor side protrusions 424a to 424c are arranged in order from the indoor side X2 to the outdoor side X1 with a gap between them. The indoor side protrusion 424a is located on the inner side X2, the indoor side protrusion 424b is located on the outdoor side X1 of the indoor side protrusion 424a, and the indoor side protrusion 424c is located on the outdoor side of the indoor side protrusion 424b. The indoor side protrusion 424c has a lower end bent toward the outdoor side X1 and abuts against the upper end of the inner side portion 221d of the existing lower frame 22. The holding piece 425 extends downward at a position spaced from the indoor side protrusion 424c toward the outdoor side X1, and has an L-shaped shape in vertical cross section that bends from the lower end toward the indoor side X2. The indoor side end of the holding piece 425 abuts against the outdoor side X1 surface of the inner side portion 221d of the existing lower frame 22.

[0056] The lower frame cover member 52 is fixed to the outdoor side hanging surface portion 423 of the lower frame attachment body 42, extends in the vertical direction at a position spaced from the outdoor side hanging surface portion 423 to the outdoor side X1, and covers the outdoor side hanging surface portion 423.

[0057] The newly installed lower frame 32 is divided into two in the prospective direction, an outdoor frame member 321 and an indoor frame member 322. The outdoor frame member 311 and the indoor frame member 312 are both metal frame members, and are each made of extruded shapes extruded in the longitudinal 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.

[0058] The new lower frame 32 has a pair of guide rails 324a, 324b for the two shoji screens 71, 72 that are placed inside the new frame 3, and a guide rail 324c for the screen door 73 that is placed on the outermost side X1 of the new frame 3. The guide rails 324b, 324c are disposed on the outer frame member 321 and protrude upward. The guide rail 324a is disposed adjacent to the connecting member 323 in the inner frame member 322 and protrudes upward. The guide rails 324a, 324b, 324c extend over the entire length of the new lower frame 32 in the longitudinal direction.

[0059] As shown in Fig. 4B, the outdoor frame member 321 has an end portion on the indoor side X2 connected to the connecting member 323 and fixed near the boundary between the indoor / outdoor direction extending plate 421 of the lower frame attachment body 42 and the outdoor side inclined portion 422. The outdoor frame member 321 has guide rails 324b, 324c arranged on its generally flat upper surface, and has a hollow structure inside. The outdoor frame member 321 has an upper surface 321a, a stepped inclined portion 321b, a locking recess 321c, an outer side surface portion 321d, a first protrusion 3211, a second protrusion 3212, and a third protrusion 3213.

[0060] The upper surface 321a extends to a position lower than the upper surface 322a of the indoor frame member 322. The step inclined portion 321b is inclined downward with a step along the inclination of the outdoor inclined portion 422. The locking recess 321c is formed on a surface inclined toward the outdoor side X1 from the third protrusion 3213 of the step inclined portion 321b. The locking recess 321c opens downward, and the upper part is the bottom surface of the locking recess 322c. The locking recess 321c is configured such that the ends of the outdoor side X1 and the indoor side X2 of the locking recess 321c are bent in a direction approaching each other, thereby preventing the lower frame side heating foaming material 62 arranged in the locking recess 321c from coming off. The outer side surface portion 321d hangs down and is exposed to the outside.

[0061] The first protrusion 3211 is formed protruding downward near the end of the upper surface 321a on the connecting member 323 side. The first protrusion 3211 rests on the indoor / outdoor direction extending plate 421 of the lower frame attachment main body 42. The second protrusion 3212 is disposed at a distance from the first protrusion 3211 to the outdoor side X1 and protrudes downward approximately parallel to the first protrusion 3211. The second protrusion 3212 rests on the indoor / outdoor direction extending plate 421. The third protrusion 3213 protrudes downward from the step inclined portion 321b and rests on a flat portion of the outdoor side inclined portion 422 of the lower frame attachment main body 42.

[0062] The indoor frame member 322 is placed on the indoor / outdoor extending plate 421 of the lower frame attachment body 42. The indoor frame member 322 is formed in a hollow rectangular cylinder shape, and has a flat upper surface 322a, a lower surface 322b, a locking recess 322c, an engagement portion 325, and a fixing piece 328. The upper surface 322a has an end portion on the outdoor side X1 connected to the connecting member 323, and a guide rail 324a protrudes upward from the boundary between the connecting member 323 and the upper surface 322a. The lower surface 322b faces the upper surface 322a and is disposed on the upper portion of the indoor / outdoor extending plate 421 of the lower frame attachment body 42. The locking recess 322c is formed on the lower surface 322b and opens downward, with the upper surface 322a side being the bottom surface of the locking recess 322c. The locking recess 322c is configured such that the upper ends of the outdoor side X1 and the indoor side X2 of the locking recess 322c are bent in a direction approaching each other, thereby preventing the upper frame side heating foaming material 61 arranged in the locking recess 322c from coming off. The engagement part 325 protrudes upward at the end of the indoor side X2 of the upper surface 322a. A molding material 326 is connected to the engagement part 325. The fixing piece 328 protrudes to the indoor side X2 of the locking recess 322c and is fixed to the end of the indoor side X2 of the lower frame attachment body 42 by a screw.

[0063] A top cover 327 made of resin or wood-derived material is attached to the top surface of the new lower frame 32. The top cover 327 has an outdoor top cover 3271 and an indoor top cover 3272. The outdoor top cover 3271 is arranged over the upper surface of the outdoor frame member 321 and the upper surface side of the connecting member 323 so as to substantially shield the space between the guide rails 324a, 324b in the new lower frame 32. The indoor top cover 3272 is arranged over the space between the guide rails 324b and the engagement portion 325. The top cover 327 is formed with a flat cover surface 327a and small legs 327b protruding downward from the lower surface of the cover surface 327a. The top cover 327 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 new lower frame 32.

[0064] The lower frame abutment portion 82 is the portion where the existing lower frame 22 abuts against the lower frame attachment body 42. The lower frame abutment portion 82 has an exterior lower frame abutment portion 821 as the exterior abutment portion, and an interior lower frame abutment portion 822 as the interior abutment portion.

[0065] As shown in FIG. 4B, the outdoor side lower frame abutment portion 821 is the portion where the guide rail 221c for the existing screen door abuts against the outdoor side hanging surface portion 423 of the lower frame attachment body 42 on the outdoor side X1.

[0066] The indoor side lower frame abutment portion 822 includes both a portion on the indoor side X2 where the upper end of the inner side surface portion 221d of the existing lower frame 22 abuts against the surface of the indoor side protrusion 424c of the lower frame attachment body 42 bent toward the outdoor side X1, and a portion where the end of the indoor side X2 of the retaining piece 425 abuts against the outdoor side surface of the inner side surface portion 221d. The indoor side lower frame abutment portion 822 is along the direction in which the inner side surface portion 221d of the existing lower frame 22 extends.

[0067] The lower frame side heating foaming material 62 is arranged on the lower surface of the newly installed lower frame 32, as shown in Fig. 4B. The lower frame side heating foaming material 62 is arranged so as to foam toward the attachment 4 (the lower frame attachment body 42 and the lower frame cover member 52). The lower frame side heating foaming material 62 is arranged on the outdoor side X1 and the indoor side X2 in the prospective direction of the attachment 4 (the lower frame attachment body 42 and the lower frame cover member 52), and has an outdoor side heating foaming material 621 arranged on the outdoor side X1 and an indoor side heating foaming material 622 arranged on the indoor side X2.

[0068] The outdoor-side heating foaming material 621 is locked in a locking recess 321c formed in the step inclined portion 321b of the newly-installed lower frame 32. The outdoor-side heating foaming material 621 is disposed at a position farther to the outdoor side X1 than a position corresponding in the up-down direction to the outdoor-side lower frame abutting portion 821 of the newly-installed lower frame 32. The position corresponding in the up-down direction to the outdoor-side lower frame abutting portion 821 refers to the vicinity of the center of the step inclined portion 321b in the prospective direction, as shown by the virtual line C in FIG. 4B.

[0069] The indoor-side heating foaming material 622 is locked in a locking recess 322c formed in the indoor-side frame member 322 of the newly-installed lower frame 32. The indoor-side heating foaming material 622 is disposed at a position farther toward the indoor side X2 than a position corresponding in the vertical direction to the indoor-side lower frame abutment portion 822 of the newly-installed lower frame 32. The position corresponding in the vertical direction to the indoor-side lower frame abutment portion 822 refers to the boundary portion between the lower surface 322b of the indoor-side frame member 322 and the locking recess 322c, as shown by the imaginary line D in FIG. 4B.

[0070] Next, the fixing structure of the pair of existing vertical frames 23, the new vertical frames 33, the vertical frame attachment body 43, the vertical frame cover member 53, and the vertical frame-side heated foaming material 63 will be described with reference to Fig. 3. Since the configurations of the pair of existing vertical frames 23, the new vertical frames 33, and the vertical frame attachment body 43 on the left and right sides in the view direction are generally similar, only the configuration of the left side shown in Fig. 3 will be described, and the description of the configuration of the right side will be omitted.

[0071] As shown in Fig. 3, the pair of existing vertical frames 23 are arranged along the vertically extending side portions of the opening 11 of the building skeleton 100. The existing vertical frames 23 have an indoor / outdoor extending plate 231 extending in the prospective direction, an outer side surface portion 232 extending in the prospective direction from the end of the indoor / outdoor extending plate 231 on the outside X1 side, an inner side surface portion 233 extending in the prospective direction from the end of the indoor / outdoor extending plate 231 on the inside X2 side, a guide rail 234 for an existing shoji screen erected from the middle of the indoor / outdoor extending plate 231 in the indoor / outdoor direction toward the inner periphery, an outdoor L-shaped piece 236 protruding outward in the prospective direction from the end of the indoor / outdoor extending plate 231 on the outside X1 side, and an indoor L-shaped piece 237 protruding outward in the prospective direction on the indoor / outdoor extending plate 231 on the inside X2 side.

[0072] The vertical frame attachment body 43 connects the existing vertical frame 23 and the new vertical frame 33. As shown in Fig. 3, the vertical frame attachment body 43 is disposed between the existing vertical frame 23 and the new vertical frame 33 on the side of the opening 11, and is a long member that has a predetermined width in the projection direction and extends in the up-down direction. The vertical frame attachment body 43 is disposed along the projection surface of the existing vertical frame 23 on the inside in the projection direction of the existing vertical frame 23, and is fixed to the existing vertical frame 23.

[0073] The vertical frame attachment body 43 extends in the projection direction. The vertical frame attachment body 43 has an indoor / outdoor extending plate 431, a vertical frame cover member fixing portion 432, and a connecting piece 433. The indoor / outdoor extending plate 431 is a plate-shaped portion extending in a position substantially parallel to the indoor / outdoor extending plate 211 of the existing vertical frame 23. The vertical frame cover member fixing portion 432 extends in the projection direction at a position where the outdoor end of the indoor / outdoor extending plate 211 is slightly shifted outward in the projection direction. The vertical frame cover member fixing portion 432 is formed in a step formed so as to be recessed outward in the projection direction from the indoor / outdoor extending plate 211. The connecting piece 433 is a flat portion protruding outward from the outer surface in the projection direction on the indoor side X2 of the indoor / outdoor extending plate 431. The connecting piece 433 is overlapped with the inner surface portion 233 of the existing vertical frame 23 and fixed with screws.

[0074] The vertical frame cover member 53 is fixed to the inner surface in the facing direction of the vertical frame attachment body 43, and is disposed on the outdoor side X1 of the existing vertical frame 23. The vertical frame cover member 53 has a vertical frame facing surface portion 531 as a facing surface portion, a connection piece 532, and an outdoor side facing surface portion 533.

[0075] The vertical frame projected surface portion 531 is a thin plate-like portion extending in the projected direction, and is overlapped on the vertical frame cover member fixing portion 432 of the vertical frame attachment main body 43 and fixed with screws. The vertical frame projected surface portion 531 extends from the indoor side X2 surface of the outdoor side projected surface portion 533 described below toward the indoor side X2 in the projected direction. The vertical frame projected surface portion 531 has a bent end portion 531a whose end portion on the indoor side X2 is bent toward the vertical frame cover member fixing portion 432. The bent end portion 531a abuts against the vertical frame cover member fixing portion 432, thereby closing the gap between the vertical frame projected surface portion 531 and the vertical frame cover member fixing portion 432.

[0076] The connection piece 532 is a flat portion that protrudes from the vicinity of the center of the vertical frame projection surface portion 531 in the projection direction toward the outside in the projection direction. The connection piece 532 is arranged so as to abut against the outside surface portion 232 from the outside X1 of the existing vertical frame 23. More specifically, the connection piece 532 has a bent end portion 532a whose free end side is bent toward the outside surface portion 232, and a water-stopping material 532b is arranged in a space surrounded by the connection piece 532, the bent end portion 532a of the connection piece 532, and the outside surface portion 232. A locking claw 532c that protrudes outward in the projection direction is formed at the end portion on the outer side of the projection direction of the connection piece 532. The locking claw 532c protrudes toward the outside X1 and then bends toward the inside X2 of the room to form a recess inside. A fin portion 523d ​​that protrudes toward the outside in the projection direction is inserted inside the locking claw 532c. The fin portion 523d ​​is formed of a soft resin such as rubber, and covers the existing vertical frame 23 and the side of the opening 11.

[0077] The exterior facing surface portion 533 is disposed on the exterior-most side X1 of the vertical frame facing surface portion 531, and extends in a direction substantially perpendicular to the vertical frame facing surface portion 531. The exterior facing surface portion 533 has a surface with a narrow facing width, and extends from the vertical frame facing surface portion 531 in one and the other directions in the facing direction.

[0078] 3, the pair of new vertical frames 33 are disposed along the vertically extending sides of the opening 11 of the building skeleton 100, and are attached to the inner side in the view direction of the vertical frame attachment body 43 via a spacer member 336. The new vertical frame 33 has an indoor / outdoor extending plate 331, an outer side surface portion 332, and guide rails 334a to 334c.

[0079] The indoor / outdoor extending plate 331 extends in the projection direction along the vertical frame attachment body 43 and the vertical frame cover member 53. The indoor / outdoor extending plate 331 has a locking recess 331a. The locking recess 331a is disposed on the outer side of the projection direction at the end of the indoor / outdoor extending plate 331 on the outer side of the projection direction X1. The locking recess 331a is configured to prevent the vertical frame side heating foaming material 63 disposed in the locking recess 331a from coming off by bending the engagement claws 331b protruding outward in the projection direction from the indoor / outdoor extending plate 331 in a direction approaching each other. The indoor / outdoor extending plate 331 is disposed on the inner side of the plate-shaped spacer member 336 with the plate-shaped spacer member 336 sandwiched between the indoor / outdoor extending plate 331 and the indoor / outdoor extending plate 431 of the vertical frame attachment body 43.

[0080] The spacer member 336 is composed of one or more sheets. The thickness of the sheets constituting the spacer member 336 and the number of layers of the sheets are appropriately set according to the size of the gap between the vertical frame attachment body 43 and the newly installed vertical frame 33, etc. Depending on the size of the gap between the vertical frame attachment body 43 and the newly installed vertical frame 33, the spacer member 336 may not be provided.

[0081] The outer side surface portion 332 is disposed on the outermost side X1 of the indoor / outdoor direction extending plate 331, and extends in a direction approximately perpendicular to the indoor / outdoor direction extending plate 331. The outer side surface portion 332 has a surface with a narrow visible width, and extends in one and the other visible directions from the indoor / outdoor direction extending plate 331. An outer visible surface portion 533 of the vertical frame cover member 53 is disposed on the outer side X1 of the outer side surface portion 332 of the newly installed vertical frame 33, and both extend in the up-down direction.

[0082] The pair of guide rails 334a, 334b ​​guide the two shoji screens 71, 72 that are placed inside the newly-installed frame 3. The guide rail 334c guides the screen door 73 (not shown in FIG. 3) that is placed on the outermost side X1 of the newly-installed frame 3. The guide rails 334a to 334c protrude from the inner surface of the indoor / outdoor extending plate 331 toward the inside in the front direction. The guide rails 334a, 334b, 334c extend over the entire length of the newly-installed vertical frame 33. As shown in FIG. 3, the guide rail 334a is disposed on the indoor side X2 of the indoor / outdoor extending plate 331 of one of the pair of newly-installed vertical frames 33 so as to engage with the shoji screen 71 on one side in the front direction (the right side in FIG. 3). The guide rail 334b ​​is disposed on the outdoor side of the indoor / outdoor extending plate 331 of the other of the pair of newly installed vertical frames 33 so as to engage with the shoji screen 72 on the other side in the front direction (the left side in FIG. 3). The guide rail 334c is formed on the outdoor end of the indoor / outdoor extending plate 331 of each of the pair of newly installed vertical frames 33. The guide rail 334c is formed integrally and continuously with the outer side surface portion 332.

[0083] The vertical frame abutment portion 83 constitutes an exterior abutment portion disposed on the exterior side of the room. The vertical frame abutment portion 83 includes a portion where the exterior side surface portion 232 of the existing vertical frame 23 abuts against the bent end portion 532a of the connection piece 532 of the lower frame cover member 52, and a portion where the inner end portion in the facing direction of the exterior side surface portion 232 abuts against the exterior side X1 end portion of the vertical frame cover member fixing portion 432 of the lower frame attachment main body 42. The vertical frame abutment portion 83 is aligned along the direction in which the exterior side surface portion 232 extends in the facing direction.

[0084] The vertical-frame-side heating foaming material 63 is disposed at the end of the new vertical frame 33 in the projection direction on the outdoor side X1. As shown in FIG. 3, the vertical-frame-side heating foaming material 63 is disposed so as to foam toward the vertical-frame cover member 53. Specifically, the vertical-frame-side heating foaming material 63 is disposed in the locking recess 331a formed in the indoor / outdoor direction extension plate 331 of the new vertical frame 33. The vertical-frame-side heating foaming material 63 is disposed at a position away from the position corresponding to the vertical frame abutment portion 83 in the new vertical frame 33 toward the outdoor side X1 in the projection direction. The position corresponding to the vertical frame abutment portion 83 refers to a position slightly away from the guide rail 334b ​​of the indoor / outdoor direction extension plate 331 toward the indoor side X2, as shown by the imaginary line E in FIG. 3.

[0085] Next, the screens 71 and 72 will be described.

[0086] As shown in FIG. 2, the shoji screens 71, 72 are constructed by fitting one or more panel members 714, 724 made of glass or the like inside a rectangular frame body formed by assembling an upper frame 711, 721, a lower frame 712, 722, and a pair of left and right vertical frames 713, 723 on both sides.

[0087] 2, the upper frames 711, 721 are composed of upper frame bodies 7111, 7211 made of extruded shapes extruded in the length direction from a metal material such as aluminum, and cover members 7112, 7212 made of resin or wood-derived material that cover the indoor side X2 side of the upper frame bodies 7111, 7211. The upper frame bodies 7111, 7211 are arranged to sandwich the guide rails 314a, 314b of the newly installed upper frame 31 in the prospective direction.

[0088] As shown in Fig. 2, the lower frame 712, 722 is composed of a lower frame body 7121, 7221 made of an extrusion formed by extruding a metal material such as aluminum in the length direction, and a cover member 7122, 7222 made of a resin or wood-derived material that covers the side surface of the lower frame body 7121, 7221 on the indoor side X2. The lower frame body 7121, 7221 is provided so as to sandwich the guide rails 324a, 324b of the newly installed lower frame 32 in the prospective direction. Inside the lower frame body 7121, 7221, a door roller 7123, 7223 is provided and is placed on the guide rails 324a, 324b so as to be rollable.

[0089] 3, the vertical frames 713, 723 are composed of vertical frame bodies 7131, 7231 made of extruded shapes extruded in the length direction from a metal material such as aluminum, and cover members 7132, 7232 made of resin or wood-derived material that cover the indoor side X2 side of the vertical frame bodies 7131, 7231. The vertical frame bodies 7131, 7231 are arranged to sandwich the guide rails 334a, 334b ​​of the newly installed vertical frames in the prospective direction.

[0090] According to this embodiment, the following effects are achieved. The remodeling fitting 1 is configured to include an existing frame 2 provided in the opening 11 of the building skeleton 100, a new frame 3 fixed to the inner periphery of the existing frame 2, and an attachment 4 arranged between the existing frame 2 and the new frame 3 and attaching the new frame 3 to the existing frame 2. In addition, the remodeling fitting 1 is configured to include an indoor abutment portion (indoor upper frame abutment portion 814, indoor lower frame abutment portion 822) where the existing frame 2 and the attachment 4 abut against each other on the indoor side X2, and an outdoor abutment portion (outdoor upper frame abutment portion 811, outdoor lower frame abutment portion 821, vertical frame abutment portion 83) where they abut against each other on the outdoor side. The newly installed frame 3 is provided at a position away from the position corresponding to the indoor side abutment portion (indoor side upper frame abutment portion 814, indoor side lower frame abutment portion 822) to either the indoor side X2 in the prospective direction or from the position corresponding to the outdoor side abutment portion (outdoor side upper frame abutment portion 811, outdoor side lower frame abutment portion 821, vertical frame abutment portion 83) to the outdoor side X1 or both, and is configured to include a heated foaming material 6 that foams toward the existing frame 2 and attachment 4. By positioning the heated foaming material 6 on the outdoor side X1 or indoor side X2 rather than the indoor side abutment parts (indoor side upper frame abutment part 814, indoor side lower frame abutment part 822) or the outdoor side abutment parts (outdoor side upper frame abutment part 811, outdoor side lower frame abutment part 821, vertical frame abutment part 83), a time difference occurs between the timing when heat is transferred and the heated foaming material 6 foams and the timing when the heat reaches the abutment parts and the abutment parts receive the heat, and the timing when the heated foaming material 6 foams is advanced. Therefore, the heated foaming material 6 can suppress the transfer of heat to the abutment parts and improve the fire prevention effect.

[0091] According to this embodiment, the attachment 4 is configured to include an attachment body 40 fixed to the existing frame 2, and a cover member 50 fixed to the attachment body 40 and disposed on the outdoor side X1 of the existing frame 2. By configuring the attachment 4 from two members, it becomes easier to adjust positional deviations due to construction errors and the like during installation, and the weight is reduced during handling, improving workability.

[0092] According to this embodiment, the dimension of the new frame 3 in the prospective direction is configured to be larger than the dimension of the existing frame 2 in the prospective direction. This makes it possible to arrange the heated foaming material 6 at a sufficient distance in the prospective direction from the indoor side abutment parts (indoor side upper frame abutment part 814, indoor side lower frame abutment part 822) and the outdoor side abutment parts (outdoor side upper frame abutment part 811, outdoor side lower frame abutment part 821, vertical frame abutment part 83). This makes it possible to effectively prevent heat from being transferred from the indoor side abutment parts and the outdoor side abutment parts. [Explanation of symbols]

[0093] 1 Renovated fitting, 2 Existing frame, 3 New frame, 4 Attachment, 6 Heated foam material, 11 Opening, 40 Attachment body, 50 Cover member, 83 Vertical frame abutment part (outdoor abutment part), 100 Building body, 811 Outdoor upper frame abutment part (outdoor abutment part), 814 Indoor upper frame abutment part (indoor abutment part), 821 Outdoor lower frame abutment part (outdoor abutment part), 822 Indoor lower frame abutment part (indoor abutment part)

Claims

1. A renovation fixture comprising: an existing frame provided at an opening in a building skeleton; a new frame fixed to the inner periphery of the existing frame; and an attachment disposed between the existing frame and the new frame for fixing the new frame to the existing frame; An indoor abutment portion where the existing frame and the attachment abut against each other on the indoor side, and an outdoor abutment portion where the existing frame and the attachment abut against each other on the outdoor side; A renovated fitting having a heated foaming material that is provided at a position away from a position corresponding to the indoor side abutment portion on the newly installed frame to the indoor side in the expected direction, or away from a position corresponding to the outdoor side abutment portion to the outdoor side, or both, and that foams toward the attachment.

2. The renovation fixture according to claim 1 , wherein the attachment comprises an attachment body fixed to the existing frame, and a cover member fixed to the attachment body and positioned on the outside of the existing frame.

3. The renovation fixture according to claim 1 or 2, wherein the dimension of the new frame in the prospective direction is greater than the dimension of the existing frame in the prospective direction.

Images