Renovated fittings

Abstract

To provide a renovation fitting capable of improving the thermal insulation performance for the indoor side of a new frame.SOLUTION: A renovation fitting that is attached to an existing frame placed in an opening of a building includes: an attachment frame to be attached to the inner circumference of the existing frame; a new frame to be attached to the inner circumference of the attachment frame; and a resin cover member that covers the interior side of the attachment frame and new frame. A heat insulating material is provided inside the cover member.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] Conventionally, in a renovation fitting in which a new frame is attached to an existing frame attached to an opening in a building, it is known to renovate the fitting into an insulated fitting by attaching an insulating frame body to the existing frame (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-285757 Summary of the Invention [Problem to be solved by the invention]

[0004] In retrofitting building materials, it is necessary to further improve the thermal insulation performance of the new frame attached to the existing frame on the indoor side.

[0005] The present disclosure aims to provide a renovated building fixture that can further improve the insulating performance of the newly constructed frame on the indoor side. [Means for solving the problem]

[0006] The present disclosure relates to a renovated fixture that is attached to an existing frame installed in an opening in a building, and that comprises an attachment frame that is attached to the inner periphery of the existing frame, a new frame that is attached to the inner periphery of the attachment frame, and a resin cover member that covers the interior sides of the attachment frame and the new frame, with heat insulating material provided inside the cover member. [Brief explanation of the drawings]

[0007] [Figure 1]This is a front view of a renovated sliding window type fixture seen from the outside of the room. [Figure 2] FIG. 2 is a vertical cross-sectional view of the renovated fixture shown in FIG. 1. [Figure 3] FIG. 2 is a cross-sectional view of the renovated fixture shown in FIG. 1. [Figure 4] This is an oblique view from outside the room showing a new frame with an attachment frame attached to an existing frame. [Figure 5] FIG. 10 is a perspective view showing the exterior decorative cover being attached. [Figure 6] This is an oblique view from the inside of the room showing a new frame with an attachment frame attached to an existing frame. [Figure 7] FIG. 10 is a perspective view showing the state in which the interior decorative member and the trim material are attached. [Figure 8] This is an oblique view showing the state in which a new frame with an attachment frame attached is attached to an existing frame. [Figure 9] This is an oblique view showing the state in which an attachment frame is attached to a new frame. [Figure 10] A cross-sectional view showing the state in which the attachment upper frame is attached to the newly installed upper frame. [Figure 11] A cross-sectional view showing the state in which the attachment lower frame is attached to the newly installed lower frame. [Figure 12] A cross-sectional view showing the state in which an attachment vertical frame on one side is attached to a new vertical frame on one side. [Figure 13] A cross-sectional view showing the state in which the attachment vertical frame on the other side is attached to the new vertical frame on the other side. [Figure 14] This is an enlarged cross-sectional view showing the attachment upper frame portion attached to the new upper frame. [Figure 15] An enlarged view showing the mounting portion between the new upper frame and the attachment upper frame. [Figure 16] This is a vertical cross-sectional view showing an enlarged view of the upper frame side of a decorative window type renovated fixture. [Figure 17] 17 is an enlarged view showing the engagement portion between the new upper frame and the attachment upper frame in FIG. 16. FIG. [Figure 18]This is an enlarged cross-sectional view showing the new lower frame and the attachment lower frame. [Figure 19] FIG. 10 is a cross-sectional view showing another embodiment of the first insulating material provided inside the cover member. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the drawings. The remodeling fitting 1 according to this embodiment is a remodeling fitting 1 for renovation, which is formed by newly installing new members while leaving the existing frame 6 fixed to the building 100 attached to the building 100.

[0009] In this specification, "prospect direction" refers to the face direction of the surface material of the shoji screen 10 in the remodeled fitting 1 placed in an opening formed in the wall of the building 100, and "prospect direction" refers to the thickness direction of the surface material (i.e., the depth direction). The "prospect direction" also refers to 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 of the remodeled fitting 1 is referred to as the "left-right direction."

[0010] The remodeled fitting 1 according to this embodiment is a remodeled sash of a sliding window type that is fitted into an opening of a building 100. The remodeled fitting 1 is attached to an existing frame 6 that is provided in the opening of the building 100.

[0011] As shown in Figures 1 to 7, the remodeled fitting 1 comprises a new frame 2, an attachment frame 3 attached to the outer periphery of the new frame 2 and attached to the inside of the existing frame 6, interior decorative members 41, 42, 43 (cover members), exterior decorative covers 51, 52, 53, and shoji screens 10, 10 that are slidably stored within the new frame 2. The existing frame 6 is installed in an opening of the building 100. The new frame 2 is attached to the inside of the existing frame 6 with the attachment frame 3 attached to the outer periphery. The attachment frame 3 is placed between the existing frame 6 and the new frame 2.

[0012] First, we will explain the configuration of the existing frame 6. As shown in Figures 2 and 3, the existing frame 6 is provided inside the opening of the building 100 and is formed in the shape of a rectangular frame. The existing frame 6 includes an existing upper frame 61, an existing lower frame 62, and existing vertical frames 63 on the left and right.

[0013] 2, the existing upper frame 61 is attached to the upper side of the opening of the building 100, and has guide rails 611, 612 for the existing shoji screen that are erected downward. The inside X2 portion of the existing upper frame 61 is fixed to the building 100 (frame).

[0014] The existing lower frame 62 is attached to the lower side of the opening of the building 100, and has guide rails 621, 622 for the existing shoji screen that stand upright facing upward. The inside X2 portion of the existing lower frame 62 is fixed to the building 100 (frame).

[0015] 3, the existing vertical frames 63 are attached to the left and right vertical sides of the outdoor side X1 of the opening of the building 100. The indoor side X2 portion of the existing vertical frames 63 is fixed to the building 100 (frame).

[0016] As shown in Figures 8 and 9, the new frame 2 is attached to the existing frame 6 with the attachment frame 3 attached to the outer periphery. The new frame 2 is made up of four parts and is attached to the inner periphery of the existing frame 6 via the attachment frame 3.

[0017] The new frame 2 includes a new upper frame 21, a new lower frame 22, and left and right new vertical frames 23. When the new frame 2 is assembled around all four sides, it is fixed with screws at the joints of the new upper frame 21, the new lower frame 22, and the left and right new vertical frames 23. The attachment frame 3 includes an upper attachment frame 31, a lower attachment frame 32, and left and right vertical attachment frames 33.

[0018] When the new frame 2, with the attachment frame 3 attached to its outer periphery, is attached to the existing frame 6, the new upper frame 21 is attached to the inner periphery (underside) of the existing upper frame 61, with the attachment upper frame 31 sandwiched between them, as shown in Figure 2. The new upper frame 21 is made of, for example, a metal or resin material, and has guide rails 211, 212 on the upper side of the shoji screens 10, 10 that are erected downward. A resin angle member 213 is provided on the interior side X2 of the new upper frame 21. The resin angle member 213 is arranged with a gap between it and the frame member 101.

[0019] The new upper frame 21 is divided into two parts, an outdoor frame section 21A and an indoor frame section 21B, in the forward direction, and has a structure in which the outdoor frame section 21A and the indoor frame section 21B are integrally connected by a resin bridge material 214. The resin bridge material 214 blocks heat transfer in the indoor and outdoor directions in the new upper frame 21. Therefore, the new upper frame 21 has excellent thermal insulation properties.

[0020] When the new frame 2, with the attachment frame 3 attached to its outer periphery, is attached to the existing frame 6, the new sill 22 is attached to the inner periphery of the existing sill 62, with the attachment sill 32 sandwiched between them, as shown in Figure 2. The new sill 22 is made of, for example, a metal or resin material, and has guide rails 221, 222 on the lower side of the shoji screens 10, 10 that are erected upward. A resin angle member 223 is provided on the interior side X2 of the new sill 22. The resin angle member 223 is arranged with a gap between it and the frame member 101.

[0021] The new lower frame 22 is divided into two parts, an outdoor frame section 22A and an indoor frame section 22B, in the forward direction, and has a structure in which the outdoor frame section 22A and the indoor frame section 22B are integrally connected by a resin bridge material 224. The resin bridge material 224 blocks heat transfer in the indoor and outdoor directions in the new lower frame 22. Therefore, the new lower frame 22 has excellent thermal insulation properties.

[0022] As shown in FIG. 3 , when the new frame 2, with the attachment frame 3 attached to its outer periphery, is attached to the existing frame 6, the new vertical frame 23 is attached to the inner periphery of the existing vertical frame 63, with the attachment vertical frame 33 sandwiched between them. The new vertical frame 23 is formed, for example, from a metal material or a resin material. A resin angle member 233 is provided on the interior side X2 of the new vertical frame 23. The resin angle member 233 is arranged with a gap between it and the frame member 101.

[0023] The above-mentioned new frame 2 (new upper frame 21, new lower frame 22, and new left and right vertical frames 23) is attached to the inner periphery of the existing frame 6 (existing upper frame 61, existing lower frame 62, and left and right existing vertical frames 63), with the attachment frame 3 (upper attachment frame 31, lower attachment frame 32, and left and right vertical attachment frames 33) arranged around the outer periphery.

[0024] The attachment frame 3 is attached to the outer periphery of the new frame 2 in a four-way configuration. The attachment frame 3 is attached to the inner periphery of the existing frame 6 in a state where it is attached to the outer periphery of the new frame 2 in a four-way configuration.

[0025] 8 and 9, the attachment frame 3 is configured by an upper attachment frame 31, a lower attachment frame 32, and a pair of vertical attachment frames 33 arranged on all four sides to form a rectangle. The upper attachment frame 31, the lower attachment frame 32, and the left and right vertical attachment frames 33 are each made of, for example, aluminum material.

[0026] The upper attachment frame 31 is disposed at the top of the attachment frame 3 and extends in the left-right direction (horizontal direction). The lower attachment frame 32 is disposed at the bottom of the attachment frame 3 and extends in the left-right direction (horizontal direction). The vertical attachment frame 33 is disposed at the end of the attachment frame 3 in the left-right direction and extends in the up-down direction.

[0027] As shown in Figures 8 and 9, the attachment frame 3 is configured in a so-called vertical overhang structure, in which the longitudinal ends of the attachment vertical frame 33 are positioned outside the longitudinal ends of the attachment upper frame 31 and the attachment lower frame 32 so as to cover the longitudinal ends of the attachment upper frame 31 and the attachment lower frame 32.

[0028] When the attachment frame 3 is attached to the inner periphery of the existing frame 6, it is disposed between the new frame 2 and the existing frame 6. As shown in FIG. 10, the upper attachment frame 31 is placed on the top surface of the new upper frame 21, and then, as shown in FIGS. 2 and 15, is fixed to the new upper frame 21 by a fixing screw 31a that passes from the upper attachment frame 31 to the new upper frame 21 and a fixing screw 31b that passes from the new upper frame 21 to the upper attachment frame 32. As shown in FIG. 11, the lower attachment frame 32 is attached in a state where it is hooked onto the new lower frame 22, and then, as shown in FIG. 2, is fixed to the new lower frame 22 by fixing screws 32a and 32b that pass from the lower attachment frame 32 to the new lower frame 22. As shown in FIGS. 12 and 13, the vertical attachment frame 33 is attached in a state where it is hooked onto the new vertical frame 23.

[0029] With the upper attachment frame 31, the lower attachment frame 32, and the pair of vertical attachment frames 33 attached to the outer periphery of the new frame 2, the upper attachment frame 31, the lower attachment frame 32, and the pair of vertical attachment frames 33 are fixed to each other with screws at the assembly portions of any two frames. Specifically, the upper and lower ends of each of the pair of vertical attachment frames 33 are fixed to both longitudinal ends of the upper attachment frame 31 with screws, and the upper and lower ends of each of the pair of vertical attachment frames 33 are fixed to both longitudinal ends of the lower attachment frame 32 with screws.

[0030] 2 and 10, the upper attachment frame 31 is divided into two parts, an outdoor frame portion 31A and an indoor frame portion 31B, in the prospective direction, and has a structure in which the outdoor frame portion 31A and the indoor frame portion 31B are integrally connected by a resin bridge material 311. The resin bridge material 311 blocks the transfer of heat between the indoor and outdoor directions via the upper attachment frame 31. Therefore, the upper attachment frame 31 has excellent thermal insulation properties.

[0031] 2, 10, and 15, the outdoor frame portion 31A of the attachment upper frame 31 has an outdoor-side upward-extending plate portion 312 (a plate portion extending in the view direction), an indoor-outdoor extending portion 313, a first hollow portion 314, a screw fixing portion 315, an L-shaped hook piece 316a, and an outdoor-side downward abutment piece 316b. The indoor frame portion 31B of the attachment upper frame 31 has a second hollow portion 317 and an indoor-side horizontal extending plate 318. The upper surface 314a of the first hollow portion 314 and the upper surface 317a of the second hollow portion 317 are positioned at the same height and form the same flat plane.

[0032] The outdoor-side upward-extending plate portion 312 is formed in the shape of a plate extending upward from the outdoor-side X1 end of the indoor-outdoor-side extending portion 313. The outdoor-side upward-extending plate portion 312 is arranged on the outdoor side X1 and extends upward (upward in the view direction). A pair of engaging protrusions 312a arranged spaced apart above and below are formed on the lower side of the outdoor-side X1 surface of the outdoor-side upward-extending plate portion 312. A pair of engaging protrusions 51a of the outdoor decorative cover 51 engages with and is attached to the pair of engaging protrusions 312a.

[0033] The indoor / outdoor extending portion 313 extends from the lower end of the outdoor-side upward extending plate portion 312 toward the indoor side X2. The indoor / outdoor extending portion 313 functions as a water reservoir when water, such as rain, seeps in from the outdoor side X1. The first hollow portion 314 is located on the indoor-side X2 side of the outdoor frame portion 310A. As shown in FIGS. 10 and 15 , the upper surface 314a of the first hollow portion 314 is located higher than the indoor / outdoor extending portion 313. The screw fixing portion 315 is located between the indoor / outdoor extending portion 313 and the first hollow portion 314. The screw fixing portion 315 serves as a base through which fixing screws 31a, which are used to fix the attachment upper frame 31 to the outer periphery of the new upper frame 21, are inserted from above the attachment upper frame 31 toward the new upper frame 21, and extends along the longitudinal direction of the attachment upper frame 31.

[0034] The screw fixing portion 315 is positioned below the upper surface 314a of the first hollow portion 314, but above the bottom surface of the indoor-outdoor extending portion 313. Therefore, even if water seeps onto the indoor-outdoor extending portion 313 from the outside side X1, the water remains on the indoor-outdoor extending portion 313, whose bottom surface is positioned lower than the screw fixing portion 315, and does not seep onto the screw fixing portion 315. This eliminates the risk of water leaking from the attachment upper frame 31 to the new upper frame 21 along the fixing screws 31a that penetrate the screw fixing portion 315, improving the waterproofing of the attachment upper frame 31. Water on the indoor-outdoor extending portion 313 is drained from the end of the indoor-outdoor extending portion 313 into the interior of the vertical attachment frame 33.

[0035] The L-shaped hook piece 316a is disposed on the underside of the indoor / outdoor extending portion 313, protrudes downward toward the new upper frame 21, and has an L-shaped bend toward the indoor side X2. The L-shaped hook piece 316a is a mounting portion when the new upper frame 21 is hooked and mounted. The mounting structure of the new upper frame 21 using this L-shaped hook piece 316a will be described later.

[0036] The outdoor-side lower abutment piece 316b is integrally formed with the lower end of the L-shaped hook piece 316a and protrudes toward the outdoor side X1. The outdoor-side lower abutment piece 316b is formed in a plate shape with a predetermined width in the projection direction and is slightly inclined downward toward the outdoor side, following the inclination of the outdoor-side upper surface 21a of the new upper frame 21. The outdoor-side lower abutment piece 316b is placed on the upper surface 21a of the new upper frame 21 with a gasket member 319a made of resin, rubber, or the like interposed between the outdoor-side lower abutment piece 316b and the upper surface 21a of the new upper frame 21. With the outdoor-side lower abutment piece 318 placed on the upper surface 21a of the new upper frame 21, the attachment upper frame 31 is fixed to the new upper frame 21 by a fixing screw 31a penetrating the screw fixing portion 315 and a fixing screw 31b penetrating from the new upper frame 21 toward the second hollow portion 317. The outdoor lower abutment piece 316b is formed in the shape of a plate having a predetermined width in the projection direction, so that the outdoor side X1 of the attachment upper frame 31 can be stably attached to the upper surface 21a of the outdoor side X1 of the newly installed upper frame 21.

[0037] As shown in Figures 14 and 15, the resin bridge member 311 of the upper attachment frame 31 is provided across the opposing side surfaces 314b, 317b of the first hollow portion 314 and the second hollow portion 317 of the upper attachment frame 31. Specifically, the side surfaces 314b, 317b are provided with a plurality of grooves 314c, 317c extending in the longitudinal direction of the upper attachment frame 31, respectively, in parallel to the vertical direction. The resin bridge member 311 is composed of a plurality of long, strip-shaped bridge members 311a, 311b extending along the longitudinal direction of the outer frame portion 31A and the inner frame portion 31B, respectively. The outer frame portion 31A and the inner frame portion 31B are integrally connected by fitting the widthwise ends of the strip-shaped bridge members 311a, 311b into the grooves 314c, 317c, respectively.

[0038] Because the resin bridge material 311 is composed of multiple strip-shaped bridge portions, it is possible to adjust the number, spacing, and thickness of the strip-shaped bridge portions as needed depending on the vertical thickness of the outdoor frame portion 31A and the indoor frame portion 31B of the upper attachment frame 31. In other words, by adjusting the number, spacing, and thickness of the same shaped strip-shaped bridge portions as needed, it is possible to easily accommodate upper attachment frames of different thicknesses.

[0039] A gasket member 319b made of resin, rubber, or the like is arranged on the underside of the resin bridge member 311 of the attachment upper frame 31, spanning the outdoor frame portion 31A and the indoor frame portion 31B, to prevent thermal connection between the outdoor frame portion 31A and the indoor frame portion 31B via the new upper frame 21. Furthermore, as shown in Figure 10, when the attachment upper frame 31 is placed on the new upper frame 21, the outdoor frame portion 31A of the attachment upper frame 31 is placed on the outdoor frame portion 21A of the new upper frame 21, and the indoor frame portion 31B of the attachment upper frame 31 is placed on the indoor frame portion 21B of the new upper frame 21. Therefore, heat is not transferred between the indoor and outdoor directions via the outdoor frame portions 21A, 31A and indoor frame portions 21B, 31B of the new upper frame 21 and the attachment upper frame 31.

[0040] The upper surfaces of the outdoor frame portion 31A and the indoor frame portion 31B of the attachment upper frame 31 are formed by the upper surface 314a of the first hollow portion 314 and the upper surface 317a of the second hollow portion 317. These upper surfaces 314a, 317a form a flat surface at the same height. In this embodiment, as shown in Fig. 10, an L-shaped space S1 is formed on the outer periphery of the attachment upper frame 31, as shown by the imaginary line (chain double-dashed line), from the indoor side X2 toward the outdoor side X1, by the space above the upper surfaces 314a of the first hollow portion 314 and the upper surfaces 317a of the second hollow portion 317 to the space in front of the outdoor upwardly extending plate portion 312, and by the space extending upward from the space in front of the outdoor upwardly extending plate portion 312. The L-shaped space S1 is formed on the outer periphery of the attachment upper frame 31 along the indoor side X2 surface of the outdoor upward extending plate portion 312, the upper surface 314a of the first hollow portion 314, and the upper surface 317a of the second hollow portion 317.

[0041] This allows the existing upper frame 61 to fit within the L-shaped space S1, making it possible to easily attach the attachment frame 3 with the new frame 2 attached to the existing frame 6. In particular, in this embodiment, the upper surface 314a of the first hollow portion 314 and the upper surface 317a of the second hollow portion 317 are formed along the indoor / outdoor direction of the attachment upper frame 31, so that the attachment upper frame 31 with the new upper frame 21 attached can be attached to the existing upper frame 61 in a manner that does not get in the way during attachment and accommodates existing frames 6 of various shapes.

[0042] The indoor side horizontal extension plate 318 is disposed at the end of the attachment upper frame 31 closest to the indoor side X2. The indoor side horizontal extension plate 318 extends horizontally from the indoor side X2 end of the upper surface 317a of the second hollow portion 317 toward the indoor side X2. The indoor side horizontal extension plate 318 is disposed on the same plane as the upper surface 317a of the second hollow portion 317, and is formed in a flat shape over the entire longitudinal area of ​​the attachment upper frame 31.

[0043] As shown in Fig. 2, when the attachment frame 3 is fixed to the building 100 (skeleton), the mounting screws 34 are inserted through the indoor-side horizontal extension plate 318. In this way, the indoor-side horizontal extension plate 318 is fixed to the building 100 (skeleton) by the mounting screws 34. If a gap is formed between the indoor-side horizontal extension plate 318 and the frame member 101, a spacer member 341 is placed. The spacer member 341 is made up of multiple sheets, and the thickness of the sheets for filling the gap is set according to the size of the gap between the indoor-side horizontal extension plate 318 and the frame member 101.

[0044] 2 and 10, the attachment lower frame 32 is divided into two parts in the prospective direction, an outdoor frame section 32A and an indoor frame section 32B, and the outdoor frame section 32A and the indoor frame section 32B are integrally connected by a resin bridge material 321. The resin bridge material 321 blocks heat transfer between the indoor and outdoor directions via the attachment lower frame 32, improving insulation performance.

[0045] 2 and 11, the outdoor frame portion 32A of the attachment lower frame 32 has an outdoor downward extending plate portion 322 (a plate portion extending in the view direction), an indoor / outdoor extending portion 323, and an indoor upward extending plate portion 324. The indoor frame portion 32B of the attachment lower frame 32 has a hollow portion 325, an L-shaped hook piece 326, an indoor upward extending plate 327, and an indoor horizontal extending plate 328.

[0046] The outdoor-side downward-extending plate portion 322 is formed in a plate shape extending downward from the outdoor-side X1 end of the indoor-outdoor-side extending portion 323. The outdoor-side downward-extending plate portion 322 is arranged on the outdoor side X1 and extends downward (downward in the view direction). A pair of engaging protrusions 322a are formed on the upper side of the outdoor-side X1 surface of the outdoor-side downward-extending plate portion 322, spaced apart from each other above and below. A pair of engaging protrusions 52a of the outdoor decorative cover 52 engages with and is attached to the pair of engaging protrusions 322a.

[0047] The indoor-outdoor extending portion 323 extends toward the indoor side X2 from the lower end of the outdoor-side downward extending plate portion 322. The indoor-outdoor extending portion 323 is a portion through which fixing screws 32a for fixing the attachment lower frame 32 to the outer periphery of the new lower frame 22 pass from below the attachment lower frame 32 toward the new lower frame 22, and extends along the longitudinal direction of the attachment lower frame 32. The indoor-side upward extending plate portion 324 extends upward from the indoor side X2 end of the indoor-side upward extending portion 323, and faces an outdoor side X1 side surface 325a of the hollow portion 325 of the indoor side frame portion 32B arranged on the indoor side X2 side.

[0048] 18, the resin bridge material 321 of the attachment lower frame 32 is provided across the indoor-side upward-extending plate portion 324 of the outdoor-side frame portion 32A and the outdoor-side X1 side surface 325a of the hollow portion 325 of the indoor-side frame portion 32B. Specifically, a plurality of grooves 324b, 325b extending in the longitudinal direction of the attachment lower frame 32 are provided in parallel in the vertical direction on the indoor-side X2 side surface 324a of the indoor-side upward-extending plate portion 324 and the outdoor-side X1 side surface 325a of the hollow portion 325. The resin bridge material 321 is composed of a plurality of long, strip-shaped bridge portions 321a, 321b that extend along the longitudinal directions of the outdoor frame portion 32A and the indoor frame portion 32B, respectively. Both widthwise ends of the band-shaped bridge portions 321a and 321b are fitted into the groove portions 324b and 325b, respectively, thereby integrally connecting the outdoor frame portion 32A and the indoor frame portion 32B.

[0049] Because the resin bridge material 321 is composed of multiple strip-shaped bridge portions, it is possible to appropriately adjust the number, spacing, and thickness of the strip-shaped bridge portions according to the vertical thickness of the exterior frame portion 32A and the interior frame portion 32B of the attachment lower frame 32. In other words, by appropriately adjusting the number, spacing, and thickness of strip-shaped bridge portions of the same shape, it is possible to easily accommodate attachment lower frames of different thicknesses.

[0050] A gasket member 329 made of resin, rubber, or the like is arranged on the upper surface of the resin bridge member 321 of the attachment lower frame 32, spanning the outdoor frame portion 32A and the indoor frame portion 32B, to prevent thermal connection between the outdoor frame portion 32A and the indoor frame portion 32B via the new lower frame 22. Furthermore, as shown in Figure 11, when the attachment lower frame 32 is overlapped on the new lower frame 22, the outdoor frame portion 32A of the attachment lower frame 32 overlaps the outdoor frame portion 22A of the new lower frame 22, and the indoor frame portion 32B of the attachment lower frame 32 overlaps the indoor frame portion 22B of the new lower frame 22. Therefore, heat is not transferred between the indoor and outdoor directions via the outdoor frame portions 22A, 32A and indoor frame portions 22B, 32B of the new lower frame 22 and the attachment lower frame 32.

[0051] The lower surface of the attachment lower frame 32 is formed flat so as not to come into contact with the inner periphery of the existing frame 6 when the attachment frame 3 with the new frame 2 attached thereto is attached to the inner periphery of the existing frame 6. In this embodiment, as shown in Fig. 11, an L-shaped space S2 is formed on the outer periphery of the attachment lower frame 32, as shown by the imaginary line (two-dot chain line), from the indoor side X2 toward the outdoor side X1 to the space in front of the outdoor-downward extending plate portion 322, and by the space extending downward from the space in front of the outdoor-downward extending plate portion 322. The L-shaped space S2 is formed on the outer periphery of the attachment lower frame 32 along the indoor side X2 surface of the outdoor-downward extending plate portion 322 and the lower surface of the attachment lower frame 32.

[0052] This allows the existing lower frame 62 to fit within the L-shaped space S2, making it easy to attach the attachment frame 3 with the new frame 2 attached to the existing frame 6. In particular, in this embodiment, as shown in FIG. 2, the lower surface of the attachment lower frame 32 is formed along the indoor / outdoor direction of the attachment lower frame 32. This allows the attachment lower frame 32 with the new frame 2 attached to be attached to the existing lower frame 62 so as not to get in the way during attachment, in accordance with various shapes of existing frames 6. When attaching the attachment frame 3 with the new frame 2 attached to the existing frame 6, it is attached in an inclined state so that the lower end is positioned closer to the existing frame 6 than the upper end. Therefore, the entire attachment frame 3 is attached to the existing frame 6 after the existing lower frame 62 enters the L-shaped space S2. Therefore, by fitting the L-shaped space S2 within the existing lower frame 62, the attachment frame 3 with the new frame 2 attached can be easily attached to the existing frame 6.

[0053] The L-shaped hook piece 326 is disposed on the upper surface of the indoor-outdoor extending portion 323, protrudes upward toward the new lower frame 22, and has an L-shaped bend toward the outside side X1. As shown in FIG. 11 , when the new lower frame 22 is attached, the L-shaped hook piece 326 engages with the new lower frame 22 at the outside side X1 by hooking onto a hook piece 225 that protrudes downward from the outside side X1 of the new lower frame 22. In this state, the outside side X1 of the attachment lower frame 32 is fixed by a fixing screw 32a that passes through the indoor-outdoor extending portion 323 from the new lower frame 22, as shown in FIG.

[0054] The indoor-side upward extending plate 327 is disposed at the end closest to the indoor side X2 of the attachment lower frame 32. The indoor-side upward extending plate 327 extends upward from the indoor side X2 end of the upper surface of the hollow portion 325, and is formed in a flat shape over the entire longitudinal area of ​​the attachment lower frame 32. As shown in Figures 2 and 11, when the attachment lower frame 32 is attached to the new lower frame 22, the indoor-side upward extending plate 327 abuts against the indoor side X2 side of the indoor side downward extending plate 226 that extends downward from the indoor side X2 end of the new lower frame 22. In this state, the indoor side X2 of the attachment lower frame 32 is fixed by a fixing screw 32b that penetrates horizontally from the indoor side X2 to the outdoor side X1 from the indoor side upward extension plate 327 of the attachment lower frame 32 to the indoor side downward extension plate 226 of the newly installed lower frame 22, as shown in Figure 2.

[0055] The indoor-side horizontal extension plate 328 is disposed at the end of the attachment lower frame 32 closest to the indoor side X2. The indoor-side horizontal extension plate 328 extends horizontally from the indoor-side X2 end of the lower surface of the hollow portion 325 toward the indoor side X2, and is formed in a planar shape over the entire longitudinal area of ​​the attachment lower frame 32. As shown in FIG. 2 , when fixing the attachment frame 3 to the building 100 (frame), the indoor-side horizontal extension plate 328 is disposed so that the mounting screws 35 pass through it. In this way, the indoor-side horizontal extension plate 328 is fixed to the building 100 (frame) by the mounting screws 35.

[0056] The vertical attachment frame 33 is arranged in a so-called vertically extending structure, with its longitudinal ends positioned outside the longitudinal ends of the upper attachment frame 31 and the lower attachment frame 32. As shown in Figures 3, 12, and 13, the vertical attachment frame 33 has a hollow portion 331, an outdoor left-right extending plate portion 332 (a facing direction extending plate portion), an indoor indoor extending portion 333 (extending plate), an indoor side extending portion 334, and a hook piece 335.

[0057] The hollow portion 331 of the vertical attachment frame 33 is formed in a hollow shape like a long, narrow rectangle extending in the indoor-outdoor direction. An outer peripheral plane 331a is formed on the outer surface in the left-right direction of the hollow portion 331. The outer peripheral plane 331a is formed on the outer peripheral side of the attachment frame 3 in the vertical attachment frame 33. The outer peripheral plane 331a faces the existing vertical frame 63 and is formed in a flat shape extending in the indoor-outdoor direction and in the up-down direction. The outer peripheral plane 331a is formed over the entire longitudinal area of ​​the vertical attachment frame 33 and faces outward in the left-right direction.

[0058] The outer peripheral plane 331a is formed flat so as not to come into contact with the inner peripheral side of the existing frame 6 when the attachment frame 3 with the new frame 2 attached thereto is attached to the inner peripheral side of the existing frame 6. In this embodiment, as shown in Figures 12 and 13, an L-shaped space S3 is formed on the outer peripheral side of the vertical attachment frame 33 from the indoor side X2 toward the outdoor side X1, as shown by the virtual line (chain double-dashed line) by the space outside in the left-right direction of the outer peripheral plane 331a and the space on the indoor side of the outdoor side left-right extending plate portion 332. The L-shaped space S3 is formed on the outer peripheral side of the vertical attachment frame 33 along the indoor side X2 surface of the outdoor side left-right extending plate portion 332 and the outer peripheral plane 331a.

[0059] This allows the existing vertical frame 63 to fit within the L-shaped space S3, making it possible to easily attach the attachment frame 3 with the new frame 2 attached to the existing frame 6. In particular, in this embodiment, as shown in Fig. 3, the outer peripheral side flat surface 331a is formed along the indoor / outdoor direction of the attachment vertical frame 33, so that the attachment vertical frame 33 with the new vertical frame 23 attached can be attached to the existing vertical frame 63 in a manner that does not get in the way during attachment, in accordance with existing frames 6 of various shapes.

[0060] 3, the indoor-side extending portion 333 extends toward the indoor side X2 from the outer end of the hollow portion 331 in the left-right direction, that is, the end on the indoor side X2. The indoor-side flat surface 333a is formed in a flat shape over the entire longitudinal area of ​​the vertical attachment frame 33.

[0061] When fixing the attachment frame 3 to the building 100 (skeleton), the mounting screws 36 are inserted through the indoor-side indoor-direction extending portion 333. As a result, the indoor-side indoor-direction extending portion 333 is fixed to the building 100 (skeleton) by the mounting screws 36. If a gap is formed between the indoor-side indoor-direction extending portion 333 and the frame member 101, a spacer member 361 is disposed. The spacer member 361 is made up of a plurality of sheets, and the thickness of the sheets for filling the gap is set according to the size of the gap between the indoor-side indoor-direction extending portion 333 and the frame member 101.

[0062] A pair of engaging protrusions 331b arranged separately on the left and right sides is formed on the outdoor side X1 surface of the hollow portion 331. A pair of engaging protrusions 53a of the outdoor decorative cover 53 is engaged with the pair of engaging protrusions 331b to be attached.

[0063] The outdoor left-right extending plate portion 332 is formed in a plate shape extending outward in the left-right direction from the end of the outdoor side X1 of the hollow portion 331. The outdoor left-right extending plate portion 332 is arranged on the outdoor side X1 and extends in the left-right direction (view direction). The indoor side extending portion 334 extends inward in the left-right direction from the end of the indoor side X2 of the hollow portion 331.

[0064] The hooking piece 335 protrudes toward the outside X1 from the inner end in the left-right direction of the outside side X1 of the hollow portion 331. When attaching the attachment vertical frame 33 to the new vertical frame 23, the hooking piece 335 is hooked onto the hooking piece 231 provided at the end of the outside side X1 of the new vertical frame 23, as shown in Figures 12 and 13. Note that the structure for fixing the attachment vertical frame 33 to the new vertical frame 23 may be a structure for fastening with screws or the like, instead of a hooking structure.

[0065] 2 and 3, the indoor-side decorative members 41, 42, 43 are cover members attached to the resin angle members 213, 223, 233 of the new frame 2, respectively. The indoor-side decorative members 41, 42, 43 cover the indoor side faces f1, f2, f3 that face the indoor side X2, formed by the new frame 2 and the attachment frame 3. The boundary between the indoor-side decorative members 41, 42, 43 and the inner peripheral surface of the frame member 101 is shielded by a parting material 45 with an L-shaped cross section that is fixed to the frame member 101.

[0066] The indoor-side decorative members 41, 42, 43 have a cover main body 46 and a cover mounting portion 47. The cover mounting portion 47 of each of the indoor-side decorative members 41, 42, 43 is attached to the resin angle members 213, 223, 233 of the new frame 2. When attached to the resin angle members 213, 223, 233, the cover main body 46 has predetermined spaces S11, S12, S13 between it and the indoor side surfaces f1, f2, f3 of the new frame 2 and the attachment frame 3. The spaces S11, S12, S13 extend along the longitudinal direction of the indoor-side decorative members 41, 42, 43, respectively.

[0067] Heat insulating material is provided inside the indoor-side decorative components 41, 42, and 43. Specifically, first heat insulating material 46a is housed in the spaces S11, S12, and S13 between the cover body 46 and the indoor side surfaces f1, f2, and f3, respectively. The first heat insulating material 46a is made of resin, specifically extruded polystyrene foam, bead-method polystyrene, urethane resin, or rubber, and is housed throughout the entire longitudinal length of the spaces S11, S12, and S13. By housing the first heat insulating material 46a in the spaces S11, S12, and S13, heat transfer from the outdoor side X1 of the remodeled fitting 1 to the indoor side X2 is suppressed, improving the heat insulating performance of the remodeled fitting 1.

[0068] The cover bodies 46 of the indoor-side decorative members 41, 42, and 43 each have a cover body hollow portion 461 extending in the longitudinal direction of the cover body 46. The cover body hollow portion 461 is formed in a rectangular cross section and is located on the inner periphery and at a corner on the indoor side X2 of each of the indoor-side decorative members 41, 42, and 43. The cover body hollow portion 461 extends along the longitudinal direction of each of the indoor-side decorative members 41, 42, and 43.

[0069] The interior of each cover body hollow portion 461 is filled with second insulating material 46b. The second insulating material 46b is made of, for example, resin, specifically, extruded polystyrene foam, bead-method polystyrene, urethane resin, or rubber, and is filled throughout the entire longitudinal area of ​​the cover body hollow portion 461. Filling the cover body hollow portion 461 with the second insulating material 46b further suppresses heat transfer from the outdoor side X1 to the indoor side X2 of the renovated fitting 1, further improving the insulating performance of the renovated fitting 1. Only the first insulating material 46a or only the second insulating material 46b may be provided inside the indoor-side decorative members 41, 42, and 43.

[0070] 19, when the space S11 has a protrusion S11a that protrudes inward, the first insulating material 46a may have a shape that fits into the protrusion S11a. This allows the space S11 to be filled as much as possible with the first insulating material 46a, further suppressing the transfer of heat from the outside side X1 of the remodeled fitting 1 to the inside side X2, and further improving the insulating performance of the remodeled fitting 1.

[0071] The protrusion may be a protruding piece or screw protruding from the indoor side X2 of at least one of the new frame 2 and the attachment frame 3 toward the space S11, S12, S13, or it may be a protruding portion of the cover main body 46 that is integrally formed with the cover main body 46 and protrudes into the space S11, S12, S13.

[0072] The first insulating material 46a, which has a shape that fits into the protrusion S11a, is formed in advance in a factory so as to have a shape that corresponds to the shape of the protrusion S11a that protrudes into the inside of the space S11. The first insulating material 46a having such a configuration can also be applied to the spaces S12 and S13. The number of protrusions into which the first insulating material 46a fits is not limited to one, and multiple protrusions may be provided inside the spaces S11, S12, and S13.

[0073] Although not shown, the first insulating material 46a may be pre-formed into a rectangular parallelepiped shape larger than the volume of the spaces S11, S12, and S13. The first insulating material 46a can then be forcibly press-fitted (inserted by applying force and deformation) into the spaces S11, S12, and S13 using the elasticity of the first insulating material 46a. This allows the first insulating material 46a to be tightly fitted into the spaces S11, S12, and S13 without any gaps, further improving the insulating performance. Because the first insulating material 46a is fixed to the protrusion S11a by press-fitting, there is little risk of it falling off when the interior decorative components 41, 42, and 43 are attached to the interior side X2 of the new frame 2, improving installation efficiency. Furthermore, the press-fitted first insulating material 46a does not rattle in the spaces S11, S12, and S13, improving the commercial value of the remodeled fitting 1. The first insulating material 46a made of a rectangular parallelepiped can be applied to spaces having various internal shapes by press-fitting, and is therefore highly versatile.

[0074] In the construction method for the remodeled fitting 1 of this embodiment, the first insulating material 46a is arranged along the indoor sides f1, f2, and f3 of the new frame 2 and the attachment frame 3 before attaching the indoor-side decorative members 41, 42, and 43. The second insulating material 46b is pre-filled inside the hollow portion 461 of the cover body at a manufacturing plant or the like for the indoor-side decorative members 41, 42, and 43. After the first insulating material 46a is arranged in the spaces S11, S12, and S13, the indoor-side decorative members 41, 42, and 43 are attached to the resin angle members 213, 223, and 233 of the new frame 2 from the indoor side X2 of the remodeled fitting 1, and each is attached with a screw 48. This adds additional insulating function to the indoor side X2 of the remodeled fitting 1, easily improving the insulating performance of the remodeled fitting 1.

[0075] Next, we will explain how to attach the attachment upper frame 31 by hooking it onto a new upper frame. The new upper frame 20 shown in Figures 16 and 17 is a new upper frame for a decorative window. This new upper frame 20 has a hook piece 215 on the outside side X1 that can engage with the L-shaped hook piece 316a of the attachment upper frame 31. The hook piece 215 protrudes toward the outside side X1.

[0076] When attaching the upper attachment frame 31 to a new upper frame 20 having the hooking pieces 215, the L-shaped hooking pieces 316a of the upper attachment frame 31 are hooked onto the hooking pieces 215 of the new upper frame 20 on the outside side X1 of the new upper frame 20. That is, in the case of a new upper frame 21 without hooking pieces, the upper attachment frame 31 is attached by placing the outside-side lower abutment pieces 316b provided at the lower ends of the L-shaped hooking pieces 316a on the upper surface 21a of the outside side X1 of the new upper frame 21. In the case of a new upper frame 20 having the hooking pieces 215, the upper attachment frame 31 is attached by placing the L-shaped hooking pieces 316a on the upper surface 21a of the hooking pieces 215 of the new upper frame 20 on the outside side X1 of the new upper frame 20.

[0077] In this way, the attachment upper frame 31 of this embodiment can be used in both cases where the newly installed upper frame has a hook and where it does not have a hook, and the same attachment strength can be ensured for both types of newly installed upper frames. Since the outdoor lower abutment piece 316b is integrally provided with the lower end of the L-shaped hook piece 316a, the structure of the attachment upper frame 31 can be simplified.

[0078] As shown in Fig. 2, a reinforcing member 7 for bearing the load of the new frame 2 and the attachment frame 3 is provided between the attachment lower frame 32 and the existing lower frame 62 in the attachment frame 3 attached to the outer periphery of the new frame 2. The reinforcing member 7 is formed from a load-bearing material such as hard resin, ceramics, CFRP (Carbon Fiber Reinforced Plastics), metal, etc., and is formed in the shape of a plate with a predetermined width in the projection direction. The reinforcing member 7 may be a long member extending along the longitudinal direction of the attachment lower frame 32, or may be a plurality of short members arranged at intervals along the longitudinal direction of the attachment lower frame 32.

[0079] As shown in FIG. 11 , flat surfaces 320a, 320b are formed on the underside of the attachment lower frame 32 in this embodiment, extending from the outdoor frame portion 32A facing the existing lower frame 62 to the midpoint of the indoor frame portion 32B. A step portion 320c bent downward is formed at the end of the flat surface 320b on the indoor frame portion 32B side, facing the indoor side X2. An engagement piece 320d bent in an L-shape toward the indoor side X2 is provided on the underside of the outdoor frame portion 32A. An engagement piece 320e extending toward the outdoor side X1 is provided at the lower end of the step portion 320c of the indoor frame portion 32B. The reinforcing member 7 is disposed in the space surrounded by the flat surfaces 320a, 320b and the engagement pieces 320d, 320e and engages with the engagement pieces 320d, 320e. This positions the reinforcing member 7 on the outer peripheral surface side of the attachment lower frame 32.

[0080] As shown in FIG. 2 , the end of the reinforcing member 7 on the exterior side X1 is disposed between the flat surface 320a of the exterior frame portion 32A and the guide rail 622 of the existing lower frame 62. The guide rail 622 is a protruding piece disposed below the exterior frame portion 32A and protruding upward from the existing lower frame 62. The end of the reinforcing member 7 on the interior side X2 is disposed between the flat surface 320b of the interior frame portion 32B and the frame member 101. This allows the reinforcing member 7 to support from below the entire load of the new frame 2 and the attachment frame 3, particularly the load applied to the attachment lower frame 32. Furthermore, the reinforcing member 7 of this embodiment is placed on the guide rail 622 of the existing lower frame 62 on the exterior side X1 and on the frame member 101 on the interior side X2, so that the entire load of the new frame 2 and the attachment frame 3 can be stably supported.

[0081] The reinforcing member 7 is arranged across the outer frame portion 32A and the inner frame portion 32B of the attachment lower frame 32, which are connected via the resin bridge member 321, so as to cover the underside of the resin bridge member 321. This reinforces the portion of the resin bridge member 321 that is relatively vulnerable to loads from above. Furthermore, if the reinforcing member 7 is made of a nonmetallic material with low thermal conductivity, there is no risk of heat being transferred between the outer frame portion 32A and the inner frame portion 32B via the reinforcing member 7. If the reinforcing member 7 contains a metallic material, it is desirable to provide an insulating layer 71 made of a nonmetallic material with low thermal conductivity, such as resin or rubber, at least on the upper surface that abuts against the attachment lower frame 32, as shown in FIG. 18 .

[0082] The reinforcing member 7 is accommodated in the reinforcing member accommodation space S30 of the attachment lower frame 32 and fixed to the flat surface 320b of the indoor frame portion 32B with screws 7a, as shown in Fig. 2. The reinforcing member 7 can be attached to the attachment lower frame 32 before it is attached to the new lower frame 22, improving workability when assembling the renovated fitting 1. However, since the attachment lower frame 32 of this embodiment has the reinforcing member 7 engaged with the engagement pieces 320d, 320e, the reinforcing member 7 does not necessarily have to be fixed with screws 7a. The reinforcing member 7 may also be adhered to the attachment lower frame 32 with double-sided tape or the like.

[0083] 2, 11, and 18, the lower surface of the outdoor frame portion 22A of the new lower frame 22 has an inclined surface 227 that slopes downward from the outdoor side X1 toward the indoor side X2. The inclined surface 227 is disposed on the indoor side X2 and on the underside of a first hollow portion 228 provided in the outdoor frame portion 22A of the new lower frame 22, and is formed by a protruding piece that slopes downward toward the indoor side X2.

[0084] A spacer member 8 is provided on the upper surface of the indoor / outdoor extending portion 323 of the attachment lower frame 32 corresponding to the lower side of the inclined surface 227 of the new lower frame 22. The spacer member 8 is formed, for example, in a block shape from a resin material, and has an upper surface 81 that abuts against the inclined surface 227 when the attachment lower frame 32 is attached to the new lower frame 22 and is inclined downward toward the indoor side X2 along the inclination of the inclined surface 227. The spacer member 8 may be a long member that extends along the longitudinal direction of the attachment lower frame 32, or may be a plurality of short members that are arranged at intervals along the longitudinal direction of the attachment lower frame 32.

[0085] As shown in Fig. 18, the spacer member 8 has a protrusion 82 that protrudes downward from the end on the outdoor side X1. The protrusion 82 is inserted into and engages with a groove 323a provided on the upper surface of the indoor / outdoor extending portion 323 of the outdoor frame portion 32A of the attachment lower frame 32, and is attached to the indoor / outdoor extending portion 323. This allows the spacer member 8 to be attached in advance to the attachment lower frame 32 before being attached to the new lower frame 22, improving workability when assembling the renovated fitting 1. In this embodiment, the groove 323a is formed by a tapping hole that extends along the longitudinal direction of the attachment lower frame 32.

[0086] When the attachment lower frame 32 is attached to the outer peripheral surface of the new lower frame 22, the inclined surface 227 of the new lower frame 22 is placed in contact with the upper surface 81 of the spacer member 8 of the attachment lower frame 32, as shown in Figure 18. At this time, the load F2 directed toward the spacer member 8 is directed toward the indoor side X2 due to the contact between the inclined surface 227 of the new lower frame 22 and the upper surface 81 of the spacer member 8. Therefore, the attachment lower frame 32 can bear the load of the new frame 2 on the indoor side X2 as much as possible.

[0087] As shown in Figure 2, when the fixing screw 32b passing through the indoor-side upward extension plate 327 of the attachment lower frame 32 is screwed from the indoor-side X2 toward the outdoor side X1 into the indoor-side downward extension plate 226 of the new lower frame 22, a force F1 acting from the indoor side X2 toward the outdoor side X1 acts on the new lower frame 22, as shown in Figure 18, causing the new lower frame 22 to try to move toward the outdoor side X1. At this time, the inclined surface 227 of the new lower frame 22 and the upper surface 81 of the spacer member 8 are inclined upward from the indoor side X2 toward the outdoor side X1, effectively preventing the new lower frame 22 from moving toward the outdoor side X1.

[0088] 2 and 18, the spacer member 8 is disposed above the reinforcing member 7. This allows the load F1 applied to the attachment lower frame 32 via the spacer member 8 to be stably supported by the reinforcing member 7 on the underside of the attachment lower frame 32. Moreover, the reinforcing member 7 in this embodiment is placed on the guide rail 622 of the existing lower frame 62, and the spacer member 8 is disposed directly above this guide rail 622. Therefore, the load F1 applied to the attachment lower frame 32 via the spacer member 8 can be supported by the reinforcing member 7 even more stably.

[0089] The remodeling fitting 1 according to this embodiment has the following advantages. Specifically, the remodeling fitting 1 is attached to an existing frame 6 installed in an opening in a building 100, and includes an attachment frame 3 attached to the inner periphery of the existing frame 6, a new frame 2 attached to the inner periphery of the attachment frame 3, and indoor-side decorative members 41, 42, 43 that are resin cover members covering the indoor sides f1, f2, f3 of the attachment frame 3 and the new frame 2. Heat insulating material (at least one of a first insulating material 46a and a second insulating material 46b) is provided inside the indoor-side decorative members 41, 42, 43. This configuration suppresses heat transfer from the outdoor side X1 of the remodeling fitting 1 to the indoor side X2, improving the insulating performance of the remodeling fitting 1.

[0090] In this embodiment, spaces S11, S12, S13 extending along the longitudinal direction of the indoor-side decorative members 41, 42, 43 are provided between the indoor side faces f1, f2, f3 and the indoor-side decorative members 41, 42, 43, and first insulating materials 46a are housed in the spaces S11, S12, S13. As a result, the first insulating material 46a housed in the spaces S11, S12, S13 suppresses heat transfer from the outdoor side X1 of the remodeled fitting 1 to the indoor side X2, improving the insulating performance of the remodeled fitting 1.

[0091] In this embodiment, the first insulating material 46a has a shape that fits into the protrusions S11a that protrude toward the inside of the spaces S11, S12, and S13. This allows the spaces S11, S12, and S13 to be filled as much as possible with the first insulating material 46a, further suppressing heat transfer from the outside side X1 of the renovated fitting 1 to the inside side X2, and further improving the insulating performance of the renovated fitting 1.

[0092] In this embodiment, the indoor-side decorative components 41, 42, 43 have a cover body hollow portion 461 extending along the longitudinal direction of the indoor-side decorative components 41, 42, 43, and the second insulating material 46b is filled in the cover body hollow portion 461. As a result, the second insulating material 46b filled in the cover body hollow portion 461 suppresses heat transfer from the outdoor side X1 to the indoor side X2 of the renovated fitting 1, improving the insulating performance of the renovated fitting 1.

[0093] In this embodiment, the attachment frame 3 is attached to the inner periphery of the existing frame 6 in a state where it is assembled around the outer periphery of the new frame 2, which is constructed around four sides. This makes it possible to easily construct the new frame 2 on the inner periphery of the existing frame 6.

[0094] Although a preferred embodiment of the present disclosure has been described above, the present disclosure is not limited to the above embodiment and can be modified as appropriate. For example, in the attachment frame 3, the resin bridge material is provided only on the upper attachment frame 31 and the lower attachment frame 32, but it may also be provided on the pair of vertical attachment frames 33 in the same manner.

[0095] In the above embodiment, the remodeling fixture 1 is described as being applied to a double sliding window remodeling sash, but the present invention is not limited to this. The remodeling fixture may be applied to, for example, an open-close type remodeling fixture in which the door rotates around a rotation axis to open and close, or a vertical sliding type remodeling fixture. The remodeling fixture may also be applied to, for example, a fixed type remodeling fixture that is fixedly attached to the frame without opening or closing. [Explanation of symbols]

[0096] 1 Renovated fittings, 2 New frame, 3 Attachment frame, 6 Existing frame, 41, 42, 43 Indoor decorative member (cover member), 46a First insulating material, 43b Second insulating material, S11, S12, S13 Space portion, 100 Building

Claims

1. A renovation fixture that is attached to an existing frame installed in an opening in a building, an attachment frame attached to the inner periphery of the existing frame; a new frame attached to the inner circumferential side of the attachment frame; a resin cover member that covers the interior side surfaces of the attachment frame and the new frame; a resin angle member covering the indoor-side inner peripheral surface of the new frame; The cover member is fixed to the attachment frame and the new frame via the resin angle member, A retrofitted building fixture in which insulation material is provided on the inside of the cover member.

2. A space extending along the longitudinal direction of the cover member is provided between the indoor side surface and the cover member, The retrofit fitting according to claim 1 , wherein the space contains a first insulating material.

3. The remodeled fitting according to claim 2, wherein the first insulating material has a shape that fits into a protrusion that protrudes toward the inside of the space.

4. The cover member has a hollow portion extending along the longitudinal direction of the cover member, The renovated fitting according to any one of claims 1 to 3, wherein the hollow portion is filled with a second insulating material.

5. The remodeling fixture described in any one of claims 1 to 4, wherein the attachment frame is attached to the inner periphery of the existing frame in a state where it is assembled around the outer periphery of the new frame, which is assembled around four sides.

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