Renovation joinery and installation methods for renovation joinery

Abstract

To provide a remodeling fitting capable of improving efficiency of a construction work and saving a construction cost and a remodeling fitting construction method.SOLUTION: A remodeling fitting is formed by fitting a new window frame to the inside of an existing window frame. The existing window frame has an existing mullion, a first existing vertical frame disposed on one side part of the existing mullion, and a second existing vertical frame disposed on the other side part of the existing mullion. The new window frame has: a first vertical frame supported by the first existing vertical frame; a second vertical frame supported by the second existing vertical frame; a first architrave supported on an indoor side of the first vertical frame; and a second architrave supported on an indoor side of the second vertical frame. The first architrave and the second architrave have protruding pieces that protrude so as to face each other on a side closer to the indoor than an indoor side aspect face of the existing mullion.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a retrofit fitting and a construction method thereof.

Background Art

[0002] In buildings such as buildings and houses, a continuous window in which a plurality of windows are arranged in parallel may be installed. The continuous window includes a mullion standing between the left and right window frames (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since the fitting of Patent Document 1 is configured to construct a new window frame after cutting and removing an existing mullion, the construction of the retrofit fitting becomes a large-scale operation and the retrofit cost is also high. Further, in such a configuration, it is necessary to perform new waterproofing treatment and appearance treatment on the cut portion of the mullion, and the retrofit cost further increases.

[0005] The present invention has been made in consideration of the above problems of the prior art, and an object thereof is to provide a retrofit fitting and a construction method thereof that can improve the efficiency of construction work and reduce the construction cost.

Means for Solving the Problems

[0006] A remodeling joinery according to a first aspect of the present invention is a remodeling joinery in which a new window frame is installed inside an existing window frame, wherein the existing window frame comprises an existing mullion, a first existing vertical frame provided on one side of the existing mullion, and a second existing vertical frame provided on the other side of the existing mullion, and the new window frame comprises a first vertical frame supported by the first existing vertical frame, a second vertical frame supported by the second existing vertical frame, a first frame supported on the interior side of the first vertical frame, and a second frame supported on the interior side of the second vertical frame, wherein the first frame and the second frame each have a protruding piece that protrudes from each other on the interior side of the interior surface of the existing mullion.

[0007] A method for constructing a remodeled window fitting according to a second aspect of the present invention is a method for constructing a remodeled window fitting by attaching a new window frame to an existing window frame, comprising the steps of: supporting a first vertical frame on a first existing vertical frame provided on one side of an existing mullion; supporting a second vertical frame on a second existing vertical frame provided on the other side of the existing mullion; connecting a first frame to the interior side of the first vertical frame and positioning a protruding piece provided on the first frame on the interior side of the existing mullion; connecting a second frame to the interior side of the second vertical frame and positioning a protruding piece provided on the second frame on the interior side of the existing mullion, and positioning the protruding pieces of the first frame and the second frame so as to face each other. [Effects of the Invention]

[0008] According to the present invention, the efficiency of construction work can be improved and construction costs can be reduced. [Brief explanation of the drawing]

[0009] [Figure 1] This is a cross-sectional view of a remodeled door according to the first embodiment. [Figure 2] Figure 1 is a vertical cross-sectional view of a fixed window in the remodeled building fixture. [Figure 3] Figure 1 is a vertical cross-sectional view of a sliding window in a remodeled building fixture. [Figure 4] Figure 1 is an enlarged cross-sectional view of the existing mullion and its surrounding area of ​​the remodeled joinery. [Figure 5] This is an enlarged cross-sectional view of the gap-concealing member and its surrounding area according to the first modified example. [Figure 6] This is an enlarged cross-sectional view of the gap-concealing member and its surrounding area according to the second modified example. [Figure 7] This is an enlarged cross-sectional view of the gap-concealing member and its surrounding area according to the third modified example. [Figure 8] This is a flowchart showing an example of the installation procedure for a remodeled door and window according to the first embodiment. [Figure 9] This is an enlarged cross-sectional view of the existing mullion and its surrounding area in the remodeled joinery according to the second embodiment. [Figure 10] Figure 9 is an enlarged cross-sectional view of the gap-concealing member and its surrounding area related to the first modified example of the remodeled joinery shown. [Figure 11] Figure 9 shows an enlarged cross-sectional view of the gap-concealing member and its surrounding area related to the second modified example of the remodeled joinery. [Figure 12] Figure 9 is an enlarged cross-sectional view of the gap-concealing member and its surrounding area related to the third modified example of the remodeled joinery shown. [Figure 13] This is a flowchart showing an example of the installation procedure for remodeled joinery according to the second embodiment. [Modes for carrying out the invention]

[0010] The following describes in detail preferred embodiments of the renovation joinery and the method of construction thereof according to the present invention, with reference to the attached drawings.

[0011] First, the remodeling fixture 10 according to the first embodiment will be described.

[0012] As shown in FIGS. 1 to 3, the retrofit fitting 10 according to the present embodiment is a fitting in which an existing fitting previously installed in an opening 12a of a building frame 12 is removed leaving a window frame (existing window frame 14), and a new window frame (new window frame 16) and shoji (new shoji 18 to 20) are attached inside the remaining existing window frame 14. The retrofit fitting 10 is, for example, a multi-panel window installed in window retrofit work for a building or an apartment house, and may have three or more panels.

[0013] In the present application, the depth direction refers to the depth direction of the retrofit fittings 10 and 10A (the direction indicated by arrow Z in the figure), and the depth plane refers to a plane extending along the depth direction. The finding direction is a direction orthogonal to the depth direction. In the case of vertical frames 26d, 27c, etc. that are long in the vertical direction, it refers to the left-right direction (the direction indicated by arrow X in the figure) orthogonal to the longitudinal direction, and in the case of upper frames 26a, 27a, etc. that are long in the left-right direction, it refers to the up-down direction (the direction indicated by arrow Y in the figure) orthogonal to the longitudinal direction. The finding plane refers to a plane along the finding direction. The inside of the frame refers to the inner part of new frames 26, 27, etc. that are frame-shaped members. The outside of the frame refers to the outer part of new frames 26, 27, etc. that are frame-shaped members. The in-frame direction refers to the direction from the outside of the frame of the frame-shaped member toward the inside of the frame, and the out-frame direction refers to the direction from the inside of the frame of the frame-shaped member toward the outside of the frame.

[0014] First, the existing window frame 14 will be described.

[0015] The existing window frame 14 includes an existing vertical post 22, and a first existing frame 24 and a second existing frame 25 arranged side by side left and right with the existing vertical post 22 interposed therebetween. The existing window frame 14 is the window frame of an existing fitting installed before the construction of the retrofit fitting 10. For example, existing shoji are supported on the existing frames 24 and 25 respectively, and a multi-panel window in which a FIX window and a sliding window are arranged side by side left and right is formed.

[0016] As shown in FIGS. 1 and 4, the existing vertical post 22 has a vertical post main body 22a having a substantially T-shaped cross section, and an indoor side portion 22b connected to the indoor side of the vertical post main body 22a. The vertical post main body 22a and the indoor side portion 22b are, for example, extruded members made of an aluminum alloy. The existing vertical post 22 is fixed to the building frame 12 before the attachment of the new window frame 16.

[0017] The square upright body 22a has a finding plate portion 22a1 and a prospective plate portion 22a2. The finding plate portion 22a1 is provided along the XY direction and forms the outdoor-side finding surface 22c of the existing square upright 22. The prospective plate portion 22a2 is provided along the YZ direction and protrudes indoors from the left and right central portions of the finding plate portion 22a1. The indoor-side portion 22b has a connecting plate 22b1 and a finding plate 22b2. The connecting plate 22b1 is connected to the indoor-side end of the prospective plate portion 22a2 with a screw 23. The finding plate 22b2 is connected to the indoor-side surface of the connecting plate 22b1 with a screw 23. The finding plate 22b2 forms the indoor-side finding surface 22d of the existing square upright 22.

[0018] As shown in FIGS. 1, 2, and 4, the first existing frame 24 is provided on the left side of the existing square upright 22 in FIG. 1 and constituted the window frame of the FIX window before renovation. The first existing frame 24 has an existing upper frame 24a, an existing lower frame 24b, and the left and right existing vertical frames 24c, 24d connected in a four-sided frame shape, forming a rectangular opening.

[0019] As shown in FIGS. 1, 3, and 4, the second existing frame 25 is provided on the right side of the existing square upright 22 in FIG. 1 and constituted the window frame of the sliding window before renovation. The second existing frame 25 has an existing upper frame 25a, an existing lower frame 25b, and the left and right existing vertical frames 25c, 25d assembled in a four-sided frame, forming a rectangular opening. Each of the frames 24a to 24d, 25a to 25d is, for example, an extruded profile of an aluminum alloy and is fixed to the building body 12 before the installation of the new window frame 16.

[0020] Note that the existing square upright 22 and the existing frames 24, 25 are part of the existing fixtures fixed to the building body 12 before renovation, and various configurations other than those shown in FIGS. 1 to 4 are assumed for their configurations. That is, the shape, structure, prospective dimensions (Z-direction dimensions), finding dimensions (X-direction dimensions), etc. of the existing square upright 22 and the existing frames 24, 25 are not limited to those described in this embodiment.

[0021] Next, the new window frame 16 will be described.

[0022] The newly installed window frame 16 comprises a first newly installed frame 26 and a second newly installed frame 27, which are arranged on the left and right sides of the existing mullion 22 and existing vertical frames 24d and 25c.

[0023] First, as shown in Figures 1, 2, and 4, the first newly installed frame 26 is located to the left of the existing mullion 22 in Figure 1 and attached to the inside of the first existing frame 24, forming the window frame of the renovated fixed window. The first newly installed frame 26 consists of an upper frame 26a, a lower frame 26b, and left and right vertical frames 26c and 26d connected in a perimeter frame shape, forming a rectangular opening. Each frame 26a to 26d is, for example, an extruded aluminum alloy profile, and is a composite structure with resin material attached to the part exposed on the interior side.

[0024] As shown in Figure 2, the upper frame 26a is connected to the existing upper frame 24a of the first existing frame 24 via a cover material 28, and is thereby supported by the building structure 12. The cover material 28 may be omitted, in which case the upper frame 26a may be directly fixed to the existing upper frame 24a. The cover material 28 is, for example, an extruded profile of an aluminum alloy and is formed in a substantially T-shape in cross-section. The cover material 28 has a fin 28a that protrudes outward from a position closer to the outside than the center of the plate portion extending in the depth direction, and a plate piece 28b that protrudes inward from the outside end.

[0025] The upper frame 26a has an outer frame portion 31 and an inner frame portion 32 connected by screws 30, forming a hollow space between them. The outer frame portion 31 is connected to the cover material 28 using screws 29. A pair of protruding pieces 32a and 32b are provided on the inner frame surface of the inner frame portion 32 in the depth direction. The protruding pieces 32a and 32b hold the face material 18a of the newly installed sash 18. A resin attachment 32b1 is attached to the indoor side protruding piece 32b. A resin angle 32b2 is attached to the indoor side end of the inner frame portion 32. Reference numeral 33 in Figure 2 indicates a screw connecting the cover material 28 and the existing upper frame 24a.

[0026] As shown in Figure 2, the lower frame 26b is connected by screws 34 to an attachment material 26b1 which is screwed to the inside of the existing lower frame 24b of the first existing frame 24, and is thereby supported by the existing lower frame 24b. The lower frame 26b has a cross-sectional shape that is bent in a roughly stepped manner from the outside to the inside.

[0027] As shown in Figure 4, the vertical frame 26d is connected to the existing vertical frame 24d of the first existing frame 24 via the cover material 36, and is thereby supported by the existing mullion 22. In other words, the first new frame 26 has a new vertical member 37 composed of the vertical frame 26d and the cover material 36, and this new vertical member 37 is supported by the existing vertical frame 24d. The new vertical member 37 may be composed only of the vertical frame 26d without using the cover material 36, or it may have other members in addition to the vertical frame 26d and the cover material 36.

[0028] The cover material 36 is, for example, an extruded profile of an aluminum alloy, and is formed in a substantially T-shape in cross-section. The cover material 36 has a facing plate portion 36a along the Z direction, a fin 36b that protrudes outward from the frame from a point closer to the outside than the center of the facing plate portion 36a, and a protruding piece 36c that bends inward from the outside end of the facing plate portion 36a. The facing plate portion 36a of the cover material 36 is connected to the existing vertical frame 24d using screws 38.

[0029] The vertical frame 26d is constructed in a roughly rectangular shape by an outer frame portion 42 and an inner frame portion 43 that are connected to each other. A pair of protruding pieces 43a and 43b are provided on the inner frame surface of the inner frame portion 43 in the depth direction. The protruding pieces 43a and 43b hold the facing material 18a of the newly installed sash 18. A resin attachment 43b1 is attached to the indoor side protruding piece 43b. A resin angle 44 is attached to the indoor side end of the inner frame portion 43. Reference numeral 45 in Figure 4 indicates a screw that connects the vertical frame 26d (inner frame portion 43) to the cover material 36. Reference numeral 46 in Figure 4 indicates a screw that connects the outer frame portion 42 and the inner frame portion 43 of the vertical frame 26d.

[0030] As shown in Figure 1, the vertical frame 26c is connected to the existing vertical frame 24c of the first existing frame 24 by screws 47 via a cover material. The vertical frame 26c may be symmetrical to the vertical frame 26d described above. Furthermore, the cover material connected to the vertical frame 26c may be the same or similar as the cover material 36 connected to the other vertical frame 26d described above, except that it is symmetrical; therefore, the same reference numeral 36 is used in Figure 1 and a detailed explanation is omitted.

[0031] As shown in Figures 1 and 2, the newly installed sash 18 in this embodiment is a fixed window in which a facing material 18a is fitted into each of the frames 26a to 26d of the first newly installed frame 26. The facing material 18a is, for example, a double-glazed glass with two panes of glass placed side by side on the inside and outside with a spacer in between.

[0032] Here, we will explain the waterproofing structure between the first existing frame 24 and the first new frame 26.

[0033] As shown in Figure 2, the space between the upper frames 24a and 26a is sealed with waterproofing materials 48 and 49. Waterproofing material 48 seals the space between the fin 28a of the cover material 28 and the outdoor-facing surface 24a1 of the existing upper frame 24a. Waterproofing material 49 seals the space between the indoor-facing surface 28b1 of the plate piece 28b of the cover material 28 and the outdoor-facing surface 26a1 of the upper frame 26a.

[0034] As shown in Figure 2, the area between the lower frames 24b and 26b is sealed with a sealing material 50 attached to the lower outdoor end of the lower frame 26b, with its tip protruding toward the existing lower frame 24b.

[0035] As shown in Figure 4, the space between vertical frames 24d and 26d is sealed with waterproofing materials 52 and 53. Waterproofing material 52 seals the space between the fin 36b of the cover material 36 and the outdoor surface 24d1 of the existing vertical frame 24d. Waterproofing material 53 seals the space between the indoor surface 36d of the protruding piece 36c of the cover material 36 and the outdoor surface 26d1 of the vertical frame 26d. As shown in Figure 1, the waterproofing structure between vertical frames 24c and 26c can be symmetrical to that between vertical frames 24d and 26d shown in Figure 4, so the same reference numerals 52 and 53 are used for the waterproofing materials, and a detailed explanation is omitted.

[0036] In this way, the renovated joinery 10 has a high watertight performance because the space between the first newly installed frame 26 and the first existing frame 24 is sealed.

[0037] Next, as shown in Figures 1, 3, and 4, the second newly installed frame 27 is located to the right of the existing mullion 22 in Figure 1 and attached to the inside of the second existing frame 25, forming the window frame of the renovated sliding window. The second newly installed frame 27 consists of an upper frame 27a, a lower frame 27b, and left and right vertical frames 27c and 27d connected in a perimeter frame shape, forming a rectangular opening. Each frame 27a to 27d is, for example, an extruded aluminum alloy profile, and is a composite structure with resin material attached to the part exposed on the interior side.

[0038] As shown in Figure 3, the upper frame 27a is connected to the existing upper frame 25a of the second existing frame 25 via a cover material 56, and is thereby supported by the building structure 12. The cover material 56 may be omitted, in which case the upper frame 27a may be directly fixed to the existing upper frame 25a. The cover material 56 is, for example, an extruded profile of an aluminum alloy and is formed in a substantially T-shape in cross-section. The cover material 56 has a fin 56a that protrudes outward from a position closer to the outside than the center of the plate portion extending in the depth direction, and a plate piece 56b that protrudes inward from the outside end.

[0039] The upper frame 27a has a pair of rails 58a and 58b that protrude in the depth direction from the inner depth surface of the frame. A resin attachment material 58b1 is attached to the interior side of rail 58b. Reference numeral 59 in Figure 3 is a screw that connects the cover material 56 to the existing upper frame 25a. Reference numeral 60 in Figure 3 is a screw that connects the upper frame 27a to the existing upper frame 25a. In the configuration example shown in Figure 3, the cover material 56 and the upper frame 27a are connected to a metal reinforcing material that is screwed to the existing upper frame 25a with screws 59 and 60, thereby fixing them to the existing upper frame 25a, however, screws 59 and 60 may also be directly fastened to the existing upper frame 25a.

[0040] As shown in Figure 3, the lower frame 27b is fixed with screws 61 to an attachment material 27b1 which is screwed to the inside of the existing lower frame 25b of the second existing frame 25, and is thus supported by the existing lower frame 25b. The lower frame 27b has a cross-sectional shape that is bent in a roughly stepped manner from the outside to the inside. The lower frame 27b, like the upper frame 27a, has a pair of rails 62a, 62b that protrude from the inside surface of the frame in the depth direction. Rail 62a guides the new sash 19 on the outside together with rail 58a. Rail 62b guides the new sash 20 on the inside together with rail 58b.

[0041] As shown in Figure 4, the vertical frame 27c is connected to the existing vertical frame 25c of the second existing frame 25 via the attachment material 63 and the cover material 64, and is thereby supported by the existing mullion 22. In other words, the second new frame 27 has a new vertical member 65 composed of the vertical frame 27c, the attachment material 63, and the cover material 64, and this new vertical member 65 is supported by the existing vertical frame 25c. The new vertical member 65 may also be configured without using one or both of the attachment material 63 and the cover material 64.

[0042] The attachment material 63 is, for example, an extruded profile of an aluminum alloy, and is formed in a substantially crank shape in cross-section. The attachment material 63 has a projection plate portion 63a that is aligned in the Z direction, and a mounting piece 63b which is bent outwards from the outdoor end of the projection plate portion 63a. The attachment material 63 is connected to the existing vertical frame 25c by the mounting piece 63b using screws 66.

[0043] The cover material 64 is, for example, an extruded profile of an aluminum alloy, and is formed in a substantially T-shape in cross-section. The cover material 64 has a facing plate portion 64a along the Z direction, a fin 64b that protrudes outward from the frame from a point closer to the outside than the center of the facing plate portion 64a, and a protruding piece 64c that protrudes inward from the outside end of the facing plate portion 64a. The facing plate portion 64a of the cover material 64 is connected to the attachment material 63 using screws 67 and 68.

[0044] The vertical frame 27c extends in the Z direction, and a hollow section is formed at a position closer to the interior side. The vertical frame 27c has a fin 69 at a position closer to the exterior side of the inner surface of the frame. The fin 69 is absorbed into the frame 19b of the newly installed sash 19 on the exterior side. The vertical frame 27c is fastened together with the cover material 64 to the attachment material 63 using screws 68. The indoor end of the vertical frame 27c is connected to the L-shaped connecting material 70, which is screwed to the attachment material 63, with screws 71. The indoor end of the vertical frame 27c, on the inner surface of the frame, is connected to a resin angle 72 with screws 73.

[0045] As shown in Figure 1, the vertical frame 27d is connected to the existing vertical frame 25d of the second existing frame 25 by screws 74 via attachment material and cover material. The vertical frame 27d may be symmetrical to the vertical frame 27c described above. Furthermore, the attachment material and cover material connected to the vertical frame 27d may be the same or similar to the attachment material 63 and cover material 64 connected to the other vertical frame 27c described above, except that they are symmetrical to each other, so they are given the same reference numerals 63 and 64 in Figure 1 and detailed explanations are omitted.

[0046] As shown in Figures 1 and 3, the newly installed sashes 19 and 20 in this embodiment are sliding windows that are arranged side by side inside the second newly installed frame 27, and are supported so as to be slidable in the X direction. The newly installed sash 19 on the exterior side has a structure in which a facing material 19a is framed on all four sides with a frame 19b. The newly installed sash 20 on the interior side has a structure in which a facing material 20a is framed on all four sides with a frame 20b. The facing materials 19a and 20a are, for example, double-glazed glass in which two panes of glass are arranged side by side inside and outside with a spacer in between. A screen door device 80 supported by frames 27a to 27d is installed on the exterior side of the newly installed sashes 19 and 20.

[0047] Here, we will explain the waterproofing structure between the second existing frame 25 and the second new frame 27.

[0048] As shown in Figure 3, the space between the upper frames 25a and 27a is sealed with waterproofing materials 75 and 76. Waterproofing material 75 seals the space between the fin 56a of the cover material 56 and the outdoor-facing surface 25a1 of the existing upper frame 25a. Waterproofing material 76 seals the space between the indoor-facing surface 56b1 of the plate piece 56b of the cover material 56 and the outdoor-facing surface 27a1 of the upper frame 27a.

[0049] As shown in Figure 3, the area between the lower frames 25b and 27b is sealed with a sealing material 77 attached to the lower outdoor end of the lower frame 27b, with its tip protruding toward the existing lower frame 25b.

[0050] As shown in Figure 4, the space between vertical frames 25d and 27d is sealed with waterproofing materials 78 and 79. Waterproofing material 78 seals the space between the fin 64b of the cover material 64 and the indoor surface 25c1 of the existing vertical frame 25c. Waterproofing material 79 seals the space between the indoor surface 64d of the protruding piece 64c of the cover material 64 and the outdoor surface 27c1 of the vertical frame 27c. As shown in Figure 1, the space between vertical frames 25d and 27d is symmetrical to the waterproofing structure between vertical frames 25d and 27d shown in Figure 4, so the same reference numerals 78 and 79 are used for the waterproofing materials, and a detailed explanation is omitted.

[0051] The renovated joinery 10 has high watertightness because the space between the second newly installed frame 27 and the second existing frame 25 is sealed in this manner. Reference numeral 81 in Figure 4 indicates a waterproof sheet. The waterproof sheet 81 is installed to cover the interior side portion from the existing vertical frame 24d to the vertical frame 26d. The waterproof sheet 81 is further installed to cover the interior side portion from the existing vertical frame 25c to the vertical frame 27c.

[0052] Next, we will explain the more specific configuration and effects of the existing mullions 22 and the outdoor portion of their surrounding area.

[0053] As shown in Figure 4, in the renovated joinery 10, the exterior facing surface 22c of the existing mullion 22 is exposed to the outside. The facing plate portion 22a1 that forms the exterior facing surface 22c of the existing mullion 22 has waterproofing material 82 attached to the left and right ends of its interior facing surface. Each waterproofing material 82 is in close contact with the exterior facing surfaces 24d1 and 25c2 of the existing vertical frames 24d and 25c, respectively. This waterproofing structure between the existing mullion 22 and the existing vertical frames 24d and 25c was installed on the existing joinery before the renovation of the joinery 10 was completed.

[0054] In this embodiment, the remodeled joinery 10 maintains the waterproofing structure between the existing mullions 22 and existing vertical frames 24d and 25c, while attaching the new vertical members 37 and 65 to the visible surfaces 24d1 and 25c1 of the existing vertical frames 24d and 25c via waterproofing materials 52 and 78. As a result, even if the visible dimensions of the existing mullions 22 differ depending on the construction site, the remodeled joinery 10 ensures reliable waterproofing between each new vertical member 37 and 65 and the existing vertical frames 24d and 25c. This is because the new vertical members 37 and 65 can construct a waterproofing structure for the existing vertical frames 24d and 25c by providing waterproofing materials 52 and 78 between their respective visible surfaces 24d1 and 25c1, regardless of their relative positions in the visible direction (X direction) between them. As a result, the remodeled joinery 10 can ensure waterproofing performance on the exterior side of the existing mullions 22 and their surrounding areas.

[0055] As shown in Figures 2 to 4, the remodeled joinery 10 retains the existing upper frames 24a and 25a in addition to the existing mullions 22 and existing vertical frames 24d and 25c. The remodeled joinery 10 has waterproofing materials 48 and 75 attached to the exterior facing surfaces 24a1 and 25a1 of the existing upper frames 24a and 25a, and the newly installed upper frames 26a and 27a (cover materials 28 and 56) are attached to them. Here, the existing vertical frames 24d and 25c and the existing upper frames 24a and 25a are components that were installed on the existing joinery before the remodeling of the joinery 10, and their facing surfaces between the vertical and horizontal elements are arranged to be approximately flush with each other.

[0056] Therefore, in the remodeled joinery 10, the waterproofing material 52 between the newly installed vertical member 37 and the existing vertical frame 24d, and the waterproofing material 48 between the newly installed upper frame 26a (cover material 28) and the existing upper frame 24a are continuous, forming vertical and horizontal waterproofing lines. Furthermore, in the remodeled joinery 10, the waterproofing material 78 between the newly installed vertical member 37 and the existing vertical frame 25c, and the waterproofing material 75 between the newly installed upper frame 27a (cover material 56) and the existing upper frame 25a are continuous, forming vertical and horizontal waterproofing lines. As a result, the waterproofing performance of the exterior portion of the existing mullion 22 and its surrounding area is further improved in the remodeled joinery 10.

[0057] Furthermore, the remodeled joinery 10 employs a configuration that holds the waterproofing material 52,78 to the existing vertical frames 24d,25c via cover materials 36,64. Therefore, the remodeled joinery 10 allows for easy adjustment of the relative connection position in the depth direction between the newly installed vertical frames 24d,25c and the cover materials 36,64 during construction, while still ensuring a waterproof structure with the waterproofing material 52,78. In other words, since the newly installed vertical frames 24d,25c serve as supports for the newly installed sashes 18-20, high precision is required in their mounting position in the depth direction, and this position adjustment is made easy. On the other hand, since the cover materials 36,64 do not require position adjustment relative to the existing vertical frames 24d,25c, reliable installation of the waterproofing material 52,78 is possible. The remodeled joinery 10 may also be configured to directly hold the waterproofing material 52, 78 between the newly installed vertical frames 24d, 25c and the existing vertical frames 24d, 25c, without using cover material 36, 64 (attachment material 63).

[0058] Next, we will explain the more specific configuration and effects of the existing mullions 22 and the indoor portion of their surrounding area.

[0059] As shown in Figure 4, the remodeled joinery 10 includes frames 84 and 85 that conceal the existing mullions 22, existing vertical frames 24d and 25c, and cover materials 36 and 48 from the interior side. The frames 84 and 85 are each resin extruded profiles formed in a roughly L-shaped cross-section, and are made of, for example, polyvinyl chloride (PVC).

[0060] The frame 84 has a mounting portion 84a that runs along the Z direction and a protruding piece 84b that projects in the X direction toward the existing mullion 22 from the indoor end of the mounting portion 84a. The mounting portion 84a is attached to a resin angle 44 attached to the indoor end of the vertical frame 26d using screws 86. The protruding piece 84b is positioned on the indoor side of the indoor surface 22d of the existing mullion 22 in the Y direction and protrudes to a position that overlaps with the existing mullion 22 in the X direction. The tip of the protruding piece 84b is fixed to the base material 88 using screws 87.

[0061] In the configuration example shown in Figure 4, the interior side of the existing mullion 22 is provided with mullion bases 90a and 90b, which have a roughly U-shaped cross-section and are arranged roughly symmetrically to each other, and a mullion cover 91 attached to the interior side mullion base 90b. The mullion bases 90a and 90b and the mullion cover 91 are, for example, extruded profiles of aluminum alloy. The mullion cover 91 is also fixed with screws 92 to the angle portions 24d2 and 25c3 that protrude from the interior side visible surfaces of the existing vertical frames 24d and 25c. The base material 88 is, for example, wood, and is fixed to the mullion cover 91 using screws 93, thereby being supported by the existing mullion 22.

[0062] The frame 85 may have a symmetrical structure to the frame 84 described above. That is, the frame 85 has a mounting portion 85a attached to the resin angle 72 of the vertical frame 27c with screws 86, and a protruding piece 85b that protrudes to the interior side of the existing mullion 22 and is fixed to the base material 88 with screws 87.

[0063] As shown in Figure 4, the protruding pieces 84b and 85b of the left and right frames 84 and 85 protrude inward from each other on the interior side of the existing mullion 22's visible surface 22d. In this case, the protruding pieces 84b and 85b have multiple folding grooves 84c and 85c aligned in the direction of protrusion on their respective back surfaces (exterior side visible surfaces), allowing for easy adjustment of their protruding length. This makes it possible to bring the tips of the protruding pieces 84b and 85b as close together as possible.

[0064] As a result, the remodeled joinery 10 has the existing metal mullions 22, existing vertical frames 24d, 25c, and cover materials 36, 48 etc., concealed from the interior by resin frames 84, 85, resulting in high appearance quality and thermal insulation. Furthermore, by providing folding grooves 84c, 85c in the frames 84, 85, the gap G between them can be easily controlled regardless of the visible dimensions (X-direction dimensions) of the existing mullions 22.

[0065] However, while the tips of the protruding pieces 84b and 85b can be brought close together, it is difficult to completely eliminate the gap G. Therefore, the remodeled joinery 10 of this embodiment may further be configured to include a cover plate 94 as a gap-concealing member that hides the gap G from the interior side. The cover plate 94 is, for example, a thin resin plate, formed of the same material and color as the frames 84 and 85, and extends in the height direction (Y direction) of the frames 84 and 85. The cover plate 94 is fixed to the interior surface of the protruding pieces 84b and 85b with double-sided tape or adhesive, etc., while straddling the gap G. By including the cover plate 94, the remodeled joinery 10 can hide the gap G between the protruding pieces 84b and 85b of the left and right frames 84 and 85, further improving the appearance quality.

[0066] As a gap-concealing member to hide the gap G, a configuration with a sheet-like member 96 as shown in Figure 5 may be used instead of the joint plate 94. The sheet-like member 96 is, for example, a thin resin laminate sheet, and many colors and materials can be prepared. The sheet-like member 96 can cover almost the entire interior surface from the mounting parts 84a, 85a to the protruding pieces 84b, 85b, spanning the gap G. The sheet-like member 96 may also cover only the interior surface of the protruding pieces 84b, 85b. Since the sheet-like member 96 does not create steps like the joint plate 94, the appearance quality of the remodeled joinery 10 can be further improved. However, it is time-consuming to apply the sheet-like member 96 to a large area while preventing wrinkles and lifting. In this respect, the joint plate 94 has the advantage of high construction efficiency because it does not produce wrinkles or lifting like the sheet-like member 96.

[0067] As a gap-concealing member to hide the gap G, a configuration with a trim piece 98 as shown in Figure 6 may be used instead of the cover plate 94 or sheet-like member 96. The trim piece 98 is, for example, a block-shaped decorative material made of wood or resin. In the configuration example shown in Figure 6, the gap G between the left and right protruding pieces 84b and 85b is set to be larger than in the configuration examples shown in Figures 4 and 5. The trim piece 98 is interposed in this large gap G and divides the space between the protruding pieces 84b and 85b. The trim piece 98 is fixed to the mullion cover 91 using, for example, screws similar to the screws 93 in Figure 4, or double-sided tape or adhesive. The trim piece 98 can completely close the gap G by sealing the gap between the tip of the protruding piece 84b and one of the visible surfaces with sealant 100a, and sealing the gap between the tip of the protruding piece 85b and the other visible surface with sealant 100b.

[0068] As a gap-concealing member to hide the gap G, a configuration with a trim piece 102 as shown in Figure 7 may be used instead of the trim piece 98. The trim piece 102 is, for example, an extruded resin profile. The trim piece 102 is interposed in the large gap G between the protruding pieces 84b and 85b, and divides the space between the protruding pieces 84b and 85b. The trim piece 102 is formed, for example, from a rectangular tubular member having a pair of hollow sections, and has plate pieces 102a and 102b protruding outwards from the left and right ends of its outdoor-facing surface. The trim piece 102 is used in place of the mullion cover 91 shown in Figure 4, and the plate pieces 102a and 102b are fixed to the existing vertical frames 24d and 25c and the mullion base 90b with screws 92. Similar to the trim piece 98, the trim piece 102 has the ends of the protruding pieces 84b and 85b sealed with sealing material 100a and 100b between them and their respective surfaces.

[0069] The trim pieces 98 and 102, like the joint boards 94, do not wrinkle or lift like the sheet-like members 96, thus offering the advantage of high installation efficiency. Furthermore, because the trim pieces 98 and 102 are made of wood or resin, they provide high aesthetic quality and insulation.

[0070] Next, one procedure for installing the remodeled fixture 10 will be explained with reference to the flowchart shown in Figure 8.

[0071] First, in step S1 in Figure 8, the existing door frame 22 and existing frames 24 and 25 attached to the building structure 12 are left in place, and the existing sliding door is removed.

[0072] In step S2, the cover materials 28, 36, 56, 64 and attachment materials 26b1, 27b1, 63 are connected to the remaining existing frames 24, 25. Here, the cover materials 28, 36, 56, 64 and attachment materials 26b1, 27b1, 63 are not frame-shaped members. Therefore, each of these materials can be easily connected individually to the existing frames 24, 25 from the interior side at the construction site, resulting in high construction efficiency (see Figures 2 to 4). At this time, the gaps between the cover materials 28, 36, 56, 64 and the existing upper frames 24a, 25a and existing vertical frames 24c, 24d, 25c, 25d are appropriately sealed with waterproofing materials 48, 52, 75, 78.

[0073] In step S3, the new frames 26 and 27 that constitute the new window frame 16 are connected to the cover materials 28, 36, 56, 64 and the attachment materials 26b1, 27b1, 63. As shown in Figures 2 to 4, the interior facing surfaces 28b1, 36d, 56b1, 64d of the cover materials 28, 36, 56, 64 all become the contact surfaces with the new upper frames 26a, 27a and vertical frames 26c, 26d, 27c, 27d, and the waterproofing materials 49, 53, 76, 79 are appropriately held there. For this reason, the new frames 26 and 27 that have been pre-framed in a factory can be easily attached to the existing frames 24 and 25 from the interior side, further improving construction efficiency. Furthermore, when installing the newly installed lower frames 26b and 27b from the interior side of the existing frames 24 and 25, for example, by first inserting the attachment material 26b1 and 27b1 into the frame side using a sliding mechanism, the installation, including the sealing material 50 and 77, can be easily carried out.

[0074] Finally, in step S4, the lengths of the protruding pieces 84b and 85b are adjusted as appropriate using the break grooves 84c and 85c, and the left and right frames 84 and 85 are attached to the vertical frames 26d and 27c. Then, the gap G is concealed with a gap-concealing member, such as a cover plate 94, a sheet-like member 96, or a trim piece 98 or 102. As a result, the interior-facing surface 22d of the existing mullion 22 is concealed by the frames 84 and 85, and the construction of the remodeled joinery 10, which has high appearance quality and thermal insulation, is completed.

[0075] Although the exterior-facing surface 22c of the existing mullions 22 is exposed to the outside, the exterior side has less impact on appearance and insulation compared to the interior side. Therefore, the remodeled joinery 10 is designed so as not to conceal the exterior-facing surface 22c of the existing mullions 22, but rather to press the cover materials 36,64 against the existing vertical frames 24d,25c via the waterproofing materials 52,78. As a result, the remodeled joinery 10 can easily ensure waterproofing performance on the exterior side of the vertical frames 26d,27d, regardless of the visible dimensions of the existing mullions 22.

[0076] Next, a renovation fixture 10A according to the second embodiment will be described.

[0077] As shown in Figure 9, the remodeled joinery 10A according to this embodiment differs from the remodeled joinery 10 according to the first embodiment described above in the connection structure between the existing mullions 22 and existing vertical frames 24d, 25c and the newly installed vertical members 37, 65. Therefore, the following description of the remodeled joinery 10A will mainly focus on the connection structure between the existing mullions 22 and existing vertical frames 24d, 25c and the newly installed vertical members 37, 65. In the remodeled joinery 10A according to the second embodiment, elements that have the same or similar functions and effects as the remodeled joinery 10 according to the first embodiment are given the same reference numerals, and detailed explanations are omitted.

[0078] First, we will explain the structure, function, and effect of the existing mullion 22 and the outdoor portion of its surrounding area in the remodeled door frame 10A.

[0079] As shown in Figure 9, in the remodeled joinery 10A, the vertical frame 26d is connected to the existing vertical frame 24d of the first existing frame 24 via the attachment material 104, and is thereby supported by the existing mullion 22. In other words, the new vertical member 37 of the remodeled joinery 10A is composed of the vertical frame 26d and the attachment material 104.

[0080] In this embodiment, the remodeled joinery 10A consists of a sliding window in which the first newly installed frame 26 slidably supports the newly installed sashes 19 and 20, and a fixed window in which the second newly installed frame 27 supports the newly installed sash 18. For this reason, in the remodeled joinery 10A, a fin 106 is provided on the inner surface of the vertical frame 26d that is absorbed by the frame 20b of the newly installed sash 20 on the interior side. In addition, protruding pieces 108a and 108b, which serve as vertical frames for holding the facing material 18a of the newly installed sash 18, are provided side by side in the depth direction on the inner surface of the vertical frame 27c. A resin attachment 43b1 is attached to the protruding piece 108b on the interior side.

[0081] The attachment material 104 is, for example, an extruded profile of an aluminum alloy, and is formed in a substantially crank shape in cross-section. The attachment material 104 has a projection plate portion 104a that is aligned in the Z direction, and a mounting piece 104b which is bent outwards from the outdoor end of the projection plate portion 104a and further bent outwards. The attachment material 104 is connected to the existing vertical frame 24d by the mounting piece 104b using screws 110. The vertical frame 26d of the remodeled joinery 10A is connected to the outer projection surface of the projection plate portion 104a using screws 112.

[0082] In the remodeled joinery 10A, the vertical frame 27c is connected to the existing vertical frame 25c of the second existing frame 25 via an attachment material 114, and is thereby supported by the existing mullion 22. In other words, the new vertical member 65 of the remodeled joinery 10A is composed of the vertical frame 27c and the attachment material 114.

[0083] The attachment material 114 is, for example, an extruded aluminum alloy profile, and is formed in a substantially crank shape in cross-section. The attachment material 114 has a projection plate portion 114a that is aligned in the Z direction, and a mounting piece 114b which is bent outwards from the outdoor end of the projection plate portion 114a and further bent outwards. The attachment material 114 is connected to the existing vertical frame 25c by the mounting piece 114b using screws 116. The vertical frame 27c of the remodeled joinery 10A is fixed to the outer projection surface of the projection plate portion 114a using screws 117.

[0084] In the remodeled joinery 10A, the gaps between the vertical frames 26d, 27c and the existing vertical frames 24d, 25c are sealed with waterproofing materials 118 and 119. Waterproofing material 118 is a sealant attached to a pocket portion 26d3 formed on the outer-facing side of the outer-facing surface 26d2 of the vertical frame 26d. Waterproofing material 118 seals the gap between the outer-facing surface 24d1 of the existing vertical frame 24d and the outer-facing surface 26d2 of the vertical frame 26d. Waterproofing material 119 is a sealant attached to a pocket portion 27c3 formed on the outer-facing side of the outer-facing surface 27c2 of the vertical frame 27c. Waterproofing material 119 seals the gap between the outer-facing surface 25c2 of the existing vertical frame 25c and the outer-facing surface 27c2 of the vertical frame 27c. The waterproofing materials 118 and 119 may be installed to prevent water from seeping between the exterior facing surfaces 24d1 and 25c2 and the exterior or interior facing surfaces of the vertical frames 26d and 27c.

[0085] In the remodeled joinery 10A, the connection structure and waterproofing structure between the upper frames 26a, 27a and the existing upper frames 24a, 25a are not particularly limited, but may be the same as, for example, the connection structure and waterproofing structure between the vertical frames 26d, 27c and the existing vertical frames 24d, 25c shown in Figure 9. Similarly, in the remodeled joinery 10A, the connection structure and waterproofing structure between the lower frames 26b, 27b and the existing lower frames 24b, 25b are not particularly limited, but may be the same as, for example, the connection structure and waterproofing structure between the lower frames 26b, 27b and the existing lower frames 24b, 25b shown in Figures 2 and 3 above.

[0086] In this way, the remodeled joinery 10A has a watertight seal between the first newly installed frame 26 and the first existing frame 24, resulting in high watertightness.

[0087] Next, the structure and effects of the existing mullion 22 and the interior portion of its surrounding area in the remodeled joinery 10A will be explained.

[0088] As shown in Figure 9, the remodeled joinery 10A of this embodiment includes frames 120 and 121 that cover the existing mullions 22, existing vertical frames 24d and 25c, and attachment materials 104 and 114 from the interior side. The frames 120 and 121 are resin extruded profiles formed in a substantially L-shaped cross-section, and are made of, for example, polyvinyl chloride (PVC).

[0089] The frame 120 has a mounting portion 120a that runs along the Z direction and a protruding piece 120b that projects in the X direction toward the existing mullion 22 from the indoor end of the mounting portion 120a. The mounting portion 120a is attached to the vertical frame 26d and the resin angle 44. The protruding piece 120b has a hollow portion and protrudes toward the existing mullion 22 in the X direction. The frame 121 may have a left-right symmetrical structure to the frame 120 described above. That is, the frame 121 has a mounting portion 121a that is attached to the vertical frame 27c and a protruding piece 121b that projects toward the existing mullion 22.

[0090] The protruding pieces 120b and 121b of the picture frames 120 and 121 each have pocket portions 120c and 121c at their ends. Tightening materials 122 and 123 are fitted into the pocket portions 120c and 121c, respectively.

[0091] The protruding pieces 120b and 121b of the frames 120 and 121 have a larger gap G between them than the configurations shown in Figures 4 and 5, similar to the configuration examples shown in Figures 6 and 7. A trim piece 124 is placed in this gap G as a gap-concealing member. The trim piece 124 is, for example, an extruded resin profile. The trim piece 124 can have a substantially similar structure to the trim piece 102 shown in Figure 7, except that the depth and face dimensions are different. The fins 124a and 124b that protrude outward from the left and right ends of the exterior face surface of the trim piece 124 are fixed to the mullion base 90b using screws 92. Here, since the existing vertical frames 24c and 25c of the remodeled joinery 10A do not have angle sections 24d2 and 25c3 on the interior face surface, the fins 124a and 124b are directly fixed to the mullion base 90b.

[0092] The trim piece 124 can completely seal the gap G by sealing the gap between the tip of the protruding piece 120b and one of the facing surfaces with a sealing material 122, and sealing the gap between the tip of the protruding piece 121b and the other facing surface with a sealing material 123. The remodeled joinery 10A may use a trim piece 98, which is a decorative material as shown in Figure 6, instead of the trim piece 124.

[0093] Thus, in the remodeled joinery 10A of this embodiment, the new vertical members 37 and 65 are attached to the visible surfaces 24d1 and 25c2 of the existing vertical frames 24d and 25c, which maintain a waterproof state relative to the existing mullions 22, via waterproofing materials 118 and 119. As a result, even in the remodeled joinery 10A, waterproofing is reliably ensured between each new vertical member 37 and 65 and the existing vertical frames 24d and 25c, even if the visible dimensions of the existing mullions 22 differ depending on the construction site. Consequently, the remodeled joinery 10A can ensure waterproofing performance on the exterior side of the existing mullions 22 and their surrounding areas. Furthermore, in the remodeled joinery 10A, by configuring the waterproofing materials 118 and 119 to abut against the visible surfaces 24d1 and 25c2 of the existing vertical frames 24d and 25c, vertical and horizontal waterproofing lines can be easily formed between the existing upper frames 24a and 25a and the upper frames 26a and 27a.

[0094] Furthermore, in the remodeled joinery 10A of this embodiment, the waterproofing material 118, 119 is held to the existing vertical frames 24d, 25c via attachment materials 104, 114. Therefore, the connection position of the vertical frames 24d, 25c of the remodeled joinery 10A in the direction of the attachment materials 104, 114 can be easily adjusted during construction, improving construction efficiency.

[0095] As a gap-concealing member to hide the gap G in the remodeled joinery 10A, a configuration with a trim piece 126 as shown in Figure 10 may be used instead of the trim piece 124. The trim piece 126 is the same as or similar to the trim piece 124 in terms of material and shape, but the connection structure to the existing window frame 14 is different. That is, in the existing window frame 14 of the example configuration shown in Figure 11, the interior side portion 22b and the mullion base 90a of the existing mullion 22 are omitted, and the mullion base 90b is directly connected to the mullion body 22a of the existing mullion 22 with screws 23. The trim piece 126 is fixed to the mullion base 90b with screws 92. Note that the existing mullion 22 is not shown in Figure 10, and the same is true for Figures 11 and 12.

[0096] As a gap-concealing member to hide the gap G in the remodeled joinery 10A, a configuration with a trim piece 128 as shown in Figure 11 may be used instead of the trim piece 124. The material of the trim piece 128 is the same as or similar to that of the trim piece 124, but the visible dimensions are larger than those of the trim piece 124. That is, the existing window frame 14 shown in Figure 9 has a visible dimension of 40 mm for the mullion base 90b, while the existing window frame 14 shown in Figure 11 has a visible dimension of 70 mm. For this reason, the trim piece 128 has a larger visible dimension than the trim piece 124.

[0097] As a gap-concealing member to hide the gap G in the remodeled joinery 10A, a configuration with a trim piece 130 as shown in Figure 12 may be used instead of the trim piece 124. The trim piece 130 is the same as or similar to the trim piece 124 in terms of material and shape, but the connection structure to the existing window frame 14 is different. That is, the existing window frame 14 in the configuration example shown in Figure 12 has angle sections 24d2, 25c3 on the interior side of the existing vertical frames 24d, 25c, similar to the configuration example shown in Figure 4. The trim piece 130 is directly fixed to these angle sections 24d2, 25c3 with screws 92.

[0098] As described above, the depth and visible dimensions of the existing mullions 22 usually vary depending on the construction site. Figure 9 shows an example configuration in which the depth of the existing mullion 22 is 70 mm, the visible dimensions of the existing mullion 22, and the visible dimensions of the mullion base 90b are 40 mm. Figure 10 shows an example configuration in which the depth of the existing mullion 22 is 60 mm, and the visible dimensions of the existing mullion 22 are 40 mm. Figure 11 shows an example configuration in which the depth of the existing mullion 22 is 60 mm, and the visible dimensions of the existing mullion 22 are 70 mm. Figure 12 shows an example configuration in which the depth of the existing mullion 22 is 70 mm, the visible dimensions of the existing mullion 22, and the distance between angle sections 24d2 and 25c3 is 50 mm. On the other hand, Figures 4 to 7 illustrate a configuration in which the depth dimension of the existing mullion 22 is 70 mm and the visible dimension of the existing mullion 22 is 40 mm. However, it goes without saying that the remodeled joinery 10 according to the first embodiment described above can also be flexibly adapted to existing mullions 22 of various dimensions, just like the remodeled joinery 10A according to the second embodiment.

[0099] Next, one procedure for installing the remodeled joinery 10A will be explained with reference to the flowchart shown in Figure 13.

[0100] Here, we will explain the procedure for attaching vertical frames 26d and 27c to the existing mullions 22 and vertical frames 24d and 25c shown in Figures 9 to 12, and will omit explanations of the upper frames 26a and 27a, the lower frames 26b and 27b, and the vertical frames 26c and 27d.

[0101] Step S11 in Figure 13 is the same or similar process as Step S1 in Figure 8, so a detailed explanation is omitted. In Step S12, attachment materials 104 and 114 are connected to the existing frames 24 and 25 that constitute the existing window frame 14. Similar to Step S2 in Figure 8, since the attachment materials 104 and 114 are not frame-shaped members, they can be easily connected individually to the existing frames 24 and 25 from the interior side at the construction site, resulting in high construction efficiency (see Figure 9). In addition, in Step S12 of this construction method, a process of connecting one of the trim materials 124, 126, or 128 to the existing mullion 22 is also performed.

[0102] In step S13, the new frames 26 and 27 that constitute the new window frame 16 are connected to the attachment materials 104 and 114. At this time, as shown in Figure 9, the water-sealing materials 118 and 119 attached to the outer surface 26d2 and 27d2 of the vertical frames 26d and 27d come into contact with the outdoor surface 24d1 and 25c2 of the attachment materials 104 and 114. As a result, the gap between the vertical frames 26d and 27d and the existing vertical frames 24d and 25c is sealed.

[0103] Finally, in step S14, the left and right frames 120 and 121 are attached to the vertical frames 26d and 27c. At this time, the gap G is hidden by one of the gap-concealing members 124, 126, or 128. As a result, the interior-facing surface 22d of the existing mullion 22 is hidden by the frames 120, 121, etc., and the construction of the remodeled joinery 10A, which has high appearance quality and thermal insulation, is completed. In this way, the remodeled joinery 10 and 10A according to each embodiment described above can be installed with the new frames 26 and 27 without cutting or removing the existing mullion 22, thus increasing the efficiency of the construction work and reducing construction costs. In addition, the remodeled joinery 10 and 10A can ensure waterproofing performance between the existing window frame 14 and the new window frame 16.

[0104] A remodeling joinery according to a first aspect of the present invention is a remodeling joinery in which a new window frame is installed inside an existing window frame, wherein the existing window frame comprises an existing mullion, a first existing vertical frame provided on one side of the existing mullion, and a second existing vertical frame provided on the other side of the existing mullion, and the new window frame comprises a first vertical frame supported by the first existing vertical frame, a second vertical frame supported by the second existing vertical frame, a first frame supported on the interior side of the first vertical frame, and a second frame supported on the interior side of the second vertical frame, wherein the first frame and the second frame each have protruding pieces that protrude so as to face each other on the interior side of the interior surface of the existing mullion. With this configuration, the existing mullion is not cut or removed, and the first and second existing vertical frames are left in place when installing the new window frame, thus increasing the efficiency of the construction work and reducing construction costs. Furthermore, since the interior side of the existing mullions and vertical frames is concealed by the left and right frames, the appearance quality and insulation performance of the remodeled joinery are also improved.

[0105] A gap is formed between the protruding pieces of the first and second frames, and the configuration may also include a gap-concealing member to hide the gap. In other words, it is difficult to align the protruding pieces of the left and right frames without any gaps. Therefore, by concealing this gap with a gap-concealing member, the appearance quality and thermal insulation of the remodeled joinery can be further improved.

[0106] Each of the aforementioned protruding pieces may be made of resin and may have a break-off groove that allows for adjustment of its protruding length. This would allow for easy adjustment of the protruding length of each frame's protruding piece at the construction site, according to the visible dimensions of the existing mullions.

[0107] The aforementioned protruding pieces are positioned close to each other and facing one another, and the gap-concealing member may be configured to have a cover plate fixed to the indoor surface of each protruding piece, straddling the gap. In this configuration, the gap between each protruding piece can be easily sealed.

[0108] The aforementioned protruding pieces are positioned close to each other and facing one another, and the gap-concealing member may be configured to have a sheet-like member attached to the indoor surface of each protruding piece, straddling the gap. In this configuration, the gaps between the protruding pieces can be sealed without any steps, further improving the appearance quality.

[0109] Furthermore, the structure may include a base material that is supported against the indoor surface of the existing mullion and supports the outdoor surface of each of the protruding pieces. In this case, the space between each protruding piece is stably supported.

[0110] The gap-concealing member is supported against the indoor-facing surface of the existing mullion and has a trim piece that is placed in the gap. Each of the protruding pieces is positioned opposite the visible surface of the trim piece, and the gap between them and the visible surface may be sealed with a sealing material. This makes it easy to seal the gaps between each protruding piece and also facilitates the sealing work with the sealing material.

[0111] The gap-concealing member is supported against the interior-facing surface of the existing mullion and has a trim piece that is placed in the gap. Each of the protruding pieces is positioned opposite the visible surface of the trim piece, and the gap between them may be sealed with a sealing material. In this configuration, the gaps between each protruding piece can be easily sealed, and the sealing material can be securely pressed against the visible surface of the trim piece.

[0112] The trim material may have a configuration comprising a mullion base connected to the indoor-facing surface of the existing mullion, and a mullion cover attached to the indoor side of the base material. This allows the trim material to be securely fixed to the existing mullion.

[0113] The trim material may also have a decorative material placed in the gap. This would further improve the appearance quality.

[0114] A method for installing a remodeled window frame according to a second aspect of the present invention is a method for installing a new window frame on an existing window frame, comprising the steps of: supporting a first vertical frame on a first existing vertical frame provided on one side of an existing mullion; supporting a second vertical frame on a second existing vertical frame provided on the other side of the existing mullion; connecting a first frame to the interior side of the first vertical frame and positioning a protruding piece provided on the first frame on the interior side of the existing mullion; connecting a second frame to the interior side of the second vertical frame and positioning a protruding piece provided on the second frame on the interior side of the existing mullion, and positioning the protruding pieces of the first frame and the second frame so as to face each other. With this method, the existing mullion is not cut or removed, and the first and second existing vertical frames are left in place when installing the new window frame, thus increasing the efficiency of the installation work and reducing installation costs. Furthermore, since the interior side of the existing mullions and vertical frames is concealed by the left and right frames, the appearance quality and insulation performance of the remodeled joinery are also improved.

[0115] The step of arranging each of the protruding pieces so that they face each other leaves a gap between them, and may further include a step of concealing the gap with a gap-concealing member. This makes it easy to close the gap between the protruding pieces of the left and right frames, further improving the appearance quality and heat insulation.

[0116] It should be noted that the present invention is not limited to the embodiments described above, and can be freely modified without departing from the spirit of the invention. [Explanation of Symbols]

[0117] 10,10A Renovated joinery, 12 Structural frame, 14 Existing window frame, 16 New window frame, 18~20 New shoji screen, 22 Existing mullion, 24 First existing frame, 24a,25a Existing upper frame, 24c,24d,25c,25d Existing vertical frame, 25 Second existing frame, 26 First new frame, 26a,27a Upper frame, 26b1,27b1,58b1,63,104,114 Attachment material, 26c,26d,27c,27d Vertical frame, 27 Second new frame, 28,36,56,64 Cover material, 37 New vertical member, 48,49,52,53,75,76,78,79,82,118,119 Water-stopping material, 50, 77, 122, 123; Tightening material, 65; New vertical material, 84, 85, 120, 121; Picture frame, 94; Gap board, 96; Sheet-like material, 98, 102, 124, 126, 128, 130; Trim material

Claims

1. This is a remodeled window fixture in which a new window frame is installed inside the existing window frame. The aforementioned existing window frame is Existing mullions and, The first existing vertical frame provided on one side of the existing mullion, A second existing vertical frame is provided on the other side of the aforementioned existing mullion, It has, The aforementioned newly installed window frame is The first vertical frame supported by the first existing vertical frame, The second vertical frame supported by the second existing vertical frame, The first picture frame is supported on the interior side of the first vertical frame, The second picture frame is supported on the interior side of the second vertical frame, It has, The first frame and the second frame each have protruding pieces that project inward from the interior surface of the existing mullion, facing each other. Renovation fixtures characterized by these features.

2. A remodeling fixture according to claim 1, A gap is formed between the protruding pieces of the first frame and the second frame. Furthermore, it includes a gap-concealing member to hide the gap. Renovation fixtures characterized by these features.

3. A remodeling fixture according to claim 2, Each of the aforementioned protruding pieces is made of resin and has a break-off groove that allows for adjustment of its protruding length. Renovation fixtures characterized by these features.

4. A remodeling fixture according to claim 2 or 3, Each of the aforementioned protruding pieces is in close proximity to and facing each other. The gap-concealing member has a cover plate fixed to the indoor-side surface of each protruding piece while straddling the gap. Renovation fixtures characterized by these features.

5. A remodeling fixture according to claim 2 or 3, Each of the aforementioned protruding pieces is in close proximity to and facing each other. The gap-concealing member has a sheet-like member that is attached to the indoor-side surface of each protruding piece while straddling the gap. Renovation fixtures characterized by these features.

6. A remodeling fixture according to claim 4 or 5, Furthermore, it includes a base material that is supported against the indoor surface of the existing mullion and supports the outdoor surface of each of the protruding pieces. Renovation fixtures characterized by these features.

7. A remodeling fixture according to claim 2 or 3, The gap-concealing member is supported against the interior-facing surface of the existing mullion and has a trim piece that is placed in the gap. Each of the aforementioned protruding pieces is positioned opposite the visible surface of the trim material, and the space between them and the visible surface is sealed with a sealing material. Renovation fixtures characterized by these features.

8. A remodeling fixture according to claim 2, The gap-concealing member is supported against the interior-facing surface of the existing mullion and has a trim piece that is placed in the gap. Each of the aforementioned protruding pieces is positioned opposite the visible surface of the trim material, and the space between them and the visible surface is sealed with a sealing material. Renovation fixtures characterized by these features.

9. A remodeling fixture according to claim 7 or 8, The aforementioned trim material is A mullion base connected to the indoor-facing surface of the existing mullion, The mullion cover attached to the interior side of the aforementioned mullion base, has Renovation fixtures characterized by these features.

10. A remodeling fixture according to claim 7, The trim material has a decorative material placed in the gap. Renovation fixtures characterized by these features.

11. A method for installing a new window frame on an existing window frame as a renovation fixture, A step of supporting the first vertical frame on the first existing vertical frame provided on one side of the existing mullion, A step of supporting the second vertical frame on the second existing vertical frame provided on the other side of the aforementioned existing mullion, The steps include connecting the first frame to the interior side of the first vertical frame, and positioning the protruding piece provided on the first frame to be on the interior side of the existing mullion's interior facing surface, The steps include: connecting the second frame to the interior side of the second vertical frame, positioning the protruding piece provided on the second frame on the interior side of the existing mullion's interior facing surface, and positioning the protruding pieces of the first frame and the second frame so that they face each other; A method for constructing remodeled joinery, characterized by having the following features.

12. A method for installing a remodeled door or window according to claim 11, The step of arranging each of the protruding pieces so that they face each other is to leave a gap between each of the protruding pieces. Furthermore, the process includes concealing the gap with a gap-concealing member. A method for constructing remodeled joinery characterized by the following features.

Images