Refitted furniture

Abstract

To provide a renovation fitting capable of improving the water-stopping performance of a new upper frame.SOLUTION: A renovation fitting 1 includes: a new frame 2 which is attached to an existing frame 6 provided in an opening of building 100, and which is constituted of four peripheries assembled together; and an attachment frame 3 which is arranged in between the new frame 2 and the existing frame 6, and which is constituted of four peripheries assembled together. The attachment frame 3 has an attachment upper frame 31 arranged in an upper part and extending in a lateral direction. The attachment upper frame 31 is formed open upwards and has a horizontal gutter structure 310 extending laterally.SELECTED DRAWING: Figure 18

Description

Technical Field

[0001] The present disclosure relates to a refitted fitting.

Background Art

[0002] Conventionally, as a method of refitting an opening of a building by renovation or the like, a covering method of installing a new fitting in the opening has been adopted. In the refitted fitting refitted by this covering method, a new frame is attached to the inner peripheral side of an existing frame attached to the opening of the building (see, for example, Patent Document 1).

[0003] In the refitted fitting described in Patent Document 1, a drainage structure is provided in the opening of the building. The drainage structure described in Patent Document 1 is a structure in which a waterproof sheet is provided across the outer wall of the building and the newly installed upper frame.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the drainage structure described in Patent Document 1, a waterproof sheet is provided across the outer wall of the building and the newly installed upper frame. In a refitted fitting, it is required to improve the drainage performance.

[0006] An object of the present disclosure is to provide a refitted fitting capable of improving the drainage performance.

Means for Solving the Problems

[0007] The present disclosure relates to a retrofit fitting to be attached to an existing frame provided in an opening of a building, the retrofit fitting including a newly installed frame configured by assembling four sides, and an attachment frame configured by assembling four sides and disposed between the newly installed frame and the existing frame, the attachment frame having an attachment upper frame disposed at an upper portion and extending in a lateral direction, the attachment upper frame having a horizontal gutter structure portion formed to be open upward and extending in the lateral direction.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

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Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

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Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Figure 22

Figure 23

Figure 24

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments 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 reforming, which forms new members while leaving the existing frame 6 fixed to the building 100 attached to the building 100.

[0010] In this specification, the "viewing direction" means the surface direction of the facing material of the shoji 10 in the refitted fitting 1 housed in the opening formed in the wall of the building 100, and the "depth direction" means the thickness direction (i.e., the depth direction) of the facing material. The "depth direction" is also the indoor-outdoor direction. In the drawings, the outdoor side of the refitted fitting 1 is defined as the outdoor side X1, and the indoor side of the refitted fitting 1 is defined as the indoor side X2. The lateral direction of the refitted fitting 1 is referred to as the "left-right direction".

[0011] As shown in FIGS. 1 to 7, the refitted fitting 1 according to the present embodiment is a sliding window type refitted sash housed in the opening of the building 100. The refitted fitting 1 is attached to the existing frame 6 provided in the opening of the building 100.

[0012] As shown in FIGS. 1 to 7, the refitted fitting 1 includes a new frame 2, an attachment frame 3 attached to the inner side of the existing frame 6 in a state of being attached to the outer periphery of the new frame 2, indoor decorative members 41, 42, 43 (cover materials), outdoor decorative covers 51, 52, 53 (cover materials), and shojis 10, 10 slidably housed in the new frame 2. The existing frame 6 is provided in the opening of the building 100. The new frame 2 is attached to the inner side of the existing frame 6 with the attachment frame 3 attached to the outer periphery. The attachment frame 3 is disposed between the existing frame 6 and the new frame 2.

[0013] First, the configuration of the existing frame 6 will be described. As shown in FIGS. 2 and 3, the existing frame 6 is provided inside the opening of the building 100 and is formed in a rectangular frame shape. The existing frame 6 includes an existing upper frame 61, an existing lower frame 62, and left and right existing vertical frames 63.

[0014] As shown in FIG. 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 standing upright downward. The portion of the existing upper frame 61 on the indoor side X2 is fixed to the building 100 (the building structure).

[0015] 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 existing shoji that stand upright upward. The portion on the indoor side X2 of the existing lower frame 62 is fixed to the building 100 (the building structure).

[0016] As shown in FIG. 3, the existing vertical frames 63 are respectively attached to the left and right vertical portions on the outdoor side X1 of the opening of the building 100. The portion on the indoor side X2 of the existing vertical frames 63 is fixed to the building 100 (the building structure).

[0017] As shown in FIGS. 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 configured by assembling the four sides and is attached to the inner peripheral side of the existing frame 6 via the attachment frame 3.

[0018] The new frame 2 includes a new upper frame 21, a new lower frame 22, and left and right new vertical frames 23. The new frame 2 is screwed at the portions where the new upper frame 21, the new lower frame 22, and the left and right new vertical frames 23 combine when the four sides are assembled. The attachment frame 3 includes an attachment upper frame 31, an attachment lower frame 32, and left and right attachment vertical frames 33.

[0019] As shown in FIG. 10, when the new frame 2 with the attachment frame 3 attached to the outer periphery is attached to the existing frame 6, the new upper frame 21 is attached to the inner peripheral side of the existing upper frame 61 with the attachment upper frame 31 sandwiched therebetween. The new upper frame 21 has guide rails 211, 212 on the upper side of the upper portions of the shoji 10, 10 that stand upright downward.

[0020] As shown in FIG. 10, when the new frame 2 with the attachment frame 3 attached to the outer periphery is attached to the existing frame 6, the new lower frame 22 is attached to the inner peripheral side of the existing lower frame 62 with the attachment lower frame 32 sandwiched therebetween. The new lower frame 22 has guide rails 221, 222 on the lower side of the lower portions of the shoji 10, 10 that stand upright upward.

[0021] The newly installed vertical frame 23 is attached to the inner circumferential side of the existing vertical frame 63 with the attachment vertical frame 33 sandwiched therebetween, as shown in Fig. 11, in a state where the newly installed frame 2 with the attachment frame 3 attached to its outer periphery is attached to the existing frame 6.

[0022] The newly installed upper frame 21, the newly installed lower frame 22, and the newly installed vertical frame 23 are formed of, for example, a metal material or a resin material. As shown in Figs. 10 and 11, resin angle members 213, 223, and 233 are provided on the indoor side X2 of the newly installed upper frame 21, the newly installed lower frame 22, and the newly installed vertical frame 23, respectively. The resin angle members 213, 223, and 233 are arranged with an interval between them and the frame member 101, respectively.

[0023] The above newly installed frame 2 (the newly installed upper frame 21, the newly installed lower frame 22, and the left and right newly installed vertical frames 23) is attached to the inner circumferential side of the existing frame 6 (the existing upper frame 61, the existing lower frame 62, and the left and right existing vertical frames 63) in a state where the attachment frame 3 (the attachment upper frame 31, the attachment lower frame 32, and the left and right attachment vertical frames 33) is provided by assembling the four sides on the outer periphery.

[0024] The attachment frame 3 is attached by assembling the four sides on the outer periphery of the newly installed frame 2. The attachment frame 3 is attached to the inner circumferential side of the existing frame 6 in a state where it is attached by assembling the four sides on the outer periphery of the newly installed frame 2.

[0025] As shown in Figs. 8 and 9, the attachment frame 3 is configured by arranging the attachment upper frame 31, the attachment lower frame 32, and a pair of attachment vertical frames 33 on the four sides and assembling them into a rectangle. The attachment upper frame 31, the attachment lower frame 32, and the left and right attachment vertical frames 33 are each formed of, for example, an aluminum material.

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

[0027] As shown in Fig. 8, the attachment frame 3 is configured by a so-called vertical-lapping structure in which the longitudinal ends of the attachment vertical frames 33 are arranged 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 peripheral side of the existing frame 6, it is disposed between the new frame 2 and the existing frame 6. As shown in Fig. 12, the attachment upper frame 31 is attached in a state of being hooked on the new upper frame 21. As shown in Fig. 13, the attachment lower frame 32 is attached in a state of being hooked on the new lower frame 22. As shown in Figs. 14 and 15, the attachment vertical frame 33 is attached in a state of being hooked on the new vertical frame 23. Note that the attachment frame 3 (attachment upper frame 31, attachment lower frame 32, attachment vertical frame 33) may be fastened by screw fixing or the like without being hooked on the new frame 2 (new upper frame 21, new lower frame 22, new vertical frame 23).

[0029] As shown in Figs. 16 and 17, in the attachment frame 3, when the attachment upper frame 31, the attachment lower frame 32, and the pair of attachment vertical frames 33 are attached to the outer periphery of the new frame 2, in the assembling portions of any two of the attachment upper frame 31, the attachment lower frame 32, and the pair of attachment vertical frames 33, they are fixed to each other by screws 34 (fastening members). Specifically, the upper and lower ends of each of the pair of attachment vertical frames 33 are fixed to both longitudinal ends of the attachment upper frame 31 by screws 34, and the upper and lower ends of each of the pair of attachment vertical frames 33 are fixed to both longitudinal ends of the attachment lower frame 32 by screws 34.

[0030] As shown in Fig. 10, the attachment upper frame 31 includes an outdoor side indoor-outdoor direction extending portion 311, an attachment upper frame hollow portion 312 (hollow portion) with an outer peripheral side plane 312a formed thereon, an outdoor side up-down direction extending plate portion 313 (search direction extending plate portion), an indoor side horizontal extending plate 314 (extending plate), an indoor side lower extending portion 315, an indoor side lower end horizontal protruding piece 316, and an L-shaped hook piece 317.

[0031] The outdoor side indoor-outdoor direction extending portion 311 and the attachment upper frame hollow portion 312 are arranged side by side in the indoor-outdoor direction. The outdoor side indoor-outdoor direction extending portion 311 is arranged on the outdoor side X1, and the attachment upper frame hollow portion 312 is arranged on the indoor side X2. The outdoor side indoor-outdoor direction extending portion 311 is formed at a position lower than the upper surface of the attachment upper frame hollow portion 312.

[0032] The outdoor side up-down direction extending plate portion 313 is formed in a plate shape extending upward from the outdoor side X1 end of the outdoor side indoor-outdoor direction extending portion 311. The outdoor side up-down direction extending plate portion 313 is arranged on the outdoor side X1 and extends in the up-down direction (search direction). A pair of engaging protrusions 313a are formed on the lower side of the outdoor side X1 surface of the outdoor side up-down direction extending plate portion 313, which are arranged vertically apart. A pair of engaging protrusions 55 of the outdoor side decorative cover 51 are engaged and attached to the pair of engaging protrusions 313a.

[0033] As shown in Fig. 18, a horizontal gutter structure portion 310 is formed at the upper part of the attachment upper frame 31. The horizontal gutter structure portion 310 is formed by the upper surface of the outdoor side indoor-outdoor direction extending portion 311, the outdoor side X1 surface of the attachment upper frame hollow portion 312, and the indoor side X2 surface of the lower side of the outdoor side up-down direction extending plate portion 313. The horizontal gutter structure portion 310 is formed at the upper part of the attachment upper frame 31, is formed to be open upward, and extends in the left-right direction (horizontal direction). Both longitudinal ends of the horizontal gutter structure portion 310 are formed to be open to the outer side in the left-right direction. The water that has entered the horizontal gutter structure portion 310 flows to both longitudinal ends of the attachment upper frame 31, and through the notch portion 337 of the attachment vertical frame 33 via the longitudinal ends that are open to the outer side in the left-right direction, and flows into the interior of the attachment vertical frame 33.

[0034] As shown in FIG. 10, the attachment upper frame hollow portion 312 is formed in an elongated rectangular hollow shape extending in the indoor-outdoor direction. On the upper surface of the attachment upper frame hollow portion 312, an outer peripheral side plane 312a is formed. The outer peripheral side plane 312a is formed on the outer peripheral side of the attachment frame 3 in the attachment upper frame 31. The outer peripheral side plane 312a faces the existing upper frame 61 and is formed in a planar shape extending in the indoor-outdoor direction and the horizontal direction. The outer peripheral side plane 312a is formed over the entire longitudinal direction of the attachment upper frame 31 and faces upward.

[0035] The outer peripheral side plane 312a is formed in a planar shape so as not to contact the inner peripheral side of the existing frame 6 when the attachment frame 3 with the new frame 2 attached is attached to the inner peripheral side of the existing frame 6. In the present embodiment, as shown in FIG. 12, on the outer peripheral side of the attachment upper frame 31, from the indoor side X2 to the outdoor side X1, from the space above the outer peripheral side plane 312a to the space in front of the outdoor-side vertically extending plate portion 313, and from the space in front of the outdoor-side vertically extending plate portion 313 to the space facing upward, an L-shaped space S1 is formed as shown by a virtual line (two-dot chain line). The L-shaped space S1 is formed along the indoor-side X2 surface and the outer peripheral side plane 312a of the outdoor-side vertically extending plate portion 313 on the outer peripheral side of the attachment upper frame 31.

[0036] Thus, since the existing upper frame 61 can be accommodated in the L-shaped space S1, the attachment frame 3 with the new frame 2 attached can be easily attached to the existing frame 6. In particular, in the present embodiment, as shown in FIG. 10, since the outer peripheral side plane 312a is formed along the indoor-outdoor direction of the attachment upper frame 31, the attachment upper frame 31 with the new upper frame 21 attached can be attached to the existing upper frame 61 so as not to interfere during attachment, corresponding to existing frames 6 of various shapes.

[0037] As shown in Fig. 10, the indoor-side horizontal extension plate 314 extends horizontally in the indoor-side X2 direction from the end of the indoor side of the upper frame hollow part 312 of the attachment at the upper end. The indoor-side plane 314a on the outer peripheral side of the attachment frame 3 in the indoor-side horizontal extension plate 314 is formed on the same plane as the outer peripheral-side plane 312a of the attachment upper frame hollow part 312. The indoor-side plane 314a is formed in a planar shape over the entire longitudinal direction of the attachment upper frame 31.

[0038] When the attachment frame 3 is fixed to the building 100 (the body), the screw 36 is passed through and arranged in the indoor-side horizontal extension plate 314. Thereby, the indoor-side horizontal extension plate 314 is fixed to the building 100 (the body) by the screw 36. When a gap is formed between the indoor-side plane 314a of the indoor-side horizontal extension plate 314 and the frame member 101, the spacer member 37 is arranged. The spacer member 37 is composed of a plurality of sheets, and the thickness of the sheet for filling the gap is set according to the size of the gap between the indoor-side plane 314a of the indoor-side horizontal extension plate 314 and the frame member 101.

[0039] The indoor-side downward extension part 315 extends downward from the lower end of the end of the indoor side X2 of the attachment upper frame hollow part 312. The indoor-side lower-end horizontal protruding piece 316 protrudes into the indoor side X2 from the lower end of the indoor-side downward extension part 315.

[0040] The L-shaped hook piece 317 protrudes downward in an L shape from the outdoor-side X1 part of the lower surface of the outdoor-side indoor-outdoor direction extending part 311. When the attachment upper frame 31 is attached to the newly installed upper frame 21, as shown in Fig. 12, the L-shaped hook piece 317 is hooked on the protruding hook piece 214 of the newly installed upper frame 21. Note that the structure for fixing the attachment upper frame 31 to the newly installed upper frame 21 may be a structure fastened by screw fixation or the like instead of a hooking structure.

[0041] As shown in FIG. 10, the attachment lower frame 32 has an indoor-outdoor direction extending portion 321, an attachment lower frame hollow portion 322 (hollow portion) in which an outer peripheral side plane 322a is formed, an outdoor side vertically extending plate portion 323 (search direction extending plate portion), an indoor side horizontally extending plate 324 (extending plate), an indoor side upper extending portion 325, and an L-shaped hook piece 326.

[0042] The indoor-outdoor direction extending portion 321 and the attachment lower frame hollow portion 322 are arranged side by side in the indoor-outdoor direction. The indoor-outdoor direction extending portion 321 is arranged on the outdoor side X1, and the attachment lower frame hollow portion 322 is arranged on the indoor side X2. The indoor-outdoor direction extending portion 321 is formed at a position lower than the upper surface of the attachment lower frame hollow portion 322.

[0043] The outdoor side vertically extending plate portion 323 is formed in a plate shape extending downward from the end of the attachment lower frame hollow portion 322 on the outdoor side X1. The outdoor side vertically extending plate portion 323 is arranged on the outdoor side X1 and extends in the vertical direction (search direction). A pair of engaging protrusions 323a arranged vertically apart are formed above the surface of the outdoor side vertically extending plate portion 323 on the outdoor side X1. A pair of engaging protrusions 55 of the outdoor decorative cover 51 are engaged and attached to the pair of engaging protrusions 323a.

[0044] The attachment lower frame hollow portion 322 is formed in an elongated rectangular hollow shape extending in the indoor-outdoor direction. An outer peripheral side plane 322a is formed on the lower surface of the attachment lower frame hollow portion 322. The outer peripheral side plane 322a is formed on the outer peripheral side of the attachment frame 3 in the attachment lower frame 32. The outer peripheral side plane 322a faces the existing lower frame 62 and is formed in a planar shape extending in the indoor-outdoor direction and the horizontal direction. The outer peripheral side plane 322a is formed over the entire longitudinal direction of the attachment lower frame 32 and faces downward.

[0045] The outer peripheral side plane 322a is formed in a planar shape so as not to contact the inner peripheral side of the existing frame 6 when attaching the attachment frame 3 with the new frame 2 attached thereto to the inner peripheral side of the existing frame 6. In the present embodiment, as shown in FIG. 13, the outer peripheral side of the attachment lower frame 32 extends from the indoor side X2 to the outdoor side X1, from the space below the outer peripheral side plane 322a to the space in front of the outdoor side vertically extending plate portion 323, and from the space in front of the outdoor side vertically extending plate portion 323 downward. As shown by the virtual line (two-dot chain line), an L-shaped space S2 is formed by the space. The L-shaped space S2 is formed along the indoor side X2 surface and the outer peripheral side plane 322a of the outdoor side vertically extending plate portion 323 on the outer peripheral side of the attachment lower frame 32.

[0046] As a result, since the existing lower frame 62 can be accommodated in the L-shaped space S2, the attachment frame 3 with the new frame 2 attached thereto can be easily attached to the existing frame 6. In particular, in the present embodiment, as shown in FIG. 10, since the outer peripheral side plane 322a is formed along the indoor-outdoor direction of the attachment lower frame 32, the attachment lower frame 32 with the new lower frame 22 attached thereto can be attached to the existing lower frame 62 so as not to interfere with the attachment to various-shaped existing frames 6. When attaching the attachment frame 3 with the new frame 2 attached thereto to the existing frame 6, it is attached in a tilted state such that the lower end side is located closer to the existing frame 6 side than the upper end side. Therefore, after the existing lower frame 62 enters the L-shaped space S2, the entire attachment frame 3 is attached to the existing frame 6. Therefore, by accommodating the L-shaped space S2 in the existing lower frame 62, the attachment frame 3 with the new frame 2 attached thereto can be easily attached to the existing frame 6.

[0047] The indoor side horizontally extending plate 324 extends horizontally in the indoor side X2 direction from the end of the indoor side X2 at the upper end of the attachment lower frame hollow portion 322 as shown in FIG. 10. The indoor side plane 324a on the outer peripheral side of the attachment frame 3 in the indoor side horizontally extending plate 324 is formed on the same plane as the outer peripheral side plane 322a of the attachment lower frame 32. The indoor side plane 324a is formed in a planar shape over the entire longitudinal direction of the attachment lower frame 32.

[0048] When the indoor side horizontal extension plate 324 is fixed to the building 100 (frame), the screw 36 is arranged to penetrate it. Thus, the indoor side horizontal extension plate 324 is fixed to the building 100 (frame) by the screw 36. When a gap is formed between the indoor side plane 324a of the indoor side horizontal extension plate 324 and the frame member 101, a spacer member is arranged. The spacer member is composed of a plurality of sheets, and the thickness of the sheet for filling the gap is set according to the size of the gap between the indoor side plane 324a of the indoor side horizontal extension plate 324 and the frame member 101. In the present embodiment, since no gap is formed between the indoor side plane 324a of the indoor side horizontal extension plate 324 and the frame member 101, the spacer member is not arranged.

[0049] The indoor side upper extension portion 325 extends upward from the upper end portion of the end portion of the indoor side X2 of the attachment lower frame hollow portion 322.

[0050] The L-shaped hook piece 326 projects upward in an L-shape from the outdoor side X1 portion of the upper surface of the indoor-outdoor direction extending portion 321. When the attachment lower frame 32 is attached to the newly installed lower frame 22, as shown in FIG. 13, the L-shaped hook piece 326 is hooked on the L-shaped hook piece 224 of the newly installed lower frame 22. Note that, as a structure for fixing the attachment lower frame 32 to the newly installed lower frame 22, instead of the hooking structure, a structure for fastening by screw fixing or the like may be used.

[0051] The attachment vertical frame 33 is arranged in a so-called vertical-win structure in which the longitudinal end portion of the attachment vertical frame 33 is arranged outside the longitudinal end portions of the attachment upper frame 31 and the attachment lower frame 32. As shown in FIG. 11, the attachment vertical frame 33 has an attachment vertical frame hollow portion 331 (hollow portion) in which an outer peripheral side plane 331a is formed, an outdoor side left-right direction extending plate portion 332 (finding direction extending plate portion), an indoor side indoor direction extending portion 333 (extending plate), an indoor side side extending portion 334, an indoor side side end protruding piece 335, and a protruding hook piece 336.

[0052] The attachment vertical frame hollow portion 331 is formed in an elongated rectangular hollow shape extending in the indoor-outdoor direction. On the outer surfaces of the attachment vertical frame hollow portion 331 in the left-right direction, outer peripheral side flat surfaces 331a are formed. The outer peripheral side flat surfaces 331a are formed on the outer peripheral side of the attachment frame 3 in the attachment vertical frame 33. The outer peripheral side flat surfaces 331a are formed in a planar shape that faces the existing vertical frame 63 and extends in the indoor-outdoor direction and the up-down direction. The outer peripheral side flat surfaces 331a are formed over the entire longitudinal direction of the attachment vertical frame 33 and face the outside in the left-right direction.

[0053] The outer peripheral side flat surfaces 331a are formed in a planar shape so as not to hit the inner peripheral side of the existing frame 6 when attaching the attachment frame 3 with the new frame 2 attached to the inner peripheral side of the existing frame 6. In the present embodiment, on the outer peripheral side of the attachment vertical frame 33, as shown in FIGS. 14 and 15, from the indoor side X2 toward the outdoor side X1, an L-shaped space S3 is formed by the space outside the left-right direction of the outer peripheral side flat surface 331a and the space on the indoor side of the outdoor side left-right extending plate portion 332, as indicated by a virtual line (two-dot chain line). The L-shaped space S3 is formed along the indoor-side X2 surface of the outdoor side left-right extending plate portion 332 and the outer peripheral side flat surface 331a on the outer peripheral side of the attachment vertical frame 33.

[0054] Thereby, since the existing vertical frame 63 can be accommodated in the L-shaped space S3, the attachment frame 3 with the new frame 2 attached can be easily attached to the existing frame 6. In particular, in the present embodiment, as shown in FIG. 11, since the outer peripheral side flat surface 331a is formed along the indoor-outdoor direction of the attachment vertical frame 33, the attachment vertical frame 33 with the new vertical frame 23 attached can be attached to the existing vertical frame 63 so as not to interfere during attachment, corresponding to various shapes of the existing frame 6.

[0055] As shown in Fig. 11, the indoor-side indoor-direction extension part 333 extends from the end part on the outer side in the left-right direction of the attachment vertical-frame hollow part 331, which is the end part on the indoor side X2, toward the indoor side X2. The indoor-side plane 333a on the outer peripheral side of the attachment frame 3 in the indoor-side indoor-direction extension part 333 is formed on the same plane as the outer peripheral-side plane 331a of the attachment vertical-frame hollow part 331. The indoor-side plane 333a is formed in a planar shape over the entire longitudinal direction of the attachment vertical frame 33.

[0056] When the attachment frame 3 is fixed to the building 100 (frame), the screw 36 is arranged to penetrate through the indoor-side indoor-direction extension part 333. Thereby, the indoor-side indoor-direction extension part 333 is fixed to the building 100 (frame) by the screw 36. When a gap is formed between the indoor-side plane 333a of the indoor-side indoor-direction extension part 333 and the frame member 101, the spacer member 37 is arranged. The spacer member 37 is composed of a plurality of sheets, and the thickness of the sheet for filling the gap is set according to the size of the gap between the indoor-side plane 333a of the indoor-side indoor-direction extension part 333 and the frame member 101.

[0057] On the surface of the attachment vertical-frame hollow part 331 on the outdoor side X1, a pair of engaging protrusions 331b are formed, which are arranged apart from each other left and right. The pair of engaging protrusions 55 of the outdoor decorative cover 53 are engaged and attached to the pair of engaging protrusions 331b.

[0058] The outdoor-side left-right extending plate part 332 is formed in a plate shape that extends outward in the left-right direction from the end part on the outdoor side X1 of the attachment vertical-frame hollow part 331. The outdoor-side left-right extending plate part 332 is arranged on the outdoor side X1 and extends in the left-right direction (search direction).

[0059] The indoor-side side extension part 334 extends inward in the left-right direction from the end part on the indoor side X2 of the attachment vertical-frame hollow part 331. The indoor-side side-end protruding piece 335 protrudes toward the indoor side X2 from the end part on the inner side in the left-right direction of the indoor-side side extension part 334.

[0060] The protruding hook piece 336 protrudes toward the outdoor side X1 from the inner end in the left - right direction on the outdoor side X1 of the hollow part 331 of the attachment vertical frame. When attaching the attachment vertical frame 33 to the newly installed vertical frame 23, as shown in FIGS. 14 and 15, the protruding hook piece 336 is hooked on the L - shaped hook piece 234 of the newly installed vertical frame 23. Note that, as a structure for fixing the attachment vertical frame 33 to the newly installed vertical frame 23, instead of a hooking structure, it may be a structure fastened by screw fixation or the like.

[0061] As shown in FIG. 18, in the attachment vertical frame 33, a notch 337 is formed at the upper end of the inner plate portion 331c in the left - right direction of the hollow part 331 of the attachment vertical frame. The notch 337 is formed by being notched in a U - shaped manner that opens upward. The notch 337 is formed at the upper end of the attachment vertical frame 33 at the portion where the attachment upper frame 31 and the attachment vertical frame 33 are abutted, and communicates the horizontal gutter structure portion 310 of the attachment upper frame 31 with the hollow part 331 inside the attachment vertical frame 33.

[0062] At the portion where the attachment upper frame 31 and the attachment vertical frame 33 are abutted, a packing member 35 (water - stop member) is disposed between the attachment upper frame 31 and the attachment vertical frame 33. The packing member 35 is disposed between the longitudinal end of the attachment upper frame 31 and the longitudinal end of the attachment vertical frame 33.

[0063] In the packing member 35, at the portion where the notch 337 of the attachment vertical frame 33 is formed, a notch 351 having the same shape as the notch 337 of the attachment vertical frame 33 is formed. The packing member 35 ensures the water - stop performance between the attachment upper frame 31 and the attachment vertical frame 33.

[0064] By configuring the attachment upper frame 31 and the attachment vertical frame 33 in this way, the water that has entered the horizontal gutter structure portion 310 of the attachment upper frame 31 is guided by the horizontal gutter structure portion 310 to both end portions on the longitudinal direction sides of the attachment upper frame 31. Then, the water guided to both end portions on the longitudinal direction sides of the attachment upper frame 31 flows into the attachment vertical frame hollow portion 331 through the notch portion 337 of the attachment vertical frame 33 and is guided downward. Therefore, since the water can flow along the horizontal gutter structure portion 310 formed in the attachment upper frame 31, the drainage performance can be improved.

[0065] Here, as shown in FIG. 10, the existing lower frame 62 is disposed below the attachment vertical frame 33. The existing lower frame 62 receives the water that has flowed into the inside of the attachment vertical frame 33 at the lower side of the attachment vertical frame 33 and discharges it to the outside. Specifically, the water guided downward toward the attachment vertical frame 33 is received by the existing lower frame 62, guided to the lower step portion of the step portion of the existing lower frame 62, and discharged to the outside through a drainage portion (not shown) formed at the longitudinal end portion side of the lower step portion of the existing lower frame 62.

[0066] As shown in FIGS. 10 and 11, the indoor side decorative members 41, 42, and 43 are respectively attached to the resin angle members 213, 223, and 233 of the new frame 2. The boundary between the indoor side decorative members 41, 42, and 43 and the inner peripheral surface of the frame member 101 is shielded by a parting material 45 having an L-shaped cross section fixed to the frame member 101.

[0067] The indoor side decorative members 41, 42, and 43 have a cover body 46 and a cover attachment portion 47. For the indoor side decorative members 41, 42, and 43, the cover attachment portions 47 are respectively attached to the resin angle members 213, 223, and 233 of the new frame 2. The cover attachment portions 47 attached to the new upper frame 21 and the new vertical frame 23 have attachment engagement plates 471.

[0068] The cover attachment part 47 attached to the newly installed upper frame 21 is sandwiched and fitted and held between the prospective direction extension piece 213a (temporary fixing part, one-side holding part) of the resin angle member 213 and the indoor-side lower-end horizontal protruding piece 316 (temporary fixing part, the other-side holding part) of the attachment upper frame 31 as shown in Fig. 10, and is fixed by a screw 48 in a temporarily fixed state. The prospective direction extension piece 213a of the resin angle member 213 and the indoor-side lower-end horizontal protruding piece 316 of the attachment upper frame 31 constitute a temporary fixing part that can be fitted and temporarily fixed to the indoor-side decorative member 41.

[0069] The prospective direction extension piece 213a of the resin angle member 213 and the indoor-side lower-end horizontal protruding piece 316 of the attachment upper frame 31 are arranged opposite to each other so that the attachment engagement plate 471 of the cover attachment part 47 can be fitted and held. The attachment engagement plate 471 of the cover attachment part 47 is sandwiched, fitted, and held between the prospective direction extension piece 213a of the resin angle member 213 and the indoor-side lower-end horizontal protruding piece 316 of the attachment upper frame 31.

[0070] The cover attachment part 47 attached to the newly installed lower frame 22 is fixed by a screw 48 to the lower part of the prospective direction extension piece 213a of the resin angle member 213 as shown in Fig. 10.

[0071] The cover attachment part 47 attached to the newly installed vertical frame 23 is sandwiched and fitted and held between the prospective direction extension piece 233a (temporary fixing part, one-side holding part) of the resin angle member 233 and the indoor-side side-end protruding piece 335 (temporary fixing part, one-side holding part) of the attachment vertical frame 33 as shown in Fig. 11, and is fixed by a screw 48 in a temporarily fixed state. The prospective direction extension piece 233a of the resin angle member 233 and the indoor-side side-end protruding piece 335 of the attachment vertical frame 33 constitute a temporary fixing part that can be fitted and temporarily fixed to the indoor-side decorative member 41.

[0072] The prospective direction extension piece 233a of the resin angle member 233 and the indoor-side lateral end protruding piece 335 of the attachment vertical frame 33 are arranged to face each other so that the attachment engagement plate 471 of the cover attachment portion 47 can be fitted and held. The attachment engagement plate 471 of the cover attachment portion 47 is sandwiched, fitted, and held between the prospective direction extension piece 233a of the resin angle member 233 and the indoor-side lateral end protruding piece 335 of the attachment vertical frame 33.

[0073] The attachment engagement plate 471 of the cover attachment portion 47 attached to the new upper frame 21 can be temporarily fixed between the prospective direction extension piece 213a of the resin angle member 213 and the indoor-side lower end horizontal protruding piece 316 of the attachment upper frame 31. The attachment engagement plate 471 is formed to have a length that is arranged and temporarily fixed between the prospective direction extension piece 213a of the resin angle member 213 and the indoor-side lower end horizontal protruding piece 316 of the attachment upper frame 31. An engagement protrusion 471a is formed at one end of the attachment engagement plate 471. The engagement protrusion 471a protrudes toward the indoor-side lower end horizontal protruding piece 316 side of the attachment upper frame 31.

[0074] Thus, in the cover attachment portion 47 attached to the new upper frame 21, when the attachment engagement plate 471 is arranged between the prospective direction extension piece 213a of the resin angle member 213 and the indoor-side lower end horizontal protruding piece 316 of the attachment upper frame 31, the engagement protrusion 471a is engaged, so that the cover attachment portion 47 is fitted, and when the indoor-side decorative member 41 is attached, the hand can be released from the indoor-side decorative member 41 and temporarily fixed. After being temporarily fixed, the indoor-side decorative member 41 is fixed by screws 48 from the lower side.

[0075] The attachment engaging plate 471 of the cover attachment part 47 attached to the newly installed lower frame 22 can be temporarily fixed between the prospective direction extension piece 233a of the resin angle member 233 and the indoor side lateral end protruding piece 335 of the attachment vertical frame 33. The attachment engaging plate 471 is formed to have a length that is disposed and temporarily fixed between the prospective direction extension piece 233a of the resin angle member 233 and the indoor side lateral end protruding piece 335 of the attachment vertical frame 33. An engaging protrusion 471a is formed at one end of the attachment engaging plate 471. The engaging protrusion 471a protrudes toward the indoor side lateral end protruding piece 335 side of the attachment vertical frame 33.

[0076] Accordingly, in the cover attachment part 47 attached to the newly installed lower frame 22, similar to the attachment upper frame 31, when the attachment engaging plate 471 is disposed between the prospective direction extension piece 233a of the resin angle member 233 and the indoor side lateral end protruding piece 335 of the attachment vertical frame 33, the engaging protrusion 471a is engaged, so that the cover attachment part 47 is fitted, and when attaching the indoor side decorative member 41, the hand can be released from the indoor side decorative member 43 and temporarily fixed. The indoor side decorative member 42 is fixed by screws 48 after being temporarily fixed.

[0077] As shown in FIGS. 10 and 11, the outdoor side decorative covers 51, 52, 53 are respectively attached to the attachment upper frame 31, the attachment lower frame 32, and the attachment vertical frame 33. The outdoor side decorative covers 51, 52, 53 have a prospective direction extending plate 54 having a surface facing the outdoor side X1, and a pair of engaging protrusions 55 formed on the back side of the prospective direction extending plate 54.

[0078] The prospective direction extending plates 54 of the outdoor side decorative covers 51, 52, 53 are each formed in a plate shape extending along the attachment upper frame 31, the attachment lower frame 32, and the attachment vertical frame 33 respectively.

[0079] The outdoor decorative covers 51, 52, and 53 are respectively attached to the attachment upper frame 31, the attachment lower frame 32, and the attachment vertical frame 33 by engaging a pair of engaging protrusions 55 with a pair of engaging protrusions 313a, 323a, and 333b of the attachment upper frame 31, the attachment lower frame 32, and the attachment vertical frame 33.

[0080] In addition, as shown in FIGS. 10 and 11, the retrofit fitting 1 has an airtight structure 70. The airtight structure 70 is configured to connect the existing frame 6 side and the new frame 2 side by airtight tapes (existing frame side airtight tape 71, connecting airtight tape 72) to connect the existing frame 6 and the attachment frame 3 attached to the new frame 2. The airtight structure 70 is arranged to connect the existing frame 6 and the attachment frame 3 attached to the new frame 2 in order to improve the airtight performance between the existing frame 6 and the new frame 2.

[0081] As shown in FIGS. 10 and 11, the airtight structure 70 includes an existing frame side airtight tape 71 (existing frame side airtight sheet material) at least partially attached to the existing frame 6, and a connecting airtight tape 72 (connecting airtight sheet material) that connects the existing frame side airtight tape 71 and the attachment frame 3. As the existing frame side airtight tape 71 and the connecting airtight tape 72, for example, an airtight waterproof tape provided with an acrylic adhesive on one side can be used.

[0082] The existing frame side airtight tape 71 is attached across the existing frame 6 (existing upper frame 61, existing lower frame 62, existing vertical frame 63) and the building 100 (frame). By attaching the existing frame side airtight tape 71 across the existing frame 6 (existing upper frame 61, existing lower frame 62, existing vertical frame 63) and the building 100 (frame), the unevenness on the surface of the frame member 101 and the rough parts of the surface are flattened to form a base for attaching the connecting airtight tape 72.

[0083] The connecting airtight tape 72 is bent in a stepped shape, with one end side attached to the attachment frame 3 (attachment upper frame 31, attachment lower frame 32, attachment vertical frame 33), and the other end side overlapping and attached to the existing frame side airtight tape 71.

[0084] The existing frame side airtight tape 71 is formed to extend over the entire longitudinal direction of each of the existing upper frame 61, the existing lower frame 62, and the existing vertical frame 63. The connecting airtight tape 72 is formed to extend over the entire longitudinal direction of each of the attachment upper frame 31, the attachment lower frame 32, and the attachment vertical frame 33.

[0085] As described above, by having the airtight structure 70 configured to connect the existing frame 6 side and the new frame 2 side with airtight tapes (the existing frame side airtight tape 71 and the connecting airtight tape 72), the existing frame side airtight tape 71 attached to the existing frame 6 and the building 100 (the structure) and the connecting airtight tape 72 attached to the attachment frame 3 (the attachment upper frame 31, the attachment lower frame 32, the attachment vertical frame 33) overlap, and an airtight line can be secured at the portion where a part of the existing frame side airtight tape 71 and a part of the connecting airtight tape 72 overlap doubly, so that the airtight performance can be ensured.

[0086] The procedure for constructing the retrofit fitting 1 will be described. When constructing the retrofit fitting 1, first, the attachment frame 3 is assembled on the outer periphery of the newly installed frame 2 incorporated on all four sides.

[0087] First, as shown in FIG. 9, in order to attach the attachment frame to the newly installed frame 2, the attachment upper frame 31, the attachment lower frame 32, and the attachment vertical frame 33 are respectively hooked and arranged on the newly installed upper frame 21, the newly installed lower frame 22, and the left and right newly installed vertical frames 23.

[0088] Specifically, as shown in FIG. 9, the attachment upper frame 31, the attachment lower frame 32, and a pair of attachment vertical frames 33 are assembled on the outer periphery of the newly installed frame 2 configured by assembling all four sides (attachment frame assembly step).

[0089] As for the order of assembling the attachment upper frame 31, the attachment lower frame 32, and the pair of attachment vertical frames 33, first, attach the attachment upper frame 31 to the newly installed upper frame 21 and attach the attachment lower frame 32 to the newly installed lower frame 22. Then, with the attachment upper frame 31 attached to the newly installed upper frame 21 and the attachment lower frame 32 attached to the newly installed lower frame 22, attach the pair of attachment vertical frames 33 to the newly installed vertical frame 23.

[0090] Specifically, to attach the attachment upper frame 31 to the newly installed upper frame 21, as shown in FIG. 12, in the portion closer to the outdoor side X1 in the indoor-outdoor direction, hook the L-shaped hook piece 317 of the attachment upper frame 31 on the protruding hook piece 214 of the newly installed upper frame 21, and on the indoor side X2 relative to the portion where the L-shaped hook piece 317 of the attachment upper frame 31 is hooked on the hook piece 214 of the newly installed upper frame 21, arrange and attach the attachment upper frame 31 on the outer surface of the newly installed upper frame 21. Thereby, attach the attachment upper frame 31 in a state of being hooked on the newly installed upper frame 21.

[0091] Also, to attach the attachment lower frame 32 to the newly installed lower frame 22, as shown in FIG. 13, in the portion closer to the outdoor side X1 in the indoor-outdoor direction, hook the L-shaped hook piece 224 of the attachment lower frame 32 on the L-shaped hook piece 326 of the newly installed lower frame 22, and on the indoor side X2 relative to the portion where the L-shaped hook piece 224 of the attachment lower frame 32 is hooked on the L-shaped hook piece 326 of the newly installed lower frame 22, arrange and attach the attachment lower frame 32 on the outer surface of the newly installed lower frame 22. Thereby, attach the attachment lower frame 32 in a state of being hooked on the newly installed lower frame 22.

[0092] After that, as shown in FIGS. 16 and 17, with the attachment upper frame 31 attached to the newly installed upper frame 21 and the attachment lower frame 32 attached to the newly installed lower frame 22, as shown in FIGS. 14 and 15, the attachment vertical frame 33 is attached to the newly installed vertical frame 23. In this case, as shown in FIGS. 14 and 15, at a portion closer to the outdoor side X1 in the indoor-outdoor direction, the protruding hook piece 336 of the attachment vertical frame 33 is hooked on the L-shaped hook piece 234 of the newly installed vertical frame 23, and on the indoor side X2 with respect to the portion where the protruding hook piece 336 of the attachment vertical frame 33 is hooked on the L-shaped hook piece 234 of the newly installed vertical frame 23, the attachment vertical frame 33 is disposed and attached to the outer surface of the newly installed vertical frame 23. Thereby, the attachment vertical frame 33 is attached in a state of being hooked on the newly installed vertical frame 23.

[0093] Next, as shown in FIGS. 16 and 17, the longitudinal ends of the attachment upper frame 31 and the attachment vertical frame 33 are fixed to each other by screws 34, and the longitudinal ends of the attachment lower frame 32 and the attachment vertical frame 33 are fixed to each other by screws 34 (attachment frame fastening step).

[0094] Here, as shown in FIGS. 16 and 17, the upper end portion and the lower end portion of the so-called vertically dominant structure attachment vertical frame 33 are fixed to the end surface of the longitudinal end portion of the attachment upper frame 31 by screws 34 from the outer sides in the left-right direction. Thereby, in each of the left and right attachment vertical frames 33, the upper end portion of the attachment vertical frame 33 is fixed to the end surface of the longitudinal end portion of the attachment upper frame 31 by screws 34, and the lower end portion of the attachment vertical frame 33 is fixed to the end surface of the longitudinal end portion of the attachment lower frame 32 by screws 34. In this way, the attachment frame 3 assembled in the four sides is attached to the four circumferences of the outer periphery of the newly installed frame 2.

[0095] As described above, the attachment frame 3 is attached in a state of being hooked on the newly installed frame 2, and the longitudinal ends of the attachment upper frame 31 and the attachment vertical frame 33 are fixed to each other by screws 34, and the longitudinal ends of the attachment lower frame 32 and the attachment vertical frame 33 are fixed to each other by screws 34, so that the attachment frame 3 can be firmly attached to the outside of the newly installed frame 2. In addition, since the attachment frame 3 is assembled and attached to the outside of the four circumferences of the newly installed frame 2, the water stop performance can be improved.

[0096] In this embodiment, the longitudinal ends of the attachment upper frame 31 and the attachment vertical frame 33 and the longitudinal ends of the attachment lower frame 32 and the attachment vertical frame 33 are fixed to each other by screws 34, but it is not limited to this. When the sizes of the attachment upper frame 31, the attachment lower frame 32, and the attachment vertical frame 33 are large, screw fixation may be performed at a position inside rather than at the longitudinal ends of the attachment upper frame 31 and the attachment vertical frame 33.

[0097] Subsequently, as shown in FIG. 10, the newly installed upper frame 21 and the attachment upper frame 31 are fixed by a plurality of screws 38 arranged along the longitudinal direction. In addition, the newly installed lower frame 22 and the attachment lower frame 32 are fixed by a plurality of screws 38 arranged along the longitudinal direction. Further, as shown in FIG. 11, the newly installed vertical frame 23 and the attachment vertical frame 33 are fixed by a plurality of screws 38 arranged along the longitudinal direction. Thereby, the attachment frame 3 can be firmly fixed to the newly installed frame 2. The number of screws 38 arranged along the longitudinal direction varies depending on the sizes of the newly installed frame 2 and the attachment frame 3. For example, when the sizes of the newly installed frame 2 and the attachment frame 3 are large, it is necessary to increase the number of screws from the viewpoint of fixing strength.

[0098] Next, the newly installed frame 2 with the attachment frame 3 assembled is inserted into the inside of the existing frame 6 from the indoor side X2 of the existing frame 6. Here, if the newly installed frame 2 with the attachment frame 3 assembled is inserted into the inside of the existing frame 6 while standing vertically from the indoor side X2 of the existing frame 6, the outdoor side vertically extending plate portions 313 and 323 and the indoor side indoor direction extending portion 333 of the attachment frame 3 will hit the existing frame 6. Therefore, from the indoor side X2 of the existing frame 6, while tilting the newly installed frame 2 with the attachment frame 3 diagonally, it is inserted into the inside of the existing frame 6, taken out once to the outdoor side X1 of the existing frame 6, and then the newly installed frame 2 with the attachment frame 3 is pulled towards the existing frame 6 from the outdoor side X1 of the existing frame 6. Thereby, the outdoor side vertically extending plate portions 313 and 323 and the indoor side indoor direction extending portion 333 of the attachment frame 3 are arranged close to the surface of the outdoor side X1 of the existing frame 6, and the attachment frame 3 is attached to the existing frame 6 and fixed in this state.

[0099] Subsequently, as shown in FIG. 19, the indoor side horizontal extending plates 314 and 324 and the indoor side indoor direction extending portion 333 of the attachment frame 3 are temporarily fixed to the building 100 (frame) with screws 36.

[0100] Then, as shown in FIG. 20, a plurality of spacer members 37 are arranged between the indoor side horizontal extending plates 314 and 324, the indoor side indoor direction extending portion 333 and the frame member 101.

[0101] As shown in FIG. 21, the plurality of spacer members 37 are arranged at a plurality of positions spaced apart in the longitudinal direction of the attachment upper frame 31 and the attachment vertical frame 33. The spacer member 37 is composed of a plurality of sheets, and the number of sheets is set according to the size of the gap between the indoor side horizontal extending plates 314 and 324, the indoor side indoor direction extending portion 333 and the frame member 101.

[0102] As shown in Fig. 20, the spacer member 37 has a U-shaped groove 371, and is inserted and arranged such that the U-shaped groove is arranged along the shaft portion of the screw 36. When attaching the attachment frame 3 to the existing frame 6, the spacer member 37 is arranged along the indoor side planes 314a, 324a, 333a formed on the same plane as the outer peripheral side planes 312a, 322a, 331a as shown in Figs. 10 and 11. Thereby, the spacer member 37 can be arranged in a stable state between the indoor side planes 314a, 324a, 333a and the frame member 101. In this state, the screw 36 is fixedly installed. As an example of the spacer member 37, a thin plate-like member formed of a resin material or the like can be mentioned.

[0103] Here, as shown in Figs. 10 and 11, the retrofit fitting 1 of the present embodiment has an airtight structure 70 configured to connect the existing frame 6 side and the new frame 2 side with airtight tapes (existing frame side airtight tape 71, connecting airtight tape 72). The airtight structure 70 has two airtight tapes (existing frame side airtight tape 71, connecting airtight tape 72), and by connecting the existing frame 6 and the attachment frame 3 attached to the new frame 2 with the two airtight tapes (existing frame side airtight tape 71, connecting airtight tape 72), the airtight performance can be improved.

[0104] Specifically, in the airtight structure 70, the existing frame side airtight tape 71 is attached so as to straddle the existing frame 6 (existing upper frame 61, existing lower frame 62, existing vertical frame 63) and the building 100 (frame), and the connecting airtight tape 72 is attached so as to straddle the existing frame side airtight tape 71, the attachment frame 3 (attachment upper frame 31, attachment lower frame 32, attachment vertical frame 33), and the spacer member 37.

[0105] The existing frame side airtight tape 71 has the role of ensuring the airtight performance and watertight performance between the existing vertical frame 63 and the building 100 (the building structure) and preventing moisture from being transmitted to the building 100 (the building structure) side. Further, the connecting airtight tape 72 ensures the airtight performance and watertight performance between the attachment frame 3 (the attachment upper frame 31, the attachment lower frame 32, the attachment vertical frame 33), the spacer member 37, and the building 100 (the building structure). Then, the airtight performance and watertight performance can be improved by the overlapping of the existing frame side airtight tape 71 attached to the existing frame 6 and the building 100 (the building structure) and the connecting airtight tape 72 attached to the attachment frame 3 (the attachment upper frame 31, the attachment lower frame 32, the attachment vertical frame 33).

[0106] Next, as shown in FIG. 7, the indoor decorative member 41 is attached to the surface on the indoor side X2 of the attachment frame 3 with the length of the tip side of the cover body 46 of the indoor decorative member 41 adjusted.

[0107] As shown in FIGS. 10 and 22, in the indoor decorative member 41 attached to the new upper frame 21, as shown in FIGS. 10 and 11, the attachment engaging plate 471 of the cover attachment portion 47 of the indoor decorative member 41 is disposed between the projected direction extension piece 213a of the resin angle member 213 and the indoor side lower end horizontal projecting piece 316 of the attachment upper frame 31, thereby engaging the engaging projection 471a. Thereby, the attachment engaging plate 471 of the cover attachment portion 47 is fitted and held, and the indoor decorative member 41 is temporarily fixed.

[0108] In this temporarily fixed state, when the hand is released from the indoor decorative member 41, the indoor decorative member 41 can be temporarily held and fixed between the projected direction extension piece 213a of the resin angle member 213 and the indoor side lower end horizontal projecting piece 316 of the attachment upper frame 31. In this state, the indoor decorative member 41 is moved upward from the lower side by the screw 48 and fixed by the screw 48. Thereby, since the operator can release the hand from the indoor decorative member 41, the workability of attaching the indoor decorative member 41 can be further improved.

[0109] As shown in FIG. 10, in the indoor decorative member 41 attached to the newly installed lower frame 22, with the cover attachment portion 47 of the indoor decorative member 41 disposed below the projected direction extension piece 223a of the resin angle member 223, a screw 48 is moved from the upper side to the lower side and fixed by the screw 48.

[0110] As shown in FIG. 11, in the indoor decorative member 41 attached to the newly installed vertical frame 23, the attachment engaging plate 471 of the cover attachment portion 47 of the indoor decorative member 41 is disposed between the projected direction extension piece 233a of the resin angle member 233 and the indoor side lateral end protruding piece 335 of the attachment vertical frame 33, thereby engaging the engaging protrusion 471a. Thereby, the attachment engaging plate 471 of the cover attachment portion 47 can be fitted and held, and the indoor decorative member 43 can be temporarily fixed.

[0111] In this temporarily fixed state, when the hand is released from the indoor decorative member 43, the indoor decorative member 43 can be temporarily held and fixed between the projected direction extension piece 233a of the resin angle member 233 and the indoor side lateral end protruding piece 335 of the attachment vertical frame 33. In this state, the screw 48 is moved from the inner side to the outer side in the left - right direction and fixed by the screw 48. Thereby, since the operator can release the hand from the indoor decorative member 41, the attachment work can be facilitated.

[0112] Next, as shown in FIG. 5, outdoor decorative covers 51, 52, 53 with the length of the tip side adjusted are attached to the outdoor side X1 surface of the attachment frame 3. Thereby, the unevenness of the attachment frame 3 is covered by the outdoor decorative covers 51, 52, 53, and since the planar surface of the outdoor side X1 of the outdoor decorative covers 51, 52, 53 is exposed to the outdoor side X1, the design property can be improved. Also, the outdoor decorative covers 51, 52, 53 can be stably attached to the attachment frame 3 assembled in a four - side manner.

[0113] According to this embodiment, the following effects can be achieved. The retrofit fitting 1 of this embodiment is attached to an existing frame 6 provided at an opening of a building 100, and includes a newly installed frame 2 configured by assembling four sides, and an attachment frame 3 configured by assembling four sides and disposed between the newly installed frame 2 and the existing frame 6. The attachment frame 3 has an attachment upper frame 31 disposed at the upper part and extending in the lateral direction, and the attachment upper frame 31 has a horizontal gutter structure portion 310 formed to be open upward and extending in the lateral direction. Thereby, since water can flow along the horizontal gutter structure portion 310 formed in the attachment upper frame 31, the drainage performance can be improved.

[0114] Also, in this embodiment, the attachment frame 3 has an attachment vertical frame 33 disposed on the end side in the longitudinal direction of the attachment upper frame 31, and the attachment vertical frame 33 has a notch portion 337 that communicates the horizontal gutter structure portion 310 of the attachment upper frame 31 with the inside of the attachment vertical frame 33. Thereby, the water flowing through the horizontal gutter structure portion 310 can flow into the inside of the attachment vertical frame 33 through the notch portion 337. Therefore, since water can flow downward through the attachment vertical frame 33, the drainage performance can be improved.

[0115] Also, in this embodiment, a packing member 35 is provided between the end in the longitudinal direction of the attachment upper frame 31 and the end in the longitudinal direction of the attachment vertical frame 33. Thereby, since the water flowing from the horizontal gutter structure portion 310 into the attachment vertical frame 33 can be stopped by the packing member 35, the water-stopping performance can be improved by the packing member 35.

[0116] Also, in this embodiment, the existing frame 6 has an existing lower frame 62 disposed below the attachment vertical frame 33, and the existing lower frame 62 receives the water flowing into the inside of the attachment vertical frame 33 at the lower side of the attachment vertical frame 33 and discharges it to the outside. Thereby, since the water flowing through the attachment vertical frame 33 can be received and stopped by the existing lower frame 62 and discharged to the outside, the drainage performance can be improved.

[0117] As described above, a preferred embodiment of the present disclosure has been explained. However, the present disclosure is not limited to the above-described embodiment and can be appropriately modified.

[0118] For example, as shown in the modified form shown in FIG. 24, for example, the optional member 11 may be configured to be attached to the indoor side X2 of the new lower frame 22A or the attachment lower frame 32A. Thereby, by attaching the optional member 11 to the indoor side X2 of the new lower frame 22A or the attachment lower frame 32A, various members can be attached to the optional member 11. As in the modified form shown in FIG. 24, for example, when applying the retrofit fitting of the present embodiment to the retrofit fitting of a bathroom, a base material 12 for installing a frame such as a bathroom can be arranged above the optional member 11.

[0119] Further, for example, the width of the attachment frame 3 (attachment upper frame 31, attachment lower frame 32, attachment vertical frame 33) in the finding direction may be formed larger than the width in the finding direction of the above embodiment. For example, when applying the retrofit fitting of the present embodiment to the opening of the entrance / exit of a conventional bathroom where tiles are provided to form a unit bath, in order to ensure the strength of the wall of the unit bath, the size of the opening of the unit bath may be made smaller compared to the opening of the conventional bathroom. In such a case, by using the one in which the width of the attachment frame 3 (attachment upper frame 31, attachment lower frame 32, attachment vertical frame 33) in the finding direction is formed larger than the width in the finding direction of the above embodiment, a retrofit fitting with a smaller opening size of the unit bath can be provided.

[0120] In the above embodiment, the case where the retrofit fitting 1 is applied to a sliding window type retrofit sash has been described, but it is not limited thereto. The retrofit fitting may be applied to, for example, an opening / closing type retrofit fitting in which the door body rotates around a rotation axis to open and close, or a vertically sliding type retrofit fitting. Further, the retrofit fitting may be applied to, for example, a FIX type retrofit fitting that is fixedly attached without opening and closing with respect to the frame.

[0121] In the above-described embodiment, in the airtight structure 70, an airtight tape (existing frame side airtight tape 71, connecting airtight tape 72) is used, but the present invention is not limited thereto. In the airtight structure 70, for example, a sheet material (airtight attachment sheet) provided with an adhesive at the attachment portion may be used.

Explanation of Signs

[0122] 1 Refitted fitting, 2 Newly installed frame, 3 Attachment frame, 6 Existing frame, 31 Attachment upper frame, 33 Attachment vertical frame, 35 Packing member (waterstop member) 62 Existing lower frame, 310 Horizontal gutter structure portion, 337 Notch portion, 100 Building

Claims

1. A retrofit fitting to be attached to an existing frame provided at an opening of a building, comprising: A newly formed frame configured by assembling four sides; and An attachment frame configured by assembling four sides and disposed between the newly formed frame and the existing frame. The attachment frame has an attachment upper frame disposed at the upper part and extending in the lateral direction, and an attachment vertical frame disposed at an end side in the longitudinal direction of the attachment upper frame. The attachment upper frame has a horizontal gutter structure portion formed to be open upward and extending in the lateral direction. The attachment vertical frame has a notch portion that communicates the horizontal gutter structure portion of the attachment upper frame with the inside of the attachment vertical frame. The notch portion is disposed on an extension line in the lateral direction of the horizontal gutter structure portion, and is a retrofit fitting.

2. The retrofit fitting according to Claim 1, wherein the notch portion is formed in a U shape that opens upward at an upper end portion of the attachment vertical frame.

3. The retrofit fitting according to Claim 1 or 2, wherein the horizontal gutter structure portion is provided on the outdoor side of the attachment upper frame.

4. The retrofit fitting according to any one of Claims 1 to 3, wherein the attachment upper frame has an attachment upper frame hollow portion disposed on the indoor side of the horizontal gutter structure portion.

5. The attachment upper frame has an outdoor side vertically extending plate portion that constitutes a wall portion at an end on the outdoor side of the horizontal gutter structure portion, and the outdoor side vertically extending plate portion extends up to a position of an existing upper frame of the existing frame in the vertical direction. The retrofit fitting according to any one of Claims 1 to 4.

6. The attachment upper frame has an outdoor side indoor / outdoor direction extending portion that constitutes a bottom portion of the horizontal gutter structure portion, and a hook piece that protrudes from the outdoor side indoor / outdoor direction extending portion toward the newly formed upper frame side of the newly formed frame and is hooked on the newly formed upper frame. The retrofit fitting according to any one of Claims 1 to 5.

Images