Renovated sash

Abstract

To provide a renovated sash for allowing base materials to be screwed to fixed surfaces without being inclined.SOLUTION: A renovated sash 1 includes existing frames remaining in an opening 2 of a building, new frames mounted covering an area on the inner periphery side of the existing frames, and base materials 130, 230, 330, 430 arranged between the existing frames and the new frames. The ends on the indoor side of the base materials are mounted at clearances D from mounted faces, respectively. For example, at the ends on the indoor side of the base materials 130, 230, 330, 430, there are protruded leg parts 133a, 133b, 235a, 235b, 235c, 333, 433 protruded toward the mounted face so that the clearances D are formed between the front ends of the protruded leg parts and the mounted face.SELECTED DRAWING: Figure 13

Description

[Technical field]

[0001] The present invention relates to a retrofit sash for retrofitting an existing window in a building into a new window. [Background technology]

[0002] Conventionally, a covering method has been adopted as a method for renovating existing windows. In a renovated sash using this covering method, a new frame is attached to the existing frame installed in the opening of a building so as to cover the inner periphery of the existing frame (see, for example, Patent Document 1).

[0003] Also known as retrofit sashes are those in which a base material is provided between the existing frame and the new frame to serve as the mounting surface for the new frame (see, for example, Patent Documents 2 and 3). The base material is attached so as to cover the inner periphery of the existing frame across the interior and exterior directions of the existing frame. At this time, the indoor end of the base material is fixed by screws to the interior side of the existing frame (for example, the frame material or the angle part of the existing frame). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-94771 A [Patent Document 2] JP 2017-172315 A [Patent Document 3] JP 2015-132148 A Summary of the Invention [Problem to be solved by the invention]

[0005] The present disclosure aims to provide a renovated sash that allows a newly installed frame to be easily screwed to a base material. [Means for solving the problem]

[0007] This disclosureThe frame includes an existing frame (e.g., an existing upper frame 110, an existing lower frame 210, and an existing vertical frame 310, 410, which will be described later) remaining in an opening of a building (e.g., an opening 2, which will be described later), a new frame (e.g., a new upper frame 120, a new lower frame 220, and a new vertical frame 320, 420, which will be described later) that is attached so as to cover the inner periphery of the existing frame, and a base material (e.g., See below A remodeled sash (for example, the remodeled sash 1 described below) comprising an upper frame base material 130, a lower frame base material 230, and vertical frame base materials 330, 430), The newly installed frame (for example, the newly installed upper frame 120 and the newly installed lower frame 220 described later) has a hollow portion, and holes for passing screws (for example, the mounting screws 126a, 126b, and 225 described later) are provided in the outer peripheral side wall portion and the inner peripheral side wall portion constituting the hollow portion. . [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is a front view of a retrofit sash according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a vertical cross-sectional view of the remodeled sash shown in FIG. [Diagram 3] FIG. 2 is a cross-sectional view of the remodeled sash shown in FIG. 1. [Figure 4] 3 is an enlarged vertical cross-sectional view showing a main portion of the upper side of the remodeled sash shown in FIG. 2. [Diagram 5] 3 is an enlarged vertical cross-sectional view showing a main part of the lower side of the remodeled sash shown in FIG. 2. [Figure 6] 3 is an enlarged cross-sectional view showing a main portion on the left side of the remodeled sash shown in FIG. 2. [Figure 7] 3 is an enlarged cross-sectional view showing a main portion on the right side of the remodeled sash shown in FIG. 2. [Figure 8] This is an oblique view showing the base material attached to the inner periphery of the existing frame of the renovated sash. [Figure 9] An oblique view of the upper frame base material. [Figure 10] A partial oblique view of the upper frame base material from the back side. [Figure 11] FIG. 4 is a front view of the mounting member as seen from the indoor side. [Figure 12] FIG. [Figure 13] A diagram explaining the mounting structure of the indoor end of the upper frame base material. [Figure 14]An oblique view of the lower frame base material. [Figure 15] A diagram explaining the mounting structure of the indoor end of the lower frame base material. [Figure 16] 1 is a cross-sectional view of a height adjustment mechanism seen from the front. [Figure 17] 4 is a cross-sectional side view of the height adjustment mechanism. FIG. [Figure 18] This is an oblique view of the back side of the vertical frame base material viewed from the outdoors side. [Figure 19] A diagram explaining the mounting structure of the indoor end of the vertical frame base material. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 is a front view of a remodeled sash according to one embodiment of the present invention, Fig. 2 is a vertical cross-sectional view of the remodeled sash shown in Fig. 1, and Fig. 3 is a horizontal cross-sectional view of the remodeled sash shown in Fig. 1. Fig. 4 is a vertical cross-sectional view showing an enlarged view of the upper main part of the remodeled sash shown in Fig. 2, Fig. 5 is a vertical cross-sectional view showing an enlarged view of the lower main part of the remodeled sash shown in Fig. 2, Fig. 6 is a horizontal cross-sectional view showing an enlarged view of the left main part of the remodeled sash shown in Fig. 2, and Fig. 7 is a horizontal cross-sectional view showing an enlarged view of the right main part of the remodeled sash shown in Fig. 2. Fig. 8 is a perspective view showing a state in which a base material is attached to the inner periphery side of the existing frame of the remodeled sash.

[0014] As shown in Fig. 1, a remodeled sash 1 according to the present invention is attached to the outdoor side of an opening 2 of a building, and comprises a window frame 10 framed in a rectangle by an upper frame 100, a lower frame 200, and a pair of left and right vertical frames 300, 400, a shoji screen 20 that is placed in the window frame 10 so as to be able to open and close, and a screen door 30 that is placed slidably in the window frame 10 on the indoor side of the shoji screen 20. A frame member 3 is provided around the inner periphery of the opening 2. Fig. 1 shows the remodeled sash 1 as seen from the outdoor side.

[0015] As shown in FIGS. 2 and 3, the shoji 20 shown in this embodiment is a sliding type shoji composed of a plurality of glasses including two glasses 22, 22 on the indoor side and the outdoor side and a spacer 23 sandwiched between these glasses 22, 22 within a frame 21 extending around the perimeter, and has excellent heat insulation properties. The shoji 20 is configured to rotate by operating a lever 24 attached to the indoor side, open toward the outdoor side, and close toward the indoor side.

[0016] The screen door 30 is housed in a groove portion 11 provided around the perimeter of the window frame 10. As shown in FIG. 3, the screen door 30 has a net portion 31 that can be folded in the left-right direction, and in a state where the net portion 31 is folded, it is housed on one vertical frame 300 side. This screen door 30 is configured to be extended to the indoor side of the shoji 20 by sliding a vertical frame portion 32 attached to the end of the net portion 31 toward the vertical frame 400 side, and to be folded by sliding the vertical frame portion 32 toward the vertical frame 300 side. FIG. 3 shows a state where the screen door 30 is folded to the vertical frame 300 side, and a state where the screen door 30 is extended is indicated by a dashed line.

[0017] Next, the window frame 10 will be described. <A. Upper frame> First, the upper frame 100 will be described. As shown in FIGS. 2 and 4, the upper frame 100 is composed of an existing upper frame 110, a new upper frame 120, and an upper frame base material 130.

[0018] a1. Existing upper frame The existing upper frame 110 is made of a metal frame body and is attached to the outdoor side of the upper side portion of the opening 2 of the building. The existing upper frame 110 has an outdoor side wall portion 111 extending downward at its outdoor side end. The outdoor side wall portion 111 is the root portion of the existing side wall portion 111a (shown by a dashed line in FIG. 4) originally provided on the existing upper frame 110 before being refitted to the refitted sash 1 when the existing side wall portion 111a was cut. The lower end portion of the outdoor side wall portion 111 is located above the position of the inner peripheral surface 3a of the frame member 3.

[0019] The existing upper frame 110 has an angle portion 112 integrally formed at its indoor end portion so as to protrude toward the indoor side. The angle portion 112 is fixed to the outdoor end portion of the inner circumferential surface 3a of the frame member 3.

[0020] The existing upper frame 110 further has a protruding piece 113. The protruding piece 113 protrudes from the outdoor end of the angle portion 112 toward the inside of the opening 2 (the lower side of Figs. 2 and 4). This protruding piece 113 is a protruding piece remnant consisting of a root portion of the existing protruding piece 113a that was left uncut when the existing protruding piece 113a (shown by a broken line in Fig. 4) that was originally provided on the existing vertical frames 310, 410 before they were remodeled into the remodeled sash 1 was cut. The protruding piece 113 protrudes toward the inside of the opening 2 beyond the inner peripheral surface 3a of the frame member 3. In this embodiment, the protruding piece 113 protrudes toward the inside (downward) by about 5 mm beyond the inner peripheral surface 3a of the frame member 3.

[0021] a2. New upper frame The new upper frame 120 is attached to the inner periphery of the existing upper frame 110, with an upper frame base material 130 sandwiched therebetween. The new upper frame 120 is mainly made of a metal frame body, and has a protruding portion 121 on the outdoor side that protrudes further outdoors than the shoji screen 20. The protruding portion 121 slopes slightly downward toward the outdoor side, and has an outdoor side wall portion 122 that rises upward at its tip. The outdoor side wall portion 122 extends approximately parallel to and faces the outdoor side wall portion 111 of the existing upper frame 110, and is positioned so as to cover and conceal the entire outdoor side wall portion 111 from the outdoor side.

[0022] The outdoor side wall portion 122 has multiple ribs 122a to 122c that protrude toward the indoor side. The rib 122a is disposed at the upper end portion of the outdoor side wall portion 122. The ribs 122b and 122c are disposed lower than the rib 122a and protrude so as to abut against the outdoor side wall portion 132 of the upper frame base material 130 described below. These ribs 122a to 122c extend in parallel over the entire length of the new upper frame 120.

[0023] The new upper frame 120 has a resin angle member 123 at its indoor end that extends toward the indoor side. The angle member 123 is formed integrally with the groove portion 11 in which the screen door 30 is placed, and is disposed at a distance from the inner peripheral surface 3a of the frame member 3. A resin angle cover 124 is attached between the angle member 123 and the inner peripheral surface 3a of the frame member 3. The boundary between the angle cover 124 and the inner peripheral surface 3a of the frame member 3 is shielded by an L-shaped resin trim member 125. The trim member 125 is fixed to the inner peripheral surface 3a of the frame member 3 by mounting screws 125a.

[0024] The new upper frame 120 is fixed to the upper frame base material 130 via a spacer member 140 by a plurality of mounting screws 126a, 126b that penetrate the upper frame base material 130. The mounting screws 126a, 126b penetrate from the new upper frame 120 to the upper frame base material 130.

[0025] a3. Upper frame base material The upper frame base material 130 is disposed between the existing upper frame 110 and the new upper frame 120. As shown in Fig. 8, only one upper frame base material 130 is attached to the inner periphery side of the existing upper frame 110, and extends over substantially the entire length of the existing upper frame 110. The upper frame base material 130 is formed to be the same as the entire length of the new upper frame 120 or longer than the entire length of the new upper frame 120.

[0026] Details of the upper frame base material 130 are shown in Fig. 9. Fig. 9 is a perspective view of the upper frame base material 130. The upper frame base material 130 is made of metal, and integrally includes a base material main body 131, an outdoor side wall portion 132, and a plurality of protruding legs 133a to 133d.

[0027] The base material body 131 is made of a long plate-like member extending along the extension direction of the upper frame 100, and covers the inner periphery side of the existing upper frame 110 over substantially the entire length in the longitudinal direction and in the indoor-outdoor direction, thereby forming a substantially flat mounting surface for the new upper frame 120. The indoor end of the base material body 131 is disposed on the inner periphery surface 3a of the frame member 3 so as to cover the angle portion 112 of the existing upper frame 110. In this embodiment, the surface of the angle portion 112 of the existing upper frame 110 and the inner periphery surface 3a of the frame member 3 are used as the mounting surface for the indoor end of the upper frame base material 130.

[0028] The outdoor side wall portion 132 extends upward from the outdoor end portion of the base material main body 131. The outdoor side wall portion 132 extends approximately parallel to the outdoor side wall portion 111 of the existing upper frame 110, and is disposed between the outdoor side wall portion 122 of the new upper frame 120 and the outdoor side wall portion 111 of the existing upper frame 110 so as to cover approximately the lower half of the outdoor side wall portion 111 of the existing upper frame 110. The outdoor side wall portion 132 is disposed so as to abut against the ribs 122b, 122c provided on the outdoor side wall portion 122 of the new upper frame 120, but the upper end portion 132a of the outdoor side wall portion 132 is disposed below the rib 122a.

[0029] The protruding legs 133a to 133d are provided on the back surface (surface facing the existing upper frame 110) of the base material main body 131 so as to extend parallel to the length direction (extension direction of the upper frame 100) of the base material main body 131 toward the existing upper frame 110. As shown in Fig. 4, a pair of protruding legs 133a, 133b on the indoor side of the protruding legs 133a to 133d are disposed opposite the surface of the angle part 112 of the existing upper frame 110 and the inner peripheral surface 3a of the frame member 3, which are the mounting target surfaces, and protrude toward this mounting target surface.

[0030] The indoor-most protruding leg 133a is disposed at the indoor-most end of the base material main body 131. The indoor side of this protruding leg 133a forms the indoor side surface 130a of the upper frame base material 130. As shown in Fig. 4, this indoor side surface 130a is disposed on the same plane as the indoor side surface 120a of the newly-installed upper frame 120 excluding the angle cover 124. The angle cover 124 is attached across the indoor side surface 130a of the upper frame base material 130 and the indoor side surface 120a of the newly-installed upper frame 120 so as to cover these indoor side surfaces 120a, 130a.

[0031] Furthermore, the protruding legs 133a-133d also have the function of blocking rainwater that seeps in between the outdoor side wall 111 of the existing upper frame 110 and the outdoor side wall 132 of the upper frame base material 130, thereby preventing the rainwater from further seeping inside. In particular, the protruding leg 133d on the most outdoor side functions as a first dam that first blocks rainwater seeping in from the outdoor side.

[0032] a4. Mounting structure of upper frame base material As shown in Fig. 4, the outdoor side of the upper frame base material 130 is fixed to the outdoor side wall portion 111 of the existing upper frame 110 by a mounting member 40. Details of this mounting member 40 will be further explained with reference to Figs. 10 to 12. Fig. 10 is a partial perspective view of the upper frame base material 130 seen from the back side, Fig. 11 is a front view of the mounting member 40 seen from the indoor side, and Fig. 12 is a vertical cross-sectional view of the mounting member 40. Note that in Fig. 10, the existing upper frame 110 has been omitted from illustration in order to make it easier to understand the configuration.

[0033] The mounting member 40 comprises a base 41 attached to the back surface of the base material main body 131, a mounting piece 42 attached to the outdoor side wall portion 111 of the existing upper frame 110, and a height adjustment screw 43 consisting of a flat head screw rotatably held on the base 41. One or more mounting members 40 are provided depending on the length of the upper frame base material 130.

[0034] The base 41 is made of a flat metal plate, and a pair of support plate portions 41a, 41a are erected on the surface (the surface facing the existing upper frame 110). The support plate portions 41a, 41a are arranged parallel to each other along the indoor-outdoor direction, and erected at a predetermined interval in the longitudinal direction of the upper frame base material 130. The interval between the pair of support plate portions 41a, 41a is set to be approximately the same as the length of the mounting piece 42 (the length along the longitudinal direction of the upper frame base material 130), which will be described later.

[0035] As shown in Fig. 9, the base material main body 131 is formed with a plurality of elongated holes 136 for inserting screws that extend along the indoor / outdoor direction. The elongated holes 136 are arranged on the outdoor side of the protruding leg 133d that is the most outdoor side. Fig. 9 shows the upper frame base material 130 to which two mounting members 40 are attached, and two elongated holes 136 are provided for each set of mounting members 40. The base 41 is fixed to the base material main body 131 by mounting screws 44 that pass through these elongated holes 136. Since the elongated holes 136 are long in the indoor / outdoor direction, the fixed position of the base 41 in the indoor / outdoor direction can be fine-tuned.

[0036] The mounting piece 42 is made of a metal plate extending approximately parallel to the base material main body 131. A pair of clamping pieces 42a, 42a is erected on the upper surface (surface on the existing upper frame 110 side) of the mounting piece 42. The clamping pieces 42a, 42a extend along the length direction of the upper frame base material 130. As shown in FIG. 12, the clamping pieces 42a, 42a are accommodated from the lower side of the outdoor side wall portion 111 of the existing upper frame 110 so as to sandwich the outdoor side wall portion 111 therebetween. The mounting piece 42 extends so as to protrude toward the indoor side from below the outdoor side wall portion 111 sandwiched between the clamping pieces 42a, 42a, and is disposed so as to be sandwiched between a pair of support plate portions 41a, 41a on the base portion 41.

[0037] With the outdoor side wall 111 sandwiched between the pair of clamping pieces 42a, 42a, a mounting screw 45 is screwed through the mounting piece 42 from below. Here, the distance between the clamping pieces 42a, 42a is set slightly narrower than the sum of the thickness of the outdoor side wall 111 and the outer diameter of the threaded portion of the mounting screw 45. Therefore, the outdoor side wall 111 between the clamping pieces 42a, 42a is clamped between one of the clamping pieces 42a (the outdoor side clamping piece 42a in this embodiment) and the mounting screw 45. At this time, the threads of the mounting screw 45 bite into the outdoor side wall 111 and the clamping pieces 42a, respectively, so that the mounting screw 45 does not easily fall out, and the mounting piece 42 can be firmly fixed to the outdoor side wall 111.

[0038] 12, a double-sided tape 46 is interposed between the outdoor-side clamping piece 42a and the outdoor side wall portion 111, bonding the clamping piece 42a to the outdoor side wall portion 111. The double-sided tape 46 limits the relative movement between the clamping piece 42a and the outdoor side wall portion 111, and prevents the mounting piece 42 from sliding laterally in conjunction with the rotation of the mounting screw 45. This improves the ease of fixing the mounting piece 42 to the outdoor side wall portion 111.

[0039] The height adjustment screw 43 fixes the mounting piece 42 to the base 41 so that the height can be adjusted. Specifically, a pair of holding claws 41b, 41b for holding the head 43a of the height adjustment screw 43 is provided on the surface of the base 41 between the pair of support plate parts 41a, 41a. The holding claws 41b, 41b rotatably hold the head 43a of the height adjustment screw 43. The height adjustment screw 43 fixes the mounting piece 42 to the base 41 by screwing into the mounting piece 42 on the indoor side of the pair of clamping pieces 42a, 42a with the head 43a rotatably held by the holding claws 41b, 41b. This fixes the outdoor end of the upper frame base material 130 to the existing upper frame 110.

[0040] Between the holding claws 41b, 41b, an operation hole 41c having a diameter smaller than the outer diameter of the head 43a of the height adjustment screw 43 is formed. The upper surface (the surface having the driver groove) of the head 43a of the height adjustment screw 43 faces the operation hole 41c. Also, as shown in Figs. 9 to 11, the base material body 131 of the upper frame base material 130 has a hole portion 137 between adjacent elongated holes 136, which is larger than the operation hole 41c. The operation hole 41c is disposed in the hole portion 137 of the base material body 131. Therefore, the head 43a of the height adjustment screw 43 facing the operation hole 41c can be rotated by a screwdriver or the like through the hole portion 137 from the lower side of the base material body 131.

[0041] Since the mounting piece 42 that screws into the height adjustment screw 43 cannot rotate as it is sandwiched between the pair of support plate parts 41a, 41a, when the height adjustment screw 43 rotates, the mounting piece 42, while sandwiched between the support plate parts 41a, 41a, moves up and down along the axial direction of the height adjustment screw 43. This makes it possible to adjust the outdoor height of the upper frame base material 130, and allows the levelness of the upper frame base material 130 to be easily fine-tuned.

[0042] Next, the indoor side of the upper frame base material 130 is fixed to the frame member 3 by a mounting screw 134 that penetrates the base material main body 131 and the angle portion 112 of the existing upper frame 110. Of the multiple protruding legs 133a to 133d erected on the base material main body 131, a pair of protruding legs 133a, 133b arranged on the indoor side face the surface of the angle portion 112, which is the mounting target surface, and the inner peripheral surface 3a of the frame member 3. The mounting screw 134 is arranged between the pair of protruding legs 133a, 133b, and is screwed into the frame member 3 by penetrating the base material main body 131.

[0043] Here, as shown in Fig. 13, the indoor end of the upper frame base material 130 is attached by the attachment screw 134 with a gap D between the surface of the angle portion 112, which is the attachment target surface, and the inner peripheral surface 3a of the frame member 3. That is, when the upper frame base material 130 is screwed to the attachment screw 134, a gap D is formed between the tip of the protruding leg portion 133a, 133b of the upper frame base material 130 and the surface of the angle portion 112 and the inner peripheral surface 3a of the frame member 3. This gap D is formed by setting the protruding height of the protruding leg portion 133a, 133b to the height D1-D2, when the designed distance between the base material main body 131 of the upper frame base material 130 and the surface of the angle portion 112 and the inner peripheral surface 3a of the frame member 3 is D1, and the thickness of the water stop tape 150 described later is D2.

[0044] As a result, even if the mounting screw 134 is screwed in with the waterproof tape 150 placed between the upper frame base material 130 and the angle portion 112 and frame member 3, there is no risk of the indoor end of the upper frame base material 130 protruding inward (lower side in Figures 4 and 13) and tilting, and it is possible to form the mounting surface for the newly installed upper frame 120 in the appropriate position.

[0045] The upper frame base material 130 is attached to the inner periphery of the existing upper frame 110 with a predetermined space S1 between the base material body 131 and the inner periphery 3a of the frame member 3 as shown in Fig. 4 by arranging the protruding legs 133a and 133b facing the frame member 3. In this embodiment, the space S1 is set so that the distance between the base material body 131 of the upper frame base material 130 and the inner periphery 3a of the frame member 3 is the same as or slightly larger than the protruding height (about 5 mm) of the protruding piece 113 of the existing upper frame 110. As a result, the protruding piece 113 of the existing upper frame 110 is completely accommodated in the space S1, so it does not interfere with the upper frame base material 130.

[0046] a5.Watertight structure of the upper frame As shown in Fig. 4, a waterproof tape 150, which is a sealing material, is interposed between the two protruding legs 133a, 133b on the indoor side of the upper frame base material 130 and the surface of the angle part 112 of the existing upper frame 110 and the inner peripheral surface 3a of the frame member 3. The waterproof tape 150 covers the protruding piece 113 of the existing upper frame 110 and is attached over the vicinity of the trim material 125 of the newly constructed upper frame 120. The mounting screw 134 that fixes the indoor side of the upper frame base material 130 passes through this waterproof tape 150. As a result, the outer peripheral surface of the mounting screw 134 is waterproofed.

[0047] In addition, a waterproof tape 151 is attached across the indoor side surface 120a of the new upper frame 120 and the indoor side surface 130a of the upper frame base material 130. The waterproof tape 151 extends from the indoor side surface 130a of the upper frame base material 130 so as to overlap the portion of the waterproof tape 150 attached to the inner peripheral surface 3a of the frame member 3. In this embodiment, the indoor side surface 130a of the upper frame base material 130 and the indoor side surface 120a of the new upper frame 120 are arranged on the same plane. This allows the waterproof tape 151 to be attached flatly, so that the attachment workability is good and the attachment state is also good, thereby improving the waterproof function. In this embodiment, the indoor side surface 140a of the spacer member 140 is also arranged on the same plane as the indoor sides 120a and 130a, but the position of the indoor side surface 140a of the spacer member 140 is not particularly limited.

[0048] 4 and 10, a plurality of water-stopping materials 160-162 made of foam rubber or the like are interposed between the existing upper frame 110 and the new upper frame 120. These water-stopping materials 160-162 extend longitudinally along the length of the new upper frame 120.

[0049] The waterproof material 160 is sandwiched between the outdoor side wall portion 111 of the existing upper frame 110 and the outdoor side wall portion 122 of the new upper frame 120, and is in contact with the upper end portion 132a of the outdoor side wall portion 132 of the upper frame base material 130. Further, the waterproof material 161 is sandwiched between the outdoor side wall portion 122 of the new upper frame 120 and the outdoor side wall portion 132 of the upper frame base material 130. Furthermore, the waterproof material 162 is disposed on the indoor side of the long hole 136 and the hole portion 137 formed in the base material main body 131 and on the outdoor side of the mounting screw 126b, and is sandwiched between the new upper frame 120 and the base material main body 131.

[0050] <B. Lower Frame> Next, the lower frame 200 will be described. As shown in FIGS. 2 and 5, the lower frame 200 includes an existing lower frame 210, a new lower frame 220, and a lower frame base material 230.

[0051] b1. Existing lower frame The existing lower frame 210 is attached to the outdoor side of the lower side portion of the opening 2 of the building. The existing lower frame 210 has a standing wall portion 211 that stands upright from the prospective wall portion 210a toward the new lower frame 220 disposed above. The standing wall portion 211 is continuously arranged along the length direction of the existing lower frame 210. The prospective wall portion 210a is slightly inclined downward toward the outdoor side, and the standing wall portion 211 is disposed at the outdoor side end of the prospective wall portion 210a. The standing wall portion 211 shown in the present embodiment is provided so as to protrude to the same height as the inner peripheral surface 3a of the frame member 3, but is not limited thereto.

[0052] The existing lower frame 210 has a protruding portion 212 that protrudes from the lower part of the standing wall portion 211 toward the outdoor side and is slightly inclined downward on the outdoor side of the standing wall portion 211. The protruding portion 212 protrudes toward the outdoor side from the standing wall portion 211 at a position below the connection portion 210b between the standing wall portion 211 and the prospective wall portion 210a. The outdoor side end of the protruding portion 212 has an outdoor side wall portion 213 that extends downward. Further, the existing lower frame 210 integrally has an angle portion 214 that extends so as to protrude toward the indoor side at the indoor side end. The angle portion 214 is fixed to the outdoor side end of the inner peripheral surface 3a of the frame member 3.

[0053] b2. New lower frame The new lower frame 220 is attached to the inner periphery of the existing lower frame 210, with a lower frame base material 230 sandwiched therebetween. The new lower frame 220 is mainly made of a metal frame body, and has an outdoor side wall portion 221 extending downward at its outdoor end. The outdoor side wall portion 221 extends approximately parallel to the outdoor side wall portion 213 of the existing lower frame 210, and is positioned so as to cover and conceal the entire outdoor side wall portion 213.

[0054] The new sill 220 has a resin angle member 222 at its indoor end that extends toward the indoor side. The angle member 222 is formed integrally with the groove 11 in which the screen door 30 is placed, and is disposed at a distance from the inner peripheral surface 3a of the frame member 3. A resin angle cover 223 is attached between the angle member 222 and the inner peripheral surface 3a of the frame member 3. The boundary between the angle cover 223 and the inner peripheral surface 3a of the frame member 3 is shielded by an L-shaped resin parting material 224. The parting material 224 is fixed to the inner peripheral surface 3a of the frame member 3 by mounting screws 224a.

[0055] The new lower frame 220 is fixed by a mounting screw 225 that penetrates the lower frame base material 230. This mounting screw 225 penetrates the lower frame base material 230 but does not penetrate the existing lower frame 210. The mounting screw 225 is positioned on the indoor side of the vertical wall portion 211 of the existing lower frame 210.

[0056] b3. Lower frame base material The lower frame base material 230 is disposed between the existing lower frame 210 and the new lower frame 220. As shown in Fig. 8, a plurality of the lower frame base materials 230 are provided at intervals along the longitudinal direction of the existing lower frame 210.

[0057] Details of the lower frame base material 230 are shown in Fig. 14. Fig. 14 is a perspective view of the lower frame base material 230. The lower frame base material 230 is made of metal, and integrally includes a base material main body 231, an outdoor side wall portion 232, a protruding step portion 233, a connecting portion 234, and a plurality of protruding legs 235a to 235c.

[0058] The base material body 231 is made of a plate-like member that is sufficiently short in length relative to the extension direction of the lower frame 200, and covers the inner periphery side of the existing lower frame 210 in the indoor / outdoor direction to form a substantially flat mounting surface for the new lower frame 220. The indoor end of the base material body 231 is disposed on the inner periphery surface 3a of the frame member 3 so as to cover the angle portion 214 of the existing lower frame 210. In this embodiment, the surface of the angle portion 214 of the existing lower frame 210 and the inner periphery surface 3a of the frame member 3 are the mounting target surfaces for the indoor end of the lower frame base material 230.

[0059] The outdoor side wall portion 232 extends downward from the outdoor end portion of the base material main body 231. The outdoor side wall portion 232 extends approximately parallel to the outdoor side wall portion 213 of the existing lower frame 210, and is disposed between the outdoor side wall portion 221 of the new lower frame 220 and the outdoor side wall portion 213 of the existing lower frame 210, with a length approximately the same as that of the outdoor side wall portion 221 of the new lower frame 220.

[0060] The protruding step portion 233 is positioned at the connection portion between the base material main body 231 and the outdoor side wall portion 232, and is integrally formed from the base material main body 231 to the outdoor side wall portion 232 so as to partially bend and protrude toward the outdoor side beyond the outdoor side wall portion 232.

[0061] As shown in Fig. 5, the outdoor side wall 221 of the new lower frame 220 abuts against the protruding step 233 from the outdoor side. For this reason, the outdoor side wall 221 of the new lower frame 220 is located on the outdoor side further than the outdoor side wall 232 of the lower frame base material 230 by the protruding amount of the protruding step 233. This protruding amount of the protruding step 233 to the outdoor side corresponds to the amount by which the outdoor side wall 122 of the new upper frame 120 is positioned to protrude to the outdoor side due to the presence of the ribs 122b, 122c provided on the outdoor side wall 122 of the new upper frame 120, the outdoor side wall 132 of the upper frame base material 130, and the clamping piece 42a of the mounting piece 42 of the mounting member 40, as shown in Fig. 4. Therefore, by abutting the outdoor side wall portion 221 of the new lower frame 220 against the protruding step portion 233, the outdoor side wall portion 122 of the new upper frame 120 and the outdoor side wall portion 221 of the new lower frame 220 can be aligned on the same plane.

[0062] The outdoor side wall 221 of the new sill 220 is aligned to be flush with the first outdoor side wall 321a, 421a of the new vertical frames 320, 420 described below. This makes the visible surface of the remodeled sash 1 (the surfaces of the outdoor side wall 122, 221, 321a, 421a) flush all around, improving the appearance of the remodeled sash 1 from the outdoor side.

[0063] The connecting portion 234 is a part that connects the outdoor upper surface portion 231A, which is located on the outdoor side of the base material main body 231, and the indoor upper surface portion 231B, which is located on the indoor side, and is provided along the longitudinal direction of the base material main body 231 at a position on the indoor side of the mounting screws 225 of the newly installed lower frame 220.

[0064] The outdoor upper surface portion 231A and the indoor upper surface portion 231B form the upper surface of the lower frame base material 230. The outdoor upper surface portion 231A and the indoor upper surface portion 231B have different heights toward the upper frame 100 side, with the connecting portion 234 as the boundary. That is, the indoor upper surface portion 231B of the base material main body 231 is higher toward the upper frame 100 side than the outdoor upper surface portion 231A, with the connecting portion 234 as the boundary, and the upper surface of the lower frame base material 230 has a stepped shape at the connecting portion 234. Therefore, even if rainwater seeps in between the newly installed lower frame 220 and the lower frame base material 230 from the outdoor side, it will not seep in through the connecting portion 234 to the indoor side. Therefore, according to this lower frame base material 230, infiltrating rainwater can be blocked within the outdoor-side upper surface portion 231A of the base material main body 231, and infiltration of rainwater into the indoor-side upper surface portion 231B can be prevented.

[0065] In this embodiment, the connecting portion 234 is configured as an inclined surface that slopes downward from the indoor-side upper surface portion 231B toward the outdoor-side upper surface portion 231A, but the connecting portion 234 is not limited to an inclined surface and may be a substantially vertical wall surface.

[0066] The protruding legs 235a to 235c are provided on the back surface (surface on the existing lower frame 210 side) of the indoor side upper surface portion 231B of the base material main body 231 to protrude toward the existing lower frame 210 and extend parallel to the longitudinal direction of the base material main body 231. As shown in Fig. 5, the protruding legs 235a to 235c are disposed opposite the surface of the angle portion 214 of the existing lower frame 210, which is the mounting target surface, and the inner peripheral surface 3a of the frame member 3, and protrude toward this mounting target surface.

[0067] The protruding leg 235a closest to the indoor side is disposed at the indoor end of the base material main body 231. The indoor side surface of this protruding leg 235a forms the indoor side surface 230a of the lower frame base material 230. As shown in Fig. 5, this indoor side surface 230a is disposed on the same plane as the indoor side surface 220a of the newly-installed lower frame 220 excluding the angle cover 223. The angle cover 223 is attached across the indoor side surface 230a of the lower frame base material 230 and the indoor side surface 220a of the newly-installed lower frame 220 so as to cover these indoor side surfaces 220a, 230a.

[0068] b4. Mounting structure of the lower frame base material 2 and 5, the outdoor side of the lower frame base material 230 is placed on the protruding portion 212 of the existing lower frame 210 via a height adjustment mechanism 50. Details of this height adjustment mechanism 50 will be further described with reference to Figures 14 and 15. Figure 14 is a cross-sectional view of the height adjustment mechanism 50 as seen from the front, and Figure 15 is a cross-sectional view of the height adjustment mechanism 50 as seen from the side.

[0069] The height adjustment mechanism 50 comprises a base 51 attached to the back surface of the base material main body 231, a height adjustment screw 52 consisting of a flat head screw rotatably held on the base 51, and a support leg 53 screwed into the height adjustment screw 52.

[0070] The base 51 has a contact portion 51a that contacts the back surface of the base material main body 231, and a pair of side walls 51b, 51b that hang down from both ends of the contact portion 51a on the indoor side and the outdoor side. The contact portion 51a and the side walls 51b, 51b extend along the length direction of the lower frame base material 230.

[0071] The height adjustment screw 52 is housed between the side wall portions 51b, 51b. Specifically, holding steps 51c, 51c are formed on the inner surfaces of the side wall portions 51b, 51b, respectively, which are aligned with the cross-sectional shape of the head 52a of the height adjustment screw 52. The head 52a of the height adjustment screw 52 is inserted between the abutment portion 51a and the pair of holding steps 51c, 51c from the side of the base portion 51, and is thereby rotatably held between the abutment portion 51a and the holding steps 51c, 51c.

[0072] As shown in Fig. 13, two elongated holes 237 for inserting screws that extend along the indoor / outdoor direction are formed in the base material body 231 of the lower frame base material 230. As shown in Fig. 14, the base 51 is fixed to the base material body 231 by two mounting screws 54 that pass through each of the elongated holes 237. Because the elongated holes 237 are long in the indoor / outdoor direction, the fixed position of the base 51 in the indoor / outdoor direction can be fine-tuned.

[0073] The abutting portion 51a is formed with a through hole 51d having a diameter smaller than the outer diameter of the head 52a of the height adjustment screw 52. The upper surface (the surface having the driver groove) of the head 52a of the height adjustment screw 52 faces the inside of the through hole 51d. Also, as shown in Figs. 13 to 15, the base material main body 231 of the lower frame base material 230 has an elongated hole 238 formed similarly to the elongated hole 237 between adjacent elongated holes 237. The through hole 51d is arranged to face the inside of this elongated hole 238.

[0074] The support leg 53 has a screw portion 53a that screws into the height adjustment screw 52, ​​and a pair of L-shaped legs 53b, 53b that extend downward from the screw portion 53a with the height adjustment screw 52 in between. The legs 53b, 53b are placed on the protruding portion 212 of the existing lower frame 210. The thickness of the support leg 53 in the indoor / outdoor direction is approximately the same as the distance between the pair of side walls 51b, 52b of the base 51. Therefore, as shown in FIG. 15, the support leg 53 with the screw portion 53a screwed into the height adjustment screw 52 is in surface contact with the pair of side walls 51b, 51b and is supported from the indoor / outdoor direction.

[0075] Height adjustment by the height adjustment mechanism 50 is performed by rotating the head 52a of the height adjustment screw 52 facing the through hole 51d with a screwdriver or the like through the long hole 238 from the upper side of the lower frame base material 230. Since the support leg 53 is sandwiched between the pair of side walls 51b, 51b and cannot rotate, when the head 52a of the height adjustment screw 52 is rotated, the support leg 53 moves vertically between the side walls 51b, 51b along the axial direction of the height adjustment screw 52. This adjusts the outdoor side height of the lower frame base material 230, making it easy to fine-tune the level of the lower frame base material 230.

[0076] At this time, the support legs 53 of the height adjustment mechanism 50 come into contact with the downwardly sloping overhang 212, but there is no risk of tilting because they are supported by the pair of side walls 51b, 51b. Therefore, the height adjustment mechanism 50 can stably support the outdoor side of the lower frame base material 230 so as to adjust the height.

[0077] In addition, the pair of legs 53b, 53b of the support leg 53 are formed in an L shape and have a shape that protrudes to the left and right along the length direction of the lower frame base material 230 (the left and right direction in FIG. 14), so that a large contact area with the protruding portion 212 of the existing lower frame 210 can be secured. Therefore, the height adjustment mechanism 50 can stably receive the load applied to the lower frame base material 230.

[0078] Next, the indoor side of the lower frame base material 230 is fixed to the frame member 3 by a mounting screw 236 that penetrates the base material main body 231. These protruding legs 235a to 235c face the inner peripheral surface 3a of the frame member 3. The mounting screw 236 is disposed between a pair of the protruding legs 235b, 235c, and is screwed into the frame member 3 after penetrating the base material main body 231.

[0079] Next, the indoor side of the upper frame base material 130 is fixed to the frame member 3 by a mounting screw 134 that penetrates the base material main body 131 and the angle portion 112 of the existing upper frame 110. Of the multiple protruding legs 133a to 133d erected on the base material main body 131, a pair of protruding legs 133a, 133b arranged on the indoor side face the surface of the angle portion 112, which is the mounting target surface, and the inner peripheral surface 3a of the frame member 3. The mounting screw 134 is arranged between the pair of protruding legs 133a, 133b, and is screwed into the frame member 3 by penetrating the base material main body 131.

[0080] Here, as shown in Fig. 15, the indoor end of the lower frame base material 230 is attached by the attachment screw 236 with a gap D between the surface of the angle portion 214, which is the attachment target surface, and the inner peripheral surface 3a of the frame member 3. That is, when the lower frame base material 230 is screwed to the attachment screw 236, a gap D is formed between the tip of the protruding leg portion 235a, 235b, 235c of the lower frame base material 230 and the surface of the angle portion 214 and the inner peripheral surface 3a of the frame member 3. This gap D is formed by setting the protruding height of the protruding leg portion 235a, 235b, 235c to the height D1-D2, when the designed distance between the base material body 231 of the lower frame base material 230 and the surface of the angle portion 214 and the inner peripheral surface 3a of the frame member 3 is D1, and the thickness of the water stop tape 240 described later is D2.

[0081] As a result, even if the mounting screw 236 is screwed in with the waterproof tape 240 placed between the lower frame base material 230 and the angle portion 214 and frame member 3, there is no risk of the indoor end of the lower frame base material 230 protruding inward (upper side in Figures 5 and 15) and tilting, and it is possible to form the mounting surface for the newly installed lower frame 220 in the appropriate position.

[0082] b5.Watertight structure of the lower frame As shown in Fig. 5, a waterproof tape 240, which is a sealing material, is interposed between the protruding legs 235a-235c of the lower frame base material 230 and the inner peripheral surface 3a of the frame member 3 (the surface of the angle portion 214 of the existing lower frame 210). The waterproof tape 240 is attached between the protruding legs 235a-235c and the inner peripheral surface 3a of the frame member 3, over the vicinity of the trim material 224 of the newly installed lower frame 220. The mounting screws 236 that secure the indoor side of the lower frame base material 230 penetrate this waterproof tape 240. Therefore, the outer peripheral surface of the mounting screws 236 is waterproofed.

[0083] In addition, a waterstop tape 241 is adhered across the indoor side surface 220a of the newly installed lower frame 220 and the indoor side surface 230a of the lower frame base material 230. The waterstop tape 241 extends from the indoor side surface 230a of the lower frame base material 230 across the portion adhered to the inner peripheral surface 3a of the frame member 3 of the waterstop tape 240. In the present embodiment, the indoor side surface 230a of the lower frame base material 230 and the indoor side surface 220a of the newly installed lower frame 220 are arranged on the same plane. Thereby, since the waterstop tape 241 can be adhered flatly, the adhesion workability is good, the adhesion state is also good, and the waterstop function can be improved.

[0084] <C. Vertical Frame> Next, the vertical frames 300 and 400 will be described. As shown in FIGS. 3, 6, and 7, the vertical frames 300 and 400 are configured to include existing vertical frames 310 and 410, newly installed vertical frames 320 and 420, and vertical frame base materials 330 and 430.

[0085] c1. Existing vertical frame The existing vertical frames 310 and 410 are respectively attached to the left and right vertical side portions on the outdoor side of the opening 2 of the building. The existing vertical frames 310 and 410 have outdoor side wall portions 311 and 411 extending outwardly to the left and right at the outdoor side ends, and integrally have angle portions 312 and 412 extending so as to project inwardly at the indoor side ends. The angle portions 312 and 412 are fixed to the outdoor side ends of the inner peripheral surface 3a of the frame member 3.

[0086] The inner peripheral surfaces 310a and 410a of the existing vertical frames 310 and 410 are arranged flush with the inner peripheral surfaces 3a of the left and right frame members 3, respectively.

[0087] The existing vertical frames 310 and 410 have a plurality (three in the present embodiment) of protruding pieces 313 and 413 protruding from the inner peripheral surfaces 310a and 410a toward the inside of the opening 2 (the central side in FIG. 3, the right side in FIG. 6, and the left side in FIG. 7). The protruding pieces 313 and 413 extend in parallel along the length direction of the existing vertical frames 310 and 410.

[0088] The protruding pieces 313, 413 are remnants of the existing protruding pieces 313a, 413a (shown by dashed lines in Figs. 6 and 7) such as fins and ribs that were originally provided on the existing vertical frames 310, 410 before they were remodeled into the remodeled sash 1, and are made up of the base portions of the existing protruding pieces 313a, 413a that were left uncut when the existing protruding pieces 313a, 413a (shown by dashed lines in Figs. 6 and 7) were cut off. The protruding pieces 313, 413 are approximately the same height, and protrude further toward the inside of the opening 2 than the inner circumferential surface 3a of the frame member 3. In this embodiment, the protruding pieces 313, 413 protrude about 5 mm from the inner circumferential surface 3a of the frame member 3.

[0089] c2. New vertical frame The new vertical frames 320, 420 are attached to the inner periphery of the existing vertical frames 310, 410, with the vertical frame base materials 330, 430 sandwiched therebetween. The new vertical frames 320, 420 are mainly made of a metal frame body, and have first outdoor side walls 321a, 421a extending outwardly to the left and right integrally with the outdoor end, and further have second outdoor side walls 321b, 421b extending indoors integrally with the end of the first outdoor side wall 321a, 421a.

[0090] The first outdoor side wall portions 321a, 421a extend approximately parallel to the outdoor side wall portions 311, 411 of the existing vertical frames 310, 410, and are disposed so as to cover and conceal the entire outdoor side wall portions 311, 411. The second outdoor side wall portions 321b, 421b are disposed so as to cover and conceal the outdoor side wall portions 311, 411 of the existing vertical frames 310, 410 from the outside left and right sides.

[0091] The new vertical frames 320, 420 have resin angle members 322, 422 at the indoor end that extend toward the indoor side. The angle members 322, 422 are formed integrally with the groove portion 11 in which the screen door 30 is placed, and are arranged at a distance from the inner peripheral surface 3a of the frame member 3. A resin angle cover 323, 423 is attached between the angle member 322, 422 and the inner peripheral surface 3a of the frame member 3. The boundary between the angle cover 323, 423 and the inner peripheral surface 3a of the frame member 3 is shielded by a resin L-shaped parting material 324, 424. The parting material 324, 424 is fixed to the inner peripheral surface 3a of the frame member 3 by mounting screws 324a, 424a.

[0092] The new vertical frames 320, 420 are fixed to the vertical frame base materials 330, 430 by mounting screws 326a, 326b, 426a, 426b via spacer members 325, 425. The mounting screws 326a, 426a penetrate the center of the vertical frame base materials 330, 430 and are screwed into the existing vertical frames 310, 410. The mounting screws 326b, 426b also penetrate from the bottom of the groove portion 11 to the vicinity of the indoor end of the vertical frame base materials 330, 430.

[0093] c3. Vertical frame base material The vertical frame base materials 330, 430 are disposed between the existing vertical frames 310, 410 and the new vertical frames 320, 420. As shown in Fig. 8, a plurality of the vertical frame base materials 330, 430 are provided at intervals along the longitudinal direction of the existing vertical frames 310, 410. The vertical frame base material 330 and the vertical frame base material 430 have the same configuration.

[0094] Details of the vertical frame base materials 330, 430 are shown in Fig. 16. Fig. 16 is a perspective view of the back side of the vertical frame base materials 330, 430 viewed from the outdoor side. The vertical frame base materials 330, 430 are made of metal, and integrally include a base material main body 331, 431, outdoor side wall portions 332, 432, and protruding leg portions 333, 433.

[0095] The base material main body 331, 431 consists of a plate-like member that is sufficiently short compared to the longitudinal length of the existing vertical frames 310, 410, and by covering the inner periphery of the existing vertical frames 310, 410 in the indoor / outdoor directions, forms a substantially flat mounting surface for the new vertical frames 320, 420.

[0096] As shown in Fig. 8, a plurality of vertical frame base materials 330, 430 are provided at intervals along the length direction of the existing vertical frames 310, 410. The indoor end of the base material main body 331, 431 is disposed on the inner peripheral surface 3a of the frame member 3 so as to cover the angle parts 312, 412 of the existing vertical frames 310, 410. In this embodiment, the surfaces of the angle parts 312, 412 of the existing vertical frames 310, 410 and the inner peripheral surface 3a of the frame member 3 are used as the mounting surfaces for the indoor end of the vertical frame base materials 330, 430.

[0097] 6 and 7, the outdoor side wall portions 332, 432 extend outward from the outdoor end portions of the base material main bodies 331, 431. The outdoor side wall portions 332, 432 extend approximately parallel to the outdoor side wall portions 311, 411 of the existing vertical frames 310, 410, and are disposed in contact with the outdoor side wall portions 311, 411 between the first outdoor side wall portions 321a, 421a of the new vertical frames 320, 420 and the outdoor side wall portions 311, 411 of the existing vertical frames 310, 410.

[0098] The protruding legs 333, 433 are integrally formed at the indoor end of the base material main body 331, 431. As shown in Fig. 6 and Fig. 7, the protruding legs 333, 433 cover the angle parts 312, 412 and are disposed facing the inner peripheral surface 3a of the frame member 3, and protrude from the back surface of the base material main body 331, 431 (the surface on the side of the existing vertical frames 310, 410) toward the inner peripheral surface 3a of the frame member 3.

[0099] The protruding legs 333, 433 are disposed at the end of the vertical frame base material 330, 430 closest to the indoor side. The indoor side of the protruding legs 333, 433 forms the indoor side 330a, 430a of the vertical frame base material 330, 430. As shown in Figs. 6 and 7, the indoor side 330a, 430a is disposed on the same plane as the indoor side 320a, 420a of the newly installed vertical frame 320, 420, excluding the angle cover 323, 423. The angle cover 323, 423 is attached so as to cover the indoor side 320a, 330a, 420a, 430a across the indoor side 330a, 430a of the vertical frame base material 330, 430 and the indoor side 320a, 420a of the newly installed vertical frame 320, 420.

[0100] c4. Vertical frame base material mounting structure The vertical frame base materials 330, 430 are attached to the existing vertical frames 310, 410 by a pair of attachment stays 334, 434 on the back surface of the base material main body 331. Each attachment stay 334, 434 is formed in a strip shape extending along the length direction of the vertical frame base materials 330, 430, and is attached by attachment screws 337, 437 to long holes 335, 435, 336, 436 long in the indoor / outdoor direction formed in the base material main body 331, 431. Since the attachment stays 334, 434 are attached using the long holes 335, 435, 336, 436, the attachment positions of the attachment stays 334, 434 in the indoor / outdoor direction can be fine-tuned.

[0101] Each mounting stay 334, 434 has a bent portion 334b, 434b that is bent toward the existing vertical frame 310, 410 side at both ends from the fixed portion with the mounting screw 337, 437. As a result, both ends 334a, 434a of the mounting stay 334, 434 protrude toward the existing vertical frame 310, 410 side from the base material main body 331, 431. The mounting stays 334, 434 are fixed at both ends 334a, 434a to the inner peripheral surface 310a, 410a of the existing vertical frame 310, 410 by the mounting screw 338, 438, respectively, avoiding the protruding piece 313, 413. As a result, the vertical frame base material 330, 430 is attached to the inner peripheral side of the existing vertical frame 310, 410.

[0102] Here, the mounting structure of the indoor ends of the vertical frame base members 330, 430 is shown in Figure 19. Figure 19 shows one vertical frame base member 330, but since the other vertical frame base member 430 has the same configuration, the other vertical frame base member 430 will be given a reference number in parentheses in the explanation referring to Figure 19. The indoor end of the vertical frame base material 330, 430 is attached with a gap D between it and the inner peripheral surface 3a of the frame member 3, which is the mounting target surface. That is, when the vertical frame base material 330 (430) is attached by the mounting stays 334, 434, a gap D is formed between the tip of the protruding leg 333 (433) of the vertical frame base material 330 (430) and the inner peripheral surface 3a of the frame member 3. This gap D is formed by setting the protruding height of the protruding leg 333 (433) to the height D1-D2, where D1 is the designed distance between the base material main body 331 (431) of the vertical frame base material 330 (430) and the inner peripheral surface 3a of the frame member 3, and D2 is the thickness of the waterproof tape 340 (440) described later.

[0103] As a result, even if the vertical frame base materials 330, 430 are installed with the waterproof tape 340, 440 placed between the vertical frame base materials 330, 430 and the frame member 3, there is no risk of the indoor side ends of the vertical frame base materials 330, 430 protruding inward (right side in Figures 6 and 19, left side in Figure 7) and tilting, and it is possible to form the mounting surface for the newly installed vertical frames 320, 420 in the appropriate position.

[0104] c5.Water-stopping structure of vertical frame 6 and 7, waterproof tapes 340, 440 serving as a sealing material are interposed between the protruding legs 333, 433 of the vertical frame base materials 330, 430 and the inner peripheral surface 3a of the frame member 3 (surfaces of the angle parts 312, 412 of the existing vertical frames 310, 410). The waterproof tapes 340, 440 are attached from the protruding pieces 313, 413 of the existing vertical frames 310, 410 to the vicinity of the parting materials 324, 424.

[0105] In addition, the waterproof tape 341, 441 is attached to the indoor side surface 320a, 420a of the new vertical frame 320, 420 and the indoor side surface 330a, 430a of the vertical frame base material 330, 430. The waterproof tape 341, 441 extends from the indoor side surface 330a, 430a of the vertical frame base material 330, 430 to the portion where the waterproof tape 340, 440 is attached to the inner peripheral surface 3a of the frame member 3. In this embodiment, the indoor side surface 330a, 430a of the vertical frame base material 330, 430 and the indoor side surface 320a, 420a of the new vertical frame 320, 420 are arranged on the same plane. As a result, the waterproof tape 341, 441 can be attached in a flat manner, which improves the attachment workability and the attachment state, thereby improving the waterproof function. In this embodiment, the indoor sides 325a, 425a of the spacer members 325, 425 are also disposed on the same plane as the indoor sides 320a, 420a, 330a, 430a, but the positions of the indoor sides 325a, 425a of the spacer members 325, 425 are not particularly limited.

[0106] Furthermore, water-stopping materials 350, 450 made of foamed rubber or the like are interposed between the existing vertical frames 310, 410 and the new vertical frames 320, 420. The water-stopping materials 350, 450 are sandwiched between the outdoor side wall portions 311, 411 of the existing vertical frames 310, 410 and the first outdoor side wall portions 321a, 421a of the new vertical frames 320, 420, and extend longitudinally along the length of the new vertical frames 320, 420.

[0107] The window frame 10 having the above configuration is framed in a rectangle by the upper frame 100, the lower frame 200, and the left and right vertical frames 300, 400. As a result, the new frames of the remodeled sash 1 (the new upper frame 120, the new lower frame 220, and the new vertical frames 320, 420) are attached via the respective base materials 130, 230, 330, 430 so as to cover the inner periphery of the existing frames (the existing upper frame 110, the existing lower frame 210, and the existing vertical frames 310, 410). [Explanation of symbols]

[0108] 1 Renovated sash, 2 Opening, 3 Frame member, 3a Inner surface, 110 Existing upper frame (existing frame), 120 New vertical frame (new frame), 130 Upper frame base material, 210 Existing lower frame (existing frame), 220 New lower frame (new frame), 230 Lower frame base material, 310, 410 Existing vertical frame (existing frame), 320, 420 New vertical frame (new frame), 330, 430 Vertical frame base material, 112, 214, 312, 412 Angle portion, 133a, 133b, 235b, 235c, 333, 433 Protruding leg portion, 150, 240, 340, 440 Water stop tape (sealing material), D Gap

Claims

1. A remodeled sash comprising a new frame attached to an inner periphery of an existing frame remaining in an opening of a building, and a base material disposed between the existing frame and the new frame, The new frame has a hollow portion, and holes for passing screws are provided in an outer peripheral side wall portion and an inner peripheral side wall portion constituting the hollow portion, The hollow portion of the newly installed frame is arranged in a plurality of indoor and outdoor directions, A retrofitted sash, in which the hole for passing the screw is positioned in the hollow portion on the outdoor side.

2. The remodeled sash according to claim 1 , wherein a tapping hole is provided in the hollow portion of the newly constructed frame.

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