JP7123577B2 - refurbished sash - Google Patents

Description

The present invention relates to a remodeling sash for remodeling an existing window installed in a building with a new window.

Conventionally, the cover construction method has been adopted as a method of refurbishing existing windows. In a refurbished sash refurbished by this cover construction method, a new frame is attached to an existing frame attached to an opening of a building so as to cover the inner peripheral side thereof (see Patent Document 1, for example).

Further, as a refurbished sash, there is also known a sash having a base material provided between the existing frame and the new frame, which serves as a mounting surface for the new frame (see, for example, Patent Document 2). The base material described in Patent Document 2 is fixed to a frame member arranged on the indoor side of the existing frame by means of mounting screws penetrating the base material.

JP 2016-94771 A JP-A-2002-285759

However, when the base material is screwed, there is a possibility that the base material will be distorted around the screwed portion due to the tightening torque being applied to the base material. Since the base material is a member that forms the mounting surface of the new frame, if the base material is distorted, it may affect the mounting of the new frame.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a modified sash in which a base material can be screwed to an existing frame without distortion.

(1) The modified sash according to the present invention is an existing frame (for example, an existing upper frame 110, an existing lower frame 210, and an existing vertical frame 310, 410) remaining in an opening of a building (for example, an opening 2 described later). ), a new frame attached so as to cover the inner peripheral side of the existing frame (for example, a new upper frame 120, a new lower frame 220, and new vertical frames 320 and 420 described later), the existing frame and the new frame A base member (for example, an upper base member 130 and a lower base member 230, which will be described later) that is arranged between and attached to the existing frame by passing mounting screws (for example, mounting screws 134 and 236, which will be described later). and a modified sash (for example, a modified sash 1 to be described later), wherein the base material is a pair of protruding legs (for example, protruding legs 133a, 133b, 235b) projected toward the existing frame , 235c), and is attached to the existing frame by passing the mounting screw between the pair of projecting legs.

(2) In the retrofitted sash according to (1), it is preferable that the pair of protruding legs extend along the length direction of the base member.

(3) In the modified sash described in (1) or (2), the existing frame has an angle portion (for example, angle portions 112 and 214 described later) on the indoor side, and the mounting screw is attached to the angle portion preferably screwed against.

ADVANTAGE OF THE INVENTION According to this invention, the modified sash which can screw a base material to the existing frame without generating distortion can be provided.

1 is a front view of a retrofit sash according to one embodiment of the present invention; FIG. FIG. 2 is a longitudinal sectional view of the modified sash shown in FIG. 1; Figure 2 is a cross-sectional view of the retrofit sash shown in Figure 1; It is a longitudinal cross-sectional view which expands and shows the principal part above the refurbishment sash shown in FIG. It is a longitudinal cross-sectional view which expands and shows the principal part below the refurbishment sash shown in FIG. FIG. 3 is a cross-sectional view showing an enlarged main part on the left side of the refurbished sash shown in FIG. 2 ; FIG. 3 is a cross-sectional view showing an enlarged main part on the right side of the refurbished sash shown in FIG. 2 ; It is a perspective view which shows a mode that the base material was attached to the inner peripheral side of the existing frame of the refurbishment sash. It is a perspective view of an upper base material. It is the partial perspective view which looked at the upper base material from the back surface side. It is the front view which looked at the attachment member from the indoor side. It is a longitudinal cross-sectional view of an attachment member. It is a perspective view of a lower base material. It is sectional drawing which looked at the height adjustment mechanism from the front. It is sectional drawing which looked at the height adjustment mechanism from the side. It is the perspective view which looked at the back side of the vertical side base material from the outdoor side.

An embodiment of the present invention will be described in detail below with reference to the drawings.
1 is a front view of a refurbished sash according to one embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the refurbished sash shown in FIG. 1, and FIG. 3 is a transverse section of the refurbished sash shown in FIG. It is a diagram. 4 is a longitudinal sectional view showing an enlarged main part of the upper side of the refurbished sash shown in FIG. 2, and FIG. 5 is a longitudinal sectional view showing an enlarged main part of the lower part of the refurbished sash shown in FIG. 6 is an enlarged transverse cross-sectional view showing the main part on the left side of the refurbished sash shown in FIG. 2, and FIG. 7 is a cross-sectional view showing the main part on the right side of the refurbished sash shown in FIG. It is a plan view. Moreover, FIG. 8 is a perspective view which shows a mode that the base material was attached to the inner peripheral side of the existing frame of the refurbished sash.

As shown in FIG. 1, a refurbished sash 1 according to the present invention is mounted on the outdoor side of an opening 2 of a building, and is formed into a rectangular frame by an upper frame 100, a lower frame 200, and a pair of left and right vertical frames 300, 400. a window frame 10, a shoji 20 housed in the window frame 10 so as to be openable and closable, and a screen door 30 slidably housed in the window frame 10 on the indoor side of the shoji 20. - 特許庁A frame member 3 is provided around the inner circumference of the opening 2 . FIG. 1 shows a modified sash 1 as seen from the outside.

As shown in FIGS. 2 and 3, the shoji 20 shown in this embodiment is sandwiched between two pieces of glass 22, 22 on the indoor side and the outdoor side, and these glasses 22, 22 in a frame 21 extending around the four sides. and a sliding-out type shoji made of a plurality of glasses, and has excellent heat insulating properties. The shoji 20 is configured to be rotated by operating a lever 24 attached to the indoor side, opened toward the outdoor side, and closed toward the indoor side.

The screen door 30 is housed in grooves 11 provided on the four sides 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 the net portion 31 is stored in one vertical frame 300 side in a folded state. The screen door 30 is extended to the indoor side of the shoji 20 by sliding the vertical frame portion 32 attached to the end portion of the screen portion 31 toward the vertical frame 400 side, and the vertical frame portion 32 is directed to the vertical frame 300 side. It is configured to be folded by sliding towards. FIG. 3 shows a state in which the screen door 30 is folded toward the vertical frame 300, and a state in which the screen door 30 is extended is indicated by a dashed line.

Next, the window frame 10 will be explained.
<A. Upper frame>
First, the upper frame 100 will be explained. As shown in FIGS. 2 and 4, the upper frame 100 includes an existing upper frame 110, a new upper frame 120, and an upper base member .

a1. Existing Upper Frame The existing upper frame 110 is made of a metal frame and is attached to the outdoor side of the upper part of the opening 2 of the building. The existing upper frame 110 has an outdoor side wall portion 111 extending downward at the end on the outdoor side. As shown in FIG. 4, the outdoor side wall portion 111 is formed when the existing side wall portion 111a (shown by the broken line in FIG. is the root portion of the existing side wall portion 111a left uncut. A lower end portion of the outdoor side wall portion 111 is located above the position of the inner peripheral surface 3 a of the frame member 3 .

In addition, the existing upper frame 110 integrally has an angle portion 112 extending so as to protrude toward the indoor side at the end portion on the indoor side. The angle portion 112 is fixed to the outdoor end portion of the inner peripheral surface 3 a of the frame member 3 .

The existing upper frame 110 further has a projecting piece 113 . The protruding piece 113 protrudes from the outdoor end of the angle portion 112 toward the inside of the opening 2 (lower side in FIGS. 2 and 4). This protruding piece 113 was left uncut when the existing protruding piece 113a (indicated by the broken line in FIG. 4) originally provided on the existing vertical frames 310 and 410 before being refurbished to the refurbished sash 1 was cut. This is the remainder of the projecting piece, which is the root portion of the existing projecting piece 113a. The protruding piece 113 protrudes toward the inner side of the opening 2 from the inner peripheral surface 3 a of the frame member 3 . In this embodiment, the protruding piece 113 protrudes inward (downward) by about 5 mm from the inner peripheral surface 3 a of the frame member 3 .

a2. New Upper Frame The new upper frame 120 is attached to the inner peripheral side of the existing upper frame 110 with the upper base member 130 interposed therebetween. The newly installed upper frame 120 is mainly made of a metal frame body, and has an overhanging part 121 on the outdoor side, which overhangs the shoji 20 further to the outdoor side. The projecting portion 121 is slightly downwardly inclined toward the outdoor side, and has an outdoor side wall portion 122 that rises upward at the tip portion thereof. The outdoor side wall portion 122 extends substantially parallel to the outdoor side wall portion 111 of the existing upper frame 110 and is arranged to cover the entire outdoor side wall portion 111 from the outside.

The outdoor side wall portion 122 has a plurality of ribs 122a to 122c projecting toward the indoor side. The rib 122 a is arranged at the upper end of the outdoor side wall 122 . The ribs 122b and 122c are arranged below the rib 122a and protrude so as to come into contact with an outdoor side wall portion 132 of the upper frame base member 130, which will be described later. These ribs 122a-122c extend in parallel over the entire length of the new upper frame 120. As shown in FIG.

The newly installed upper frame 120 has an angle member 123 made of resin that extends so as to protrude toward the indoor side at the end on the indoor side. The angle member 123 is formed integrally with the groove portion 11 in which the screen door 30 is housed, and is spaced apart 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 3 a of the frame member 3 . A boundary between the angle cover 124 and the inner peripheral surface 3a of the frame member 3 is shielded by an L-shaped parting member 125 made of resin. The parting material 125 is fixed to the inner peripheral surface 3a of the frame member 3 by means of mounting screws 125a.

The newly installed upper frame 120 is fixed to the upper base member 130 via a spacer member 140 by a plurality of mounting screws 126a and 126b penetrating the upper base member 130. As shown in FIG. Mounting screws 126 a , 126 b extend from the new upper frame 120 through the upper frame base member 130 .

a3. Upper Base Material The upper base material 130 is arranged between the existing upper frame 110 and the new upper frame 120 . As shown in FIG. 8 , only one upper base member 130 is attached to the inner peripheral 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 total length of the newly installed upper frame 120 or longer than the total length of the newly installed upper frame 120 .

Details of the upper base member 130 are shown in FIG. FIG. 9 is a perspective view of the upper base member 130. FIG. The upper base member 130 is made of metal, and integrally has a base member main body 131, an outdoor side wall portion 132, and a plurality of projecting leg portions 133a to 133d.

The base material main body 131 is made of a long plate-like member that extends along the extension direction of the upper frame 100, and extends over substantially the entire length of the inner peripheral side of the existing upper frame 110 in the longitudinal direction and in the indoor and outdoor directions. The covering provides a substantially flat mounting surface for the new top frame 120 . The indoor-side end of the base material main body 131 is arranged on the inner peripheral surface 3 a of the frame member 3 so as to cover the angle portion 112 of the existing upper frame 110 .

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 substantially parallel to the outdoor side wall portion 111 of the existing upper frame 110, and extends 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. It is arranged so as to cover substantially the lower half of the outdoor side wall portion 111 . The outdoor side wall portion 132 is arranged so as to abut on the ribs 122b and 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 arranged below the rib 122a. It is

The protruding legs 133a to 133d are arranged on the back surface of the base material body 131 (the surface on the side of the existing upper frame 110) toward the existing upper frame 110 in the length direction of the base material body 131 (extending direction of the upper frame 100). It protrudes so that it may extend parallel along. As shown in FIG. 4, a pair of indoor-side protruding legs 133a and 133b out of the protruding legs 133a to 133d are arranged to face the inner peripheral surface 3a of the frame member 3. As shown in FIG.

The protruding leg portion 133 a closest to the indoor side is arranged at the end portion of the base material main body 131 closest to the indoor side. The indoor side surface of the projecting leg portion 133 a forms the indoor side surface 130 a of the upper base member 130 . As shown in FIG. 4 , this indoor side surface 130 a is arranged on the same plane as the indoor side surface 120 a of the newly installed upper frame 120 except for the angle cover 124 . The angle cover 124 is mounted across the indoor side surface 130a of the upper base member 130 and the indoor side surface 120a of the new upper frame 120 so as to cover these indoor side surfaces 120a, 130a.

In addition, when rainwater enters from between the outdoor side wall portion 111 of the existing upper frame 110 and the outdoor side wall portion 132 of the upper base member 130, the protruding leg portions 133a to 133d dam the rainwater and prevent the rainwater from entering. It also has the function of preventing intrusion into the inside. In particular, the protruding leg portion 133d on the most outdoor side functions as a first weir that first dams rainwater entering from the outdoor side.

a4. Mounting Structure of Upper Base Member As shown in FIG. 4, the outdoor side of the upper base member 130 is fixed to the outdoor side wall portion 111 of the existing upper frame 110 by a mounting member 40 . Further details of the mounting member 40 will be described with reference to FIGS. 10 to 12. FIG. 10 is a partial perspective view of the upper base member 130 viewed from the rear side, FIG. 11 is a front view of the mounting member 40 viewed from the indoor side, and FIG. 12 is a longitudinal sectional view of the mounting member 40. be. 10, illustration of the existing upper frame 110 is omitted in order to facilitate understanding of the configuration.

The mounting member 40 consists of a base 41 attached to the back surface of the base material main body 131, a mounting piece 42 attached to the exterior side wall 111 of the existing upper frame 110, and a countersunk screw rotatably held by the base 41. and an adjusting screw 43 . One or more mounting members 40 are provided according to the length of the upper base member 130 .

The base portion 41 is made of a flat metal plate, and has a pair of support plate portions 41a, 41a erected on its surface (surface on the side of the existing upper frame 110). The support plate portions 41a, 41a are arranged parallel to each other along the indoor/outdoor direction, and stand at predetermined intervals in the longitudinal direction of the upper base member 130. As shown in FIG. The interval between the pair of support plate portions 41a, 41a is set to be approximately the same as the length of the attachment piece 42 (the length along the length direction of the upper base member 130), which will be described later.

As shown in FIG. 9, the base material main body 131 is formed with a plurality of long holes 136 for screw insertion extending along the indoor and outdoor directions. The elongated hole 136 is arranged on the outdoor side of the most outdoor protruding leg 133d. FIG. 9 shows an upper base member 130 to which two mounting members 40 are attached, two elongated holes 136 being provided for each set of mounting members 40 . The base portion 41 is fixed to the base material main body 131 by mounting screws 44 passing through the elongated holes 136 . Since the long hole 136 is long in the indoor-outdoor direction, the fixed position of the base 41 in the indoor-outdoor direction can be finely adjusted.

The mounting piece 42 is made of a metal plate extending substantially parallel to the base material main body 131 . A pair of clamping pieces 42a, 42a are erected on the upper surface of the mounting piece 42 (the surface on the side of the existing upper frame 110). The pinching pieces 42a, 42a extend along the length direction of the upper base member 130. As shown in FIG. As shown in FIG. 12, the clamping pieces 42a, 42a are accommodated from below 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 sandwiched between a pair of support plate portions 41a, 41a on the base portion 41. are arranged as

A mounting screw 45 that penetrates the mounting piece 42 from below is screwed between the pair of clamping pieces 42a, 42a with the outdoor side wall portion 111 sandwiched therebetween. Here, the interval between the clamping pieces 42a, 42a is set slightly narrower than the sum of the thickness of the outdoor side wall portion 111 and the outer diameter of the thread portion of the mounting screw 45. As shown in FIG. Therefore, the outdoor side wall portion 111 between the pinching pieces 42a, 42a is pinched between one pinching piece 42a (in this embodiment, the outdoor-side pinching piece 42a) and the mounting screw 45. As shown in FIG. At this time, since the thread of the mounting screw 45 bites into the outdoor side wall portion 111 and the clamping piece 42a respectively, the mounting screw 45 does not easily come off, and the mounting piece 42 is firmly fixed to the outdoor side wall portion 111. can be done.

As shown in FIG. 12 , a double-faced tape 46 is interposed between the outdoor-side pinching piece 42 a and the outdoor side wall portion 111 to adhere the pinching piece 42 a and the outdoor side wall portion 111 . The double-sided tape 46 restricts the relative movement between the clamping piece 42a and the outdoor side wall portion 111, and prevents the mounting piece 42 from sliding sideways in association with the rotation of the mounting screw 45. FIG. This improves the workability when fixing the mounting piece 42 to the outdoor side wall portion 111 .

The height adjusting screw 43 fixes the mounting piece 42 to the base 41 so that the height can be adjusted. Specifically, a pair of holding claw portions 41b, 41b for holding the head portion 43a of the height adjusting screw 43 is provided on the surface of the base portion 41 between the pair of support plate portions 41a, 41a. The holding claws 41b, 41b hold the head 43a of the height adjusting screw 43 rotatably. The height adjusting screw 43 is screwed into the mounting piece 42 on the indoor side of the pair of clamping pieces 42a, 42a while the head portion 43a is rotatably held by the holding claws 41b, 41b. , to fix the mounting piece 42 to the base 41 . As a result, the outdoor end of the upper base member 130 is fixed to the existing upper frame 110 .

An operation hole 41c having a diameter smaller than the outer diameter of the head 43a of the height adjusting screw 43 is formed between the holding claws 41b, 41b. The top surface (the surface having the driver groove) of the head 43a of the height adjusting screw 43 faces the inside of the operation hole 41c. Further, as shown in FIGS. 9 to 11, the base member main body 131 of the upper base member 130 has a hole portion 137 larger than the operation hole 41c between adjacent elongated holes 136. As shown in FIGS. The operation hole 41 c is arranged inside the hole portion 137 of the base material main body 131 . Therefore, the head portion 43a of the height adjusting 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 main body 131. As shown in FIG.

The mounting piece 42 screwed to the height adjusting screw 43 cannot rotate because it is sandwiched between the pair of support plate portions 41a, 41a. It moves vertically along the axial direction of the height adjusting screw 43 while being sandwiched between the portions 41a, 41a. As a result, the height of the upper base member 130 on the outdoor side can be adjusted, and the levelness of the upper base member 130 can be easily finely adjusted.

Next, the indoor side of the upper base member 130 is fixed to the frame member 3 by mounting screws 134 penetrating through the base member body 131 . Of the plurality of projecting legs 133a to 133d erected on the base material main body 131, a pair of projecting legs 133a and 133b arranged on the indoor side face the inner peripheral surface 3a of the frame member 3. As shown in FIG. The mounting screw 134 is arranged between the pair of protruding legs 133a and 133b, passes through the base material main body 131 and is screwed into the frame member 3. As shown in FIG.

Tightening torque is applied to the base material body 131 when the mounting screw 134 is screwed into the base material body 131 . However, since the pair of protruding leg portions 133a and 133b support the mounting screw 134 so as to sandwich it from the outdoor side and the indoor side, the base material main body 131 reinforces the portion around the mounting screw 134. 131 distortion is suppressed. Since the projecting legs 133a and 133b of the present embodiment extend along the length direction of the base material body 131, the projecting legs 133a and 133b function as reinforcing ribs for the base material body 131, and the mounting screws 134 It is possible to effectively suppress distortion in the length direction of the base material main body 131 centering on .

Further, since the mounting screws 134 are screwed into the angle portions 112 of the existing upper frame 110, the indoor side of the upper base member 130 can be stably fixed. Moreover, since at least one projecting leg portion 113b is arranged to face the angle portion 112, the periphery of the mounting screw 134 can be stably supported on the inner peripheral surface 3a of the frame member 3. FIG.

The upper base member 130 is arranged so that the protruding legs 133a and 133b face the frame member 3, so that the base member main body 131 and the inner peripheral surface 3a of the frame member 3, as shown in FIG. It is attached to the inner peripheral side of the existing upper frame 110 with a predetermined space S1 therebetween. In the present embodiment, the space S1 is such that the distance between the base material main body 131 of the upper base material 130 and the inner peripheral surface 3a of the frame member 3 is equal to the projection height (about 5 mm) of the projecting piece 113 of the existing upper frame 110. is set to be equal to or slightly larger than As a result, the protruding piece 113 of the existing upper frame 110 is completely accommodated in the space S<b>1 and does not interfere with the upper base member 130 .

a5. As shown in FIG. 4, two projecting leg portions 133a and 133b on the indoor side of the upper base member 130 and the inner peripheral surface 3a of the frame member 3 (the surface of the angle portion 112 of the existing upper frame 110). A water stop tape 150 is interposed between them. The water stop tape 150 covers the protruding piece 113 of the existing upper frame 110 and is attached to the vicinity of the parting member 125 of the newly installed upper frame 120 . A mounting screw 134 for fixing the indoor side of the upper base member 130 passes through this waterproof tape 150 . Therefore, the outer peripheral surface of the mounting screw 134 is watertight.

A waterproof tape 151 is attached across the indoor side surface 120 a of the new upper frame 120 and the indoor side surface 130 a of the upper base member 130 . The water stop tape 151 extends from the indoor side surface 130 a of the upper base member 130 so as to overlap a portion of the water stop tape 150 attached to the inner peripheral surface 3 a of the frame member 3 . In this embodiment, the indoor side surface 130a of the upper base member 130 and the indoor side surface 120a of the new upper frame 120 are arranged on the same plane. As a result, the water stop tape 151 can be adhered in a planar manner, so that the workability of pasting is improved, the state of adherence is improved, and the water stop function can be improved. In this embodiment, the indoor side surface 140a of the spacer member 140 is also arranged on the same plane as the indoor side surfaces 120a and 130a, but the position of the indoor side surface 140a of the spacer member 140 is not particularly limited.

Furthermore, as shown in FIGS. 4 and 10, between the existing upper frame 110 and the new upper frame 120, a plurality of water stop materials 160-162 made of foam rubber or the like are interposed. These water stop members 160 to 162 are elongated along the length direction of the new upper frame 120 .

The water stop 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 attached to the upper end portion 132a of the outdoor side wall portion 132 of the upper base member 130. abutting. Also, the water stop 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 base member 130 . Furthermore, the water stop material 162 is arranged 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. is sandwiched between

<B. Lower frame>
Next, the lower frame 200 will be explained. 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 base member 230. As shown in FIGS.

b1. Existing Lower Frame The existing lower frame 210 is attached to the outdoor side of the lower side of the opening 2 of the building. The existing lower frame 210 has an upright wall portion 211 erected from the prospective wall portion 210a toward the new lower frame 220 arranged above. The standing wall portion 211 is arranged continuously along the length direction of the existing lower frame 210 . The projected wall portion 210a is slightly downwardly inclined toward the outdoor side, and the standing wall portion 211 is arranged at the outdoor end portion of the projected wall portion 210a. The standing wall portion 211 shown in the present embodiment is provided so as to protrude at approximately the same height as the inner peripheral surface 3a of the frame member 3, but is not limited to this.

The existing lower frame 210 has an overhanging portion 212 projecting from the lower portion of the standing wall portion 211 to the outside side of the standing wall portion 211 so as to be slightly downwardly inclined toward the outdoor side. The projecting portion 212 projects outward from the standing wall portion 211 at a position below a connection portion 210b between the standing wall portion 211 and the projection wall portion 210a. An outdoor side wall portion 213 extending downward is provided at the outdoor end portion of the projecting portion 212 . In addition, the existing lower frame 210 integrally has an angle portion 214 extending so as to protrude toward the indoor side at the end portion on the indoor side. The angle portion 214 is fixed to the outdoor-side end portion of the inner peripheral surface 3 a of the frame member 3 .

b2. New Lower Frame The new lower frame 220 is attached to the inner peripheral side of the existing lower frame 210 with the lower base member 230 interposed therebetween. The newly installed lower frame 220 is mainly composed of a metal frame, and has an outdoor side wall portion 221 extending downward at the end portion on the outdoor side. The outdoor side wall portion 221 extends substantially parallel to the outdoor side wall portion 213 of the existing lower frame 210 and is arranged so as to cover the entire outdoor side wall portion 213 .

The newly installed lower frame 220 has an angle member 222 made of resin that extends so as to protrude toward the indoor side at the end on the indoor side. The angle member 222 is formed integrally with the groove portion 11 in which the screen door 30 is housed, and is spaced apart 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 3 a 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 parting member 224 made of resin. The parting member 224 is fixed to the inner peripheral surface 3a of the frame member 3 by mounting screws 224a.

The new lower frame 220 is fixed by mounting screws 225 passing through the lower base member 230 . This mounting screw 225 passes through the lower base member 230 but does not pass through the existing lower frame 210 . The mounting screws 225 are arranged on the indoor side of the standing wall portion 211 of the existing lower frame 210 .

b3. The lower base material The lower base material 230 is arranged between the existing lower frame 210 and the new lower frame 220 . As shown in FIG. 8 , a plurality of lower base members 230 are provided at intervals along the length direction of the existing lower frame 210 .

Details of the lower base member 230 are shown in FIG. FIG. 13 is a perspective view of the lower base member 230. FIG. The lower base member 230 is made of metal, and integrally has a base member body 231, an outdoor side wall portion 232, a projecting step portion 233, a connecting portion 234, and a plurality of projecting leg portions 235a to 235c.

The base material main body 231 is made of a plate-like member sufficiently short with respect to the length along the extending direction of the lower frame 200, and covers the inner peripheral side of the existing lower frame 210 over the indoor and outdoor directions, thereby It forms a substantially flat mounting surface for the frame 220 . The indoor-side end of the base material main body 231 is arranged on the inner peripheral surface 3 a of the frame member 3 so as to cover the angle portion 214 of the existing lower frame 210 .

The outdoor side wall portion 232 extends downward from the outdoor-side end portion of the base material main body 231 . The outdoor side wall portion 232 extends substantially parallel to the outdoor side wall portion 213 of the existing lower frame 210, and extends 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. It is arranged with a length approximately equal to that of the outdoor side wall portion 221 .

The protruding stepped portion 233 is disposed at a connecting portion between the base material main body 231 and the outdoor side wall portion 232, and extends from the base material main body 231 so as to partially bend and protrude toward the outdoor side from the outdoor side wall portion 232. It is integrally formed over the outdoor side wall portion 232 .

As shown in FIG. 5, the outdoor side wall portion 221 of the newly installed lower frame 220 is in contact with the projecting stepped portion 233 from the outdoor side. For this reason, the outdoor side wall portion 221 of the new lower frame 220 is located outside the outdoor side wall portion 232 of the lower base member 230 by the protrusion of the protruding stepped portion 233 . As shown in FIG. 4, the protruding portion of the protruding stepped portion 233 to the outdoor side is formed by the ribs 122b, 122c, 122c, 122b, 122c provided on the outdoor side wall portion 122 of the newly installed upper frame 120. The presence of the outdoor side wall portion 132 of the upper frame base member 130 and the sandwiching piece 42a of the mounting piece 42 of the mounting member 40 corresponds to the portion that is arranged to protrude to the outdoor side. Therefore, 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 are aligned on the same plane by bringing the outdoor side wall portion 221 of the new lower frame 220 into contact with the projecting step portion 233. can be done.

The outdoor side wall portion 221 of the new lower frame 220 is arranged so as to be flush with the first outdoor side wall portions 321a and 421a of the new vertical frames 320 and 420 described later. As a result, the facing surfaces of the refurbished sash 1 (surfaces of the outdoor side wall portions 122, 221, 321a, and 421a) are aligned on the same plane over the four circumferences, so that the appearance of the refurbished sash 1 from the outdoor side is good. there is

The connecting portion 234 is a portion that connects the outdoor-side upper surface portion 231A arranged on the outdoor side in the base material main body 231 and the indoor-side upper surface portion 231B arranged on the indoor side. It is provided along the length direction of the base material main body 231 at a position on the indoor side of the mounting screw 225 of the frame 220 .

The outdoor-side top surface portion 231A and the indoor-side top surface portion 231B constitute the top surface of the lower base member 230 . The outdoor-side upper surface portion 231A and the indoor-side upper surface portion 231B have different heights toward the upper frame 100 with the connecting portion 234 as a boundary. That is, in the base material main body 231, the indoor-side upper surface portion 231B is higher than the outdoor-side upper surface portion 231A toward the upper frame 100 with respect to the connecting portion 234. The upper surface has a stepped shape at the connecting portion 234 . Therefore, even if rainwater enters between the newly installed lower frame 220 and the lower base member 230 from the outdoor side, it does not enter the indoor side of the connecting portion 234 . Therefore, according to the lower base member 230, it is possible to dam infiltrated rainwater into the outdoor upper surface portion 231A of the base member main body 231, and prevent rainwater from entering the indoor upper surface portion 231B. .

The connecting portion 234 of the present embodiment is composed of an inclined surface that slopes downward from the indoor upper surface portion 231B toward the outdoor upper surface portion 231A. There may be.

The protruding leg portions 235a to 235c are provided on the rear surface of the indoor upper surface portion 231B of the base material body 231 (the surface on the side of the existing lower frame 210) so as to protrude toward the existing lower frame 210, and extend in the length direction of the base material body 231. extends parallel to the The protruding height of the protruding leg portions 235a to 235c is slightly lower than the height difference between the outdoor side upper surface portion 231A and the indoor side upper surface portion 231B of the base material main body 231 with the connecting portion 234 as a boundary. . As shown in FIG. 5, the projecting legs 235a to 235c are arranged to face the inner peripheral surface 3a of the frame member 3. As shown in FIG.

The protruding leg portion 235a closest to the indoor side is arranged at the end portion of the base material main body 231 on the indoor side. The indoor side surface of the protruding leg portion 235 a forms the indoor side surface 230 a of the lower base member 230 . As shown in FIG. 5, this indoor side surface 230a is arranged on the same plane as the indoor side surface 220a except for the angle cover 223 of the new lower frame 220. As shown in FIG. The angle cover 223 is mounted over the indoor side surface 230a of the lower base member 230 and the indoor side surface 220a of the new lower frame 220 so as to cover these indoor side surfaces 220a, 230a.

b4. Mounting structure of the lower base member As shown in FIGS. 2 and 5, the outdoor side of the lower base member 230 is placed on the projecting portion 212 of the existing lower frame 210 via the height adjustment mechanism 50. ing. Further details of the height adjustment mechanism 50 will be described with reference to FIGS. 14 and 15. FIG. FIG. 14 is a cross-sectional view of the height adjustment mechanism 50 viewed from the front, and FIG. 15 is a cross-sectional view of the height adjustment mechanism 50 viewed from the side.

The height adjustment mechanism 50 includes a base portion 51 attached to the back surface of the base material main body 231 , a height adjustment screw 52 made of a countersunk screw rotatably held on the base portion 51 , and a support threaded to the height adjustment screw 52 . legs 53;

The base portion 51 has a contact portion 51a that contacts the back surface of the base material main body 231, and a pair of side wall portions 51b and 51b that hang downward from both indoor and outdoor side portions of the contact portion 51a. . The contact portion 51 a and the side wall portions 51 b, 51 b extend along the length direction of the lower base member 230 .

A height adjusting screw 52 is accommodated between the side walls 51b, 51b. Specifically, retaining stepped portions 51c, 51c along the cross-sectional shape of the head portion 52a of the height adjusting screw 52 are formed on the inner surfaces of the side wall portions 51b, 51b, respectively. The head portion 52a of the height adjusting screw 52 is inserted between the contact portion 51a and the pair of holding stepped portions 51c, 51c from the side of the base portion 51 so that the contact portion 51a, the holding stepped portion 51c, 51c so as to be rotatable.

As shown in FIG. 13, a base material main body 231 of a lower base material 230 is formed with two elongated holes 237 for screw insertion extending along the indoor-outdoor direction. As shown in FIG. 14, the base 51 is fixed to the base material main body 231 by two mounting screws 54 passing through the elongated holes 237, respectively. Since the elongated hole 237 is long in the indoor-outdoor direction, the fixing position of the base 51 in the indoor-outdoor direction can be finely adjusted.

A through hole 51d having a smaller diameter than the outer diameter of the head 52a of the height adjusting screw 52 is formed in the contact portion 51a. The top surface (the surface having the driver groove) of the head 52a of the height adjusting screw 52 faces the inside of the through hole 51d. Further, as shown in FIGS. 13 to 15, the base member main body 231 of the lower base member 230 has elongated holes 238 formed similarly to the elongated holes 237 between adjacent elongated holes 237 . The through hole 51d is arranged so as to face the inner side of the long hole 238. As shown in FIG.

The support leg portion 53 includes a threaded portion 53a that is screwed to the height adjusting screw 52, and a pair of L-shaped leg portions 53b, 53b that extend downward from the threaded portion 53a with the height adjusting screw 52 interposed therebetween. , has The leg portions 53b, 53b are placed on the projecting portion 212 of the existing lower frame 210. As shown in FIG. The thickness of the support leg portion 53 in the indoor/outdoor direction is substantially the same as the distance between the pair of side wall portions 51 b and 52 b of the base portion 51 . For this reason, as shown in FIG. 15, the support leg portion 53 with the threaded portion 53a screwed to the height adjusting screw 52 is in surface contact with the pair of side wall portions 51b, 51b and is supported from the indoor and outdoor directions. be done.

The 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 through the elongated hole 238 from the upper side of the lower base member 230 with a screwdriver or the like. done. Since the support leg portion 53 is sandwiched between the pair of side wall portions 51b, 51b and cannot rotate, when the head portion 52a of the height adjusting screw 52 is rotated, the support leg portion 53 moves toward the side wall portions 51b and 51b. It moves vertically along the axial direction of the height adjusting screw 52 between 51b. As a result, the height of the outdoor side of the lower base member 230 is adjusted, so that the levelness of the lower base member 230 can be finely adjusted easily.

At this time, the support leg portion 53 of the height adjustment mechanism 50 abuts on the projecting portion 212 which is inclined downward, but is supported by the pair of side wall portions 51b, 51b, so there is no risk of tilting. Therefore, the height adjustment mechanism 50 can stably support the outdoor side of the lower base member 230 in a height adjustable manner.

In addition, the pair of legs 53b, 53b of the support leg 53 is formed in an L shape and has a shape that protrudes left and right along the length direction of the lower base member 230 (left and right direction in FIG. 14). A large contact area of the lower frame 210 with respect to the projecting portion 212 can be ensured. Therefore, the height adjustment mechanism 50 can stably receive the load applied to the lower base member 230 .

Next, the indoor side of the lower base member 230 is fixed to the frame member 3 by means of mounting screws 236 penetrating through the base member body 231 . These projecting legs 235a to 235c face the inner peripheral surface 3a of the frame member 3. As shown in FIG. The mounting screw 236 is arranged between the pair of protruding legs 235 b and 235 c of these and is screwed into the frame member 3 through the base material main body 231 .

Tightening torque is applied to the base material body 231 when the mounting screw 236 is screwed into the base material body 231 . However, since the pair of protruding leg portions 235b and 235c support the mounting screw 236 so as to sandwich it from the outdoor side and the indoor side, the portion around the mounting screw 236 in the base material body 231 is reinforced. 231 distortion is suppressed. Since the protruding legs 235b and 235c of this embodiment extend along the length direction of the base material body 231, the protruding legs 235b and 235c function as reinforcing ribs for the base material body 231, and the mounting screws 236 It is possible to effectively suppress the distortion in the length direction of the base material main body 231 centered on .

Moreover, since the mounting screws 236 are screwed into the angle portions 214 of the existing lower frame 210, the indoor side of the lower base member 230 can be stably fixed. Moreover, since the projecting legs 235b and 235c are arranged to face the angle portion 214, the periphery of the mounting screw 236 can be stably supported on the inner peripheral surface 3a of the frame member 3. FIG.

b5. As shown in FIG. 5, between the protruding leg portions 235a to 235c of the lower base member 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). , a water stop tape 240 is interposed. The water stop tape 240 is stuck between the protruding legs 235a to 235c and the inner peripheral surface 3a of the frame member 3 over the vicinity of the parting member 224 of the new lower frame 220. As shown in FIG. A mounting screw 236 for fixing the indoor side of the lower base member 230 passes through this waterproof tape 240 . Therefore, the outer peripheral surface of the mounting screw 236 is watertight.

A waterproof tape 241 is attached across the indoor side surface 220 a of the new lower frame 220 and the indoor side surface 230 a of the lower base member 230 . The water stop tape 241 extends from the indoor side surface 230 a of the lower base member 230 over the portion of the water stop tape 240 attached to the inner peripheral surface 3 a of the frame member 3 . In this embodiment, the indoor side surface 230a of the lower base member 230 and the indoor side surface 220a of the new lower frame 220 are arranged on the same plane. As a result, the water stop tape 241 can be adhered on a flat surface, so that the workability of pasting is good, the state of adhesion is good, and the water stop function can be improved.

<C. Vertical frame>
Next, the vertical frames 300 and 400 are described. As shown in FIGS. 3, 6 and 7, the vertical frames 300 and 400 include existing vertical frames 310 and 410, new vertical frames 320 and 420, and vertical side base members 330 and 430. be.

c1. Existing Vertical Frames The existing vertical frames 310 and 410 are attached to the left and right vertical sides of the opening 2 of the building, respectively. The existing vertical frames 310, 410 have outdoor side wall portions 311, 411 extending outward on the left and right at the ends on the outdoor side, and extend so as to protrude toward the indoor side on the ends on the indoor side. Angle portions 312 and 412 are integrally provided. The angle portions 312 and 412 are fixed to the outdoor end portion of the inner peripheral surface 3 a of the frame member 3 .

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

The existing vertical frames 310, 410 have a plurality of (three in this embodiment) projecting from the inner peripheral surfaces 310a, 410a toward the inside of the opening 2 (the center side in FIG. 3, the right side in FIG. 6, and the left side in FIG. 7). ). The protruding pieces 313 and 413 extend parallel to the longitudinal direction of the existing vertical frames 310 and 410 .

The protruding pieces 313, 413 are existing protruding pieces 313a, 413a such as fins and ribs originally provided on the existing vertical frames 310, 410 before being refurbished to the refurbished sash 1 (indicated by dashed lines in FIGS. 6 and 7). ) is a projecting piece remainder consisting of the root portions of the existing projecting pieces 313a and 413a left uncut when the . Each projecting piece 313 , 413 has substantially the same height and projects further toward the inside of the opening 2 than the inner peripheral surface 3 a of the frame member 3 . In this embodiment, the protruding pieces 313 and 413 protrude from the inner peripheral surface 3a of the frame member 3 by about 5 mm.

c2. New Vertical Frames New vertical frames 320, 420 are attached to the inner peripheral sides of existing vertical frames 310, 410 with vertical side base members 330, 430 interposed therebetween. The newly installed vertical frames 320 and 420 are mainly made of a metal frame, and integrally have first outdoor side wall portions 321a and 421a extending outward on the left and right at the ends on the outdoor side. End portions of the side wall portions 321a and 421a are integrally provided with second outdoor side wall portions 321b and 421b extending toward the indoor side.

The first outdoor side wall portions 321a, 421a extend substantially parallel to the outdoor side wall portions 311, 411 of the existing vertical frames 310, 410, and are arranged to cover the entire outdoor side wall portions 311, 411. The second outdoor side wall portions 321b and 421b are arranged so as to cover the outdoor side wall portions 311 and 411 of the existing vertical frames 310 and 410 from the left and right outer sides.

The newly installed vertical frames 320 and 420 have resin angle members 322 and 422 at the ends on the indoor side so as to protrude toward the indoor side. The angle members 322 and 422 are formed integrally with the groove portion 11 in which the screen door 30 is housed, and are spaced apart from the inner peripheral surface 3a of the frame member 3 . Resin angle covers 323 and 423 are attached between the angle members 322 and 422 and the inner peripheral surface 3 a of the frame member 3 . Boundaries between the angle covers 323 and 423 and the inner peripheral surface 3a of the frame member 3 are shielded by L-shaped parting members 324 and 424 made of resin. The parting members 324, 424 are fixed to the inner peripheral surface 3a of the frame member 3 by mounting screws 324a, 424a.

The new vertical frames 320, 420 are fixed to the vertical side base members 330, 430 via spacer members 325, 425 by mounting screws 326a, 326b, 426a, 426b. The mounting screws 326a, 426a pass through the central portions of the vertical base members 330, 430 and are screwed into the existing vertical frames 310, 410. As shown in FIG. In addition, the mounting screws 326b, 426b penetrate from the bottom of the groove 11 to near the indoor-side ends of the vertical base members 330, 430. As shown in FIG.

c3. Vertical Side Base Material The vertical side base material 330,430 is arranged between the existing vertical frame 310,410 and the new vertical frame 320,420. As shown in FIG. 8 , a plurality of vertical side base members 330 and 430 are provided at intervals along the length direction of the existing vertical frames 310 and 410 . The vertical side base member 330 and the vertical side base member 430 have the same configuration.

Details of the longitudinal side base members 330, 430 are shown in FIG. FIG. 16 is a perspective view of the back side of the vertical base members 330 and 430 viewed from the outside. The vertical side base members 330 and 430 are made of metal and integrally have base member bodies 331 and 431 , exterior side wall portions 332 and 432 , and projecting portions 333 and 433 .

The base material main bodies 331, 431 are made of plate-shaped members sufficiently short relative to the length in the longitudinal direction of the existing vertical frames 310, 410, and extend over the inner peripheral sides of the existing vertical frames 310, 410 in the indoor and outdoor directions. , forming a substantially flat mounting surface for the new vertical frames 320,420.

As shown in FIG. 8 , a plurality of vertical side base members 330 and 430 are provided at intervals along the length direction of the existing vertical frames 310 and 410 . The indoor-side end portions of the base material bodies 331 and 431 are arranged on the inner peripheral surface 3 a of the frame member 3 so as to cover the angle portions 312 and 412 of the existing vertical frames 310 and 410 .

As shown in FIGS. 6 and 7 , the outdoor side walls 332 and 432 extend outward from the outdoor-side ends of the base material bodies 331 and 431 . The outdoor side wall portions 332, 432 extend substantially parallel to 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 the existing vertical frames 310, 410 Between the outdoor side wall portions 311 and 411, it abuts on the outdoor side wall portions 311 and 411 and is arranged.

The protrusions 333 and 433 are formed integrally with the indoor-side ends of the base material bodies 331 and 431 . The projecting portions 333, 433 are arranged to face the inner peripheral surface 3a of the frame member 3, and protrude from the inner surface of the frame member 3 from the back surface of the base material main body 331, 431 (the surface on the side of the existing vertical frames 310, 410). It protrudes toward the peripheral surface 3a. The protrusion height of the protrusions 333 and 433 is the same as or slightly larger than the height at which the protrusion pieces 313 and 413 remaining on the existing vertical frames 310 and 410 protrude from the inner peripheral surface 3a of the frame member 3. It is said that

c4. Mounting Structure of Vertical Side Base Material The vertical side base material 330 , 430 is attached to the existing vertical frames 310 , 410 by a pair of mounting stays 334 , 434 on the back surface of the base material main body 331 . Each of the mounting stays 334, 434 is formed in a strip shape extending along the length direction of the vertical side base members 330, 430, and elongated holes 335, 435 formed in the base member main bodies 331, 431 extending in the indoor and outdoor directions. , 336, 436 by mounting screws 337, 437. Since the mounting stays 334, 434 are mounted using the elongated holes 335, 435, 336, 436, the mounting positions of the mounting stays 334, 434 in the indoor and outdoor directions can be finely adjusted.

Each of the mounting stays 334, 434 has bent portions 334b, 434b that bend toward the existing vertical frames 310, 410 on both end sides of the fixed portions with the mounting screws 337, 437, respectively. As a result, both ends 334a, 434a of the mounting stays 334, 434 protrude from the base material main bodies 331, 431 toward the existing vertical frames 310, 410 side. The mounting stays 334, 434 are fixed to the inner peripheral surfaces 310a, 410a of the existing vertical frames 310, 410 avoiding the projecting pieces 313, 413 by mounting screws 338, 438 at both end portions 334a, 434a. Thereby, the vertical side base members 330 and 430 are attached to the inner peripheral sides of the existing vertical frames 310 and 410 .

Here, since both ends 334a, 434a of the mounting stays 334, 434 protrude toward the existing vertical frames 310, 410 from the base material bodies 331, 431, the base material bodies 331, 431 It is arranged apart from the inner peripheral surfaces 310a, 410a of the frames 310, 410 by the height of the bending caused by the bending portions 334b, 434b. Thereby, a space S2 is formed between the vertical side base members 330, 430 and the inner peripheral surfaces 310a, 410a of the existing vertical frames 310, 410. As shown in FIG.

The height of the bent portions 334b, 434b of the mounting stays 334, 434 should be the same as or slightly higher than the height (about 5 mm) of the projecting pieces 313, 413 of the existing vertical frames 310, 410. is set to Therefore, all the projecting pieces 313, 413 of the existing vertical frames 310, 410 are accommodated in the space S2 and do not interfere with the vertical side base members 330, 430.

The protrusions 333, 433 are arranged at the ends of the vertical base members 330, 430 closest to the indoor side. Indoor side surfaces of the projections 333 and 433 form indoor side surfaces 330 a and 430 a of the vertical base members 330 and 430 . As shown in FIGS. 6 and 7, the indoor side surfaces 330a, 430a are arranged on the same plane as the indoor side surfaces 320a, 420a except for the angle covers 323, 423 of the new vertical frames 320, 420. As shown in FIGS. The angle covers 323, 423 cover the indoor side surfaces 320a, 330a, 420a, 430a over the indoor side surfaces 330a, 430a of the vertical base members 330, 430 and the indoor side surfaces 320a, 420a of the new vertical frames 320, 420. It is worn as

c5. As shown in FIG. 6 and FIG. 7, the vertical frame water stop structure , the projecting portions 333, 433 of the vertical side base members 330, 430 and the inner peripheral surface 3a of the frame member 3 (the angle portions 312 of the existing vertical frames 310, 410, 412 surface), waterproof tapes 340, 440 are interposed. The water stop tapes 340, 440 are adhered from the projecting pieces 313, 413 of the existing vertical frames 310, 410 to the vicinity of the parting members 324, 424.

Moreover, waterproof tapes 341 and 441 are attached across the indoor side surfaces 320a and 420a of the newly installed vertical frames 320 and 420 and the indoor side surfaces 330a and 430a of the vertical base members 330 and 430, respectively. The water stop tapes 341, 441 extend from the indoor side surfaces 330a, 430a of the vertical side base members 330, 430 over the parts of the water stop tapes 340, 440 attached to the inner peripheral surface 3a of the frame member 3. . In this embodiment, the indoor side surfaces 330a, 430a of the vertical base members 330, 430 and the indoor side surfaces 320a, 420a of the new vertical frames 320, 420 are arranged on the same plane. As a result, the waterproof tapes 341 and 441 can be adhered two-dimensionally, so that the adhesion workability is improved, the adhesion state is improved, and the waterproof function can be improved. In this embodiment, the indoor side surfaces 325a, 425a of the spacer members 325, 425 are also arranged on the same plane as the indoor side surfaces 320a, 420a, 330a, 430a. The position of 425a is not particularly limited.

Further, between the existing vertical frames 310, 410 and the new vertical frames 320, 420, water stop materials 350, 450 made of foamed rubber or the like are interposed. The water stop 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 the new vertical frames 320, 420 elongated along the length of the

The window frame 10 having the above configuration is framed in a rectangular shape by an upper frame 100, a lower frame 200 and left and right vertical frames 300, 400. As shown in FIG. As a result, the new frame (new upper frame 120, new lower frame 220 and new vertical frames 320, 420) of the refurbished sash 1 is connected to the existing frame (existing upper frame 110 , the existing lower frame 210 and the existing vertical frames 310, 410).

In the above embodiment, only the upper base member 130 and the lower base member 230 are configured to screw the mounting screws between the pair of protruding legs. may be

1 modified sash 2 opening 110 existing upper frame (existing frame)
210 existing lower frame (existing frame)
310, 410 Existing vertical frame (existing frame)
120 new vertical frame (new frame)
220 new bottom frame (new frame)
320, 420 New vertical frame (New frame)
134, 236 mounting screw 130 upper base member 230 lower base member 133a, 133b, 235b, 235c protruding leg portion 112, 214 angle portion

Claims (2)

The existing frame remaining at the opening of the building, the new frame attached so as to cover the inner peripheral side of the existing frame, and the A retrofitted sash comprising: a base material attached to an existing frame;
The base member has at least a pair of protruding legs that protrude toward the existing frame, and is attached to the existing frame by passing the mounting screw through between the pair of protruding legs. be
The protruding leg arranged at the indoor-side end of the base member is arranged on the same plane as the indoor side surface of the new frame ,
The existing frame has an angle portion on the indoor side,
A retrofit sash , wherein the mounting screw is threaded against the angle portion . 2. The retrofit sash of claim 1, wherein said pair of projecting legs extend along the length of said base member.

Images