JP2019090317A - Heat-insulating sash - Google Patents

Abstract

To provide a heat-insulating sash where a resin frame is attached to an indoor side of a metallic frame, improving heat insulation property by blocking heat transfer from an airtight material and a periphery of the airtight material into a room.SOLUTION: A heat-insulating sash comprises a window frame where a resin frame is attached to an indoor side of a metallic frame, and a screen supported by the window frame. The resin frame is fixed on an inner periphery surface of the indoor side of the metallic frame, and comprises an airtight material, abutting only an indoor side surface of a resin stile forming the screen, at a middle position in a width direction of an outdoor side surface of the resin stile, and a plurality of hollow parts at an indoor side or an inner periphery side with respect to the airtight material of the resin frame.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a frame including a metal frame and a resin frame disposed on the indoor side of the metal frame, and a heat insulating sash including a shoji.

  In recent years, a heat insulating sash in which a resin frame is attached to the indoor side of a metal frame is known, but in such a sash, an air-tight material that airtights the space between the shoji and the window frame is provided in the resin frame to improve heat insulation. Insulated sash is known. (Patent Document 1)

Japanese Patent Laid-Open No. 2002-194938

In the heat insulation sash like the above prior art document, the airtight material provided in the resin frame is brought into contact with the indoor side surface of the frame of the shoji to form the airtight line on the indoor side, and the window frame is formed together with the airtight line formed on the outdoor side. A sealed space was formed between the house and shoji, and it was thermally insulated.
However, the airtight material forming the airtight line inside and outside the room is exposed indoors, and the heat transferred to the indoor side of the sealed space by convection of air from the metal frame or the like in the sealed space is an airtight material or an airtight material. There was a possibility that it could be transmitted directly to the room through the periphery.
Moreover, although the heat insulation performance can be improved by the resin frame arrange | positioned at the indoor side of a metal frame, higher heat insulation performance was calculated | required.

  In view of the above-mentioned circumstances, the present invention suppresses heat transfer from the airtight material and the periphery of the airtight material forming the indoor side airtight line of the enclosed space between the window frame and the seal of the shoji, and further the heat insulation performance. Intended to improve.

  One embodiment of the present invention includes a window frame formed by attaching a resin frame to the indoor side of a metal frame, and a shoji supported by the window frame, and the resin frame is fixed to the indoor side inner circumferential surface of the metal frame. A heat insulating sash having an airtight member in contact with only the indoor side surface of the resin bowl constituting the shoji at the intermediate position in the finding direction of the outdoor side surface, and having a plurality of hollow portions indoor or inner than the airtight member of the resin frame It is.

  It is possible to improve the heat insulation performance by suppressing the transfer of heat from the periphery of the airtight material and the airtight material forming the indoor side airtight line to the room.

It is a longitudinal cross-sectional view of the vertical slip window which is a resin sash which concerns on embodiment of this invention. It is a cross-sectional view of the vertical slip window which is a resin sash which concerns on embodiment of this invention. It is an expanded longitudinal cross-sectional view of the upper frame of the vertical slip window which is a resin sash which concerns on embodiment of this invention. It is a longitudinal cross-sectional view which shows the structure of the hollow part of the resin upper frame of the vertical slip window which is a resin sash which concerns on embodiment of this invention. It is a longitudinal cross-sectional view which shows the structure of the hollow part of the resin vertical frame of the vertical slip window which is a resin sash which concerns on embodiment of this invention. It is an expanded longitudinal cross-sectional view of the upper frame of the vertical slip window which is a resin sash which concerns on other embodiment of this invention. It is a longitudinal cross-sectional view which shows the junction part of the resin upper frame of the vertical slip window which is a resin sash which concerns on embodiment of this invention, and the right resin vertical frame. It is a perspective view which shows the upper frame of the resin frame of the resin sash which concerns on embodiment of this invention, and the fitting part of a vertical frame.

-Configuration of vertical sliding window-
The heat insulation sash of embodiment of this invention is demonstrated using the vertical slip window shown in FIG.
(Whole configuration)
As shown in FIGS. 1 and 2, the vertical sliding window is a window frame 1 including an upper frame 11, a lower frame 12 and left and right vertical frames 13 and 14 installed at a building opening, and an upper frame 21. , The lower ridge 22, and the left and right vertical ridges 23, 24 are formed in four rounds, and a panel such as glass is fitted on the inner circumference thereof, and the shish 2 is constituted.
The shoji 2 is attached to the upper frame 11 and the lower frame 12 via the link mechanism 61, and is supported openably / closably by the operation of the handle 62. Warpage preventing means 63 is disposed between the left vertical frame 13 and the left vertical frame 23 of the frame, and the closing state of the shoji 2 is established between the right vertical frame 14 and the right vertical frame 24. Locking means 64 are provided for locking.

(Structure of window frame)
The upper frame 11, the lower frame 12, and the left and right vertical frames 13 and 14 constituting the window frame 1 are composed of a metal frame made of a metal material such as aluminum and a resin frame attached to the indoor side of the metal frame There is.
Each frame will be described in detail below.

The metal upper frame 111 constituting the upper frame 11 is, as shown in FIG. 1, on the indoor side of the hollow upper frame main portion 111a facing the outer peripheral surface of the upper collar 21 of the shoji 2 and the upper frame main portion 111a. The intermediate piece 111c is suspended from the inner peripheral surface of the indoor side portion 111b, and the inner peripheral surface on the indoor side of the intermediate piece 111c engages the resin upper frame. It is comprised as the to-be-engaged part 111d.
Further, one end of a link mechanism 61 for opening and closing the shoji 2 is attached to the inner peripheral surface of the upper frame main portion 111a of the metal upper frame 111, and the outer peripheral side of the upper frame main portion 111a The airtight material s1 which abuts on the indoor side surface of the chamber outer wall portion 211b of the metal upper frame 211 is provided to form an airtight line on the outdoor side of the upper frame 11.

  The resin upper frame constituting the upper frame 11 is formed shorter in the left and right (finding) direction than the main resin upper frame 112 engaged with the engaged portion 111 d of the metal upper frame 111 and attached And an auxiliary resin upper frame 113 attached to the inner peripheral surface of the main resin upper frame 112.

  As shown in FIG. 3, the main resin upper frame 112 is formed on the upper surface of the hollow main body portion 112a having a plurality of hollow portions in the vertical (look up) direction and the hollow main body portion 112a. 111 d, and a hollow depending wall 112c which is a wall part by hanging down below the indoor side lower surface of the hollow main body part 112a, and the lower end of the hollow outer side of the hollow main body part 112a An airtight material holding portion 112d for holding the airtight material s3 is provided at the position, and the airtight material s3 abuts on the upper frame 21 of the shoji 2 to form an airtight line on the indoor side. A sub resin upper frame engaging portion 112 e for engaging and holding the sub resin upper frame 113 is formed by the airtight material holding portion 112 d and the hanging wall 112 c.

The sub resin upper frame 113 is formed on the upper surface of the hollow main body portion 113a having a substantially rectangular cross section and having a plurality of hollow portions in the upper and lower (look) direction, and engages with the sub resin upper frame engaging portion 112e. The inner peripheral (lower surface) wall of the hollow main body portion 113a is extended to the indoor side, and abuts on the hanging wall 112c of the main resin upper frame 112 to form a hollow portion. There is.
Then, the secondary resin upper frame 113 is engaged and fixed to the main resin upper frame 112, whereby the outdoor side surface of the secondary resin upper frame 113 is continued substantially flush with the outdoor side surface of the main resin upper frame 112. Since the inner peripheral surface (lower surface) of the resin upper frame 113 is substantially the same as the lower surface of the hanging wall 112c of the main resin upper frame 112, the air sealing material s3 is disposed at an intermediate position in the finding direction of the outdoor side as a whole. And it will be comprised as a resin upper frame by which several hollow parts are laminated | stacked in the prospect direction.

The metal lower frame 121 constituting the lower frame 12 includes a lower frame main portion 121a facing the outer peripheral surface of the lower frame 22 of the shoji 2 and a hollow rising wall 121b continuously provided on the indoor side of the lower frame main portion 121a. It is formed by An airtight material s1 that abuts on the lower rod 22 of the shoji 2 is provided on the outdoor side surface of the lower frame main portion 121a, and on the outdoor side surface of the rising wall 121b An airtight material s3 forming an airtight line on the indoor side is provided in contact, and an airtight space is formed by the airtight lines inside and outside the room.
Further, at the indoor side end of the upper surface of the rising wall 121b, an engaged portion 121c for attaching the resin lower frame is formed.

The resin lower frame constituting the lower frame 12 is a main resin lower frame 122 erected by engaging with the engaged portion 121c of the upper surface of the rising wall 121b of the metal lower frame 121, and a chamber of the main resin lower frame 122 It is comprised from the sub resin lower frame 123 attached to an outer surface.
The main resin lower frame 122 has an indoor side wall 122a that constitutes the indoor side wall portion of the lower frame 12 by being attached to the upper surface of the rising wall 121b of the metal lower frame 121, and the indoor side surface of the indoor side wall 122a is A handle 62 for opening and closing the shoji 2 is disposed.
And the attaching part 122b for attaching the sub resin lower frame 123 is formed in the outdoor side of the indoor side wall 122a.

The sub resin lower frame 123 is composed of an attachment body 123a attached to the attachment portion 122b of the main resin lower frame 122, and a hollow extension 123b extending from the upper end of the attachment body 123a to the outside. A protrusion 123c is provided on the tip of the extended portion 123b so as to be airtight in the vicinity of the lower rod 22 of the shoji 2.
A handle mounting bracket 124 is disposed on the outdoor side of the portion of the indoor side wall 122 a of the main resin lower frame 122 to which the handle 62 is attached, and is fixed to the upper surface of the rising wall 121 b of the metal lower frame 121. The handle 62 is fixed through the indoor side wall 122 a of the main resin lower frame 122.

  The left vertical frame 13 and the right vertical frame 14 have substantially the same shape, and the metal left vertical frame 131 and the metal right vertical frame 141 are formed by forming the resin frame locking portions 131a and 141a on the indoor inner peripheral surface. And a resin left vertical frame 132 and a resin right vertical frame 142 which are locked to the resin frame locking portions 131a and 141a.

The resin left vertical frame 132 and the resin right vertical frame 142 have main hollow portions 132a and 142a constituting the outer peripheral side in the finding direction, and a plurality of hollow portions adjacent to the inner peripheral surface side of the main hollow portions 132a and 142a It is composed of sub hollow portions 132b and 142 b laminated, and the prospective direction dimensions of the main hollow portions 132 a and 142 a and the sub hollow portions 132 b and 142 b are formed to be substantially the same as the prospective dimensions of the sub resin upper frame 113. ing.
The left and right longitudinal ridges 23 and 24 are located in the middle of the finding direction of the outer side surface of the resin left vertical frame 132 and the resin right vertical frame 142, for example, near the boundary between the main hollow portions 132a and 142a and the sub hollow portions 132b and 142b. An air-tight material s4 which is in contact with the indoor side surface of the resin left vertical weir 232 and the resin right vertical weir 242 is disposed.
Locking portions 132c and 142c for locking the resin frame locking portions 131a and 141a are formed on the outer peripheral surface of the main hollow portions 132a and 142a, and angle portions 132d and 142d are formed on the indoor surface, and resin The left vertical frame 132 and the resin right vertical frame 142 lock the locking portions 132c and 142c of the main hollow portions 132a and 142a to the resin frame locking portions 131a and 141a of the metal left vertical frame 131 and the metal right vertical frame 141. In addition, the angle portions 132 d and 142 d can be stably fixed by fixing them to a forehead portion such as a wooden opening of the building by fixing means such as a screw.

When the upper frame 11, the lower frame 12 and the left and right vertical frames 13 and 14 are framed in four frames, the connecting structure of the resin upper frame and the resin vertical frame, and the resin lower frame and the resin vertical frame The connection structure will be described.
First, the connection structure between the resin upper frame and the resin vertical frame will be described. When connecting the resin upper frame and the resin right vertical frame, as shown in FIGS. 7 and 8, the suspension forming the indoor side wall portion is suspended from the inner peripheral surface of the main resin upper frame 112 of the resin upper frame. At the outdoor side of the wall 112c, the upper ends of the main hollow portion 142a and the sub hollow portion 142b of the resin right vertical frame 142 are in contact with the inner peripheral surface of the main resin upper frame 112, and the main resin upper frame 112 and the resin right vertical frame 142 And are connected.
Then, on the outdoor side of the hanging wall 112c of the main resin upper frame 112, both end surfaces of the sub resin upper frame 113, which are shorter in the left and right (finding) direction than the main resin upper frame 112, contact the inner peripheral surface of the resin right vertical frame 142. The resin upper frame and the resin right vertical frame are connected so as to be in contact with each other.

In this manner, the upper ends of the left and right resin vertical frames 132 and 142 are brought into contact with the inner peripheral surface of the main resin upper frame 112 on the outdoor side of the hanging wall 112 c of the main resin upper frame 112. Abutment parts of the main resin upper frame 112 and the resin vertical frames 132 and 142 and the resin vertical frames 132 and 142 by connecting the both ends by bringing them into contact with the inner peripheral surfaces of the left and right resin vertical frames 132 and 142 The indoor side of the contact portion with the sub resin upper frame 113 can be covered by the hanging wall 112 c provided on the main resin upper frame 112.
Further, the estimated dimensions of the sub resin upper frame 113 disposed between the inner peripheral surfaces of the left and right resin vertical frames 132, 142 are substantially the same as the estimated dimensions of the sub hollow portions 132b, 142 b of the left and right resin vertical frames 132, 142. Therefore, the sub resin upper frame 113 connected on the inner circumferential surface of the main resin upper frame 112 and the left and right resin vertical frames 132 are flush with each other on the indoor side surface and the outdoor side surface, and both of the main resin upper frame 112 It will be arrange | positioned on the outdoor side of the hanging wall 112c.

Next, the connection structure of the resin lower frame and the resin vertical frame will be described. When connecting the resin lower frame and the resin vertical frame, the mains of the left and right resin vertical frames 132 and 142 on the outer side of the indoor side wall 122a of the main resin lower frame 122 constituting the indoor side wall of the lower frame 12. The lower ends of the hollow portions 132a and 142a and the auxiliary hollow portions 132b and 142b are in contact with the inner peripheral surface of the lower frame 12, and both side ends of the auxiliary resin lower frame 123 attached to the mounting portion 122b of the main resin lower frame 122 are left and right. It is connected in contact with the inner peripheral surface of the resin vertical frame 132, 142.
Similar to the upper frame portion, the lower ends of the left and right resin vertical frames 132 and 142 are brought into contact with the inner peripheral surface of the lower frame 12 outside the indoor side wall 122 a of the main resin lower frame 122. Abuts the lower frame 12 with the resin vertical frame 132, 142 and connects the resin vertical frame 132, 142 and sub The indoor side of the portion in contact with the resin lower frame 123 can be covered by the indoor side wall 122 a of the main resin lower frame 122.
A screen door 7 can be disposed on the indoor side of the main resin upper frame 112, the main resin lower frame 122, the resin left vertical frame 132, and the resin right vertical frame 142, as needed.

(Structure of Shoji)
The upper frame 21, lower frame 22 and left and right vertical frames 23, 24 constituting the shoji 2 are composed of a metal plate made of a metal material such as aluminum and a resin case made of a resin material covering the inner side of the metal case. It is done.
The upper iron 21, the lower iron 22 and the metal upper iron 211, the metal lower iron 221, the metal left electric iron 231 and the metal right electric iron 241 which constitute the left and right vertical irons 23 and 24 are arranged at the outer peripheral position of the glass panel The hollow portion 211a, 221a, 231a, 241a, and the outer wall portion 211b, 221b, 231b, 241b which constitutes the outdoor side wall and the glass space and extends to the outer peripheral side.
Then, in the closed state of the shoji 2, the airtight material s 1 provided on the metal upper frame 111 of the upper frame 11 and the airtight material s 1 provided on the metal lower frame 121 of the lower frame 12 are the chamber outer wall portion 211 b and the lower part of the upper frame 21. The airtight members s2 and s2 provided on the indoor side of the chamber outer wall portion 231b of the left vertical rod 23 and the chamber outer wall portion 241b of the right vertical rod 24 are in contact with the indoor side of the chamber outer wall portion 221b of the crucible 22 By abutting on 13, 14, an airtight line on the outdoor side is formed.

On the other hand, as shown in FIG. 1, the resin upper weir 212 and the resin lower weir 222 which constitute the upper weir 21 and the lower weir 22 cover the indoor side surfaces of the hollow portions 211a, 221a of the metal upper weir 211 and the metal lower weir 221. The hollow portions 212a and 222a, and the glass interspaces 212b and 222b extending inward from the inner circumference of the hollow portions 212a and 222a and constituting the glass interspace.
Also, as shown in FIG. 2, the resin left vertical weir 232 and the resin right vertical weir 242 that constitute the left and right vertical weirs 23 and 24 are hollow portions 231 a and 241 a of the metal left vertical weir 231 and the metal right vertical weir 241. The hollow portions 232a and 242a cover the inner side of the room, and the glass interspaces 232b and 242b extending inward from the inner side of the hollow side of the hollow portions 232a and 242a to constitute a glass space.

(Adiabatic structure)
The heat insulation structure by the window frame 1 and the shoji 2 demonstrated above is demonstrated.
At the time of closing the shoji 2, the airtight material s3 disposed at the middle position of the resin upper frame in the upper and lower (finding) direction abuts the indoor side surface of the resin upper weir 212 of the shoji 2 to form the indoor airtight line. . At this time, since the sub resin upper frame 113 is disposed on the lower indoor side of the airtight material s3, as shown in FIGS. 3 and 4, the upper and lower sides of the airtight line on the indoor side The heat insulating structure (sub resin upper frame) in which a plurality of hollow portions divided in the direction are stacked is disposed, and the airtight material s3 in contact with the space between the upper frame 11 and the upper frame 21 is The heat transfer by air convection in the hollow portion is not directly exposed to the indoor space, but the hollow portions of the auxiliary resin upper frame intersect the air-tightening material and streamlines n of heat transfer from the periphery of the air-tightening material. By dividing, it is possible to suppress the transfer of heat into the room and improve the heat insulation.

Further, as shown in FIG. 4, focusing on the metal material that greatly affects the heat transfer in the hollow portion of the sub resin upper frame 113, the partition wall w1 that divides the hollow portion of the sub resin upper frame 113 into plural 45 degrees or less with respect to a line L1 connecting the indoor side inner peripheral end p1 of the hollow portion and the metal material (the lower end of the intermediate piece 111c of the metal upper frame 111) closest to the indoor side inner peripheral end p1 By forming to have the perpendicular M1 intersecting at the angle α1, it is possible to efficiently divide the convection of air in the hollow portion of the sub resin upper frame 113 with respect to the direction of heat transfer, and the heat insulation performance is improved. It can be enhanced.
The resin upper frame is not limited to the main resin upper frame 112 and the sub resin upper frame 113, and as shown in FIG. 6, even a resin upper frame formed only by the main resin upper frame 112. The partition wall w3 for dividing the hollow portion disposed on the inner peripheral chamber side of the airtight line on the indoor side of the main resin upper frame 112 into a plurality is divided into the indoor inner peripheral end p3 of the hollow portion and the indoor inner peripheral end p3. It is formed so as to have a perpendicular M3 intersecting at an angle α3 of 45 degrees or less with respect to a line L3 connecting the closest metal material (the lower end of the intermediate piece 111c of the metal upper frame 111) q3. The convection of air in the hollow portion of the resin upper frame 112 can be efficiently divided with respect to the heat transfer direction, and the heat insulation performance can be enhanced.

  On the other hand, in the closed state of the shoji 2, the airtight material s 4 disposed at the middle position of the left and right resin vertical frames 132 and 142 in the left and right (finding) direction By making contact, an airtight line on the indoor side is formed, and, as shown in FIG. 5, a plurality of hollow portions partitioned in the prospecting direction by the partition wall w2 are stacked on the inner peripheral side of the airtight line on the indoor side. Since the sub hollow portions 132b and 142b are disposed, the airtight material s4 in contact with the space between the vertical frames 13 and 14 and the vertical weirs 23 and 24 is not directly exposed to the indoor space, and the heat insulation property is improved. It can be done.

  Also, as shown in FIG. 5, focusing on the metal material that greatly affects the heat transfer in the sub hollow portions 132 b and 142 b of the left and right resin vertical frames 132 and 142, the sub hollow portions 132 b and 142 b may be plural. The dividing wall w2 for partitioning defines the indoor side inner peripheral end p2 of the sub hollow portions 132b and 142b and the metal material (the indoor side end of the hollow portion 211a of the metal upper portion 211) closest to the indoor side inner peripheral end p2. By forming a perpendicular M2 intersecting at an angle α2 of 45 degrees or less with respect to the connected line L2, the convection of air in the sub hollow portion is efficiently divided with respect to the direction of heat transfer. Can improve the heat insulation performance.

  That is, in the heat insulating sash of the present embodiment, a heat insulating structure (sub resin upper frame) in which a plurality of hollow portions partitioned by the partition walls are stacked is disposed on the inner peripheral side or the indoor side of the airtight line on the indoor side. And, in providing the partition walls, focusing attention on the transfer of heat from the metal material located closest to the indoor side end of the hollow portion of the resin frame disposed on the inner circumferential side or the indoor side of the metal frame, By providing a partition to block the line connecting the indoor side end and the metal material located closest to the indoor side end of the hollow portion of the resin frame, the heat transfer in the entire heat insulation sash is efficiently suppressed. can do.

  Furthermore, by forming the space d1 between the indoor side surface of the resin upper shell 212 of the shoji 2 and the outdoor side surface of the auxiliary resin upper frame 113 to be 10 mm or less, a semi-hermetic air layer is formed on the inner peripheral portion of the airtight material s3. The heat transfer from the vicinity of the material s3 can be further impeded, and the distance d2 between the indoor side of the resin longitudinal walls 232 and 242 and the sub hollow portions 132b and 142b of the resin vertical frames 132 and 142 is 10 mm or less A semi-hermetic air layer is formed on the inner circumferential portion of the airtight material s4, and the heat transfer from the vicinity of the airtight material s4 can be further impeded.

As described above, in the vertical sliding window according to the present embodiment, the outer edge of the outer shell of the resin upper frame formed by the main resin upper frame and the auxiliary resin upper frame is in contact with the upper lid of the shoji The airtight material forming the indoor side airtight line is arranged, the sub resin upper frame is arranged on the lower room side of the airtight material forming the indoor side airtight line, and the up and down (finding) direction on the lower indoor side of the airtight matter Since a plurality of hollow portions are stacked on one another, the heat-transfer material forming the gas-tight line and the heat transfer from the periphery to the room are suppressed by the plurality of hollow portions intersecting the heat transfer streamline. Can be prevented from being directly transmitted to the room.
In particular, with regard to the partition partitioning the hollow portion disposed on the inner circumferential side or the indoor side of the airtight line on the indoor side, by placing attention to the metal material closest to the indoor side end of the hollow portion, The heat transfer to the indoor space can be efficiently suppressed.

In addition, since the sub resin upper frame 113 is disposed on the indoor side of the resin upper ridge 212 of the shoji 2 so that the distance d1 is 10 mm or less, the sub resin upper frame 113 and the resin upper ridge 212 of the shoji 2 As a result, a semi-hermetic air layer is formed, and the heat transfer from the glass gap to the indoor side can be suppressed without making the glass gap of the resin upper shell 212 into a hollow portion. Thermal insulation performance can be improved without increasing the size.
And the heat insulation structure by the resin upper frame and the resin upper ridge of the shoji 2 can be constructed also between the resin vertical frame and the resin vertical ridge, and the secondary resin disposed between the inner circumferential surfaces of the resin vertical frame Since the estimated size of the upper frame is substantially the same as the estimated size of the sub hollow portions of the left and right resin vertical frames, after the framework, the outdoor side surface of the sub resin upper frame and the resin vertical frame become substantially flush, and the shoji 2 Since the heat insulation structure can be formed by the semi-hermetic air layer and the plurality of hollow portions over at least three sides of the above, the heat insulation property is further improved.
Furthermore, since the lower end of the outer side of the main resin upper frame 112 is locked to the intermediate piece 111c of the metal upper frame 111, the airtight member s3 provided at the lower end of the outer side of the main resin upper frame 112 is airtight. The material holding portion is stable without bending, and the indoor-side airtight line formed by the airtight material s2 can be made reliable.

  In the present embodiment, the heat insulating structure of the heat insulating sash according to the present invention is described using the upper frame of the vertical sliding window, but the heat insulating structure employed in the present embodiment includes any FIX window. The frame can also be adopted as a heat insulation sash in a form, and the frame is not limited to the upper frame, and the metal frame in the present invention is not limited to those formed entirely of metal, and a metal frame It also includes a composite frame in which they are connected by a bridge of resin or the like.

1: Window frame 11: Upper frame 111: Metal upper frame 112: Main resin upper frame 112a: Hollow main body 112b: Engaging portion 112c: Hanging wall 112d: Airtight material holding portion 112e: Secondary resin upper frame engaging portion 113: Sub-resin upper frame 113a: hollow main body 113b: engaging portion 2: shoji 21: upper edge 211: metal upper edge 212: resin upper edge s1: air tight material s2: air tight material s3: air tight material s4: air tight material

Claims (2)

A window frame formed by attaching a resin frame to the indoor side of a metal frame, and a shoji screen supported by the window frame;
The resin frame is fixed to the indoor side inner peripheral surface of the metal frame, and has an airtight member in contact with only the indoor side surface of the resin cage constituting the shoji at the middle position in the finding direction of the outdoor side. Thermal insulation sash with multiple hollows on the indoor side. A window frame formed by attaching a resin frame to the indoor side of a metal frame, and a shoji screen supported by the window frame;
The resin frame is fixed to the indoor side inner peripheral surface of the metal frame, and has an airtight member in contact with only the indoor side surface of the resin cage constituting the shoji at the middle position in the finding direction of the outdoor side. Heat insulation sash having a plurality of hollow parts on the inner circumferential side.

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