JP7326220B2 - Resin sash - Google Patents

Description

The present invention relates to a resin sash to be placed in a building opening.

2. Description of the Related Art Conventionally, a resin sash that has a frame material made of resin and a frame material made of resin and is arranged at a building opening is known.

JP 2016-108909 A

In recent years, resin sashes such as those described in Document 1 above are also required to have fire resistance.

SUMMARY OF THE INVENTION An object of the present invention is to improve the fireproof performance of a resin sash placed at a building opening by suppressing the shoji from falling due to melting of the frame material in the event of a fire.

One embodiment includes a resin frame and a resin shoji, the frame has a reinforcing member made of a metal material on the inner peripheral surface of the vertical frame, and the reinforcing member, when the shoji is closed, This resin sash has a projection wall and an interior-side projection wall facing the indoor side surface from the outer peripheral surface of the door frame of the inner shoji.
Further, one embodiment includes a resin frame and a resin shoji, the frame has a reinforcing member made of a metal material on the inner peripheral surface of the vertical frame, and the reinforcing member closes the shoji. Sometimes, it is a resin sash having a projection wall facing the outdoor side from the outer peripheral surface of the door frame of the outdoor shoji and an outdoor side facing wall.

According to this embodiment, in the resin sash arranged at the opening of the building, it is possible to improve the fire prevention performance by preventing the shoji from falling due to melting of the frame material in the event of a fire.

It is an internal view of the resin sash of one embodiment. It is a vertical sectional view of the resin sash of one embodiment. It is a cross-sectional view of the resin sash of one embodiment. It is a figure of the vertical frame portion of the resin sash of one embodiment, (a) is a cross-sectional view of the reinforcing member, (b) is a cross-sectional view of the right vertical frame to which the reinforcing member is fixed, (c) is a cross-sectional view of another reinforcing member; It is a figure of the reinforcement member of the resin sash of one Embodiment, (a) (b) is a perspective view of a reinforcement member. It is a figure of the reinforcement member of the resin sash of other embodiment, (a) (b) is a perspective view of a reinforcement member. It is a perspective view of the right vertical frame of the resin sash of other embodiment. It is a figure of the reinforcement member of the resin sash of other embodiment, (a) (b) is a perspective view of a reinforcement member. It is a perspective view of the right vertical frame of the resin sash of other embodiment.

A resin sash of one embodiment will be described with reference to the drawings.
The resin sash of this embodiment, as shown in FIG. there is

The sash frame 1 of this embodiment has an upper frame 11, a lower frame 12, and left and right vertical frames 13, 14. The left and right vertical frames 13 and 14 are fixed to the inner peripheral surface of the opening of the building by fixing means such as screws, thereby forming the frame 1 around the opening of the building on all four sides.

The inner shoji 2 of the sash of this embodiment is composed of an upper frame 21, a lower frame 22, a left vertical frame (suming frame) 23, and a right vertical frame (door frame) 24, and a panel body 25, and the outer shoji 3 is formed by assembling an upper frame 31, a lower frame 32, a left vertical frame (door frame) 33 and a right vertical frame (door frame) 34, The panel body 35 is attached to the .
A plurality of crescents 6, 6 for locking the inner and outer shojis 2, 3 in the closed state are provided at the meeting portions of the inner and outer shojis 2, 3.

(Configuration of frame)
As shown in FIG. 2, the upper frame 11 of the frame 1 has a substantially flat plate-like upper frame main body 111 made of a resin material, and an inner peripheral surface (lower surface) of the upper frame main body 111 made of a metal material such as an aluminum alloy. It has an upper rail member 112 positioned thereon.
The upper frame main body 111 and the upper rail member 112 are fastened together to the inner peripheral surface (lower surface) of the opening of the building by fixing means b such as screws.

The upper frame main body 111 has an upper frame main body portion 111a arranged on the inner peripheral surface of the opening of the building, and an indoor side wall portion 111b hanging from the indoor side end of the upper frame main body portion 111a.

The upper rail member 112 includes an upper rail fixing portion 112a fixed to the opening of the building together with the upper frame main body 111, an upper inner rail 112b extending downward from the indoor side of the upper rail fixing portion 112a, and an upper rail fixing portion. It has an upper and outer rail 112c vertically installed below the outdoor side of 112a.

Between the upper inner rail 112b and the upper outer rail 112c and above the joint frames 23 and 34 of the inner shoji 2 and the outer shoji 3, a wind stop member 41 having a fin-like wind stop portion is arranged. ing.

As shown in FIG. 2, the lower frame 12 of the frame 1 includes a substantially flat plate-shaped lower frame main body 121 made of a resin material, and an inner peripheral surface (upper surface) of the lower frame main body 121 made of a metal material such as an aluminum alloy. It has a lower rail member 122 positioned thereon.
The lower frame main body 121 and the lower rail member 122 are fastened together to the inner peripheral surface (upper surface) of the opening of the building by fixing means b such as screws.

The lower frame main body 121 has a lower frame main body portion 121a fixed to the opening of the building and an indoor side wall portion 121b standing upward from the indoor side end of the lower frame main body portion 121a.

The lower rail member 122 includes a lower rail fixing portion 122a fixed to the opening of the building together with the lower frame main body 121, a lower inner rail 122b standing upward from the indoor side of the lower rail fixing portion 122a, and the lower rail fixing portion 122a. It has a lower outer rail 122c erected upward from the outdoor side of the vehicle.

A wind stop member having a fin-shaped wind stop part between the lower inner rail 122b and the lower outer rail 122c of the lower frame 12 and below the joint frame 23, 34 of the inner shoji 2 and the outer shoji 3. 42 are arranged.

As shown in FIG. 3, the left and right vertical frames 13 and 14 of the frame 1 have substantially the same structure, so the right vertical frame 14 will be mainly described here.
In the drawings, the corresponding parts of the left vertical frame are given appropriate reference numerals.

The right vertical frame 14 is made of a resin material, and includes a right vertical frame body portion 141a formed in a substantially flat plate shape, and a central wall portion protruding in the inner peripheral direction from approximately the center position of the right vertical frame body portion 141a in the projection direction. 141b, an indoor side wall portion 141c protruding in the inner peripheral direction from the indoor end of the right vertical frame main body portion 141a, and an outdoor side wall portion protruding in the inner peripheral direction from the outdoor end of the right vertical frame main body portion 141a. 141d, and is fixed to the inner peripheral surface of the opening of the building by fixing means such as screws.

The central wall portion 141b has a fin-shaped airtight piece extending to both the indoor and outdoor sides at the inner peripheral end. The fin-like airtight piece abuts against the door frame 24 of the inner shoji 2 to keep the inner shoji 2 and the right vertical frame 14 airtight when the shoji is closed.

The right vertical frame 14 is made of a metal material such as aluminum alloy or steel and has a substantially L-shaped cross section or a substantially U-shaped cross section on the inner peripheral side of the right vertical frame main body portion 141a and the room inner side of the central wall portion 141b. A reinforcing member 8 is provided, and a heat expansion material is arranged on the inner peripheral surface of the reinforcing member 8 so as to face the door frame 24 of the inner shoji 2. - 特許庁

The left vertical frame 13 is made of a metal material such as an aluminum alloy or steel and has a substantially L-shaped cross section or a substantially U-shaped cross section on the inner peripheral side of the left vertical frame main body portion 131a and on the outdoor side of the central wall portion 131b. It is different from the right vertical frame 14 in that a heat expansion material is arranged on the inner peripheral surface of the reinforcing member 8 so as to face the door frame 33 of the outer shoji 3. .

When fixing the frame body 1 of the sash of the present embodiment to the opening of the building, for example, the left vertical frame 13→lower frame 12→right vertical frame 14→upper frame 11 are arranged and fixed on the four sides of the building opening in this order. By doing so, the frame 10 can be arranged on the four sides of the opening of the building.

At this time, at the four corners of the building opening, at least a part of the upper inner rail 112b, the upper outer rail 112c and the lower inner rail 122b, the lower outer rail 122c of the horizontal frame (upper frame 11, lower frame 12), or the vertical frame The upper frame 11, the lower frame 12 and the left and right vertical frames 13 and 14 interfere with each other during installation by notching a part of the central wall portions 131b and 141b of (the left vertical frame 13 and the right vertical frame 14). can be prevented.

(Structure of inner shoji)
As shown in FIG. 2, the upper frame 21 of the inner shoji 2 has an upper frame main body 211 made of a resin material and a reinforcing core material 212 made of a metal material such as an aluminum alloy and embedded in the upper frame main body 211. there is
The upper frame main body 211 has a panel frontage 211a for holding the panel body 25, and an opening 211b formed on the outer peripheral side of the panel frontage 211a and guided by the upper inner rail 112b. A reinforcing core 212 is arranged.

A reinforcing member 213 made of a metal material such as steel is arranged in the panel frontage portion 211a, and the panel body 25 is held by the panel frontage portion 211a via the reinforcing member 213 and the flame-retardant glazing channel. ing.
An airtight piece is provided at the upper end of the inner and outer walls forming the opening 211b so as to abut or be close to the upper inner rail 112b.

The reinforcing core member 212 includes a bottom wall portion 212a arranged along the bottom portion of the opening portion 211b, and an indoor wall portion 212b extending continuously along the indoor wall of the opening portion 211b from the indoor-side end portion of the bottom wall portion 212a. and an exterior wall portion 212c extending along the exterior wall of the opening 211b continuously from the exterior end portion of the bottom wall portion 212a.

A reinforcing member 214 made of a thin plate such as steel is arranged on the upper surface of the bottom wall portion 212a. The bottom wall of the opening 211b is interposed between the reinforcing member 213 and the connecting means.

The upper inner side portions of the inner wall portion 212b and the outer wall portion 212c of the reinforcing core member 212, the upper surface of the thin plate reinforcing member 214, and the reinforcing member 213 arranged in the panel frontage portion 211a are heated and expanded as necessary. material is placed.

The lower frame 22 of the inner shoji 20, as shown in FIG. 2 has a reinforcing core 223 .
The lower frame main body 221 has a panel frontage portion 221a on the inner peripheral side, a hollow portion 221b arranged on the outer periphery of the panel frontage portion 221a, and an opening portion 221c on the outer peripheral side.

The first reinforcing core member 222 has a hollow shape with a substantially rectangular cross section, and is arranged in the hollow portion 221 b of the lower rail main body 221 . The second reinforcing core member 223 has a cross-sectional shape with a rectangular hollow portion and an opening opening downward, and is arranged in the opening 221 c of the lower rail body 221 .

In the hollow portion of the first reinforcing core member 222, a first reinforcing member 224 made of steel or the like and having a substantially U-shaped cross section is arranged so as to open in the outer peripheral direction. , a second reinforcing member 225 and a third reinforcing member 226 having a substantially U-shaped cross section are arranged so as to open toward the room.

A fourth reinforcing member 227 made of a metal material such as steel is arranged in the panel frontage portion 221a. 221a.

The fourth reinforcing member 227, the first reinforcing core member 222, and the first reinforcing member 224 are connected via connecting means across the bottom wall of the panel frontage portion 221a.
In addition, the first reinforcing core member 222, the second reinforcing core member 223, and the second reinforcing member 225 are connected by connecting means across the bottom wall of the hollow portion 221b of the lower rail main body 221. and the third reinforcing member 226 are connected by connecting means with the intermediate wall of the second reinforcing core member 223 interposed therebetween.
At a predetermined position of the opening 221c of the lower frame body 221, wheels 92 that run on the lower inner rail 122b are arranged so as to be able to travel on the lower inner rail 122b.

As shown in FIG. 3, the right vertical frame (door frame) 24 of the inner shoji 20 is made of a resin material, and is composed of a right vertical frame main body portion 241b having a hollow portion with a substantially rectangular cross section and a right vertical frame main body portion 241b. It has a panel frontage 241a for holding the panel body 25 formed on the inner peripheral side.

A first reinforcing member 242 made of a metal material such as steel and having a substantially U-shaped cross section and opening toward the outer peripheral side is arranged in the hollow portion of the right vertical frame main body portion 241b. A second reinforcing member 243 made of a metal material and having a substantially U-shaped cross section that opens toward the inner periphery is arranged in the panel frontage portion 241a. It is held in the panel frontage portion 241a via an elastic glazing channel.
The first reinforcing member 242 and the second reinforcing member 243 are connected by a connecting means with the inner peripheral wall portion of the right vertical frame body portion 241b interposed therebetween.
In addition, the first reinforcing member 242 arranged in the hollow portion of the right vertical frame body portion 241b is not limited to the substantially U-shaped cross section, and may have, for example, a hollow structure having a substantially rectangular cross section.

The left vertical frame 23 of the inner shoji 2 is made of a resin material, and as shown in FIG. It has a panel frontage portion 231a that is formed.

A contact piece 231c extending to the outside of the room is formed at the inner peripheral end of the left vertical frame 23, and the outer peripheral end of the right vertical frame (combined frame) 34 of the outside shoji 3 is provided on the indoor side. The airtight material s is in contact.
A crescent lock 61 having fireproof performance, for example, is attached to the outer peripheral surface of the left vertical frame 23 .

In the hollow portion of the left vertical frame body portion 231b, there are a projection surface portion 232a made of a metal material such as steel and along the bottom wall of the panel frontage portion 231a, a viewing surface portion 232b along the outdoor side surface of the left vertical frame body portion 231b, and an outer peripheral side. A first reinforcing member 232 having a viewing surface of .

In the panel frontage 231a, a third reinforcing member 234 having a substantially U-shaped cross section that opens toward the inner circumference is arranged. It is held in the panel frontage portion 231a via a channel.

The first reinforcing member 232 and the third reinforcing member 234 are connected by connecting means with the inner peripheral wall of the left vertical frame body portion 231b and the thermal expansion member interposed therebetween.
The panel body 25 used for the inner shoji 20 is made of glass having fire resistance and heat resistance, such as crystallized glass.

(Composition of outside shoji)
The outside shoji 3 will be explained below, but since the outside shoji 3 and the inside shoji 2 basically have the same configuration in terms of the upper and lower frames and the door frame, the right side of the outside shoji 3 will be described here. The vertical frame 34 will be described, and the description of the configuration similar to that of the inner shoji 2 will be omitted.

The right vertical frame 34 of the outer shoji 3 is made of a resin material, and as shown in FIG. It has a panel frontage portion 341a that is closed.

In the hollow part of the right vertical frame body portion 341b of the right vertical frame 34, there is provided a first wall 342a, an indoor side wall 342b, and an outdoor side wall 342c, which has a substantially U-shaped cross section and is open in the outer peripheral direction. A reinforcing member 342 is arranged, and a second reinforcing member 343 having a substantially U-shaped cross section and opening toward the inner peripheral side is arranged in the panel frontage portion 341a.

The first reinforcing member 342 and the second reinforcing member 343 are connected by connecting means with the wall on the inner peripheral side of the right vertical frame main body portion 341b interposed therebetween, and the panel body 35 is connected to the second reinforcing member 343 and the difficult-to-reinforcement member. It is held in the panel frontage 341a via a flammable glazing channel.
The first reinforcing member 342 is provided, if necessary, with a thermal expansion material that expands when heated in the event of a fire.

An abutting piece 341c extending toward the inside of the room is formed on the inner peripheral end of the right vertical frame 34, and is provided on the outside of the outer peripheral end of the left vertical frame (suming frame) 23 of the inner shoji 2. The airtight material s is in contact.
An opening prevention member 7 is provided between the left vertical frame 23 of the inner shoji 2 and the right vertical frame 34 of the outer shoji 3, and the indoor side surface of the right vertical frame (combined frame) 34 has fireproof performance. A crescent receiver 62 is provided.

As described above, in the resin sash of this embodiment, the upper, lower, left, and right frames are composed of substantially flat plate-shaped members and the upper and lower rail members. Since the upper and lower rail members can be arranged on the inner peripheral surfaces of the upper and lower frames and fixed to the opening of the building by fixing means such as screws, for example, fittings have already been constructed on the outdoor side. The construction can be easily performed by post-installation even for an opening of a building that has been installed, and the decrease in the opening area after construction can be suppressed to a small extent.

-Vertical frame reinforcement structure-
In the case of resin sashes, at the early stage of a fire, there is a risk that the vertical frame will melt due to the heat, making it impossible to hold the shoji, and the shoji will fall off the frame, accelerating the spread of the fire.
Therefore, in the resin sash of this embodiment, reinforcing members 8, 8 are arranged on the vertical frame to prevent the shoji from falling to the indoor side and the outdoor side, thereby suppressing the shoji from falling off in the event of a fire and improving the fire prevention performance. increasing.

Hereinafter, the vertical frame reinforcing structure of the resin sash of this embodiment will be described using the reinforcing member 8 of the right vertical frame 14 with reference to the drawings.

- 1st embodiment -
The reinforcing member 8 of this embodiment is made of a metal material such as steel or stainless steel, and as shown in FIGS. 81 and an out-of-plane member 82 .

In addition, the surface-outside member 82 is a member that is arranged on the interior side of the vertical frame 14 on the interior side of the room (outside in the out-of-plane direction) in the direction of projection on the inner peripheral surface of the room where the door frame 24 of the inner shoji 2 abuts. The center-side member 81 is a member arranged on the inner peripheral surface of the interior of the same room on the anti-interior side (central side) in the prospective direction.
For example, in the case of the right vertical frame 14 with which the inner shoji 2 abuts, the reinforcing member 8 has a center side member 81 arranged on the outdoor side and a surface side member 82 arranged on the indoor side. On the other hand, in the case of the left vertical frame 13 with which the outer shoji 3 abuts, the reinforcing member 8 has a center side member 81 arranged on the indoor side and an outside surface member 82 arranged on the outdoor side.

The center side member 81 is an elongated member having a length dimension covering substantially the entire length of the right vertical frame 14, and includes a projection wall 81a arranged on the inner peripheral surface of the right vertical frame 14 and a chamber of the projection wall 81a. It has an outdoor side (central side) facing wall 81b formed by bending the outer (central side) end to the inner peripheral side.

The surface outside member 82 is a long member having a length dimension of, for example, about 20 cm. It has an indoor side (plane outside) facing wall 82b which is bent.

The center side member 81 has a screw hole 81d, and the side member 82 has a long screw hole 82d. , constitutes a reinforcing member 8 having a substantially U-shaped cross section as a whole.
Since the screw hole of the surface outside member 82 is the long screw hole 82d, the expected width of the reinforcing member 8 can be adjusted.

Then, as shown in FIG. 4B, the projection wall 82a of the surface-side member 82 is placed on the outer peripheral side, and the projection wall 82a of the surface-side member 82 and the projection wall 81a of the center-side member 81 are overlapped to form the right vertical frame 14. It is arranged on the indoor side of the central wall portion 141b and fixed to the opening of the building together with the right vertical frame body portion 141a by fixing means such as screws.

An airtight piece 141e forming an airtight line between the door frame 24 of the inner shoji 2 is formed on the inner peripheral surface of the right vertical frame 14. A portion where 82 is arranged is removed by a notch or the like.

As shown in FIGS. 4(c) and 5(b), the reinforcing member 8 includes a projection wall 83a having a long dimension in the longitudinal direction on the outdoor side and a short dimension on the interior side and continuing in a stepped manner. An outdoor (central) side wall 83b formed by bending the outdoor side (central side) end of 83a to the inner peripheral side, and an indoor side (surface outer side) end of the projection wall 83a bent to the inner peripheral side. The reinforcing member 83 integrally formed with the indoor side (surface outside) side wall 83c may be used.

Screw holes 83d, 83d are provided at appropriate positions of the reinforcing member 83, and are fixed to the opening of the building together with the main body portion 141a of the right vertical frame 14 by fixing means such as screws.

As shown in FIG. 4(b), the central side member 81 or the reinforcing member 83 fixed to the right vertical frame 14 has the outdoor side and outdoor side (central side) side walls 81b, 83b of the projection walls 81a, 83a. A thermally expansive material f that expands when heated in the event of a fire may be placed in the .

According to the reinforcing member 8 of this embodiment, even if the right vertical frame 14 melts in the event of a fire, the inner periphery of the right vertical frame 14 faces the indoor side and the outdoor side of the door frame 24 of the inner shoji 2. Since the indoor side (surface outside) facing wall 82b and the outdoor side (central side) facing wall 81b remain so as to do so, the falling off of the inner shoji 2 to the indoor side and the outdoor side (especially the indoor side) is prevented. can be prevented.

Then, the indoor side (outer side) of the reinforcing member 8 is not provided over the entire length of the right vertical frame 14, but is formed only in a partial region in the longitudinal direction of the right vertical frame 14. Most of the airtight line between the frame 14 and the right vertical frame 24 of the inner shoji 2 is maintained except for the reinforcing member, and the deterioration of heat insulating performance can be suppressed.

- Second Embodiment -
The reinforcing member 8 of this embodiment is made of a metal material such as steel or stainless steel, and as shown in FIGS. , and the reinforcing member 8 of the first embodiment.
When the reinforcing member 8 of the present embodiment is arranged on the inner periphery of the right vertical frame 14, the airtight line (airtight piece 141e) is different from the first embodiment in that an airtight portion is provided.

Specifically, in the reinforcing member 8 of the present embodiment, an airtight portion 85a is formed by attaching a sponge member to the interior side of the projection wall 82a of the surface outside member 82 with double-sided tape or the like.

As shown in FIG. 7, the reinforcing member 8 fixed to the right vertical frame 14 with the screws b, b has an airtight portion 85a that is continuous with the airtight piece (airtight portion) 141e of the right vertical frame 14 and is airtight. line can be maintained.
Also in this embodiment, the reinforcing member 8 may be a reinforcing member 83 in which the central side member 81 and the surface side member 82 are integrally formed.

-Third Embodiment-
The reinforcing member 8 of this embodiment is made of a metal material such as steel or stainless steel, and as shown in FIG. It is common with the reinforcing member 8 of the embodiment, and is also common with the reinforcing member 8 of the second embodiment in that it has an airtight portion 85a.

The reinforcing member 8 of the present embodiment is an airtight portion (airtight line ) is formed of a mohair member.

Specifically, in the reinforcing member 8 of the present embodiment, the airtight portion 85a is formed by attaching a mohair member to the interior side of the projection wall 82a of the surface outer member 82 with double-sided tape or the like.
Also in this embodiment, as shown in FIG. 8B, the reinforcing member 8 may be a reinforcing member 83 in which a central side member 81 and a surface side member 82 are integrally formed.

As shown in FIG. 9, the reinforcing member 83 fixed to the right vertical frame 14 with the screws b, b has an airtight portion 85a that is continuous with the airtight piece (airtight portion) 141e of the right vertical frame 14 and airtight. line can be maintained.

As described above, in the resin sash according to the present embodiment, the reinforcing member having the indoor side wall and the outdoor side wall facing the indoor side and the outdoor side of the door frame of the shoji is provided on the inner circumference of the vertical frame. Since it is arranged, even if the resin part of the vertical frame melts in the event of a fire, it is possible to prevent the shoji from falling off to the indoor side and the outdoor side.

In addition, in the reinforcing member, by forming the region including the airtight line between the vertical frame and the vertical frame relatively short in the longitudinal direction of the vertical frame, most of the airtight line can be maintained, and the deterioration of heat insulation performance can be prevented. can be suppressed.

Furthermore, by forming an airtight portion along the airtight line of the reinforcing member, the airtight line between the vertical frame and the vertical stile can be maintained, and heat insulation performance can be maintained while improving fireproof performance. .

Although the reinforcing member for the vertical frame of the resin sash according to the present embodiment is described using the reinforcing member arranged on the right vertical frame, the reinforcing member may be arranged on the inner circumference of the left vertical frame.
In that case, the reinforcing member is provided on the outdoor side of the central wall portion 131b of the left vertical frame 13, and the indoor side wall and the outdoor side facing the indoor side and the outdoor side of the door frame 33 of the outside shoji 3 A reinforcing member having a facing wall may be arranged, and may be arranged so as to be point symmetrical with respect to the reinforcing member arranged on the right vertical frame 14 .

In addition, it goes without saying that the above embodiments do not limit the invention described in the claims, but are treated as examples.

8: Reinforcement member 14: Right vertical frame 141e: Airtight piece (airtight portion)
24: Right vertical frame (door frame)
81: outdoor member 81a: projection wall 81b: outdoor exterior wall 82: indoor member 82a: projection wall 82b: indoor interior wall 83: reinforcing member 83a: projection wall 83b: outdoor exterior wall 83c: room Inner side wall 85a: Airtight portion

Claims (2)

Equipped with a resin frame and a resin shoji,
The frame has a reinforcing member made of a metal material on the inner peripheral surface of the vertical frame,
The reinforcing member is a resin sash having a projection wall and an interior wall facing the interior side surface from the outer peripheral surface of the door frame of the inner shoji when the shoji is closed. Equipped with a resin frame and a resin shoji,
The frame has a reinforcing member made of a metal material on the inner peripheral surface of the vertical frame,
The reinforcing member is a resin sash having a projection wall facing the outdoor side surface from the outer peripheral surface of the door frame of the outside shoji and an outdoor side facing wall when the shoji is closed.

Images