JP7228734B2 - Fittings - Google Patents

Description

The present invention relates to a sash arranged in an opening of a building or the like.

BACKGROUND ART Conventionally, a sash provided with a resin frame and a resin frame having high heat insulating properties is known as a sash arranged in an opening of a building.

JP 2016-108909 A

The resin sash disclosed in Patent Literature 1 can have high heat insulating properties by taking advantage of the characteristics of the resin material, but has one aspect of being vulnerable to fire and heat.
However, in recent years, even heat insulating sashes having portions made of resin materials are required to have high fireproof performance.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sash having high fireproof performance as well as heat insulating performance.

In one embodiment of the present invention, a reinforcing member is arranged between the door rollers of the lower stile, the reinforcing member has a lower projection wall facing the lower rail, and is positioned at the left and right door rollers of the lower stile. The fitting has a thermal expansion refractory material in the longitudinal direction of the lower stile so as to reach the lower position of the projection wall below the reinforcing member , and the upper end of the door roller is positioned above the reinforcing member .

According to this embodiment, it is possible to impart fireproof performance to a sash having a member made of a resin material while maintaining heat insulating performance.

It is an outline view of a sash concerning one embodiment. Fig. 4 is a vertical cross-sectional view of the sash according to one embodiment in an attached state; It is a cross-sectional view in the attachment state of the sash which concerns on one Embodiment. 1 is a vertical sectional view of a sash according to one embodiment; FIG. 1 is a cross-sectional view of a sash according to one embodiment; FIG. FIG. 4 is an enlarged view of the lower frame of the sash according to one embodiment; It is an enlarged view of the lower frame of the sash according to one embodiment at the time of fire. It is an enlarged view of the lower frame of the sash which concerns on other embodiment. It is an enlarged view at the time of fire of the lower frame of the sash which concerns on other embodiment. (a) is an enlarged front view of a lower frame of a sash according to another embodiment, and (b) is an enlarged front view of the lower frame of a sash according to another embodiment in fire.

A sash according to an embodiment of the present invention will be described with reference to the drawings.
The sash of this embodiment is configured as an inner window A that is arranged on the indoor side of a window device that is arranged at the opening of a building. It is provided with an inner shoji 20 and an outer shoji 30 which are slidably arranged.

The frame body 10 has an upper frame 11, a lower frame 12 and left and right vertical frames 13 and 14, and each frame member is not framed, and the upper frame 11, the lower frame 12 and the left and right vertical frames are assembled. The frames 13 and 14 are fixed to the inner peripheral surface of the opening of the building by fixing means such as screws to form a frame 10 that extends around the opening of the building on all four sides.

The inner shoji 20 is formed by assembling an upper frame 21, a lower frame 22, a left vertical frame (suming frame) 23 and a right vertical frame (door frame) 24, and attaching a panel body 25 to the inner periphery thereof. The outer shoji 30 is composed of an upper frame 31, a lower frame 32, a left vertical frame (door frame) 33 and a right vertical frame (door frame) 34, and a panel body 35 is attached to the inner periphery thereof. formed by

2 and 3, the inner window A of the present embodiment is arranged on the indoor side of the fitting B that has been arranged in advance at the opening of the building, for example, it is fixed to the inner circumference of the forehead C. By doing so, it is possible to construct a double sash and improve the insulation performance at the opening of the building. The fittings B arranged at the opening of the building may be any fittings, and the description thereof is omitted here.

(Configuration of frame)
As shown in FIG. 4, the upper frame 11 of the frame body 10 has a substantially flat plate-like upper frame main body 111 made of a resin material and an upper rail member 112 made of a metal material such as an aluminum alloy. Then, with the upper rail member 112 arranged on the inner peripheral surface (lower surface) of the upper frame body 111, the upper frame body 111 and the upper rail member 112 are fixed to each other by fixing means b such as screws to the forehead portion C of the building opening. is fixed to the inner peripheral surface (lower surface) of the

The upper frame main body 111 has an upper frame main body portion 111a fixed to the forehead portion C, and an indoor side wall portion 111b hanging down 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 forehead portion C together with the upper frame main body 111, an upper inner rail 112b vertically provided below 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.
A wind stop member having a fin-shaped wind stop part between the upper inner rail 112b and the upper outer rail 112c of the upper frame 11 and above the joint frame 23, 34 of the inner shoji 20 and the outer shoji 30. 71 are placed.

As shown in FIG. 4, the lower frame 12 of the frame 10 has a substantially flat plate-like lower frame main body 121 made of resin material and a lower rail member 122 made of metal material such as aluminum alloy. Then, with the lower rail member 122 arranged on the inner peripheral surface (upper surface) of the lower frame main body 121, the lower frame main body 121 and the lower rail member 122 are secured to the frame portion C of the building opening by fixing means b such as screws. is fixed to the inner peripheral surface (upper surface) of the

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 that is fixed to the forehead portion C together with the lower frame body 121, a lower inner rail 122b that stands above 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 20 and the outer shoji 30. 72 are arranged.

The left and right vertical frames 13 and 14 of the frame 10 are made of a resin material, and as shown in FIG. It is fixed to the inner peripheral surface of the part C.
The left and right vertical frames 13 and 14 of this embodiment may be made of a resin material like the upper and lower frames 11 and 12, but the surfaces of extruded sections such as aluminum alloy may be replaced with a heat insulating material such as synthetic resin. may be formed by coating with

The left and right vertical frames 13 and 14 extend from the left and right vertical frame main bodies 131a and 141a fixed to the opening of the building, and the left and right vertical frame main bodies 131a and 141a from approximately the center position in the prospective direction to the inner peripheral direction. Center wall portions 131b and 141b protruding, indoor side wall portions 131c and 141c protruding in the inner peripheral direction from the room-side ends of the left and right vertical frame body portions 131a and 141a, and left and right vertical frame body portions. It has outdoor side wall portions 131d and 141d projecting in the inner circumferential direction from the outdoor side ends of 131a and 141a.

The central wall portions 131b and 141b have fin-like airtight pieces extending to both the indoor and outdoor sides at the inner peripheral ends. When the inner shoji 20 or the outer shoji 30 is closed, the fin-shaped airtight pieces come into contact with the door frames 24 and 33 of the inner and outer shoji 20 and 30 to prevent the inner and outer shoji 20 and 30 from closing. The shoji 20 and the right vertical frame 14 are airtight, and the outer shoji 30 and the left vertical frame 13 are airtight.

The left vertical frame 13 has a reinforcing member 132 made of a metal material 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. A reinforcing member 142 made of a metal material is provided on the inner peripheral surface of the portion 141a and on the interior side of the central wall portion 141b.

The reinforcing member 132 of the left vertical frame 13 is made of a metal material such as aluminum alloy or steel, and has a side wall along the outside surface of the central wall portion 131b and a projection wall along the inner peripheral surface of the left vertical frame body portion 131a. It is an elongated member having a substantially L-shaped cross section and is arranged over the entire length of the left vertical frame 13 .
The reinforcing member 142 of the right vertical frame 14 is made of a metal material such as aluminum alloy or steel, and has a side wall along the interior side surface of the central wall portion 141b and a projection wall along the inner peripheral surface of the right vertical frame body portion 141a. It is an elongated member having a substantially L-shaped cross section and is arranged over the entire length of the right vertical frame 14 .

A thermal expansion refractory material f is arranged on the outdoor side of the facing wall of the reinforcing member 132 of the left vertical frame 13 so as to face the indoor side of the door tip of the door frame 33 of the outside shoji 30, A thermal expansion fireproof material f is arranged on the indoor side surface of the front wall of the reinforcing member 142 of the right vertical frame 14 so as to face the outdoor side surface of the door end portion of the door frame 24 of the inner shoji 20 .

The reinforcing members 132, 142 arranged on the left and right vertical frames 13, 14 are fixed together with the left and right vertical frame main bodies 131a, 141a by fixing means b, b for fixing the left and right vertical frames 13, 14 respectively. fixed in the opening.

When fixing the frame 10 of the sash of the present embodiment to the building opening, 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. 4, the upper frame 21 of the inner shoji 20 has an upper frame main body 211 made of a resin material and a reinforcing core 212 made of a metal material such as an aluminum alloy.

The upper frame main body 211 has a glass frontage 211a for holding the panel body 25, and an opening 211b formed on the outer peripheral side of the glass frontage 211a and guided by the upper inner rail 112b. An airtight piece is provided at the upper end of the outer wall to contact or be close to the upper inner rail 112b.

In the upper frame 21 of the inner shoji 20, a reinforcing member 213 made of a metal material such as steel is arranged in the glass frontage 211a. It is held in the glass frontage 211a. A reinforcing core member 212 is arranged in the opening 211b.
The reinforcing core member 212 arranged in the opening 211b and the reinforcing member 213 arranged in the glass frontage 211a are connected by a connecting means with the bottom wall of the opening 211b interposed therebetween.

The reinforcing member 213 arranged in the glass frontage 211a has a substantially U-shaped cross section having a bottom wall facing the end surface of the panel body 25 and an indoor outer wall facing the indoor and outdoor side surfaces of the edge portion of the panel body 25. A thermally expandable refractory material is attached to the inner surface of the outer wall of the room.

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

Thermal expansion refractory materials are arranged on the upper and lower surfaces of the bottom wall portion 212a of the reinforcing core member 212, respectively, and thermal expansion refractory materials f, f are arranged on the inner surfaces near the upper ends of the interior wall portion 212b and the exterior wall portion 212c. It is

As shown in FIG. 4, the lower frame 22 of the inner shoji 20 includes a lower frame main body 221 made of a resin material, and a first reinforcing core material 222 and a second reinforcing core material 222 made of a metal material such as an aluminum alloy. 2 has a reinforcing core 223 .

The lower sill main body 221 has a glass frontage 221a on the inner peripheral side, a hollow portion 221b arranged on the outer periphery of the glass frontage 221a, and an opening 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.

The glass frontage 221a is made of a metal material such as steel, and has a substantially U-shaped cross section having a bottom wall facing the end face of the panel body 25 and an indoor outer wall facing the indoor and outdoor side surfaces of the edge of the panel body 25. A fourth reinforcing member 227 is arranged, and the panel body 25 is held in the glass frontage 221 a via the fourth reinforcing member 227 and the flame-retardant glazing channel 229 .
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 glass frontage 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.
A door roller 92 running on the lower inner rail 122b is arranged at a predetermined position of the opening 221c of the lower stile body 221, specifically at a position near both ends in the viewing direction, and the inner shoji 20 is arranged on the lower inner rail 122b. are arranged so that they can move freely.

As shown in FIG. 5, 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 glass frontage 241a for holding the panel body 25 formed on the inner peripheral side.
The right vertical frame 24 of the present embodiment may be formed by coating the surface of an extruded shape member such as aluminum alloy with a heat insulating material such as synthetic resin.

Inside the hollow portion of the right vertical frame main body portion 241b, a first reinforcing member 242 made of a metal material such as steel and having a substantially U-shaped cross section and having a projection wall, an interior side wall, and an exterior side wall is provided on the outer peripheral side. It is arranged so as to open toward the
Thermal expansion refractory material f are placed.
A thermal expansion fireproof material f is arranged between the inner peripheral surface (outer surface) of the projection wall of the first reinforcing member 242 and the right vertical frame main body 241 .

Inside the glass frontage 241a, there is a bottom wall made of a metal material such as steel that faces the end face of the panel body 25, and an interior wall that faces the interior and exterior sides of the edge of the panel body 25. Two reinforcing members 243 are arranged, and the panel body 25 is held in the glass frontage 241 a via the second reinforcing member 243 and the flame-retardant glazing channel 249 .

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 main body portion 241b interposed therebetween.
Note that the first reinforcing member 242 arranged in the hollow portion of the right vertical frame main 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 20 is made of a resin material, and as shown in FIG. It has a formed glass frontage 231a, and an airtight piece 231c is formed on the outer peripheral side surface thereof so as to abut or approach the door frame 34 of the outside shoji 30. As shown in FIG.
A fire prevention crescent lock 61 is attached to the outer peripheral surface of the left vertical stile 23 .

In the hollow portion of the left vertical frame body portion 231b, there are a projection surface portion on the inner peripheral side along the bottom wall of the glass frontage 231a made of a metal material such as steel, a viewing surface portion along the outdoor side surface of the left vertical frame body portion 231b, and an outer periphery. A first reinforcing member 232 having a fixed wall formed by bending the inner side prospective surface portion and the inner peripheral side prospective surface toward the outer peripheral side, and a second reinforcing member fixed to the fixed wall of the first reinforcing member 232. 233 and a fourth reinforcing member 235 having a substantially L-shaped cross section are arranged.

On the other hand, in the glass frontage 231a, a third reinforcing member 234 having a substantially U-shaped cross section having a bottom wall facing the end face of the panel body 25 and an indoor wall facing the indoor and outdoor side surfaces of the edge of the panel body 25 is provided. The third reinforcing member 234 is arranged so as to open toward the inner peripheral side, and the thermal expansion fireproof material f is arranged on the inner wall of the third reinforcing member 234 . The panel body 25 is held in the glass frontage 231 a via the third reinforcing member 234 and the flame-retardant glazing channel 239 .

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 fireproof material f interposed therebetween. Also, the thermally expandable fireproof material f is arranged at appropriate portions of the first reinforcing member 232 , the second reinforcing member 233 and the fourth reinforcing member 235 .
The panel body 25 used for the inner shoji 20 is made of fire-resistant and heat-resistant glass, such as crystallized glass.

(Composition of outside shoji)
The outer shoji 30 will be described below, but since the outer shoji 30 and the inner shoji 20 basically have the same configuration in terms of the upper and lower frames and the door frame, the outer shoji 30 will be particularly described here. The interlocking frame 34 will be described, and the description of the configuration similar to that of the inner shoji 20 will be omitted.

The right vertical frame 34 of the outer shoji 30 is made of a resin material, and as shown in FIG. An airtight piece 341c is formed on the outer peripheral side surface to abut or approach the door frame 23 of the inner shoji 20. As shown in FIG.
A fire prevention crescent receiver 62 is provided on the indoor side surface of the right vertical frame (summer frame) 34 .

In the hollow part of the right vertical frame main body portion 341b of the right vertical frame (summing frame) 34, there are a projection surface portion along the bottom wall of the glass frontage 341a made of a metal material such as steel, and an indoor side surface of the right vertical frame main body portion 341b. A first reinforcing member 342 is arranged which has a viewing surface along the line and a viewing surface on the outer peripheral side.

Inside the glass frontage 341a, a second reinforcing member 343 having a substantially U-shaped cross section having a bottom wall facing the end surface of the panel body 25 and an indoor outer wall facing the indoor and outdoor side surfaces of the edge portion of the panel body 25 is provided on the inner periphery. The second reinforcing member 343 is arranged so as to open toward the side, and a thermal expansion fireproof material is arranged on the inner wall of the second reinforcing member 343 . The panel body 35 is held in the glass frontage 341 a via the second reinforcing member 343 and the flame-retardant glazing channel 349 .

The first reinforcing member 342 and the second reinforcing member 343 are connected by connecting means with the inner peripheral wall of the right vertical frame main body portion 341b and the thermal expansion refractory material interposed therebetween. A thermal expansion fire-resistant material f that expands when heated in the event of a fire is arranged on the outdoor side (inner side) of the facing surface of the first reinforcing member 342 .

The fire prevention structure between the lower frame and the lower stile of the fittings of this embodiment will be described in more detail.
As shown in FIG. 6, the lower frame 12 constituting the frame body 10 is formed by arranging a lower rail member 122 made of a metal material on the inner periphery of a lower frame main body 121 made of a resin material. is movably mounted on the lower inner rail 122b of the lower rail member 122. As shown in FIG.

On the other hand, the lower frame 22 of the inner shoji 20 is formed by inserting a plurality of reinforcing members made of a metal material into a lower frame body 221 made of a resin material.
The lower frame main body 221 has an inner glass frontage wall 221d made of a hollow wall on the inner circumference of the room, and an outer glass frontage wall 221e made of a hollow wall on the inner circumference of the room. A glass frontage 221a is formed by 221e.

A fourth reinforcing member 227 having a substantially U-shaped cross section and having a bottom wall and an inner and outer wall is arranged in the glass frontage 221a over the longitudinal direction. A channel 229 is provided. A thermal expansion refractory material f is provided on the upper surface of the bottom wall of the fourth reinforcing member 227 .

The lower frame main body 221 has a hollow portion 221b on the outer peripheral side of the glass frontage 221a. In the hollow portion 221b, a first reinforcing core member 222 having a hollow shape is arranged along the longitudinal direction. A first reinforcing member 224 is arranged in the hollow portion of the material 222 .

Further, the lower frame main body 221 has an indoor side wall portion 221f extending downward from the indoor side on the further outer peripheral side of the hollow portion 221b, and has an outdoor side wall portion 221g extending downward from the outdoor side. An opening 221c is formed by 221f and the outdoor side wall 221g.

The lower frame main body 221 has a second reinforcing core member 223 arranged in the longitudinal direction between door rollers 92 arranged in the vicinity of both ends in the opening 221c. The second reinforcing core member 223 has a hollow portion 223a, an indoor side wall portion 223b extending downward from the indoor side of the hollow portion 223a, and an outdoor side wall portion 223c extending downward from the outdoor side of the hollow portion 223a. A lower opening 223d is formed by 223b and the outdoor side wall 223c.

Note that the second reinforcing core member 223 has a bottom wall of a hollow portion 223a in the vicinity of both ends that is notched, and door rollers 92 are arranged in the notched portions.

A second reinforcing member 225 is arranged in the hollow portion 223a of the second reinforcing core member 223, and a third reinforcing member 226 is arranged in the lower opening portion 223d. Connected by connecting means.

The third reinforcing member 226 arranged in the lower opening 223d of the second reinforcing core member 223 is an upper projection wall 226a, a lower projection wall 226b, and an outdoor side wall connecting the upper and lower projection walls 226a, 226b. It has a substantially U-shaped cross section with a wall 226c, and is arranged between door rollers 92 provided near both ends of the lower frame 22. As shown in FIG.
In the third reinforcing member 226, the thermal expansion refractory materials f1, f1 are arranged on the upper surface of the lower projection wall 226b and the indoor side surface of the outdoor exterior wall 226c.

In the third reinforcing member 226, a lower projection wall 226b is formed to have a smaller projection width dimension than an upper projection wall 226a. A gap s is formed between

The third reinforcing member 226 is arranged such that the lower surface of the third reinforcing member 226 is positioned above the lower ends of the indoor side wall portion 223b and the outdoor side wall portion 223c of the second reinforcing core member 223, and the lower projection wall The lower surface of 226b is arranged in the lower opening 223d of the second reinforcing core member 223 so as to face the lower inner rail 122b.
Therefore, at the lower end of the lower frame 22, a recessed portion surrounding the lower inner rail 122b is formed by the indoor side wall portion 223b and the outdoor side wall portion 223c of the second reinforcing core member 223 and the projection wall 226b below the third reinforcing member 226. ing.

In the event of a fire, as shown in FIG. 7, the thermally expandable refractory materials f1, f1 arranged on the upper surface of the projection wall 226b below the third reinforcing member 226 and the indoor side surface of the outdoor side wall 226c are broken into areas such as It expands like S1 and penetrates into the recess at the lower end of the lower frame 22 through the gap s formed between the room-side end of the lower projection wall 226b and the inner surface of the second reinforcing core member 223. The gap between the frame 22 and the lower inner rail 122b is closed.

As described above, the fittings of the first embodiment have an approximately U-shaped cross-sectional reinforcement having an upper projection wall, a lower projection wall, and a projection wall connecting the upper and lower projection walls between the door rollers of the lower stile. Since the member is arranged so that the lower projection wall faces the lower rail, even if the door roller made of synthetic resin melts in the event of a fire, the projection wall below the reinforcing member can be placed on the lower rail. It is possible to prevent the shoji from falling off.

In addition, by making the lower projection wall of the reinforcing member shorter than the upper projection wall and arranging the thermally expandable refractory material f1 inside the substantially U-shaped cross section of the reinforcing part, it is possible to expand due to heat in the event of a fire. The thermal expansion refractory material is made to overflow from the gap s between the lower projection wall and the inner peripheral surface of the lower stile, and the gap between the lower stile and the lower rail can be closed with the thermal expansion refractory material. Communication can be suppressed.

Normally, the thermally expandable refractory material provided on the lower stile is housed on the inner peripheral side of the substantially U-shaped cross-section reinforcing member disposed on the lower stile, and is not exposed to the lower surface of the lower stile. Deterioration of the thermal expansion refractory material due to ultraviolet rays or the like can be suppressed, and detachment can be prevented.

-Other embodiments-
A fire prevention structure between the lower frame and the lower stile of fittings according to another embodiment will be described.
It should be noted that a part of the description of the configuration similar to that of the fittings of the first embodiment will be omitted.

In a fitting of another embodiment, as shown in FIG. 8, thermal expansion refractory materials f2 and f3 are provided on the inner side surface of the lower end of the second reinforcing core member 223 (323) of the lower frame 22. As shown in FIG.
For the sake of explanation, the lower frame 22 of the inner shoji 20 in FIG. 8 shows a region (xx section in FIG. 10) where the third reinforcing member 226 does not exist, and the lower frame 32 of the outer shoji 30 in FIG. shows a region (yy section in FIG. 10) where the third reinforcing member 326 exists, and the door roller 92 is omitted.

In the event of a fire, as shown in FIG. 9, the thermally expandable refractory materials f2 and f3 arranged on the inner side surface of the lower end of the second reinforcing core member 223 (323) expand, for example, to regions S2 and S3, The gaps between the lower rails 22, 32 and the lower inner rail 122b and the lower outer rail 122c can be closed.

At this time, the thermally expandable refractory materials f2, f2 arranged in the region where the third reinforcing member 226 (326) does not exist are arranged such that the expanded region S2 wraps the lower part of the door roller 92 as shown in FIG. 10(b). and receive the door roller 92 melted by heat.

In addition, the thermal expansion refractory materials f3 and f3 arranged in the region where the third reinforcing member 226 (326) exists are expanded by the third reinforcing member 226 (326) as shown in FIG. 10(b). It is regulated and densely filled in the expansion region S3.

As described above, in the fitting of another embodiment, the reinforcing member is arranged between the door rollers of the lower stile so that the lower projection wall faces the lower rail. Since the thermal expansion refractory material is arranged over the area where the reinforcing member is arranged, the expansion of the thermal expansion refractory material is restricted by the projection wall below the reinforcing member in the event of a fire, and the thermal expansion refractory material is located between the lower stile and The space between the lower rails 22, 32 and the lower frame 12 can be reliably closed by densely filling with the lower frame.

Also, in the region where the reinforcing member is not arranged, the thermally expandable fireproof material is expanded by heat so as to envelop the door rollers that have been melted from below, preventing the melted resin material from leaking out from below the lower frame and igniting. be able to.
In other words, by using a single thermal expansion refractory material provided along the longitudinal direction of the lower stile, it is possible to form expansion regions with different densities suitable for the region where door rollers exist and those where door rollers do not exist, thereby improving fire prevention performance. can be enhanced.

In addition, although this embodiment is described as an inner window placed on the indoor side of a building opening with an existing sash placed on the outdoor side, it is adopted for a sash placed alone on the building opening. You can also

Furthermore, in the present invention, the configurations of the inner shoji and the outer shoji are not limited to the above embodiments, and any shoji can be used without changing the gist of the present invention.
In addition, the cross-sectional shape of the reinforcing member that reinforces the frame material of the shoji and the reinforcing core material is not limited to the cross-sectional shape shown in the embodiment. is also not limited.

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

10: frame 11: upper frame 12: lower frame 122: lower rail member 122b: lower inner rail 122c: lower outer rail 13: left vertical frame 14: right vertical frame 20: inner shoji 21: upper frame 22: lower frame 92 : door roller 221 : lower frame main body 221a : glass frontage 221b : hollow portion 221c : opening 221d : inner glass frontage wall 221e : outer glass frontage wall 221f : indoor side wall portion 221g : outdoor side wall portion 222 : first reinforcing core member 223 : Second reinforcing core member 224 : First reinforcing member 225 : Second reinforcing member 226 : Third reinforcing member 226a : Upper projection wall 226b : Lower projection wall 226c : Outdoor-side projection wall S1-S3: Expansion region f1- f3: Thermal expansion refractory material

Claims (1)

A reinforcing member is placed between the door rollers of the lower stile,
the reinforcing member has a lower prospective wall facing the lower rail;
A thermal expansion fireproof material is provided in the longitudinal direction of the lower stile so that it extends from the position where the door rollers on the left and right of the lower stile are located to the lower position of the projection wall below the reinforcing member ,
A fitting in which the upper end of a door roller is located above a reinforcing member .

Images