JP2018066243A - Fireproof sash - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a slide screen from descending by stably supporting the slide screen on a rail of a bottom frame even when a sash roller becomes melted during a fire, and to prevent the glass of the slide screen from being broken or coming off.SOLUTION: The sash comprises a frame body provided in an opening of a building and a slide screen provided inside the frame body so as to be freely opened and closed, the slide screen has a fall regulating member inside a guide groove in a lower rail of a lower stile 22 for preventing the slide screen from falling during a fire, and the fall regulating member includes external and internal projections on both ends in a face direction projecting downward along a guide rail.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a fire prevention fitting arranged in a building opening.

  Reinforcement provided on the lower arm of the shoji when the door wheel running on the rail is melted by heating at the time of fire in a joinery having a shoji that is freely slidable along the rail provided at the opening of the building The fitting which can suppress the fall of a shoji is known by mounting the support part of a material on a rail. (Patent Document 1).

JP2015-197003

  In the joinery of Patent Document 1, a support portion that is placed on the rail when the door is melted is formed by cutting and raising a part of the reinforcing member disposed in the lower rail housing groove of the lower arm of the shoji. Because the lower end is formed on a straight line, it will not be stable when placed on the rail, and the shoji will fall to the inside or outside of the room, causing the glass to break or the shoji to come off. There was a possibility.

  In view of the circumstances described above, the present invention stably supports the shoji on the rail of the lower frame to prevent the shoji from falling even if the door is melted in the event of a fire, and the glass of the shoji is broken or detached. The purpose is to prevent.

  The present invention includes a frame disposed in a building opening, and a shoji that can be freely opened and closed in the frame, and the shoji prevents the shoji from falling in a guide groove of a lower rail of a lower arm in the event of a fire. The lowering restricting member is characterized in that the lowering restricting member is provided with inner protrusions and outer protrusions protruding downward along the guide rails at both ends in the finding direction.

  According to the configuration of the present invention, when the door roller is melted in the event of a fire, the shoji can be stably placed on the lower rail, and it is long that the shoji descends greatly to break the glass or to remove the shoji. It can be suppressed over time.

It is a longitudinal cross-sectional view of the fire protection sash which concerns on embodiment of this invention. It is a cross-sectional view of a fire protection sash according to an embodiment of the present invention. It is an expanded vertical sectional view in the normal time of the lower frame part of the fire protection sash which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure for demonstrating the reinforcement member arrange | positioned at the sumo gutter of the external shoji of the fire protection sash which concerns on embodiment of this invention, (a) is a cross-sectional view of a shout child sumo gutter, (b) is reinforcement. The side view of a member, (c) is a top view of the lower end cap attached to the lower end of a shoji sumo wrinkle, (d) is a cross-sectional view of the outer shoji summon cage with the lower end cap attached. It is a figure for demonstrating the fall control member used for the shoji of the fire protection sash which concerns on embodiment of this invention, (a) is a perspective view of a fall control member, (b) is the same sectional view, (c) is the same The top view seen from the lower part, (d) is a perspective view of the state attached to the lower arm of a shoji. It is a figure for demonstrating the fall restricting member of the fire protection sash which concerns on embodiment of this invention, (a) is a longitudinal cross-sectional view of a lower frame and a lower collar part of a normal state, (b) is FIG. The enlarged longitudinal cross-sectional view of the area | region A of a), (c) is the expanded longitudinal cross-sectional view of the area | region A of the state which the door pulley melt | dissolved at the time of a fire. It is a figure for demonstrating the fall prevention metal fitting of the fire protection sash which concerns on embodiment of this invention, (a) is a longitudinal cross-sectional view of a lower frame and a lower collar part of a normal state, (b) is FIG. The enlarged longitudinal cross-sectional view of the area | region B of a), (c) is an expanded longitudinal cross-sectional view of the area | region B of the state which the door pulley melt | dissolved at the time of a fire.

A fire protection sash according to an embodiment of the present invention will be described with reference to the drawings.
(Overall configuration)
The fire protection sash according to the embodiment of the present invention is installed in a building opening, and as shown in FIGS. 1 and 2, a frame formed by assembling an upper frame 11, a lower frame 12, and left and right vertical frames 13 and 14 around four sides. The body 1, the upper collar 21, 31, the lower collar 22, 32, the left longitudinal collar 23, 33, and the right longitudinal collar 24, 34 are assembled around the four circumferences, and the panel body is fitted into the inner circumference. , 3 and is formed as a sliding sash by supporting the inner and outer obstacles 2 and 3 movably in the left-right direction along the outer guide rail formed in the frame 1.
The fireproof sash according to the present invention is not limited to the sliding sash, and any type of sash may be used as long as the shoji can be opened and closed with respect to the window frame, such as a single sliding window.

(Frame structure)
As shown in FIG. 1, the upper frame 11 constituting the frame 1 includes an outdoor upper member 111 formed of a metal material such as aluminum and having a hollow portion, and an indoor upper member formed of a metal material such as aluminum. 112, a connecting member 113 formed of a heat insulating material such as a resin for connecting the outdoor upper member 111 and the indoor upper member 112, and a resin material disposed and fixed on the inner periphery of the lower surface of the indoor upper member 112. It is comprised by the resin upper member 114 made.
An outer guide rail 111a for guiding the outer shoji 3 is suspended from the lower surface of the outdoor upper member 111 which is closer to the outdoor side, and the inner shoji 2 is guided to the lower surface of the outdoor outer end portion of the indoor upper member 112. The inner guide rail 112a is suspended.

  The resin upper member 114 includes an outdoor wall portion 114a that covers the indoor surface of the inner guide rail 112a of the indoor upper member 112, an upper wall portion 114b that covers the lower surface of the indoor upper member 112, and an indoor side end of the upper wall portion 114b. Is formed from an indoor wall portion 114c that hangs downward and a forehead portion 114d in which the lower end of the indoor wall portion 114c extends to the indoor side, so that the indoor upper member 112 directly enters the indoor space. Preventing exposure.

A windshield plate (not shown) is disposed between the outer guide rail 111a and the inner guide rail 112a of the upper frame 11 at a position above the summing portion of the inner and outer children 2 and 3. A resin upper cover member 51 that covers the lower surface of the outdoor upper member 111 of the upper frame 11 is disposed between the upper frame 11 and the left vertical frame 13, that is, on the indoor side of the outer screen 3 in the closed state.
The upper cover member 51 prevents cold heat from being directly transmitted into the room from the lower surface of the outdoor upper member 111 on the indoor side of the outer obstacle 3 when the inner and outer obstacles 2 and 3 are closed. A movable piece 51a extending in an inclined state toward the lower side on the indoor side is arranged on the lower surface on the outdoor side of the upper cover member 51.

  The lower frame 12 constituting the frame body 1 is formed of a metal material such as aluminum and has a lower frame body 121 in which outer guide rails 121a and 121b are provided on the upper surface, and a chamber for the outer guide rail 121b of the lower frame body 121. A chamber of the lower frame auxiliary member 122 arranged outside, the lower frame rail auxiliary member 123 arranged between the outer guide rails 121a and 121b in the lower frame main body 121, and the inner guide rail 121a of the lower frame main body 121. A resin lower member 124 made of resin is disposed and fixed inside.

As shown in FIG. 3, the lower frame body 121 has an outdoor portion 121c formed by a hollow portion 12a, and an outdoor member 121c extending upward after extending from the outdoor surface of the hollow portion 12a to the outdoor side. The lower frame auxiliary member 122 is disposed above the outdoor member 121c.
Between the lower frame auxiliary member 122 and the outer guide rail 121b, there is formed a guide groove 12c into which the outdoor hanging piece 321b hanging from the lower outside edge of the lower arm 32 of the shoji 3 is slidably inserted in the direction of finding. Has been.

Of the lower frame body 121, the lower frame rail auxiliary member 123 disposed between the outer guide rails 121a and 121b has a substantially U-shaped cross section that opens downward, and expands on the outdoor side surface and the upper surface during a fire. A heating expansion material f is arranged. A resin cover member 125 is disposed on the upper surface of the lower frame rail auxiliary member 123.
The estimated size of the lower frame rail auxiliary member 123 is set to be smaller than the distance between the inner and outer guide rails 121a and 121b, and the inner frame is between the lower frame rail auxiliary member 123 and the inner guide rail 121a. A guide groove 12b is formed in which an outdoor hanging piece 221b that hangs down at the outdoor lower end of the two lower rods 22 is slidably inserted in the direction of finding.

  The resin lower member 124 disposed on the indoor side of the inner guide rail 121a of the lower frame main body 121 hangs down from the upper wall portion 124a constituting the indoor upper surface of the lower frame 12 and the outdoor end portion of the upper wall portion 124a. The outdoor leg portion 124b, the indoor leg portion 124c hanging from the lower surface on the indoor side of the upper wall portion 124a, and the jaw portion 124d extending to the indoor side of the upper wall portion 124a, are locked to the indoor side of the inner guide rail 121a. Thus, the inner peripheral surface of the inner guide rail 121a of the lower frame main body 121 is covered. On the lower surface of the upper wall portion 124a of the resin lower member 124, a heat expansion material f that expands in the event of a fire is disposed.

The inner guide rail 121a that guides the inner shoji 2 and the outer guide rail 121b that guides the outer shoji 3 are provided with an airtight material holding groove that opens toward the outdoor side and holds the airtight material s in the upper portion of the outdoor side surface. The upper walls 121d and 121e are formed wide above the airtight material holding grooves, and the guide strips 121f and 121g for guiding the shojis 2 and 3 are projected from the upper surface.
Of the lower frame main body 121, the upper walls 121 d and 121 e of the outer guide rails 121 a and 121 b, the upper surface of the lower frame auxiliary member 122, and the resin cover member 125 disposed on the upper surface of the lower frame rail auxiliary member 123. By setting the upper surface and the upper surface of the resin lower member 124 to have substantially the same height, the upper surface of the lower frame 12 is formed to have a substantially flat shape.

As shown in FIG. 2, the left vertical frame 13 is formed of a metal material such as aluminum, and the drawing block d disposed on the door rod (left vertical rod) 33 of the outer screen 3 abuts on the inner peripheral surface. The main body member 131 provided with the attracting piece 131a and the resin left member 132 disposed and fixed on the inner peripheral surface on the indoor side of the main body member 131 are provided.
The resin left member 132 includes a main body portion 132a that is engaged with the main body member 131 and covers the inner peripheral surface on the indoor side of the left vertical frame 13, and a forehead portion 132b that extends to the indoor side of the main body portion 132a. The main body portion 132a has mounting recesses 132c that open in the inner circumferential direction at a plurality of positions in the vertical direction, and the bottom wall of the mounting recess 132c is superposed on the main body member 131. By fixing at a plurality of locations from the inner peripheral side with the fixing means b, the fixing means b is firmly attached to the opening of the building.
The mounting recess 132c is fitted with a resin cap 132d, so that the cold heat transmitted to the fixing means such as screws via the body member 131 of the left vertical frame 13 made of aluminum or the like is transmitted into the room. This suppresses the deterioration of the design due to the head of the fixing means b such as a screw being exposed to the room.
In addition, you may comprise the attachment recessed part 132c as a groove part which continues in the longitudinal direction (up-down direction) of the resin left member 132. FIG.

The right vertical frame 14 is formed of a metal material such as aluminum, and a pulling piece 141a with which a pulling block d disposed on a door rod (right vertical rod) 24 of the inner shoji 2 contacts is provided on the inner peripheral surface. The main body member 141 and the resin right member 142 disposed and fixed on the inner peripheral surface on the indoor side of the main body member 141 are configured.
The resin right member 142 includes an attachment portion 142a engaged with the main body member 141, an indoor wall portion 142b extending in the inner circumferential direction from the indoor side end of the attachment portion 142a, and an indoor side from the inner peripheral side end of the indoor wall portion 142b. It is composed of a forehead portion 142c that extends to the main body member 141, and is fixed at a plurality of locations from the inner periphery side by means of fixing means b such as screws that penetrate both of them. It is firmly attached to the opening.

(Composition of shoji)
As shown in FIG. 1, the upper collar 21 of the inner shoji 2 is formed on a room-side upper collar 211 formed of a metal material such as aluminum and having a hollow portion 211 a and a resin material or the like and having a hollow portion 212 a. It is configured as a composite kite composed of the collar unit 212. A guide groove 21 a guided by an inner guide rail 112 a formed on the upper frame 11 is formed on the outer periphery of the outdoor upper collar portion 211, and the outdoor outer collar portion is disposed on the inner periphery of the upper collar 21. A panel opening 21b is formed by 211 and the indoor side upper collar 212.
An airtight material that is in contact with or close to the inner guide rail 112a is attached to the outdoor upper end and the indoor upper end of the guide groove 21a, so that the space between the upper frame 11 and the upper rod 21 is airtight. This prevents the outside air from entering the room directly between the upper surface of the upper frame 11 and the lower surface of the upper frame 11 to improve the heat insulating performance of the sash.
In addition, on the indoor side surface and bottom surface of the guide groove 21a, a heat expansion material that expands by heating is disposed.

The lower collar 22 of the inner shoji 2 is a composite collar composed of an outdoor lower collar 221 formed of a metal material such as aluminum and having a hollow portion 221a, and an indoor lower collar 222 having a hollow portion 222a formed of a resin or the like. A guide groove 22a is formed on the outer periphery of the lower rod 22, and a door wheel a running on the inner guide rail 121a formed on the lower frame 12 is disposed, and the inner periphery of the lower rod 21 In this case, a panel opening 22b is formed by the outdoor lower flange 221 and the indoor lower flange 222.
As shown in FIGS. 1 and 3, the outdoor side of the outdoor lower collar part 221 extends below the lower end of the door wheel a to form an outdoor hanging piece 221b. It is inserted into the guide groove 12b between the lower frame rail auxiliary member 123 and the inner guide rail 121a, and is in contact with the airtight material s disposed on the outdoor side surface of the inner guide rail 121a.

As shown in FIG. 2, the door toe cage (right vertical rod) 24 of the inner shoji 2 is formed of a metal material such as aluminum and has an outdoor door toe collar 241 having a hollow portion 241 a and a hollow formed from a resin or the like. It is comprised as a compound fence which consists of the indoor side door-end collar part 242 which has the part 242a.
A pulling block d that abuts on a pulling piece 141 a formed on the right vertical frame 14 is installed on the outer periphery of the door toe fence (right vertical fence) 24. A panel front opening 24b is formed around the periphery by the outdoor-side door-end flange 241 and the indoor-side door-end flange 242.
An airtight material that comes into contact with the attracting piece 141a when the inner shoji 2 is closed is attached to the outer peripheral end of the outdoor doorside collar 241. The sash is sealed between the right vertical frame 14 and the doorframe 24. The heat insulation performance is improved.

A summoning cage (left vertical gutter) 23 of the inner shoji 2 is an indoor summoning unit having a hollow portion 232a formed of a metal material such as aluminum and having a hollow portion 231a and a hollow portion 232a. It is made up of a collar part 232, and the indoor side summoning part 232 is engaged so as to cover the indoor side surface and the outer peripheral surface of the outdoor side summoning part 231, that is, the surface exposed to the room when the shoji is closed, as a composite saddle It is configured.
On the inner periphery of the summon bowl (left vertical bowl) 23, a panel opening 23 b is formed by an outdoor summit bowl 231 and an indoor summit bowl 232.
A crescent lock 81 is attached to the outer peripheral surface of the summon bowl (left vertical bowl) 23, and a smoke return piece is formed on the outdoor side face of the outdoor summit bowl 231. The smoke return c is configured in cooperation with the smoke return pieces formed on the 34 indoor side surfaces.

The external shoji 3 is different from the inner shoji 2 in the configuration of the sumo spear 34 (right vertical spade), and is otherwise substantially the same as the inner shoji 2, so only the summon spear 34 will be described. A description of the other shoji 3 is omitted.
The summon cage (right vertical rod) 34 of the external shoji 3 is formed of a metal material such as aluminum and has a hollow portion 34a, and a panel opening 34b is formed on the inner periphery of the hollow portion 34a.
An airtight material s that abuts the outer surface of the summon cage (left longitudinal rod) 23 of the inner shoji 2 is attached to the outer peripheral end of the indoor side surface of the summon cage (right longitudinal rod) 34. The heat insulation performance of the sash is improved by preventing the outside air from entering the room directly between the summon bowl 34 and the summon bowl 23 of the inner shoji 2.
In addition, a crescent receiver 82 is attached to the indoor side surface of the summon bowl (right vertical bowl) 34.

(Fireproof structure with reinforcing material)
In the fire protection sash of the present embodiment, the shape of the joinery is maintained in the hollow portion of the lower frame 12 where the weight of the joinery is applied, and in the hollow portion of the vertical fence material constituting the inner shoji 2 and the outer shoji 3, in the event of a fire. A reinforcing member is arranged. This will be described below.
-Bottom frame-
As shown in FIG. 3, in the hollow portion 12a of the lower frame 12, a reinforcing member 912 made of steel or aluminum alloy is fixed and arranged on the upper surface of the hollow portion 12a.
The reinforcing member 912 includes an upper wall portion 912a fixed to the upper surface of the hollow portion, an outdoor side wall portion 912b continuous to the outdoor side end of the upper wall portion 912a, and a bottom wall portion 912c continuous in the indoor direction from the lower end of the outdoor side wall portion 912b. And an indoor side wall portion 912d continuous downward from the indoor side end of the upper wall portion 912a. The indoor side surface above the outdoor side wall portion 912b and the outdoor side surface at the lower position are expanded by heating. The heating expansion material f is arranged so as to face the drainage channel and the like, and the communication of flames and smoke inside and outside the room is prevented by closing the drainage channel and the like in the event of a fire.
An auxiliary member 912e having a substantially L-shaped cross section is attached to the indoor side wall portion 912d, and a heating expansion material f that expands by heating is disposed on the upper surface of the auxiliary member 921e.

-Totochi-
As shown in FIG. 2, inside the hollow portions 241a and 331a of the outdoor doorside flange portions 241 and 331 of the doorside rods 24 and 33 of the inner and outer shoji 2, 3 are steel or aluminum alloy along the longitudinal direction. The reinforcing members 924 and 933 are arranged, and the glass slip-off preventing member made of a metal material and disposed in the panel opening 24b of the door toe cage 24 of the inner door 2 and the panel of the door toe 33 of the outer door 3 Each is fixed to a glass detachment preventing member made of a metal material disposed in the front opening 33b by a fixing means such as a screw.

-Summoning-
A reinforcing member 923 made of steel or aluminum alloy or the like and having a substantially U-shaped cross section is disposed along the longitudinal direction in the hollow portion 231a of the summon 23 of the inner shoji 2 with the opening facing the outdoor side. In addition, one side wall portion having a substantially U-shaped cross section is fixed to a glass detachment preventing member made of a metal material disposed in the panel opening 23b of the summing cage 23 of the inner shoji 2 by a fixing means such as a screw.
Further, a reinforcing member 934 made of steel or aluminum alloy or the like and having a substantially U-shaped cross section is disposed along the longitudinal direction in the hollow portion 34a of the summoning cage 34 of the external shoji 3 with the opening facing the indoor side. The inner peripheral side wall portion 934b having a substantially U-shaped cross section is fixed to a glass slip-off preventing member made of a metal material disposed in the panel opening 34b of the summoning cage 34 of the external shoji 3 by fixing means such as a screw. ing.
On the bottom surfaces of the reinforcing members 923 and 934, a heat expansion material f that expands in the event of a fire is disposed.

And the reinforcement member 934 arrange | positioned in the hollow part 34a of the summoning cage | basket 34 of the external shoji 3 is orient | assigned downward to the inner side lower end of the inner peripheral side wall part 934b, as shown to FIG. 4 (a), (b). A release stopper 934d is fixed so as to protrude.
As shown in FIGS. 4 (c), (d) and FIG. 7, a resin lower end cap 7 is attached to the lower end of the summon bowl 34 of the external shoji 3. The insertion hole 7a is formed.
The lower end of the locking member 934d fixed to the reinforcing member 934 is located below the lower surface of the resin lower end cap 7 attached to the lower end of the summing cage 34 of the external shoji 3, and the lower end cap 7 It protrudes downward from the formed insertion hole 7a.
The lower end of the stopper metal 934d protruding downward from the lower end cap is located above the upper end of the outer guide rail 121b in the normal state (FIGS. 7A and 7B).

-Shimojo-
As shown in FIG. 1, inside the upper hollow portions 221 a and 321 a of the outdoor outer lower flange portions 221 and 321 of the lower flanges 22 and 32 of the inner and outer obstacles 2 and 3 are made of steel or aluminum alloy along the longitudinal direction. The substantially U-shaped reinforcing member is disposed with the opening portion facing the indoor side, and the lower hollow portions 221b and 321b of the outdoor lower lower flange portions 221 and 321 are not located in the portion where the door wheel a does not exist. In addition, reinforcing members 922 and 932 having a substantially U-shaped cross section made of steel, aluminum alloy, or the like are disposed along the longitudinal direction with the opening portion facing the indoor side.

(Descent restriction member)
As described above, in the fire protection sash of the present embodiment, the reinforcing member is disposed in the hollow portion of the vertical frame of the lower frame 12 and the shoji 2 to maintain the shape of the shoji 2 and 3 in the event of a fire. This delays the communication of smoke and suppresses the spread of fire due to the communication of flames.
However, in recent fittings, a lot of resin members are used as members such as shoji doors from the viewpoint of weight reduction and heat insulation. There is a possibility that it may fall off and come off from the frame body, or even if it does not come off, it will be displaced to create a gap and spread.

Therefore, in the fire protection sash of the present embodiment, by placing the lower regulating member 6 in the guide grooves 22a, 32a of the lower collars 22, 32 of the inner and outer obstacles 2, 3, the inner and outer obstacles 2, 3 The inner and outer guide rails 121a and 121b are prevented from falling off, and the fireproof performance can be maintained over a long period of time.
This will be described below.

As shown in FIGS. 5 (a) to 5 (c), the lowering restricting member 6 is a short solid block member having a substantially rectangular cross section made of a metallic material. The outer protrusions 61 and 62 are formed along the inner and outer protrusions 61 and 62, and the concave rail mounting part 63 is formed between the inner and outer protrusions 61 and 62.
In addition, a fixing hole 6 a penetrating toward the other surface is formed at a substantially central position on one surface of the lowering restricting member 6.
And as shown in FIG.5 (d), it fixes to the vicinity of the door wheel a in the guide grooves 22a and 32a of the lower collars 22 and 32 by fixing means, such as a screw, via the fixing hole 6a by making one surface into a lower surface. Yes.

The operation of the lowering restricting member 6 will be further described using the lowering restricting member 6 disposed in the guide groove 32a of the lower collar 32 of the external shoji 3.
As shown in FIGS. 6A and 6B, the lowering restricting member 6 has inner and outer protrusions 61 and 62 projecting downward along the outer guide rail 121 b, and the rail mounting portion 63. Is arranged so as to face the guide strip 121g of the outer guide rail 121b.
Since the shoji is normally supported by the door wheel a, as shown in FIG. 6B, the lower end of the outer protrusions 61 and 62 of the lowering restricting member 6 is the guide strip 121g of the outer guide rail 121b. The lower regulating member 6 can travel smoothly on the outer guide rail 121b by the door wheel a without interfering with the outer guide rail 121b.
Further, when the door pulley a is melted in the event of a fire, as shown in FIG. 6C, the outer protrusions 61 and 62 of the lowering restricting member 6 are placed on the upper wall 121e of the outer guide rail 121b. As described above, the shoji can be prevented from greatly descending.
Here, since the reinforcing members 922 and 932 are disposed inside the lower hollow portions 221b and 321b of the lower rods 22 and 32 at a position above the fixed position of the lowering restriction member 6, the piece-shaped lowering restriction member 6 By receiving the force received by the lower rods 22 and 32 by the reinforcing members 922 and 932, the lower rods 22 and 32 are prevented from being crushed.

Then, as shown in FIG. 6B, the expected width dimension d2 of the upper wall 121e is lowered and formed larger than the interval d1 of the outer protrusions 61 and 62 in the restricting member 6, and FIG. As shown in FIG. 4B, the outer ridge 62 on the outdoor side is placed on the upper wall 121e in a state where the shoji is displaced to the outdoor side and the inner ridge 61 on the indoor side is in contact with the indoor side of the guide 121g. By setting the prospective direction width dimension d2 of the upper wall 121e so that it can be maintained, it is possible to further prevent the shoji from coming out to the outdoor side at least.
Further, by making the height of the inner and outer protrusions 61 and 62 substantially the same as the height of the guide 121g of the outer guide rail 121b, the inner and outer protrusions 61 and 62 are formed on the upper wall 121e. Since the rail mounting portion 63 is supported by the upper portion of the guide strip 121g in the supported state, the lowering restricting member 6 is always supported at two or more points with respect to the outer guide rail 121b. Can be supported.

  Further, in the state where the door pulley a is melted in the event of a fire and the lowering restricting member 6 disposed on the lower arm 32 is in contact with and supported by the outer guide rail 121b, as shown in FIG. The lower end of the locking bracket 934d fixed so as to protrude downward is positioned below the upper end of the outer guide rail 121b, and the lower rod 32 is prevented from moving to the outdoor side. It is possible to suppress deformation of the external shoji 3 and reliably prevent it from coming out of the outdoor side.

As described above, by arranging the regulating member to be lowered in the guide groove of the lower arm of the shoji, even if the resin door wheel a or the like melts at the time of a fire, the shoji can be prevented from greatly falling, and from the frame body It can be prevented from coming off.
And, on the lower surface of the lowering restricting member, an outer protruding portion is formed along the guide rail, and a concave rail mounting portion is formed between them, so that the shoji is placed on the upper surface of the guide rail. When placed, the inner and outer projecting portions can be prevented from moving indoors and outdoors, and can be prevented from falling off the guide rail.
In addition, the lowering restriction member is formed in a short block shape by aluminum extrusion or the like, so that it is placed in a line contact state over a predetermined range with respect to the guide rail, and the shoji is placed. As a result, the load is dispersed without concentrating on one point of the guide rail, and the mounting state with respect to the guide rail can be maintained for a relatively long time.

In the present embodiment, the lowering restricting member is preferably formed of a block-like metal material, but depending on the shape and structure of the rail portion of the joinery, a plate-like member such as steel or stainless steel is bent. As long as it has flame retardancy and can maintain the shape for a certain amount of time in the event of a fire, and can suppress the falling out of the shoji, the material and shape are not limited at all. .
Further, the present invention is not limited to the flat rail type sliding joinery employed in the above embodiment, and any joinery that is slidably disposed with respect to the rail formed on the lower frame. Any joinery may be used, and the construction of the joinery itself is not limited at all.

1: Frame 11: Upper frame 12: Lower frame 12a: Hollow portion 121: Lower frame body 121a: Inner guide rail 121b: Outer guide rail 121c: Outdoor member 122: Lower frame auxiliary member 123: Lower frame rail auxiliary member 124: Resin lower member 124a: Upper wall portion 124b: Outdoor leg portion 124c: Indoor side leg portion 124d: Jaw portion 124e: Locking piece 125: Resin cover member 13: Left vertical frame 14: Right vertical frame 2: Neck 21: Upper rod 22: Lower rod 22a: Guide groove 22b: Panel opening 221: Outdoor lower flange 221a: Hollow portion 221b: Outdoor hanging piece 222: Indoor lower flange 222a: Hollow portion 23: Left vertical rod ( Summon)
24: Right vertical gutter (toe gutter)
3: External shoji 31: Upper arm 32: Lower arm 32a: Guide groove 33: Left vertical arm (door toe)
33b: Panel front door 331: Outdoor door toe part 331a: Hollow part 34: Right vertical fence (summit bowl)
34a: Hollow portion 34b: Panel opening 6: Lowering restriction member 6a: Fixing hole 61: Inner protrusion 62: Outer protrusion 63: Rail mounting portion 81: Crescent lock 82: Crescent receiver 934: Reinforcing member 934b: Inner Peripheral side wall portion 934d: Retaining stopper

The present invention includes a frame disposed in an opening of a building and a shoji that can be freely opened and closed in the frame, and the shoji prevents the shoji from falling in a guide groove of a lower rail of a lower arm in the event of a fire. The lowering restricting member is characterized in that the lowering restricting member is provided with inner protrusions and outer protrusions protruding downward along the guide rails at both ends in the prospective direction.

The operation of the lowering restricting member 6 will be further described using the lowering restricting member 6 disposed in the guide groove 32a of the lower collar 32 of the external shoji 3.
As shown in FIGS. 6A and 6B, the lowering restricting member 6 has inner and outer protrusions 61 and 62 projecting downward along the outer guide rail 121b at both ends in the prospective direction. The placing portion 63 is disposed so as to face the guide strip 121g of the outer guide rail 121b.
Since the shoji is normally supported by the door wheel a, as shown in FIG. 6B, the lower end of the outer protrusions 61 and 62 of the lowering restricting member 6 is the guide strip 121g of the outer guide rail 121b. The lower regulating member 6 can travel smoothly on the outer guide rail 121b by the door wheel a without interfering with the outer guide rail 121b.
Further, when the door pulley a is melted in the event of a fire, as shown in FIG. 6C, the outer protrusions 61 and 62 of the lowering restricting member 6 are placed on the upper wall 121e of the outer guide rail 121b. As described above, the shoji can be prevented from greatly descending.
Here, since the reinforcing members 922 and 932 are disposed inside the lower hollow portions 221b and 321b of the lower rods 22 and 32 at a position above the fixed position of the lowering restriction member 6, the piece-shaped lowering restriction member 6 By receiving the force received by the lower rods 22 and 32 by the reinforcing members 922 and 932, the lower rods 22 and 32 are prevented from being crushed.

Claims (1)

It has a frame placed in the opening of the building, and a shoji that can be opened and closed in the frame.
The shoji has a lowering restricting member in the guide rail of the lower rail of the lower arm to prevent the shoji from falling during a fire.
The lowering restricting member includes an inner ridge portion and an outer ridge portion that protrude downward along the guide rails at both ends in the finding direction.

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