JP6841951B2 - Joinery - Google Patents

Description

The present invention relates to a fitting that prevents flames from passing between the upper frame and the shoji in the event of a fire.

Patent Document 1 describes a fitting having a shoji sliding along an upper and lower frame and having a resin door roller attached to the shoji. In such fittings, when a fire breaks out, the lower frame is deformed so that the outdoor side hangs down due to the heat of the fire, and the resin door roller of the shoji is melted by the heat of the fire, causing the shoji to fall down. , A through hole that communicates indoors and outdoors may occur between the upper frame and the shoji. If a through hole is created between the upper frame and the shoji, flames may invade from there and lead to the spread of fire.

Japanese Unexamined Patent Publication No. 2007-21168

In view of the above-mentioned circumstances, an object of the present invention is to provide a fitting capable of preventing the spread of fire between the upper frame and the shoji in the event of a fire.

In order to achieve the above problems, the fitting according to the invention according to claim 1 includes a frame and a shoji sliding along the upper and lower frames, and has a metal movable flame shield on the upper frame, and has a movable flame shield. In the event of a fire, the material moves below the rail of the upper frame and descends into the rail swallowing groove of the shoji, and is a heat-expandable fireproof material between the lowered movable flame shield and the lower surface side of the upper frame. Is provided

The fitting according to the invention according to claim 2 includes a frame and a shoji sliding along the upper and lower frames, and has a metal movable flame-shielding material in the upper frame. It moves downward from the rail and descends into the rail swallowing groove of the shoji, and is thermally expandable between the upper surface of the movable flame shield material and the lower surface side of the upper frame facing the upper surface of the movable flame shield material. It is characterized by being provided with a fireproof material.

The fitting of the present invention has a holding member that holds the movable flame-shielding material at a position that does not interfere with the sliding of the shoji, and the holding member can be melted and the movable flame-shielding material can be lowered in the event of a fire.
According to this configuration, the movable flame-shielding material does not interfere with the sliding of the shoji in normal times, and the movable flame-shielding material can be reliably lowered in the event of a fire.

In the fitting of the present invention, the movable flame-shielding material can be held at a height position that closes the gap between the upper frame and the shoji when lowered in the event of a fire.
According to this configuration, the flame can be reliably blocked by the movable flame shield material.

In the fitting of the present invention, the frame is made of resin, the upper frame is provided with a flame-shielding material in a hollow portion, and when the movable flame-shielding material drops in the event of a fire, the movable flame-shielding material is continuous with the flame-shielding material. Can be assumed to be.
According to this configuration, even if the upper frame melts and disappears in the event of a fire, it is possible to prevent the flame from communicating indoors and outdoors.

In the fitting of the present invention, the frame is made of resin, and the movable flame-shielding material can be provided in the hollow portion of the rail of the upper frame.
According to this configuration, the movable flame shield material is not exposed to the outside in normal times, and it is the same as the upper frame of a normal resin sash, but in the event of a fire, the rail of the upper frame melts due to the heat of the fire. The movable flame shield material descends and the flame can be blocked.

The fitting according to the invention according to claim 1 has a movable flame-shielding material made of metal in the upper frame, and the movable flame-shielding material moves downward from the rail of the upper frame and descends into the rail swallowing groove of the shoji in the event of a fire. Therefore, even if the shoji is lowered in the event of a fire, no through hole is formed between the upper frame and the shoji, and a heat-expandable fireproof material is provided between the lowered movable flame-shielding material and the lower surface side of the upper frame. Since the gap between the upper frame and the movable flame-shielding material is closed with the heat-expandable fire-resistant material, it is possible to prevent the spread of fire from between the upper frame and the shoji.

The fitting according to the invention according to claim 2 has a movable flame-shielding material made of metal in the upper frame, and the movable flame-shielding material moves downward from the rail of the upper frame and descends into the rail swallowing groove of the shoji in the event of a fire. Therefore, even if the shoji is lowered in the event of a fire, a through hole is not generated between the upper frame and the shoji, and further, between the upper surface of the movable flame shield material and the lower surface side of the upper frame facing the upper surface of the movable flame shield material. Since the heat-expandable fire-resistant material is provided, the heat-expandable fire-resistant material expanded at the time of fire closes the gap between the upper frame and the movable flame-shielding material, so that the spread of fire from between the upper frame and the shoji can be prevented. ..

It is a vertical sectional view which shows one Embodiment of the fitting of this invention. (A) is a front view showing the arrangement state (outer shoji side) of the flame-shielding material and the movable flame-shielding material on the upper frame, and (b) is the same vertical cross-sectional view. (A) is a front view showing the arrangement state (inner shoji side) of the flame-shielding material and the movable flame-shielding material on the upper frame, and (b) is the same vertical cross-sectional view. It is a vertical cross-sectional view which shows the state at the time of the fire on the outdoor side, (a) shows the outer shoji side, (b) shows the inner shoji side. It is a vertical cross-sectional view which shows the state when a fire breaks out on the indoor side, (a) shows the outer sash side, and (b) shows the inner sash side. (A) is a plan view of a flame-shielding material fixedly provided in an outer rail, (b) is a front view of the same, and (c) is a side view of the same. (A) is a plan view of the movable flame-shielding material provided in the outer rail, (b) is the front view, and (c) is the side view. (A) is a vertical cross-sectional view showing another embodiment of the fitting of the present invention, showing a state in normal times, and (b) showing a state when a fire breaks out. (A) is a vertical cross-sectional view showing still another embodiment of the fitting of the present invention, showing a state in normal times, and (b) showing a state when a fire breaks out.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show an embodiment of the fitting of the present invention. As shown in FIG. 1, this fitting is a so-called sliding sash including a frame 1 fixed to a skeleton and an outer sash 2a and an inner sash 2b sliding along the upper and lower frames.
The frame 1 is formed into a rectangular frame by welding an upper frame 3 made of an extruded synthetic resin material, a lower frame, and left and right vertical frames by cutting the ends at an angle of 45 ° and abutting them against each other. The outer sash 2a and the inner sash 2b are made into a rectangle by welding the upper stile 6 made of extruded synthetic resin, the lower stile, the door sill, and the combined stile by cutting the ends diagonally and abutting them against each other. The double glazing 7 is housed inside the frame, and the ridge 8 is attached to the outside of the frame to hold the double glazing 7.

As shown in FIG. 1, the upper frame 3 has a plurality of hollow portions 9a, 9b, 9c, 9d arranged side by side in the prospective direction, has skeleton fixing pieces 10a, 10b on the outer peripheral side, and projects toward the inner peripheral side. The outdoor side hanging piece 11, the outer rail 12 that guides the upper part of the outer sash 2a, the inner rail 13 that guides the upper part of the inner sash 2b, and the indoor side hanging piece 14 are provided at intervals in the prospective direction. The outer rail 12 and the inner rail 13 have a hollow portion 15.
Upper frame reinforcing members 16a, 16b, 16c are provided in the first to third hollow portions 9a, 9b, 9c from the outdoor side, respectively. These upper frame reinforcing members 16a, 16b, 16c are formed in a substantially U shape by bending a metal plate such as stainless steel, and are provided over substantially the entire length of the upper frame 3 as shown in FIGS. .. Fixing metal fittings 17 having an L-shaped cross section cut to a predetermined length are arranged at intervals on the outer peripheral side surface of the upper frame 3, and the fixing metal fittings 17 are overlapped on the outdoor side of the skeleton fixing piece 10a of the upper frame 3. It is fixed to the skeleton with screws 18 from the outdoor side. The upper frame reinforcing members 16a, 16b, 16c arranged in the hollow portions 9a, 9b, 9c of the upper frame 3 are fixed to the fixing bracket 17 with screws 19 from above.
On the lower surfaces of the upper frame reinforcing members 16a, 16b, 16c, heat-expandable refractory materials 20a, 20b, 20c that foam and expand due to the heat of the fire in the event of a fire are provided along the longitudinal direction. The heat-expandable refractory materials 20a, 20b, and 20c can be appropriately selected and used from commercially available products, and for example, the trade name "Fiblock" manufactured by Sekisui Chemical Co., Ltd. can be used. This is an organic refractory material that utilizes plastic technology. It is in the form of a thin sheet that is flexible under normal conditions, and when heated to 200 ° C or higher, it foams and expands 5 to 40 times in the thickness direction to insulate. Form a layer. It does not disappear in the event of a fire, and no harmful gas is generated. Further, the fiblock has an adhesive layer with a release paper on one side, and the release paper can be peeled off for easy adhesive attachment.

As shown in FIGS. 1 and 2, a rail reinforcing material 21a and a movable flame-shielding material 4a are provided in the hollow portion 15 of the outer rail 12 of the upper frame 3. The rail reinforcing material 21a is formed by bending a metal plate such as stainless steel, has an upper horizontal wall 22, a lower horizontal wall 23, and a vertical wall 24, and the vertical wall 24 is arranged toward the indoor side. is there. As shown in FIG. 2A, the rail reinforcing member 21a extends from the end of the upper frame 3 on the outer sash side to the inner sash side beyond the merging portion of the inner and outer sashes. Further, as shown in FIG. 6, the rail reinforcing material 21a is provided with through holes 25 in the upper side wall 22 and the lower side wall 23, and the upper frame reinforcing material 16b is provided with a plurality of screws 26 inserted through the through holes 25 from below. It is fixed. As shown in FIG. 1, a heat-expandable refractory material 20d is provided on the lower surface of the upper horizontal wall 22 along the longitudinal direction.
As shown in FIGS. 1 and 7, the movable flame-shielding material 4a is formed by bending a metal plate such as stainless steel, and has an upper horizontal wall 27, a lower horizontal wall 28, and a vertical wall 29 to reinforce the rail. The vertical wall 29 is arranged so as to face the outdoor side as opposed to the material 21a. The upper side wall 27 of the movable flame shield 4a is located below the upper side wall 22 of the rail reinforcing material 21a, and the lower side wall 28 of the movable flame shield 4a is located below the lower side wall 23 of the rail reinforcing material 21a. As shown in FIG. 2, the movable flame-shielding material 4a is arranged between the two screws 26 and 26 on the side of the outer sash and the side of the central part that fix the rail reinforcing material 21a, and the movable flame-shielding material 4a of the outer sash 2a. It is provided over almost the entire length of the upper stile 6. The movable flame-shielding material 4a can be made longer and can cover a wider range by providing a notch or an elongated hole for allowing the screw 26 to escape. It is desirable that the movable flame shield 4a has a larger dimension in the height direction than the maximum lowering dimension of the external shoji 2a in the event of a fire.

As shown in FIGS. 1 and 3, a rail reinforcing material 21b and a movable flame-shielding material 4b are also provided in the hollow portion 15 of the inner rail 13 of the upper frame 3. In the rail reinforcing member 21b, the vertical wall 24 is arranged so as to face the outdoor side. Further, as shown in FIG. 3A, the rail reinforcing material 21b extends from the end of the upper frame 3 on the inner sash side to the outer sash side beyond the merging portion of the inner and outer sashes, and a plurality of rail reinforcing members 21b are inserted from below. It is fixed to the upper frame reinforcing material 16c by a screw 26.
In the movable flame shield material 4b, the vertical wall 29 is arranged so as to face the indoor side, contrary to the rail reinforcing material 21b. As shown in FIG. 3, the movable flame-shielding material 4b is arranged between the two screws 26 and 26 on the side of the inner sash and the central part of fixing the rail reinforcing material 21b, and the movable flame-shielding material 4b is arranged between the two screws 26 and 26 of the inner sash 2b. It is provided over almost the entire length of the upper stile 6. The movable flame-shielding material 4b can be made longer and can cover a wider range by providing a notch or an elongated hole for allowing the screw 26 to escape. It is desirable that the movable flame-shielding material 4b has a larger dimension in the height direction than the maximum lowering dimension of the internal shoji 2b at the time of fire.

As shown in FIG. 1, the upper stile 6 of the outer sash 2a and the inner sash 2b has a rail swallowing groove 5 that opens upward, and the outer rail 12 and the inner rail 13 are formed in the upper part of the rail swallowing groove 5. The lower part is swallowed. In the rail swallowing groove 5, a metal reinforcing member 30 is provided along the inner peripheral surface of the groove. Thermally expandable refractory materials 20e, 20f, 20g are provided along the longitudinal direction on the outdoor side surface and the indoor side surface of the outdoor wall of the reinforcing material 30, and the indoor side surface of the indoor side wall. Further, the upper stile 6 has a hollow portion 31 below the rail swallowing groove 5, and a metal reinforcing member 32 is provided in the hollow portion 31. The reinforcing material 32 is formed in a U-shaped cross section having an upper wall 33, a lower wall 34, and an indoor side wall 35, and has an upper surface of the upper wall 33, a lower surface of the lower wall 34, and an outdoor side surface and an indoor side surface of the indoor side wall 35. The heat-expandable refractory materials 20h, 20i, 20j, and 20k are provided along the longitudinal direction, respectively. Further, the upper stile 6 has a glass holding groove 36 below the hollow portion 31, and a metal reinforcing member 37 is also provided in the glass holding groove 36, which is regarded as an expected surface on the inner peripheral side of the reinforcing member 37. 20 liters and 20 m of heat-expandable refractory material are provided on the attached surface along the longitudinal direction.

FIG. 4 shows a state when a fire breaks out outside the room. First, the external shoji 2a side will be described with reference to FIG. 4A. When a fire breaks out, the lower frame is deformed by the heat of the fire and the door roller is melted, so that the shoji 2a is lowered. Further, since the upper frame 3 and the upper stile 6 are made of resin, their outdoor outer portions are melted and disappear. Then, as the outer rail 12 melts, the movable flame-shielding material 4a provided in the outer rail 12 descends into the rail swallowing groove 5 of the upper stile 6 by its own weight. The lowered movable flame-shielding material 4a is held at a height position where the upper side wall 27 rides on the lower side wall 23 of the rail reinforcing material 21a to close the gap between the upper frame 3 and the outer sash 2a. This prevents a through hole from being formed between the upper frame 3 and the outer sash 2a.
At the same time, the upper frame reinforcing materials 16a and 16b, which are metal members, the rail reinforcing material 21a, the reinforcing material 30 in the rail swallowing groove 5 of the upper stile 6, and the reinforcing material 32 in the hollow portion 31 of the upper stile 6. The heat-expandable refractory materials 20a, 20b, 20d, 20e, 20f, 20h, 20i, 20j, 20k, 20l, 20m provided in the reinforcing material 37 in the glass holding groove 36 of the upper rail 6 are foamed and expanded by the heat of the fire. Then, the gaps between these metal members 16a, 16b, 21a, 4a, 30, 32, 37 are closed. In this way, the metal members 16a, 16b, 21a, 4a, 30, 32, 37 and the heat-expandable refractory materials 20a, 20b, 20d, 20e, 20f, from the upper frame 3 to the double glazing 7 of the outer sash 2a, By continuously closing at 20h, 20i, 20j, 20k, 20l, and 20m, it is possible to prevent the flame from invading the room.
As shown in FIG. 4B, the inner rail 13 of the upper frame 3 is melted on the inner rail 2b side as well as the outer shoji 2a side, so that the movable flame shield material 4b provided in the inner rail 13 is released. The movable flame-shielding material 4b that descends into the rail swallowing groove 5 of the upper stile 6 by its own weight is placed on the heat-expandable refractory material 20f that has foamed and expanded in the rail swallowing groove 5, so that the upper frame 3 It is held at a height position that closes the gap between the rail and the shoji 2b. This prevents the formation of a through hole between the upper frame 3 and the internal sash 2b. Further, the upper frame reinforcing materials 16b and 16c, which are metal members, the rail reinforcing material 21b, the reinforcing material 30 in the rail swallowing groove 5 of the upper stile 6, and the reinforcing material 32 in the hollow portion 31 of the upper stile 6, respectively, are provided. The heat-expandable refractory materials 20b, 20c, 20e, 20f, 20h, 20i, 20j, 20k are foamed and expanded by the heat of the fire, and these metal members 16b, 16c, 21b, 4b, 30, 32, 37 are connected to each other. Close the gap between them.

FIG. 5 shows a state when a fire breaks out on the indoor side. First, the side of the shoji 2b will be described with reference to FIG. 5 (b). When a fire breaks out, the lower frame is deformed by the heat of the fire and the door roller is melted, so that the shoji 2b is lowered. Further, since the upper frame 3 and the upper stile 6 are made of resin, their indoor parts are melted and disappear. Then, as the inner rail 13 melts, the movable flame-shielding material 4b provided in the inner rail 13 descends into the rail swallowing groove 5 of the upper stile 6 by its own weight. The lowered movable flame-shielding material 4b is held at a height position where the upper side wall 27 rides on the lower side wall 23 of the rail reinforcing material 21b to close the gap between the upper frame 3 and the inner shoji 2b. This prevents the formation of a through hole between the upper frame 3 and the internal sash 2b.
At the same time, the upper frame reinforcing material 16c and the rail reinforcing material 21b, which are metal members, the reinforcing material 30 in the rail swallowing groove 5 of the upper stile 6, the reinforcing material 32 in the hollow portion 31 of the upper stile 6, and the upper stile. The heat-expandable refractory materials 20c, 20d, 20f, 20g, 20h, 20i, 20k, and 20m provided in the reinforcing material 37 in the glass holding groove 36 of No. 6 foam and expand due to the heat of the fire, and these metal members. It closes the gap between 16c, 21b, 4b, 30, 32, and 37. In this way, the metal members 16c, 21b, 4b, 30, 32, 37 and the heat-expandable refractory materials 20c, 20d, 20f, 20g, 20h, 20i, from the upper frame 3 to the double glazing 7 of the inner sash 2b, By continuously closing at 20k and 20m, it is possible to prevent the flame from going out of the room.
As shown in FIG. 5A, the outer rail 12 of the upper frame 3 is melted on the outer sash 2a side as well as the inner sash 2b side, so that the movable flame shield 4a provided in the outer rail 12 is released. The movable flame-shielding material 4a that descends into the rail swallowing groove 5 of the upper stile 6 by its own weight is placed on the heat-expandable refractory material 20f that has foamed and expanded in the rail swallowing groove 5, so that the upper frame 3 It is held at a height position that closes the gap between the rail and the shoji 2a. This prevents a through hole from being formed between the upper frame 3 and the outer sash 2a. Further, the upper frame reinforcing materials 16b and 16c, which are metal members, the rail reinforcing material 21a, the reinforcing material 30 in the rail swallowing groove 5 of the upper stile 6, the reinforcing material 32 in the hollow portion 31 of the upper stile 6, and the upper stile. The heat-expandable refractory materials 20b, 20c, 20f, 20g, 20h, 20k, 20m provided in the reinforcing material 37 in the glass holding groove 36 of No. 6 are foamed and expanded by the heat of the fire, and these metal members 16b, 16c. , 21a, 4a, 30, 32, 37 close the gap between each other.

The movable flame-shielding materials 4a and 4b may be connected to the rail reinforcing materials 21a and 21b and the upper frame reinforcing materials 16b and 16c in a state of being lowered in the event of a fire, for example, by inserting a screw 26. In this case, the lowered movable flame-shielding materials 4a and 4b can be prevented from coming off by being caught by the reinforcing material 30 provided in the rail swallowing groove 5 of the shoji 2a and 2b.

As described above, the fitting has movable flame-shielding materials 4a and 4b in the upper frame 3, and the movable flame-shielding materials 4a and 4b fall into the rail swallowing groove 5 of the shoji 2a and 2b in the event of a fire. Even if the shoji 2a and 2b are lowered in the event of a fire, no through hole is formed between the upper frame 3 and the shoji 2a and 2b, so that it is possible to prevent the spread of fire from between the upper frame 3 and the shoji 2a and 2b. For example, if the space between the upper frame and the shoji is to be closed only by the heat-expandable refractory material provided on the upper frame or the upper frame of the shoji, the upper frame or the upper frame will be melted and deformed by the heat of the fire. Along with this, the heat-expandable refractory material may fall off and through holes may be formed. However, by providing the movable flame-shielding materials 4a and 4b as in the present fitting, the occurrence of through holes can be prevented more reliably.
Further, this fitting has a holding member (outer rail 12, inner rail 13) that holds the movable flame-shielding materials 4a and 4b at positions that do not interfere with the sliding of the shoji 2a and 2b, and the holding member melts in the event of a fire. Since the movable flame-shielding materials 4a and 4b are lowered, the movable flame-shielding materials 4a and 4b do not interfere with the sliding of the shoji 2a and 2b in normal times, and the movable flame-shielding materials 4a and 4b can be reliably lowered in the event of a fire. ..
By making the movable flame-shielding materials 4a and 4b made of metal and having a structure in which the movable flame-shielding materials 4a and 4b descend by their own weight, the movable flame-shielding materials 4a and 4b can be easily installed.
Further, when the movable flame-shielding materials 4a and 4b are lowered in the event of a fire, the fitting is held at a height position that closes the gap between the upper frame 3 and the shoji 2a and 2b. The flame can be reliably blocked.
In this fitting, the frame 1 is made of resin, and the upper frame 3 has flame-shielding materials (upper frame reinforcing materials 16a, 16b, 16c, rail reinforcing materials 21a, 21b, and thermal expansion fire-resistant materials 20a, 20b, 20c) in the hollow portion. , 20d) are provided, and when the movable flame-shielding materials 4a and 4b are lowered in the event of a fire, the movable flame-shielding materials 4a and 4b are provided with flame-shielding materials (upper frame reinforcing materials 16a, 16b, 16c, rail reinforcing materials 21a, Since it is continuous with 21b and the heat-expandable fireproof materials 20a, 20b, 20c, 20d), it is possible to prevent the flame from communicating indoors and outdoors even if the upper frame 3 is not melted at the time of a fire.
Further, in this fitting, since the frame 1 is made of resin and the movable flame-shielding materials 4a and 4b are provided in the hollow portions 15 of the rails 12 and 13 of the upper frame 3, the movable flame-shielding materials 4a and 4b are normally used. Is not exposed to the outside and is the same as the upper frame of a normal resin sash, but in the event of a fire, the movable flame shields 4a and 4b become as the rails 12 and 13 of the upper frame 3 melt due to the heat of the fire. It can descend and block the flame.

FIG. 8 shows another embodiment of the fitting of the present invention, FIG. 8 (a) shows a normal state, and FIG. 8 (b) shows a state at the time of a fire. This fitting is also a sliding sash, the upper frame 3 is made of aluminum profile, and the upper stiles 6 of shoji 2a and 2b are made of aluminum profile 6a on the outdoor side and resin profile 6b on the indoor side. is there.
As shown in FIG. 8A, the upper frame 3 is provided with a movable flame shield 4 on the outdoor side of the outer rail 12. The movable flame-shielding material 4 is formed by bending a metal plate such as stainless steel, and has a plate-shaped portion 38 along the outdoor side surface of the outer rail 12 and a step portion protruding from the upper end of the plate-shaped portion 38 to the outdoor side. Has 39. The plate-shaped portion 38 has a height of about half that of the outer rail 12, is in contact with the upper side of the outer rail 12, and is fixed by a resin rivet 40. Therefore, in normal times, the movable flame-shielding material 4 does not interfere with the sliding of the external obstacle 2a. The movable flame-shielding material 4 may be provided only in the range where the closed outer sash 2a is located, but may be provided over substantially the entire length of the upper frame 3.
In the upper stile 6, a rail swallowing groove 5 is formed in the aluminum profile 6a on the outdoor side, and heat-expandable refractory materials 20n and 20p are formed along the longitudinal direction on the prospective surface and the finding surface of the rail swallowing groove 5. It is provided.

When a fire breaks out, the outer sash 2a goes down, but when the resin rivet 40 melts, the movable flame shield 4 falls into the rail swallowing groove 5 of the outer sash 2a, and between the upper frame 3 and the outer sash 2a. Prevents through holes from forming in the rivet. In the movable flame shield material 4, the upper frame 3 and the outer sash 2a are formed by locking the step portion 39 to the upper edge portion of the upper stile 6 or riding on the foamed / expanded heat-expandable refractory material 20n. It is held at a height position that closes the gap between them. At the same time, the heat-expandable refractory materials 20n and 20p provided in the rail swallowing groove 5 of the upper stile 6 foam and expand due to the heat of the fire, and the gap between the upper stile 6 and the upper frame 3 and the rail swallowing groove 5 and the movable shield Since the gap between the flame materials 4 is closed, the passage of the flame can be reliably blocked. In the illustrated example, the movable flame shield 4 is provided on the outdoor side of the outer rail 12, but by providing the movable flame shield 4 on the indoor side of the inner rail 13, the upper frame 3 and the inner shoji 2b are provided in the event of a fire. It is possible to prevent a through hole from being formed between the and.

9A and 9B show still another embodiment of the fitting of the present invention, FIG. 9A shows a normal state, and FIG. 9B shows a state at the time of a fire.
As shown in FIG. 9A, the upper frame 3 is provided with a movable flame-shielding material 4 between the outer rail 12 and the inner rail 13. The movable flame shield 4 is formed by bending a metal plate such as stainless steel, and has a vertical wall 41a along the indoor side surface of the outer rail 12, a horizontal wall 42 along the inner peripheral side surface of the upper frame, and an inner rail 13. It has a vertical wall 41b along the outdoor surface of the above, and the vertical wall 41a on the outdoor side is fixed to the upper part of the outer rail 12 with a resin rivet 40, and the movable flame shield 4 slides the inner and outer shoji 2a and 2b in normal times. It is designed not to get in the way of. A heat-expandable refractory material 20q is provided on the upper surface of the lateral wall 42 along the longitudinal direction.

When a fire breaks out, the outer sash 2a goes down, but when the resin rivet 40 melts, the movable flame shield 4 falls into the rail swallowing groove 5 of the outer sash 2a, and between the upper frame 3 and the outer sash 2a. Prevents through holes from forming in the rivet. The movable flame-shielding material 4 has an upper frame 3 when the side wall 42 is locked to the upper edge of the upper stile of the inner sash 2b or is placed on the foamed / expanded heat-expandable refractory materials 20p, 20n. It is held at a height position that closes the gap between the and the external shoji 2a. At the same time, the upper surface of the movable flame-shielding material 4 and the heat-expandable refractory materials 20n, 20p, 20q provided in the rail swallowing groove 5 of the upper stile 6 foam and expand due to the heat of the fire, and the movable flame-shielding material 4 and the top. Since the gap between the frame 3 and the upper frame 6, the gap between the upper frame 6 and the movable flame shield material 4, and the gap between the rail swallowing groove 5 and the movable flame shield material 4 are closed, the passage of flame can be reliably blocked.

The present invention is not limited to the embodiments described above. The shape, material, and mounting method of the movable flame shield can be changed as appropriate. The shape and material of the frame and stile do not matter. The present invention is not limited to sliding sashes, but can be applied to all fittings provided with sliding door type shoji such as single sliding sashes and entrance sliding doors.

1 frame 2a Shoji (shoji)
2b Internal shoji (shoji)
3 Upper frame 4, 4a, 4b Movable flame shield 5 Rail swallowing groove 6 Upper stile 12 Outer rail (holding member)
13 Inner rail (holding member)
15 Rail hollow parts 16a, 16b, 16c Upper frame reinforcement (flame shield)
20a, 20b, 20c, 20d, 20e, 20f, 20g, 20h, 20i, 20j, 20k, 20l, 20m, 20n, 20p, 20q Thermal expansion refractory material (flame shield material)
21a, 21b Rail reinforcement (flame shield)
40 rivets (holding member)

Claims (2)

It is equipped with a frame and a shoji that slides along the upper and lower frames, and has a metal movable flame shield on the upper frame, and the movable flame shield moves below the rail of the upper frame in the event of a fire. A fitting that descends into the rail swallowing groove and is characterized in that a heat-expandable fireproof material is provided between the descended movable flame-shielding material and the lower surface side of the upper frame. It has a frame and a shoji that slides along the upper and lower frames, and has a metal movable flame-shielding material on the upper frame, and the movable flame-shielding material moves below the rail of the upper frame in the event of a fire. It descends into the rail swallowing groove, and is characterized by the provision of a heat-expandable fireproof material between the upper surface of the movable flame-shielding material and the lower surface side of the upper frame facing the upper surface of the movable flame-insulating material. Joinery to do.

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