JP3658492B2 - Fire screen device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fire prevention screen device provided as fire prevention and smoke prevention equipment for preventing the spread of fire or the spread of smoke when a fire occurs.
[0002]
[Prior art]
A conventional fire screen apparatus provided as fire and smoke prevention equipment will be described with reference to FIG.
[0003]
A fire screen winding device 2 is provided on the back side of the ceiling 1, and a winding shaft 3 of the fire screen winding device 2 is provided across a front opening to be partitioned and rotatably supported at both ends. The shaft 3 is rotated by a winding motor 4 to wind up a nonflammable fire screen. The fire screen 5 fed from the winding shaft 3 is suspended from a slit-like opening 6 provided in the ceiling 1, and a plurality of drain heads 7 are provided on both sides of the opening 6. The drainer head 7 communicates with a water source such as a water storage tank (not shown) through a pipe 8.
[0004]
When a fire occurs, the winding motor 4 is driven to suspend the fire screen 5, partitioning the space, and water is sprayed from the drainer head 7 toward the fire screen 5. The nonflammable fire screen 5 and the water curtain sprayed and formed on the fire screen 5 are shielded from fire and fire-proofed.
[0005]
[Problems to be solved by the invention]
In the conventional fire screen apparatus, the fire screen 5 is wound around the winding shaft 3. Accordingly, when the frontage height increases, the winding shaft 3 becomes thicker and the storage space becomes larger. In addition, since the take-up shaft 3 is supported at both ends, it is necessary that the take-up shaft 3 has high strength and rigidity to partition the large booth, and the take-up shaft 3 must have a large diameter. I didn't get it.
[0006]
In view of such circumstances, the present invention is intended to reduce the storage space of the fire screen device and to improve the simplification, fire resistance, heat insulation, flame resistance and smoke resistance of the fire screen device.
[0007]
[Means for Solving the Problems]
The present invention is a bracket provided above the left and right sides of the opening, and can be driven by the opening and closing machine elevating sprocket provided with a lifting sprocket left and right brackets, provided storage rail in the tangential direction of the lifting sprocket, flex freely Aggregate is provided at a predetermined interval on a fireproof screen, and a connecting chain that engages with the lifting sprocket is engaged with an end of the aggregate, and a storage roller is rotatably provided by projecting from the connecting chain. A roller is allowed to roll on the storage rail, and the upper end of the fire screen is engaged with the bracket side, and is separated from the highest vertex of the elevating sprocket by a distance of 1/2 of the pitch between the aggregate and the aggregate. A folding guide is provided below the elevating sprocket, and is foldable between the storage roller and the storage roller so as to roll along the horizontal guide. It relates to fire protection screen device provided with a guide roller, and the provided storage rail parallel to the chain derived rod slidably disposed a ring hanging on the chain induction rod engaged the upper end of the fire screen to the hoisting ring In addition to the fire screen apparatus, the fire screen apparatus further includes engaging pins protruding in the width direction at predetermined intervals on the edge of the fire screen, and the engaging pins are fitted to the link connecting pins of the connecting chain. It is concerned.
[0008]
As the lifting sprocket rotates, the connecting chain moves up and down, and the fire screen moves up and down. The fire screen that has been lifted is folded after passing through the lifting sprocket, and is stored while being suspended on the storage rail.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to FIGS.
[0010]
A guide rail 11 is fixed to the side pillar 10 adjacent to the frontage, and a storage box 12 is provided on the upper side of the guide rail 11. A side surface of the storage box 12 is constituted by a bracket 13, and an upper guide rail 14 continuing to the guide rail 11 is provided in the bracket 13, and a bearing 15 is provided at a position facing the upper end of the upper guide rail 14. An interlocking shaft 16 is rotatably provided across the two bearings 15. The interlocking shaft 16 includes a sliding collar portion 17 and a shaft portion 20 that forms both end portions. Lifting sprockets 18 are fixed to both ends of the sliding collar portion 17, and one of the shaft portions 20 is attached to the bracket 13. A driven sprocket 19 is fitted to the end of the shaft that protrudes through the bracket 13 and protrudes from the bracket 13. The bracket 13 is provided with an opening / closing machine 21, and a drive sprocket (not shown) fitted to the output shaft of the opening / closing machine 21 and the driven sprocket 19 are connected by a chain 22.
[0011]
A connecting chain presser 23 having an arc concentric with the circumscribed circle of the elevating sprocket 18 is fixed to the bracket 13. As the lift sprocket 18 is separated from the lift sprocket 18 in the tangential direction of the circumscribed circle of the lift sprocket 18, a downwardly inclined storage rail 24 is fixed to the bracket 13 and a chain guide rod 25 parallel to the storage rail 24 is attached to the storage rail 24. Provide on the upper side.
[0012]
The fireproof screen 27 is made of a non-combustible material made of silicon fiber, glass fiber, or the like or a curtain cloth 28 made by stitching a plurality of cloths into a single cloth cloth, and aggregates 29 are sewn at a required interval. The pins 30 are fitted on both ends of the aggregate 29. A connection chain 31 is provided along a side edge of the curtain cloth 28, and the pin 30 passes through a pivot portion of the connection chain 31, and the pins 30 are sequentially connected by the connection chain 31. A storage roller 32 is rotatably provided at the protruding end of the pin 30. The storage roller 32 is engaged with the guide rail 11, and the connecting chain 31 is engaged with the elevating sprocket 18.
[0013]
Further, a suspension ring 33 penetrates the chain guide rod 25, and the suspension ring 33 is engaged with the upper end of the fireproof screen 27.
[0014]
When the opening / closing machine 21 is driven and the driven sprocket 19 is rotated clockwise through the chain 22, the elevating sprocket 18 is rotated clockwise. The connection chain 31 is pulled up by the rotation of the elevating sprocket 18 and the curtain cloth 28 is raised. The connecting chain presser 23 prevents the connecting chain 31 from coming off the lifting sprocket 18 while the lifting sprocket 18 is rotating.
[0015]
The storage roller 32 is fitted into the storage rail 24 after being removed from the upper guide rail 14, and the storage rail 24 is moved to the anti-lifting sprocket 18 side by the downward slope of the storage rail 24 and stored in the storage rail 24. . After passing through the interlocking shaft 16, the curtain cloth 28 between the aggregate 29 and the aggregate 29 hangs down by its own weight, and the fire screen 27 is folded into a bellows shape and stored in the storage box 12.
[0016]
Further, when the elevating sprocket 18 is rotated counterclockwise by the opening / closing device 21, the fire screen 27 is pulled out from the storage box 12, descends along the guide rail 11, blocks an opening such as a corridor, etc. Is defined. The suspension ring 33 moves the chain guide bar 25 as the fire screen 27 is pulled out, stops at the end of the chain guide bar 25 on the lift sprocket 18 side, and closes the upper end of the fire screen 27 in the closed state. The fire prevention screen 27 is prevented from falling by its own weight. As an engaging means for preventing the fall, the upper end of the fire screen 27 may be directly fixed to the storage rail 24, or the shaft of the uppermost storage roller 32 is made long so that the storage rail 24 Various arrangements such as engagement with a provided stopper are conceivable.
[0017]
In the other embodiment shown in FIG. 4, folding is actively performed when the fire screen 27 is stored.
[0018]
A folding guide roller 36 is provided to project from the fire screen 27 at the edge of the fire screen 27 and between the aggregate 29 and the aggregate 29. A traverse guide 37 is provided on the bracket 13 below the elevating sprocket 18 and below the apex of the elevating sprocket 18 by a distance of ½ of the pitch between the aggregate 29 and the aggregate 29.
[0019]
When the elevating sprocket 18 pulls up the connecting chain 31 and the fire screen 27 rises, the folding guide roller 36 comes into contact with the traverse guide 37 and traverses along the traverse guide 37, and the folding of the fire screen 27 is promoted.
[0020]
FIG. 5 shows still another embodiment. Engaging pins 38 project from the end edges of the curtain cloth 28 so as to be equal to the roller pitch of the chain, and the engaging pins 38 are rotatably inserted into the link connecting pins 39 of the connecting chain 31. Thus, the connecting chain 31 is flexibly engaged along the end edge of the curtain cloth 28.
[0021]
The fire screen 27 moves up and down integrally with the connecting chain 31 by pulling up the connecting chain 31 by the lifting sprocket 18. The engaging pins 38 may have a predetermined interval such as twice or three times the pitch of the link connecting pins 39.
[0022]
Furthermore, a timing belt may be fixed to the edge of the fire screen 27 instead of the connecting chain 31. Further, a storage roller 32 may be provided for every other aggregate 29, and the aggregate 29 without the storage roller 32 may be used as a weight for folding the fireproof screen 27.
[0023]
An example of the fireproof screen 27 will be described with reference to FIG.
[0024]
A polymer water-absorbing material 34 is provided in layers between the two non-flammable curtain cloths 28, 28, and further quilted. According to the fireproof screen 27, the polymer water-absorbing material 34 absorbs water, thereby improving airtightness and heat insulation. The fireproof screen has a fireproof, smokeproof, and heat shielding effect by using a multilayer structure of a polymer absorbent material and a non-combustible flame retardant sheet made of silicon fiber or glass fiber. Since the curtain is formed, a multilayer structure of a sheet made of a material such as a fiber or a resin woven material that does not have incombustible flame retardancy and a polymer absorbent material may be used.
[0025]
In the above-described embodiment, the sliding collar portion 17 connecting the left and right lifting sprockets may be omitted. In this case, an opening / closing device is provided for each of the left and right lifting sprockets so as to be driven synchronously.
[0026]
Further, since the fire screens are sequentially stored, the storage rail does not necessarily have a downward slope.
[0027]
【The invention's effect】
As described above, according to the present invention, the weight of the fire screen is supported by both the lifting base metal and the wire take-up shaft via the winding wire, so the load on the wire take-up shaft is greatly reduced. Thus, the diameter can be reduced. In addition, even when fire screen units are connected in series, there is no gap between fire screens, and there is no need for middle pillars and guide rails, so the structure is simplified and installation is possible in places where middle pillars and guide rails cannot be installed. Since there is no restriction and it can be bent and provided, the degree of freedom of installation location is greatly increased. Further, if the fireproof screen has a multi-layer structure including a polymer water-absorbing material, the airtightness and heat insulation are further improved.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of the present invention.
FIG. 2 is a perspective view showing a main part of the embodiment.
FIG. 3 is a cross-sectional view of a main part showing the previous embodiment.
FIG. 4 is a side view showing another embodiment of the present invention.
FIG. 5 is a partial perspective view showing still another embodiment of the present invention.
FIG. 6 is a partial sectional view showing an example of a fire screen used in the embodiment of the present invention.
FIG. 7 is an explanatory diagram showing a conventional example.
[Explanation of symbols]
12 Storage Box 16 Interlocking Shaft 18 Elevating Sprocket 19 Driven Sprocket 24 Storage Rail 25 Chain Guide Rod 27 Fire Screen 30 Pin 31 Connection Chain 32 Storage Roller 38 Engaging Pin

Claims (3)

A bracket provided above the left and right sides of the opening, and can be driven by the opening and closing machine elevating sprocket provided with a lifting sprocket left and right brackets, provided storage rail in the tangential direction of the lifting sprocket, to flex freely fire screen Aggregates are provided at a required interval, and a connecting chain that engages with the lifting sprocket is engaged with an end of the aggregate, and a storage roller is rotatably provided by projecting from the connection chain, and the storage roller is stored in the storage It is possible to roll on the rail, and the upper end of the fire screen is engaged with the bracket side, and is separated from the most apex of the elevating sprocket by a distance of 1/2 of the pitch between the aggregate and the aggregate. A transverse guide is provided below, and is a folding guide roller that can roll along the transverse guide between the storage roller and the storage roller. Fire screen device characterized in that a la.   The fire screen apparatus according to claim 1, wherein a chain guide bar is provided in parallel with the storage rail, a suspension ring is slidably provided on the chain guide bar, and an upper end of the fire screen is engaged with the suspension ring.   The fire screen device according to claim 1, wherein engaging pins protruding in the width direction are provided at predetermined intervals on an edge of the fire screen, and the engaging pins are fitted to the link connecting pins of the connecting chain.

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