JP2001000568A - Roll-in fireproof sheet shutter with sheet door for refuge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lightly open/close a vertical sheet door which is vertically folded and elevated/lowered by using constant load springs, by which a person enters and comes out at a prescribed position in the lower part of a roll-in fireproof sheet shutter. SOLUTION: A fireproof sheet shutter is constituted by a fireproof sheet, an entering/coming-out opening part is arranged at the prescribed position in the lower part of the shutter, a sheet door frame is sewed on an outer periphery which communicates with the opening and double door frame opening parts are formed. The vertical sheet door is stored between the entering/coming-out opening part and the door frame opening parts. A sink-down weight piece and various kinds of constant load springs are arranged at the lower end of the door and also a wire rope is connected to the springs. The wire rope is fixed to a support bar in an upper end part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper and lower sheet which is housed in a ceiling portion of various buildings so as to be liftable and retractable, and which rises and falls on a part of a fireproof sheet of a rolled-in fireproof sheet shutter for preventing fire spread in a fire. The present invention relates to a roll-in fire prevention sheet shutter with an evacuation sheet door constituting a door.

[0002]

2. Description of the Related Art Conventionally, an opening / closing door serving as an evacuation entrance in such a wind-up type fire-prevention shutter or a fire-prevention sheet shutter of this type has a vertically installed central pillar at an opening, and an evacuation door is mounted separately from the fire-prevention shutter. It is a common matter that the opening and closing operations are very complicated and troublesome to install.

[0003]

In the case of the roll-up type fireproof shutter and the evacuation door described in the prior art, the opening is divided into two by a vertically fixed central pillar. In addition, there is a problem that the center pillar remains in the opening by opening the fire prevention shutter portion and the fire door portion. The present invention is intended to solve the problem of the conventional drawbacks, and its main purpose is to provide an opening below a roll-in type fireproof sheet shutter in which several fireproof sheets are connected. The upper and lower seat doors are provided so that even when the seat shutter is closed during evacuation, the upper and lower seat doors can be easily opened and evacuated by manual operation, and after evacuation, can be closed in balance with the weight of the seat plate. It is intended to provide a rolled-in fire prevention sheet shutter with an evacuation sheet door.

[0004]

Means for Solving the Problems In order to achieve the above object, a roll-in fireproof sheet shutter according to the present invention comprises:
Connect several refractory sheets. In the fire-resistant sheet,
A sheet door frame is provided at a predetermined lower position with an access opening and a door frame opening communicating with the access opening is overlapped. Equip a piece and various constant load springs. A wire rope is connected to the constant load spring, and the wire rope is fixed to a support rod at the upper end.

[0005]

The use of the roll-up fireproof sheet shutter of the present invention will be described. The roll-up shaft (20) in the roll-up case (19) in the building has the fireproof sheets (2) and (2) and the upper and lower sheet doors (3). ) Are used by moving up and down together. In the case of a fire or the like, as shown in FIG. 1, the fireproof sheet shutter (1) is lowered and closed, and at this time, the upper and lower seat doors (3) are pressed against a constant restoring force by a constant load spring (7). The upper and lower seat doors (3) are lightly closed by lifting the upper and lower seat doors (3) with the handle (17) during evacuation because they are closed in balance with the weight of the seat plate (16).
The upper and lower seat doors (3) which can be freely evacuated by ascending like a folding part (4) to form a passageway below as shown in FIG.
If you release your hand further, it will automatically descend by the weight of the seat plate and return to the original closed state.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the drawings. FIG. 1 shows a fireproof sheet shutter (1) in a closed state. Left and right guide rails (18) (1) by a switch (21) of a winding shaft (20) in a case (19).
8) is retracted and stored. The fireproof sheet shutter (1) is connected by several fireproof sheets (2) (2)... In the vertical or horizontal direction. The refractory sheets (2), (2),... Use a non-combustible woven fabric or the like as a constituent material, and may be provided with a heat-resistant core material such as a refractory felt inside.

Next, one entrance opening (6) through which a human can pass is opened at a predetermined position below the refractory sheets (2) (2). Seat door frames (5) (5)... Are formed on the refractory sheet (2) with sewn portions (15) and (15) at positions where they are opened side by side with the access opening (6). The other door frame opening (12) is formed in the surrounding frame. Said access opening (6) of said refractory sheet (2) (2);
The ascending and descending upper and lower seat doors (3), which are sewn in a circular shape on the outer periphery to close between the door frame opening (12) provided in the seat door frame (5), are housed. As shown in FIGS. 4 and 3,
The upper and lower sheet doors (3) have upper edges sewn to predetermined positions on the fire-resistant sheet (2). The upper and lower sheet doors (3) are sewn on the front and back surfaces with raising handles (17) (17) made of a sheet material having the same effect as the sheet.

Further, FIGS. 4 and 5 show that between the refractory sheet (2) (2) and the sheet door frame (5),
A support bar (11) is provided laterally at the upper end. The upper and lower sheet doors (3) have a winding part (13) formed at the lower end, and a longitudinal hanging piece (14) is housed inside the winding part (13). In addition, various constant load springs (17) are provided inside the winding portion (13) so as to always exert a force in the direction of returning to the original position when closed. A wire rope (8) is connected to the constant load spring (17).
The wire rope (8) is provided with direction changing rollers (9) (9) located outside the upper and lower sheet doors (3), and the tip thereof is connected to a wire support portion (1) of the support rod (11) at the upper part.
It is attached and fixed to 0). Reference numeral (16) indicates a seat plate,
The lower end of the refractory sheet (2) and the lower part of the seat door frame (5) are attached to the seat plate (16). (22) shows the floor surface.

[0009]

As described above, according to the rolled-in fire-prevention sheet shutter with the evacuation sheet door of the present invention, the fire-prevention sheet shutter descends and closes in the event of a fire so that the fire-prevention and smoke-prevention functions can be sufficiently achieved. In addition, even after the seat shutter is closed, the opening operation can be easily performed from both the front and back sides, so that there is an effect that humans and articles can freely enter and exit. Moreover, after the upper and lower seat doors are opened, there is an effect of automatically closing. In addition, there is an effect of sufficiently fulfilling the role of an evacuation exit. The fireproof sheet shutter has an effect that several fireproof sheets can be freely sewn to adjust the vertical and horizontal dimensions, and the fireproof sheet has an effect that the diameter of the fireproof sheet is significantly reduced and the size thereof is reduced. In addition, the door opening provided in the predetermined position of the fire-resistant sheet door and the door frame opening provided in the sheet door frame can be easily opened, and the upper and lower sheet doors can be stably stored in the middle, and There is an effect that the support rod can be stored at the upper end. Further, the upper and lower seat doors are provided with a winding portion at a lower end and a hanging heavy piece and various constant load springs are inserted therein, so that they can be stored compactly and are not visible from the outside, so that the appearance is excellent. effective. Further, the provision of the constant load spring has an excellent effect that the opening and closing operations of the upper and lower seat doors are extremely light.

[Brief description of the drawings]

FIG. 1 is a front view of a fireproof sheet shutter according to the present invention, which is partially cut away.

FIG. 2 is an enlarged front view of the main part of the upper and lower seat doors of the seat shutter according to the present invention, with a part thereof being omitted;

FIG. 3 is a cross-sectional plan view of a cross section taken along the line AA of FIG. 2 of the present invention.

FIG. 4 is a vertical sectional side view taken along line 2B-B of the present invention.

FIG. 5 is a vertical sectional side view of the present invention in which the upper and lower seat doors are partially lifted and partially removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fire prevention sheet shutter 2 Fireproof sheet 3 Upper and lower seat doors 4 Folding part 5 Seat door frame part 6 Access opening 7 Constant load spring 8 Wire rope 9 Direction change roller 10 Wire support part 11 Support rod 12 Door frame opening part 13 Winding Part 14 Hanging heavy piece 15 Sewing part 16 Seat plate 17 Handle part 18 Guide rail

Claims (1)

[Claims] 1. A roll-up fire-preventive sheet shutter with an evacuation sheet door which is wound up and down by a wind-up shaft in a wind-up case provided on a ceiling portion in various buildings. ) Are formed by connecting several refractory sheets (2) (2)... In the longitudinal direction or the lateral direction, and an entrance opening is provided at a predetermined position below the refractory sheets (2) (2). (6) is opened, and the sheet door frame (5) provided with the door frame opening (12) that opens to the entrance / exit opening (6) is polymerized by sewing portions (15) and (15), and the fire resistance is obtained. Between the seats (2) and (2) and the seat door frame (5), a support rod (11) is horizontally provided at an upper portion, and upper and lower seat doors (3).
The upper and lower sheet doors (3) are provided with a winding portion (13) at the lower end thereof, and a hanging heavy piece (14) and various constant load springs (7) are provided. A wire rope (8) is connected to the constant load spring (7), and the wire rope (8) is fixed to the support rod (11) at the upper end. Seat shutter.