JPH10174725A - Movable type hanging wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a movable type hanging wall surely preventing a fire from spreading and smoke from diffusion even when a large pressure is generated at the time of a fire. SOLUTION: Movable non-combustible sheet (or flame proof sheet) 2 (2a to 2c) for preventing the spreading of a fire and the diffusion of smoke are plurally divided in a horizontal direction, and ones to be arranged at both ends among these are pulling prevention hooks 15 are provided so as to prevent removing by being engaged with guide rails 3a and 3b. In addition a seat board hook 16 is fixed at both end parts of a seat board 14 to prevent the removing from the guide rails 3a and 3b. Consequently, even large pressure is generated at the time of a fire, the sheets 2 are not removed from the guide rails 3a and 3b to surely prevent the fire from spreading and smoke from diffusion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable leaning wall for preventing the spread of fire and the spread of smoke when a fire occurs in a building, and more particularly to a movable leaning wall for preventing the spread of smoke. The present invention relates to a technique for preventing a member from separating from a guide rail.

[0002]

2. Description of the Related Art For example, when a fire occurs inside a building, toxic smoke rises on the ceiling and spreads throughout the room along the ceiling. This can cause harm to humans due to this toxic smoke, even in slow flames, and in the worst case can be fatal.
Therefore, in recent buildings, installation of a hanging wall is required in order to temporarily stop diffusion of smoke generated in a fire. Conventionally, a non-combustible sheet that can be wound by a take-up roller is installed on the ceiling of a building as such a hanging wall, and when a fire occurs, the take-up roller is rotated to guide the left and right guide rails. There is known a device in which a non-combustible sheet is hung down to prevent diffusion of smoke.

However, in the event of a fire, a large amount of pressure may be applied due to the occurrence of a fire breeze, and this pressure may cause the non-combustible sheet to separate from the left and right guide rails, causing smoke to leak out of the gap. Some smoke cannot be prevented from spreading.

[0004]

As described above, in the conventional hanging wall, the influence of the pressure generated by the fire is not considered, and therefore, when the pressure is applied, the non-combustible sheet comes off from the guide rail. There is a drawback that smoke diffuses from this gap.

The present invention has been made to solve such a conventional problem, and an object of the present invention is to surely prevent the diffusion of smoke even when a large pressure is generated due to a fire. It is an object of the present invention to provide a movable movable wall.

[0006]

In order to achieve the above object, the invention according to claim 1 of the present application is suspended on a ceiling portion between sections in a building, and spreads fire and spreads smoke when a fire occurs. A movable non-combustible sheet, which is configured to be able to be taken up by a take-up roller, and has a rectangular non-combustible sheet hanging down from a ceiling portion to a certain height, and a seat plate disposed at a lower end of the non-combustible sheet. A guide rail disposed on the left and right edges of the non-combustible sheet to guide the non-combustible sheet up and down, wherein the non-combustible sheet is divided into a plurality of sheets having overlapping portions in the lateral direction. The non-combustible sheet, which is locked to the guide rail, is provided with a retaining hook which is locked to the guide rail to prevent detachment.

According to a second aspect of the present invention, among the plurality of divided non-combustible sheets, the non-combustible sheets disposed at both left and right ends have a narrow width, and the non-combustible sheets disposed at other intermediate portions. Is characterized by being wide. According to a third aspect of the present invention, the narrow non-combustible sheet engaged with the left and right guide rails is taken up by a spring type take-up roller which is urged by a spring to take up the roll.
The wide non-combustible sheet located at the intermediate portion is taken up by a take-up roller that can be wound freely. The invention according to claim 4 is characterized in that a flameproof sheet is used instead of the non-combustible sheet.

According to the present invention having the above-described structure, a non-combustible sheet (or a flame-proof sheet) for blocking the spread of a fire and the smoke generated at the time of a fire is divided into a plurality of pieces in the horizontal direction. The non-combustible seats at both ends that engage with the left and right guide rails are provided with retaining hooks to prevent the non-combustible seats from being detached from the guide rails. There is no separation, and no gap is generated in this portion. Further, since the non-combustible sheet is divided into a plurality of sheets in the horizontal direction, even if the non-combustible sheet slightly shrinks due to heat generation at the time of fire, the contracted portion is absorbed by the connection portions of the divided non-combustible sheets. As a result, excessive tension is not applied due to heat shrinkage.
Further, among the non-combustible sheets divided in the horizontal direction, those which are locked to the left and right guide rails are made narrow, so that the total amount of contraction in the horizontal direction becomes small, and therefore, the retaining hooks due to heat shrinkage. Can be prevented from coming off the guide rail. Thereby, even if a large pressure is applied in the event of a fire, the diffusion of smoke can be reliably prevented, and the spread of damage can be prevented.

In addition, the non-combustible sheets at the left and right ends inserted into the guide rail require high processing accuracy in order to make the width of insertion into the guide rail substantially uniform, and the non-combustible sheet disposed at the intermediate portion is required. Since the sheet does not require high processing accuracy, the width of the non-combustible sheet located at the left and right ends is made narrow and the width of the non-combustible sheet located at the middle part is made wide. It is difficult to manufacture the non-combustible sheet.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are explanatory views showing the configuration of an embodiment of a movable sloping wall to which the present invention is applied. FIG. 1 is a front view, and FIG. 2 is a side view. As shown in the figure, this movable sloping wall is disposed on a ceiling 1 such as an opening door of a building, and in the event of a fire, a non-combustible sheet (or flameproof sheet) 2 is suspended from the ceiling by a predetermined height.
It prevents the spread and spread of smoke that spreads on the ceiling.

Guide rails 3 (3a, 3b) for engaging the movable non-combustible sheets 2 (2a, 2b, 2c) are arranged at the left and right ends of the opening door to a predetermined height below the ceiling 1. The non-combustible sheet 2 can be moved up and down by being guided by the guide rail 3. The non-combustible sheet 2 is divided into three parts in the horizontal direction. Among them, the non-combustible sheet 2a disposed at the center is widened in the lateral direction, while the non-combustible sheets 2b,
2c is a narrow width, and each non-combustible sheet 2 (2a, 2b, 2
c) is arranged overlapping by the distance L shown in FIG.
In addition, the lowermost end of the non-combustible sheet 2 serves as a weight,
A seat plate 14 having substantially the same length as the width of the opening door portion is attached.

As shown in the side view of FIG. 2, a case-shaped case 4 having substantially the same length as the width of the opening door is hung by hanging bolts 5 behind the ceiling of the opening door. Inside the case 4, a long winding shaft 6 for winding the wide non-combustible sheet 2a, and a short winding shaft 7, for winding the narrow non-combustible sheets 2b and 2c,
8 are arranged. A sprocket 9 is attached to one end of the long winding shaft 6 and is connected to a switch 11 via a roller chain 10. Therefore, the long winding shaft 6 can be rotated by reversibly rotating the opening and closing device 11, whereby the non-combustible sheet 2a can be moved up and down. The switchgear 11 operates in conjunction with a smoke detector and a fire detector, as will be described later, and is also operated by a manual operation by a manual closing operation part 12.

Further, the short shafts 7, 8 are of a spring type which is urged to wind up. Therefore, when the narrow width non-combustible sheets 2b, 2c are hung down by the weight of the seat plate 14, the springs are used. Since a force is applied in the winding direction by the urging force, a certain tension is applied to the non-combustible sheets 2b and 2c.

A lintel 13 is provided on the lower surface of the case 4, and the lintel 13 penetrates the ceiling 1 and is exposed to the opening door side. The winding shafts 6, 7, 8 inside 4 are wound up.

The narrow non-combustible sheets 2b and 2c have
A retaining hook 15 that is locked to each of the guide rails 3a and 3b to prevent the guide rails 3a and 3b from coming off is sewn to at least one place (two places in the figure). As shown in the cross-sectional view, the tip of the retaining hook 15 is bent into an L-shape to
a, 3b. Therefore, the retaining hook 15 can slide in the guide rails 3a and 3b in the vertical direction, but does not come off in the lateral direction.

As shown in FIG. 3A, a seat plate hook 16 having a substantially crank-shaped cross section is attached to the end of the seat plate 14, and this seat plate hook 16 is also the same as the retaining hook 15. The guide rails 3a and 3b
It is configured to be engaged with the inner groove portion and to slide in the vertical direction but not to be separated in the horizontal direction. Further, as shown in FIG. 3C, the end of the narrow width non-combustible sheet 2a where the retaining hook 15 is not attached is connected to the guide rail 3a.
Inside, so that the escape of smoke from this part can be prevented.

Next, the operation of the present embodiment configured as described above will be described. Normally, when no fire occurs, the three non-combustible sheets 2 (2a, 2b, 2c) are wound around the winding shafts 6, 7, 8 respectively. That is, the seat plate 14 is located at the opening of the lintel 13 shown in FIG. In the event of a fire, manual operation by the manual closing operation unit 12 or a smoke detector (not shown)
When the generation of smoke is detected, the brake of the switch 11 is released in response to this signal, and the long winding shaft 6 and the short winding shafts 7, 8 are rotated by the weight of the seat plate 14 to make it incombustible. The sheet 2 (2a, 2b, 2c) is lowered. At this time, since the two winding shafts 7 and 8 are each urged by the springs to be wound up,
The two narrow noncombustible sheets 2b and 2c located at both ends are suspended with a certain tension by the urging force of the spring and the weight of the seat plate 14.

The seat plate 14 is connected to each of the guide rails 3a,
Each non-combustible sheet 2 descends to a position where it comes into contact with the lower end of 3b, so that a portion from the ceiling to a certain height is surrounded by the non-combustible sheet 2, preventing the spread of smoke permeating the ceiling when a fire occurs. can do.

In this embodiment, the narrow width noncombustible sheets 2b, 2
c are sewn to the guide rails 3a and 3b, and the seat plate hooks 16 attached to both ends of the seat plate 14 are also sewn to the guide rails. The narrow width non-combustible sheets 2b, 2c do not separate from the guide rails 3a, 3b even when a large pressure is applied to the non-combustible sheet 2 because they are engaged with the grooves 3a, 3b. There is no problem of smoke leaking out of the air and accelerating diffusion. Further, since the narrow width non-combustible sheets 2b and 2c and the wide width non-combustible sheet 2a are arranged so as to overlap by a predetermined distance "L" as shown in FIG. 1, almost no smoke leaks from this connection portion. Furthermore, even when each non-combustible sheet 2 is heated and contracted due to the occurrence of a fire, the contraction can be absorbed in the overlapping portion (the portion of the interval L). Does not occur. Further, since the non-combustible sheets 2b, 2c engaging with the guide rails 3a, 3b are made narrow, even if thermal contraction occurs, the entire amount of contraction is small. Does not come off the non-combustible sheets 2b, 2c.

Further, the non-combustible sheet inserted into the guide rails 3a, 3b needs to be processed with high precision because the width of insertion into the guide rails 3a, 3b needs to be substantially uniform. The non-combustible sheet disposed in the middle does not require high processing accuracy. Therefore, by arranging the narrow non-combustible sheets 2b and 2c at both ends, and arranging the wide non-combustible sheet 2a (it is difficult to finish the wide non-combustible sheet to an accurate size) at the middle part, manufacturing is easy. Become.

In the present embodiment, the non-combustible sheet 2 is
Although the example of dividing is described, according to the width of the opening,
It is also possible to divide the wide non-combustible sheet 2a into two or more parts in this case. Further, in the present embodiment, the number of the retaining hooks 15 sewn to the narrow width noncombustible sheets 2b, 2c is two, but the present invention is not limited to this, and it is sufficient that the number is one or more. is there.

In the above embodiment, the non-combustible sheet 2 is used. However, a flame-proof sheet may be used instead of the non-combustible sheet 2.

[0023]

As described above, according to the present invention,
Of the plurality of divided non-combustible sheets (or flameproof sheets), seats which are disposed on the left and right and are engaged with the guide rails are provided with retaining hooks, which prevent the detachment from the guide rails. Therefore, even if a pressure is generated due to a fire wind when a fire occurs, no gap is generated between the non-combustible sheet and the guide rail, and the diffusion of smoke from this portion can be prevented.

Further, since the seat plate can be prevented from shifting laterally by the seat plate hooks attached to both ends of the seat plate, the diffusion of smoke from this portion can be prevented.

Further, the non-combustible sheet is divided into a plurality of sheets in the horizontal direction, and the connection portions of the divided non-combustible sheets are overlapped by a predetermined distance "L". Even in the case of thermal contraction, this can be absorbed, and the generation of a gap can be prevented.
Further, the width of the non-combustible sheet at both ends engaged with the guide rail is smaller than that of the non-combustible sheet disposed at the intermediate portion. Even if heat shrinkage occurs, the entire shrinkage amount is small. Does not come off the non-combustible sheet, and the retaining hook does not come off the guide rail due to heat shrinkage. Therefore, it is possible to reliably prevent the spread of fire and the diffusion of smoke.

[Brief description of the drawings]

FIG. 1 is a front view of a movable hanging wall according to an embodiment of the present invention.

FIG. 2 is a side view of a movable hanging wall according to one embodiment of the present invention.

FIGS. 3A and 3B are explanatory views showing a state of engagement with a guide rail. FIG. 3A is a cross-sectional view of FIG. 1A, and FIG.
1C is a cross-sectional view, and FIG. 1C is a cross-sectional view of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Ceiling 2 (2a, 2b, 2c) Noncombustible sheet (or flameproof sheet) 3 (3a, 3b) Guide rail 4 Case 5 Hanging bolt 6 Long winding shaft 7, 8 Short winding shaft 9 Sprocket 10 Roller chain REFERENCE SIGNS LIST 11 switchgear 12 manual closing operation part 13 lintel 14 seat plate 15 retaining hook 16 seat plate hook

Claims (4)

[Claims] Claims: 1. A movable hanging wall suspended from a ceiling or the like in a building to prevent the spread of fire and the spread of smoke in the event of a fire. A rectangular non-combustible sheet that hangs down from a part to a certain height; a seat plate disposed at a lower end of the non-combustible sheet; and a left and right end edge of the non-combustible sheet that guide the ascending and descending of the non-combustible sheet. And a guide rail, wherein the non-combustible sheet is divided into a plurality of sheets having overlapping portions in a lateral direction, and the non-combustible sheet locked to the guide rail is locked to the guide rail. A movable hanging wall, which is provided with a retaining hook for preventing a detachment. 2. The non-combustible sheet divided into a plurality of divided non-combustible sheets disposed at both left and right end portions has a narrow width, and the other non-combustible sheets disposed at an intermediate portion have a wide width. The movable basin according to claim 1. 3. A wide non-combustible sheet positioned at the intermediate portion, wherein the narrow non-combustible sheet latched to the left and right guide rails is taken up by a spring type take-up roller which is urged by a spring to take up the sheet. 4. The sheet is taken up by a take-up roller which can be wound freely.
Movable saucer wall as described. 4. The movable fall wall according to claim 1, wherein a flameproof sheet is used in place of the non-combustible sheet.