JP2000337046A - Fire and smoke preventive screen shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire and smoke preventive screen shutter enhancing by means of a simple structure the airtightness of a closing door formed in a screen, by providing overlapping parts at the closing edges of the closing door, and covering the closing edges of the closing door with the overlapping parts. SOLUTION: This fire and smoke preventive screen shutter has an incombustible or fire-resistant flexible screen 12 freely openably and closably partitioning the internal space of a building, and a slit 14 is formed in the screen 12 to provide an evacuation opening serving as a closing door 16 on one side parted by the slit 14. Overlapping screens 18, 20 covering the slit 14 from both sides in a sandwiching fashion when the closing door 16 is closed are provided on both sides of the screen 12 on the other side parted by the slit 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof and smokeproof screen shutter for preventing the spread of a building and the spread of smoke by partitioning the interior space of the building with a screen curtain which is rich in noncombustibility or fire resistance.

[0002]

2. Description of the Related Art Inside a building, fire protection equipment such as fire barriers and fire shutters for shutting off flames and smoke and fire opening and closing doors for allowing people to evacuate, etc., in preparation for a fire in the past. Evacuation passages are being systematically deployed. Recently, as a new fire protection system that replaces these fire barriers and fire shutters, a screen shutter for fire and smoke protection that uses a non-combustible or fire-resistant screen curtain to block fire and smoke has been proposed.

[0003] This fire and smoke screen shutter is
The screen curtain, which is incombustible or fire-resistant and has flexibility, is unreeled from the take-up shaft and hangs down from the ceiling. A weight is attached to the lower edge of the screen curtain, and the screen curtain swings. Movement can be prevented and the posture can be maintained in a stable state. This allows the fire and smoke screen shutters to partition the interior space of the building,
It is designed to block fire and smoke.

The fire and smoke screen shutter is provided with an opening / closing door so that even after the screen shutter is closed, a person can pass through the opening / closing door and evacuate.

[0005]

However, in a screen shutter for fire and smoke prevention using a screen curtain, an opening / closing door is formed on the screen curtain. Will be performed. However, since the screen curtain is flexible and lightweight, when the door is closed, a gap is likely to occur at the abutting part with the opening and closing part. It is pushed open to create a gap. Screen shutters are required to be airtight from the viewpoint of fire protection and smoke prevention, but when a gap is created in the opening and closing door part as described above, air flows in and smoke flows out from there,
The function as a screen shutter for fire prevention and smoke prevention is significantly reduced.

Therefore, it is conceivable to attach a metal frame to the abutting portion between the opening / closing door and the screen curtain. However, in this case, there is a problem that winding and folding cannot be performed when the screen shutter is stored.

Therefore, the present invention has been made in view of such a conventional problem, and an overlap portion is provided at an opening / closing edge of an opening / closing door formed on a screen curtain, and the overlapping portion forms an opening / closing edge of the opening / closing door. An object of the present invention is to provide a screen shutter for fire prevention and smoke prevention in which the cover has a simple structure to improve the airtightness of the door.

[0008]

In order to achieve the above object, a fireproof and smokeproof screen shutter according to claim 1 of the present invention is a nonflammable or fireproof flexible shutter for partitioning the interior space of a building so that it can be opened and closed. In the fireproof and smoke-proof screen shutter provided with a screen curtain having a property and an opening / closing door is provided on the screen curtain,
An overlap curtain is provided along the opening / closing edge of the opening / closing door to cover the opening / closing edge when the door is closed.

According to this structure, when the door is closed, the opening / closing edge of the butted portion of the door is covered by the overlapping curtain provided on the screen curtain.
Its airtightness can be greatly improved. In other words, since the opening and closing edge of the opening and closing door is sealed by the overlapping curtain,
The fire prevention function can be improved by preventing air from entering the fire side from the opening / closing door portion, and the smoke prevention function can be improved by preventing smoke generated by a fire from flowing out of the opening / closing door portion. In addition, since only the overlapping curtain is added to the screen curtain, it is possible to prevent the winding and folding of the screen curtain from being hindered even when the screen shutter is stored.

According to a second aspect of the present invention, there is provided a screen shutter for fire and smoke prevention, wherein the overlapping curtain is separated from the opening / closing edge with the opening and closing of the opening / closing door. And an opening / closing mechanism for overlapping the overlapping curtain with the opening / closing edge when the shutter is closed.

According to this configuration, when the opening / closing door is opened, the overlap curtain is separated in the opening direction. Therefore, when the door is closed next, the overlapping curtain does not become an obstacle, and when the closing door is closed, the overlapping curtain is overlapped, so that the overlapping curtain can be opened and closed without operating each time. The airtightness of the edge can be maintained.

Further, in the fire and smoke preventing screen shutter according to claim 3 of the present invention, the opening and closing door is bendable by a lower edge of the screen curtain and a slit formed upward from the lower edge. It is a part of the screen curtain.

According to this configuration, since the door is bent obliquely from the upper end of the slit, when the door is opened, the lower edge is lifted upward. For this reason, by releasing the opening force of the door, the door is closed naturally, and after evacuation by opening the door, the door should be securely closed to maintain the airtightness of the screen shutter. Can be.

Further, in a fireproof and smokeproof screen shutter according to a fourth aspect of the present invention, a screen weight is attached to a lower edge of the screen curtain, and a door weight is attached to a lower edge of the door. A weight for the overlap curtain is attached to a lower edge of the overlap curtain, and a hinge is provided between the weight for the door and the weight for the screen and between the weight for the overlap curtain and the weight for the screen.

According to this structure, the opening / closing door, the overlap curtain and the screen curtain are given predetermined tensions by the door weight, the overlap curtain weight and the screen weight, so that their flatness is ensured. ,
The state of hanging vertically downward is maintained. By providing hinges between the door weight and the screen weight and between the overlap curtain weight and the screen weight, the door and the overlap curtain can be opened and closed stably with tension applied. , The hermeticity in each closed state can be ensured. In particular, in the case of the opening / closing door having the slit, when the opening / closing door is opened, the door weight provided on the lower edge thereof is lifted upward. For this reason,
By releasing the opening force of the door, the door is automatically closed by the weight of the door weight, so that the door can be securely closed and the airtightness of the screen shutter can be maintained.

According to a fifth aspect of the present invention, there is provided a screen shutter for fire and smoke prevention, wherein the opening / closing mechanism is provided between the weight for the overlap curtain and the weight for the screen. A biasing means for biasing the overlap curtain weight in a direction to separate from the opening / closing edge, and a door weight provided on the overlap curtain weight, which engages with the door weight to be closed and closes together with the door weight, and A locking portion for holding the overlapping curtain in an overlapping state when the door is closed.

According to this configuration, by opening the opening / closing door, the overlapping curtain is maintained in the open state by the urging means, and when closing the opening / closing door, the door weight is engaged with the locking portion of the overlapping curtain weight. Since the engagement curtain closes the overlap curtain weight, the overlap curtain can be automatically closed with the engagement. As long as the closed state of the opening and closing door is maintained, the closed state of the overlapping curtain is maintained, and the closed edge of the opening and closing edge of the opening and closing door is maintained by the overlapping curtain.

[0018]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 4 show an embodiment of a fire and smoke prevention screen shutter according to the present invention. FIG. 1 is a perspective view showing the fire and smoke prevention screen shutter as a whole, and FIG. FIG. 3 is an enlarged sectional view taken along line AA in FIG. 1, and FIG. 4 is an enlarged sectional view taken along line BB in FIG.

The basic structure of the screen shutter 10 for fire and smoke prevention according to the present invention includes a noncombustible or fire resistant flexible screen curtain 12 for partitioning the interior space of a building so as to be openable and closable. A slit 14 is formed, and an evacuation opening 34 is provided on one side divided by the slit 14 to serve as the opening / closing door 16.
On both sides of the screen curtain 12 on the other side, which is divided by 4, the overlapping curtains 18 and 20 are provided to cover the slit 14 so as to sandwich the slit 14 from both sides when the door 16 is closed.

That is, the screen curtain 12 of the fire and smoke screen shutter 10 of the present embodiment is formed by superimposing the left and right screen curtains 12a and 12b, and the lower end thereof is formed by the slit 14
It has become. An opening / closing door 16 is formed on the left screen curtain 12 a side divided by the slit 14, and the slit 14 serves as an opening / closing edge of the opening / closing door 16.

The end of the right screen curtain 12b is a double-sided curtain 18 of the slit 14, and the double-sided curtain 18 is arranged on the side opposite to the open / close side of the opening / closing door 16, so that it becomes the fixed-side double-sided curtain 18. On the other hand, another overlapping curtain 20 is provided on the front side of the right screen curtain 12b so as to cover the slit 14.
Is further provided. Since this overlapping curtain 20 is arranged on the opening and closing side of the opening and closing door 16, it has an opening and closing function.

Here, the screen curtain 12 and the polymerization curtain 20 are formed of a nonflammable or fire-resistant cloth material such as a woven glass fiber cloth or a silica cloth, and have a function of blocking flame and smoke. have.

A door weight 22 is attached to the lower edge of the opening / closing door 16 and the overlapping curtain 2 on the opening / closing side is provided.
A weight 24 for the overlap curtain is attached to the lower edge of the zero. A screen weight 26 is provided on the lower edge of the screen curtain 12 excluding the opening / closing door 16 and the overlapping curtain 20.
Is attached. Then, between the door weight 22 and the screen weight 26 and the overlap curtain weight 24
Hinge member 28 between the screen weight 26 and
30 are provided. Each of the above weights 22, 24, 26
Are arranged in a straight line in the horizontal direction.

The opening / closing door 16 is located between the slit 14 and the lower edge of the screen curtain 12 and has a triangular shape.
The slit 14 is formed to be freely bendable along an oblique side 32 extending straight from the upper end of the slit 14 along the diagonally lower left direction. When the back surface of the opening / closing door 16 is pushed by a hand or a body so as to open in the evacuation direction, the opening / closing door 16 is bent along the oblique side 32 as shown in FIG. 2 together with the door weight 22 attached to the lower edge. When pushed out to the front side of the screen curtain 12, an opening is formed in the slit 14, which is sufficient for a person to pass through.

The door weight 22 is provided on the opening / closing door 16.
Is pushed upward by the hinge member 28 as a center, so that the evacuees pass through and the door 1 is opened.
When the pressing force of No. 6 is released, it moves to return to the original position by its own weight, and the slit 14 is closed again.

By the way, the overlapping curtain 20 on the opening / closing side opens with the opening movement of the opening / closing door 16, and when the opening / closing door 16 is closed, the closing movement of the opening / closing door 16 does not become an obstacle. When the opening and closing door 16 is closed, the overlapping curtain 20 needs to be closed at the same time. For this reason,
As shown in FIGS. 3 and 4, between the weight 24 for the curtain and the weight 26 for the screen, the curtain 20 is opened with the opening and closing of the door 16 and the door 1 is opened.
6, an opening / closing mechanism 36 for closing the overlapping curtain 20 with the closing of
Is provided. The opening / closing mechanism 36 includes a spring 3 serving as an urging means for urging the overlap curtain weight 24 to the open side.
8, provided on the overlap curtain weight 24, engaged with the closing weight of the door weight 16, and closed with the closing weight.
A locking portion 40 for holding the overlap curtain 20 in the closed state when the door 16 is closed.

The spring 38 is attached across the two attachment portions 30a and 30b of the hinge member 30, and when the closing force of the spring 38 is released, the spring 38 shown in FIG.
As shown in (1), the overlap curtain weight 24 is opened to function to maintain the opening position in a substantially right angle direction. The locking portion 40 is formed in an L shape, one side 40a of which is attached to the back side of the overlap curtain weight 24, and the other side 40b projects at a right angle to the front end of the door weight 22. Therefore, as shown in FIG. 3, when the door 16 is closed, the front end of the door weight 22 is connected to the other side 40 of the locking portion 40.
b to prevent the overlapping curtain 20 from opening, and when the door 16 is closed, the tip of the door weight 22 engages with the other side 40b as shown in FIG. With the closing force of the door 16, the overlap curtain 2 together with the overlap curtain weight 24.
0 is closed.

The screen curtain 12 is usually wound up and stored in a winding device installed behind the ceiling, not shown.
When the fire occurs, the weights 22, 24, and 26 are fed out of the winding device by their own weight, and partition the internal space of the building. Further, the screen curtain 12 can be stored by folding.

With the above configuration, the screen shutter 10 for fire and smoke prevention of the present embodiment has the screen curtain 1.
The opening / closing door 16 of the evacuation opening 34 formed in the slit 2 is formed by a slit 14 formed upward from the lower edge of the screen curtain 12.
And the oblique side 32 having one side as a side, the triangular shape is formed. When the opening and closing door 16 is opened, it is bent along the oblique side 32 so that the evacuation opening 34 can be easily opened. And she can evacuate quickly.

When the door 16 is closed, a slit 14 serving as an opening / closing edge of the door 16 is provided.
Is covered with a double structure so as to be sandwiched between the overlapping curtains 18 and 20 provided on the screen curtain 12, so that the airtightness can be greatly improved. Therefore, the door 1
The opening / closing edge portion 6 is provided with a gap between itself and one of the overlapping curtains 18 or 20 even when the other overlapping curtain 20 or 18 is formed.
As a result, it is possible to prevent air from entering the fire side from the opening and closing door 16 to improve the fire prevention function, and to prevent smoke generated by a fire from flowing out of the opening and closing door 16 to prevent smoke. Function can be improved. Further, since the screen curtain 12 only has the flexible overlap curtains 18 and 20, it is possible to prevent the screen curtain 12 from being hindered from being wound or folded even when the screen shutter 10 is stored. be able to.

The door weight 22, the overlap curtain weight 24, and the screen weight 26 are provided at the lower edges of the opening / closing door 16, the overlap curtain 20, and the screen curtain 12, so that these weights 22, 24, 26 are provided. As a result, a predetermined tension is applied to each of them, so that the opening / closing door 16, the opening / closing curtain 20 on the opening / closing side, the screen curtain 12, and the overlapping curtain 18 on the fixed side maintain their flatness and hang down vertically. Will be retained. The hinge member 28 is provided between the door weight 22 and the screen weight 26, and the hinge member 30 is provided between the overlap curtain weight 24 and the screen weight 12, so that the door 16 and The overlap curtain 20 can be opened and closed stably in a state where tension is applied, and the hermeticity in each closed state can be ensured.

Since the opening / closing mechanism 36 is provided between the weight 24 for the curtain and the weight 26 for the screen, the curtain 20 is opened with the opening and closing of the door 16 and the opening and closing of the door 16 The closing curtain 20
Can be automatically closed. Therefore, the opening / closing mechanism 3
6, when the opening / closing door 16 of the evacuation opening 34 is opened, the overlapping curtain 20 in the opening direction is in an open state, so that when the opening / closing door 16 is next closed, the overlapping curtain 20 does not become an obstacle, and When the opening / closing door 16 is closed, the overlapping curtain 20 is closed. Therefore, it is not necessary to open and close the overlapping curtain 20 each time the opening and closing door 16 is opened and closed, and the airtightness of the slit 14 can be maintained.

Further, since the door 16 is bent along the oblique side 32, when the door 16 is opened, the door weight 22 provided at the lower edge thereof is lifted upward with the hinge member 28 as a center. Therefore, by releasing the opening force of the door 16, the door 16 is moved to the door weight 2.
After being automatically closed by its own weight and being evacuated from the evacuation opening 34, the opening / closing door 16 can be securely closed to maintain the airtightness of the screen shutter 10.

In the opening / closing mechanism 36, the front end of the door weight 22 is engaged with the other surface 40b of the locking portion 40.
Although the case where the closed state of the overlap curtain 20 is maintained is disclosed, the action line connecting both ends of the spring 38 that biases the overlap curtain 20 in the opening direction is inward from the center of opening of the hinge member 30. By configuring to be located in
The closed state of the overlap curtain 20 can be held by the spring 38. The opening / closing mechanism 36 is a spring 3
The present invention is not limited to the configuration of the present embodiment including the lock 8 and the locking portion 40, and other configurations can be adopted as long as the functions are enjoyed.

Further, a case has been disclosed in which the opening and closing door 16 is formed in a triangular shape by forming the slit 14 extending upward.
By changing the shape of the slit 14 without being limited to this, the opening / closing door 16 can have an arbitrary shape. Of course, even when the door 16 has an arbitrary shape, the overlapping curtains 18 and 20 are provided along the shape of the slit 14.

[0036]

As described above, according to the fireproof and smokeproof screen shutter of the present invention, the overlapping curtain is provided at the opening / closing edge of the opening / closing door formed on the screen curtain, and this overlapping portion covers the opening / closing edge. Therefore, the airtightness of the opening / closing door can be improved with a simple structure, and the original fire prevention function and smoke prevention function can be greatly improved.

An opening / closing mechanism is provided on the overlapping curtain to separate the overlapping curtain from the opening / closing edge when the opening / closing door is opened, and to overlap the overlapping curtain with the opening / closing edge when the opening / closing door is closed. Since they can be combined, an excellent effect that the airtightness of the open / close edge of the open / close door can be maintained without operating the overlap curtain each time is exhibited.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a screen shutter for fire and smoke protection according to an embodiment of the present invention.

FIG. 2 is a perspective view of the fireproof and smokeproof screen shutter according to the embodiment of the present invention when an open / close door is opened.

FIG. 3 is an enlarged cross-sectional view taken along line AA in FIG. 1 showing one embodiment of the present invention.

FIG. 4 is an enlarged sectional view taken along line BB in FIG. 2 showing one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Screen shutter for fire and smoke prevention 12 Screen curtain 14 Slit 16 Opening / closing door 18 Fixed side overlapping curtain 20 Opening / closing side overlapping curtain 22 Weight for door 24 Weight for overlapping curtain 26 Weight for screen 28, 30 Hinge member 32 Oblique 34 Evacuation exit 36 opening / closing mechanism 38 spring (biasing means) 40 locking portion

Claims (5)

[Claims] A fireproof and smokeproof screen shutter comprising a nonflammable or fireproof flexible screen curtain for partitioning an interior space of a building so as to be openable and closable, wherein the screen curtain is provided with an opening / closing door. A screen shutter for fire and smoke prevention, characterized in that a curtain is provided along the opening and closing edge of the opening and closing door to cover the opening and closing edge when the opening and closing door is closed. 2. The overlapping curtain is separated from the opening / closing edge with the opening and closing of the opening / closing door, and the overlapping curtain is overlapped with the opening / closing edge with the closing of the opening / closing door. 2. The screen shutter for fire and smoke prevention according to claim 1, further comprising an opening / closing mechanism. 3. The screen curtain, wherein the opening and closing door is a portion of the screen curtain that can be bent by a lower edge of the screen curtain and a slit formed upward from the lower edge. 3. The screen shutter for fire and smoke prevention according to 2. 4. A screen weight is attached to a lower edge of the screen curtain, a door weight is attached to a lower edge of the opening / closing door, and a polymer curtain weight is attached to a lower edge of the overlap curtain. 4. The screen shutter according to claim 1, wherein a hinge is provided between the weight and the screen weight and between the overlap curtain weight and the screen weight. 5. The opening / closing mechanism is provided between the weight for the overlap curtain and the weight for the screen, and is provided in a direction for separating the weight for the overlap curtain from the opening / closing edge in response to opening movement of the opening / closing door. A biasing means for biasing, and a weight for the overlap curtain, which engages with the weight for the door to be closed and closes together therewith, and holds the overlapped state in the overlapped state in the closed state of the door. The screen shutter for fire and smoke prevention according to claim 4, comprising a locking portion.