JP2002357065A - Screen shutter for fire and smoke prevention - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screen shutter for fire and smoke prevention, by which a seat board is not floated even when a screen body is pushed and fire and smoke preventive functions are maintained while a refuge port is opened surely by pushing an open-close door and in which the seat board is not an obstacle to refugees. SOLUTION: A screen 11 in which the seat board 24 is installed at the lower end of the noncombustible or fire-resistive flexible screen body 12 is suspended from a ceiling 30 and the internal space of a building is partitioned. The screen 11 has a stepping-pressure sheet 26, and the stepping-pressure sheet 26 prevents the floating of the seat board 24 by stepping. The open-close door 16 is mounted on the screen 11, and the stepping-pressure sheet 26 is secured around at least the open-close door 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen shutter for fire and smoke protection which is formed of a non-combustible or fire-resistant curtain and partitions the interior space of a building to prevent the spread of the building and the diffusion of smoke. Regarding improvement.

[0002]

2. Description of the Related Art Conventionally, there is known a screen shutter for fire prevention and smoke prevention using a nonflammable or fire-resistant curtain in order to shut off a flame or smoke in preparation for a fire.

[0003] This fire and smoke screen shutter is
The curtain body, which is rich in noncombustibility or fire resistance and has flexibility, is drawn out from a winding shaft provided on a ceiling and hangs down.
A seat plate serving as a weight is attached to this curtain body over the entire width of the lower end, so that the curtain body can be prevented from swinging and its posture can be maintained in a stable state. As a result, the fire and smoke screen shutter partitions the indoor space of the building and can block fire and smoke.

[0004] The fire and smoke screen shutter is provided with an opening / closing door so that a person can pass through and evacuate even after the screen shutter is closed. This opening / closing door has a slit provided upward from the lower end of the curtain, and one curtain divided by the slit is formed so as to be obliquely bendable from the upper end of the slit. That is, those who evacuate through the door open and evacuate through the evacuation opening formed by pushing and opening the curtain that forms the door.

[0005]

However, since the swinging of the curtain body is only suppressed by the seat plate attached to the lower end, the curtain members are gathered in the vicinity of the fire and smoke prevention screen shutter in search of an evacuation opening. There is a possibility that the original function of the fire and smoke prevention screen shutter, in which the body is pushed and the seat plate rises to block the flame and smoke, is reduced. Also, when trying to open the door to secure the evacuation exit, not only the door but also the entire curtain is pushed,
The opening / closing door is not sufficiently opened, and even if the evacuation opening is opened, the seat plate is lifted up, and there is a possibility that a person trying to evacuate in a hurry may be obstructed.

Accordingly, the present invention has been made in view of such conventional problems, and the seat plate does not rise even when the curtain is pushed, so that the fire and smoke prevention function is maintained, and the opening and closing door is securely pushed. An object of the present invention is to provide a screen shutter for fire and smoke prevention in which an evacuation opening is opened and a seat plate does not hinder evacuees.

[0007]

In order to achieve the above object, a fireproof and smokeproof screen shutter according to claim 1 has a seat plate attached to a lower end of a nonflammable or fireproof flexible curtain. In a fireproof and smoke-proof screen shutter in which the screen is hung from the ceiling to partition the interior space of the building, a stepping sheet that covers the floor in a state where the screen is hung and prevents the seat plate from floating by being stepped on. It is characterized by having.

According to the first aspect of the present invention, in a state where the screen hangs down and partitions the interior space of the building, the treading sheet provided on the screen covers the floor. You will step on the foot pressure seat. That is, the stepped-on pressure seat is pressed against the floor by the weight of the person, and the seat plate can be prevented from being lifted up together with the screen provided with the foot-pressed sheet. Therefore, even if the person's body presses the screen, the seat plate does not rise and the interior space of the building is kept partitioned.

In a second aspect of the present invention, the screen is provided with an opening / closing door, and the tread sheet is provided at least around the opening / closing door.

According to the second aspect of the present invention, the stepping pressure sheet is provided around the opening / closing door, that is, at a position where the operator naturally steps on the door when opening the opening / closing door. Therefore, the seat plate is pressed against the floor by the person who opens the door, stepping on the tread sheet, and the screen does not swing, so that the door can be easily and reliably opened. Further, when passing through the opening formed by opening the opening / closing door, the seat plate is pressed against the floor and does not float, so that there is no obstacle to the passing person.

[0011]

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 screen shutter for fire and smoke prevention according to the present invention.
2 is a perspective view showing the entire screen shutter for fire and smoke prevention, FIG. 2 is a perspective view when the door of the screen shutter for fire and smoke prevention is opened, FIG. 3 is a side view of FIG. 1, and FIG. FIG. 2 is a cross-sectional view showing a state in which a screen shutter for a vehicle is stored in a ceiling.

The screen 11 of the fire and smoke screen shutter 10 (hereinafter referred to as a screen shutter) of the present invention has two curtains 12 having incombustibility or fire resistance, which are arranged on the left and right sides. A seat plate 24 to be described later is provided at the lower end. The screen 11 has an overlapped portion 15 in which the ends on the center side of the two curtains overlap each other.
The upper side is joined to each other and the lower side forms a slit 14. Curtain 12 on the left side of this slit 14
The opening / closing door 16 is formed in a, and the slit 14 is an opening / closing edge of the opening / closing door 16. The overlapping portion 15 of the right curtain 12b covers the opening / closing edge of the slit 14 so as to keep the screen shutter 10 closed.

The curtain body 12 is made of a nonflammable or fire-resistant cloth material such as a woven glass fiber cloth or a silica cloth, and has a function of blocking fire and smoke. I have.

The opening / closing door 16 has a triangular shape formed so as to be freely bent along an oblique side 32 extending straight from the upper end of the slit 14 along the diagonally lower left direction, and has a door weight at its lower end. 22 is attached. The seat plate 24 is provided at the lower end of the curtain body 12 excluding the opening / closing door 16, and the seat plate 24 is attached in a straight line over the entire width of the two curtain bodies 12a and 12b, and also functions as a weight.

The seat plate 24 is made of a single rectangular steel pipe, and a pair of holding plates 24a are formed on the upper surface of the seat plate 24, facing each other in the longitudinal direction, excluding the opening / closing door 16, so as to protrude.
The lower ends of the two curtains 12a and 12b are held by 4a.

When the door 16 is pushed by a hand or a body so as to rotate in the evacuation direction, the oblique side 3 as shown in FIG.
While being bent along 2, the curtain body 12a is pushed out together with the door weight 22 attached to the lower end. As a result, the slit 14 is opened to form an opening enough for a person to pass through, and this opening is
Becomes

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.

The screen 11 is usually wound up and stored in a winding device (not shown) installed behind the ceiling 30, and is unwound from the winding device by the weight of the door weight 22 and the seat plate 24 when a fire occurs. Thus, the interior space of the building is partitioned. The screen 11 may be stored by folding.

On the seat plate 24, a step plate 26 made of a steel plate and forming a stepping sheet is rotatably provided via a hinge 36 on the side of entry into the evacuation opening 34. This step board 2
Reference numeral 6 has a width sufficiently wider than the evacuation opening 34, and is substantially horizontal when the screen 11 is extended and partitioned, and covers the floor 38 near the seat plate 24 in front of the evacuation opening 34. Therefore, when a person who wants to evacuate through the evacuation opening 34 pushes the opening / closing door 16 and evacuates, the person naturally steps on the tread plate 26 that covers the floor 38 in front of the door.
That is, the stepped tread plate 26 is pressed against the floor 38 together with the seat plate 24 by the weight of the evacuee, and the seat plate 24 does not rise, so that it does not hinder a person passing through the evacuation opening 34. At this time, the right curtain body 12b is held by the seat plate 24 and does not swing, so that the opening and closing door 16 can be easily and reliably opened by pushing the door 16.

Further, since the tip 26a of the step board 26 is bent so that the tip 26a thereof is in contact with the floor 38 and makes a gentle downward slope in a state where the step board 26 covers the floor 38, the evacuee can move to the tip. It is possible to smoothly ride on the tread plate 26 without tripping to 26a. This step board 26
In the state where the screen 11 is stored on the ceiling 30,
The curtain 12 is pivoted upward about the hinge 36, and the
It is kept tilted to the side.

The right side curtain 12 is mounted on the seat plate 24.
A deployment mechanism 40 is provided between the b and the tread plate 26 to deploy the tread plate 26 in the horizontal direction from the retracted state. The unfolding mechanism 40 includes a pressing rod 42 that can move up and down through the seat plate 26, and a projection 44 projecting toward the tread plate 26 is provided above the pressing rod 42. When the screen 11 is stored, the pressing bar 42 is locked to the seat plate 24 with its lower part protruding below the seat plate 24 by its own weight. When the screen 11 is fed out and the seat plate 24 approaches the floor 38, the lower end of the pressing rod 42 contacts the floor 38, and the seat plate 24 descends.
The protrusion 44 moves upward relative to the seat plate 24. That is, the protrusion 44 of the pressing rod 42 rises relatively to the seat plate 24, and the contact position with the tread plate 26 inclined toward the curtain body 12 moves to the tip end side of the tread plate 26, so that the tread plate 26 is in the vertical state. And the tread plate 26 is expanded in the horizontal direction by its own weight.

By providing the developing mechanism 40, the tread plate 26 can be surely developed simply by extending the screen 11 normally stored in the ceiling 30. In addition, since the deployment mechanism 40 has a simple structure in which the pressing bar 42 that moves up and down penetrates the seat plate 24, it can be reliably operated even in the event of a fire accompanied by a power failure or the like. Further, since the deployment mechanism 40 is provided between the right curtain body 12b without the opening and closing door 16 and the tread plate 26, the deployment mechanism 40 does not hinder a person passing through the evacuation opening 34.

In this embodiment, the tread plate 26 is made of one steel plate. However, as shown in FIGS.
When the doors 0a and 50b are connected to each other by a hinge 52 and are stored in the ceiling 30, they may be folded by the hinge 52. In this case, even in a limited storage space provided on the ceiling 30, the tread plate 26 that covers the wide floor 38 can be stored, and the tread plate 26 that is more reliably stepped on by the person who opens the door 16 can be used. In addition, the lifting of the seat plate 24 can be prevented.

Further, if the step board 26 is provided not only on the side to enter the opening / closing door 16 but also on the opposite side, when the evacuee who has just passed through the evacuation opening 34 separates his / her foot from the step on the side of entry, the opposite step board is provided. Therefore, the seat plate can be prevented from rising until the evacuee leaves the screen.

Further, when the step board is provided over the entire width of the screen, the step board covers the floor near the screen over the entire width when the screen partitions the internal space of the building. In other words, those who gather around the screen shutter in search of the evacuation exit naturally ride on the tread, and the lifting of the seat plate is prevented by the weight of the person. Therefore, even if the body of a person approaching the screen pushes the curtain, the seat plate does not rise, and the interior space of the building is kept partitioned, so that flames and smoke can be blocked.

In this embodiment, an example is shown in which the tread plate 26 is rotatably provided on the seat plate 24. However, as shown in FIGS. It may be provided below. Further, the tread plate is not limited to the steel plate, and may be a member having incombustibility or the like, similarly to the curtain body 12, and may be provided directly on the curtain body if floating of the seat plate can be prevented.

[0027]

As described above, according to the fireproof and smokeproof screen shutter of the present invention, a person approaching the fireproof and smokeproof screen shutter in search of an evacuation port will naturally step on the treading sheet of the screen. The lifting of the seat plate is prevented by the weight of the person. Therefore, even if the person's body pushes the screen, the seat plate does not rise and the flame and smoke can be reliably shut off.

Also, since the person who opens the opening / closing door steps on the tread sheet provided around the opening / closing door, the seat plate is pressed against the floor and the screen does not swing, and the opening / closing door is easy to open and the evacuation exit is provided. The seat plate that does not rise from the floor does not hinder a person passing through the evacuation opening.

[Brief description of the drawings]

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

FIG. 2 is a perspective view when the door of FIG. 1 is opened.

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a cross-sectional view showing a state in which a screen shutter for fire prevention and smoke prevention according to an embodiment of the present invention is stored in a ceiling.

FIG. 5 is a sectional view showing a first modification of the present invention.

FIG. 6 is a cross-sectional view showing a state in which a fire and smoke preventing screen shutter according to a first modification of the present invention is stored in a ceiling.

FIG. 7 is a side view showing a second modification of the present invention.

FIG. 8 is a top view showing a state in which a fire and smoke prevention screen shutter according to a second modification of the present invention is stored in a ceiling.

FIG. 9 is a sectional view taken along line A-A ′ of FIG. 8;

FIG. 10 is a sectional view taken along line B-B 'of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Screen shutter for fire and smoke prevention 11 Screen 12 Curtain body 16 Opening / closing door 24 Seat board 26 Tread board (Treading sheet) 30 Ceiling

 ──────────────────────────────────────────────────続 き Continued on the front page (71) Applicant 000115234 Unitika Glass Fiber Co., Ltd. 1-118-17 Minamisenba, Chuo-ku, Osaka-shi, Osaka (72) Inventor Masahiko Honma 4-640 Shimoseito, Kiyose-shi, Tokyo Obayashi Corporation Inside the Technical Research Institute (72) Inventor Hiroshi Muraoka 4-640 Shimoseito, Kiyose-shi, Tokyo Inside the Obayashi Corporation Technical Research Institute (72) Inventor Toyohide Ryuichi 2-1-1, Nishishinjuku, Shinjuku-ku, Tokyo Miwa Shutter Industry Co., Ltd. (72) Inventor Osamu Kido 1-1-4 Minami-Otsuka, Toshima-ku, Tokyo Tostem Suzuki Shutter Inc. (72) Inventor Kiyomi Yasuhara 2--12-9 Shiba-Daimon, Minato-ku, Tokyo Unitika Glass Fiber In-house F term (reference) 2E184 LC08

Claims (2)

[Claims] 1. A fireproof and smokeproof screen shutter in which a screen having a seat plate attached to a lower end of a nonflammable or fireproof flexible curtain body is hung from a ceiling to partition an internal space of a building, A fire and smoke screen shutter, comprising: a stepping sheet that covers the floor in a state where the screen is hung and prevents the seat plate from floating when stepped on. 2. The screen is provided with an opening and closing door,
The fireproof and smokeproof screen shutter according to claim 1, wherein the stepping sheet is provided at least around a door.