JP2001129108A - Screen device for fire limit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screen device for a fire limit for fixing an evacuation door in a closed state so as not to open when surrounding environment goes into such a high temperature state where people cannot live. SOLUTION: An engaging pin 18 provided on the side of the evacuation door of a screen device 2 for a fire limit is fitted into engaging holes 26a and 28a when the evacuation door is closed. In the periphery of these, a lock plate 24 is arranged obliquely. One end part of the plate 24 is freely rotatably engaged with a fixing piece part 26 by a normal metallic machine screw 33. Further, the other end part of the plate 24 is engaged by a machine screw 33 formed of a thermal melting material such as synthetic resin. When an ambient temperature is raised, a machine screw 31 is melted to release the plate 24, and the plate 24 is fitted into a notch groove part 22 formed at the upper surface part of the outer periphery of the pin 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen device for a fire-prevention compartment, in which a fire-prevention screen curtain is hung from a ceiling in a fire or the like to block a flame or smoke. The present invention relates to an apparatus having a mouth and an evacuation door for opening and closing the mouth.

[0002]

2. Description of the Related Art In order to prevent the spread of fire and the spread of smoke in the event of a fire, and to facilitate evacuation, a fire protection compartment and a smoke prevention compartment are required according to a certain floor area or room use. Set. Conventionally, a fire prevention facility such as a fire prevention partition, a smoke prevention hanging wall, a fire prevention shutter and a fire prevention door has been used for setting the fire prevention section and the smoke prevention section. These fire protection systems build strong steel walls to partition the interior space and block fire and smoke. Further, these fire prevention equipments are provided with an evacuation opening and an evacuation door for opening and closing the evacuation opening so that people can evacuate.

[0003] Incidentally, the larger the number of equipments for partitioning the indoor space, the better the fire prevention performance and smoke prevention performance, and thus it is preferable. However, it is not possible to set up many partitions ignoring the original functionality of the building. Conventional fire prevention equipment requires a large installation space and large implementation costs, and it is difficult to ensure design consistency with the wall surface and ease of evacuation in an emergency. I was bothering.

[0004] Therefore, a screen device for a fire compartment has recently emerged as a new fire-prevention facility replacing them. In this device, a fireproof screen curtain made of fire-resistant or non-combustible cloth is hung from the ceiling to partition the indoor space and to shut out fire and smoke. The major features of this device are that since it uses a very thin cloth material to block fire and smoke, it requires only a small installation space, is easy to install, and can be installed at low cost. Also,
Harmony in design with the wall is also easy.

The fire screen curtain is provided with an evacuation opening for evacuation of people and an evacuation door for opening and closing the evacuation opening, as in the case of conventional fire protection equipment. The evacuation door is made of fire-resistant or non-combustible cloth, similar to the fire screen curtain.
The surface can be easily opened by simply pressing the surface lightly.

[0006]

The role required of a screen device for a fire protection compartment is to ensure that fire and smoke are shut off in an emergency to prevent fire spread, and that people are evacuated, as in the case of conventional fire protection equipment. It does not hinder the situation. For this purpose, evacuation openings and evacuation doors are provided to enable people to evacuate.

However, as the fire progresses, the evacuation door of the screen device for the fire compartment is lighter and more flexible than the fire shutter and the steel evacuation door provided in the fire door, so that the fire evolves with the progress of the fire. It is easily opened by the air current and wind. If this happens,
It is no longer possible to reliably shut out fire and smoke, and it cannot fulfill one important role in preventing fire spread and the spread of smoke.

The evacuation door is normally kept closed by a magnet. When the surface is lightly pressed, the magnet is released and easily opened. However, when the surrounding temperature increases, the attraction force of the magnet decreases, and the evacuation door may easily open even without pressing.

The present invention has been made in view of such circumstances, and an object of the present invention is to keep an evacuation door closed when a fire becomes intense and the surrounding temperature falls to a high temperature. It is an object of the present invention to provide a screen device for a fire protection compartment that can be used.

[0010]

According to the present invention, there is provided a screen device for a fire-prevention compartment, which comprises a fire-prevention screen curtain that hangs down from a ceiling to partition an indoor space.
A screen device for a fire-prevention compartment provided with an evacuation opening provided in the fire-prevention screen curtain through the fire-prevention screen curtain and an evacuation door formed of a fire-resistant or non-combustible cloth material for opening and closing the evacuation opening. A heat sensitive means for sensing a temperature rise; and a door lock means for locking the evacuation door in a closed state when the heat sensitive means senses the heat.

In this device, the following (A) to
It is preferable to carry out according to (D). (A) The heat-sensitive means is constituted by a heat-melting member such as a synthetic resin which melts at a predetermined temperature. (B) The door locking means is interposed between the fireproof screen curtain side and the evacuation door side, and is engaged with each other so as to be detachably engaged with each other to hold the evacuation door in a closed state. Is done. (C) the engagement means includes a latch groove interposed between the fireproof screen curtain side and the evacuation door side, and a latch member that fits into the latch groove and locks the evacuation door; The member fits into the latch groove due to the melting of the heat melting member. (D) Guide means for guiding the latch member to the latch groove is provided.

[0012]

FIG. 1 shows an embodiment of a screen device for a fire protection compartment according to the present invention. The fire-prevention compartment screen device 2 includes a fire-prevention screen curtain 4 that is drawn out from a take-up shaft 6 at the ceiling and hangs down in an emergency such as a fire to partition an indoor space and block fire and smoke. The fireproof screen curtain 4 is formed of a non-combustible or fire-resistant flexible cloth material such as a woven glass fiber cloth or silica cloth, and is normally wound around the winding shaft 6 and stored in the ceiling. Is done. Weight bars 8a and 8b are mounted horizontally on the lower edge of the fire protection screen curtain 4 to smoothly perform the feeding operation and hold the curtain 4 in a tensioned state. A slit 10 is formed upward from the center of the lower end of the fire protection screen curtain 4 to divide the fire protection screen curtain 4 and the weight bar 8 left and right.

The divided right weight bar 8b is further divided into left and right parts, and the two divided weight bars 8b are divided into two parts.
c and 8d are connected via a hinged member 12 such as a hinge,
The left weight bar 8c is provided so as to rotate toward the back side of the fire screen curtain 4 with the connection portion as a fulcrum.

When the left side edge of the fire screen curtain 4 on the right side is lightly pressed, the weight bar 8c pivots in the direction of the back of the curtain with the connecting portion as a fulcrum, and this portion is connected to the upper end of the slit 10 and the weight bar 8c. , 8d are bent in a triangular shape about the line connecting the connecting portions, and are pushed out to the back side of the fireproof screen curtain 4. By this extrusion, a gap large enough to allow one person to pass is formed between the fireproof screen curtains 4 on both sides of the slit 10, and the gap becomes the evacuation opening 14. In addition, the portion that is bent in a triangular shape is the evacuation door 16.
Becomes Therefore, the evacuation door 1 can be easily used even with human hands or shoulders.
6 can be opened.

The weight bar 8 at the lower end of the evacuation door 16
c (hereinafter, referred to as a door weight bar) is lifted slightly upward when being rotated to the back side of the fire protection screen curtain 4, and when its surface is released from pressing, it moves downward due to its own weight, Return to the original position. That is, the evacuation door 16 is automatically closed after the person has passed the fire screen curtain 4. Further, since the fireproof screen curtains 4 on both sides of the slit 10 are set to overlap with each other with a predetermined width, when the evacuation door 16 is closed, there is no need to form a gap between them.

FIG. 3 shows a portion where the left weight bar 8a (hereinafter referred to as a left main weight bar) divided by the slit 10 and the door weight bar 8c are engaged. The left main weight bar 8a and the door weight bar 8c are each formed of a band-shaped washer, and an engagement portion for preventing the displacement of the evacuation door 16 is provided between them. The engaging portion includes a cylindrical engaging pin 18 provided integrally with the door weight bar 8c,
An engagement hole 20 is provided at the right end of the left main weight bar 8a. The engagement pin 18 is disengaged from the engagement hole 20 according to the opening and closing of the evacuation door 16. There is some room between the engagement pin 18 and the engagement hole 20.

Further, an annular magnet 21 is provided around the root of the engaging pin 18. The magnet 21 is magnetically attracted to a metal portion around the opening of the engaging hole 20 to bind the door weight bar 8c to the left main weight bar 8a. The attraction force of the magnet 21 is set to be weak enough to easily detach when a person opens the evacuation door 16 and to keep the evacuation door 16 from opening with a small impact.

In this embodiment, a lock mechanism for fixing the engaging pin 18 so as not to come off from the engaging hole 20 is provided at a portion where the engaging pin 18 and the engaging hole 20 are engaged. . 4 to 6 show this lock mechanism.
4 is an exploded view, FIG. 5 is a sectional view when viewed from above, and FIG. 6 is a front view.

The lock mechanism includes a cutout groove 22 formed on the outer peripheral upper surface of the engagement pin 18 and a lock plate (latch member) 24 fitted into the cutout groove (latch groove) 22 from above. The notch groove portion 22 is cut at a right angle to the engaging / disengaging direction of the fitting pin 18, that is, the opening / closing direction of the evacuation door 16.

The lock plate 24 includes a mounting piece 26 formed by bending a left end of the left main weight bar 8a into a crank shape, and a guide plate 28 provided integrally with the mounting piece 26. It is interposed between.
Holes 26a and 28a are formed coaxially at the center of the mounting piece 26 and the guide plate 28 as the engagement holes 20, respectively. Here, the guide plate 28 is a metal plate member and is attached with four screws 27 while forming a gap between the guide plate 28 and the attachment piece 26 via a spacer 29, and the engagement pin 18 is fitted into the engagement hole 20. The magnet 21 is attracted to the back surface when it is touched.

The lock plate 24 is locked to the mounting piece 26 by two screws 31, 33 through through holes 24a formed at both ends. One of the screws 31 is a screw formed of a hot-melt material such as a hot-melt resin or a metal having a low melting point, and melts out when the surrounding temperature increases. The melting temperature of the screw 31 is set to, for example, about 70 ° C. to 350 ° C.

The other screw 33 is an ordinary metal screw,
The lock plate 24 is loosely inserted into the through hole 24a of the lock plate 24 to lock the lock plate 24 rotatably. The lock plate 24 is disposed obliquely above the notch groove 22. The notch groove portion 22 of the engagement pin 18 is located directly below the lock plate 24 when the engagement pin 18 is fitted in the engagement hole 20.

When the ambient temperature reaches a predetermined temperature, the screws 31 formed of the hot-melt material begin to melt, so that the lock plate 24 cannot be fully locked and the lock plate 24 is released. The lock plate 24 falls while rotating downward by its own weight, and is fitted into the notch groove portion 22. At this time, the lock plate 24 is guided by a gap between the guide plate 28 and the mounting piece 26.

FIG. 7 shows a state in which the lock plate 24 is dropped into the notch groove portion 22. Lock plate 2
4 engages with the fitting pin 18 at right angles to the engaging and disengaging direction, and prevents the engaging pin 18 from coming out of the engaging hole 20. As a result, the door weight bar 8c is coupled to the left main weight bar 8a, and the evacuation door 16 cannot be completely opened. Therefore, the fire-screening screen device 2 can play a role of blocking fire and smoke, and preventing the spread of fire and the diffusion of smoke.

FIG. 8 shows another locking method of the lock plate 24. Here, the screw 31 formed of the hot-melt material is inserted into the through hole 24 at the end of the lock plate 24.
Instead of being inserted through a, the lock plate 24 is locked from below to prevent falling.

The evacuation door of the screen device for a fire protection compartment according to the present invention is not limited to the opening and closing system of the above embodiment, but may be a sliding system, a folding system or another opening and closing system. Further, the heat sensitive means of the present invention may be constituted by a string member formed of a heat melting material for locking the lock plate 24 and the like, in addition to the screw 31.

[0027]

According to the screen device for a fire protection compartment according to the present invention, the following operation and effect can be obtained. (1) In the screen device for a fire prevention compartment according to claim 1, when the surrounding temperature rises and falls into a high temperature state, the temperature sensing means senses this, and
In response, the door locking means locks the evacuation door in the closed state. As a result, the evacuation door is not completely opened even when a large pressure is applied due to air convection generated by a fire or inflow of outside air, and is completely locked. For this reason, there is no fear that the evacuation door is accidentally opened and the sealing performance is impaired.
Fire and smoke can be reliably blocked to prevent the spread of fire and the spread of smoke.

(2) In the screen device for a fire protection compartment according to the second aspect, the heat sensitive means is made of a heat melting member such as a synthetic resin which melts at a predetermined temperature.
The heat responsive means can be configured simply and inexpensively.
Thereby, an increase in cost can be suppressed.

(3) In the screen device for a fireproof compartment according to the third aspect, the door locking means is interposed between the fireproof screen curtain side and the evacuation door side, and is engaged with each other freely. The evacuation door can be securely locked in the closed state by being configured with the engagement means for holding the evacuation door in the closed state. As a result, the evacuation door is fixed in an incomplete state, and there is no fear that the flame or smoke leaks.

(4) In the screen device for a fire protection compartment according to the fourth aspect, a latch groove provided between the fire screen curtain side and the evacuation door side, and the evacuation is performed by fitting into the latch groove. A heat sensitive means and a door lock means are provided with a simple structure and at a low cost by providing a latch member for locking a door, wherein the latch member is fitted into the latch groove by melting of the heat melting member. And does not cause a significant cost increase.

(5) In the screen device for a fire prevention compartment according to the fifth aspect, since the guide means for guiding the latch member to the latch groove is provided, the latch member can be securely inserted into the latch groove. The evacuation door can be guided and locked properly.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing a state when an evacuation door of the screen device for a fireproof compartment of FIG. 1 is opened.

FIG. 3 is a perspective view showing a portion where a left main weight bar and a door weight bar of the screen device for a fire prevention compartment according to the present invention are joined.

FIG. 4 is an exploded view showing a lock mechanism of an evacuation door of the screen device for a fire protection compartment according to the present invention in an exploded manner.

FIG. 5 is a cross-sectional view of the locking mechanism of the evacuation door of the screen device for a fire prevention compartment according to the present invention when viewed from above.

FIG. 6 is a view of the lock mechanism of the evacuation door of the screen device for a fire protection compartment according to the present invention when viewed from the front.

FIG. 7 is a perspective view showing a state when the evacuation door of the screen device for a fire prevention compartment according to the present invention is locked.

FIG. 8 is a front view showing another embodiment of the lock mechanism of the evacuation door of the screen device for a fire prevention compartment according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 2 Screen device for fire prevention compartment 4 Fire prevention screen curtain 6 Winding shaft 8a, 8b, 8c, 8d Weight bar 10 Slit 12 Pivot member 14 Evacuation port 16 Evacuation door 18 Engagement pin 20 Engagement hole 21 Magnet 22 Notch groove (latch) Groove) 24 Lock plate (latch member) 26 Mounting piece 28 Guide plate 31 Screw (heat sensitive means) 33 Screw

Claims (5)

[Claims] 1. A fire screen curtain hanging from a ceiling to partition an indoor space, an evacuation port provided in the fire screen screen through the fire screen screen curtain, and a fireproof or A screen device for a fire-prevention compartment provided with an evacuation door made of a non-combustible cloth material, wherein a heat-sensitive means responsive to a rise in temperature, and the evacuation door is locked in a closed state when the heat-sensitive means is responsive. A screen device for a fire prevention compartment, comprising: a door locking means. 2. The screen device for a fire protection compartment according to claim 1, wherein the heat sensitive means is formed of a heat melting member such as a synthetic resin which melts at a predetermined temperature. 3. The door lock means is provided between the fire screen curtain side and the evacuation door side, and is engaged with each other so as to be detachably engaged with each other to hold the evacuation door in a closed state. The screen device for a fire protection compartment according to claim 1, wherein the screen device is configured. 4. The engaging means includes a latch groove interposed between the fireproof screen curtain side and the evacuation door side, and a latch member that fits into the latch groove and locks the evacuation door, 4. The latch member according to claim 3, wherein the latch member fits into the latch groove by melting of the heat melting member.
A screen device for a fire protection compartment according to claim 1. 5. The screen device according to claim 4, further comprising guide means for guiding the latch member into the latch groove.