JPH09253229A - Fire/smoke preventing section structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a modification so as not to impair shielding performance of screen joint parts in a state where all screens are lowered while allowing the lifting or lowering or opening or closing of the individual screens in a fire/ smoke preventing section structure in which a broad and large space is partitioned by successively arranging narrow screens to a certain extent. SOLUTION: A broad and large space within a building is partitioned by fireproof and soft screens hanging down to a floor from a ceiling part. The screens are a plurality of narrow screens 11-14 which are successively arranged in the horizontal way and side end parts of adjacent narrow screens are overlapped. Individual weight bars 3 are horizontally mounted at lower ends of the narrow screens. A winder is installed at the ceiling part to lift or lower the narrow screens separately.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof / smokeproof compartment structure for preventing the spread of fire and the spread of smoke inside a building, and more particularly to a heat resistant screen made of silica cloth, glass fiber woven cloth or the like. The present invention relates to a structure in which a screen is rolled up and can be stored in the ceiling part.

[0002]

2. Description of the Related Art For example, in Japanese Utility Model Publication No. 63-41008, a screen having fire resistance, heat resistance and flexibility is used as a partitioning material, and the screen is hoisted and unwound at a suitable time by a winding device at the ceiling. The fireproof / smokeproof compartment structure of this structure is explained in detail.

In this conventional technique, a plurality of screens each having a small width are connected in series to partition a large space having a large width with a screen. The sides of each screen are arranged so that there is no gap at the seam of each narrow screen. A single continuous seat plate is horizontally attached to the lower ends of the plurality of screens continuously arranged in this way, and the lower end portions of the respective screens are integrated so that the entire screen is simultaneously raised and lowered simultaneously.

As described above, in the structure in which a wide space is divided by connecting a small width screen in a certain manner, it is easy to manufacture each small width screen, and each screen provided on the ceiling is wound. Since the device is short, it has the advantage of being easy to manufacture and install.

[0005]

However, in the above-mentioned conventional fire / smoke-proof compartment structure, one continuous seat plate is attached to the lower end of each screen to be integrated, and the whole screen is integrally raised and lowered. , With a large-scale partition, the weight of the whole screen and the seat plate at the lower end will be considerably large,
Therefore, there is a drawback that it is difficult to escape when a person is caught in a fire. In addition, the load on the lifting drive increases,
There is a problem that a powerful and large lifting drive mechanism is required, and the reliability of the operation remains uncertain. Further, since the lower end portions of the screens are connected and integrated by a continuous seat plate, there is a problem that it is not possible to individually raise and lower each small width screen. Even when partitioning a large space with a large number of small screens, it is practical and desirable to be able to partially wind the screen or conversely lower it depending on the usage situation of the large space, The conventional technology has not been able to meet such a demand.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a fire / smoke-proof partition structure for partitioning a large space by connecting a screen having a small width. The purpose is to improve each screen individually so that it can be lifted and lowered and opened and closed, and the shielding performance of the screen joints will not be impaired when all screens are lowered.

[0007]

The fireproof / smokeproof compartment structure of the present invention which achieves the above-mentioned object, has the following requirements (1) to (1).
(3) is provided. (1) A large and wide space inside the building is partitioned by a screen having heat resistance and flexibility that hangs from the ceiling portion to the floor. (2) In the screen, a plurality of small width screens are continuously arranged in the horizontal direction, and the side end portions of the adjacent small width screens overlap each other. (3) Individual weight bars are horizontally attached to the lower ends of the narrow screens.

In the above structure, a winding device for individually raising and lowering each of the narrow screens is installed on the ceiling portion.

Further, in the above structure, a winding device for individually raising and lowering each of the narrow screens is installed on the ceiling portion.

Further, in the above structure, in the overlapping portion of the adjacent small width screens, the front surface side of one of the weight bars and the rear surface side of the other weight bar are respectively cut off, and both weight bars are connected by the cut portion. With the structure in which the narrow width screens are combined with each other, the side end portions of both narrow width screens can be closely overlapped with each other.

Further, in the above construction, a plurality of slits extending in the vertical direction from the intermediate height portion to the lower portion of the at least one narrow screen can be formed at appropriate intervals to be used as an evacuation passage. Is.

[0012]

DETAILED DESCRIPTION OF THE INVENTION Fire protection according to an embodiment of the present invention
An outline of the smokeproof compartment structure is shown in FIGS. 1, 2 and 3.
In this example, four narrow screens 11, 12, 13,
By arranging 14 horizontally, a large large space inside the building is partitioned. Each of the narrow screens 11 to 14 has a width of about 8 meters and a height of about 5 meters, and the side end portions of adjacent narrow screens overlap each other with a width of about 50 cm.

Each of the narrow screens 11 to 14 is a winding device 2 built in a storage box 1 arranged at the ceiling.
Hangs from. As shown in FIG. 2, the winding device 2 is individually provided for each of the narrow screens 11 to 14,
The length of the winding shaft is about 8 meters, which is almost the same as that of each of the narrow screens 11 to 14, and there are four such short winding devices 2. Further, the adjacent winding devices 2 are arranged so as to shift to the left and right of the screen hanging surface, and the screen winding directions are opposite to each other. Therefore, even if the side end portions of the adjacent small width screens 11 and 12 are arranged to overlap each other, the two adjacent winding devices 2 can be installed without mechanical interference. Moreover, the narrow screen 11
And 12 hang on almost the same vertical plane. The winding device 2 can drive the winding shaft with a motor or the like to wind up each narrow screen and store it in the storage box 1, or conversely wind it down to partition the space by the screen.
Of course, the four winding devices 2 can be controlled individually,
Each of the four narrow screens 11 to 14 can be individually raised and lowered.

Further, as shown in FIG. 3, individual weight bars 3 are attached to the lower ends of the narrow screens 11 to 14, respectively. The weight of the weight bar 3 applies an appropriate tension to each of the narrow screens 11 to 14 so that the screens form a clean vertical surface and do not move by some wind.

Further, as shown in FIG. 3, the surface of the weight bar 3 of the narrow screen 11 is cut off at a portion where the adjacent small width screens 11 and 12 are overlapped with each other (referred to as a cut portion a), and the weight of the narrow screen 12 is cut. Cut off the back side of the bar 3 (to be the cut portion b),
By the cutout portions a and b, both weight bars 3 are combined like one continuous rod. With this configuration, the side end portions of both the narrow screens 11 and 12 can be closely contacted with each other and overlapped. Of course, the same applies to the overlapping portion between other narrow screens.

Further, as shown in FIG. 1, the narrow screen 1
A plurality of slits 4 extending vertically from the intermediate height portion to a lower portion of the slit 4 are formed at appropriate intervals, and the slit 4 forming portion serves as an evacuation passage through which a person can easily pass. That is, since each of the narrow screens 11 to 14 is made of a flexible cloth, the slit 4 of the screen 14 can be easily spread by a person's hand, and a person can easily pass through the widened gap. That is, in the state in which the narrow screen 14 is used for partitioning, the portion where the plurality of slits 4 are formed serves as an evacuation passage corresponding to a fire door. The position of this evacuation passage may be set at an appropriate position in accordance with the setting state of the evacuation route for the entire building and the usage situation in the room.

[0017]

As described above in detail, according to the present invention, each screen is individually lifted in a fire / smoke-proof compartment structure which divides a large space by connecting a small width screen. -Since it can be opened and closed, even if one person is caught in the weight bar in the event of a fire, it can be repelled, and even if it is late to escape, the weight bar can be lifted and slip through. Depending on the usage situation of the large space partitioned by the continuous screen, the screen can be partially rolled up or, conversely, partially lowered, which is extremely practical. In addition, the individual winding device for each small width screen is short and small in size, which makes it easy to manufacture and install it on site. If the weight bar individually attached to the lower end of each narrow screen is combined like one bar, both screens will overlap closely at the joints of each narrow screen when the entire screen is lowered. Therefore, the shielding performance of the seam, that is, the performance as a fire / smoke-proof partition material is not impaired.

[Brief description of drawings]

FIG. 1 is a front view showing the outline of a fireproof / smokeproof compartment structure according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a relationship between two small-width screens in the same embodiment.

FIG. 3 is a schematic perspective view showing the relationship of weight bars at the lower ends of two small-width screens in the same embodiment.

[Explanation of symbols]

 11-14 Small-width screen 1 Storage box 2 Winding device 3 Weight bar 4 Slits a, b Weight bar cutout part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Miyake 4-640 Shimoseido, Kiyose City, Tokyo Obayashi Corporation Tokyo Head Office

Claims (4)

[Claims] 1. A fireproof / smokeproof compartment structure having the following requirements (1) to (3). (1) A large and wide space inside the building is partitioned by a screen having heat resistance and flexibility that hangs from the ceiling portion to the floor. (2) In the screen, a plurality of small width screens are continuously arranged in the horizontal direction, and the side end portions of the adjacent small width screens overlap each other. (3) Individual weight bars are horizontally attached to the lower ends of the narrow screens. 2. The fire / smokeproof compartment structure according to claim 1, wherein a winding device for individually raising and lowering each of the narrow screens is installed on the ceiling portion. 3. The front side of one of the weight bars and the back side of the other weight bar are cut away from each other in the overlapping portions of the adjacent small width screens according to claim 1 or 2, and are cut by the cut portions. Both weight bars are combined like a continuous bar,
A fire and smoke compartment structure in which the side edges of both narrow screens are in close contact with each other and overlap. 4. The method according to claim 1, wherein
A fire / smoke-proof compartment structure, characterized in that at least one of the narrow screens has a plurality of slits extending vertically from a middle height portion to a lower portion thereof at appropriate intervals to form an evacuation passage.