JP2003262081A - Fire resistant sheet shutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire resistant sheet shutter which opens/closes an opening by reeling/unreeling a sheet reeled on a takeup shaft, wherein the fire resistant sheet unreeled from the shaft can be smoothly guided and lowered to a predetermined location (shutter core) of the opening. <P>SOLUTION: The fire resistant sheet shutter comprises a smoother member 3 for lowering the fire resistant sheet 2 unreeled from the takeup shaft 1 to the predetermined location of the opening, and the smoother member 3 is formed of a stainless steel pipe 3a which is fixed and extended along an upper portion of a lintel member 4. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a fireproof sheet shutter for mainly closing an opening inside a building. 2. Description of the Related Art In recent years, a fireproof sheet shutter using a nonflammable fireproof sheet made of silica fiber or the like, which can cope with a large opening, is used instead of a steel fireproof shutter at the opening inside a building. Has been adopted. [0003] However, especially in a fireproof sheet shutter having a large opening, it is necessary to provide a smoother shaft or the like as disclosed in Japanese Utility Model Application Laid-Open No. 62-124194 (shaft bending). Is too big)
Due to the difficulty, it has been difficult to smoothly lower the fireproof sheet (shutter curtain) to a predetermined position (shutter core). (Hereinafter, in the present application, a member having a function of guiding a shutter curtain to a shutter core, such as the above-described smoother shaft, is referred to as a smoother member.) An object of the present invention is a simple structure. It is another object of the present invention to provide a fireproof sheet shutter that can smoothly guide and descend a fireproof sheet to a shutter core. [0004] In order to solve the above-mentioned problems, a technical means adopted by the present invention is a method for winding a sheet wound around a winding shaft, which is installed above an opening inside a building. In the fireproof sheet shutter that opens and closes the opening by taking out and feeding, a smoother member for lowering the fireproof sheet fed from the winding shaft to a predetermined position of the opening,
The stainless steel pipe is extended and fixed above the lintel member. Embodiment 1 of the present invention will be described with reference to FIGS. 1 and 2. A take-up shaft 1 extending in the left-right direction is suspended above the opening inside the building that serves as a fire protection section. The opening is opened and closed while the left and right ends are guided by guide rails 11 erected on the left and right sides of the opening.
Here, reference numeral 20 denotes a beam 20 which is a structural material of a building.
0, a shutter mounting base 21 made of a square steel pipe, an equilateral mountain-shaped steel, or the like is fixed, and a pair of brackets 12 are mounted on the shutter mounting base 21, and the winding between the brackets 12, 12 is performed. The shaft is suspended. 4 is a lintel receiving member 4a and a reinforcing angle member 4 which are bridged between the brackets 12, 12.
b, a lintel member 4 composed of an inner lintel 4c. 3 is a smoother member 3 comprising a stainless steel pipe 3a and a connecting core 3b,
It is fixed by welding. The smoother member 3 may have a structure in which an appropriate number of stainless steel pipes 3a and connecting cores 3b are connected in consideration of an on-site mounting operation and the like. When the opening width is small, one stainless steel pipe 3a is used. It may be configured. Note that the configuration of the lintel member 4 is not limited to the configuration and shape shown in the present embodiment, and it is needless to say that an appropriate member configuration can be adopted according to the opening width, the configuration of the ceiling material, and the like. No. A refractory sheet 2 wound around a winding shaft 1
Is fed from the lower surface side of the winding shaft 1 to the upper surface of the smoother member 3 (as a whole, in an inverted S-shape in side view),
From the left side of the smoother member 3, it is lowered to a predetermined position (shutter core). Reference numeral 13 denotes a seat plate 13 provided at the lower end of the refractory sheet 2. With this configuration, the thickness of the refractory sheet 2 wound around the winding shaft 1 (in other words, the opening / closing position of the shutter).
Irrespective of the above, since the smoother member 3 is made of a stainless steel pipe at all times, the friction with the fireproof sheet 2 at the time of winding and feeding is small, and the smoother member can be opened and closed smoothly. In the present embodiment, the winding shaft 1
Is installed beside the beam 20, only the smoother member 3 is provided below the beam 20, and the refractory sheet 2 is placed on the upper surface of the smoother member 3 from the lower surface side of the winding shaft 1 (total inverted S-shape in side view) With this configuration, the refractory sheet 2 can be lowered directly below the beam 20 even though the lower side of the beam 20 is an extremely narrow space. Next, a second embodiment will be described with reference to FIG. 3, in which the same members as those in the first embodiment are given the same numbers. In the second embodiment, the smoother member 3 is improved based on the seat shutter disclosed in Japanese Patent Application Laid-Open No. 2000-38885 previously filed by the applicant. The take-up shaft 1 is supported by support rollers 5a and 5b. The operation of the switch 14 drives the take-up shaft 1 forward and reverse, and fire-resistant sheets 2 made of a silica fiber sheet are erected on the left and right sides of the opening. The opening is opened and closed while the left and right ends are guided by the guide rail 11. The lintel member 4 includes a lintel receiving member 4a, a reinforcing angle member 4b, an inner lintel 4c, and a connecting angle 4d, and the smoother member 3 is fixed to the reinforcing angle 4a. Then, the refractory sheet 2 is placed on the upper surface of the smoother member 3 from the lower surface side of the winding shaft 1 (as a whole,
It is fed out (in an inverted S-shape in side view), and is lowered from the left side of the smoother member 3 to a predetermined position (shutter core).

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a main part of a first embodiment of a fireproof sheet shutter. FIG. 2 is a front view of a connection portion of a smoother member. FIG. 3 is a side view of a main part of a second embodiment of the fireproof sheet shutter. [Description of Signs] 1 Winding shaft 2 Fireproof sheet 3 Smoother member 3a Stainless steel pipe 3b Connecting core 4 Linegium member 20 Beam

Claims (1)

Claims: 1. A fireproof sheet shutter which is installed above an opening in a building and opens and closes the opening by feeding and unwinding a sheet wound around a winding shaft. A fireproof sheet shutter characterized in that a smoother member for lowering the fireproof sheet drawn out from the opening to a predetermined position of the opening is a stainless steel pipe extended and fixed above the lintel member.