JP3268366B2 - Shutter curtain for fire shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter curtain for a fireproof shutter that blocks a passage to prevent a fire from spreading when a fire occurs in a building.

[0002]

2. Description of the Related Art As shown in FIG. 4, a shutter curtain of a fireproof shutter comprises a metal box-shaped slat 32 filled with a heat insulating material 31 and connected vertically through an interlock 33. As shown in FIG. Therefore, if the fire prevention shutter is closed at the time of a fire, the passage is cut off via the fire prevention shutter, and fire spread is prevented.

[0003]

However, since the conventional fire shutter uses the box-shaped slats 32, the shutter curtain becomes thick, and when the shutter curtain is wound on a winding drum (not shown). However, there has been a problem that the winding diameter becomes large and a large storage space is required. In addition, although each slat 32 is filled with a heat insulating material, the periphery thereof is formed of a metal plate, so that heat on one side is easily transmitted to the metal plate of each slat 32 and reaches the opposite side, so that a high heat insulating effect is obtained. There was a problem that it could not be obtained.

[0004] When the shutter curtain is heated from one side, heat is not uniformly transmitted to the metal plate of the slats 32, and the slats 32 are likely to be warped or twisted. In this case, there was a problem that the interlock portion was broken and came off. Therefore, the present invention prevents the winding diameter from increasing even when the shutter curtain is wound, prevents the heat on one side from being transmitted to the other side when the shutter curtain is closed, and reduces the slat even when the shutter curtain is heated. It is a technical issue to prevent deviation.

[0005]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention provides an unfoamed heat-insulating plate formed of a non-combustible foam material that is heated and foamed in the event of a fire. mounted between the interlocking portion comprises incombustible sheet is bonded through a pre Symbol insulation plates on the entire surface of the slat curtain, the
The thickness is thinner than the width of the guide rail that guides the left and right ends
And when the heat insulating plate foams,
The slat curtain and non-combustible sheet are inside the guide rail.
It is characterized in that it is formed so as to swell to a thickness that makes close contact .

[0006]

According to the present invention, the shutter curtain has a three-layer structure in which the slat curtain and the non-combustible sheet are bonded via an unfoamed heat insulating plate, and the heat insulating plate is thin when not foamed. The entire curtain can be formed thin, so that even when the shutter curtain is wound up, the winding diameter can be reduced.
Also, when the shutter curtain closed in an emergency such as a fire is heated to a certain temperature or higher, the heat insulating plate foams, separating the non-combustible sheet and the slat curtain, and the foamed heat insulating plate is interposed between the two. As a result, a heat insulating layer is formed, and a high heat insulating effect is obtained. Furthermore, the shutter curtain has a three-layer structure in which an unfoamed noncombustible foam material is interposed between the noncombustible sheet and the slat material, so that even when the slat material is heated, the heat is evenly distributed to the slat material. However, the slat material does not warp or twist and the interlock portion does not break or come off.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on embodiments shown in the drawings. 1A and 1B are side views showing a shutter curtain in an unfoamed state and a foamed state of a fireproof shutter according to the present invention, respectively. FIGS. 2A and 2B are cross-sectional views thereof, and FIG. (a) and (b) are side views showing the movement of the interlock.

In the drawing, reference numeral 1 denotes a shutter curtain of a fireproof shutter according to the present invention, which is an unfoamed heat insulating plate 2 made of a non-combustible foam material which is heated and foamed in a fire.
Is attached between the upper and lower interlock portions 4a and 4b of the slat main body 4 constituting the slat curtain 3, and a non-combustible sheet 5 is adhered to the entire surface of the slat curtain 3 via the heat insulating plate 2. Is guided by the guide rail 6 and is opened and closed.

The slat body 4 constituting the slat curtain 3 is formed of a thin and rigid noncombustible material such as a metal plate, and its thickness is selected to be, for example, about 0.5 to 1 mm. The non-combustible sheet 5 is, for example, a metal sheet,
It is formed of a sheet woven of non-combustible fibers or any other non-combustible material and has a thickness of, for example, 0.5 mm or less. Further, the heat insulating plate 2 provided between the slat body 4 and the non-combustible sheet 5 is, for example, about 5 mm when not foamed.
It has a thickness of about mm and swells to 3-5 cm when foamed. Therefore, the thickness of the shutter curtain 1 is normally very thin, generally about 6 mm. Further, as shown in FIGS. 3A and 3B, the width of the guide rail 6 is selected to be wider than the thickness of the shutter curtain 1 when the plate 2 is not foamed, and when the foam material is foamed. The width is selected to be equal to or smaller than the thickness of the shutter curtain 1.

The interlock portions 4a and 4b formed on the upper and lower sides of each slat main body 4 are respectively formed in an arc shape and are rotatably slidably contacted with each other, as shown in FIGS. 3 (a) and 3 (b). Even if the slat curtain 3 is inside or outside the non-combustible sheet 5, the shutter curtain 1 can be wound up by rotating the slat main body 4 in an arbitrary direction.

For example, when the slat curtain 3 is wound inside the non-combustible sheet 5, as shown in FIG. When the slat curtain 3 is wrapped around the non-combustible sheet 5 when the slat curtain 3 is slid in the direction in which the overlapping portion 4b increases, as shown in FIG.
The non-combustible sheet 2 is slid between the slat bodies 4 in a direction in which the overlapping portions of the interlock portions 4a and 4b are reduced so as not to wrinkle. At this time, the heat insulating plate 2 is connected to the upper and lower interlock portions 4a and 4b of the slat body 4.
Since the gaps are formed in the interlocks 4a and 4b, the heat insulating plate 2 does not hinder the winding of the shutter curtain 1.

The above is an example of the configuration of the present invention, and its operation will now be described. First, since the heat insulating plate 2 is thin in an unfoamed state, the entire shutter curtain 1 can be formed to be thin. Even if this is wound on a winding drum, the winding diameter is small and a large storage space is required. do not do. Further, since the interlock portions 4a and 4b are formed so as to be rotatable forward and backward, the interlock portions 4a and 4b can be attached in any direction regardless of the winding direction. In this case, the slat curtain 3 and the non-combustible sheet 5
However, the interlocks 3a and 3b slide to allow a difference in the winding length caused by the difference in the winding diameter.

In the event of an emergency such as a fire, the shutter curtain 1 is automatically unwound by a signal from a fire alarm or the like to shut off a passage or the like. At this point, the shutter curtain 1 has not yet been heated so much.
As shown in FIG. 2A and FIG. 2A, the heat insulating plate 2 is guided by the guide rail 6 in an unfoamed state, and the shutter curtain 1 is closed.

After that, when the shutter curtain 1 is heated and reaches a predetermined temperature, the non-combustible foam material is foamed by the heat as shown in FIGS. 1 (b) and 2 (b), and the slat curtain 3 and the non-combustible Since a thick heat-insulating layer is formed between the sheet and the sheet 5, a high heat-insulating effect is obtained, and fire spread is prevented. At this time, the heat insulating plate 4 foams,
The shutter curtain 1 is closely adhered to the inside of the guide rail 6, so that the passage is reliably blocked, and harmful smoke can be prevented from passing.

The slat curtain 3 and the non-combustible sheet 5
Is separated from the slat curtain 3 by the heat insulating plate 2, so that even if it is heated from either side, it is difficult for heat to be transmitted to the other side, and when heated from the slat curtain 3 side, the heat is uniform over the entire surface of the slat curtain 3. Non-combustible sheet 5 distributed in
Heat is hardly transmitted to the slat curtain 3 when heated from the non-combustible sheet 5 side. Therefore, in any case, the slat body 4 is warped or twisted and the interlock portion is formed. Does not break or come off.

[0016]

As described above, according to the present invention, the heat insulating plate has a three-layer structure in which the heat insulating plate is interposed between the slat curtain and the non-combustible sheet. The entire shutter curtain can be formed thin, so that even when the shutter curtain is wound up, the winding diameter can be reduced, and the storage space can be saved. In addition, when it is closed in an emergency such as a fire and heated to a certain temperature or higher, the heat insulating plate foams, so that the slat curtain and the non-combustible sheet are completely separated through the heat insulating plate, and between them. Because a thick heat insulation layer is formed,
A very high heat insulating effect is obtained. Furthermore, even if the slat curtain is heated, the heat is uniformly distributed, so that there is an excellent effect that the slat body does not warp or twist due to thermal stress to break or detach the interlock.

[Brief description of the drawings]

FIGS. 1A and 1B are side views showing a shutter curtain in a non-foamed state and a foamed state of a fireproof shutter according to the present invention, respectively.

FIGS. 2 (a) and (b) are FIGS. 1 (a) and (b), respectively.
FIG.

FIGS. 3A and 3B are side views showing the movement of an interlock unit.

FIG. 4 is a side view showing a shutter curtain of a conventional fireproof shutter.

[Explanation of symbols]

 1 Shutter curtain 2 Insulating plate 3 Slat curtain 4 Slat body 4a, 4b Interlock section 5 ..... Non-combustible sheet 6 ..... Guide rail

Claims (1)

(57) [Claims] An unfoamed heat-insulating plate (2) formed of a non-combustible foam material that is heated and foamed in the event of a fire to form a slat curtain (3). mounted between 4b) made glued incombustible sheet (5) via the front SL thermal insulation plates (2) on the entire surface of the <br/> slat curtain (3), its
Is the width of the guide rail (6) that guides the left and right ends.
The heat insulating plate (2) is formed
When foamed, said slat curtain (3) and non-combustible sheet
(5) expands to a thickness that allows it to fit in the guide rail (6).
A shutter curtain for a fireproof shutter, characterized in that it is formed so as to wrap around .