JP2002147142A - Closing sheet structure of fireproof sheet shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the closing sheet structure of a fireproof sheet shutter in which an opening formed between a closing sheet and a main-body section sheet can be prevented surely even when an ambient temperature in the vicinity of an opening section reaches the state of a high temperature with the generation of a fire. SOLUTION: A fixing plate 12, in which a plurality of holes 11 are bored in a fixed surface region, and fixing pins 13 using a shape memory allot as main members are installed between severally opposed closing sheets 8a and 8b or among the closing sheets 8a and 8b and the opposed section of the main- body section sheet 3, and the fixing pins 13 inserted into the holes 11 of the fixing plate 12 are engaged into the holes 11 by the deformation of the shape of the shape memory alloy when the ambient temperature in the vicinity of the opening section 2 reaches a fixed or more of the high-temperature state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof sheet shutter, and more particularly, to a plurality of winding shafts each of which is wound around a main body sheet, connected in the width direction of the opening to synchronize these main body sheets. The present invention relates to a fireproof sheet shutter that closes an opening while closing a gap area formed between sheet side edges when the sheet is fed out.

[0002]

2. Description of the Related Art Conventionally, a fireproof sheet shutter provided at an opening of a building or an entrance to a compartment in a building closes the opening or the entrance when a fire occurs, thereby allowing the flow of high-temperature air and smoke due to a flame. It is installed for the purpose of preventing the spread of fire to other areas by blocking it, but if the opening width of the opening is wide, if the structure of a fire prevention sheet shutter that adopts a single long winding shaft, the winding shaft Since there is a concern that bending of the drive unit itself or twisting of the drive shaft may easily occur and smooth winding and rewinding operations may not be performed, generally, as shown in FIG. A plurality of take-up shafts b are provided in series in accordance with the opening width of the opening c, so that the winding and rewinding operations of the main body sheets a are synchronized.

In the fireproof sheet shutter installed in the above-described opening c having a large opening width, a void area A is inevitably formed between the side edges of the adjacent main body sheets a. The opening c is formed by closing the gap area A between the side edges of the main body sheets a and a with the closing sheet d linked to the winding and rewinding operations of the sheet a.
Are known to be closed.

However, in the closing sheet d employed in the above-described conventional configuration, the void area A is merely superimposed between the side edges of the main body sheets a, a. When the nearby ambient temperature reaches a high temperature state, high-temperature air or smoke is partitioned by the fireproof sheet shutter through a gap between the closing sheet d and the main body sheet a due to a pressure rise of the expanded air or a temperature difference, a pressure difference, or the like. In other areas, leaving room for improvement.

[0005] Therefore, if a detachable hook-and-loop fastener is vertically attached between the sheet surface located at the sheet side edge of the main body sheet and the sheet surface of the closing sheet that comes into contact with the sheet surface, the above-mentioned structure is obtained. Although it is possible to prevent such a gap between the closing sheet and the main body sheet, since the surface fastener is made of a synthetic resin, it has low resistance to high temperatures and high heats, and has a reduced sticking ability and dissolution during a fire. However, it was still difficult to sufficiently secure fire and smoke prevention functions.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in the course of research and development aiming at improving the function of a fire prevention sheet shutter in view of the above-mentioned situation, and the object of the present invention is to provide a fire prevention sheet shutter. Even if the surrounding temperature near the opening reaches a high temperature due to the generation, the gap created between the closing sheet and the main body sheet is reliably prevented, and the high-temperature air and smoke are circulated to other areas. An object of the present invention is to provide a blocking sheet structure for a fireproof sheet shutter that can be prevented from occurring.

[0007]

In order to achieve the above object, the present invention provides a technical means comprising: a plurality of winding shafts each wound with a main body sheet, continuously provided in a width direction of an opening; At the time of the synchronous feeding operation of each of the main body sheets, in the fire prevention sheet shutter configured to close the opening while closing the gap area between the adjacent sheet side edges with the sheet, the main body parts located at the sheet side edges A fixing plate formed by attaching a detachable surface fastener in the vertical direction between the sheet surface of the sheet and the sheet surface of the closing sheet in contact with the sheet surface, and forming a plurality of holes in a predetermined surface area. Are mounted at predetermined intervals in the vertical direction of one of the opposed sheet surfaces, and on the other sheet surface, fixing pins having a shape memory alloy as a main member are mounted at positions corresponding to the respective fixing plates. , Serial when closing the opening in a synchronous feeding operation of the main body sheet, it is fitted a fixed pin between the seat surface to surface wear one of the plurality of holes of the fixing plate,
And when the peripheral temperature near the opening reaches a predetermined high temperature state, the fixing pin is locked in the hole of the fixing plate by the shape deformation of the shape memory alloy. is there.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on a first embodiment shown in the drawings. 1 to 4, reference numeral 1 denotes a fire sheet shutter provided at an opening 2. The fire sheet shutter 1 includes a winding shaft 4, around which a main body sheet 3, 3 made of a fireproof cloth material is wound. The main body sheet 3 is synchronized with the main body seats 3 along the guide rails 5 erected on the left and right wall surfaces. The opening 2 is opened and closed by winding and rewinding by rotation driving.

A pair of closing sheets 8a, in which hook-and-loop fasteners 7a, 7b are fastened vertically and opposingly on both sides of the front and back sides of adjacent sheet side edges 3a, 3a of the main body sheets 3, 3, respectively. , 8b are arranged in a superposed state, and the closing sheets 8a, 8b wound around the auxiliary winding shafts 9a, 9b together with the main body sheets 3, 3 unwound from the winding shafts 4, 4 are seat plates. 9, when the closing sheets 8a, 8b are fed out via the feed rollers 10a, 10b, the closing sheets 8
a, 8b of the hook-and-loop fasteners 7a, 7b,
a, 3a. Reference numeral 10c denotes an auxiliary roller for promoting separation between the hooked fasteners 7a and 7b when the opening 2 is opened.

The closing sheet 8b and the closing sheet 8a
5 and 6, a fixing plate 12 having a plurality of holes 11, 11,... Formed in a predetermined surface area, and a fixing member having a shape memory alloy as a main member, as shown in FIGS. The pins 13 are mounted at predetermined intervals in the up and down direction of each of the sheets 8a and 8b.
a, 7b to close the sheet side edges 3a, 3a
The fixing pin 13 fits into one of the holes 11 of the fixing plate 12 when sandwiched between the fixing plates 12a and 8b (FIGS. 4A and 4B).

The feed rollers 10a and 10b are, as shown in FIG.
a, 9b are disposed at the upper and lower positions substantially at the center, and the roller feed trajectory has an S-shape, and the closing sheet 8a to which the fixing pins 13 (not shown in the drawing) are mounted is sub-winded. When unreeled from the shaft 9a, the feed rollers 10a, 1
0b do not face each other at the same height, so that the fixing pin 13 does not bite into the roller 10a, and unnecessary mechanical pressure does not act on the fixing plate 12 (not shown in the figure), so that the roller 10a is smooth. The attachment between the hook-and-loop fasteners 7a and 7b and the fitting operation of the fixing pin 13 to the fixing plate 12 can be maintained.

Here, the fixing plate 12 and the fixing pin 13 will be described in detail. As shown in FIGS. 5 to 7, the fixing plate 12 has holes 11, 11... A square fitting surface 12a, a peripheral wall 12b bent at four peripheral edges of the fitting surface 12a, and a mounting portion 12c formed by bending an excess length thereof are integrally formed,
A notch (not shown) such as a rivet is inserted into the through hole 14 provided in the mounting portion 12c, and is fixed to the closing sheet 8b.

The fixing pin 13 has a pin portion 13b made of a thin stainless steel plate on a base portion 13a made of a shape memory alloy.
13b is gripped in an opposing manner, and each end 13c, 13c has a configuration in which it stands up while maintaining the face-to-face state at the center position, and is fixed to the closing sheet 8a via the mounting hole 13d.

In a state in which the opening 2 is fully closed by the main body sheet 3, that is, in a state in which the fixing pins 13 are fitted into the fixing plate 12, the peripheral temperature in the vicinity of the opening 2 has reached a high temperature state equal to or higher than a predetermined value. In this case, as shown in FIG. 6 (c), the base portion 13a undergoes a shape deformation, and is visually indicated as “he”.
As a result, the tips 13c, 13c of the pin portions 13b, 13b expand in the hole 11 so that the fixing pin 13
Are locked with the fixing plate 12. The above-mentioned fixing plate 12 may be a rectangular fixing plate 12 'as shown in FIG. 7, and the holes 11, 11...
It may be 1 '.

Since the present invention is configured as described above,
When a fire or the like occurs, the winding shafts 4, 4 are driven to rewind, and the main body sheets 3, 3 are fed out synchronously. Then, the opening 2 is closed while closing the gap area A between the adjacent sheet side edges 3a, 3a with the sheets 8a, 8b.

At this time, the sheet side edges 3a, 3a of the main body sheets 3, 3 are closed, and the surface fasteners 7a of the sheets 8a, 8b are closed.
7b, while the fixing pins 13 are fitted in any of the holes 11 of the fixing plate 12, the winding shafts 4, 4 are driven to rewind until the main body sheets 3, 3 reach the fully closed state. Is continued.

Thereafter, when the peripheral temperature near the opening 2 reaches a predetermined or higher temperature in a state where the fixing pin 13 is fitted into the fixing plate 12, the base 13a shown in FIG. Is deformed in the shape of a letter "H" and the pin 1
The respective tips 13c, 13c of the members 3b, 13b expand in the hole 11, and the fixing pins 13 are locked with the fixing plate 12.

Therefore, even if the vicinity of the opening 2 is in a high temperature state above a predetermined level and the surface fasteners 7a and 7b are eluted and lose the adhering ability as described above, the locking state of the fixing pin 13 and the fixing plate 12 is maintained. Is maintained, the closing sheet 8 is raised due to a pressure rise of the expanded air or a temperature difference, a pressure difference, or the like.
a, 8b and the gaps between the main body sheets 3 and 3 can be minimized as much as possible, preventing the flow of high-temperature air, flames and smoke, and other areas partitioned by the fireproof sheet shutter 1. It is possible to prevent the spread of fire to the fire.

FIG. 8 shows the main body sheets 3, 3 of the embodiment.
A flame-shielding sheet 15, 15... With a plate 16 made of a shape memory alloy attached to the sheet side edges 3a, 3a of the second embodiment is shown in the vertical direction. That is, as shown in FIG. 9, the flame shielding sheets 15 are formed by weaving a band-shaped plate 16 made of a shape memory alloy in the center of a rectangular sheet surface 15a at a predetermined interval. When the ambient temperature in the vicinity of the opening 2 reaches a predetermined high temperature state, the plate 16 on which the reinforcing plate 17 is mounted is deformed in shape, and the flame-shielding sheet 15 is raised accordingly. Have been.

Therefore, the gap between the closing sheets 8a and 8b and the main body sheets 3 and 3 can be minimized as much as possible in the same manner as in the above-described embodiment, and the standing sheets are folded or folded as shown by dotted lines. By means of the flame-insulating sheets 15, 15, ..., the circulation of high-temperature air, flames and smoke can be more effectively prevented.

FIGS. 10 to 14 show the structure of the third embodiment in which the closing sheet 8 'is imposed on one side of each of the adjacent main body sheets 3, 3. FIG. The components of the hook-and-loop fasteners 7a, 7b, the fixing plate 12, and the fixing pin 13 shown in the first embodiment are attached to the sheet side edges 3a, 3a of the main body sheets 3, 3 and both side edges of the closing sheet 8 '. Equipped and adjacent seat side edges 3
The spacer plates 18, 18 having a required thickness are provided at the center on the side of the closing sheet 8 'located in the gap area A between the a, 3a.
Are arranged at predetermined intervals in the vertical direction, and flame-shielding sheets 15, 15... Through a shape memory alloy are arranged on the sheet side edges 3a, 3a of the main body sheets 3, 3 at predetermined intervals in the vertical direction. A closing sheet structure is formed by combining the configuration of the second embodiment that is extended.

In the third embodiment, as shown in FIG. 13, a single sub-winding shaft 9 'is disposed for the winding shafts 4, 4, and a feed roller is provided similarly to the first embodiment. While the roller feed locus between 10'a and 10'b can also adopt a relatively simple configuration having an S-shape, the flame shielding sheets 15, 15... Are further indicated by dotted lines from the standing state. Since the shape memory alloy 16 is formed so as to change into a folded state, the flow of high-temperature air, flame, and smoke can be more effectively prevented.

As shown in FIG. 14, even when the closing sheet 8 'is wound on the sub-winding shaft 9', the interposition of the spacer plates 18, 18,... It is possible to maintain a proper winding state.

[0024]

In summary, the present invention is characterized in that a plurality of winding shafts each of which is wound around a main body sheet are connected in the opening width direction of the opening, and when the main body sheets are synchronously fed out, adjacent winding shafts are provided. In a fireproof sheet shutter configured to close an opening while closing a gap area between sheet side edges to be closed with a sheet, a sheet surface of each main body sheet located at the sheet side edge and a closing sheet in contact with these A detachable hook-and-loop fastener is stuck in the vertical direction between the opposite sheet surfaces, and a fixing plate formed by drilling a plurality of holes in a predetermined surface area is fixed in the vertical direction on one of the opposed sheet surfaces. Attach with an interval, and on the other sheet surface, fixation pins having a shape memory alloy as a main member are attached at positions corresponding to the respective fixation plates. When the mouth is closed, the fixing pin is inserted into any of the plurality of holes of the fixing plate between the sheet surfaces to be imposed, and when the peripheral temperature near the opening reaches a high temperature state equal to or higher than a predetermined value. Since the fixing pin is locked in the hole of the fixing plate by the shape deformation of the shape memory alloy, the temperature around the opening reaches a high temperature due to the occurrence of fire, and the elution and disappearance of hook-and-loop fastener This is a very useful new technology that can reliably prevent the gap between the closing sheet and the main body sheet from being generated, thereby preventing high-temperature air and smoke from flowing to other areas. It is effective.

[Brief description of the drawings]

FIG. 1A is an overall front view of a fire sheet shutter. (B) is a rear view of the same. FIG. 3C is a cross-sectional view of a main part of the above.

FIG. 2 is a left side sectional view of a fire prevention sheet shutter.

FIG. 3 is an enlarged side view of a main part showing a positional relationship among a winding shaft, a sub winding shaft, a main body sheet, and a closing sheet.

FIG. 4A is a cross-sectional view of a main part showing a state before attaching a hook-and-loop fastener. (B) is principal part sectional drawing which shows the adhesion state of a surface fastener. (C) is a principal part sectional view showing a change of a fixing pin when a peripheral temperature near an opening reaches a predetermined value or more. (D) It is principal part sectional drawing which shows the state at the time of a surface fastener eluting or disappearing.

FIG. 5A is a plan view of a fixing plate. (B)
FIG.

FIG. 6A is a plan view of a fixing pin. (B) is a front view of the same. (C) is a front view showing the state of the fixing pin when the shape has changed.

FIG. 7A is a front view showing another configuration of the fixing plate. (B) is a front view showing another configuration of the fixing plate.

FIG. 8A is a cross-sectional view of a main part showing a state before attaching a hook-and-loop fastener. (B) is principal part sectional drawing which shows the adhesion state of a surface fastener. (C) is a principal part sectional view showing a change of a fixing pin when a peripheral temperature near an opening reaches a predetermined value or more. (D) It is principal part sectional drawing which shows the state at the time of a surface fastener eluting or disappearing.

FIG. 9A is a front view of a flame-shielding sheet. (B) is a right side view of the same. (C) is a right side view showing the state of the flame shielding sheet when the shape has changed.

FIG. 10 is a left side sectional view of the fireproof sheet shutter.

FIG. 11A is a sectional view of a main part showing a state before attaching a hook-and-loop fastener. (B) is principal part sectional drawing which shows the adhesion state of a surface fastener. (C) is a principal part sectional view showing a change of a fixing pin when a peripheral temperature near an opening reaches a predetermined value or more. (D) It is principal part sectional drawing which shows the state at the time of a surface fastener eluting or disappearing.

FIG. 12A is an enlarged sectional view of a main part showing a state before attaching a hook-and-loop fastener. (B) is a principal part expanded sectional view which shows the adhesion state of a hook-and-loop fastener. (C) is a principal part enlarged sectional view showing a change of a fixing pin when a peripheral temperature near an opening reaches a predetermined value or more. (D) It is a principal part expanded sectional view which shows the state at the time of a surface fastener eluting or disappearing.

FIG. 13 is an enlarged side view of a main part showing a positional relationship among a winding shaft, a sub winding shaft, a main body sheet, and a closing sheet.

FIG. 14 is a cross-sectional view of a main part showing a state in which a closing sheet is wound around a winding shaft.

FIG. 15A is an overall front view of a conventional fireproof sheet shutter. (B) is a side view of the same. FIG. 3C is a cross-sectional view of a main part of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fire prevention sheet shutter 2 Opening 3 Body part sheet 3a Sheet side edge 4 Winding shaft 7a Surface fastener 7b Surface fastener 8a Closing sheet 8b Closing sheet 9a Sub winding shaft 9b Sub winding shaft 10a Feed roller 10b Feed roller 11 Hole 12 Fixing plate 13 Fixing pin 15 Flame shield sheet 16 Shape memory alloy A Void area

Claims (7)

[Claims] A plurality of winding shafts each having a main body sheet wound thereon are connected in the opening width direction of the opening, and a gap between adjacent sheet side edges when the main body sheets are synchronously fed out. In the fire prevention sheet shutter configured to close the opening while closing the area with the sheet, the sheet surface of each main body sheet located at the side edge of the sheet and the opposing sheet surface of the closing sheet in contact with these. Attaching a detachable hook-and-loop fastener in the up-down direction, and attaching a fixed plate formed by drilling a plurality of holes in a predetermined surface area at a predetermined interval in the up-down direction of one of the opposed sheet surfaces. On the other sheet surface, a fixing pin having a shape memory alloy as a main member is attached to a position corresponding to each of the fixing plates, and when closing the opening by the synchronous feeding operation of each of the main body sheets, Dress When the fixing pin is inserted into any of the plurality of holes of the fixing plate between the sheet surfaces to be performed, and when the peripheral temperature near the opening reaches a high temperature state equal to or higher than a predetermined value,
A closing sheet structure for a fire prevention sheet shutter, wherein a fixing pin is locked in a hole of a fixing plate by shape deformation of a shape memory alloy. 2. The closing sheet structure for a fireproof sheet shutter according to claim 1, wherein a pair of closing sheets are opposed to each other on both the front and back surfaces of each of the adjacent main body sheets. 3. The closing sheet structure for a fireproof sheet shutter according to claim 1, wherein a closing sheet is imposed on one of the front and back surfaces of each of the adjacent main body sheets. 4. A pair of closing sheets facing each other on the front and back sides of each of the adjacent main body sheets, wherein the fixing plate and the fixing pins are respectively mounted at the center in the width direction. 3. The closing sheet structure for a fireproof sheet shutter according to claim 2, wherein: 5. A flame-shielding sheet provided with a shape memory alloy plate is provided at a side edge in the width direction of the adjacent main body sheet, and a peripheral temperature near an opening is higher than a predetermined temperature. The blocking sheet structure for a fireproof sheet shutter according to any one of claims 1 to 4, wherein the flameproof sheet is configured to stand up by the shape deformation when the state is reached. 6. A flame-shielding sheet provided with a plate made of a shape memory alloy is provided at a side edge in the width direction of the adjacent main body sheet, and a peripheral temperature near an opening is higher than a predetermined temperature. The closing sheet structure for a fireproof sheet shutter according to any one of claims 1 to 4, wherein, when the state is reached, the flame shielding sheet is folded back to the closing sheet side by shape deformation. 7. The closing sheet is wound around a sub-winding shaft which is synchronized with the unwinding operation of the winding shaft around which the main body sheet is wound, and above the unwinding position of the main body sheet to the opening. A pair of feed rollers that regulate the feed direction of the main body sheet and the closing sheet to be fed out,
The roller feed trajectory is arranged side by side at upper and lower separated positions forming an S shape in side view, and the attaching operation of the surface fastener and the fitting operation of the fixing pin to the fixing plate are performed from the upper feed roller to the lower feed roller. The closing sheet structure for a fireproof sheet shutter according to claim 1, wherein the closing is performed during a period from the start to the end.