JP3743976B2 - Fire protection sheet shutter closing sheet structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fireproof sheet shutter, and in particular, when a plurality of winding shafts each wound with a main body sheet are connected in the opening width direction of the opening, and when these main body sheets are fed out in synchronization, The present invention relates to a fireproof sheet shutter in which an opening is closed while a gap formed between sheet side edges is closed and covered with a sheet.
[0002]
[Prior art]
Conventionally, fire-proof sheet shutters installed at the opening of buildings or at the entrances to compartments within buildings have closed the openings and entrances in the event of a fire, preventing the flow of hot air and smoke due to flames to other areas. It is installed for the purpose of preventing the spread of fire to the fire, but when the opening width of the opening is wide, if the fireproof sheet shutter structure adopts a single long winding shaft, the winding shaft itself will bend and drive Since the shaft is liable to be twisted and there is a possibility that smooth winding and rewinding operations cannot be performed, generally, as shown in FIG. 15, a winding shaft b of a predetermined length around which the main body sheet a is wound, A plurality of continuous arrangements are made in accordance with the opening width of the opening c, and the winding and unwinding operations of the main body sheet a are synchronized.
[0003]
And in the fire prevention sheet shutter installed in the opening part c with the wide opening width described above, the gap area A is inevitably formed between the side edges of the adjacent body part sheets a, a. It is known that the opening c is closed while the gap area A is closed in a polymerized manner across the side edges of the main body sheets a and a by the closing sheet d linked to the winding and rewinding operations. It has been.
[0004]
However, in the closing sheet d employed in the above-described conventional configuration, the void area A is simply polymerized between the side edges of the main body sheet a, a. When the temperature reaches a high temperature state, the high temperature air or smoke is separated by the fire sheet shutter through the gap between the closing sheet d and the main body sheet a due to a rise in pressure of the expansion air, a temperature difference, a pressure difference, or the like. It left room for improvement that it would circulate in the area.
[0005]
Therefore, if a detachable surface fastener is attached in the vertical direction between the sheet surface located on the sheet side edge of the main body sheet and the sheet surface of the closing sheet that contacts these, the blocking as described above is performed. Although the gap between the sheet and the main body sheet can be prevented, the hook and loop fastener is made of synthetic resin, so it has low resistance to high temperatures and high heat, and induces a decrease in sticking ability and elution during a fire. However, the fireproofing and smokeproofing functions were still insufficient.
[0006]
[Problems to be solved by the invention]
The present invention was devised in the course of research and development aimed at improving the function of a fireproof sheet shutter in view of the actual situation as described above, and its purpose is to surround the vicinity of the opening with the occurrence of a fire Even when the temperature reaches a high temperature state, a fire-proof sheet shutter that can reliably prevent the gap between the sealing sheet and the main body sheet and prevent the circulation of high-temperature air and smoke to other areas. It is intended to provide a closing sheet structure.
[0007]
[Means for Solving the Problems]
In order to achieve the object, the technical means adopted by the present invention is that a plurality of winding shafts each wound with a main body sheet are connected in the opening width direction of the opening, and the main body sheets are synchronously fed out. Sometimes, in a fireproof sheet shutter configured to close an opening while closing a gap between adjacent sheet side edges with a sheet, the sheet surface of each main body sheet positioned on the sheet side edge, and the surface A detachable surface fastener is vertically attached between the facing sheet surfaces of the closing sheet, and a fixed plate formed with a plurality of holes in a predetermined surface area is opposed to the upper and lower surfaces of one sheet surface facing each other. A fixed pin having a shape memory alloy as a main member is mounted on the other sheet surface at a position corresponding to each of the fixed plates, and the main body sheet is synchronously rotated. When the opening is closed by the operation, the fixing pin is inserted into one of the plurality of holes of the fixing plate between the seating sheets, and the ambient temperature in the vicinity of the opening reaches a predetermined high temperature state. In this case, the fixing pin is locked in the hole of the fixing plate by deformation of the shape memory alloy.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described based on the first embodiment shown in the drawings.
In FIG. 1 to FIG. 4, reference numeral 1 denotes a fireproof sheet shutter installed in the opening 2, and the fireproof sheet shutter 1 includes a winding shaft 4, 4 wound around a main body sheet 3, 3 made of a fireproof cloth material. The electric switch 6 is forward / reverse in a state in which the main body seats 3 and 3 are synchronized along the guide rails 5 and 5 that are arranged in series on the upper side in the opening width direction and are erected on the left and right wall surfaces. The opening 2 is opened and closed by winding and rewinding by rotational driving.
[0009]
On the adjacent sheet side edges 3a, 3a of the main body sheet 3, 3, there are a pair of closing sheets 8a, 8b, which are fixed to the front and back sides of the surface fasteners 7a, 7b in the vertical direction and facing each other. The covering sheets 8a and 8b wound around the auxiliary winding shafts 9a and 9b together with the main body sheets 3 and 3 fed out from the winding shafts 4 and 4 are fixed to the seat plate 9 respectively. By attaching, when the closing sheets 8a and 8b are fed out via the feed rollers 10a and 10b, the sheet side edges 3a and 3a are sandwiched between the surface fasteners 7a and 7b of the closing sheets 8a and 8b. ing. Reference numeral 10c denotes an auxiliary roller that promotes peeling between the surface fasteners 7a and 7b that are attached when the opening 2 is opened.
[0010]
Further, as shown in FIG. 5 and FIG. 6, a fixing plate 12 having a plurality of holes 11, 11,... Fixing pins 13 having a shape memory alloy as a main member are mounted at predetermined intervals in the vertical direction of the sheets 8a and 8b. As described above, the sheet side edges 3a, When 3a is closed and sandwiched between the sheets 8a and 8b, the fixing pin 13 is inserted into any one of the holes 11 of the fixing plate 12 (FIGS. 4A and 4B).
[0011]
As shown in FIG. 3, the feed rollers 10a and 10b are disposed vertically at the approximate center of the sub-winding shafts 9a and 9b that are spaced apart from each other in a side view, and the roller feed locus has an S-shape. Therefore, when the closing sheet 8a with the fixing pin 13 (not shown in the drawing) is fed out from the auxiliary winding shaft 9a, the feed rollers 10a and 10b do not face each other at the same height. The fixing pin 13 does not dig into the surface, and unnecessary mechanical pressure does not act between the fixing plate 12 (not shown in the figure), and the smooth bonding between the surface fasteners 7a and 7b and the fixing plate 12 can be performed. It is possible to hold the fitting operation of the fixing pin 13 with respect to.
[0012]
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 a regular rectangular shape with holes 11, 11,. The fitting surface 12a, the peripheral wall 12b bent at the four peripheral edges of the fitting surface 12a, and the mounting portion 12c formed by bending the extra length portion are integrally formed, and provided in the mounting portion 12c. A locking tool such as a rivet (not shown) is inserted into the through hole 14 and fixed to the closing sheet 8b.
[0013]
The fixing pin 13 holds the pin portions 13b and 13b made of a thin stainless steel plate on the base portion 13a made of a shape memory alloy so as to face each other, and the tips 13c and 13c stand up while maintaining the contact state at the center position. It has a configuration and is fixed to the closing sheet 8a through the mounting hole 13d.
[0014]
When the ambient temperature in the vicinity of the opening 2 reaches a predetermined high temperature in the fully closed state of the opening 2 by the main body sheet 3, that is, in a state where the fixing pin 13 is fitted in the fixing plate 12 As shown in FIG. 6C, the base portion 13a is deformed and deformed into a “h” shape in the figure, whereby the tips 13c and 13c of the pin portions 13b and 13b are inserted into the holes 11. And the fixing pin 13 is configured to be locked with the fixing plate 12. The fixing plate 12 described above may be a rectangular fixing plate 12 ′ as shown in FIG. 7, and the holes 11, 11... Are not limited to a circular shape but may be a diamond-shaped hole 11 ′.
[0015]
Since the present invention is configured as described above, when a fire or the like occurs, the winding shafts 4 and 4 are rewound and the main body sheets 3 and 3 are fed out synchronously. And the opening part 2 is closed, closing the space | gap area A between adjacent sheet | seat side edges 3a and 3a, and closing with the sheet | seats 8a and 8b.
[0016]
At this time, the sheet side edges 3a and 3a of the main body sheets 3 and 3 are closed and sandwiched between the surface fasteners 7a and 7b of the sheets 8a and 8b, and the fixing pin 13 is inserted into any hole 11 of the fixing plate 12. The rewinding drive of the winding shafts 4 and 4 is continued until the main body sheets 3 and 3 reach the fully closed state with the insertion.
[0017]
Thereafter, when the fixing pin 13 is fitted into the fixing plate 12 and the ambient temperature in the vicinity of the opening 2 reaches a predetermined high temperature state, the base portion 13a shown in FIG. The shape of the pin portions 13b and 13b is deformed in a letter-like shape so that the tips 13c and 13c of the pin portions 13b and 13b expand in the hole 11, and the fixing pin 13 is locked with the fixing plate 12.
[0018]
Therefore, even if the vicinity of the opening 2 becomes a predetermined high temperature or higher as described above and the hook-and-loop fasteners 7a and 7b are eluted and the sticking ability is lost, the locked state of the fixing pin 13 and the fixing plate 12 is maintained. 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 due to the pressure increase of the expansion air, temperature difference, pressure difference, etc. Further, it is possible to prevent the spread of smoke to other areas divided by the fireproof sheet shutter 1 by blocking the flow of smoke.
[0019]
FIG. 8 shows a second example in which flame shielding sheets 15, 15... With a shape memory alloy plate 16 mounted on the sheet side edges 3 a, 3 a of the main body sheets 3, 3 of the embodiment are vertically stretched. The structure of an Example is shown.
That is, as shown in FIG. 9, the flame shield sheets 15 and 15 are formed by weaving a plate 16 made of a shape memory alloy having a band shape in the center of a rectangular sheet surface 15a with a predetermined interval. When the ambient temperature in the vicinity of the opening 2 reaches a predetermined high temperature or higher, the plate 16 on the side where the reinforcing plate 17 is mounted is deformed, and the flame shield sheet 15 stands up accordingly. Has been.
[0020]
Accordingly, 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 embodiment, and the flameproof sheet folded up as shown by a standing or dotted line. 15, 15... Can more effectively prevent the circulation of high-temperature air, flame, and smoke.
[0021]
FIGS. 10 to 14 show the configuration of the third embodiment in which the closing sheet 8 ′ is attached on one surface side of each of the adjacent main body sheet 3, 3. The surface fasteners 7a and 7b, the fixing plate 12 and the fixing pin 13 shown in the embodiment are mounted on the sheet side edges 3a and 3a of the main body sheets 3 and 3 and both side edges of the closing sheet 8 ', In addition, spacer plates 18, 18... Having a required thickness are arranged at predetermined intervals in the vertical direction in the center of the closing sheet 8 'located in the gap area A between the adjacent sheet side edges 3a, 3a. A combination of the structure of the second embodiment in which flame-shielding sheets 15, 15. A closed sheet structure is formed.
[0022]
In the third embodiment, as shown in FIG. 13, a single sub-winding shaft 9 'is arranged for the winding shafts 4 and 4, and the feed roller 10'a as in the first embodiment. While the roller feed trajectory between 10'b can also take a comparatively simple configuration having an S shape, the flame shield sheets 15, 15 ... are further turned from the standing state to the folded state indicated by the dotted line. Since the shape memory alloy 16 is formed so as to change its shape, the circulation of high-temperature air, flame, and smoke can be more effectively prevented.
[0023]
As shown in FIG. 14, even when the closing sheet 8 ′ is wound around the auxiliary winding shaft 9 ′, uniform winding without causing uneven winding or misalignment due to the interposition of the spacer plates 18, 18. The state can be maintained.
[0024]
【The invention's effect】
In short, in the present invention, a plurality of winding shafts each wound around the main body sheet are connected in the opening width direction of the opening, and when the main body sheets are synchronously fed, the adjacent sheet side edges are arranged. In the fire-proof sheet shutter configured to close the gap area of the sheet and close the opening with the sheet, the sheet surface of each main body sheet positioned on the side edge of the sheet and the sheet surface of the blocking sheet that is in contact with the sheet surface In the meantime, a detachable surface fastener is attached in the vertical direction, and a fixed plate formed with a plurality of holes in a predetermined surface area has a predetermined interval in the vertical direction of one sheet surface facing each other. A fixing pin mainly composed of a shape memory alloy is mounted on the other sheet surface at a position corresponding to each of the fixing plates, and the opening is closed by the synchronous feeding operation of the main body sheet. When the fixing pin is inserted into any of the plurality of holes of the fixing plate between the seating sheets, and the ambient temperature near the opening reaches a high temperature state higher than a predetermined value, the shape memory alloy Since the fixing pin is locked in the hole of the fixing plate by deforming the shape, even if the ambient temperature near the opening reaches a high temperature due to the occurrence of a fire, elution or disappearance of the surface fastener occurs. In addition, the gap between the sealing sheet and the main body sheet can be surely prevented, and high temperature air and smoke can be prevented from flowing to other areas. is there.
[Brief description of the drawings]
FIG. 1A is an overall front view of a fireproof sheet shutter.
(B) is a rear view of the same.
(C) is a cross-sectional view of the main part.
FIG. 2 is a left sectional view of a fireproof 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 surface fasteners are attached.
(B) is principal part sectional drawing which shows the sticking state of a hook-and-loop fastener.
(C) is principal part sectional drawing which shows the change of a fixing pin when the ambient temperature of the vicinity of an opening reaches more than predetermined.
(D) It is principal part sectional drawing which shows a state when a hook-and-loop fastener elutes or disappears.
FIG. 5A is a plan view of a fixed plate.
(B) is a front view of the same.
FIG. 6A is a plan view of a fixing pin.
(B) is a front view of the same.
(C) is a front view which shows the state of the fixed pin at the time of shape change.
FIG. 7A is a front view showing another configuration of the fixed plate.
(B) is a front view which shows the other structure of a fixed plate.
FIG. 8A is a cross-sectional view of a main part showing a state before surface fasteners are attached.
(B) is principal part sectional drawing which shows the sticking state of a hook-and-loop fastener.
(C) is principal part sectional drawing which shows the change of a fixing pin when the ambient temperature of the vicinity of an opening reaches more than predetermined.
(D) It is principal part sectional drawing which shows a state when a hook-and-loop fastener elutes or disappears.
FIG. 9A is a front view of a flame shield sheet.
(B) is a right side view of the above.
(C) is a right side view showing the state of the flameproof sheet when the shape is changed.
FIG. 10 is a left sectional view of the fireproof sheet shutter.
FIG. 11 (a) is a cross-sectional view of the main part showing a state before the surface fastener is attached.
(B) is principal part sectional drawing which shows the sticking state of a hook-and-loop fastener.
(C) is principal part sectional drawing which shows the change of a fixing pin when the ambient temperature of the vicinity of an opening reaches more than predetermined.
(D) It is principal part sectional drawing which shows a state when a hook-and-loop fastener elutes or disappears.
FIG. 12A is an enlarged cross-sectional view of a main part showing a state before the surface fastener is attached.
(B) is a principal part expanded sectional view which shows the sticking state of a hook-and-loop fastener.
(C) is a principal part expanded sectional view which shows the change of a fixing pin when the ambient temperature of the vicinity of an opening reaches more than predetermined.
(D) It is a principal part expanded sectional view which shows a state when a hook-and-loop fastener elutes or disappears.
FIG. 13 is an enlarged side view of a main part showing a positional relationship among a winding shaft, a secondary winding shaft, a main body sheet, and a closing sheet.
FIG. 14 is a cross-sectional view of an essential part showing a winding state of a closing sheet 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 as above.
(C) is a cross-sectional view of the main part.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fire prevention sheet shutter 2 Opening part 3 Body part sheet | seat 3a Sheet side edge 4 Winding shaft 7a Surface fastener 7b Surface fastener 8a Closing sheet 8b Closing sheet 9a Subwinding shaft 9b Subwinding shaft 10a Feeding roller 10b Feeding roller 11 Hole 12 Fixed plate 13 Fixed pin 15 Flame shield sheet 16 Shape memory alloy A

Claims (7)

A plurality of winding shafts each wound around the main body sheet are continuously provided in the opening width direction of the opening, and when the main body sheet is synchronously fed out, the gap area between adjacent sheet side edges is closed with a sheet. In the fire-proof sheet shutter configured to close the opening while closing, the seat surface of each main body sheet positioned on the side edge of the sheet and the facing of the sheet surface of the closing sheet that is in contact with these are freely separable Attaching the surface fastener in the vertical direction, and mounting a fixed plate formed by drilling a plurality of holes in a predetermined surface area with a predetermined interval in the vertical direction of one facing sheet surface, the other sheet surface The seat surface that is attached when a fixing pin having a shape memory alloy as a main member is mounted at a position corresponding to each of the fixing plates, and the opening is closed by the synchronous feeding operation of the main body seats. When the fixing pin is inserted into any of the plurality of holes of the fixing plate and the ambient temperature near the opening reaches a high temperature state higher than a predetermined value, the fixing pin is fixed to the fixing plate by the shape deformation of the shape memory alloy. A fire protection sheet shutter closing sheet structure characterized by being configured to be locked in a hole. 2. The closing sheet structure for a fireproof sheet shutter according to claim 1, wherein a pair of closing sheets are faced to face each other on both front and back surfaces of each of the adjacent main body sheet. 2. The closing sheet structure for a fireproof sheet shutter according to claim 1, wherein the closing sheet is attached on either one of the front and back surfaces of the adjacent main body sheet. The pair of closing sheets that are faced on both the front and back surfaces of each of the adjacent main body sheet is provided with the fixing plate and the fixing pin, respectively, located at the center in the width direction. 2. A closing sheet structure of the fireproof sheet shutter according to 2. A flameproof sheet fitted with a shape memory alloy plate is attached to the side edge in the width direction of the adjacent main body sheet, and the ambient temperature near the opening reaches a predetermined high temperature state. 5. The fireproof sheet shutter closing sheet structure according to claim 1, wherein the flameproof sheet is erected by shape deformation. A flameproof sheet fitted with a shape memory alloy plate is attached to the side edge in the width direction of the adjacent main body sheet, and the ambient temperature near the opening reaches a predetermined high temperature state. 5. The fireproof sheet shutter closing sheet structure according to claim 1, wherein the flameproof sheet is folded back to the closing sheet side by shape deformation. The closing sheet is wound around the sub-winding shaft that is synchronized with the winding operation of the winding shaft that winds the main body sheet, and the main body section that is fed above the feeding position to the opening of the main body sheet. A pair of feed rollers that regulate the feeding direction of the sheet and closing sheet are juxtaposed at the upper and lower spaced positions where the roller feeding locus forms an S shape in side view, and the fastening operation of the surface fastener and the fixing pin for the fixing plate 7. The closing sheet structure for a fireproof sheet shutter according to claim 1, wherein the inserting operation is performed between the upper feed roller and the lower feed roller.

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