JP5530402B2 - Shielding device - Google Patents

Description

  The present invention relates to a shielding device, and more particularly to a shielding device such as a shutter that covers an outdoor side of a fitting such as a window and shields an opening.

DESCRIPTION OF RELATED ART Conventionally, shielding apparatuses, such as a shutter which is provided in fittings, such as a window, and covers the outdoor side, are utilized widely (for example, refer patent document 1).
The shutter described in Patent Document 1 includes a guide rail that opens and closes a shutter curtain (shielding surface material), and a shutter case (storage box) that can store the shielding surface material, and is wound inside the storage box. A take-up drum (winding shaft body) is rotatably supported, and a shielding surface material is wound around the winding shaft body and stored in a storage box, and the shielding surface material is fully opened. The winding shaft body includes a cylindrical member that winds up the shielding surface material, a plurality of rotating wheels that are provided inside and at the end of the cylindrical member, and a shaft that connects the wheels, and the end of the shaft is accommodated. It is pivotally supported by the box. Further, in the case of an electric shutter, an electric motor is provided that is fixed to the storage box and provided inside or outside the cylindrical member, and this electric motor rotates and drives a wheel and a shaft through appropriate gears and the like. It is configured as follows.

Japanese Patent Application Laid-Open No. 11-50764

  By the way, in the conventional shielding apparatus as described in Patent Document 1, since many resin parts are used for the inside of the winding shaft body, the electric motor, and the like, the resin parts are caused by the heat of the fire. It may melt and generate flammable gas. For this reason, even if the predetermined fire prevention performance is ensured as the shielding device, if the constituent members inside the winding shaft body melt, the clearance between the wheel and the shaft, the clearance between the wheel and the cylindrical member, the shaft There is a possibility that the gas leaks into the storage box from the end or the like, and the leaked gas may cause a reduction in fire prevention performance.

  The objective of this invention is providing the shielding apparatus which can improve a fireproof performance reliably.

  The shielding device of the present invention is a shielding device capable of covering the outdoor side of a fitting provided in an outer wall opening and shielding the opening, and a shielding frame and a shield supported by the shielding frame so as to be opened and closed. A surface box, a storage box that stores the opened shielding surface, and a winding shaft that is rotatably provided inside the storage box and winds the shielding surface. And a cylindrical portion that winds up the shielding surface material, and a shaft portion that is supported by projecting from the cylindrical portion toward the storage box, and at least from the end portion of the cylindrical portion of the shaft portion. A covering covering the outer periphery is provided, and a thermally expandable refractory material is provided between the shaft portion and the covering.

  According to the present invention described above, by providing a thermally expandable refractory material between the shaft portion of the winding shaft body and the cover, the inside of the cover is closed by the refractory material thermally expanded by the heat of the fire. Even if there is a gap between the end of the tubular portion and the shaft portion, this gap can be reliably closed. Therefore, even if the components inside the take-up shaft body are melted by heat, the gas generated from the melted member can be prevented from leaking from the shaft side to the inside of the storage box body, thereby preventing the ignition of the gas. The fireproof performance can be improved with certainty.

Under the present circumstances, in the shielding apparatus of this invention, it is preferable that the said thermally expansible refractory material overlaps with the edge part of the said cylindrical part.
According to such a configuration, when the wheel is provided at the end of the cylindrical part and the shaft part, or when the wheel is provided at the end of the cylindrical part, the thermal expansion refractory material is provided between the cylindrical part and the wheel. Therefore, the winding shaft body can be reliably closed and the sealing property and heat insulating property of the winding shaft body can be improved.

Further, in the shielding device of the present invention, the shielding surface material has an excess winding portion that is wound around the winding shaft body by at least one turn in a state where the shielding surface material fully closes the opening. It is preferable that the surplus winding portion constitutes the covering, and the thermally expandable refractory material is attached to an inner peripheral surface of the surplus winding portion facing the shaft portion.
According to such a configuration, by forming the covering by winding the surplus winding portion of the shielding face material around the winding shaft one or more times, compared to the case where the covering is configured by a separate member, The number of members can be reduced, and the number of assembly steps can be reduced. Moreover, by attaching a heat-expandable refractory material to the inner peripheral surface of the surplus winding part, it is easy to attach the refractory material and make it difficult to drop off. That is, the inner peripheral surface of the surplus winding portion usually has a smaller curvature (a larger diameter) and a longer peripheral length than the cylindrical portion of the winding shaft and the outer peripheral surface of the shaft portion. The inner circumferential surface of the surplus winding part can be easily attached with the heat-expandable refractory material and can be hardly peeled off. In addition, since the shutter slat generally used as a shielding surface material is formed in a concave cross-section opening on the inner peripheral surface side, by attaching a thermally expandable refractory material to the bottom surface of this recess, the shielding surface It is possible to prevent the refractory material from coming into contact with other parts during the winding of the material, and to prevent the material from falling off.

Further, in the shielding device of the present invention, a through-hole penetrating the peripheral surface of the cylindrical portion is provided at a position that is at least one of the intermediate portions of the cylindrical portion and is covered with the excessive winding portion. It is preferable.
According to such a configuration, by providing the through hole in the cylindrical part, the gas generated inside the cylindrical part can be exhausted from the through hole to the space between the cylindrical part and the excess winding part. Thus, the flow of gas to the shaft portion side can be suppressed, and the gas can be prevented from leaking from the end portion of the cylindrical portion. Furthermore, even if the gas exhausted between the outer peripheral surface of the cylindrical portion and the surplus wrapping portion burns in this space, the flame does not leak outside the surplus wrapping portion. Can be reliably prevented.
Here, the shielding device omits the heat-expandable refractory material between the shaft portion and the covering body, and the shielding face material is wound around the winding shaft body by at least one turn in the fully closed state. The surplus winding portion, the covering is constituted by the surplus winding portion, and the cylinder is located at a position that is at least one of the intermediate portions of the cylindrical portion and is covered by the surplus winding portion. The structure provided with the through-hole which penetrates the surrounding surface of a shape part is employable.
In other words, if a sufficient space for retaining gas is formed between the cylindrical portion and the surplus winding portion, the leakage of gas from the inside to the outside can be prevented, and the fireproof performance Can be increased.

Moreover, in the shielding apparatus of this invention, it is preferable that a thermally expansible fireproof material is provided in at least one among the front-end | tip part of the said axial part, and the bearing part of the said storage box.
According to such a configuration, by providing the heat-expandable refractory material at the tip portion of the shaft portion or the bearing portion of the storage box body, for example, the shaft portion is configured by a hollow cylindrical member and a cable or the like is inserted. Even in this case, the end opening of the shaft portion can be closed with a refractory material, and the fireproof performance can be further improved. In addition, as the cable inserted into the shaft part, wiring connected to the operation part for emergency opening for opening the shielding surface material from the outdoor side in the event of an emergency such as a fire can be exemplified, and such wiring is provided. An emergency opening operation can be ensured by closing the end opening of the shaft portion to be fired.

It is a longitudinal cross-sectional view which shows the fitting containing the shielding apparatus which concerns on embodiment of this invention. It is a disassembled perspective view which shows the said shielding apparatus. It is the longitudinal cross-sectional view which shows the said shielding apparatus, and the front view of a shielding surface material. It is a perspective view which shows the principal part of the said shielding apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, the external shutter 10 which is a shielding apparatus of this embodiment is provided in the outdoor side of the sliding window 1 as a fitting. The sliding window 1 is provided in an opening of an outer wall in a building such as a detached house, and includes a window frame 2 and a pair of indoor and outdoor shojis 3, and the window frame 2 includes an upper frame 2A and a lower frame. 2B and left and right vertical frames are configured with a four-round frame. The external shutter 10 includes a shutter frame 11 as a shielding frame body fixed to an outer wall, a shutter surface material 12 as a shielding surface material supported by the shutter frame 11 so as to be vertically openable and closable and retractable upward, and open. A shutter case 13 as a storage box for storing the shutter face material 12, and a rotary drum 30 as a winding shaft body that is pivotally supported by the shutter case 13 and winds up the shielding face material. Yes.

  The shutter frame 11 includes a shutter upper frame 14 positioned above the upper frame 2A, a shutter lower frame 15 positioned below the lower frame 2B, and left and right shutter vertical frames 16 positioned outside the left and right vertical frames. And a lintel 17 installed between the left and right shutter vertical frames 16 above the upper frame 2A and below the shutter upper frame 14, and the shutter upper frame 14, the shutter lower frame 15, A shutter vertical frame 16 and a lintel 17 are fixed to the outer wall. The shutter upper frame 14, the lintel 17 and the shutter vertical frame 16, the front panel 18 attached to these front surfaces, and the side panel 19 attached to the upper end of the shutter vertical frame 16 constitute a shutter case 13. ing. The shutter case 13 has an insertion port 20 between the lower lintel 17 and the front panel 18, and stores the shutter face material 12 that is inserted through the insertion port 20 and rolled up. . Further, as shown in FIGS. 2 and 3, a metal support member 21 fixed to the outer wall is provided inside the shutter case 13, and the rotating drum 30 is supported by the support member 21. The support member 21 includes a back surface portion 211 fixed to the outer wall and a pair of side surface portions 212 extending from both end portions of the back surface portion 211 to the outdoor side.

  The shutter face material 12 is configured by connecting a plurality of slats 22 up and down, and connecting a seat plate 23 to the lowermost slat 22, and is wound around and stored in a rotating drum 30 inside the shutter case 13. It is designed to be opened when stored. Further, the shutter face member 12 is guided by guide rails 161 provided on the left and right shutter vertical frames 16 that are a pair of frame members, and can be opened and closed up and down. By being engaged, the window frame 2 and the shoji 3 are covered and closed on the outdoor side. Further, the shutter face material 12 has an excessive winding portion 24 wound around the rotating drum 30 by an extra amount in the fully opened state, and a covering covering the outer periphery of the rotating drum 30 by the excessive winding portion 24 is provided. It is configured. Here, the surplus winding part 24 is composed of about six slats 22.

  The rotating drum 30 includes a winding pipe 31 as a cylindrical portion that winds up the shutter face material 12, a wheel 32 fitted into one end of the winding pipe 31, and a wheel 32 that is rotatably supported by the wheel 32. A shaft 33 projecting from the shaft, a tubular motor 34 inserted from the other end of the winding pipe 31, a clutch 36 for transmitting the driving force of the tubular motor 34 to the wheel 32, the winding pipe 31 and the shaft. And a coil spring 37 spanned between the two. The take-up pipe 31 is formed in a cylindrical shape as a whole, and is formed in a groove shape along the longitudinal direction on its peripheral surface to fix the upper end portion (the uppermost slat 22) of the shutter face material 12. A groove 311 and a groove 312 along the longitudinal direction are formed on the opposite side of the fixed groove 311. A through hole 313 that penetrates the circumferential surface of the winding pipe 31 inward and outward is formed at an intermediate position between the tubular motor 34 and the wheel 32 on the bottom surface of the recessed groove portion 312.

  In the rotary drum 30, the shaft 33 on one end side is fixed to a bracket 25 as a bearing portion provided on one side surface 212 of the support member 21, and the tubular motor 34 on the other end side is fixed to the other side surface portion of the support member 21. The motor bearing portion 28 provided at 212 is fitted and fixed. And it is comprised so that the wheel 32 and the winding pipe 31 can be rotated via the clutch 36 by the rotational drive of the tubular motor 34, and the shutter face material 12 can be wound up and opened by this, ie, the external shutter 10 is Electric shutter. Further, the external shutter 10 is provided with an opening device 40 for manually opening the shutter face material 12 from the outdoor side in an emergency, and a wire 41 inserted from the opening device 40 into the shaft 33 of the rotary drum 30 is a clutch. 36. Then, by operating the opening device 40 to release the connection between the clutch 36 and the tubular motor 34, the rotation of the wheel 32 and the take-up pipe 31 with respect to the tubular motor 34 becomes free. It is configured so that it can be opened.

  In the external shutter 10 described above, a heat-expandable refractory material 26 is provided on the excessive winding portion 24 of the shutter face material 12. Specifically, as shown in FIG. 3 and FIG. 4, in the excessive winding portion 24, a position covering the wheel 32 and the shaft 33 on one end side of the rotary drum 30, from the end portion of each slat 22. A heat-expandable refractory material 26 is provided in a range up to a position overlapping with one end of the winding pipe 31. These thermally expandable refractory materials 26 are attached to the inner surface of the excessively wound portion 24 that is in the concave portion of the slat 22 and faces the shaft 33 and the winding pipe 31. Here, as the heat-expandable refractory material 26, various refractory materials that are expanded by the heat of a fire can be used. . Such a refractory material 26 is heated from a normal state, so that it expands from a dozen times to a few dozen times in volume ratio, and the excess winding portion 24, the side surface portion 212, and the take-up pipe 31 are expanded. The space S formed by the wheel 32 and the shaft 33 is closed.

  Therefore, even if the resin parts provided in the rotary drum 30 and the tubular motor 34 are heated and melted to generate flammable gas, this gas is firstly passed through the through-hole 313 and the winding pipe 31. It accumulates in the space between the excess winding part 24 and does not flow to the shaft 33 side. Even if the gas accumulated between the take-up pipe 31 and the surplus winding part 24 ignites, this flame does not reach the inside or outside of the shutter case 13 or the indoor space. Further, even if the gas inside the winding pipe 31 flows to the shaft 33 side and flows out to the one side from the gap between the shaft 33 and the wheel 32 or the gap between the wheel 32 and the winding pipe 31, the space S is excessively wound. Since the gas is not leaked into the shutter case 13 because it is covered with the attachment portion 24, the flame can be held in the space S by the expanded thermally expandable refractory material 26 even if the gas is ignited. It has become.

  Further, on one side surface 212 of the support member 21 on which the bracket 25 is provided, a thermally expandable refractory material 27 is provided so as to face the tip of the shaft 33. The refractory material 27 is heated and expanded to close the opening at the tip of the shaft 33 and close the gap between the shaft 33, the bracket 25, and the side surface portion 212. Even if the flammable gas generated in the gas flows to the tip end side of the shaft 33, the gas does not reach the inside or outside of the shutter case 13 or the indoor space. The refractory material 27 is not limited to the side surface portion 212 but may be provided at the tip portion of the shaft 33 or may be provided at both of them.

According to this embodiment, there are the following effects.
That is, since the outer periphery of the rotating drum 30 is covered by the surplus winding part 24 of the shutter face material 12, and the space S is closed by a thermally expandable refractory material 26 provided on the inner surface of the surplus winding part 24, Even if the constituent members inside the winding pipe 31, the tubular motor 34, etc. are melted by heat and flammable gas is generated, this gas can be prevented from leaking into the shutter case 13. Furthermore, even if the gas is ignited, it is possible to reliably prevent the flame from reaching the inside, outside, or indoor space of the shutter case 13 and improve the fireproof performance.

In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.
For example, in the above-described embodiment, the sliding window 1 as an example of the joinery is illustrated, but the joinery is not limited to the sliding window 1 and may be a window having various opening / closing formats such as a single pulling window and a raising / lowering window.
Moreover, in the said embodiment, although the case where the external shutter 10 as a shielding apparatus was an electric shutter was illustrated, the shielding apparatus of this invention may be not only an electric shutter but a manual open / close type shutter.

Moreover, in the said embodiment, although the thermally expansible refractory material 26 was affixed on the inner surface of the slat 22 which comprises the excess winding part 24, it is not restricted to this, The thermally expansible refractory material is attached to the surface of the shaft 33 or the wheel 32. May be affixed, or a thermally expandable refractory material may be provided in the space S by an appropriate installation method without being affixed thereto.
Furthermore, in the said embodiment, although the coating body was comprised by the surplus winding part 24 of the shutter face material 12, it is not restricted to this, The outer periphery of the shaft 33 or the wheel 32 using a member different from the shutter face material 12 May be covered. For example, a covering may be formed by attaching a large number of cylindrical or polygonal pipe members or flat plates along the circumference.
Moreover, in the said embodiment, it was comprised so that the opening of the front-end | tip part of the shaft 33 might be plugged up with the heat-expandable refractory material 27 provided in the front-end | tip part of the shaft 33. When there is no covering target such as 40 wires 41, the heat-expandable refractory material 27 may be omitted.

  In the above embodiment, the through hole 313 formed in the shutter winding pipe 31 is formed in the concave groove portion 312 on the opposite side of the fixed groove 311, but the winding start position of the shutter face material 12 and the shutter winding pipe 31 are formed. In this case, the components inside the take-up pipe 31, the tubular motor 34, etc. are melted by heat to generate a flammable gas. Even if the flame is ignited, it is possible to reliably prevent the flame from reaching the interior space inside or outside the shutter case 13 or through the insertion hole 20 and improve the fireproof performance.

In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations.
Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such restrictions is included in this invention.

  DESCRIPTION OF SYMBOLS 1 ... Sliding window (joint), 10 ... External shutter (shielding device), 11 ... Shutter frame (shielding frame), 12 ... Shutter face material (shielding face material), 13 ... Shutter case (storage box), 24 ... excess winding part (covering body), 25 ... bracket (bearing part), 26, 27 ... heat-expandable refractory material, 30 ... rotating drum (winding shaft body), 31 ... winding pipe (cylindrical part), 33 ... Shaft (shaft part), 313 ... Through hole.

Claims (5)

A shielding device that covers the outdoor side of the fitting provided in the outer wall opening and can shield the opening,
A shielding frame, a shielding surface supported by the shielding frame so as to be openable and closable, a storage box for storing the opened shielding surface, and the shielding surface provided rotatably inside the storage box A take-up shaft body
The winding shaft body includes a cylindrical portion that winds up the shielding surface material, and a shaft portion that is supported by projecting from the cylindrical portion toward the storage box, and at least an end of the cylindrical portion. A shielding apparatus in which a covering body that covers the outer periphery of the shaft portion is provided from a portion, and a thermally expandable refractory material is provided between the shaft portion and the covering body.   The shielding apparatus according to claim 1, wherein the thermally expandable refractory material is provided so as to overlap an end portion of the cylindrical portion. The shielding surface material has an excessive winding portion wound around the winding shaft body by at least one turn in a state where the opening is fully closed by the shielding surface material, and the covering portion is covered by the excessive winding portion. The body is composed,
The shielding device according to claim 1 or 2, wherein the thermally expandable refractory material is attached to an inner peripheral surface of the surplus winding portion facing the shaft portion.   The shielding according to claim 3, wherein a through-hole penetrating the peripheral surface of the cylindrical portion is provided at a position that is at least one of the intermediate portions of the cylindrical portion and is covered with the excess winding portion. apparatus.   The shielding device according to any one of claims 1 to 4, wherein a thermally expandable refractory material is provided on at least one of a tip end portion of the shaft portion and a bearing portion of the storage box body.

Images