JP2015068024A - Shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shutter for suppressing firing when combustible gas flows out of a winding shaft in a shutter box in fire.SOLUTION: The shutter comprises a frame body 1 of framing an upper frame 10, a lower frame 11 and left-right jambs 12 and 12, and the upper frame 10 comprises a shutter box 2 for supporting and freely storing by hoisting a door body 3, and the shutter box 2 comprises a winding shaft 20 for freely winding the door body 3, and refractory materials 52d and 53g are arranged in both end parts of the winding shaft 20, and block up both end parts of the winding shaft 20 in fire.

Description

  The present invention relates to a shutter provided with a shutter box that houses a rollable door on an upper frame of a frame provided in a building opening, and more particularly to a shutter that can suppress ignition in the shutter box in the event of a fire.

  A shutter provided with a shutter box that houses a rollable door on the upper frame of the frame may be provided at the opening of the building. The door body of the shutter is configured by connecting a plurality of slats in the vertical direction. Further, the shutter box is fixed to the outdoor side surface of the building frame and includes a winding shaft inside which the door body can be wound. An example of such a shutter is disclosed in Patent Document 1.

JP 2010-163740 A

  In some cases, a shutter requires high fire performance. When the shutter is exposed to high temperatures in the event of a fire, the resin material used in the shutter melts and generates combustible gas, but to achieve high fire prevention performance, the combustion of the combustible gas is suppressed. There is a need to.

  A winding shaft provided in the shutter box is formed in a hollow cylindrical shape, and a plurality of parts including a resin member are accommodated in the hollow interior. For this reason, at the time of a fire, the resin member in the winding shaft is melted, and there is a possibility that combustible gas generated thereby flows out of the winding shaft and ignites.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a shutter that suppresses ignition due to a combustible gas flowing out of a winding shaft in a shutter box in the event of a fire.

In order to solve the above-mentioned problem, a shutter according to the invention of claim 1 has a frame formed by framing an upper frame, a lower frame, and left and right vertical frames, and the upper frame supports the door body and rolls up. In a shutter with a retractable shutter box,
The shutter box has a winding shaft on which the door body can be freely wound, and fireproof materials are arranged at both ends of the winding shaft.

  According to the first aspect of the present invention, both ends of the winding shaft are closed by the refractory material when a fire occurs, and the outflow of combustible gas from the winding shaft can be suppressed.

  The shutter according to claim 2 is characterized in that the refractory material is disposed on at least one of the side members constituting the shutter box so as to face the end surface of the winding shaft. Has been.

  According to the second aspect of the present invention, the end surface of the fixed shaft portion can be closed by expanding the refractory material from the side member during a fire.

  Furthermore, in the shutter according to the invention of claim 3, the take-up shaft is rotatably held on a fixed shaft portion fixed to a side member constituting the shutter box, and an outer peripheral side of the fixed shaft portion. And the refractory material is arranged at the end of the fixed shaft and the end of the rotary shaft.

  According to the invention which concerns on Claim 3, each end part of a fixed-shaft part and a rotating shaft part can be plugged up with a refractory material at the time of a fire, and the outflow of combustible gas can be suppressed.

  Furthermore, the shutter according to the invention of claim 4 is characterized in that an end member is provided at at least one end of the fixed shaft portion, and a refractory material is provided inside the end member. .

  According to the invention which concerns on Claim 4, the end part of a fixed shaft part and a rotating shaft part can be plugged up with the fireproof material of an end member at the time of a fire, and the outflow of combustible gas can be suppressed.

  And the shutter which concerns on invention of Claim 5 is comprised by the said refractory material being arrange | positioned so that the said rotating shaft part may be opposed to at least one edge part of the said fixed shaft part.

  According to the invention which concerns on Claim 5, an end surface of a rotating shaft part can be plugged up by a refractory material expanding at the time of a fire.

  The shutter according to the invention of claim 6 is characterized in that a refractory material is disposed between the outer peripheral surface of the fixed shaft portion and the inner peripheral surface of the rotary shaft portion.

  According to the invention which concerns on Claim 6, the space between a fixed shaft part and a rotating shaft part can be obstruct | occluded in a longitudinal direction, and the outflow of combustible gas from the obstruct | occluded space can be suppressed.

  Further, the shutter according to the invention of claim 7 is characterized in that the fixed shaft portion is formed in a hollow cylindrical shape, and a refractory material is disposed inside the hollow.

  According to the invention which concerns on Claim 7, the hollow inside of a fixed shaft part can be obstruct | occluded with a refractory material, and it can suppress that combustible gas flows out along the longitudinal direction of a fixed shaft part.

  Furthermore, the shutter according to the invention of claim 8 has a winding portion that is wound around the winding shaft by one or more rounds when the door body is in a fully closed state, and is fixed to a drawer side end portion of the winding portion. A refractory material is arranged between the side end portions.

  According to the eighth aspect of the present invention, the entire circumference of the winding shaft can be covered by the winding portion, and the space at the end portion on the drawer side can be closed with the refractory material, so that the combustible gas from the winding shaft can be obtained. Can be more reliably prevented.

  According to the shutter of the present invention, it is possible to effectively prevent the combustible gas from flowing out of the winding shaft in the shutter box in the event of a fire, and to suppress the ignition due to the outflow of the combustible gas.

It is a longitudinal cross-sectional view of the shutter in this embodiment. It is a cross-sectional view of the shutter in this embodiment. It is a disassembled perspective view of the side member and back cover member which comprise a shutter box. It is a front view of the side member to which a heating foam material is attached. It is a perspective view of a winding shaft. It is a front view of the 1st member. It is a disassembled perspective view of a 2nd member. It is a front view of a winding shaft. It is a front view of the winding axis | shaft in the state at the time of fire outbreak. It is a longitudinal cross-sectional view of the shutter box vicinity in the state at the time of fire outbreak.

  Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal sectional view of the shutter in the present embodiment, and FIG. 2 is a transverse sectional view of the shutter in the present embodiment. As shown in each of these drawings, the shutter of the present embodiment includes an inner frame 4 and an outer frame 5 in a frame 1 that is formed by forming an upper frame 10, a lower frame 11, and left and right vertical frames 12, 12 in a rectangular shape. The upper frame 10 is provided with a shutter box 2 so that the door body 3 can be stored, and the door body 3 can be pulled out from the shutter box 2.

  The inner and outer children 4 and 5 have a panel body 7 made of a glass plate in a housing 6 in which an upper collar 30 and a lower collar 31 and left and right vertical collars 32 and 32 are assembled in a square shape. It is configured. The lower frame 11 constituting the frame 1 is formed with an inner rail portion 11a that guides the inner shoji 4 in the longitudinal direction and an outer rail portion 11b that guides the outer shoji 5 in the longitudinal direction. Further, the upper frame 10 constituting the frame body 1 includes an upper inner rail portion 10a for guiding the upper side of the inner shoji 4 in the longitudinal direction, and an upper outer rail portion 10b for guiding the upper side of the outer shoji 5 in the longitudinal direction. Is formed.

  The shutter box 2 has an upper surface portion 40, a lower surface portion 41, and left and right side surface portions 42, 42, and a winding shaft 20 is attached to the side surface member 18 constituting the side surface portion 42. The winding shaft 20 can wind the door body 3 formed by connecting a large number of slats 22 in the vertical direction, and is configured to be able to store the door body 3 in the shutter box 2. The door body 3 can be pulled out downward from an opening 21 formed in the lower part of the shutter box 2. FIG. 1 shows a state in which the door body 3 is pulled out and fully closed.

  The upper frame 10 having the shutter box 2 includes an upper member 15 constituting the upper surface portion 40 and a lower member 16 constituting the lower surface portion 41, and the shutter box 2 further includes a side surface member constituting the side surface portion 42. 18 and a cover member 17 constituting the outdoor side surface of the shutter box 2 from the upper member 15. In addition, a back cover member 19 is provided so as to cover the building housing side of the space for housing the door 3 of the shutter box 2. The back cover member 19 is disposed so as to be opposed to the outer surface 50 of the housing chamber.

  A guide rail member 13 that guides the left and right ends of the door body 3 in the vertical direction is provided on the outdoor side of the vertical frame 12. The guide rail member 13 includes a concave guide portion 13 a that swallows the left and right end portions of the door body 3.

  At the lower end portion of the door body 3, a skirting member 23 having a width over substantially the entire length between the guide rail members 13 is provided. The skirting member 23 has an integral handle portion 23b protruding in an inverted L shape on the outdoor side of the outdoor side wall 23a formed in a planar shape. As shown in FIG. 2, resin contact members 24, 24 are provided near the left and right ends of the lower end portion of the door body 3. For this reason, the both ends of the skirting board member 23 are arranged closer to the center than the ends of the door body 3.

  A groove-shaped recess 11 c that can accommodate the lower end of the baseboard member 31 is formed on the outdoor side of the lower frame 11. By arranging the skirting member 31 at the lower end of the frame body 1, the lower end of the skirting member 31 is accommodated in the recess 11 c and the outdoor side surface of the lower frame 11 constituting the recess 11 c It will be in the state where the handle part 31b straddled.

  Next, the fire prevention structure in the shutter box 2 will be described in detail. FIG. 3 shows an exploded perspective view of the side member 18 and the back cover member 19 constituting the shutter box 2. The side members 18 constituting the side portions 42 on both sides of the shutter box 2 are arranged so as to face each other, and an opening constituting an opening portion 21 for pulling out the door body 3 is provided between the lower end front side ends of the side members 18. The auxiliary member 25 is passed, and the back cover member 19 is passed between the back surfaces of the side members 18.

  A bearing portion 18 a for supporting and fixing the winding shaft 20 is formed at the center of the inner surface of the side member 18. On one side member 18, the side member 18 on the front side in FIG. 3, a heating foam material 26 is attached so as to cover the bearing portion 18 a and the periphery thereof. The heated foam material 26 is a kind of refractory material, and can be expanded and expanded in the surface direction by being exposed to a high temperature during a fire, thereby closing the space.

  FIG. 4 shows a front view of the side member 18 to which the heating foam material 26 is attached. As shown in this figure, the heating foam material 26 is formed to have a substantially octagonal shape, and is fixed to the inner surface of the side member 18 where the bearing portion 18a is formed. Accordingly, the heating foam material 26 faces the end surface of the winding shaft 20 supported by the bearing portion 18a.

  The detailed structure of the winding shaft 20 will be further described. FIG. 5 shows a perspective view of the winding shaft 20. The winding shaft 20 includes a fixed shaft portion 50 that is fixed to the side member 18 and does not rotate, and a hollow cylindrical rotating shaft portion 51 that is rotatably held by the fixed shaft portion 50. The edge part of the door body 3 is fixed to. Therefore, the door body 3 can be wound or pulled out with the rotation of the rotating shaft portion 51.

  The fixed shaft portion 50 includes a first member 52 fixed to the side member 18 on one end side and a second member 53 fixed to the side member 18 on the other end side. Separated in the longitudinal direction. The first member 52 and the second member 53 respectively support one side and the other side of the rotating shaft portion 51 so as to be rotatable. Moreover, the 1st member 52 has the motor (not shown) which rotationally drives the rotating shaft part 51 electrically, and the 2nd member 53 biases the door body 3 in the direction which opposes its own weight. It has a biasing member 53c. The heating foam material 26 provided on the side member 18 described above faces the end surface of the first member 52. In the first member 52, resin parts are used.

  The rotating shaft portion 51 is formed with two fixing hole portions 51a on the peripheral surface on the side where the first member 52 is disposed, and the fixing piece 51b is inserted into each of the fixing hole portions 51a. Fixed with screws. For this reason, as for the rotating shaft part 51, the part of the fixed hole part 51a is not completely sealed.

  FIG. 6 shows a front view of the first member 52. The first member 52 is formed to have a substantially cylindrical shape, and a rotation support portion 52b capable of rotatably supporting the end portion of the rotary shaft portion 51 in the vicinity of the end portion 52c supported by the side member 18. Is provided. A heating foam material 52d is disposed along the peripheral surface of the end 52c. The heating foam material 52d is fixed to the peripheral surface of the first member 52 by a metal fixing band 52f.

  An end of the first member 52 opposite to the side supported by the side member 18 is provided with a power transmission support portion 52a that is rotatable in conjunction with an internal motor. The power transmission support portion 52a has a structure that receives the inner peripheral surface of the rotating shaft portion 51 on the peripheral surface. Thereby, the rotating shaft 51 can be rotated by rotating the motor and rotating the power transmission support 52a.

  On the peripheral surface of the first member 52, two heating foam materials 52e and 52e are arranged apart from each other between the power transmission support portion 52a and the rotation support portion 52b. These heating foam materials 52e are also fixed to the peripheral surface of the first member 52 by a metal fixing band 52f, similarly to the heating foam material 52d at the end 52c. Between the two heating foam materials 52e and 52e, it arrange | positions so that the fixing hole part 51a of the rotating shaft part 51 may be pinched | interposed in the longitudinal direction of the winding shaft 20. FIG.

  FIG. 7 shows an exploded perspective view of the second member 53. The second member 53 is configured by attaching some parts to a central cylindrical body 53a made of a metal pipe. In the vicinity of both end portions of the central cylindrical body 53a, support portions 53b capable of rotatably holding the rotary shaft portion 51 are provided. A biasing member 53c that biases the door body 3 is provided near the end of the central cylindrical body 53a on the center side of the winding shaft 20. The center cylindrical body 53a is hollow inside over its entire length, and a heating foam material 53d is inserted into this hollow interior. Moreover, the heating foam material 53h is provided along the peripheral surface of the center cylinder 53a so that it may adjoin the support part 53b arrange | positioned at the edge part side of the winding shaft 20. FIG.

  A ring-shaped end member 53e is attached to the end portion side of the support portion 53b provided in the central cylindrical body 53a. The end member 53e is disposed between the support portion 53b and the side member 18 of the shutter box 2. A heating foam material 53f is attached to the end member 53e so as to face the axial direction. Although not shown in FIG. 7, the end member 53e also has the heating foam material 53g on the surface opposite to the heating foam material 53f. One heating foam material 53f of the end member 53e faces the end surface of the rotating shaft portion 51 supported by the support portion 53b, and the other heating foam material 53g of the end member 53e faces the side member 18. .

  FIG. 8 shows a front view of the winding shaft 20. An end portion 52c of the fixed shaft portion 50 constituted by the first member 52 is exposed from the rotating shaft portion 51, and a heating foam material 52d provided on the end portion 52c is disposed in the vicinity of the end surface of the fixed shaft portion 50. By doing so, it is disposed between the rotation support portion 52 b and the side member 18 of the shutter box 2. Moreover, the two heating foam materials 52e and 52e provided in the first member 52 are arranged so as to sandwich the fixed hole portion 51a provided in the rotating shaft portion 51 in the longitudinal direction of the winding shaft 20 as described above. . The heating foam material 26 attached to the side member 18 is also shown in FIG. The heating foam material 26 of the side member 18 is disposed so as to face the end surface of the first member 52 constituting the fixed shaft portion 50.

  The heating foam material 53h provided on the outer peripheral surface of the central cylindrical body 53a constituting the second member 53 is disposed adjacent to the support portion 53b, thereby being disposed at the end of the rotating shaft portion 51. . In the end member 53e, a heating foam material 53f facing the end surface of the rotating shaft portion 51 and a heating foam material 53g facing the side member 18 are arranged. In addition, a heating foam material 53d is inserted in the vicinity of the end portion inside the central cylindrical body 53a.

  In FIG. 9, the front view of the winding shaft 20 in the state at the time of fire occurrence is shown. When a fire occurs and the shutter is exposed to a high temperature, each heated foam material expands and expands mainly in the surface direction. The heating foam material 26 provided on the side member 18 foams toward the end portion 52 c of the first member 52 that becomes the end surface of the winding shaft 20, and covers the end surface of the first member 52. The heating foam material 52d provided at the end portion 52c of the first member 52 foams so as to increase the diameter of the end portion 52c, and covers the end surface of the rotating shaft portion 51 on the first member 52 side. As a result, at the end of the winding shaft 20 on the first member 52 side, both the fixed shaft portion 50 and the rotating shaft portion 51 are covered with the heating foam material, and the combustible gas in the winding shaft 20 is taken up by the winding shaft 20. Outflow from the end face of the can be prevented.

  The heating foam materials 52e and 52e provided on the peripheral surface of the first member 52 foam so as to enlarge the diameter of the first member 52, respectively, and block between the first member 52 and the rotating shaft portion 51. Thereby, the clearance gap between the 1st member 52 between the heating foam materials 52e and 52e and the rotating shaft part 51 is sealed from the clearance gap between the 1st member 52 and the rotating shaft part 51 of an area | region other than that. In this region, as described above, the fixed hole portion 51a is formed in the rotary shaft portion 51. By sealing the region, the combustible gas generated in the winding shaft 20 is fixed to the fixed hole portion. The outflow from 51a can be suppressed.

  The heating foam material 53g provided on the surface of the second member 53 facing the side member 18 of the end member 53e foams toward the side member 18 and closes the space between the end member 53e and the side member 18. The heating foam material 53d inserted into the central cylinder 53a is filled so as to close the hollow interior of the central cylinder 53a. As a result, one end portion of the fixed shaft portion 50 of the winding shaft 20 can be closed with a heating foam material in the event of a fire, and combustible gas flows out from the end portion of the central cylindrical body 53a communicating with the inside of the winding shaft 20. Can be suppressed.

  The heating foam material 53h disposed adjacent to the support portion 53b of the second member 53 foams so as to increase the diameter of the central cylindrical body 53a, and covers the end surface of the support portion 53b on the winding shaft 20 center side. Further, the heating foam material 53f provided on the surface of the end member 53e facing the end surface of the rotation shaft portion 51 foams toward the end surface of the rotation shaft portion 51, closes the end surface of the rotation shaft portion 51, and supports the support portion. The end surface of the side member 18 side of 53b is covered. By these, one end part of the rotating shaft part 51 of the winding shaft 20 can be closed with a heating foam material in the event of a fire, and the combustible gas generated in the rotating shaft part 51 can be prevented from flowing out.

  In summary, the heating foam material 26 arranged on the side member 18 among the heating foam materials provided at various locations of the winding shaft 20 and the side member 18 is the first member 52 constituting the fixed shaft portion 50. The heating foam material 52d that closes the end surface and is disposed at the end portion 52c of the first member 52 closes the end surface of the rotating shaft portion 51 and is disposed within the central cylindrical body 53a that constitutes the second member 53. The heating foam material 53f disposed on the side member 18 side surface of 53d and the end member 53e closes the end surface of the central cylindrical body 53a constituting the fixed shaft portion 50, and the surface of the end member 53e on the rotating shaft portion 51 side. The heating foam material 53g arranged adjacent to the arranged heating foam material 53g and the support portion 53b of the central cylinder 53a closes the end surface of the rotating shaft portion 51. That is, the end surfaces of the fixed shaft portion 50 and the rotating shaft portion 51 at both ends of the take-up shaft 20 by these heating foam materials are closed during a fire. Since the end surfaces of the fixed shaft portion 50 and the rotating shaft portion 51 are not sealed, in the event of a fire, there is a risk that combustible gas generated by melting of the resin parts inside the first member 52 may flow out. Outflow can be suppressed by closing each end face.

  In addition, the outflow of combustible gas from the fixed hole portion 51 a formed in the rotating shaft portion 51 is caused by the heating foam materials 52 e and 52 e arranged between the fixed shaft portion 50 and the rotating shaft portion 51 in the first member 52. Suppressed by blockage.

  As shown in FIG. 1, in the fully closed state in which the door body 3 is lowered, the door body 3 is wound around the winding shaft 20 by a length obtained by adding one slat 22 to one turn of the winding shaft 20. It has been turned. The portion wound around the winding shaft 20 in the fully closed state of the door body 3 covers the entire circumference of the winding shaft 20 as a winding portion 3a. A heating foam material 3b is disposed between the drawing-side end 3c and the fixed-side end 3d of the winding portion 3a. The heating foam material 3b is disposed over substantially the entire width of the slat 22 constituting the winding portion 3a.

  FIG. 10 shows a longitudinal sectional view of the vicinity of the shutter box 2 in the state at the time of fire occurrence. As shown in this figure, when a fire occurs and the shutter is exposed to a high temperature, the heating foam 3b provided in the winding part 3a expands by foaming, and the region between the slats 22 of the winding part 3a is expanded. Block.

  Since the door body 3 has the winding part 3a, even when the door body 3 is in the fully closed state, the winding shaft 20 is entirely covered by the slats 22, and is temporarily combustible from the peripheral surface of the winding shaft 20. Even if the gas flows out, the combustible gas is prevented from leaking into the shutter box 2, and the end of the winding side of the winding portion 3a is closed by the heating foam 3b, so that the combustible gas is more reliably Can be prevented.

  Although the embodiment of the present invention has been described above, the application of the present invention is not limited to this embodiment, and can be applied in various ways within the scope of its technical idea. For example, in the present embodiment, the heated foam material for closing both ends of the fixed shaft portion 50 is arranged on the side member 18 on one side and on the take-up shaft 20 on the other side. The arrangement of the present embodiment is not limited as long as it can be closed. Moreover, although this embodiment showed about what drives the winding shaft 20 electrically, Even if it drives manually, this invention is applicable.

DESCRIPTION OF SYMBOLS 1 Frame body 2 Shutter box 3 Door body 3a Winding part 3b Heating foam material 4 Inner shoji 5 Outer shoji 6 Housing 7 Panel body 10 Upper frame 11 Lower frame 12 Vertical frame 13 Guide rail member 18 Side member 18a Bearing part 20 Winding Take-up shaft 21 Opening portion 22 Slat 23 Skirting member 26 Heating foam material 50 Fixed shaft portion 51 Rotating shaft portion 51a Fixed hole portion 52 First member 52a Power transmission support portion 52b Rotation support portion 52c End portion 52d Heating foam material 52e Heating foam Material 53 Second member 53a Center cylinder 53b Support portion 53c Energizing member 53d Heating foam material 53e End member 53f Heating foam material 53g Heating foam material 53h Heating foam material

Claims (8)

In a shutter having a frame body formed by framing an upper frame, a lower frame, and left and right vertical frames, the upper frame supports a door body and has a shutter box that can be rolled up and stored.
The shutter box has a winding shaft on which the door body can be freely wound, and a refractory material is disposed at both ends of the winding shaft.   The shutter according to claim 1, wherein the refractory material is disposed on at least one of side members constituting the shutter box so as to face an end surface of the take-up shaft.   The winding shaft includes a fixed shaft portion fixed to a side member constituting the shutter box, and a rotation shaft portion rotatably held on an outer peripheral side of the fixed shaft portion, and the fixed shaft 3. The shutter according to claim 1, wherein the refractory material is disposed at an end of the part and an end of the rotating shaft part. 4.   The shutter according to claim 3, wherein an end member is provided at at least one end of the fixed shaft portion, and a refractory material is provided inside the end member.   The shutter according to claim 3 or 4, wherein the refractory material is disposed at at least one end of the fixed shaft portion so as to face the rotating shaft portion.   The shutter according to any one of claims 3 to 5, wherein a refractory material is disposed between an outer peripheral surface of the fixed shaft portion and an inner peripheral surface of the rotary shaft portion.   The shutter according to any one of claims 3 to 6, wherein the fixed shaft portion is formed in a hollow cylindrical shape, and a refractory material is disposed inside the hollow.   The door body has a winding portion that is wound around the winding shaft one or more times in a fully closed state, and a refractory material is disposed between the drawing-side end portion and the fixed-side end portion of the winding portion. The shutter according to any one of claims 1 to 7, wherein:

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