JP3755126B2 - Shutter curtain - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a building shutter provided at an opening of a building, and more particularly to a shutter curtain (slat) of a smoke-proof shutter having smoke-proof performance.
[0002]
[Prior art]
Conventionally, smoke-proof shutters have been required to minimize the gap between the slat surface and the guide surface of the guide rail that faces the slat surface in order to ensure the smoke-proof performance. A slat for a smoke-proof shutter having a flat surface formed over the entire length in the length direction has been used. In addition, many smoke-proof shutters need to ensure the performance of specific fire-proof equipment at the same time. In such shutters, iron plates with a thickness of 1.5 mm or more are roll-formed to produce slats, which are connected together. The opening was closed by a shutter curtain. (In order to provide fire resistance equivalent to the specific fire prevention equipment, the opening must be closed by an iron plate having a thickness of 1.5 mm or more, or an iron framework (hollow member) having a thickness of 0.5 mm or more on both sides. (Ministry of Construction Notification No. 1369))
[0003]
[Problems to be solved by the invention]
The smoke-proof shutter slat is optimal for reducing the gap between the guide rail guide surface and the slat surface, but the cross-sectional circle provided above the opening when the shutter is not in operation (fully opened). In this case, the slat for the smoke-proof shutter causes turbulence between the windings compared to the slat formed in a curved shape along the winding. In addition to the frictional noise generated during winding and damage to the slats, the shutter curtain storage space must be increased. On the other hand, as shown in FIG. 6B, the slat formed in a curved shape has a large gap S1 between the guide rail guide surface X and the slat surface Y when the shutter curtain is fully closed, and cannot exhibit smoke prevention performance. Furthermore, in recent years, attempts have been made to change the slats of fire-proof shutters from rolls made of conventional iron plates of 1.5 mm or more to hollow-type slats made of 0.5 mm steel slats. When trying to do so, since the slats are thick, the above-mentioned problems that occur during winding of the winding shaft are further exacerbated.
The present invention has been created to solve the above-described problems, and provides a shutter curtain that can exhibit sufficient smoke-proof performance while realizing good winding on a winding shaft. For the purpose.
[0004]
[Means for Solving the Problems]
The technical means employed by the present invention in order to achieve such a problem is to open and close the opening by guiding both ends of a shutter curtain formed by connecting a plurality of slats up and down to guide rails provided in the building opening. In the architectural shutter constructed as described above, at least two flat surfaces corresponding to the amount of insertion into the guide rails are crushed at both ends of the main body of each slat so that the shutter curtain is fully closed. , the one lower end portions on the plane of each slat is configured to abut, the longitudinal intermediate portion of the main body portion of the slat to form a curved surface protruding in the width direction than the plane, the shutter curtain At both end portions, substantially the same plane along the guide surface of the guide rail is formed over a range facing the guide surface . And by doing in this way, when the shutter curtain is fully closed, both end portions corresponding to the guide rail squeezing amount are formed with substantially the same plane, so that the gap between the guide rail guide surface and the shutter curtain can be minimized. When winding on the take-up shaft, the curved surface provided in the intermediate part other than the end of the slat will wind it well on the take-up shaft, reducing the frictional noise during opening and closing and scratching on the slat In addition, the storage space for the shutter curtain can be reduced.
[0005]
Preferably, an inclined surface inclined in the width direction of the slat is formed between the flat surface and the curved surface. And by doing in this way, the smoke-proof sheet | seat provided in the magsa part above an opening part will contact | abut without a gap over the length direction of the main body surface of a slat, and smoke-proof performance is improved. Further, the flat surface of the slat is formed by press working. However, if the inclined surface is provided, the quality is stabilized without any breaks or cracks due to the elongation of the material at the time of manufacturing the slat.
[0006]
Further, the present invention provides an architectural shutter configured to open and close the opening by guiding both ends of a shutter curtain formed by connecting a plurality of slats up and down to a guide rail provided in a building opening. The main body portion of each slat has inner and outer surfaces that become the inner and outer sides when wound around the winding shaft, is hollow and formed in a curved shape along the winding shaft , and both end portions of the main body portion The outer surface located at the position is formed by crushing at least a plane having a length corresponding to the amount of insertion into the guide rail, and the upper and lower ends of the planes of the slats abut each other when the shutter curtain is fully closed. As described above , at both ends of the shutter curtain, substantially the same plane along the guide surface of the guide rail is formed over a range facing the guide surface . By doing so, in addition to the effect of the first aspect, the weight of the shutter curtain used in the conventional smoke-proof shutter can be reduced.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an architectural shutter according to the present invention, FIG. 2 is a longitudinal sectional view of an essential part, and in the drawing, 1 is a shutter curtain constructed by connecting metal slats 2 up and down. The upper end of the curtain 1 is mounted on a winding shaft 4 installed via a pair of left and right brackets 3 and 3 positioned above the opening, and is erected on the left and right of the opening by forward and reverse rotation of the winding shaft 4. While being guided by the guide rail 5, the shutter curtain 1 is unwound and wound to open and close the opening. Reference numeral 6 denotes an opening / closing machine that applies a rotational force to the winding shaft 4 via the transmission mechanism 7. Reference numeral 8 denotes a smoke-proof sheet provided in the mass portion 9 and covers the gap between the shutter curtain 1 and the mass portion 9 when the shutter curtain 1 is closed.
[0008]
3 is a perspective view of the slat 2 constituting the shutter curtain 1 of the present invention, FIG. 4A is a cross-sectional view (cross-sectional view taken along the line AA in FIG. 3), and FIG. ) Is a cross-sectional view at the end of the slat 2 (a cross-sectional view along BB in FIG. 3), and FIG. 5 is a cross-sectional view along CC in FIG. The slat 2 is manufactured by roll forming an iron steel plate having a thickness of about 0.5 mm, and has a main body 21 formed in a hollow shape. The main body portion 21 is provided with an inner side surface 21a that is on the inner side when wound around the winding shaft 4 and an outer side surface 21b that is on the outer side when wound on the winding shaft 4. The upper part and the lower part of 21a and the outer surface 21b are connected to each other to form a hollow shape (hollow shape). An upper connecting portion 22 is formed from the upper end of the main body portion 21, and a lower connecting portion 23 is formed from the lower end of the main body portion 21. The upper connecting portion 22 rises upward from the upper end of the main body portion 21 and is formed in a folded shape on the inner side surface 21a side. Further, the lower connecting portion 23 extends downward from the lower end of the main body portion 21 and is formed in a hook shape toward the upper side on the outer side surface 21b. Then, the lower connecting piece 23 and the upper connecting piece 22 of the slat 2 positioned at the upper side are connected, and the lower connecting piece 23 and the upper connecting piece 22 of the slat 2 positioned at the lower side are connected in order, thereby opening the opening. A shutter curtain 1 to be closed is configured. In addition, a hollow-like extension 24 that is suspended from the main body 21 is formed at a position facing the lower connecting piece 23, and when the shutter curtain 1 is fully closed, the extension 24 is located below the main body in the slat 2. It is comprised so that it may contact | abut on the upper end of the part 21 (refer Fig.6 (a) or FIG. 7).
[0009]
As shown in FIG. 4A, the body portion 21 is formed in a curved shape at the intermediate portion in the longitudinal direction of the slat 2. When the shutter curtain 1 is wound around the take-up shaft 4, the inner side surface 21a which is the inner side is formed in an arc shape having substantially the same diameter as the outer diameter of the take-up shaft 4, and the outer side surface 21b is the inner side surface 21a. It is formed in a slightly gentler arc shape (curved surface Q) than that, and the main body portion 21 has a curved shape with the winding shaft 4 side on the inside. On the other hand, as shown in FIG. 4 (b), unlike the cross-sectional shape of the intermediate portion of the slat 2, both end portions in the length direction of the slat 2 are crushed and the plane P is formed. The other portions are formed in the same shape as the cross section in the intermediate portion of the slat 2. As shown in FIG. 5, the range in which the outer surface 21b is formed in a flat shape requires at least a length L1 corresponding to the amount of squeezing of the guide rail from the end of the slat 2, and further when the shutter curtain 1 is offset. That is, it is preferable to set the length L3 (L3 = L1 + L2 + α) so that the flat surface slightly protrudes from the guide rail even when the end portion of the slat 2 is in contact with the bottom portion 5a of the guide rail 5. Further, as shown in FIG. 2, an inclined surface R is formed on the outer surface 21b between the end portion and the intermediate portion of the slat 2 so as to extend from the plane P of the end portion of the slat 2 to the curved surface Q of the slat intermediate portion. The inclined surface R is preferably as gentle as possible.
[0010]
When the shutter curtain 1 with the slats 2 configured as described above connected in the up-and-down direction is closed, the shutter curtain 1 is unwound from the take-up shaft 4 and after passing through the mass portion 9, and then the guard curtain 5 provided at the opening has both ends. Descent while guiding the part. When the lowermost slat 2 comes in contact with the floor surface, the slats 2 and 2 are sequentially stacked on the lower slat to close the opening. When the shutter curtain 1 is fully closed, the extension 24 of the main body 21 of each slat 2, 2 comes into contact with the upper end of the main body 21 in the lower slat. The outer side surfaces 21b are connected to each other in the vertical direction.
[0011]
Further, as shown in FIG. 6A, both ends of the shutter curtain 1 are connected to the upper and lower planes P and P formed on the outer surfaces 21b of the slats 2 and 2, respectively, and as shown in FIG. Since the end portion of the curtain 1 forms a plane H over the amount swallowed by the guide rail 5, the end portion of the shutter curtain 1 has a substantially identical plane H that is parallel to the guide surface 5b of the guide rail 5 and the guide surface 5b. And the end of the shutter curtain 1 are formed over a range of facing each other. For this reason, the clearance gap between the shutter curtain 1 and the guide rail 5 can be made small, and the smoke-proof performance required for a smoke-proof shutter can be exhibited.
[0012]
Further, when the shutter curtain 1 is fully closed, as shown in FIG. 2, the gap between the shutter curtain 1 and the mass portion 9 is formed such that the rectangular smoke-proof sheet 8 suspended from the mass portion 9 protrudes from the outer surface 21 b of the slat 2. The outer surface 21b of each slat 2, 2 constituting the present invention has an inclined surface R formed between the plane P and the curved surface Q, and the smoke-proof sheet 8 is Since the slat 2 can be brought into contact with the entire length in the longitudinal direction, the gap between the mass portion 8 and the shutter curtain 1 can be satisfactorily covered even if the surface shape differs depending on the position in the longitudinal direction as in the slat 2 according to the present invention. it can. In the case where there is a step between the plane P and the curved surface Q as shown in FIG. 8B, even if covered with the smoke-proof sheet 8, a gap S2 is generated in that portion, which may reduce the smoke-proof performance. . Further, when the plane P is processed as shown in FIG. 8B, the material is suddenly deformed at that portion, and when the plate thickness of the slat 2 is thin as in this embodiment, there is a break or crack. Although it may occur, the above-mentioned problems do not occur by providing the inclined surface R so that the material is not rapidly deformed as in the present invention, which is preferable in terms of quality control.
[0013]
Next, when the shutter curtain 1 is opened from the fully closed state, the slats 2 constituting the shutter curtain 1 are wound around the winding shaft 4 sequentially. As shown in FIG. 9 (a), the first winding is wound along the circular winding shaft 4, and then the second winding of each slat 2, 2 wound on the first winding. The outer surface 21b of the main body of the slat 2 according to the present invention is formed with a curved surface Q, and the outer surface 21b of the slat 2 wound around the first winding is wound up. Since it is substantially concentric with the shaft 4, it can be wound up well even in the second volume. Similarly, since the outer surface 21b of each slat 2 and 2 of the second volume of the third volume is substantially concentric, the shutter curtain 1 as a whole is neatly wound around the winding shaft 4, and the shutter curtain Friction noise generated when the 1 is opened and closed and damage to the slats 2 are reduced. Further, even in the case of the hollow slat 2 as in the present embodiment, the inner surface 21a of the slat 2 is formed in a curved shape, and the main body portion 21 is formed in a curved shape along the winding of the winding shaft. Therefore, it is wound around the winding shaft 4 well. In addition, the outer side surface 21b (curved surface Q) in the middle part of each slat 2, 2 protrudes from the outer side surface 21b (plane P) of the both ends of each slat 2, 2, and is large in the length direction of the slat 2. Since it occupies a portion, the plane P at the end of the slat 2 does not affect the winding of the shutter curtain 1 around the winding shaft 4.
[0014]
If a flat slat is used as shown in FIG. 9 (b), other slats ride on the corners and projections of the slat and the winding collapses. Not only did it need to be large, but the corners and projections of other slats were in contact with the flat surface of the slats, and the slats were easily scratched, and frictional noises were also likely to occur during opening and closing.
[0015]
In FIG. 10, reference numeral 10 denotes a wind-resistant hook that is fixed to the end portion of the slat 2 and prevents the slat 2 from coming out of the guide rail 5. The wind-resistant hook 10 is fixed to the base end surface 101 a fixed to the slat 2 with screws or the like. A main body 101 having a U-shaped cross section is formed by an upper piece 101b and a lower piece 101c extending in the vertical direction from the upper and lower ends of the end surface 101a. A locking portion 102 is formed from the end of the main body portion 101 so as to protrude in an oblique direction opposite to the upper piece 101b and the lower piece 101c. When the shutter curtain 1 is bent due to wind pressure or the like, a guide is provided. The locking portion 102 is prevented from being pulled out of the guide rail 5 by being hooked on the locked surface 5 c provided on the rail 5. The base end surface 101a is formed in a shape along the inner periphery of the outer surface 21b of the slat 2 (in the present embodiment, the outer surface 21b at the end of the slat 2 is flat, so that it is a flat surface). The piece 101c is set to such a length that its tip abuts against the upper and lower portions of the inner side surface 21a of the slat 2. Further, the U-shaped main body 101 has substantially the same length as the amount of slat 2 swallowed into the guide rail 5, and when it is attached to the end of the slat 2 and fitted into the guide rail 5, FIG. As shown in (a), the guide rail 5 is set so as to be substantially flush with the front end surface 5d. When the shutter curtain 1 is bent by the wind pressure, the front end of the main body 101 of the wind-resistant hook 10 comes out from the front end surface 5d of the guide rail 5.
[0016]
When the shutter curtain 1 is bent in the direction of the outer surface 21b of the slat 2 as shown in FIG. 11 (b), the tip side corner 5e of the guide surface 5b of the guide rail 5 and the outer surface 21b of the slat 2 are in contact with each other. The base end surface 101a of the wind-resistant hook 10 is attached to the outer surface 21b along the inner surface, and the tip of the main body 101 of the wind-resistant hook 10 protrudes from the tip surface 5d of the guide rail 5. The contact portion is reinforced to prevent the outer surface 21b from being deformed. As shown in FIG. 11C, when the shutter curtain 1 is bent in the direction of the inner surface 21a of the slat 2, the front end side corner portion 5f of the guide surface 5b of the guide rail 5 and the inner surface 21a of the slat 2. However, the tips of the upper piece 101 b and the lower piece 101 c of the wind-resistant hook 10 reach the upper and lower portions of the inner side surface 21 a, and the tip of the main body 101 of the wind-resistant hook 10 is the guide rail 5. Since it protrudes from the front end surface 5d, it functions to reinforce the contact portion, and similarly prevents the inner side surface 21a from being deformed. When the plate thickness of the slat 2 is thin as in the present embodiment, the slat 2 is easily deformed by contact with the guide rail 5, but by using the wind-resistant hook 10, the slat 2 is prevented from coming off the shutter curtain 1. The end of the can be reinforced.
[0017]
The present invention is configured as described above. When the shutter curtain 1 is fully closed, substantially the same plane H is formed at both ends corresponding to the amount of squeezing of the guide rail 5, so that the guide surface 5b of the guide rail 5 and Further, when the shutter curtain 1 is wound around the winding shaft 4, it can be satisfactorily wound around the winding shaft 4 by the curved surface Q provided at the intermediate portion other than the end portion of the slat 2. Will be. Therefore, although it is a shutter curtain 1 using one kind of slat 2, it has both the smoke-shielding property of the guide rail 5 and the adaptability at the time of winding on the winding shaft 4, and can be adapted to a smoke-proof shutter. However, it is possible to reduce the frictional noise at the time of opening and closing and damage to the slats 2 and to reduce the storage space for the shutter curtain.
Further, since the inclined surface R is formed between the flat surface P and the curved surface Q of the slat 2, the smoke-proof sheet 8 provided on the magsa portion 9 above the opening portion extends in the length direction on the outer surface 21b of the slat 2. It will contact | abut without a space | interval over, and smoke-proof performance improves. Further, when the slanted surface R is provided at the time of manufacturing the slat, the quality is stabilized without any breaks or cracks due to the elongation of the material at the time of manufacture.
[0018]
Furthermore, by making the slats 2 constituting the shutter curtain 1 of the present invention hollow, the weight of the shutter curtain 1 can be reduced, and the peripheral members such as the winding shaft 4, the bracket 3, and the opening / closing machine 6 are also light and thin. It can be shortened, and production costs and construction costs can be reduced.
[0019]
In this embodiment, the shutter curtain 1 is constructed using the hollow slats 2, but this is not always necessary, and the invention of claim 1 or 2 uses a steel plate of 1.5 mm or more as shown in FIG. However, it goes without saying that the present invention can be implemented. Further, the middle portion in the length direction of the slat 2 is formed in a curved shape (curved surface Q), but the present invention is not limited to this, and for example, as shown in FIG. Any shape may be used as long as the shape becomes. Also in this case, both end portions of the slat 2 have a planar shape as shown by dotted lines in the figure.
[Brief description of the drawings]
1 is a front view of an architectural shutter. FIG. 2 is a longitudinal sectional view of the main part. FIG. 3 is a perspective view of a slat. FIG. 4 (a) is a sectional view taken along line AA in FIG. -B cross-sectional view [Fig. 5] CC cross-sectional view of Fig. 3 [Fig. 6] (a) Diagram showing engagement between shutter curtain and guide rail (b) Diagram showing engagement between curved shutter curtain and guide rail [ FIG. 7 is a perspective view of a shutter curtain. FIG. 8A is a view showing a close contact state between a slat and a smokeproof sheet. FIG. 7B is a view showing a close contact state between a slat having a step and a smokeproof sheet. FIG. 10B is a view showing the winding state of the shutter curtain of the present invention. FIG. 10B is a view showing the winding state of the flat slat. FIG. The figure which shows the fitting state to the guide rail of the slat which attached the hook (b) Slat FIG. 12 (c) is a view showing a state in which the slat is bent toward the inner side. FIG. 12 (a) is a perspective view of the slat in another embodiment. FIG. -A cross-sectional view (c) BB cross-sectional view of FIG. 11 (d) Cross-sectional view of a slat in another embodiment
DESCRIPTION OF SYMBOLS 1 Shutter curtain 2 Slat 21 Main-body part 21a Inner side surface 21b Outer side surface 22 Upper connection part 23 Lower connection part 24 Extension part 3 Bracket 4 Winding shaft 5 Guide rail 5a Bottom part 5b Guide surface 5c Locked surface 5d Tip surface 5e Corner | angular part 5f Corner portion 6 Opening and closing machine 7 Transmission mechanism 8 Smokeproof sheet 9 Maza portion 10 Windproof hook 101 Main body portion 101a Base end surface 101b Upper piece 101c Lower piece 102 Locking portion P Plane Q Curved surface R Inclined surface

Claims (3)

In a building shutter configured to open and close the opening by guiding both ends of a shutter curtain formed by connecting a plurality of slats up and down to a guide rail provided in a building opening , the main body of each slat A flat surface having a length corresponding to at least the amount of insertion into the guide rails is crushed at both ends of the slats, and the upper and lower ends of the flat surfaces of the slats abut each other when the shutter curtain is fully closed. to one, the longitudinal intermediate portion of the main body portion of the slat to form a curved surface protruding in the width direction than the plane, at both ends of the shutter curtain substantially the same plane along the guide surface of the guide rail A shutter curtain structure for an architectural shutter, characterized in that the shutter curtain structure is formed over a range facing the guide surface . 2. The shutter curtain structure for an architectural shutter according to claim 1, wherein an inclined surface inclined in the width direction of the slat is formed between the flat surface and the curved surface. In a building shutter configured to open and close the opening by guiding both ends of a shutter curtain formed by connecting a plurality of slats up and down to a guide rail provided in a building opening, the main body of each slat Has inner and outer surfaces that become the inner and outer sides when wound on the winding shaft, is hollow and formed in a curved shape along the winding shaft , and is positioned on both ends of the main body. Is formed by crushing at least a plane having a length corresponding to the amount of insertion into the guide rail, and when the shutter curtain is fully closed, the upper and lower ends of the plane of each slat are in contact with each other . architectural shutter substantially the same plane at both ends along the guide surface of the guide rail, characterized in that it has to be formed over a range that faces the guiding surface shut Over curtain structure.

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