JP2015081421A - Sheet shutter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a shutter curtain lower end part from slipping out of a guide rail, when a stong wind blows through a narrowed opening part in closing operation, in a sheet shutter device for disconnecting a shutter curtain from the guide rail, when a claw of a forklift touches.SOLUTION: A regulation member 12 for regulating a locking body 1b so as not to slip out by expansively opening a guide member 7, is provided in a lower area of the guide member 7 for engageably-disengageably locking the locking body 1b provided on the guide rail and provided in the shutter curtain.

Description

  The present invention relates to a technical field of a sheet shutter device built in an opening of a building.

  In general, this type of sheet shutter device is configured such that the left and right ends of a sheet-like shutter curtain are assembled to guide rails provided at the left and right ends of the housing opening so as to be movable in the vertical direction. When the forklift pawl comes into contact, the pawl may break through the shutter curtain under the load when the forklift comes into contact. Therefore, a guide rail is provided on the rail body attached to the housing side, and a guide which is provided on the rail body so as to be swingable in the front-rear direction, and a locking body provided on both left and right ends of the shutter curtain is vertically movable. In this case, when the guide member is formed of a C-shaped resin material that can be elastically deformed and the load is applied to the shutter curtain as described above, the guide member The first load avoidance operation that avoids the load by swinging in the front-rear direction, the second load avoidance that the guide member moves inward in the left-right direction against the urging force of the ammunition When the load is such a large load that cannot be avoided by these first and second load avoiding operations, the guide member expands and the locking body comes off the guide member to avoid the load. Perform the load avoidance operation. Those so as to prevent from degradation, such as the shutter curtain will be torn has been proposed by (for example, see Patent Documents 1 and 2).

JP 2008-7973 A JP 2012-246692 A

  By the way, in the opening where such a sheet shutter device is built, there may be an environment where strong wind blows through, and in such an environment, the shutter curtain is closed to gradually reduce the opening area of the opening. The speed of the wind that blows through the opening increases as the opening area decreases. The locking body at the lower end of the shutter curtain may come off from the guide member due to the load at this time, but the shutter curtain was closed when it was released by such a strong wind load. Sometimes part (left and right ends of the shutter curtain) is open and cannot be closed Becomes disadvantageously Mau, there are problems to be solved of the present invention herein.

The present invention has been made in view of the above circumstances and has been created for the purpose of solving these problems. The invention of claim 1 is directed to a flexible sheet-like shutter curtain and the shutter. A winding drum around which the curtain is wound, an opening / closing device that rotates the winding drum forward and backward to open and close the shutter curtain, and guide rails that guide the lifting and lowering of the left and right ends of the shutter curtain. In the sheet shutter device comprising the guide rail, the guide member for locking the locking body provided at the left and right edges of the shutter curtain in a retaining shape and guiding the locking body up and down to the guide rail, When the shutter curtain is configured to expand when the load exceeds a preset level, and the locking body comes out, the shutter curtain that is operating in the closed state is not fully closed. A sheet shutter, characterized in that a regulating member is provided in the front lower area to regulate the guide member from expanding and the locking body from coming out of the guide member by a load received by the lower end of the shutter curtain. Device.
According to a second aspect of the present invention, the guide member biases the guide member outward in the left-right direction and the first load avoiding operation of swinging in the front-rear direction when the shutter curtain receives a load. A second load avoiding operation that moves inward in the left-right direction against the urging force of the ammunition, and a third load avoiding operation that expands and the locking body comes out. The sheet shutter device according to claim 1, wherein the first and second load avoiding operations are allowed and the third load avoiding operation is restricted.
The invention according to claim 3 is the sheet shutter device according to claim 1 or 2, wherein the restricting member restricts the locking body so as not to come out of the guide member.
According to a fourth aspect of the present invention, the restricting member restricts the locking member from coming out even in the upper region following the lower region. The guide member expands when it receives a load larger than the preset load when the locking body comes out when it is in the second load avoidance operation state that has moved in the direction and is not subject to the withdrawal restriction by the restriction member The sheet shutter device according to claim 2, wherein the locking body is set so as to come out.
The invention according to claim 5 is the sheet shutter device according to claim 4, wherein the load on the regulating member when the locking body comes out in the upper region is set so as to increase toward the lower side.
According to the sixth aspect of the present invention, the restriction in the lower region of the restricting member is controlled by the restricting member in the second load avoidance operation state in which the guide member moves inward in the left-right direction against the bullet. The load is set up to a preset load larger than the load when the locking body comes out when there is not, but when the load exceeding this is applied, the guide member is expanded and the locking body comes out The sheet shutter device according to claim 2, wherein the sheet shutter device is provided.

According to the first aspect of the present invention, when the forklift claw hits the fully closed shutter curtain and receives a load, the guide member expands and the locking body comes out to guide the shutter curtain. Although it is possible to avoid the shutter curtain from being broken off from the rail, the guide member is expanded by the restricting member in the lower area before the shutter curtain that is closed is fully closed, and the locking body is prevented from coming out. Therefore, it is possible to prevent the shutter curtain from being inadvertently detached from the guide rail by being exposed to a strong wind immediately before being fully closed.
According to the second aspect of the present invention, the restraining prevention of the locking body that is executed in the lower region of the shutter curtain that is operating in a closed state is limited in the left-right direction against the swinging movement of the guide member and the elastic machine. As a result of being performed after receiving the first and second load avoiding operations that move in the direction, the load avoidance when receiving the strong wind of the shutter curtain is virtually guaranteed.
By setting it as invention of Claim 3, when a shutter curtain receives a strong wind, it does not remove | deviate from a guide rail carelessly.
According to the invention of claim 4, when the shutter curtain is closed, when the shutter curtain receives a large load in the upper region of the lower region where the shutter curtain is subjected to the restriction of coming off from the guide rail, It can be avoided that the shutter curtain is inadvertently detached when it receives a strong wind while ensuring that it is detached.
According to the fifth aspect of the present invention, in the upper region, it is possible to regulate the omission in response to the fact that the wind passing through the opening that becomes narrower as the shutter curtain is closed and becomes stronger. Curtain removal control can be performed corresponding to the opening area.
According to the sixth aspect of the present invention, when the shutter curtain receives strong wind in the lower region before the shutter curtain is fully closed, the shutter curtain can be set to be detached from the guide rail before the breakage. The curtain can be protected.

It is a front view of a sheet shutter device. It is an outer side view of a sheet shutter device. It is an inner side view of a guide rail. It is a front view of a guide rail. It is a longitudinal cross-sectional view of a guide rail. (A) is a cross-sectional view of the second guide member, (B) is a cross-sectional view of the guide rail showing the swinging state of the guide member, and (C) is a state in which the guide member is moved inward in the left-right direction. FIG. 4D is a cross-sectional view of the guide rail shown, and FIG. 4D is a cross-sectional view of the lower region of the guide rail. (A), (B), and (C) are a side view, a front view, and a plan view of the regulating body, and (D) is a plan view and a front view of the closing body. It is an inner side view of the guide rail of 2nd embodiment. It is a front view of the guide rail. It is a longitudinal cross-sectional view of the guide rail. (A) is a cross-sectional view of the guide rail in the upper region, (B) is a cross-sectional view of the guide rail in the intermediate region, (C) is a cross-sectional view of the guide rail in the lower region, and (D) is the first It is a cross-sectional view of the guide rail of the two guide member part. (A), (B), and (C) are a front view, a side view, and a plan view of a regulating member according to the second embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a sheet-like shutter curtain constituting a sheet shutter device. The shutter curtain 1 is made of a flexible sheet material, and is a shutter provided at an upper portion of an opening formed in a housing. The winder drum 3 is wound around a winder drum 3 that is rotatably mounted in the case 2, and the winder drum 3 is linked to a switch 5 via a chain transmission mechanism 4. The shutter curtain 1 changes into an opening posture in which the opening is fully opened and a closing posture in which the opening is fully closed in accordance with forward / reverse driving of the opening / closing device 5 to open and close the opening. The parts are guided to move up and down by guide rails 6 provided at the left and right ends of the opening, respectively, and these basic configurations are all conventional.

Auxiliary sheets 1a are integrally provided at both left and right end portions of the shutter curtain 1, and a plurality of locking bodies (locking pieces) 1b are provided at predetermined intervals in the vertical direction on the outer edge in the horizontal direction of the auxiliary sheet 1a. However, as will be described later, the locking body 1b is fitted and locked to a guide member 7 provided on the guide rail 6 in a retaining shape so as to receive the vertical movement guide. ing.
The lower end portion of the shutter curtain 1 is a bag-like portion 1c, and a bottom weight is provided in the bag-like portion 1c so that the shutter curtain 1 can be smoothly opened and closed.

The guide member 7 is formed of an elastically deformable resin material and is formed of a long object extending from the floor surface to the lower end portion of the shutter case 2, and the guide member 7 is open on the inner side in the left-right direction. A guide piece 7a having a C shape (a dovetail shape) in which the locking body 1b is locked in a retaining shape, and provided on the outer side in the left-right direction with respect to the guide piece 7a. And a bolt support piece 7b formed to be wide in the direction. A screw portion 8b of a bolt 8 having a head portion 8a supported in a retaining shape on the bolt support piece 7b protrudes outward in the left-right direction.
On the other hand, the guide rail 6 includes a rail main body 6a attached to the housing side. The rail main body 6a is provided with a partition plate 6b that partitions the guide rail 6 in the left and right directions. The screw portion 8b passes through the through-hole 6c drilled at an appropriate interval in the direction, and the nut 8c is screwed to the penetrating tip portion (outer end portion) between the nut 8c and the partition plate 6b. An ammunition 9 is interposed between the two. Reference numeral 6d denotes a closing sheet for closing the inner opening of the rail body 6a.

  The guide member 7 swings in the front-rear direction while resisting the urging force of the ammunition 9 when a load in the front-rear direction is applied, such as when the forklift claw contacts the shutter curtain 1. The first load avoiding operation for avoiding the load (see FIG. 6B), the guide member 7 moves inward in the left-right direction against the urging force of the ammunition 9 and avoids the load. Load avoiding operation (see FIG. 6 (C)), but when the load is a large load that cannot be absorbed by the first and second load avoiding operations, the guide piece 7a is expanded and locked. The body 1b is configured to perform a third load avoiding operation (see FIG. 6C) in which the body 1b is pulled out from the guide piece 7a, thereby causing a problem that the shutter curtain 1 is torn when receiving a large load. It can be avoided.

Further, a second guide member 10 is provided between the upper end portion of the guide member 7 and the lower end surface of the shutter case 2, and the upper and lower end portions of the second guide member 10 are expanded in a trumpet shape. The upper and lower guide portions 10a and 10b projecting inward in the left-right direction are provided, and the upper guide portion 10a of the upper and lower guide portions 10a and 10b is provided with a locking body 1b fed out from the winding drum 3 when the shutter curtain 1 is closed. It is configured to guide the locking body 1b to the lower guide member 7 by swallowing, and the lower guide portion 10b is used when the locking body 1b is pulled out (disengaged) from the guide member 7 as described above. The latching body 1b that has come out is swallowed in the process of opening the shutter curtain 1, and is guided and guided to a normal moving position.
In the present embodiment, the rail body 6a is reinforced by the reinforcing plate 11 provided at the lower end portion of the shutter case 2 up to the second bolt 8 up to the second upper side. It is reinforced and fixed by individual reinforcing plates 11a.

12 is a restricting member that restricts the expansion of the guide piece 7a of the guide member 7, and the restricting member 12 of the present embodiment is a state in which the tip of the claw is lifted from the floor surface when the forklift travels. However, the first load avoiding operation that is swinging in the front-rear direction with respect to the guide member 7 in the lower region that is lower than the lifting height (for example, a height of 100 mm to 400 mm from the floor surface). The second load avoiding operation in which the guide member 7 moves inward in the left-right direction against the urging force of the ammunition 9 is allowed to be performed together with the regulating member 12, but the guide piece 7a is expanded. The third load avoiding operation is performed such that the locking body 1b is opened and the locking body 1b is detached from the guide piece 7a.
In other words, in the present embodiment, the regulating member 12 has a U-shape, the regulation body 12a provided so as to be fitted and incorporated in the state where the inner side in the left-right direction is expanded, and the front and rear of the guide piece 7a. It is configured using a closing body 12b that closes the gap between the outer surfaces in the direction and the restriction body 12a, and a screw 12c that is a fixing member for fixing the restriction body 12a and the closing body 12b.
As for the guide member 7 in the lower region, when a load is applied to the shutter curtain 1 corresponding to the corresponding height, the guide member 7 swings in the front-rear direction together with the regulating member 12. The load avoidance operation and the second load avoidance operation in which the guide member 7 moves inward in the left-right direction against the urging force of the ammunition 9 are performed. Since the third load avoiding operation to be pulled out is regulated by the regulating member 12 including the regulating main body 12a and the closing body 12b, the locking body 1b is configured not to come out from the guide member 7.

In the present embodiment configured as described above, when the shutter curtain 1 is subjected to a load such as a nail of a forklift at a position higher than the lower region in the closed posture, the shutter curtain 1 first has a neck in the front-rear direction. The first avoidance operation, which is swinging and swinging, and the second avoidance operation, in which the guide member 7 moves inward in the left-right direction against the biasing force of the ammunition 9, avoids the load. When the received load is so large that it cannot be absorbed by these avoiding operations, the guide piece 7a expands and the locking body 1b comes out of the guide piece 7a, thereby damaging the shutter curtain 1. Such problems can be avoided.
Then, the locking body 1b that has come out of the guide member 7 is swallowed by the lower guide portion 10b of the second guide member 10 in the process of opening the shutter curtain 1, and is guided to the normal movement position. When the shutter curtain is closed, the guide member 7 guides the shutter curtain.

  As described above, when a large load is applied to the shutter curtain 1 in the closed posture, it is possible to avoid a problem in which the shutter curtain 1 is broken because the locking body 1b comes out of the guide member 7. As the shutter curtain 1 is closed in the closing operation, the opening area of the opening becomes smaller. However, when the shutter curtain 1 is exposed to strong wind at this time, the stronger the wind blows through the opening as the opening becomes narrower. Thus, this strong wind becomes stronger when it is fully closed, hits the lower part of the shutter curtain 1, and the load is such that the locking body 1b comes out of the guide member 7, but the present invention is implemented. In the case where the guide member 7 in the lower region is provided with the restricting member 12, the guide member 7 is expanded and engaged. Body 1b is never exit from the guide member 7.

That is, in this case, when the shutter curtain 1 is fully closed during the closing operation and the lower part of the shutter curtain 1 is exposed to a strong wind and receives a large load, the guide member 7 moves forward and backward together with the regulating member 12. The load avoidance is achieved by performing a first load avoiding operation that swings in a direction and a second load avoiding operation that moves inward in the left-right direction against the urging force of the ammunition 9. In the case of such a large load, the guide member 7 is restricted from expanding the guide piece 7 a by the restriction member 12, and the locking body 1 b does not come out of the guide member 7.
As a result, the shutter curtain 1 is inadvertently pulled out of the guide body 7 from the lower locking body 1b even if a strong wind blows through the opening when the shutter curtain 1 is fully closed and a large load is applied. Therefore, it is surely fully closed while being guided by the guide rail 6.

Of course, the present invention is not limited to the above-described embodiment, and may be the second embodiment shown in the drawings of FIGS.
The guide member 13 provided on the guide rail 6 is such that the width of the guide piece 13a in the front-rear direction is the same as the width of the bolt support piece 13b. The restricting member 14 is provided so that the front and rear plates 14a come into contact with the front and rear guide pieces 13a of the guide member 13. The restricting member 14 swings the guide member 13 in the front-rear direction. The first load avoidance operation is allowed, but the guide member 13 remains without moving together with the guide member 13 when the guide member 13 moves inward in the left-right direction against the biasing force of the ammunition 9. The restricting member 14 has an inclined edge 14b that protrudes toward the lower side until the front end edge of the front and rear plates 14a reaches the lower region that is the position before full closure, and the vertical end surface 14c that protrudes most in the lower region. Na To have. Then, in a stage before the guide member 13 moves from the state where it does not move inward in the left-right direction to the lower region, as shown in FIGS. 11A and 11B, when the guide member 13 moves inward in the left-right direction, When the inner end edge 13c of the member 13 protrudes more than the regulating member inclined end edge 14b and thereby receives a larger load than when not regulated by the regulating member 14, the guide piece 13a expands and the locking body 1b. However, when the guide body 13 reaches the lower region, the inner end edge portion 13c of the guide body 13 does not exceed the vertical end edge 14c of the regulating member 14 (see FIG. 11C). This restricts the guide body 13 from expanding and the locking portion 1b from coming out.
Note that the second guide member 15 provided on the upper side of the guide body 13 and for guiding the detached locking body 1b to the original position is provided in the left-right direction of the regulating member 16 as shown in FIG. The second guide body 15 is bent so that the end edge 16 a abuts against the inner end edge 15 a of the second guide member 15 and the second guide body 15 does not protrude from the regulating member 16.

  In the second embodiment, when the shutter curtain 1 is closing the intermediate region, the opening is reduced in area as the shutter curtain 1 is closed. The wind that blows through becomes stronger gradually, but the locking of the locking body 1b from the guide member 13 corresponding to such a change in the strength of the wind is regulated.

Furthermore, in the present invention, when the locking member 1b is prevented from being pulled out in the intermediate region, in the second embodiment, the regulating member 14 is connected to the protruding end edge 14b of the front and rear plates 14a above the lower region. Although all of them are inclined, for example, the upper end region is not moved in the left-right direction as shown in FIG. 11A, and the inner end edge portion 13c of the guide member 13 and the protruding end edge 14b of the regulating member 14 May be ensured as being substantially flush with each other, or the inner end edge 14c of the regulating member 14 may be projected in a stepped manner.
Furthermore, in both the above-described embodiments, in the lower region up to the position before the shutter curtain is fully closed, the locking member is completely pulled out from the guide member, but the configuration is not limited thereto. When the load of a certain size or more is applied, for example, the guide member moves inward in the left-right direction against the ammunition and is regulated so that the locking body comes out of the guide member. Locking out of the locking body is controlled up to a preset load that is larger than the load when the locking body is pulled out when it is not subject to pulling out by the member. May expand so that the locking body comes out.

  The present invention can be used in the field of a sheet shutter device capable of opening and closing a building opening at high speed.

DESCRIPTION OF SYMBOLS 1 Shutter curtain 1b Locking body 6 Guide rail 7 Guide member 7a Guide piece 9 Bullet machine 12 Restriction member 12a Restriction body

Claims (6)

  A sheet-like shutter curtain having flexibility, a winding drum around which the shutter curtain is wound, an opening / closing device that opens and closes the shutter curtain by rotating the winding drum forward and backward, and In a sheet shutter device configured to include guide rails that guide the raising and lowering of the left and right ends of the shutter curtain, a locking body provided at the left and right edges of the shutter curtain is locked to the guide rail in a retaining shape. The guide member for raising and lowering the locking body is closed when it is configured to expand and the locking body comes out when a load exceeding a preset value is applied to the shutter curtain. The guide member expands in the lower area before the shutter curtain is fully closed by the load received by the lower end of the shutter curtain, and the locking body comes out of the guide member. Sheet shutter apparatus characterized by is provided regulating member for regulating.   The guide member resists the first load avoidance operation that swings in the front-rear direction when the shutter curtain receives a load, and the biasing force of the bomb that urges the guide member outward in the left-right direction. Then, a second load avoiding operation that moves inward in the left-right direction and a third load avoiding operation that expands and the locking body comes out are performed. 2. The sheet shutter device according to claim 1, wherein the load avoiding operation is allowed and the third load avoiding operation is restricted.   3. The sheet shutter device according to claim 1, wherein the restricting member restricts the locking body so as not to come out of the guide member.   The restricting member restricts the locking body from coming out even in the upper region following the lower region. The restricting member in the upper region is a second member in which the guide member moves inward in the left-right direction against the ammunition. The guide member expands and the locking body comes out when a load larger than a preset load is applied when the locking body comes out when it is in the load avoidance operation state and is not subject to the restriction by the restriction member. The sheet shutter device according to claim 2, wherein the sheet shutter device is set as follows.   5. The sheet shutter device according to claim 4, wherein the load on the regulating member when the locking body comes out in the upper region is set so as to increase toward the lower side.   When the guide member is in the second load avoidance operation state in which the guide member has moved inward in the left-right direction against the ammunition and is not subject to the restriction by the restriction member, It is characterized in that it is set up so that the guide member is expanded and the locking body is pulled out when a load exceeding the preset load is applied, which is larger than the load at the time of withdrawal. The sheet shutter device according to claim 2.

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