JP2006266025A - Sheet shutter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To control a shutter curtain up to restoring a separated shutter curtain end part to guide rails, after the sheet-like shutter curtain end part separates from the guide rails. <P>SOLUTION: This sheet shutter device has a sheet-like shutter curtain 1 for opening and closing a building opening part, a pair of guide rails 2 for guiding both end parts of the shutter curtain 1, a shutter curtain end part separation detecting means for transmitting a separation detecting signal by detecting that at least one end part of the shutter curtain 1 separates from the guide rails 2, and a shutter curtain control means for stopping and/or lifting the shutter curtain 1 in an emergency by receiving the separation detecting signal. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a sheet shutter device, and more particularly to a sheet shutter device in which an end of a shutter curtain is detached from a guide rail when a predetermined load or more is applied to a sheet-like shutter curtain.

The sheet constituting the shutter curtain of the sheet shutter device is weaker than a shutter curtain made of steel slats, and if a force exceeding a predetermined level is applied to the sheet, the sheet may be damaged. Therefore, when a force greater than a predetermined force is applied to the seat, a configuration has been proposed in which the end portion of the seat is detached from the guide rail. 2.

Here, the technical idea of the conventional “sheet shutter in which the end portion of the seat can be detached from the guide rail” is “how to make the seat come off from the guide rail when a force is applied to the seat. "," How to return the detached seat to the guide rail ".

However, if the seat is lifted with one or both ends of the seat removed from the guide rail, the seat that has come off rises while moving wildly, and the seat or the guide rail may be damaged or damaged. . In particular, in a seat shutter device that has a sensor for detecting a passerby or a vehicle and that is controlled to raise the seat when the sensor detects a passerby or a vehicle, the seat is guided by wind pressure. In such a case, when the detached sheet is largely shaken back and forth by the wind, detection by the sensor is performed, and the separated sheet is automatically lifted while moving wildly.
JP2001-12174A Japanese Patent No. 2884103

The present invention was created based on an idea different from the conventional technical idea, and after the edge of the sheet-like shutter curtain is detached from the guide rail, the detached shutter curtain edge is used as the guide rail. The purpose is to control the shutter curtain until it is restored.

In order to achieve such a problem, the sheet shutter device adopted by the present invention includes a sheet-like shutter curtain that opens and closes a building opening, a pair of guide rails that guide both ends of the shutter curtain, and at least one of the shutter curtains. Shutter curtain end separation detecting means for detecting that the end portion has separated from the guide rail and transmitting a separation detection signal, and shutter curtain control means for receiving the separation detection signal and abnormally stopping or / and raising the shutter curtain And have.

In “abnormal stop of shutter curtain”, the movement of the shutter curtain is stopped when the shutter curtain is moved, or the movement of the shutter curtain is disabled after the stop, and the movement of the shutter curtain is impossible when the shutter curtain is stopped. Including. “Disabling the movement of the shutter curtain” means, for example, a state in which an open signal or a close signal cannot be input from the operation panel. In one aspect, when the shutter curtain is in an abnormally stopped state, an abnormal lamp is displayed on the operation panel so that the abnormally stopped state is released by inputting a release signal from a release button on the operation panel. . The shutter curtain control means may raise the shutter curtain after an abnormal stop or in response to reception of a separation detection signal. In addition, after receiving the separation detection signal, sensors such as sensors for detecting passers and vehicles are disabled until the detached shutter curtain returns to its original state. Therefore, even when the abnormal stop state is canceled by the release button, sensors such as sensors for detecting passers-by and passing vehicles are maintained in an incapable state. In one preferred embodiment, the returning means of the detached shutter curtain end is by the raising operation of the shutter curtain. In one aspect, the return means of the detached shutter curtain end raises the shutter curtain to the fully open position. In this case, when the shutter curtain reaches the fully open position, sensors such as sensors for detecting passers-by and passing vehicles are released from the disabled state, and these sensors become effective. In another aspect, the return means of the detached shutter curtain end is provided with guide means at an intermediate portion of the guide rail, and the shutter curtain end is returned into the guide rail by the guide means while the shutter curtain is raised. is there. In this case, as described below, the shutter curtain is raised at a lower speed than the normal rising speed, and after returning to the guide rail, the shutter curtain may be raised at the normal rising speed.

In a preferred embodiment, the shutter curtain control means raises the shutter curtain whose end is separated from the guide rail at a lower speed than the normal rising speed. In this way, even if the shutter curtain is lifted while the shutter curtain edge is detached from the guide rail, it is possible to minimize the violence of the part where the shutter curtain is detached, and damage to the shutter curtain and guide rail is possible. It can be prevented as much as possible.

In one embodiment, the shutter curtain end separation detecting means detects the separation of the shutter curtain in a non-contact manner. Examples of non-contact detection include those using light (including infrared rays), electromagnetic waves, magnetism, and the like. In the non-contact type detection means, in one aspect, at both ends of the shutter curtain, there are provided a plurality of locking members that are located in the guide rail and are guided by the guide rail at intervals in the vertical direction. The detecting means is provided at a detection member provided at the lowest locking member (preferably, a lower end portion of the locking member) and a lower end portion of the guide rail, and detects the detection member without contact. And a detection member. Examples of the combination of the detection member and the detected member include an optical sensor and a light reflection plate. Examples of the locking members provided at both ends of the shutter curtain include guide blocks described in Patent Document 1 and embodiments described later, or a rod disclosed in Patent Document 2. When the guide rail is movable (for example, it is movable in the opening width direction and can swing in the front-rear direction so as to follow the swelling of the shutter curtain), the shutter curtain end is also the guide rail. Therefore, the detection member provided at the lower end portion of the guide rail is preferably attached to the lower end portion of the guide rail so as to move together with the guide rail.

In another aspect, the shutter curtain end separation detecting means mechanically detects the separation of the shutter curtain by contact. The shutter curtain detachment detecting means has a contact member facing the shutter curtain end portion with a predetermined interval, and the shutter curtain end portion released from the guide rail contacts the contact member to mechanically detect the shutter curtain end portion. Detects separation of parts. In one aspect, the contact member is a member that can be deformed when the shutter curtain end comes into contact, and the separation of the shutter curtain end is determined by detecting the amount of deformation. As the deformable contact member, the contact member itself has elasticity, for example, when it is configured by a coil spring, or the contact member may be configured to be rotatable via a proximal end side. . The distance between the contact member and the shutter curtain end is set to such a dimension that the bulging shutter curtain does not contact the contact member when the shutter curtain bulges. In principle, the contact member is provided so as to face both the front and rear sides of the shutter curtain. However, in a special case where the shutter curtain end part is detached from the guide rail only, it may be provided only on one side. . It is desirable to provide a plurality of contact members at predetermined intervals in the opening height direction of the building opening.

In the present invention, it is detected that the shutter curtain end is detached from the guide rail, and the movement of the shutter curtain is controlled by a separation detection signal. Damage to the guide rail can be prevented as much as possible. Further, in the present invention, since the separation detection means detects the shutter curtain end, the separation detection means does not cause a false detection due to the passage of a normal building opening.

[A] Overall Configuration of Sheet Shutter The overall configuration of the sheet shutter according to the present invention will be described with reference to the drawings as appropriate. The sheet shutter device is a sheet-like shutter curtain 1 that opens and closes a building opening, and a pair of guide rails 2 that are erected at both ends of the building opening and that receive and guide both ends of the shutter curtain 1 in the width direction. And the upper end of the shutter curtain 1 are connected, a winding shaft 3 extending in the width direction of the opening (shutter curtain), and a shutter case disposed above the building opening and incorporating the winding shaft 3 4, a switch (not shown) that rotates the winding shaft 3, and a controller that controls the switch. The control unit has a control circuit, a command is transmitted to the motor of the switch via the control circuit in accordance with an input to the control unit, and the winding shaft 3 is rotated by the rotation of the motor, whereby the shutter curtain 1 Is wound around the take-up shaft 3 or fed out from the take-up shaft 3 to open and close the building opening. The seat shutter has a means for detecting a passerby or a passing vehicle, and normally opens and closes a building opening by an input from a means for detecting a passerby or a vehicle. The control unit further includes an operation panel (control panel), and can open and close the building opening by manual input from the operation panel.

The shutter curtain 1 includes a main body sheet 10, a plurality of guide blocks 5 provided at left and right ends in the width direction of the main body sheet 10 at intervals in the vertical direction, and an inner bag-like portion 11 formed at the lower end of the main body sheet 10. A posture holding bar 6 is provided which has an outer bag-like portion 12 and is located immediately above the inner bag-like portion 11 and extends in the width direction of the main body sheet 10. Inside the inner bag-shaped portion 11, a pair of left and right bottom weights 7 that are equally disposed on the left and right in the width direction of the main body sheet 10, and a pipe 8 serving as a spacer is provided between the bottom weights 7. An elastic member 9 as a cushion is provided between the inner bag portion 11 and the outer bag portion 12.

The guide rail 2 is a guide rail assembly having an outer guide rail 20 and an inner guide rail 21 provided in the outer guide rail 20, and is attached to the vertical frame 200 on the left and right sides of the building opening. A concave portion 202 is formed in the prospective surface 201 of the vertical frame 200, and the first elastic member 13 outside the vertical frame 200 and the second elastic member inside the vertical frame 200 so as to sandwich the prospective wall forming the concave portion 202. 14 is provided. The first elastic member 13 is a long material extending in the opening height direction, and is configured to receive the outer guide rail 20. In one aspect, the second elastic member 14 is a long material like the first elastic member 13, but in another aspect, a plurality of short materials are disposed at predetermined intervals in the opening height direction. It may be a thing. The bolt 15 attaches the plate 16 attached to the bottom wall of the outer guide rail 20, the first elastic member 13, the expected wall (recessed portion 202), the second elastic member 14, and the expected surface of the second elastic member 14 to the opening width direction ( The one end of the bolt 15 is connected to the bottom of the inner guide rail 21, and the other end of the bolt 15 is positioned between the head 17 and the plate 16. A coil spring 18 is interposed.

With the configuration described above, the guide rail 2 (the outer guide rail 20 and the inner guide rail 21) is supported by the vertical frame 200 so as to be movable in the opening width direction and the front-rear direction. Therefore, when a force acts on the shutter curtain 1, the guide rail 2 can move following the bending of the shutter curtain 1. The inner guide rail 21 is composed of an elastic member, and when the force acting on the shutter curtain 1 exceeds a predetermined magnitude, the inner guide rail 21 comes out of the outer guide rail 20 and deforms into an expanded shape. The guide block 5 comes out of the inner guide rail 21 (the end of the shutter curtain 1 is detached from the guide rail 2).

A first guide 22 is provided at an upper end portion of the guide rail 2, and a second guide 23 and a third guide 24 are disposed above the first guide 22 so as to be positioned in the lintel portion. If the shutter curtain 1 is lifted in a state where the guide block 5 at the end of the shutter curtain 1 is disengaged from the inner guide rail 21, the end of the shutter curtain 1 disengaged from the guide rail 2 is positioned outside the guide rail 2. The released shutter curtain end is guided and raised by the second guide 23, and the posture holding bar 6 provided near the lower end portion of the sheet body 10 is guided by the second guide 24 and raised. In the fully open state where the shutter curtain 1 is wound around the winding shaft 3, the lowest guide block 5 is positioned above the first guide 22 (see FIG. 3), and the shutter curtain 1 is lowered from this state. By doing so, the shutter curtain end portion descends while being guided by the guide rail 2 and is accommodated in the guide rail 2.

[B] Shutter curtain edge separation detection device The sheet shutter device has a shutter curtain edge separation detection device. Shutter curtain end separation detecting means for detecting that at least one end of the shutter curtain 1 has detached from the guide rail 2 and transmitting a separation detection signal, and receiving the separation detection signal to stop the shutter curtain abnormally or And / or a shutter curtain control means for raising the shutter curtain. The shutter curtain detachment detection means may be either a non-contact type detection means or a contact type detection means that the shutter curtain end is detached from the guide rail 2. Examples of the non-contact type detection means include an optical method (optical sensor), an electromagnetic wave method, a magnetic method (proximity sensor), and the like. In the drawing, the guide blocks 5 provided at both ends of the shutter curtain 1 are shown as the locking means between the shutter curtain end and the guide rail 2, but the locking means between the shutter curtain end and the guide rail 2 are as follows. A rod as disclosed in Patent Document 2 may be used.

FIG. 11 shows a basic configuration of the shutter curtain control means. The opening / closing machine that moves the shutter curtain up and down via the winding shaft 3 is controlled by the control unit. When an input signal from the passer-by / passing vehicle detection means is transmitted to the control circuit of the control unit, a predetermined signal is transmitted from the control circuit to the motor of the switch. In one aspect, when a passer-by / passing vehicle is detected, an opening signal is automatically input, and the rotational force in the direction in which the winding shaft 3 winds up the shutter curtain 1 is output from the motor of the switch. In the fully open state of the opening, when detection of a passer-by / passing vehicle is lost, a closing signal is automatically input after a predetermined time, and the rotational force in the direction in which the shutter curtain 1 is drawn out from the winding shaft 3 is Output from the motor. An input signal to the control circuit of the control unit may be manually input. The control unit has an operation panel (control panel), and a predetermined signal is transmitted from the control circuit to the motor of the switch according to an input signal from the operation panel. When an open signal is input from the open switch of the operation panel, the rotational force in the direction in which the winding shaft 3 winds up the shutter curtain 1 is output from the motor of the switch. When a closing signal is input from the closing switch of the operation panel, the rotational force in the direction in which the shutter curtain 1 is drawn out from the winding shaft 3 is output from the motor of the switch. If a stop signal is input from the stop switch on the operation panel while the shutter curtain 1 is moving, the power supply to the motor of the switch is cut off and the movement of the shutter curtain is stopped.

When a detection signal is transmitted from the shutter curtain end separation detecting means to the control unit, the shutter curtain enters an abnormally stopped state. The abnormal stop state refers to a state in which the movement of the shutter curtain is stopped and the movement of the shutter curtain is disabled (opening signal and closing signal cannot be input on the operation panel). Further, when an abnormal input state is entered, an abnormal lamp is lit on the operation panel. The operation panel is provided with a release switch, and the abnormal stop state is released by inputting a release signal from the release switch. When the abnormal stop state is canceled, the abnormal lamp lighting is extinguished, and an open signal and a close signal can be input from the operation panel. Furthermore, when a detection signal is transmitted from the shutter curtain end separation detecting means to the control section, the sensors constituting the passer-by / passing vehicle detection means are disabled. The disabled state of the sensor is maintained until the shutter curtain whose end is separated from the guide rail returns to the guide rail, and the disabled state of the sensor is also maintained by the release signal of the release switch.

In the sheet shutter device according to the present invention, the return means to the guide rail 2 at the end of the shutter curtain separated from the guide rail 2 raises the shutter curtain 1 to the fully open position (upper limit position). At the shutter curtain upper limit position, the shutter curtain end is positioned immediately above the guide rail 2, and the shutter curtain end is guided to the guide rail 2 by lowering the shutter curtain 1 from the upper limit position. Therefore, it is necessary to raise the shutter curtain after an abnormal stop. Here, when an open signal is input from the operation panel after canceling the abnormal stop state, a signal that raises the shutter curtain 1 at a lower speed than that when it is normally raised is transmitted to the motor of the switch. The As a method of controlling the ascent at low speed, in one aspect, the state in which the shutter curtain edge is detached from the guide rail 2 is monitored by the separation detection means, and when it is in the separation state, the release signal (or the closure) Signal) is input, the shutter curtain is raised (or lowered) at a preset low speed. If no separation detection is performed by the separation detection means, it means that the shutter curtain 1 has returned to the guide rail 2, and thereafter, when an open signal or a close signal is input, the normal speed To move the shutter curtain 1 up and down. Further, when the shutter curtain is in the fully open position, sensors such as sensors for detecting passers-by and passing vehicles are released from the disabled state, and these sensors become effective.

Example 1 will be described with reference to FIGS. The first embodiment has a non-contact type shutter curtain edge separation detecting means. In the guide blocks 5 provided at both ends in the width direction of the shutter curtain 1, reflecting members (reflecting plates) 50 that reflect light are provided below the lowermost guide blocks 5 at the left and right ends. At the lower ends of the left and right guide rails 2, an optical sensor 51 is provided, and the optical sensor 51 is always reflected from the reflecting member 50 at normal times, that is, when the shutter curtain end is received by the guide rail 2. To detect light. The fact that the end in the width direction of the shutter curtain 1 is disengaged from the guide rail 2 means that the guide block 5 is disengaged from the guide rail 2, so that the reflecting member 50 provided on the guide block 5 is disengaged from the guide rail 2 and light Since the sensor 51 cannot receive the light reflected from the reflecting member 50, when the light cannot be received, it is detected that the shutter curtain end has been detached from the guide rail 2. A state where both the optical sensors 51 of the left and right guide rails 2 detect light is a normal state, and when at least one of the optical sensors 51 does not detect light, an abnormal state is set. When the detection means including the optical sensor 51 detects the separation of the shutter curtain end from the guide rail 2, a separation detection signal is transmitted to the control unit. The transmission of the separation detection signal from the shutter curtain edge separation detection means to the control unit may be wired or wireless.

When the guide rail 2 that can move in the opening width direction and the front-rear direction as shown in FIG. 5 is employed, the optical sensor 51 also needs to swing following the swing of the guide rail. Therefore, in one aspect, the optical sensor 51 is attached to the lower end portion of the guide rail 2 and can move together with the guide rail 2. It is also possible to provide the reflecting member 50 directly on the lower sheet end portion of the lowermost guide block 5 instead of the lowermost guide block 5. However, it is not easy to stably attach the reflecting member 50 to the end portion of the sheet, and considering the ease of attachment, it is advantageous to attach the reflecting member 50 to the lower surface of the lowest guide block 5. Further, since the guide block 5 is constrained to such an extent that it can move up and down within the inner guide rail 21, the vertical movement trajectory of the guide block 5 is substantially vertical and stable with respect to the optical sensor 51. Light can be reflected stably (the optical axis is stable), and stable detection is possible.

A second embodiment will be described with reference to FIGS. The second embodiment has a contact type shutter curtain edge separation detecting means. A plurality of detection members 205 are arranged on the finding surfaces 203 and 204 of the opening vertical frame 200 to which the guide rails 2 on the left and right sides of the opening are attached with a predetermined interval (for example, 1M) in the vertical direction. Yes. In the example of FIG. 9, the detection member 205 provided on the finding surface 203 and the detection member 205 provided on the finding surface 204 are staggered in the vertical direction. It is not limited to. In order to provide good detection performance, the detection member 205 is desirably provided over the entire opening height, but the detection member 205 is not necessarily provided over the entire opening height, and the lower end of the opening. To a predetermined height (lower than the total height of the opening).

The detection member 205 includes a contact portion 206 formed of an axial coil spring and a main body 207 on the proximal end side of the contact portion 206, and the end portion of the shutter curtain 1 is detached from the guide rail 2 to contact the contact portion 206. By contacting 206, the contact portion 206 mechanically detects the separation of the shutter curtain end from the guide rail. Specifically, when the contact portion 206 made of a coil spring is bent by a predetermined amount, it is determined that the shutter curtain end portion is detached from the guide rail, and a separation detection signal is transmitted from the main body 207 to the control unit. The transmission of the separation detection signal from the shutter curtain edge separation detection means to the control unit may be wired or wireless. The contact portion 206 is not limited to a shaft coil spring. For example, the contact portion 206 is composed of a rod that can rotate in the front-rear direction with the base end side as a rotation fulcrum, When the rod rotates by a predetermined amount, it may be determined that the shutter curtain end is detached from the guide rail.

The detection member 205 is opposed only to the shutter curtain end and detects only the shutter curtain end separated from the guide rail 2, and the detection range of the detection member 205 is limited to the shutter curtain end. It does not detect the full width of the shutter curtain. Therefore, during normal times, when the passerby or passing vehicle passes through the building opening, the detection member 205 does not detect it erroneously. In the illustrated example, the protruding dimension of the detection member 205, that is, the dimension of the contact member 206 is 10 cm. The position where the detection member 205 is provided is not limited to the one shown in the figure, but even when the shutter curtain is bent (including when the guide rail swings following the deflection of the shutter curtain), the bent shutter It is necessary that the curtain does not come into contact with the contact portion 206 to make a false detection. That is, as shown in FIG. 10, the contact member 206 extends in the opening width direction (finding direction) so as to face the shutter curtain end portion with a predetermined interval D1, but the predetermined interval D1 is The dimension is set to be larger than the bulging dimension D2 in the expected direction of the portion facing the contact member 206 of the shutter curtain 1 (sheet body 10) bulged by the contact pressure or the like.

[C] Shutter Control by Wind Pressure Detection The sheet shutter device according to the present invention includes a wind pressure detection means, a means for comparing and determining the detected wind pressure and a preset windproof pressure, and the detected wind pressure reduces the windproof pressure. When it is determined that the value exceeds the limit, a means for transmitting an abnormal stop signal and a shutter curtain control means for receiving the abnormal stop signal and abnormally stopping the shutter curtain are provided. A wind speed (wind force) sensor W that constitutes a wind pressure detecting means is installed at a predetermined outdoor part of the opening of the building to which the seat shutter is attached. The wind speed sensor W detects wind direction and wind force. When the wind pressure calculated from the wind speed detected by the wind speed sensor W exceeds the wind pressure resistance, an abnormal stop signal is transmitted to the shutter control unit, and the shutter curtain is set in an abnormal stop state. Further, an abnormality is displayed by an abnormality lamp or buzzer on the operation panel. By providing the wind speed sensor W, the movement of the sheet shutter is stopped before the shutter curtain 1 is detached from the guide rail 2 by the wind pressure, and a warning is given that the wind pressure is higher than the wind resistance performance of the sheet shutter. In one embodiment, when there is an abnormality display, the seat shutter is raised immediately after canceling the abnormal stop state, and the building opening is closed by a side weight shutter or an overhead door. When the shutter curtain is abnormally stopped by the wind pressure, at the same time, when the shutter curtain end portion is detached from the guide rail 2, the control is performed according to the control flow at the time of detecting the shutter curtain end separation described below. .

[D] Flow of control when shutter curtain edge separation is detected A flow of control when shutter curtain edge separation is detected will be described. During normal operation (including both when the shutter curtain is moving and when it is stopped), if the shutter curtain edge is detached from the guide rail, the shutter curtain edge separation detection means is activated and the shutter curtain edge is detached. Is detected, and a separation detection signal is transmitted to the control unit, whereby the shutter curtain enters an abnormally stopped state. Similarly, when wind pressure exceeding the specified performance acts on the shutter curtain, the wind speed sensor is activated and an abnormal stop signal is transmitted to the control unit, so that the shutter curtain enters an abnormal stop state.

When the shutter curtain is abnormally stopped, an abnormal lamp is lit on the operation panel. The abnormal stop state is released by inputting a release signal from the release switch on the operation panel. When an open signal is input from the open switch on the operation panel after the abnormal state is canceled, the shutter curtain is raised to the fully open position at a lower speed than the normal speed. Here, if the cause of the shutter curtain edge separating from the guide rail is due to a vehicle hitting the shutter curtain, after the cause is removed, the operation panel mode is set to automatic mode for normal operation. I do. If the cause of the shutter curtain edge separating from the guide rail is due to wind pressure, open and close the opening using the shutter device (heavy shutter, overhead door, etc.) with the seat shutter device fully open. . If it can be confirmed that the wind pressure has become sufficiently small, normal operation is performed with the mode of the operation panel of the sheet shutter device set to the automatic mode. Note that the flowchart shown in FIG. 13 shows one aspect of the control of the shutter curtain according to the present invention, and the processing after the shutter curtain end portion is detached from the guide rail may be automatically controlled. In one aspect, when the control unit receives a separation detection signal, the shutter curtain is brought into an abnormally stopped state. When the shutter curtain is moving, the motor of the switch is automatically stopped to stop the movement of the shutter curtain and disable the signal input from the operation panel. When the shutter curtain is stopped (for example, when the opening is fully closed), the signal input from the operation panel is disabled. A predetermined drive signal is automatically transmitted from the control circuit to the motor of the switch after the abnormal stop after the abnormal stop, and the winding shaft is rotated at a low speed to raise the shutter curtain so as to be fully opened. After fully opened, normal operation is restored. The sensor that detects the passer-by / passing vehicle is maintained in an incapable state until the shutter curtain is raised to the fully open position, and the sensor that detects the passer-by / passing vehicle becomes effective after the shutter curtain is fully opened.

The present invention can be used for a sheet shutter device.

It is the whole front view and whole side view of a sheet shutter device. It is a figure which expands and shows the front view and lower end part of a sheet-like shutter curtain of a sheet shutter device. It is the front view and top view which expand and show the sheet shutter apparatus of FIG. In addition, the opening width dimension and the opening height dimension are shortened. FIG. 4 is a side view of the sheet shutter device of FIG. 3. The upper diagram is an enlarged view of one guide rail portion in the plan view of FIG. 3, and the lower diagram is a diagram showing a state in which the shutter curtain end portion is detached from the guide rail from the state of the upper diagram. . It is a figure explaining a shutter curtain edge part separation detection means of a non-contact method. It is a figure explaining the Example of the shutter curtain edge part detachment | leave detection means of a non-contact system. It is a figure explaining a shutter curtain edge part separation detection means of a contact method. It is a figure explaining the Example of the contact-type shutter curtain edge part removal | desorption detection means. In the Example shown in FIG. 9, it is a figure which shows the positional relationship of a detection member and a shutter curtain. It is a figure which shows the structure of a shutter curtain control part. It is a figure explaining control of the sheet shutter device by wind pressure detection. It is a flowchart when it separates from a shutter curtain edge part from a guide rail. It is a figure explaining a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shutter curtain 10 Sheet | seat main body 2 Guide rail 5 Guide block 50 Reflective member 51 Photoelectric switch 205 Detection member 206 Contact member

Claims (6)

A sheet-like shutter curtain that opens and closes the building opening;
A pair of guide rails for guiding both ends of the shutter curtain;
A shutter curtain end separation detecting means for detecting that at least one end of the shutter curtain has separated from the guide rail and transmitting a separation detection signal;
Shutter curtain control means for receiving a separation detection signal and abnormally stopping or / and raising the shutter curtain;
A sheet shutter device having 2. The sheet shutter device according to claim 1, wherein the shutter curtain control means raises the shutter curtain at a lower speed than a normal rising speed. 3. The sheet according to claim 1, wherein the sheet shutter device has a return means for the end portion of the released shutter curtain, and the return means raises the shutter curtain to a fully open position. Shutter device. 4. The sheet shutter device according to claim 1, wherein the shutter curtain end separation detecting unit detects the separation of the shutter curtain in a non-contact manner. 5. The shutter curtain according to claim 4, wherein a plurality of locking members positioned in the guide rail and guided by the guide rail are provided at both ends of the shutter curtain at intervals in the vertical direction. A sheet shutter device comprising: a detection member provided on a locking member; and a detection member provided at a lower end portion of the guide rail and detecting the detection member in a non-contact manner. 4. The shutter curtain detachment detecting means according to claim 1, further comprising a contact member facing the shutter curtain end with a predetermined interval, and the shutter curtain end separated from the guide rail is the contact member. A sheet shutter device for detecting separation of an end portion of a shutter curtain by contact.

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