JP2014101738A - Electric shutter apparatus for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric shutter apparatus for a building, which enables a projector 10 and a photodetector 11, configuring obstacle detection means, to be attached in the state of being positioned near a shutter core without protruding to the outside from a guide rail 4.SOLUTION: A projector 10 and a photodetector 11 are attached to a substrate material 5 that is provided between a guide rail 4 and a skeleton 6 so as to attach the guide rail 4 to the side of the skeleton 6. Detection of an obstacle during a closing operation of a shutter curtain 1 is disabled below positions in which the projector 10 and the photodetector 11 are attached.

Description

  The present invention relates to a technical field of an electric shutter device for building installed in an opening such as a doorway of a building.

Generally, this type of electric shutter device for building is configured to open and close while the shutter curtain is guided by the left and right guide rails based on forward and reverse driving of the opening and closing machine. During such an opening / closing operation, the presence or absence of an obstacle is detected. When an obstacle is detected, an obstacle avoiding operation such as an emergency stop is performed.
As one of the sensors that detect such obstacles, obstacles are detected based on the fact that light projectors and receivers are provided on the left and right sides of the opening like photoelectric sensors, and the light from the projector to the light receiver is blocked by the obstacles. (For example, refer to Patent Document 1).

JP-A-7-324568

  By the way, although the said conventional thing is related with a sheet shutter apparatus, since the light projecting / receiving device is provided so as to protrude on the opposite side to the housing with respect to the guide rail, for example, a seat plate slat having an inverted T shape, for example. When the shutter curtain is used, the seat plate slats may block the optical axis of the light emitter / receiver, which may cause false detection. It protrudes to the opposite side and is provided in an exposed state where the optical axis is not blocked by the seat plate slats. For this reason, there is a risk that objects will hit the projector / receiver, and the obstacle detection position will be far from the curtain core of the shutter curtain, making it impossible to detect obstacles with high accuracy. There is a problem that a dedicated mounting member is required, the number of parts is increased, and the assembling work is complicated, which is a problem to be solved by the present invention.

The present invention was created with the object of solving these problems in view of the above circumstances, and the invention of claim 1 is a guide rail that is attached to an outdoor or indoor mounting surface of a housing. And a shutter curtain that is fitted in the guide groove of the guide rail to be opened and closed, a winding drum around which the shutter curtain is wound, and an opening / closing device that drives the winding drum to open and close In the architectural electric shutter device to be constructed, when the obstacle detecting means for detecting the obstacle when the shutter curtain is closed using the projector / receiver, the projector / receiver has the guide groove on the housing side. An electric shutter device for building, which is provided on an attachment member interposed between a guide groove and a housing attachment surface for attachment.
According to a second aspect of the present invention, the obstacle detection means constituted by a light projecting / receiving device outputs an obstacle detection signal to a control unit that controls opening and closing of the switch, and the control unit includes the obstacle detection unit. Non-detection setting means is provided for ignoring or stopping the detection of obstacles by the detection means when the lowermost position of the shutter curtain is lower than at least the position where the light emitter / receiver is provided. The electric shutter device for building according to claim 1.
According to a third aspect of the present invention, the obstacle detection means is configured to detect an obstacle by detecting an overload during the closing operation, in addition to the first obstacle detection means constituted by the light projector / receiver. The second obstacle detection means is configured to continue the obstacle detection even when the first obstacle detection means enters a non-detection state. The electric shutter device for building according to claim 2.
According to a fourth aspect of the present invention, when the second obstacle detection means has a lowermost position of the shutter curtain that is at least lower than a position where the projector / receiver is provided, the sensitivity of the obstacle detection is switched to high sensitivity. The architectural electric shutter device according to claim 3, wherein the electric shutter device is configured as follows.

According to the first aspect of the present invention, the light emitter / receiver constituting the obstacle detection means can be brought closer to the shutter core, so that the light emitter / receiver can detect the guide rail guide groove. Since it is provided on a mounting member necessary for mounting the projector to the housing mounting surface, the mounting member can be effectively used to assemble the light emitter / receiver, so that a dedicated mounting member is not required and the number of parts can be reduced. In addition, the assembly can be simplified and the assembly is not exposed to the outside of the guide rail, and it is possible to prevent the object from colliding and being damaged.
According to the invention of claim 2, the obstacle detecting means by the light emitter / receiver is in a non-detection state when the lowermost end of the shutter curtain is lower than the position where the light emitter / receiver is provided. Assuming that a shutter curtain provided with a T-shaped seat plate slat is used, when the seat plate slat passes through the projector / receiver position, it is not erroneously detected and stopped, and smooth. A closing operation can be performed.
According to the invention of claim 3, there is no obstacle detection because the obstacle detection by the second obstacle detection means is continued even if the first obstacle detection means is in the non-detection state. The closing operation in the state is not performed.
According to the invention of claim 4, the obstacle detection by the second obstacle detection means becomes a high sensitivity state when the first obstacle detection means is in the non-detection state, and the first obstacle It is possible to supplement that the object detection means is in a non-detection state.

It is a schematic front view of the electric shutter device for construction. (A) is a horizontal sectional view of the electric shutter device for building attached outdoors, (B) is the principal part enlarged horizontal sectional view. It is a principal part expanded horizontal sectional view which shows the assembly procedure of a guide rail. It is a horizontal sectional view of the electric shutter device for buildings attached indoors. It is a block diagram of the control circuit of the electric shutter device for construction. It is a flowchart figure which shows a control procedure. It is a flowchart figure which shows the procedure of opening-and-closing drive control. It is an electric shutter device for construction showing a second embodiment, and (A) and (B) are the principal part expansion horizontal sectional views attached to the outdoor side and the indoor side, respectively. It is an electric shutter device for buildings showing a 3rd embodiment, and (A) and (B) are the principal part expansion horizontal sectional views attached to the outdoor side and the indoor side, respectively.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a shutter curtain of an electric shutter device for construction. The shutter curtain 1 is interlocked with each other on the upper and lower sides of a plurality of slats 1a and connected in a series in the vertical direction. The seat plate slats 1b are connected to each other, the fitting part of the seat plate slats 1b to the guide rail 4 is cut out, and the shutter curtain 1 is formed at the upper end of the opening. It is wound around the take-up drum 2 arranged, and the opening is opened and closed while being guided by the guide rails 4 provided on the left and right of the opening based on the forward / reverse drive of the opening / closing machine 3. Are both conventional.

The guide rail 4 is configured to have a guide groove 4a having a concave groove shape, and is attached to the housing 6 side via a base material 5 that is an attachment member to the housing 6. The base material 5 is composed of first and second base half portions 7 and 8. 2 and 3, the guide rail 4 is attached to the outdoor side surface 6 a of the housing 6. In the embodiment of FIG. 4, the guide rail 4 is attached to the indoor side surface 6 b of the housing 6. First, the case where the guide rail 4 of the embodiment of FIGS. 2 and 3 is attached to the outdoor side will be described.
The first base half 7 is shaped like a cross section when viewed in a horizontal section, and the first base half 7 is in a state where the outer side surface of the center straddle piece 7 a is applied to the outdoor side surface 6 a of the housing 6. It is fixed to the housing side through a fixing member 9 such as a screw from the opening side.
On the other hand, the second base half part 8 is set to a size that fits the first base half part 7 and is in the shape of a square when the horizontal base section is similarly cut. The guide rail 4 is attached through the fixing member 9 from the opening of the second base half 8 in a state where the frame side piece 4a of the guide rail 4 is applied to the outer side surface of the center straddle piece 8a.
Then, the first and second ground half portions 7 and 8 are fitted in the second ground half portion 8 to which the guide rail 4 is attached to the first ground half portion 7 attached to the housing 6 side. The guide rail 4 can be attached to the housing 6 side by fixing the opening left and right inner pieces 7b, 8b of each of the openings through the fixing member 9 in a state of facing the outer side from the inner side in the left and right direction. By doing so, the guide rail 4 is set so that it cannot be removed from the outdoor side, and security is taken into consideration.

  On the other hand, the guide rail 4 shown in FIG. 4 is attached to the indoor side. In this case, the first base half 7 is attached to the housing 6 via the fixing member 9 and the second base material 8 is straddled. The guide rail 4 is attached to the piece 8a via the fixing member 9, and the second base half 8 to which the guide rail 4 is attached is replaced with the first base half 7 attached to the housing 6 side. In the state of being externally fitted, the openings of the first and second base half portions 7 and 8 are fixed through the fixing member 9 in a state where the left and right outer pieces 7c and 8c face each other from the outer side in the left and right direction. The rail 4 can be attached to the housing 6 side. By doing so, the guide rail 4 is set so that it cannot be removed from the outdoor side, and security is considered.

  Reference numerals 10 and 11 denote light projecting and receiving devices that project and receive light to detect obstacles. For example, photoelectric sensors and laser beam sensors that are generally known can be used. The base material 5 is attached to the left and right base materials 5 in a state of being located at a predetermined height (for example, a height of 50 cm) from the floor surface FL. In addition, the light emitters / receivers 10 and 11 can be provided not only in one set but also in a plurality of sets such as two sets, for example. In that case, the installation height from the floor surface FL is lower than the installation height. However, it can be installed at an appropriate height if necessary.

  Since the procedure for attaching the projectors and receivers 10 and 11 to the base material 5 is the same, an example of the procedure for attaching the projector 10 will be described. First, the projector 10 is assembled in a state of penetrating through the mounting hole 8d formed in the inner piece 8b of the second ground half 8 and necessary wiring 12 is set in the second ground half 8. In this state, the second ground half 8 to which the guide rail 4 is assembled is externally fitted into the first ground half 7 attached to the housing 6 side. 7 is provided with a notch 7d for loosely fitting the projector 10 so that the second base half 8 is externally incorporated into the first base half 7. In this case, the notch 7d is loosely fitted into the projector 10 so that it can be easily assembled.

  The forward / reverse driving of the opening / closing machine 3 is executed based on a control command from the control unit 13. The control unit 13 performs opening / closing control including obstacle avoidance control based on obstacle detection. These controls are described below.

First, the control unit 13 receives an operation signal from the open / close push button switch 14 (which may of course be a remote operation signal for open / close if necessary), from the position detection means C provided in the switch 3. A position detection signal is input. The controller 13 outputs a drive control command for the switch 3 based on these input signals. Next, a method for the drive control command for the switch 3 will be described with reference to a flowchart.
Incidentally, the position detection means C can be configured using a normally known detection device such as a potentiometer or an encoder.

First, when the power is turned on, the control unit 13 starts the system and performs various determination controls after the initial settings are made. In the present embodiment, first, in the fully open and fully closed position setting mode. (S1) is determined whether or not the switching operation has been performed. If YES is determined as being performed, the control of the fully open / fully closed position setting mode is executed, and if NO is determined, the determination is NO. After a preset timer time (for example, 5 minutes) has elapsed, the opening / closing drive control mode is executed.
When switching to the fully open / fully closed position setting mode, it is determined whether or not a fully open / fully closed position setting operation has been performed (S2), and a YES determination has been made because the setting operation has been performed. Is registered (S3), and then a determination is made as to whether or not a non-detected position setting operation has been performed (S4), and a YES determination is made as a setting operation has been performed. Then, the operation position of the non-detection position where the setting operation has been performed is registered, and the process returns. If it is determined that the non-detection position setting operation has been performed (S4) and NO is determined not to be performed, the process returns.
On the other hand, if it is determined that the fully open / fully closed position setting operation has been performed (S2) and NO is determined not to be performed, it is further determined whether the fully open / fully closed position is set (S6). If YES is determined as being set, a determination is made as to whether or not the non-detection position setting operation has been performed (S4). If NO is determined, control is returned to return if NO is determined. Is done.

The mode switching operation to the fully open / closed position setting mode is, for example, a special push operation of the push button switch 14, for example, an operation of repeating the push operation of the close button 14d three times while pushing the stop button 14s. Switch to fully open / closed position setting mode. When this mode is entered, a special buzzer sound is emitted (for example, repeated beeps, beeps, etc.). In this mode, the opening / closing machine 13 is set to open and close (push-off operation) while pressing the open button 14u and the close button 14d.
Therefore, first, the opening button 14u is pushed and released, and the opening button 14u is released at the stage where the wide T-shaped portion of the seat plate slat 1b comes into contact with the swallowing portion (magsa) of the shutter case. The fully open position is set by pressing the open button 14u twice while pressing 14s.
Next, the shutter release button 14d is pressed to operate the shutter curtain 1 to close. When the lower end of the seat plate comes into contact with the floor surface FL, the close button 14d is released, and then, for example, twice while pressing the stop button 14s. By pressing the close button 14d, the fully closed position is set, and the control unit 13 sets the rotation speed of the opening / closing machine 3 until the opening / closing machine 3 reaches zero rotation in the fully opened position state. Registration (storage) is performed, and based on this, opening / closing control of the shutter curtain 1 described later is executed.

  On the other hand, an obstacle non-detection position setting operation can be performed in a state where the fully opened and fully closed positions are set. In the obstacle non-detection position, the light from the light projector 10 to the light receiver 11 is the seat plate. It is set as a position that is blocked by the slat 1b (height at which the projectors and receivers 10 and 11 are mounted (a position that is 50 cm higher than the floor surface FL)) or a position that is slightly higher than this position (for example, a height that is 55 cm from the floor surface FL) When the seat plate slat 1b is located at a position lower than the set position, the obstacle detection by the light emitters / receivers 10 and 11 is set to be ignored or stopped.

This obstacle non-detection position setting operation is performed, for example, by pressing the close button 14d, and when the seat plate slat 1b descends to a position to be set to the obstacle non-detection position, the push operation of the close button switch 14d is stopped. For example, by pressing the open button 14u, the close button 14d, the open button 14u, and the close button 14d while pressing the stop button 14s, the setting operation of the obstacle non-detection position is performed. The registered non-detection position is registered (stored), and the process returns.
The procedure for setting the obstacle non-detection position is a process in which the shutter curtain 1 is closed by operating the close button 14d of the push button switch 14 in the obstacle non-detection position setting mode. When the seat plate slat 1b is blocked across the optical axis of the light emitters / receivers 10, 11, the mounting height of the light emitters / receivers 10, 11 is determined, and the obstacle non-detection position is set based on this. You can also.
Incidentally, in this fully open / fully closed position setting mode, when the switching operation to the open / close drive control mode is interrupted, or when a preset timer time (for example, 5 minutes) elapses, the control unit 13 performs the open / close drive control mode. It is set to forcibly switch the mode.

  In the opening / closing drive control mode S7, the following opening / closing drive control is executed. First, a determination is made as to which push button the operation signal is input from the push button switch 14 (S8). If the operation signal is a stop operation signal, the switch 3 remains stopped. However, if the operation signal is an open operation signal, the open drive control is executed.

  First, when the input signal is an opening operation signal, it is determined whether or not the shutter curtain 1 is fully opened (S10), and if it is determined that the shutter curtain 1 is fully open, the switch 3 is stopped (S11). And return. On the other hand, if NO is determined as not fully open, the switch 3 is opened (S12), and it is determined that an operation signal for the stop button 14s is input during the opening drive (S13). Then, the driving of the opening / closing machine 3 is stopped (S14) and the process is returned. On the other hand, when it is determined that there is no operation signal for the stop button 14s, it is set so that the determination of whether or not to fully open (S10) is made again.

By the way, in the present embodiment, the obstacle detection when the shutter curtain 1 is closed is performed by using the first obstacle detection means A due to the obstacle blocking the optical axis of the light projecting and receiving devices 10 and 11, and the obstacle. The second obstacle detection means B which performs overload detection based on the fact that an object hits the seat switch 1b and prevents the shutter curtain 1 from being closed is executed in parallel. Means B can be switched between high and low sensitivity.
As the overload detection sensor, a conventionally known sensor such as a sensor that detects a change in the current of the switch 3 or a sensor that detects a change in the rotational speed can be used.

If the input signal is a closing operation signal, it is determined whether or not it is fully closed (S15), and if it is determined that it is fully closed, the switch 3 is stopped (S16). And return. On the other hand, if NO is determined that the shutter curtain 1 is not fully closed, it is determined whether or not the shutter curtain 1 is below the set obstacle non-detection position (S17). When it is above the object non-detection position and NO is determined, the sensitivity of the second obstacle detection means B is switched to a low sensitivity (S18) and the closing drive of the switch 3 is executed (S19). To do. Then, in this closed drive, a determination is made as to whether or not at least one of the first and second obstacle detection means A, B has detected an obstacle (S20). If the operation is performed, the drive of the switch 3 is stopped (emergency stop) (S21), the obstacle avoidance operation of the switch 3 is executed (S22), and the process returns, but the obstacle in the present embodiment Regarding the avoidance operation, when the first obstacle detection means A detects an obstacle, the obstacle actually blocks the optical axis of the light emitters / receivers 10 and 11, so that the obstacle is actually detected. On the other hand, in the case where the second obstacle detection means B detects an obstacle, the shutter curtain 1 receives a strong wind and the sliding resistance with the guide rail 4 is increased. Because there is a false detection that would be detected, There.
For example, when the first obstacle detection means A detects an obstacle, the driving of the switch 3 is stopped (S21), and then the switch 3 is opened for a predetermined time (or a predetermined height). On the other hand, when the second obstacle detection means B detects an obstacle, the operation of the switch 3 is stopped (S21). ), The opening / closing machine 3 is opened (touched up) for a predetermined time (or a predetermined height) and then closed again (down). This operation is repeated a plurality of times (for example, twice). Even when an obstacle is still detected, the alarm buzzer is sounded and the shutter curtain 1 is stopped.
Furthermore, when the second obstacle detection means B detects an obstacle, when the obstacle is detected at a position different from the fully-open obstacle detection position when the second closing operation is performed again, the above-described operation is performed. In the case where the wind is mistakenly detected, and the obstacle detection is repeated there, if the detection position is the same, the touch-up / down operation is performed a plurality of times, and then it is opened and stopped. When the detection positions are different, the touch-up / down operation is repeated.
Incidentally, in the present embodiment, the touch-up amount when the first obstacle detection means A detects the obstacle is smaller than the touch-up amount when the second obstacle detection means B detects the obstacle. doing. This is because the second obstacle detection means B is overload detection, so it may take time until the obstacle is detected, and it may be pushed into the obstacle. If the obstacle is detected in this unstable state, there is a possibility that the obstacle cannot be detected with high accuracy. To avoid this, the second obstacle detection means B is used as an obstacle. In the case of detection, the touch-up amount is lengthened to eliminate the pushing into the obstacle, and the obstacle detection is performed with the rotation of the switch 3 being stable.
On the other hand, when NO is determined that no obstacle is detected in the determination of whether or not at least one of the first and second obstacle detection means A and B has detected an obstacle (S20). Then, it is determined whether or not a stop operation signal is input from the stop button 14s (S23). If YES is determined that a stop operation signal is input, the driving of the switch 3 is stopped (S24). If NO is determined that there is no input, the closing drive control (S17) of the switch 3 is executed.

On the other hand, in the determination (S17) of whether or not the obstacle non-detection position is equal to or less than the obstacle non-detection position, when the shutter curtain 1 is equal to or less than the obstacle non-detection position and YES is determined, the first obstacle detection means A is stopped (S25), and the switch 3 is closed (S27) while the sensitivity of the second obstacle detection means B is switched to high sensitivity (S26). In this embodiment, the fact that the first obstacle detection means A is stopped by making the second obstacle detection means B highly sensitive or slowing the closing operation speed is supplemented in this embodiment.
Then, it is determined whether or not the switch 3 is fully closed in the process of closing the switch 3 (S28). If YES is determined that the switch is fully closed, the drive of the switch 3 is stopped (S29) and the process returns. However, if NO is determined in the above determination (S28) that it is not fully closed, it is determined whether or not the second obstacle detection means B has detected an obstacle (S30) and the obstacle is detected. If a determination of YES is made, the same emergency stop (S31) and obstacle avoiding operation (S32) as those performed when the obstacle is detected in the determination (S17) are executed, and the process returns.
On the other hand, if NO is determined in the determination (S30) that there is no obstacle detection, it is determined whether there is an operation signal input from the stop button 14s (S33), and there is an input. If a determination of YES is made, stop control of the switch 3 is performed (S34), and the process returns. If NO is determined because there is no input, a determination is made as to whether or not the position is below the obstacle non-detection position. (S17) is executed.
When the shutter curtain 1 is below the obstacle non-detection position, the closing operation speed of the opening / closing machine 3 may be switched to a low speed.

  In the present embodiment configured as described, the shutter curtain 1 is opened and closed by the guide rail 4 provided on the housing 6 side to open and close the opening, but the shutter curtain 1 is closed. The projectors and receivers 10 and 11 constituting the obstacle detecting means when operating are attached by effectively using the base material 5 provided for attaching the guide rail 4 to the housing, so that a dedicated attachment member is unnecessary. As a result, the number of parts is reduced and the mounting operation is simplified. Moreover, since the attached light emitters / receivers 10 and 11 are attached to the base material 5 between the outdoor side surface 6a or the indoor side surface 6b of the housing and the guide rail 4, they are close to the shutter core and detect obstacles. In addition to improving the accuracy, the light emitters / receivers 10 and 11 are disposed between the guide rail 4 and the housing 6 so that they are not attached in an exposed state projecting to the outside. It is possible to avoid problems such as collision and damage.

  In addition, obstacle detection by the light emitters / receivers 10 and 11 is such that the inverted T-shaped seat plate slat 1b provided at the lowermost end of the shutter curtain 1 is higher than or higher than the height at which the light emitters / receivers 10 and 11 are provided. As a result of the non-detection state in the closing operation from the position, when the seat plate slat 1b passes through the positions of the light projecting and receiving devices 10 and 11, the obstacle detection is not erroneously detected and stopped. A closing operation can be performed.

  In addition, in the present embodiment, as the obstacle detection means, in addition to the first obstacle detection means A constituted by the light projector / receivers 10 and 11, obstacle detection is performed by detecting an overload during the closing operation. The second obstacle detection means B is provided, and the second obstacle detection means B detects the obstacle even when the first obstacle detection means A enters the non-detection state. Since it is configured to continue, the obstacle detection by the second obstacle detection means B is continued even if the first obstacle detection means A enters the non-detection state. There is no possibility that the closing operation will be performed in the absence of this.

  Further, in this case, the second obstacle detection means B is set so that the sensitivity of obstacle detection is switched to high sensitivity when the first obstacle detection means A enters the non-detection state. Therefore, it can be supplemented that the first obstacle detection means A is in a non-detection state.

Of course, the present invention is not limited to the above-described embodiment, and may be the second embodiment shown in FIG. In this case, guide rails 12 are attached to the outdoor-side attachment surface 6a and the indoor-side attachment surface 6b of the housing 6. The guide rail 12 has a groove shape, and the left and right ends of the shutter curtain 1 The guide groove portion 12a to be fitted in a loose fit and the left and right leg portions 12b and 12c extending from the left and right ends of the guide groove portion 12a toward the housing 6 side are integrally formed. The leg portion 12b is on the opening side of the guide groove portion 12a, and the other leg portion 12c is on the groove bottom side of the guide groove portion 12a.
On the other hand, 13 is an auxiliary bracket, and the auxiliary bracket 13 is L-shaped. And when guide rail 12 is what is attached to outdoor side attachment surface 6a of case 6 (Drawing 8 (A)), state where standing piece 13b is located in the opening side, case opposite piece 13a of auxiliary bracket 13 After fixing to the housing 6 via a fixing member 9 such as a screw, the projector 10 (or the light receiver 11) is inserted through the mounting hole 12d drilled in one leg portion 12b of the guide rail 12, One leg 12b is brought into contact with the standing piece 13b in a state of being applied from the opening side. At this time, the projector 10 (or the light receiver 11) is loosely fitted into a notch 13c formed in the standing piece 13b, and in this state, the one leg portion 12b and the standing piece 13b are connected via the fixing member 9. By fixing, the assembly on the outdoor side can be performed with respect to the housing 6 of the guide rail 12. In this case, the mounting members of the light emitters / receivers 10 and 11 are the guide rails 12, specifically the guides. One leg 12b of the rail 12 is formed.

  Further, in this case, when the guide rail 12 is attached to the indoor side attachment surface 6b of the housing 6 (FIG. 8B), the housing-facing piece 13a of the auxiliary bracket 13 and the standing piece 13b are the guide groove portions. After being fixed to the housing 6 via a fixing member 9 such as a screw while being positioned on the groove bottom side of 12a, the projector 10 (or the light receiver 11) is inserted into the mounting hole 12d formed in one leg portion 12b of the guide rail 12. ) Is fixed to the upright piece 13b via the fixing member 9 so that the other side leg portion 12c can be assembled to the housing 6 of the guide rail 12 on the indoor side. In this case, the mounting members of the light projecting / receiving devices 10 and 11 are guide rails 12, specifically, one leg 12 b.

Further, a third embodiment shown in FIG. 9 may be used. In this case, the guide rails 14 are similarly attached to the outdoor-side attachment surface 6a and the indoor-side attachment surface 6b of the housing 6. The guide rail 1 has a concave groove shape, and both left and right end portions of the shutter curtain 1. Is inserted in a loose-fitting manner, a leg portion 14b extending from the opening side end of the guide groove portion 14a toward the housing 6 side, and an opening groove portion 14a from the housing 6 abutting end of the leg portion 14b. And a bent piece 14c that is bent toward the bottom of the groove.
On the other hand, 15 is an auxiliary bracket, and the auxiliary bracket 15 is folded into an L-shape from the first piece 15a that abuts the outdoor-side attachment surface 6a or the indoor-side attachment surface 6b of the housing 6 and the first piece 15a. The second end portion 15b is bent and integrated with a second piece 15b welded 15c in contact with the groove bottom piece of the guide groove portion 14a.
When the guide rail 14 is attached to the outdoor side attachment surface 6a of the housing 6 (FIG. 9A), the bent piece 14c of the guide rail 14 is welded 14e, and then the first of the auxiliary bracket 15 is attached. The piece 15a is welded 15d by being applied to the housing side attachment surface 6a, and the second piece 15b and the guide groove 14a are in contact with the tip of the second piece 15b applied to the groove bottom piece of the guide groove 14a. The guide rail 14 can be attached to the housing side by welding 15c at the applied portion. In this case, the light projector 10 (or the light receiver 11) is mounted through the mounting hole 14d formed in the leg portion 14b. In this case, the mounting members for the light projectors 10 and 11 are the guide rails 14. Yes, specifically the leg 14b.

Further, in this case, when the guide rail 14 is attached to the indoor side attachment surface 6b of the housing 6 (FIG. 9B), the welding 14d of the bent piece 14c of the guide rail 14 and the auxiliary bracket are performed in the same manner as described above. Fifteen first pieces 15a are welded 15d, and the second pieces 15b are welded 15c to the guide grooves 14a.
In this case, the mounting members for the light projecting / receiving devices 10 and 11 are guide rails 14, specifically, leg portions 14 b.

  INDUSTRIAL APPLICABILITY The present invention can be used for an architectural electric shutter device that is built in an opening of a building.

DESCRIPTION OF SYMBOLS 1 Shutter curtain 4 Guide rail 5 Base material 6 Housing 10, 11 Light emitter / receiver A 1st obstacle detection means B 2nd obstacle detection means

Claims (4)

  A guide rail attached to a mounting surface on the outdoor side or indoor side of the housing, a shutter curtain fitted in a guide groove of the guide rail and guided to open and close, a winding drum around which the shutter curtain is wound, In an electric shutter apparatus for construction configured to include an opening / closing device that opens and closes a winding drum, an obstacle detecting means for detecting an obstacle when the shutter curtain is closed is configured using a light projecting / receiving device. At this time, the projector / receiver is provided on an attachment member interposed between the guide groove and the housing attachment surface for attaching the guide groove to the housing side.   The obstacle detection means constituted by a light emitter / receiver outputs an obstacle detection signal to a control unit that controls opening and closing of the switch, and the control unit performs obstacle detection by the obstacle detection unit. 2. A non-detection setting means for disabling or disabling when the lowest position of the shutter curtain is at least lower than the position where the light projector / receiver is provided is provided. Electric shutter device for construction.   The obstacle detection means includes a second obstacle detection means for detecting an obstacle by detecting an overload during the closing operation, in addition to the first obstacle detection means constituted by the light emitter / receiver. The second obstacle detection means is configured to continue the obstacle detection even when the first obstacle detection means enters a non-detection state. Electric shutter device for construction.   The second obstacle detection means is set so that the sensitivity of obstacle detection is switched to high sensitivity when the lowermost position of the shutter curtain is at least lower than the position where the light emitter / receiver is provided. The architectural electric shutter device according to claim 3.

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