JP6401809B2 - Electric shutter device for construction - Google Patents

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 emitter / receiver is provided so as to protrude on the opposite side to the housing with respect to the guide rail, for example, reverse T
When this is used in a shutter curtain provided with a letter-shaped seat plate slat, the seat plate slat may block the optical axis of the light emitter / receiver and cause false detection. It protrudes from the rail to the opposite side of the housing 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 electric shutter device for building to be constructed, when the obstacle detection means for detecting the obstacle when the shutter curtain is closed using the projector / receiver, the obstacle detection means configured by the projector / receiver is The obstacle detection signal is output to a control unit that controls opening and closing of the switch, and the controller detects obstacle detection by the obstacle detection means. Lower end position has not detection setting means for the non-detection is provided ignore or stop when lower than the position provided with at least the emitter and receiver, the obstacle detecting means is constituted by the emitter and receiver In addition to the first obstacle detection means, the second obstacle detection means is provided, and the second obstacle detection means is configured so that the first obstacle detection means is not detected. It is configured to continue obstacle detection, and when the lowermost position of the shutter curtain is lower than at least the position where the projector / receiver is provided, the sensitivity of obstacle detection is set to be switched to high sensitivity. It is the electric shutter device for buildings characterized by having.
A second aspect of the present invention, the second obstacle detection means is a building electrical shutter apparatus according to claim 1, wherein the obstacle detection and be Rukoto by detecting the overload of the time of the closing operation.

When the lowermost end of the shutter curtain is lower than the position where the light emitter / receiver is provided, the result is a non-detection state. As a result, the light emitter / receiver constituting the obstacle detecting means can be brought closer to the shutter core. Assuming that a shutter curtain with an inverted T-shaped seat slat at the lowermost end was used, although the accuracy could be detected, an obstacle was mistakenly detected when the seat slat passed the projector / receiver position. Therefore, a smooth closing operation can be performed.
In addition, even if the first obstacle detection means becomes in the non-detection state, the obstacle detection by the second obstacle detection means is continued, and the closing operation without the obstacle detection is performed. There is no end.
Further, 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 detection means becomes the non-detection state. Can be supplemented.

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 mounted outdoors, and (B) is an enlarged horizontal sectional view of the main part. 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 building, and 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 inverted T-shaped seat plate slat 1b is connected, the fitting portion of the seat plate slat 1b to the guide rail 4 is notched, and the shutter curtain 1
It is wound around a winding drum 2 arranged at the upper end of the opening, and the opening is opened and closed while being guided by guide rails 4 provided on the left and right of the opening based on forward / reverse driving of the opening / closing machine 3. These are all the same as before.

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. Piece 8a
The guide rail 4 is attached to the first base half portion 8 attached to the housing 6 side by attaching the second base half portion 8 attached to the guide rail 4 to the first base half portion 7. In the fitted state, the guide rail 4 is fixed by fixing the left and right outer side pieces 7c and 8c of the first and second base half portions 7 and 8 via the fixing member 9 in a state of facing the inner side from the outer side in the left and right direction. Enclosure 6
In this way, the guide rail 4 is set so that it cannot be removed from the outdoor side, and security is taken into consideration.

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, which are generally known, can be used.
0 and 11 are respectively 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. The light emitters / receivers 10 and 11 are 1 if necessary.
In addition to the set, a plurality of sets such as two sets can be provided, and in that case, the installation height from the floor surface FL is set to an appropriate height as necessary, for example, lower or higher than the installation height. Can be installed.

Since the procedures for attaching the light emitters / receivers 10 and 11 to the base material 5 are the same, the light projector 10
An example of the attachment procedure will be described. First, the projector 10 is connected to the inner piece 8b of the second base half 8.
The necessary wiring 12 is placed in the second base half 8 while being assembled in a state of penetrating through the mounting hole 8d formed in the hole. 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 control unit 13 outputs a drive control command for the switch 3 based on these input signals. Next, the switch 3
The drive control command method 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 the determination of whether or not the fully-open / fully-closed position setting operation has been performed (S2) is NO and the determination of NO is made, it is further determined whether or not the fully-open and fully-closed positions are set (S2).
6) is made and 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), and if NO, a return is made if a NO determination is made. It is controlled as follows.

The mode switching operation to the fully open / fully closed position setting mode is performed by, for example, push button switch 1
4 is switched to the fully open / fully closed position setting mode, for example, when an operation such as repeating the push operation of the close button 14d three times while pushing the stop button 14s is performed. 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 open button 14u is pushed and operated, and the open button 14u is released when the wide portion of the seat plate slat 1b, which has an inverted T shape, comes into contact with the swallowing portion (magsa) of the shutter case.
Next, for example, the fully open position is set by pressing the open button 14u twice while pressing the stop button 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. The position blocked by the slat 1b (the height at which the projectors and receivers 10, 11 are attached (
If the seat plate slat 1b is located at a position lower than the set position, the seat plate slat 1b is located at a position lower than the set position. Obstacle detection by the light 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. Registered non-detection position (
Remember) and return.
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 / closed position setting mode, when the switching operation to the open / close drive control mode interrupts, or when a preset timer time (for example, 5 minutes) has elapsed,
The control unit 13 is set to forcibly switch to the open / close drive control 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. If the operation signal is an open operation signal, the open drive control is executed. If the operation signal is a close operation signal, the close 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, obstacle detection when the shutter curtain 1 is closed is performed.
First obstacle detection means A due to an obstacle blocking the optical axis of the light projecting and receiving devices 10 and 11, and
The second obstacle detection means B, which performs overload detection based on the fact that the obstacle hits the seat switch 1b and prevents the shutter curtain 1 from being closed, is executed in parallel. The detection 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).
Here, when the shutter curtain 1 is above the obstacle non-detection position and NO is determined, the sensitivity of the second obstacle detection means B is switched to low sensitivity (S18), and the opening / closing machine 3 Is closed (S19). 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). ,
It is determined whether or not a stop operation signal is input from the stop button 14s (S23), and if it is determined that there is a stop operation signal input, a drive stop 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. But,
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). When the determination is made, the same emergency stop (S31) and obstacle avoiding operation (S32) as those in which 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, even if the first obstacle detection means A enters the non-detection state, the second obstacle detection means B
Therefore, the obstacle detection is not continued, and the closing operation without the obstacle detection is not performed.

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. For,
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 12b is a guide groove 12
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 the guide rail 12 is attached to the outdoor side attachment surface 6a of the housing 6 (FIG. 8 (A
)), The housing-facing piece 13a of the auxiliary bracket 13 is fixed to the housing 6 via a fixing member 9 such as a screw with the upright piece 13b positioned on the opening side, and then one of the guide rails 12 In a state where the projector 10 (or the light receiver 11) is attached through the mounting hole 12d drilled in the leg portion 12b, the one leg portion 12b is brought into contact with the upright piece 13b while being applied from the opening side. At this time, the projector 10 (or the light receiver 11) is notched 13c formed in the upright piece 13b.
In this state, one leg portion 12b and the upright piece 13b are fixed via the fixing member 9 so that the assembly on the outdoor side with respect to the housing 6 of the guide rail 12 can be performed. In this case, the mounting members of the light emitters / receivers 10 and 11 are guide rails 12,
Specifically, it becomes one leg portion 12 b of the guide rail 12.

Moreover, in this thing, when the guide rail 12 is what 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 is
After the standing piece 13b is positioned on the groove bottom side of the guide groove portion 12a, it is fixed to the housing 6 via a fixing member 9 such as a screw, and then is projected into a mounting hole 12d formed in one leg portion 12b of the guide rail 12. 10 (or the light receiver 11) is attached in a penetrating manner, and the other leg portion 12c is placed on the upright piece 1
3b is fixed to the housing 6 of the guide rail 12 by fixing it via the fixing member 9, and the mounting member for the light emitters / receivers 10 and 11 in this case is the guide rail 12 Specifically, one leg portion 12b is formed.

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. A second piece 1 that is bent and welded 15c with its tip end in contact with the groove bottom piece of the guide groove 14a.
5b and is integrally formed.
And the guide rail 14 is attached to the outdoor side attachment surface 6a of the housing 6 (FIG. 9).
(A)), after welding 14e of the bent piece 14c of the guide rail 14, the first piece 15a of the auxiliary bracket 15 is applied to the housing side attachment surface 6a and welded 15d.
The guide rail 14 is attached to the housing side by welding 15c at the contact portion between the second piece 15b and the guide groove 14a in a state where the tip of the second piece 15b is applied to the groove bottom piece of the guide groove 14a. Can do. 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 bent piece 14c of the guide rail 14 is the same as described above.
14d, 15d of the first piece 15a of the auxiliary bracket 15, and 15c of the second piece 15b and the guide groove 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.

(Appendix)
The invention of Supplementary Note 1 includes a guide rail that is attached to a mounting surface on the outdoor side or indoor side of a housing, a shutter curtain that is fitted in a guide groove of the guide rail and is opened and closed, and the shutter curtain is wound. In an architectural electric shutter device comprising a winding drum and an opening / closing device for opening and closing the winding drum, an obstacle detecting means for detecting an obstacle when the shutter curtain is closed is projected and received. In the construction using the instrument, the projector / receiver is provided on an attachment member interposed between the guide rail and the chassis attachment surface in order to attach the guide rail to the chassis side. Electric shutter device for use.
According to the second aspect of the invention, the obstacle detection means configured by the 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 signal. It is characterized in that there is provided a non-detection setting means for ignoring or stopping the obstacle detection by the means when the lowermost position of the shutter curtain is at least lower than the position where the light emitter / receiver is provided, so that it is not detected. The electric shutter device for building according to claim 1.
According to the third aspect of the present invention, the obstacle detection unit is configured to detect an obstacle by detecting an overload during the closing operation, in addition to the first obstacle detection unit including the light projecting and receiving device. An obstacle detection means is provided, and 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.
The invention according to appendix 4 is such that the second obstacle detection means switches the sensitivity of obstacle detection 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. 4. The architectural electric shutter device according to claim 3, wherein the electric shutter device is set.

(Additional effects)
With the invention of Supplementary Note 1, the light emitter / receiver constituting the obstacle detection means can be brought closer to the shutter core, and the light emitter / receiver can be provided with a guide rail guide groove while being able to detect with higher accuracy. Since it is provided on a mounting member necessary for mounting on 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 is reduced. In addition, it is easy to assemble, and is not exposed to the outside of the guide rail, so that it is possible to prevent an object from colliding and being damaged.
According to the second aspect of the present invention, the obstacle detecting means by the light projecting / receiving device becomes a non-detecting state when the lowermost end of the shutter curtain is lower than the position where the light emitting / receiving device is provided. As shutter curtains with letter-shaped seat slats were used,
When the seat slat passes through the position of the light projecting / receiving device, an obstacle is not erroneously detected and stopped, and a smooth closing operation can be performed.
By making the invention of Supplementary Note 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 becomes undetected. The closing operation at is not performed.
According to the invention of Supplementary Note 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 can be supplemented that the detection means is in a non-detection state.

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 (2)

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. In this case, the obstacle detection means configured by the light projector / receiver outputs an obstacle detection signal to a control unit that controls opening and closing of the switch, and the control unit includes an obstacle detection unit that detects an obstacle by the obstacle detection unit. Non-detection setting for object detection when the lowermost position of the shutter curtain is lower than at least the position where the light emitter / receiver is installed, and is ignored or stopped and not detected. It is provided,
The obstacle detection means is provided with a second obstacle detection means in addition to the first obstacle detection means constituted by the projector / receiver.
The second obstacle detection means is configured to continue the obstacle detection even when the first obstacle detection means is in a non-detection state, and the lowermost position of the shutter curtain is provided with at least a projector / receiver. An architectural electric shutter device characterized in that the sensitivity of obstacle detection is set to be switched to a high sensitivity when the position is lower than the set position . The second obstacle detection unit electrical shutter device for construction according to claim 1, wherein the obstacle detection and be Rukoto by detecting the overload of the time of the closing operation.

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