JP3451523B2 - Electric Shutter Equipment for Construction - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of an electric shutter device for construction arranged in an opening or the like of a building.

[0002]

2. Description of the Related Art Generally, there is an electric shutter device for construction which is configured to wind and unwind a shutter curtain by rotating a winding shaft (winding wheel) based on forward and reverse driving of an electric motor. However, some of these require a locking device in consideration of crime prevention and the like. As such a locking device, there is a locking device in which a brake device is provided in an electric motor and the opening of the shutter curtain is restricted by the braking force when the motor is stopped. A motor is needed. On the other hand, a simplified electric motor without a brake device may be used, and in this case, some locking means is required. As such locking means, a shutter is provided on the shutter curtain so that it can be retracted and retracted, and the latch is operated by retracting the latch.
A mechanical locking means for unlocking is known. However,
This product has to be locked and unlocked manually each time, so if you forget to lock or unlock it, and if you open the shutter curtain in the locked state, the electric motor is powered and the shutter curtain is opened. Is not released, the electric motor continues to be overloaded,
Finally, there is a problem that the electric motor is burned. Therefore, it is proposed to automatically lock / unlock in association with the opening / closing operation. And as what was carried out in a mechanical configuration, for example, the seat plate provided at the lowermost end of the shutter curtain is separated into upper and lower two stages,
These are connected to each other via a link mechanism with a latch so that they can be freely separated and contacted, and the latch is unlocked-displaced to a locked position in accordance with the link operation based on the separation and contact of the upper and lower seat plates. It is known that it can be locked. Also,
There is also known an electric configuration in which a latch is connected to a solenoid valve that operates in association with opening / closing operation to enable automatic locking / unlocking operation.

[0003]

However, in the former case where the seat plate is separated, if the upper part of the shutter curtain above the seat plate is forcibly lifted to separate the upper and lower seat plates from each other, there is a risk that the seat may be unlocked. This is a problem, and in the latter case that uses a solenoid valve, it is necessary to consider the waterproofing of the solenoid valve part and the wiring treatment up to the part where the solenoid valve is installed, which inevitably increases the cost. In addition, there is a problem that the solenoid valve is generally installed in a released posture when energized and in a locked posture when not energized.In this case, in case of wanting to open and close the shutter curtain in the event of an abnormality such as power failure, There is a problem that the device for unlocking the solenoid valve is additionally required, the structure is not allowed to be complicated, and the cost is increased, and there is a problem to be solved by the present invention. Furthermore, in the conventional electric shutter device, switches for opening and closing the shutter curtain are provided on the side of the body, and wiring work between these switches and the control panel that controls the opening and closing of the electric motor is done. However, the construction has to be carried out at each construction site of the electric shutter for construction, which complicates the work and raises the cost, which is also a problem to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances in order to solve these problems, and is based on an electric motor and a forward and reverse drive of the electric motor. A shutter shutter for winding and unwinding a shutter curtain, the building shutter device being provided with a lock receiving portion at a portion of the winding shaft end where the shutter curtain is not wound. ,
On the skeleton side, a locking tool that is displaceable between a locking posture in which it is engaged with the locking receiving portion and an unlocking posture in which it is released, and a locking operation tool for performing a locking-unlocking operation of the locking tool. In the configuration of displacing the locking tool between the locking posture and the unlocking posture in synchronization with the operation of the locking manipulation tool,
In the locked posture, the rotation of the winding shaft on the winding side is restricted and locked, but the rotation on the unwinding side is allowed .
The lock operation tool and the electric motor opening / closing drive switch are
Closing the closing drive switch in synchronization with the locking operation of the lock operation tool
And to close the opening drive switch in conjunction with the unlocking operation
These are electric shutter devices for construction, which are linked together . Thus, even if the locking tool is in the locking position, the shutter curtain can be closed when necessary, and the locking-unlocking of the locking tool is automatically performed along with the closing and closing operation of the shutter curtain. Thus, it is possible to avoid forgetting to unlock and lock. Further, in this, the locking tool and the opening / closing drive switch of the present invention are
It can be arranged on a bracket for rotatably supporting the winding shaft, and by doing so, electrical wiring work can be performed in advance in a factory. Furthermore, in this, in the locking operation tool of the present invention, both of the opening and closing drive switches are opened between the open position where the open drive switch is closed and the closed position where the close drive switch is closed. and shall stop position of the drive stop of the electric motor is provided, the a locking operation member and locking member, it can also be provided with interlockingly connected so as to be locked position at the stop position of the locking operation member, also , Electric motors, forward / reverse driving of said electric motors
Winding and unwinding of the shutter curtain based on movement
A shutter device for architecture constructed with a take-up shaft
The shutter curtain at the end of the winding shaft
While the lock receiving part is formed on the part that is not wrapped, the body side
The, has been released with the locking position engaged with the facilities lock receiving portion
And a locking tool that is displaceable depending on the unlocking posture, and the locking of the locking tool-
A locking operation tool for performing an unlocking operation, and the locking operation
Change the locking tool between locked and unlocked position in conjunction with the operation of the tool.
The locking tool is in the
The rotation of the winding shaft on the winding side is restricted by force and locked,
Rotation on the unwinding side is allowed and the locking operation is performed.
The tool has an open position to close the open drive switch and a closed drive.
Opening and closing drive between the closed position to close the switch for
Stops the drive of the electric motor by opening all of the switches for
Locking operation tool and locking
Connect the tool to the locked position at the stop position of the locking operation tool.
They are dynamically linked, and by doing this,
When the shutter curtain is stopped halfway, manual opening of the shutter curtain is restricted but manual closing is allowed.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, referring to FIG.
~ It demonstrates based on the drawing of FIG. In the drawings, 1
Is a shutter curtain of an electric shutter arranged in an opening of a building or the like, and the shutter curtain 1 is wound around a winding shaft 2 which is rotatably supported above a frame, and which has an electric motor 3 The opening and closing of the opening is performed by winding the winding shaft 2 on the basis of the forward and reverse driving and rotating the unwinding. Reference numeral 4 is a guide rail provided on both sides of the opening for guiding both sides of the shutter curtain 1, and 5 is a shutter case arranged on the skeleton side for housing the winding shaft 2.

In the present embodiment, the winding shaft 2 is formed as a cylindrical winding wheel, and is integrally supported by a pair of left and right mounting brackets 6 and 7 supported in the shutter case 5. The support shaft 2a and the electric motor 3 are rotatably fitted on the outer shaft. The take-up wheel 2 is linked to the output shaft 3a of the electric motor 3 so that the take-up wheel 2 can be wound and unwound based on forward and reverse driving of the electric motor 2. 8
Is a balance bullet, and one end of the balance bullet 1 is fixed to the winding wheel 2 side, and the other end is fixed to the winding support shaft 2a side. It is set to balance the stored power of the balance ammunition 8.

By the way, of the pair of left and right mounting brackets 6 and 7, one (right side in FIG. 1) of the mounting bracket 7 is box-shaped by a pair of left and right first and second plate members 7a and 7b. Are formed on the
The motor bracket 3b that supports the electric motor 3 is
The second plate 7 is inserted through the shaft hole 7c formed in the first plate 7a located on the winding wheel 2 side into the box.
It is fixed to the b side. Here, the shaft hole 7c is set to have a smaller diameter than the outer diameter of the winding wheel 2, and is set so that the right end of the winding wheel 2 closely faces the outer edge portion of the shaft hole 7c. Further, a notch 7d is formed at the outer edge of the upper portion of the shaft hole 7c and is largely notched so as to exceed the outer diameter of the winding wheel 2. On the other hand, the outer peripheral portion of the winding wheel 2 on the right end has a grooved locking receiving portion 2c for engaging a locking tool 9 described later in a disengageable manner.
Is recessed.

The locking tool 9 is formed in a semi-ring shape having an inner diameter substantially equal to the hole diameter of the shaft hole 7c, and is inside the box formed by the first and second plate members 7a and 7b. It is arranged along the shaft hole 7c. And
The lower end portion of the locking tool 9 is formed with a pair of front and rear mounting pieces 9a. The mounting pieces 9a are provided on the second plate member 7b so as to face the lower side of the shaft hole 7c and to support the locking tool. By being pivotally attached to the attachment piece 10a via the pin shaft 10b, the locking tool 9 can swing left and right with the pin shaft 10b as a swing fulcrum. On the upper portion of the locking tool 9, an inclined surface portion 9 that protrudes in an inclined shape toward the winding wheel 2 side.
b, and a regulation surface portion 9 extending on the inclined surface portion 9b and bent to be orthogonal to the rotation direction of the winding wheel 2.
A lock portion 9d composed of c and c is formed, and the lock portion 9d faces the first cutout portion 7d on the side of the winding wheel 2 that is largely cut out. And locking tool 9
Is urged to swing to the winding wheel 2 side by the other end of the attitude-restoring ammunition (a leaf spring is adopted in this embodiment) 11 having one end fixed to the second plate member 7b. Accordingly, in the locking tool 9, the lock portion 9d projects from the cutout portion 7d, that is, the locking portion 9d projects from the inside of the box of the mounting bracket 7 and the locking receiving portion 2c of the winding wheel 2 is provided.
However, as will be described later, when the locking tool 9 swings against the biasing force of the attitude-restoring ammunition 11, the lock portion 9d is set inside the box, as will be described later. It is set to change into an unlocked posture to retract.
Reference numeral 9e denotes a rear side formed by bending the locking tool 9 from the rear portion in the left-right direction, and a guide pin 9f is provided on the rear side 9e so as to project rearward.

By the way, the locking tool 9 is set so as to be in a locking posture in association with a drive stopped (neutral) state of the electric motor 3 and a closing operation state, as will be described later, but in the locking posture, The engagement state between the lock portion 9d and the lock receiving portion 2c of the winding wheel 2 is set as follows. That is, although the plurality of lock receiving portions 2c are provided in the circumferential direction as shown in FIG. 4 or 5, one of the lock receiving portions 2c is formed in the regulation groove side 2d in which one groove side faces in the radial direction and the other. The groove side is formed as an inclined groove side 2e. Then, when the take-up wheel 2 tries to rotate in the take-up direction (direction of arrow X) in the state where the lock portion 9d is engaged with the engagement receiving portion 2c, when the take-up wheel 2 tries to rotate in the take-up direction (arrow X direction), the lock portion regulation surface portion 9c and the regulation groove side 2d faces each other and is regulated to rotate in the winding direction. On the other hand, when the take-up wheel 2 tries to rotate in the unwinding direction, it is set so that the lock surface 9d and the inclined groove side 2e face each other and are allowed to rotate in the unwinding direction. ing.

Further, inside the box-shaped mounting bracket 7, there are arranged open / close drive switches 13 and 14 for opening / closing the electric motor 3, and these open / close drive switches 13 and 14 are provided. In the present embodiment, similar microswitches are used. Then, the switches 13 and 14 are switched from the rectangular switch boxes 13a and 14a to the switch contacts 13b and 1 respectively.
4b is projected, but the switch levers 13c and 14c for pushing the switch contacts 13b and 14b to perform an ON operation (sensing operation) are displaced. That is, both of the switches 13 and 14 are fixed to the switch support plate 15 disposed on the upper portion of the second plate member 7b, but the open / close drive switches 13 and 14 are the other ends of the switch levers 13c and 14c. The parts project rearward and are arranged side by side in the left-right direction in a posture of facing each other,
Further, the opening drive switch 13 is displaced to the upper side, and the closing drive switch 14 is displaced to the lower side. As a result, the switch levers 13c and 14c have an open drive state in which only the open drive switch 13 is turned on in accordance with the vertical displacement of an operation pin 18a, which will be described later, which is provided opposite thereto, and the open / close drive switch 13, It is set so that three kinds of switches can be switched between a stopped state in which both 14 are turned off and a closing drive state in which only the closing drive switch 14 is turned on.

Reference numeral 16 denotes a slider corresponding to the locking operation tool of the present invention. The slider 16 faces the rear side 9e of the locking tool and is provided on the rear side 7 of the mounting bracket 7.
e. The slider 16 is fixed to the rear side 7e by the pin 16b through the elongated holes 16a formed in the upper and lower portions, and thus can slide up and down by the elongated hole stroke with respect to the rear side 7e. Is set. At the center of the rider 16, a locking tool guide 17 that guides the left and right swing of the locking tool 9 is fixed, and a guide surface 17a, which is formed by cutting out on the second plate member 7b side of the locking tool guide 17, Guide pin 9 protruding rearward of the locking tool 9
f is set to engage from the second plate member 7b side. Here, the guide surface 17a is notched in two steps, and when the guide pin 9f is engaged with the lower first step portion 17b, the locking tool 9 has the lock portion 9d in the posture returning ammunition 11.
It is set such that it transforms into an unlocked posture in which the mounting bracket 7 is retracted into the box while resisting the urging force of. On the other hand, the slide guide 17 slides downward,
The second step portion 17c in which the guide pin 9f extends from the middle portion to the upper side
In the state of being engaged with, the locking tool 9 is set so as to be in the locking posture in which the lock portion 9d projects from the inside of the box of the mounting bracket 7 under the biasing force of the posture restoring ammunition 11. On the other hand, a substantially L-shaped operating arm 18 extends from the upper portion of the slider 16, and the operating arm 18
The operating pin 18a is supported at the tip of the. Then, as the slider 16 slides up and down to transform the locking tool 9, the opening / closing drive switches 13 and 14 are set to switch among the three types. Reference numeral 16c is a return bullet mounted between the upper portion of the slider 16 and the mounting bracket 7, and the return bullet 16c returns the slider 16 to the upper position. The coil ammunition is adopted in.

Further, a connecting member attachment side 16d is integrally formed on the lower portion of the slider 16, and the connecting member (wire is adopted in this embodiment) is formed there.
One end of the connecting member 19 is connected, but the other end of the connecting member 19 is connected to an operating tool 20 for opening / closing operation located below the mounting bracket 7, and an operating tool 20 to be described later.
The slider 16 is set to be vertically displaced based on the displacement of the connecting member 19 when the connecting member 19 is moved up and down based on the operation. Incidentally, 10c is a guide piece for guiding the connecting member 19 extended from the operation tool 20 to the slider 16 side.

The operation tool 20 has a structure in which an operation tool bracket 21 is fixed to a switch panel 20a fixed to the body side, and an operation knob 22 is vertically movably fitted to the operation tool bracket 21. Has become. And operation knob 2
On the rear surface of the second cam body 23, a cam body 23 having three recesses 23a, 23b and 23c formed in the vertical direction on the left and right side surfaces is integrally fixed. On the other hand, the operation tool bracket 21
The base ends of the pair of left and right support arms 24 are pivotally supported at their lower parts, and the regulation rollers 24a pivotally supported at the tip ends of the support arms 24 are provided at the cam body recesses 23a, 23b, respectively. It is configured so as to engage with any of 23c from both sides. Then, in both support arms 24, the regulation roller 24a is pushed into each concave portion 23a by the urging force of a holding ammunition (a coil ammunition is adopted in the present embodiment) 24b which is interposed to hold the middle parts. 23b, 23c
It is urged to engage and hold with respect to.
By operating the operation knob 22 to be vertically displaced, the regulation roller 24a moves over the mountain between the adjacent recesses 23a, 23b, 23c against the urging force of the holding ammunition 24b. The knob 22 is positioned in any one of an attitude in which the regulating roller 24a engages with the lower recess 23c, a position in which the regulation roller 24a engages with the intermediate recess 23b, and a attitude with which the regulation roller 24a engages with the upper recess 23a. It is set to be retained. The other end of the connecting member 19 is connected to the upper part of the cam body 23, and based on the movement of the connecting member 19 that is interlocked with the displacement of the operation knob 22 to the open, stop, and closed posture positions. As described above, the slider 16 is set to be displaced to the open position located above, the stop position located in the middle part, and the closed position located below. Here, in holding the operation knob 22 in each posture, the biasing force of the return bullet 16c on the slider 16 side is the holding bullet 24b on the support arm 24 side.
It is set to be smaller than the urging force of.

Thus, when the operation knob 22 is operated in the open position, the slider 16 is located at the open position, and in this state, the first step portion 17b of the slide guide 17 engages with the locking tool guide pin 9f. Accordingly, the locking tool 9 is set to the unlocked posture, and the operating pin 18a is set to turn on the opening drive switch 13 to open the electric motor 3. Further, when the operation knob 22 is operated to the stop posture, the slider 16 is positioned at the stop position, and in this state, the second step portion 17 of the slide guide 16 is provided.
c engages with the locking tool guide pin 9f, whereby the locking tool 9 is in the locking posture, and the operating pin 18a stops the driving of the electric motor 3 without turning ON the opening / closing driving switches 13 and 14. Is set to do.
Furthermore, when the operation knob 22 is operated in the closed posture,
The slider 16 is located at the closed position, and in this state, the second step portion 17c of the slide guide 17 is engaged with the locking tool guide pin 9f, whereby the locking tool 9 is in the locking posture and the operating pin 18a is moved. The closing drive switch 14 is turned ON to open the electric motor 3.

Next, since the opening / closing drive circuit of the electric motor 3 uses a general-purpose circuit that is usually adopted, its details will be omitted, but the relationship with the present invention will be briefly described. The electric shutter of the present embodiment is provided with necessary switches such as a lower limit (fully closed), an upper limit (fully open) limit switch and an obstacle detection switch (not shown) in addition to the opening / closing drive switches 13 and 14. When the operation knob 22 is operated in, for example, a closed posture, the operation knob 22 remains in the closed posture, and in this state, the electric motor 3 is driven to close as described above and the shutter curtain 1 is closed. Is set so that the electric motor 3 is stopped based on the detection operation of the lower limit switch accompanying the shutter curtain 1 being fully closed. Then, in the fully closed state, if the operation knob 22 is not operated to the special stop position, the operation knob 22 remains in the closed posture, but in this state, the locking tool 9 is maintained in the locked posture. On the other hand, when the operation knob 22 is operated in the open position, the opening operation is performed until the upper limit switch is detected as described above. In this fully opened state, the locking tool 9 is in the unlocked attitude, When there is a power outage due to a fire or the like, the shutter curtain 1 can be pulled to manually close it. Further, when the operation knob is operated to the stop position (for example, to bring it into the halfway open state), the electric motor 3 is stopped. In this state, however, the locking tool 9 is in the locking posture, and in this case as well, a power failure occurs. In such a case, the closing operation can be manually performed, but the opening is restricted.

In the embodiment of the present invention configured as described above, the shutter curtain 1 is operated by vertically moving the operation knob 22 provided on the body side to any one of the open, stopped and closed positions. Opening, stopping, and closing are performed, but in this case, it is possible to automatically transform the locking tool 9 into the locking posture and the unlocking posture in connection with operating the operation knob 22. Therefore, you will never forget to lock or unlock. Moreover, in this structure, since the locking tool 9 has a mechanical structure for locking and unlocking based on the connecting member 19 which is moved by the operation of the operation knob 22, an electrically-operated locking tool is used. It can be carried out at a low cost without becoming expensive as in the case where it is used. Moreover, since the locking tool 9 is configured to lock the take-up wheel 2 in this structure, the shutter is lifted to unlock like a conventional seat plate having two steps to provide the locking tool. There is no such problem.

Further, in the embodiment of the present invention, the opening / closing drive switches 13 and 14 of the electric motor 3 are provided on the mounting bracket 7 located on the upper part of the body near the electric motor 3 and provided on the body side. Since the operation tool 20 and the mounting bracket 7 to be connected are connected via the connecting member 19 that moves in association with the operation knob 22, the electric shutter is assumed to have been subjected to all electrical wiring work. Since it can be shipped from the factory, there is no need for wiring work at the construction site, unlike the case where the operation switch is provided on the side of the body on the side of the opening. As a result, on-site construction work can be simplified, workability can be improved, and cost can be reduced.

Moreover, in the case of an abnormality such as a power failure,
When the shutter curtain 1 in the fully closed state is to be opened, and when the operation knob 22 is operated in the closed position or the stopped position, the lock knob 9 is unlocked by operating it toward the open position. The shutter curtain 1 can be placed in the posture, and by doing so, the shutter curtain 1 can be manually opened, so that the locker can be easily unlocked without providing an emergency release device for the locker unlike the conventional electric structure. 9 unlocking operations are possible.

The present invention is not limited to the above-mentioned embodiment, and the locking tool is set to the unlocked posture instead of the locked posture when, for example, the operation knob is set to the stop position. In this case, the shutter curtain in the halfway open position can be manually opened, but these settings are selected as necessary. Furthermore, in the case where it is not necessary to stop halfway, it can be executed as it is by omitting the configuration related to the stop position from the above-mentioned embodiment.

[Brief description of drawings]

FIG. 1 is an overall front view showing an outline of an electric shutter device.

FIG. 2 is an inner side view of a right side mounting bracket.

FIG. 3 is a front view of a right side mounting bracket.

FIG. 4 is a plan view of a right side mounting bracket.

FIG. 5 is a left side view illustrating a locked state of the locking tool.

FIG. 6 is a front view illustrating a locked state of the locking tool.

FIG. 7 is a right side view showing an assembled state of the left and right plate members of the right mounting bracket.

8 (A), (B), and (C) are a side view, a front view, and a plan view of a locking tool, respectively.

9 (A), (B), and (C) are a side view, a front view, and a plan view, respectively, of a locking tool support plate.

10A and 10B are a side view and a front view of a slider, respectively.

FIG. 11 is a front view of the operating tool.

FIG. 12 is a side sectional view of an operating tool.

FIG. 13 is a rear view of the operation tool.

FIG. 14 is a bottom view of the operation tool.

[Explanation of symbols]

1 Shatter curtain 2 Winding shaft (winding wheel) 2a spindle 2c Engagement receiving part 3 electric motor 7 Right mounting bracket 7a First plate material 7d cutout 7 8 Balance ammo 9 Locking tool 9d Lock part 10 Support plate for locking tool 11 Attitude return ammunition 13 Open drive switch 16 slider 17 Locking tool guide 18 Working arm 18a operating pin 19 Connecting material 20 controls 22 Operation 23 cam body 24 Support arm

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadashi Sasaki 2-1-1, Nishishinjuku, Shinjuku-ku, Tokyo Sanwa Shatter Industry Co., Ltd. (72) Inventor Haruo Warashina 2-chome, Nishishinjuku, Shinjuku-ku, Tokyo No. 1 Sanwa Shutter Industry Co., Ltd. (72) Inventor Akira Furuyano 1-1-1 Nishishinjuku, Shinjuku-ku, Tokyo Sanwa Shatter Industry Co., Ltd. (56) Reference JP-A-62-288287 (JP, A) ) Actual development Sho 59-44897 (JP, U) Actual development flat 6-24197 (JP, U) Actual development flat 6-63798 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E06B 9/80

Claims (4)

(57) [Claims] 1. A building shutter device comprising an electric motor and a winding shaft that winds and unwinds a shutter curtain based on forward and reverse driving of the electric motor. While forming a lock receiving part in a portion where the shutter curtain of the part is not wound, on the body side, a locking tool that is displaceable between a locking position engaged with the locking reception part and an unlocked position released. A locking operation tool for performing an unlocking-unlocking operation of the locking tool, wherein the locking tool is configured to be displaced between a locking position and an unlocking position in association with the operation of the locking operation tool. locking device, together with the take-up side of the rotation of the winding shaft in locked position it will be locked by regulations, the rotation of the unwinding side configured to permit, locking operation
The tool and the opening / closing drive switch for the electric motor are the locking operation tools.
It is unlocked by closing the closing drive switch in conjunction with the locking operation of
To close the open drive switch in conjunction with the operation,
An electric shutter device for construction that is connected together . 2. The electric shutter device for construction according to claim 1, wherein the locking tool and the opening / closing drive switch are arranged on a bracket for rotatably supporting the winding shaft. 3. An apparatus according to claim 1 or 2, locking operation tool is in between a closed position for closing the open position and a closed drive switch for closing the opening drive switch, both of the opening and closing drive switch An electric shutter device for construction is provided in which a stop position for opening and stopping the drive of the electric motor is provided, and the locking operation tool and the locking tool are interlockingly connected so as to be in the locking posture at the stop position of the locking operation tool. 4. An architectural shutter device comprising an electric motor and a winding shaft that winds and unwinds a shutter curtain based on forward and reverse driving of the electric motor. While forming a lock receiving part in a portion where the shutter curtain of the part is not wound, on the body side, a locking tool that is displaceable between a locking position engaged with the locking reception part and an unlocked position released. A locking operation tool for performing an unlocking-unlocking operation of the locking tool, wherein the locking tool is configured to be displaced between a locking position and an unlocking position in association with the operation of the locking operation tool. The locking tool locks by restricting the rotation of the winding shaft on the winding side in the locking posture, but allows the rotation on the unwinding side , and the locking operation tool closes the opening drive switch. Close the open position and the closing drive switch Between the closed position and the closed position, there shall be provided a stop position for opening and closing all of the opening / closing drive switches to stop the drive of the electric motor, and lock the lock operation tool and the lock operation tool at the stop position of the lock operation tool. An electric shutter device for construction that is interlocked and linked so that it is in a locked position.