JP2002089158A - Braking device for opening/closing body in opening/closing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow instantaneous recovery of a braking device in an emergency. SOLUTION: The braking device 25 for an opening/closing body in an opening/closing apparatus, interlocks a shutter curtain 7 with a switching machine 9 when moved in one direction, and separates the former from the latter when moved in the other direction, to thereby stop the operation of the shutter curtain 7. The braking device 25 is comprised of a brake releasing lever 33, a spring 35, a latch 39, and an electromagnetic plunger 31. The brake releasing lever 33 is movably supported and connected to an input portion 21 of the switching machine 9. The spring 35 energizes the brake releasing lever 33 in the other direction. The latch 39 engages with the brake releasing lever 33 when the brake releasing lever 33 is moved to one location, to thereby restrict the movement of the brake releasing lever 33. The electromagnetic plunger 31 moves the latch 39 in a direction that releases the engagement of the latch 39 upon inputting of a brake recovery signal, whereby the brake releasing lever 33 is moved in the other direction by an energizing force of the spring 35.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking device for an opening / closing member in an opening / closing device such as a shutter device for closing at least an opening of a structure such as a building. The present invention relates to a braking device for an opening / closing body in an opening / closing device that instantaneously returns a brake.

[0002]

2. Description of the Related Art Conventionally, a shutter device installed in a building for entrance and exit of buildings such as stores and warehouses and a compartment for disaster prevention has been used for fires, power failures, and the like occurring in the building where the shutter device is installed or in the vicinity thereof. In an emergency, an automatic closing device that closes an open shutter curtain may be used in order to minimize spread of fire or damage to other parts.

In this type of automatic closing device, a braking device is provided in a switch that opens and closes a shutter curtain.
Normally, the braking device restricts the free rotation of the switch to keep the shutter curtain open, and in an emergency, releases the braking state of the braking device and lowers the shutter curtain by its own weight. .

For example, in an automatic shutter closing device disclosed in Japanese Patent Application Laid-Open No. 7-82974, when an electric motor of a braking device is rotated in an emergency such as a fire or a power failure, a pull wire is wound around a winding shaft. The shutter curtain is released, the brake state is released, and the fully opened shutter curtain starts to descend by its own weight.

On the other hand, when the shutter curtain is stopped again during its own weight descent, DC power is supplied to the DC solenoid of the braking device, and the projecting / retracting rod of the DC solenoid engages with the locking claw and the ratchet gear. And cancel the winding to make the winding shaft freely rotate. This allows
The tension of the pull wire is released, the braking device returns to the braking state again, and the self-weight drop of the shutter curtain is stopped.

[0006]

However, the conventional opening / closing body braking device supplies DC power to the DC solenoid of the braking device when the shutter curtain is lowered and stopped, that is, when the brake is returned, and the winding shaft is driven. By releasing the tension of the pull wire,
Since the braking device was returned to the brake state again and the self-weight drop of the shutter curtain was stopped, the return to the brake state was performed by an inactive operation of releasing the tension of the pull wire, and the return speed was reduced. It depended on the transition to a relaxed state. From this, when returning to the brake state, it takes time until the shutter curtain actually stops, and for example, if there is an obstacle, the obstacle may be damaged, There was a risk that a load was applied to the switchgear.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a braking device for an opening / closing body in an opening / closing device capable of instantaneously returning a brake of a braking device in an emergency.

[0008]

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments. The opening / closing body braking device 25 in the opening / closing device according to claim 1 of the present invention, when moved to one side, interlocks and connects the opening / closing body 7 and the switch 9 and when moved to the other side, the opening / closing body 7 and the An opening / closing body braking device 25 in an opening / closing device that disconnects the opening / closing device 9 and stops the operation of the opening / closing body 7.
, The input unit 2 of the switch 9
A lever 33 for biasing the brake release lever 33 connected to the lever 1 and biasing means 35 for biasing the brake release lever 33 to the other side;
A movement restricting member 39 which is locked to the brake release lever 33 at one of the movement positions of the brake release lever 33 and restricts the movement of the brake release lever 33; And an electromagnetic plunger 31 for moving the brake release lever 33 to the other side by the urging force of the urging means 35.

In the braking device 25, the movement restricting member 39
Is released, the brake release lever 33 is quickly moved to the other side by the urging force of the urging means 35.
Thereby, the force to the other is input to the switchgear 9, and the brake is instantaneously returned, and the switchgear 7 can be stopped.

The brake device 25 for the opening / closing body in the opening / closing device according to the second aspect includes an electric motor 29 for rotating a drive shaft 29a in response to an input of a brake release signal.
9, a cam plate 41 for moving the brake release lever 33 to one side against the urging force of the urging means 35 by driving the electric motor 29 fixed to the drive shaft 29a and receiving the brake release signal. And characterized in that:

In the braking device 25, when a brake release signal is input, the electric motor 29 is rotated, and the cam plate 41 fixed to the drive shaft 29a of the electric motor 29 pushes the brake release lever 33 to the urging means 35. Move to one side against the urging force of. Therefore, the release of the brake is performed gradually with the rotation of the electric motor 29, and the power consumption at the time of release of the brake can be reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a switching device braking device for a switching device according to the present invention will be described below in detail with reference to the drawings. In this embodiment, a shutter device is used as an example of an opening / closing device to which a braking device is applied. The opening / closing body is a shutter curtain 7 formed by connecting a large number of strip-shaped slats. The building opening 3 is lowered and closed by being stored in a wound state and being rewound. 1 is a front view showing a schematic configuration of a shutter device provided with a braking device according to the present invention, FIG. 2 is a plan view showing the inside of the braking device shown in FIG. 1, and FIG. 3 is a braking device shown in FIG. It is the front view which saw through the inside of the device.

Reference numeral 1 denotes a shutter device which is an opening / closing device installed in a building opening 3. The shutter device 1 comprises:
A shutter curtain 7 is wound around a horizontally disposed shutter case 5 as a housing portion disposed above the opening 3, and the shutter curtain 7 is rotated by a switch 9 disposed on one side of the shutter case 5. Along the guide rail 11 and rewind.

The switchgear 9 is driven to rotate,
The sprocket 13 is rotated, and the sprocket 19 of the winding drum 17 is rotated via the rotation transmitting means 15 to wind the shutter curtain 7 into the shutter case 5.
A brake arm 21 as an input unit is provided at a rear part (right side in FIG. 1) of the main body of the switchgear 9. Braking arm 21
, A tip outside the switch is swingable about a swing shaft 23 provided in the switch 9.

The brake arm 21 is provided with a biasing means such as a spring (not shown), and is constantly biased in the other direction (arrow b) to maintain the brake state of the switchgear 9. And this braking arm 21 has one side (arrow a).
When the force is input, the brake of the switchgear 9 is released,
When the shutter curtain 7 is moved down (closed) and the force on the other (arrow b) is input or when the force on one (arrow a) is removed, the brake of the switchgear 9 is returned by the urging force, The lowering (closing) operation of the shutter curtain 7 is stopped. Therefore, the shutter curtain 7 is held in the shutter case 5 by the braking of the braking arm 21 in the fully opened state, and is lowered by its own weight to close the opening 3 by the braking of the braking arm 21 being released. It has become.

The switch 9 is provided with a braking device 25 for swinging the braking arm 21. The braking device 25 generally includes a housing 27 fixed to the outer surface of the switchgear 9, in the present embodiment, the upper portion, and an electric motor 29 and an electromagnetic plunger 31 fixed to the housing 27.

A brake release lever 33 is provided on the housing 27 so as to be linearly movable in the left-right direction in FIG. 2 and to which the bent portion 33a at the right end in the figure is connected to the brake arm 21 of the switch 9. I have. The brake release lever 33 is urged in the other direction (left side in FIG. 2) by a spring 35 having one end fixed to the housing 27. In this embodiment, the brake release lever 33 and the brake arm 21 are connected in a contact state.

Both ends of a horizontal locking pin 37 are fixed to the brake release lever 33. As shown in FIG. 3, the housing 27 is provided around a horizontal swing shaft 38.
A latch 39 is provided as a movement restricting member whose center is swingably supported. One end of the latch 39 serves as a locking claw 39a, and the other end is connected to a telescopic rod 31a of the electromagnetic plunger 31.

The other end (right end in the figure) of the latch 39 is normally set by the weight of the telescopic rod 31a or a built-in spring provided in the electromagnetic plunger 31 to project the telescopic rod 31a.
Are urged in the direction of being pressed downward in FIG. On the other hand, the locking claw 39a of the latch 39 abuts on the locking pin 37 in this state, and the posture is maintained in the state shown in FIG.
Therefore, when the brake release lever 33 is moved rightward in FIG. 3, the latch 39 swings after riding on the locking pin 37 and locks the locking claw 39 a with this locking pin 37. It has become. That is, the latch 39 is
To restrict the sliding movement of the brake release lever 33 at one of the moving positions in the linear direction (the right side in FIG. 2).

The electromagnetic plunger 31 is supplied with a brake return signal, which is a command from a control unit (not shown) of the shutter device, to excite the solenoid 31b to attract the telescopic rod 31a upward in FIG. It has become. Therefore, the other end of the latch 39 is lifted upward by the telescopic rod 31a by the suction of the solenoid 31a. That is, the latch 39 is swung in the unlocking direction. As a result, the brake release lever 33 is released from being latched by the latch 39, and is moved in the other linear direction (to the left in FIG. 2) by the urging force of the spring 35.

A cam plate 41 is fixed to the drive shaft 29a of the electric motor 29. As shown in FIG. 2, the cam plate 41 according to this embodiment has a pressing pin 41b projecting radially outward of a disk 41a in the same direction as the axial direction. A notch 43 is formed in the brake release lever 33, and a pressing pin 41 b of the cam plate 41 is arranged in the notch 43.

A brake release signal, which is a command from a control unit (not shown) of the shutter device, is input to the electric motor 29. The electric motor 29 to which the brake release signal is input rotates the cam plate 41 clockwise in FIG. As the cam plate 41 is rotated, the pressing pin 41b comes into contact with the notch 43 of the brake release lever 33, and the brake release lever 33 moves rightward in FIG. 2 against the urging force of the spring 35. Let it.

A small recess 4 is formed on the outer periphery of the disc 41a of the cam plate 41.
5 are formed, and the small recess 45 is provided with a limit switch 47.
Is to be detected. That is, the rotation position of the cam plate 41 is detected by the limit switch 47.

The brake release lever 33 has a recess 49 formed therein.
Is to be detected. That is, the movement position of the brake release lever 33 is detected by the limit switch 51 in one of the linear directions and the other.

Next, the braking device 25 constructed as described above will be described.
Will be described. FIG. 4 is an operation explanatory diagram showing a plan view at the start of rotation of the cam plate at (a) and a front view at (b). FIG. 5 is a plan view at the start of pressing the brake release lever (a).
FIG. 6 is an operation explanatory view showing a front view as (b), FIG. 6 is an operational explanatory view showing a plan view when the latch is locked, and FIG. FIG. 8A is an operation explanatory diagram showing a planar view as (a) and FIG. 8B is an operational explanatory diagram showing a front view as (b), and FIG. 8 is an operational explanatory diagram showing a front view as (b) when releasing latch engagement. .

When the shutter device 1 is open, the shutter curtain 7 is wound around the shutter case 5. In this state, the braking device 25, as shown in FIG.
The brake release lever 33 is disposed on the left side in the figure, and the brake arm 21 is disposed on the other side (left side in FIG. 1), that is, on the other position by the urging force of the urging means provided on the brake arm 21. Have been. Thus, the shutter curtain 7 is maintained in a state of being wound around the shutter case 5, that is, a brake state.

When the shutter curtain 7 is fully opened, in the event of an emergency such as a fire, earthquake, or power outage, a non-illustrated smoke sensing device, a heat sensing device, and other disaster-prevention sensing devices, alarm devices, and the like are actuated to operate the system. The emergency department is notified of the occurrence of an emergency to a security department or nearby people. In response to a command from the department in charge of disaster prevention security or the sensing device or the alarm device via a control unit (not shown) of the shutter device or the like, electric power is supplied to the electric motor 29 of the braking device 25, for example, DC from a storage battery (not shown). When power is supplied,
The electric motor 29 is driven, and the cam plate 41 is rotated clockwise in FIG.

When the cam plate 41 is rotated and the pressing pin 41b of the cam plate 41 contacts the side of the notch 43 as shown in FIG.
1b starts the sliding movement of the brake release lever 33 rightward in the figure.

When the brake release lever 33 is moved rightward, the locking claw 39a of the latch 39 rides on the locking pin 37 of the brake release lever 33, as shown in FIG.

When the cam plate 41 is further rotated from this state, and the pressing pin 41b reaches the position shown in FIG. 6, the latch 39 applies the load of the telescopic rod 31a or the electromagnetic plunger 3 to the position shown in FIG.
The locking pawl 39a is moved to the locking pin 3 by the urging force of the spring 1
7

In the locked state by the latch 39, FIG.
As shown in (b), the locking pin 37 is locked by the locking claw 39a of the latch 39, and the brake release lever 33
Is held at the rightward movement position in the drawing with the spring 35 extended. That is, the braking device 2
5 is in this state, a force is applied to the brake arm 21 of the switchgear 9 in one direction. In other words, the force is applied to the brake arm 21 against the biasing force of the biasing member. And the switch 9 is moved to the braking arm 2.
The brake state by 1 is released, and the shutter curtain 7 in the fully open state starts to descend by its own weight.

The fact that the brake release lever 33 has reached the rightward movement position means that the detector 51a of the limit switch 51 is relatively moved outward from the recess 49 so that the limit switch 51 is turned on. Is detected. The ON signal from the limit switch 51 indicates that the brake release lever 33 has completed the normal operation, that is, that the switch 9 has been released from the brake state, via the control unit (not shown) of the shutter device 1. It is sent to the department in charge of disaster prevention and security and notified.

In this state, electric power is further supplied to the electric motor 29, and the cam plate 41 is further rotated clockwise. The rotation of the cam plate 41 causes the small recess 45 of the cam plate 41 to rotate.
Reaches the detector 47a of the limit switch 47, the limit switch 47 is turned off, and the pressing pin 41b
Is returned to the initial position, and the power supply to the electric motor 29 is cut off. As a result, the pressing pin 41b of the cam plate 41 is retracted to an initial position where it does not interfere with the notch 43 of the brake release lever 33 as shown in FIG.

That is, since the brake release lever 33 is held at the moving position by the latch 39 during the descent of the shutter curtain 7, the braking device 25 does not need to supply power for holding the brake release lever 33. Becomes

Thereafter, when the shutter curtain 7 descends under its own weight and the shutter curtain 7 is completely lowered and is fully closed, it is detected that the shutter curtain 7 such as the lower limit switch or the seat plate switch has closed the opening 3. A control unit or the like (not shown) of the shutter device receives a detection signal from a sensor or the like, and DC power is supplied to the electromagnetic plunger 31 according to a command from the control unit or the like, and as shown in FIG. 31a moves the right end of the latch 39 upward.

Accordingly, the locking claw 39a and the locking pin 37
Is released, and the brake release lever 33 is
8B is instantaneously moved to the left by the urging force of the spring 35, and is again placed at the position shown in FIG. That is,
Due to this movement, a force in one direction in the linear direction is removed from the braking arm 21 of the switchgear 9, and the braking arm 2
As a result, the opening / closing device 9 is returned to the brake state by the braking arm 21 and the shutter curtain 7 during the descending operation is moved.
Will stop instantaneously.

When an obstacle is sensed on or near the descent locus of the shutter curtain 7 during its own weight descent, a sensing signal from an obstacle sensing means such as a seat switch or an obstacle sensing sensor is transmitted to the shutter device. A control unit or the like (not shown) receives the signal, and DC power is supplied to the electromagnetic plunger 31 according to a command from the control unit or the like, and the telescopic rod 31a moves the right end of the latch 39 upward as described above. Accordingly, the engagement between the locking claw 39a and the locking pin 37 is released, and the brake release lever 33 is
8 (b) is instantaneously moved to the left by the urging force of
It is arranged again at the position shown in FIG. That is, by this movement, the force of the brake arm 21 of the switch 9 in the linear direction is released, and the control arm 21 is moved to the other by the urging force of the urging means. 21 returns to the braking state again, and the shutter curtain 7 during the descent stops instantaneously.

Thereafter, when the supply of electric power to the electric motor 29 is resumed, the cam plate 41 is rotated in the same manner as described above, and the brake release lever 33 is moved to the right again and held.
The brake state of the switchgear 9 is released, and the shutter curtain 7 is lowered to the fully closed state. The timing at which the supply of electric power to the electric motor 29 is restarted is as follows.
After the obstacle sensing means senses the obstacle, the control unit or the like (not shown) of the shutter device may use the timing at which it is recognized that the obstacle has been removed by the obstacle removal signal or the like. After recognizing that it has been removed,
For example, the timing may be a time when a preset time has elapsed by a timer such as a timer in conjunction with a control unit (not shown), and further, after detecting an obstacle irrespective of the removal of the obstacle, a control (not shown) For example, the timing may be a timing at which a time set in advance by a time measuring means such as a timer in conjunction with a unit or the like has elapsed.

As described above, in the braking device 25, when the latch 39 is released, the brake release lever 33 is quickly moved to the other side by the urging force of the spring 35.

That is, the force to the other side is input to the switchgear 9, and the brake is instantaneously returned, so that the closing operation of the shutter curtain 7 is quickly stopped. This prevents a load from being applied to the shutter curtain 7 in the closing direction, and prevents damage to the shutter curtain 7 and excessive load applied to the switch 9.

Further, since the brake is immediately returned, even if there is an obstacle in the closing direction of the shutter curtain 7, the obstacle is not damaged and the shutter curtain 7 itself is damaged. Never do.

When a brake release signal is input,
The electric motor 29 is rotated, and the drive shaft 2 of the electric motor 29 is rotated.
The cam plate 41 fixed to the brake release lever 9a
3 is moved in one of the linear directions against the urging force of the spring 35, so that the brake is released gradually with the rotation of the electric motor 29, thereby reducing the power consumption at the time of releasing the brake. Can be.

In the above-described embodiment, the brake release lever 3 is used to return the brake instantaneously.
3 is urged by a spring 35 to instantaneously move linearly. However, the braking device according to the present invention provides one or two electromagnetic plungers that extend and retract a telescopic rod in the direction in which the brake release lever 33 moves. May be provided so that both the forward movement and the backward movement of the brake release lever 33 are performed by an electromagnetic plunger. With such a mechanism, the release of the brake can be instantaneously performed in addition to the return of the brake.

The driving of the cam plate 41 by the electric motor 29 includes fixing the cam plate 41 directly to the drive shaft 29a.
As shown in FIG. 9, the coupling 61 may be connected to the drive shaft 29 a and fixed via the coupling 61. With such a mechanism in which the coupling 61 is interposed, an excessive load applied to the cam plate 41 can be absorbed by the coupling 61 and the overload operation of the electric motor 29 can be prevented. Such a mechanism can be constituted not only by the coupling 61 but also by a pinion fixed to the drive shaft 29a and a rack provided directly or indirectly on the brake release lever 33. And a gear having a function of, for example, a cam that meshes with the pinion.

Further, in the braking device 25, the electromagnetic plunger 31 is erected vertically (vertically in FIG. 3). However, the electromagnetic plunger 31 is disposed horizontally (in a direction orthogonal to the plane of FIG. 3). There may be. In this case, the latch 39 and the locking pin 37 of the brake release lever 33 are also arranged in a corresponding direction. Thus, the electromagnetic plunger 3
By arranging 1 horizontally, it is not necessary to penetrate the telescopic rod 31a through the brake release lever 33 as shown in the above embodiment, and it is possible to save space.

In the braking device 25, the brake arm 21 is directly connected to the brake release lever 33. However, a wire is stretched in a loop between a pair of pulleys, and a part of this wire is provided. Alternatively, the brake release lever 33 may be fixed to the arm, and the brake arm 21 may be fixed to the other part of the wire. With such a mechanism, the braking device 25 can be installed at an arbitrary position away from the braking arm 21. For example, it is possible to cope with a case where the braking device 25 cannot be installed near the switchgear 7. Becomes

The braking device 25 includes a spring 3
5, the brake arm 21 is swung by pulling the brake release lever 33 by the urging force of 5, and the brake is returned.
A mechanism may be used in which the brake arm 21 is swung by pressing the spring with a spring to return the brake.

Further, the braking device 25 does not directly connect the brake releasing lever 33 and the braking arm 21 but makes a contact connection, and moves to one side and the other by biasing means provided mutually. The brake release lever 33 and the brake arm 21 may be connected, for example, in a link structure, that is, the brake release lever 33 and the brake arm 21 may be connected in a link shape. It is good also as a structure which interlocks directly with 33.
In this case, it is possible to adopt a configuration in which the urging means provided in the braking arm 21 described above is omitted.

In the above example, the brake release lever 33 is slidably moved in one direction and the other in the linear direction. However, the brake release lever 33 is moved in one direction and the other by swinging with a support shaft. Is also good.

Further, in the above-described example, an example has been described in which the biasing means for providing the biasing force to the brake release lever 33 is constituted by the spring 35. However, the biasing means may be an elastic member such as a leaf spring or rubber. May be composed of
Similarly, the biasing means provided on the braking arm 21 may be configured by a spring, a leaf spring, rubber, or the like.
In addition, although the example in which the movement restricting member is configured as the latch 39 has been described, it may be configured with a bar or a pin.

Also, the case where the opening and closing body is the shutter curtain 7 composed of slats has been described as an example. However, in the braking device for the opening and closing body according to the present invention, the opening and closing body is a grill curtain, a sheet curtain, or the like. A panel curtain, a curtain combining a slat and a sheet, or the like may be used, and the same effects as described above can be obtained even with a sliding door or an open door.

Further, the shutter device has been described as an example of the opening / closing device, but the braking device according to the present invention is also applicable to other types of opening / closing devices such as a screen device, a smoke-proof hanging device, and a sliding door device. It is possible, furthermore, in addition to the building described above as a target where this switchgear is arranged,
It may be an opening portion such as an entrance / exit portion of a structure such as an underground mall, a tunnel, a vehicle, a ship, or an aircraft, an opening portion of a window, or an opening space for forming a disaster prevention section.

Further, the braking device 25 has been described as an example of a brake return in which the opening / closing member brakes in the closing process (the lowering process of the shutter curtain 7). However, the braking device according to the present invention, on the contrary, The opening / closing member may be used for a brake return for braking in an opening process (shutter curtain 7 rising process), or may be used for a shutter device that performs only a closing operation.

[0054]

As described above in detail, according to the opening / closing body braking device of the present invention, the brake release lever supported so as to be linearly movable and the brake release lever attached to the other side in the linear direction. A spring that biases, a latch that locks to the brake release lever at one of the linear movement positions of the brake release lever to restrict the movement of the brake release lever, and releases the latch by inputting a brake return signal When the latch is released, the brake release lever is quickly moved in the other linear direction by the biasing force of the spring, allowing the brake to return instantaneously. become.

[Brief description of the drawings]

FIG. 1 is a front view illustrating a schematic configuration of a shutter device provided with a braking device according to the present invention.

FIG. 2 is a plan view of the inside of the braking device shown in FIG.

FIG. 3 is a front view of the inside of the braking device shown in FIG. 1 as seen through;

FIG. 4 is a plan view (a) at the start of rotation of the cam plate;
It is operation | movement explanatory drawing which represented front view by (b).

FIGS. 5A and 5B are operation explanatory diagrams showing a plan view at the start of pressing the brake release lever and a front view at (b).

FIGS. 6A and 6B are operation explanatory views showing a plan view and a front view at the time of latch engagement, respectively.

FIGS. 7A and 7B are operation explanatory diagrams illustrating a plan view and a front view at the end of the rotation of the cam plate, respectively.

FIGS. 8A and 8B are operation explanatory diagrams illustrating a plan view and a front view at the time of releasing latch engagement, respectively. FIGS.

FIG. 9 is a front view showing a modification of the present invention in which a coupling is interposed between a drive shaft of an electric motor and a cam plate.

[Description of Signs] 7 ... Opening / closing body (shutter curtain) 9 ... Opening / closing device 21 ... Input unit (braking arm) 25 ... Braking device 29 ... Electric motor 29a ... Drive shaft 31 ... Electromagnetic plunger 33 ... Brake release lever 35 With Biasing means (spring) 39: movement restricting member (latch) 41: cam plate

Claims (2)

[Claims] 1. An opening / closing device for opening / closing an opening / closing device that, when moved to one side, interlocks and connects the opening / closing body and the opening / closing body, and moves to the other side to disconnect the opening / closing body and the opening / closing body and stop the operation of the opening / closing body. In a body braking device, a brake releasing lever movably supported and connected to an input portion of the switch, biasing means for biasing the brake releasing lever to the other, and one of the brake releasing levers A movement restricting member that is locked to the brake release lever at the movement position of (1) and restricts the movement of the brake release lever; and (b) moving the movement restriction member in the unlocking direction by input of a brake return signal to release the brake. And an electromagnetic plunger for moving the lever for the other by the urging force of the urging means. 2. An electric motor for rotating a drive shaft in response to an input of a brake release signal, and the brake release lever is driven by driving the electric motor fixed to the drive shaft of the electric motor and receiving the brake release signal. The braking device for an opening / closing body in an opening / closing device according to claim 1, further comprising: a cam plate that moves to one side against an urging force of the urging unit.