JPH0728792B2 - Manual Carter Motor Device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an improvement in a device that can open and close a curtain both electrically and manually.

[Prior Art] Not only can the curtain be opened and closed with a motor,
The conventional device that can open and close the curtain by hand is
The drive vehicle with the string for opening and closing the curtain is connected to the output shaft of the motor via an electromagnetic clutch.The electromagnetic clutch is engaged when the motor is energized to connect the drive vehicle and the motor, and the electromagnetic clutch is disengaged when the motor is stopped. It was a method to separate the drive car and the motor. Therefore, when the motor was stopped, the curtain could be lightly opened and closed without receiving the resistance of the motor.

[Problems to be Solved by the Invention] The electromagnetic clutch connecting the motor and the driving vehicle is expensive and difficult to miniaturize.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a device for connecting a motor and a drive vehicle, which is inexpensive and can be miniaturized.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the characteristic means of the present invention is:
The drive wheel is integrally attached to the output shaft of the motor, the follower vehicle is integrally fixed to the drive vehicle, the drive wheel and the follower vehicle are rotationally connected via the medium, and the medium is transferred from the connecting device to the disconnecting device or vice versa. There is a shape memory alloy actuator for displacement, and a control circuit for simultaneously energizing the motor and the shape memory alloy and simultaneously blocking radio waves. Here, when the main driving wheel and the driven wheel are gears, the medium is also a gear, and when the main driving wheel and the driven wheel are pulleys, the medium is a belt.

[Operation] When the curtain open or close switch is pressed, the motor rotates in one direction and the shape memory alloy actuator moves forward to move the medium to the connecting position, so that the driving wheel and the driven wheel are rotationally connected and the motor is rotated. Opens and closes the curtain. If the stop switch is pressed midway or the curtain reaches the open / close limit position and the limit switch is activated, the current in the shape memory alloy actuator is cut off at the same time as the motor and the motor stops. Since the vehicle is moved to the cutoff position, the rotational connection between the driving vehicle and the driven vehicle is broken. As a result, while the motor is stopped, the drive vehicle rotates without receiving the rotation resistance of the motor, so that the curtain can be lightly opened and closed by hand.

[Embodiment] An apparatus of the present invention will be described based on an embodiment shown in the drawings.

As shown in FIG. 1, the motor 10 for opening and closing the curtain includes a speed reducer 12, and an output shaft 14 thereof has a driving gear 20 fixed thereto. The motor 10 is installed inside a box 11, and the box is fixed to a wall surface or the like. A driven gear 40 of the same shape and size is arranged coaxially in parallel with the driving gear 20, and the driven gear is rotatably supported by the box 11 integrally with the drive wheel 42. Similarly, a shape memory alloy actuator 25 that moves back and forth in a direction orthogonal to the output shaft 14 is attached to the box 11. A bracket 27 is attached to the tip of the shape memory alloy actuator, and a wide intermediate gear 30 capable of simultaneously engaging with the driving gear 20 and the driven gear 40 is rotatably supported by the bracket. The shape memory alloy actuator 25 advances in the same manner as the fluid pressure cylinder actuator when energized, and retreats when the current is cut off. Therefore, when energized, the intermediate gear 30 meshes with the driving gear 20 and the driven gear 40 at the same time to transmit the rotation of the motor 10 to the drive wheel 42.
Since the gear 20 and the driven gear 40 are disengaged at the same time, the connection between the drive wheel 42 and the motor 10 is separated.

The control circuit simultaneously energizes the motor 10 and the shape memory alloy actuator 25, and simultaneously cuts off the current.

A string 44 for opening and closing the curtain is hung on the drive wheel 42, and the string goes in and out from one end of the curtain rail 45 via a vertical guide wheel 46. The string 44 turns around a horizontal tension wheel 48 at the other end,
Tension is applied by the tension wheel. Curtain rail
A number of runners 47 are movably attached to the 45, and a curtain 50 is hung on the runners. The leading runner 47a is fastened to the string 44, and when the string 44 runs to one side, the curtain 50
Opens, and when traveling in the opposite direction, the curtain 50 closes. Limit switches L1 and L2 are provided at both ends of the curtain rail 45, and an open switch O, a stop switch S, and a close switch C are provided in the switch box 13. Open switch O
When is pressed, the motor 10 rotates in one direction as indicated by an arrow, and at the same time, the shape memory alloy actuator 25 advances and the intermediate gear 30 connects the driving gear 20 and the driven gear 40. As a result, the drive wheel 42 rotates in the rotation direction of the motor 10 to drive the string 44 to one side, and the curtain 50 opens. When the stop switch S is pressed midway or the curtain 50 reaches the open limit and the limit switch L1 is activated, the motor 10 stops rotating and the shape memory alloy actuator 25 retreats to drive the gear.
The connection between 20 and the driven gear 40 is cut off.

When the close switch C is pressed, the motor 10 rotates in the opposite direction, and at the same time the shape memory alloy actuator 25 advances and the intermediate gear
Driving gear 20 and driven gear 40 are connected via 30
Since 42 rotates in the opposite direction, the string 44 runs in the opposite direction and closes the curtain 50. When the stop switch is pressed midway or the curtain 50 reaches the closing limit and the limit switch L2 operates, the rotation of the motor 10 stops, and at the same time the shape memory alloy actuator 25 retreats and the intermediate gear 30 becomes the main gear.
20 and driven gear 40 are separated, so drive gear 20 and driven gear 40
Is disconnected.

Thus, while the motor 10 is stopped, the drive vehicle 44 and the motor 10
Since the drive transmission path is always cut off, the curtain 50 can be lightly opened and closed by the guide without receiving the rotation resistance of the motor 10.

In the embodiment shown in FIG. 2, a wide drive pulley 21 is fixed to the output shaft 14 of the motor 10, and a driven pulley 41 integrated with a drive wheel 42 is arranged parallel to the drive pulley 21. A fixed shaft 32 is mounted on the box 11 coaxially with the driven pulley 41, and an idle pulley 31 is rotatably mounted on the fixed shaft. A shape memory alloy actuator that hangs a flat belt 22 on a main driving pulley 21 and a driven pulley 41 and moves back and forth in a direction orthogonal to the flat belt.
Install 25 in Box 11. When the belt shifter 26 is attached to the tip of the shape memory alloy actuator 25 and the shape memory alloy actuator 25 advances by energization, the belt shifter 26
26 hangs the flat belt 22 on the driven pulley, and when the shape memory alloy actuator 25 retreats due to a power failure, the belt shifter 26
Hangs the flat belt 22 on the idle pulley 31.

When the motor 10 is energized and rotated in the same manner as in the previous embodiment, the shape memory alloy actuator 25 is also energized and advances, and the main driving pulley 21 and the driven pulley 41 are connected, so the curtain opens and closes, but when the motor 10 stops. Since the shape memory alloy actuator 25 also retreats due to a power failure and disconnects the driving pulley 21 and the driven pulley 41, the driving vehicle is independent of the motor 10.
42 can rotate. Therefore, the curtain can be lightly opened and closed while the motor 10 is stopped.

[Advantage of the Invention] As described above, the device of the present invention has a simple structure in which the rotary connection between the motor and the drive vehicle for the curtain opening and closing string is detached by using the shape memory alloy actuator. Therefore, the conventional electromagnetic clutch is used. It is cheaper than a device that can be attached and detached,
The device itself also has the excellent effect of being compact.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a curtain provided with the device of the present invention by partially cutting away, and FIG. 2 is a view corresponding to FIG. 1 of another embodiment. In the figure, 10 is a motor, 11 is a box, 14 is an output shaft,
20 is a main gear, 30 is an intermediate gear, 40 is a driven gear, and 25 is a shape memory alloy actuator.

Claims (3)

[Claims] 1. A runner mounted on a curtain rail so as to be movable in the longitudinal direction thereof, a curtain hung on the runner, and a curtain fixed to the runner by being stretched so as to run inside the curtain rail. A device comprising a string for opening and closing, a drive vehicle for traveling the string, a motor for rotationally driving the drive vehicle, and a control circuit for the motor, wherein a main drive vehicle is provided on the output shaft of the motor as the drive vehicle. When the driven wheels are integrally fixed to each other, the driving wheel and the driven wheel are rotationally connected through a medium, the medium is controlled via a shape memory alloy actuator, and the shape memory alloy actuator is energized together with a motor. , When the medium is moved to the connecting position to rotationally connect the main driving wheel and the driven vehicle, and when the energization with the motor is cut off, the medium is moved to the cutoff position and the main driving wheel Guidance curtain motor apparatus characterized by blocking the rotary coupling of the dynamic wheel. 2. A driving wheel is a driving gear, and a driven wheel is a driven gear.
The medium is formed in an intermediate gear, and the intermediate gear is rotatably supported by a bracket attached to the tip of the shape memory alloy actuator and detached from the main drive gear and the driven gear as the shape memory alloy actuator moves back and forth. The guide curtain motor device according to claim 1, wherein: 3. A drive pulley is formed on a drive pulley, a drive pulley is formed on a drive pulley, and a flat belt is formed on a medium. The flat belt is operated by a belt shifter attached to the tip of a shape memory alloy actuator. A rotary connection between the main driving pulley and the driven pulley is attached / detached as the alloy actuator moves back and forth.
The guide curtain motor device according to the item.