JP5553995B2 - Electric opening and closing curtain rail protection device - Google Patents

Description

The present invention relates to an electric opening / closing curtain rail protection device for protecting an electronic circuit of a device from repulsive return received when the curtain is fully opened from the thickness and mass of the curtain and a back electromotive force of an electric motor received by a manual opening / closing operation.

There is an electric opening and closing curtain rail that opens and closes the curtain electrically by installing a curtain runner that travels through a belt with an electric motor on the curtain rail, and by attaching the top start end of the curtain to the curtain runner. The curtain runner is configured to be stopped by providing limit switches at the fully closed position and the fully open position of the curtain.

In the electric open / close curtain rail, the present invention detects the elastic rebound / return travel distance when the curtain is fully open, which is received from the thickness / mass of the curtain to be mounted, and stores the detected position in the control device as the stop position when the curtain is fully open. Thus, an electric open / close curtain rail which does not cause elastic rebound and return of the curtain caused by opening the electromagnetic clutch and stopping the electric motor in the operation state of the rotation detector is provided.

That is, when the curtain is suspended from the curtain runner and moved to the fully open position of the curtain by the electric motor, the curtain fabric is folded by the power of the motor. motor after stopping a force, but intends fringes curtain runner is moved in the closing direction, that such a state for each opening operation of the curtain is made is not preferable from the design point of view.

It is also possible to predict the rebound return position and provide a limit switch in front of the motor stop position to make the curtain fully open stop position, but not only the number of parts increases, but also when the curtain pattern is changed For example, the limit position must be changed.

In addition, when the curtain is forcibly pulled in the opening or closing direction at a speed higher than the running speed of the motor while the curtain is being opened / closed with an electric motor, the motor is overloaded and a back electromotive force is generated. There is a risk of damaging the electronic circuit of the control device or the mechanism part such as a gear built in the motor.

The present invention has been made in view of the situation as described above. The control device is provided with a function of detecting the elastic rebound return movement distance of the curtain, and the curtain is automatically set by setting the return position to the fully open position of the curtain. An electric open / close curtain rail that improves the design viewpoint with no fluctuation of the curtain after the motor stops by returning, and detects the number of revolutions faster than the normal number of revolutions generated by the motor when the curtain is pulled excessively. By providing a protective device for disconnecting the electromagnetic clutch in the control device, an electric open / close curtain rail protective device that avoids electronic circuit failure due to back electromotive force and damage to mechanical parts such as a motor built-in gear due to physical external force will be provided. It is what.

The present invention is to device an electromagnetic clutch and a rotation detector to a rotary shaft of the electric motor, and by operating forward rotation of the electric motor (curtains open- operation) or reverse rotation (the curtain closed operation) by the control device curtains The curtain is opened and closed by attaching its starting end to a curtain runner provided on a belt that runs on a pulley that is interlocked with the rotation of the electric motor. Curtain full-open or full-close operation is instructed by the control device, and the stop command and operation speed from full open to full close, full close to full open are received from the rotation detector by the control device. By sending a signal to the electromagnetic clutch, the rotation of the electric motor is connected and cut off. When the curtain is operated from the fully-closed state to the fully-open state, the fully-open stop position is set by detecting the overload stop of the electric motor by the rotation detector and receiving this signal by the control device to open the electromagnetic clutch.

At this time, when the electromagnetic clutch is released, since the curtain runners becomes free, the thickness mass of the compressed in fold tatami seen packed curtain fabric, and rebound, hanging was curtain in free state Return to the closing direction until It is not preferable from the viewpoint of design that this rebounding occurs every time the fully opening operation is performed. Therefore, this return rotation is detected by the rotation detector, the return rotation stop operation is sent as a signal to the control device, and this is stored, and when the curtain fully open operation is performed thereafter, the return stop position is set as the curtain fully open stop position. Thus, an electric opening / closing curtain protecting apparatus that is preferable from the viewpoint of design without rebound and fluctuation can be provided.

Also, when the electromagnetic clutch is connected, the electric motor is driven, the curtain runner runs, and the curtain is artificially forcibly pulled during the opening or closing operation, the force is applied to the electric motor and the electric motor In some cases, counter electromotive force may be generated due to overloading of the motor. However, if the counter electromotive force is generated, the electronic circuit of the control device may be damaged, or the mechanism part such as a gear built in the electric motor may be damaged. . In such a case, if the control device detects a rotation that is equal to or greater than the set rotation value of the motor and immediately releases the electromagnetic clutch, the control device can be prevented from malfunctioning due to the counter electromotive force, and the built-in electric motor It is also possible to prevent damage to gears and other mechanical parts.

Curtain fully closed state diagram Curtain fully open Explanatory drawing of the curtain being compressed and folded by the electric motor Illustration of the curtain rebounding Curtain rail internal view Illustration of control device Illustration of control device Control unit configuration block diagram Curtain fully closed position registration mode explanatory diagram Curtain fully open position registration mode explanatory diagram Motor overload protection flowchart

Embodiments of the present invention will be described below with reference to the drawings.
1 to 4 show a state in which an electric open / close curtain rail control device 1 equipped with an electric open / close curtain rail protection device of the present invention, a curtain rail 2 and a curtain 3 are installed. The curtain 3 is suspended from the curtain rail 2 by a hanging tool 4, and a curtain runner 5 is provided at the starting end of the curtain hanging tool 4, in other words, at the curtain upper end. The curtain runner 5 is coupled to a belt 6 that runs in the curtain rail.

The control device 1 includes an electric motor 7 shown in FIGS. 6 and 7, an electromagnetic clutch 8 attached to a rotation shaft of the motor 7, a rotation detector 9, and a control unit 10. The rotation detector 9 includes a slit plate 12 and an optical sensor 13 attached to the output side rotary shaft 11 of the electromagnetic clutch 8. The rotation detector 9 captures a train of light passing through the rotating slit plate 12 as a pulse signal and travels the belt 6. , Detect the speed. The terminal of the output side rotating shaft 11 is coupled to a pulley 14 (FIG. 5) that runs on the belt 6.

The control unit 10 includes a motor drive circuit 15, an electromagnetic clutch drive circuit 16, a signal input circuit 17 from the rotation detector 9, an operation signal input circuit 18, and a microcomputer 19. The input signal is analyzed by the microcomputer 19. Drive, stop, correction, and protection operations are performed.

The operation of implementation will be described below with reference to the drawings.
When the curtain 3 is operated from the fully closed state to the fully opened state of FIG. 2 as shown in FIG. 1, the curtain 3 is compressed and folded by the driving force of the electric motor 7 as shown in FIG. the electromagnetic clutch 8 is opened, the curtain runner 5 becomes free, curtain 3 packed seen tatami folding, compression as in FIG. 4 results in a rebound back until free. At this time, the slit plate 12 rotates reversely by the rebound return distance. The reverse rotation of the slit plate 12 is transmitted as a pulse signal by the optical sensor 13 to the signal input circuit 17 of the control unit 10 and analyzed by the microcomputer 19. The position where the rebound return is stopped, that is, the position shown in FIG. Then, the curtain 3 is not compressed and folded.

The rotation detector 9 detects when the curtain 3 is forcibly pulled during the closing operation or the opening operation, and an external force is applied to the motor 7 via the belt 6 and the pulley 14 faster than the set value. Then, the controller 10 receives this signal and instantaneously opens the electromagnetic clutch 8 via the electromagnetic clutch drive circuit 16 to prevent the electromotive force from being generated by the electric motor 7.

The curtain 3 is opened and closed by receiving an input signal from the remote controller input unit 20 by the operation signal input circuit 18 and a command from the microcomputer 19 by the motor drive circuit 15 to move the electric motor 7 in the forward direction or the reverse direction. This is done by rotational driving.

The fully closed position of the curtain 3 is set by energizing the motor 7 with the electromagnetic clutch 8 connected as shown in FIG. 9, and the curtain 3 is fully closed by driving the motor 7 and the rotation detector 9 is stopped. By registering the position, the electromagnetic clutch 8 is released and the motor 7 is de-energized.

As shown in FIG. 10, the curtain fully open position is set by energizing the motor 7 and driving the motor 7 with the electromagnetic clutch 8 connected. The curtain 3 stops at the fully open position, and when the rotation detector 9 stops, the electromagnetic clutch 8 is opened and the motor 7 is de-energized. Curtain 3 Curtain runner 5 which is tatami only folded compressed with a force of becomes free motor 7 at the open of the electromagnetic clutch 8 is caused to rebound back as shown in Figure 4. The rotation detector 9 detects this rebound return, and then registers the rebound return stop position in the microcomputer 19 as a fully open stop position, so that the curtain 3 is compressed and folded by the force of the motor 7 when fully open. There is no. Therefore, the next curtain 3 can be opened without return and fluctuation.

Further, in order to protect the control device 1 by the counter electromotive force due to the overload of the motor 7, when the rotation detector 9 detects a rotation speed higher than the set value, the electromagnetic clutch 8 is opened and the curtain 3 is immediately freed. To do.

1: Control device 2: Curtain rail 3: Curtain 4: Suspension tool 5: Curtain runner 6: Belt 7: Electric motor 8: Electromagnetic clutch 9: Rotation detector 10: Control unit 11: Output side rotating shaft 12: Slit plate 13: Optical sensor 14: Pulley 15: Motor drive circuit 16: Electromagnetic clutch drive circuit 17: Signal input circuit 18: Operation signal input circuit 19: Microcomputer 20: Remote controller input unit

Claims (1)

The curtain runner provided at the curtain hanging start end is attached to the rotary shaft of the motor and to the output rotary shaft side of the electromagnetic clutch in the electric open / close curtain rail that opens and closes the curtain by running through the belt with an electric motor. A detection circuit that detects the rebound return position from the fully open position of the curtain by a motor drive during the initial operation in a control device that operates by receiving a signal from the rotation detector, as well as a rotation detector comprising a slit plate and a light sensor. When the curtain is fully opened again, the rebound return position is set to the curtain fully open position, and the electric motor is overloaded when the curtain is opened and closed manually by the electric motor. Electric motor with a function to release the electromagnetic clutch when Electric closing curtain rail protection device, characterized in that to protect the electronic circuit from the counter electromotive force due to overload.