JP2689013B2 - Electric blind control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric blind, and more particularly to a control device for an electric blind that raises and lowers a blind and opens and closes a blade according to rotation of an electric motor.

[Prior Art and Problems to be Solved by the Invention] Conventionally proposed and commercially available electric blinds are provided with a controller for instructing the blinds to move up and down, stop, and open and close slats (blades). ing. The controller is provided with a switch for the above command, and the blind is moved up and down and the slats are opened and closed by operating the switch.

By the way, in the conventional electric blind, when the blind is raised or lowered, each slat is tilted indoors or closed, or conversely, it is tilted outdoor to be closed and raised or lowered. It is supposed to do. If the conventional controller stops the blind from rising or falling, or if the blind is stopped by detecting the lowest limit position, the slats remain closed, so the user of the blind needs to restart the slats. I have to instruct opening and closing,
There is a problem that the operation is complicated. Alternatively, as disclosed in Japanese Patent Laid-Open No. 63-167880, there is also a device in which the storage means stores the angle before raising and lowering, and after moving up and down, the slats are opened and closed at the angle stored by the storage means. However, it was necessary to instruct opening and closing to a desired angle again after the lifting operation. This also has a problem that the operation is complicated like the blind that is still closed at the above-mentioned lower limit.

Therefore, a main object of the present invention is to provide a control device for an electric blind that can automatically open and close the slat at a desired angle after the blind is stopped without instructing to open or close the slat again. .

[Means for Solving the Problems] The present invention is a control device for an electric blind that raises and lowers a blind and opens and closes a blade according to the rotation of an electric motor, and includes keys corresponding to different opening and closing angles of the blade. , Setting means for setting the angle that the blade should take after the blind is stopped, angle detection means for detecting the angle of the blade, stop command means for giving a command for stopping the raising and lowering operation of the blind, and stop When the stop of the blind is commanded by the commanding means, the raising and lowering of the blind is stopped, and the angle of the blade detected by the angle detecting means is compared with the set angle so that the blade becomes the set angle. And a control means for controlling the rotation of the electric motor.

[Operation] In this invention, when the operation of raising or lowering the blind is stopped, the detected slat angle is compared with a preset angle, and the rotation of the electric motor is controlled so that the slat becomes the set angle. The rotation is stopped when the slats reach the set angle.

[Embodiment of the Invention] FIG. 1 is a diagram showing a schematic configuration of an electric blind to which an embodiment of the present invention is applied. In FIG. 1, the electric blind is composed of a blind body 1 and a controller 2. The blind body 1 and the controller 2 are
It is connected via the connection cord 3.

The controller 2 has an up key 21, a stop key 22, and a down key.
23, slat opening / closing keys 24 and 25, and slat angle setting switch 26 are included. The ascending key 21 is for instructing to raise the blind, the stop key 22 is for instructing to stop the blind, and the descending key 23 is for instructing to descend the blind. Slat open / close key
The numeral 24 is for rotating the slat in the clockwise direction when viewed from one end, and the slat opening / closing key 25 is for rotating the slat in the counterclockwise direction when viewed from the same end. The slat angle setting switch 26 is for setting the angle that the slat should take at the lowermost position of the blind. The slat angle setting switch 26 includes switches 26a to 26f.

In this embodiment, when the slat angle is set in advance by the slat angle setting switch when the slat is stopped at the lowest limit position, the setting is performed when the blind descends and stops at the lowest limit position. The slats are opened and closed at the specified angle. The slat angle set by the slat angle setting switch described above is illustrated in FIG.

Next, the slat angle set by the slat angle setting switch will be described with reference to FIGS. 1 and 2. When the switch 26a is pressed, FIG. 2 (a)
As shown in, at the lowest position, the slats 13 are fully closed with their inclined surfaces facing outward. When the switch 26b is pressed, the slat 13 is turned upward 45 as shown in FIG. 2 (b).
Controlled by °. When the switch 26c is pressed, the slat 13 is horizontally controlled as shown in FIG. 2 (c).
When the switch 26d is pressed, the slat 13 is controlled downward 45 ° as shown in FIG. 2 (d). Switch 26
When e is pressed, the slat 13 is fully closed inward as shown in FIG. 2 (e). Switch 26f is the above switch 2
When pressed at the same time as any of 6a to 26e, the control of the slat angle is performed not only in the lowest position but also in the entire region.

FIG. 3 is a view showing a main part of a mechanism for controlling the slat angle. In FIG. 3, the drive shaft of the geared motor 11 is a lifting shaft via a coupling (not shown).
Connected to 12. The lifting shaft 12 has a winding drum.
14 and a ladder drum 16 are pivotally attached. Winding drum 14
Has one end of the lifting tape 17 fixed,
One end of a ladder cord 18 is fixed to the ladder drum 16. When the geared motor 11 rotates, the winding drum 14
And the ladder drum 16 rotates. The lifting tape 17 is wound or unwound by the rotation of the winding drum 14, and the blinds are moved up and down. Further, the ladder drum 16 rotates, for example, in the counterclockwise direction to pull up one ladder cord 18a, and conversely, by rotating in the clockwise direction, the other ladder cord 18b.
Are lifted, which changes the angle of the slats 13.

A rotary plate 141 having a large number of slits is fixed to the take-up drum 14, and a rotary plate 141 is provided between the light projecting unit and the light receiving unit of the photo interrupter 19 provided in association with the rotary plate 141. Are supposed to pass through. The photo interrupter 19 optically detects the interruption of the light due to the slit formed in the rotary plate 141 of the winding drum 14, and converts the rotation of the winding drum 14 into an electric signal. Similar to the take-up drum, the ladder drum 16 is fixed with an angle detection plate 161 provided with a large number of slits, and the light projecting section and the light receiving unit of the photo interrupter 20 provided in association with the angle detection plate 161 are received. The angle detection plate 161 passes between the parts. The photo interrupter 20 optically detects the interruption of light due to the slit formed in the angle detection plate 161 of the ladder drum 16 and converts the angle of the slat 13 into an electric signal.

The ladder drum 16 is provided with a protrusion (not shown) as a stopper. When the angle reaches a certain value (fully closed position), the protrusion provided in the head box 15 of the bride (Fig. It hits (not shown) and will not rotate any more. Further, in order to prevent the load from being applied to the geared motor 11, the ladder drum 16 has a mechanism that slips with respect to the elevating shaft 12 after the ladder drum 16 is stopped by the stopper.

FIG. 4 is a schematic block diagram showing the electrical configuration of an embodiment of the present invention. As shown in FIG. 4, the electric blind is provided with a microcomputer unit 4. In the microcomputer unit 4, in addition to the controller 2 described above,
As a main configuration, a power supply unit 5, a motor and drive unit 6, a blind height detection unit 7, a setting switch unit 8 and a slat angle detection unit 9 are connected.

The power supply unit 5 produces a power supply necessary for the electrical configuration of the geared motor 11, the microcomputer unit 4, and the like. The motor and drive unit 6 controls the geared motor 11 in the normal rotation, reverse rotation or brake mode in response to a command from the microcomputer unit 4. Blind height detector 7
Includes the photo interrupter 19 described above, and its output signal is supplied to the microcomputer unit 4. The microcomputer unit 4 can know the rising amount and the lowering amount of the lifting tape 17 by counting the electric signals generated by the rotation of the winding drum 14, and detects the lowest position which is the position lowered by a predetermined amount. can do. The slat angle detection unit 9 includes a photo interrupter 20, and its output is given to the microcomputer unit 4. The microcomputer unit 4 counts the electric signals generated by the rotation of the ladder drum 16,
The angle of the ladder drum 16, that is, the angle of the slats 13 can be known. The setting switch section 8 is for performing various settings such as setting the lowest position of the blind and setting the code number of the blind. Setting switch section 8
Thus, the angle may be set using the controller 2 described above.

FIG. 5 is a flow chart for explaining the operation of the embodiment of the present invention. Next, the operation of one embodiment of the present invention will be described with reference to FIGS.

When the controller 2 is operated in the standby state,
Transition to each operation mode. That is, in step S1, if it is determined that there is an operation command, then in step S2, it is determined whether or not a slat opening / closing operation is commanded, and if it is not a slat opening / closing command, then,
In step S4, it is determined whether or not it is an up command, and if it is not an up command, then in step S6, it is determined whether or not there is a down command.

When the slat opening / closing command is issued, the process proceeds from step S2 to step S3, and the slat opening / closing operation is performed. That is, when the slat opening / closing key 24 is operated, the motor and drive unit 6 rotates the elevating shaft 12 clockwise while the slat opening / closing key 24 is operated by the command from the microcomputer unit 4 while the key is being operated. Open 13 or close 13. When the slat open / close key 25 is operated, the motor and drive unit 6 are
Rotate 12 counterclockwise to open or close the slat. If an up command is issued, step S4
Then, the process proceeds to step S5, and the ascending operation is performed. That is, in response to a command from the microcomputer unit 4, the motor and drive unit 6 rotates the lifting shaft 12 in the direction in which the lifting tape 17 is wound. When the descending command is issued, the process proceeds from step S6 to step S7, and the descending operation is performed. That is, in response to a command from the microcomputer unit 4, the motor and drive unit 6 rotates the lifting shaft 12 in the direction in which the lifting tape 17 is rewound.

Following the descending command signal, the controller 2 sends the slat 13 to the microcomputer unit 4 at the lowest position.
The data of the angle that should be taken is input. In step S8, the microcomputer unit 4 stores this input data in the memory (not shown). The microcomputer unit 4 confirms the presence or absence of a signal from the blind height detection unit 7 and the next signal from the controller 2 while lowering the blind. The microcomputer section 4 always calculates the signal from the blind height detecting section 7 and confirms whether or not it has reached the lowest limit position. If the stop key 22 of the controller 2 is pressed before reaching the lowest limit position, the process proceeds from step S9 to step S10 to perform a normal stop operation, and then returns to the standby state.

On the other hand, if the lower limit position is reached before the stop key 22 of the controller 2 is pressed, the process proceeds from step S11 to step S12, and the microcomputer unit 4 stops the descent of the blind in step S12. Then, in step S13, a slat opening / closing operation is performed. At this time, the microcomputer unit 4 calculates the signal of the slat angle detection unit 9 and performs the opening / closing operation until the slat angle matches the value input from the slat angle setting switch 26. If it is determined in step S14 that they match, the microcomputer unit 4
Stops the opening / closing operation in step S15, and then returns to the standby state.

In the above-described embodiment, the opening and closing of the slat is controlled so that the slat angle becomes the value set by the setting switch only when the lower limit position is reached.
When the setting key 26f shown in the figure is pressed, the same control as described above is performed regardless of the position where the key is stopped.
In this case, the slat angle is controlled to the set value even if the slat angle is stopped after the ascending operation.

In the above-described embodiment, the slat angle is set by setting from the controller 2 or the setting switch section 8. However, an external device is connected to the microcomputer 4 via an interface, and the blind is opened by the external device. The angle may be set by remote control. Furthermore, although the angles a to e of the slat angle setting switch 26 are set to 0 °, ± 45 °, and fully closed, the user can set an arbitrary angle (eg, 0: 0 depending on the season and time zone).
(°, 15 °, 45 °, 60 °, fully closed).

[Effects of the Invention] As described above, according to the present invention, if the slat angle after raising and lowering of the blind is set in advance, it is automatically controlled to reach the set angle.
The blind user does not have to adjust the slat angle again after the blind has stopped, and the operation of the blind becomes easy.

Also, by changing the setting of the angle according to the time of day and the season, the light incident from the window can be appropriately controlled, and the original purpose and effect of the blind can be enhanced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of an electric blind to which an embodiment of the present invention is applied. FIG. 2 is an illustrative view for explaining a slat angle set by the controller shown in FIG. FIG. 3 is a view showing a main part of a lifting mechanism and a slat opening / closing mechanism of an electric blind according to an embodiment of the present invention. FIG. 4 is a schematic block diagram showing the electrical configuration of an embodiment of the present invention. FIG. 5 is a flow chart for explaining the operation of the embodiment of the present invention. In the figure, 1 is a blind body, 2 is a controller,
4 is a microcomputer unit, 6 is a motor and drive unit, 7 is a blind height detecting unit, 9 is a slat angle detecting unit, 11 is a girder motor, 12 is a lifting shaft, 13 is a slat, 16 is a ladder drum, 18 is a ladder cord , 21 is an up key, 22 is a stop key, 23 is a down key, and 26 is a slat angle setting switch.

Continuation of the front page (56) References JP-A-2-197688 (JP, A) JP-A-190889 (JP, A) JP-A-63-167880 (JP, A) Jitsukaihei 2-43397 (JP , U)

Claims (1)

(57) [Claims] 1. A control device for an electric blind that raises and lowers a blind and opens and closes a blade according to the rotation of an electric motor, the controller including keys corresponding to different opening and closing angles of the blade, after the blind is stopped. Setting means for setting the angle that the blade should take, angle detection means for detecting the angle of the blade, stop command means for giving a command for stopping the lifting operation of the blind, and the stop command When the stop of the blind is instructed by means, while stopping the elevation of the blind,
A control means for comparing the angle of the blade detected by the angle detection means with the angle set by the setting means, and controlling the rotation of the electric motor so that the blade has the set angle. , Control device for electric blinds.