JPS6329113Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is an electric blind in which a reversible motor is connected to an operating shaft mounted in the head box of the blind, and the blades are tilted by rotating the reversible motor forward or reverse. This relates to the operating mechanism of the

Conventionally, in order to stop the blades of the blind at any selected angle such as 30°, 45°, 60°, etc., a plurality of limit switches corresponding to the desired number of angles are provided. By turning off the motor when the operating shaft has rotated to the desired angle,
Generally, the vane is stopped at a desired angle.

However, in such a structure, the limit switch is switched only by rotating the operating shaft in one direction. The limit switch works, but the limit switch cannot be used in the 90° → 45° direction, so please return the vane to its original position.
It was necessary to rotate it 90° → 0° → 45°.

Furthermore, if a limit switch configured to act on forward and reverse rotations is used, the circuit becomes complicated and requires a large space, making it difficult to incorporate it into a plind head box.

The present invention aims to eliminate the drawbacks of the conventional electric blind operating mechanism and provide an electric blind operating mechanism that has an extremely compact and simple structure and can accurately stop the blade at any angle. .

The operating mechanism of the electric blind according to the present invention is as follows:
In the operating mechanism of an electric blind, a reversible motor is connected to an operating shaft mounted in the head box of the blind, and the blades are tilted by rotating the reversible motor forward or backward. A working disk is provided which is rotated by the actuating disk, and the electrode plates provided on the working disk include a first electrode plate and a second electrode plate which are arranged concentrically on the actuating disk, and these electrode plates. and an insulating area that electrically insulates the above-mentioned insulating area, the insulating area consisting of a generally continuous insulating area in a spiral shape including a plurality of arcuate insulating parts that are successively stepped and have a changing radius. a first end electrode disposed in constant contact with the first plate near the center of the plate; and a second end electrode disposed in constant contact with the second plate near the periphery of the plate. and between these end electrodes so as to be able to make sliding contact with either the first plate or the second plate at the step in the spiral insulation area. a plurality of intermediate electrodes disposed at a first electrode, the intermediate electrode being connected to a first electrode between a switching connector selectively connectable to one of the intermediate electrodes and the end electrode; When the intermediate electrode is in contact with the plate, a current is passed between the intermediate electrode and the first plate, thereby rotating the reversible motor in one direction, and when the intermediate electrode is in contact with the second plate, the intermediate electrode and second
The present invention is characterized in that a motor drive circuit is provided which causes a current to flow between the reversible motor and the polar plate of the reversible motor, thereby rotating the reversible motor in the opposite direction.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of an electric blind to which the operating mechanism of the present invention is applied. In the figure, 1 is a head box, 2 is a blind blade, 3 is a bottom plate, and 4 is a support that supports the blade. 5 is a lifting cord for raising and lowering the vane, and 6 is a tilting drum for tilting the vane by operating the support cord.

The above-mentioned tilting drum 6 is mounted on an operating shaft 7, and as is well known, by rotating the operating shaft 7, the tilting movement of the blades is controlled. In order to rotate the operating shaft 7, a reversible motor 8 is provided within the head box 1, and rotation is transmitted to the rotating shaft 7 via a suitable transmission device 9.

By rotating the motor 8 in the normal or reverse direction while the blade 2 is raised or lowered to a desired height, the blade can be tilted back and forth.

An actuating mechanism is provided in the present invention to stop the vane 2 at a desired angle, such as 30°, 45°, 60°, etc.

The actuating mechanism according to the present invention has an actuating disk 10 that is mounted on the actuating shaft 7 and rotated by the actuating shaft 7, and a pole plate 11 is provided on the actuating disk 10. As shown in FIG. 2, the electrode plate 11 includes a first electrode plate 11a and a second electrode plate 11b arranged concentrically on the working disk.
Between these electrode plates 11a and 11b,
A continuous, generally spiral insulating section 12 is formed, consisting of a plurality of circular arc-shaped insulating sections 12a, 12b, 12c, 12d that are successively stepped and have varying radii. Arc-shaped insulating portions 12a, 1 of this insulating area 12
A stepped insulating portion 12 is provided between 2b, 12c, and 12d.
A, 12B, 12C, and 12D are formed, and insulating parts 12E and 12F are provided at the ends of the arc-shaped insulating parts 12a and 12d.

A plurality of brush-shaped electrodes are supported on an insulating support 13 mounted within the head box 1 so as to be in sliding contact with the electrode plate 11 described above. These electrodes include first and second end electrodes 14a and 14, respectively, which are arranged so as to be in constant contact with the first electrode plate 11a and the second electrode plate 11b.
b, and an intermediate electrode 1 arranged between these electrodes.
5a, 15b, 15c, 15d, and 15e.
Of these intermediate electrodes, the first intermediate electrodes 15a and 15e are arranged at positions corresponding to the insulating parts 12E and 12F, respectively, to set the final tilting position of the blade, and the second intermediate electrode Electrode 1
5b, 15c, and 15d are step-shaped insulation parts 12A, 12B, and 1 in the insulation area 12, respectively.
2C, the vane is arranged so as to be able to come into sliding contact with either the first pole plate 11a or the second pole plate 12b as the rotary shaft rotates, thereby setting an intermediate tilting position of the vane.

The above second intermediate electrodes 15b, 15c, 15d
When either of the intermediate electrodes is in contact with the first electrode plate 11a, a current is passed between the intermediate electrode and the first electrode plate 11a, thereby rotating the reversible motor 8 in one direction, and A motor drive circuit is provided which causes a current to flow between the intermediate electrode and the second electrode 11b when the electrode is in contact with the second electrode 11b, thereby rotating the reversible motor 8 in the opposite direction.

An example of such a motor drive circuit is shown in FIGS. 3 and 4.

In FIG. 3, 16 indicates intermediate electrodes 15a, 15
b, 15c, 15d, or 15e; 17a, 17b are relays; 18a, 18b are diodes; 19a, 19
b indicates a DC power supply, and in FIG. 4, M indicates a motor (ie, motor 8 shown in FIG. 1).

Next, the operation of the above-mentioned actuation mechanism will be explained.

First, when the switching connector 16 (FIG. 3) is connected to the electrode 15c in the state shown in FIG. , diode 18
Electricity flows through the electrode 15c, the electrode plate 11a, the electrode 14a, and the power source 19a, operating the relay switch 17a.

When relay 17a is activated, relays 17a and 17a are turned ON in the motor operation circuit shown in FIG.
Rotate motor M in direction A. When the motor M rotates, the operating shaft 7 (Fig. 1) is rotated in the direction A,
Blade tilting drum 6 and actuating disk 10 of the blind
is rotated in the A direction. However, the electrode 15C is located in the stepped insulating portion 12B at a position corresponding to the electrode 15c.
When the actuating disk 10 rotates until the electrodes 15C and the electrode plate 11a are in contact with each other, the connection between the electrode 15C and the electrode plate 11a is broken, the rotation of the motor is stopped, and the vane plate 2 is stopped at a predetermined angle. FIG. 3 shows this stopped state.

Next, from this state (the rotating state shown in FIG. 3), when the switching connector 16 is connected to the electrode in contact with the electrode plate 11b, for example, the electrode 15d, the circuit power source 19b, electrode 14b, and the electrode 14b shown in FIG. Pole plate 11b,
Electrode 15d, diode 18b, relay 17b,
Electricity flows to the power supply 19b, and in the motor operating circuit shown in FIG. 4, the relays 17b and 17b are turned on, and the motor M rotates in the direction B. When the motor M rotates in the B direction, the operating shaft 7 (FIG. 1) is rotated in the B direction, and the tilting drum 6 and the operating disc 10 are rotated in the B direction. However, when the actuating disk 10 rotates until the electrode 15d comes into contact with the stepped insulating part 12c located at the position corresponding to the electrode 15d, the connection between the electrode plate 11b and the electrode 15d is broken, the rotation of the motor is stopped, and the blade plate 2 is stopped at a predetermined angle.

Also, from the state shown in FIG. 3, the switching connector 16
When connected to the electrode in contact with the electrode plate 11a, electricity is supplied and rotated in the same manner as described above, and the angle of the blade plate is changed.

In the illustrated example, the polar plates 11a and 11b are donut-shaped, but the rotation angle of the tilting drum (actually,
180° rotation is fine) to create a fan shape.

In the above explanation, a blind in which only the rotation of the vane is performed by the operating shaft has been explained, but this can also be applied to a blind in which the lifting and lowering rotation is performed by one operating shaft by arranging an appropriate one-way clutch. It goes without saying that it is possible to use a control device.

As described above, according to the actuation mechanism according to the present invention, by selecting the intermediate electrode corresponding to the desired blade tilting angle, the driving circuit of the motor that rotates the blade is automatically set in the forward or reverse direction. A directional current flows to rotate the motor, rotating the vane precisely to the desired angle. In this case, there is no need for extra rotation of the vane, such as returning it to the initial angle and then rotating it again, as in the conventional method, and the rotation angle of the vane can be changed from either the forward or reverse direction. It is easy to operate because it can be done. Furthermore, there is no need to install multiple separate limit switches, and it can be easily installed in the narrow space of a blind headbox. However, in order to rotate the vane, the switching connector is set at the desired angle, and by selectively connecting this switching connector, the vane automatically rotates to the desired set angle, and the limit switch controls the current. is turned OFF and stops the rotation of the blade, so
Rotating the blade is easy.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a part of a blind to which the actuation mechanism of the present invention is applied, Fig. 2 is an enlarged front view showing an example of the actuation mechanism of the invention, and Figs. 3 and 4 are as shown in Fig. 2. FIG. 3 is a diagram showing a motor drive circuit in the operating mechanism shown in FIG. 1... Head box, 2... Vane plate, 3... Bottom plate, 4... Support cord, 5... Lifting cord, 6... Tilting drum, 7... Operating shaft, 8...
Motor, 9... Transmission device, 10... Operating disc, 1
DESCRIPTION OF SYMBOLS 1... Electrode plate, 12... Insulating area, 13... Insulating support, 14a, 14b... End electrode, 15a,
15b, 15c, 15d, 15e... intermediate electrode,
16...Switching connector, 17a, 17b...Relay, 18a, 18b...Diode, 19a, 1
9b...DC power supply.

Claims (1)

[Scope of utility model registration request] In the operating mechanism of an electric blind, a reversible motor is connected to an operating shaft mounted in the head box of the blind, and the blades are tilted by rotating the reversible motor forward or backward. A working disk 10 is provided which is rotated, and a pole plate 11 provided on the working disk 10 is
The working disk 10 has a first electrode plate 11a and a second electrode plate 11b arranged concentrically and an insulating area 12 electrically insulating these plates, the insulating area being sequentially It consists of a generally continuous insulating area in a spiral shape, including a plurality of circular arc-shaped insulating parts 12a, 12b, 12c, 12d whose radius changes in steps, and a first electrode plate 11a near the center of the above-mentioned electrode plate. A first end electrode 14a arranged so as to be in constant contact with the electrode plate 14a and a second end electrode 14b arranged so as to be always in contact with the second electrode plate 11b near the periphery of the electrode plate, These end electrodes 14a, 14
During b, first intermediate electrodes 15a, 15e and 15e, corresponding to each step in the spiral insulation section 12, are successively shifted in position in the diametrical direction of the working disk to set the final tilting position of the vane. Second intermediate electrodes 15b, 15c, 15 for setting intermediate tilting positions of the blades
d, and the above-mentioned second intermediate electrode moves to the first electrode plate 11 as the actuating disk 10 rotates with the stepped portion as a boundary.
a switching connector 16 that can be provided in sliding contact with either the electrode plate 11b or the second electrode plate 11b and selectively connect with any one of the intermediate electrodes, and the end electrodes 14a, 14b. When the intermediate electrode is in contact with the first electrode plate, a current is passed between the intermediate electrode and the first electrode plate, thereby rotating the reversible motor in one direction, and causing the intermediate electrode to rotate in one direction. is in contact with the second electrode plate, the intermediate electrode and the second
1. An operating mechanism for an electric blind, characterized in that a motor drive circuit is provided, which rotates the reversible motor in the opposite direction by passing a current between the polar plate of the motor and the reversible motor.