JPH0835380A - Power blind device - Google Patents

Abstract

PURPOSE:To regulate the angle easily and accurately, by selecting the inclination angle of slats, designating the angle to every alternative slats in blinds which can be opened and closed in such a condition, and opening and closing the slats by making them coincide with the angle. CONSTITUTION:While the inclination angle of slats 13 are varied in several stages from the horizontal position to the outer side or the inner side, by operating the slat angle designation switch 24, a motor 4 is driven by operating switches 21, 22, and 23 as in such a condition, so as to wind up and wind down the slats 13. In this case, the angle of the slats 13 is selected by selecting the angle of the slats of the odd number stages without including the first slat at a desired angle, and the slats are opened and closed by making the other slats coincide with the angle. Consequently, the angle regulation of the slats can be carried out easily and accurately, and the workability can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric blind device, and more particularly to an electric blind device for opening and closing the blades of a blind by an electric motor.

[0002]

2. Description of the Related Art Recently, various motorized auto blinds have been proposed which are installed in windows of offices, conference rooms, stores and the like. Due to its convenience, auto blinds are becoming popular, and in the future, they will also be popular for general household use. However, currently proposed and commercially available auto blinds are provided with a switch for instructing the rising or lowering of the blind, but a special switch for adjusting the angle of a blade (hereinafter referred to as a slat) is provided. Is not provided.

However, in the conventional auto blind, it is necessary to close the blind once in order to raise or lower the blind. Therefore, when the up or down switch is operated, a pulsed voltage is applied to the motor for a predetermined time. The blind is closed by rotating the winding shaft so that the slats become vertical, and then the blind is raised or lowered.

Therefore, in the conventional auto blind, the angle is adjusted by operating the raising or lowering switch to visually check the movement of the slat and operating the stop switch when the optimum angle is reached. It can be carried out.

[0005]

As described above, in the conventional auto blind, when the slat angle is adjusted, the operator operates the up or down switch to see the movement of the slat angle. When it is determined that the proper angle is met, the stop switch must be operated. If this stop switch is not operated, the blind will subsequently rise or fall depending on the input state of the switch, so the operation of adjusting the angle is not easy.

When raising or lowering the blind, the raising or lowering switch is operated to raise or lower the blind, and when the desired position is reached,
To operate the stop switch, at this time, in order to return the slat angle to its original state, the slat angle must be adjusted by operating the up or down switch.
It is extremely complicated. Furthermore, since the angle adjustment of the slat after the blind is raised or lowered is performed by a human operation, it is not always the case that the optimum angle is obtained once, and it is often the case that the operation must be repeated several times. It can not be said.

Therefore, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an electric blind device capable of opening and closing the angle of a blind blade at a specified angle. .

[0008]

An electric blind device according to the present invention comprises an opening / closing drive means for opening and closing the blade by rotation of an electric motor, an angle detecting means for detecting an angle of the blade, and an angle of the blade for one step. An angle designating unit for designating a stage of the horizontal position of the blade in an odd stage not including, and the blade detected by the angle detecting unit in response to the angle of the blade being designated by the angle designating unit. Control means for opening and closing the blades by the opening and closing drive means so that the angle of 1 corresponds to the angle specified by the angle specifying means.

[0009]

The electric blind device according to the present invention can have equal angle steps on the outdoor side and the indoor side with respect to the horizontal, respectively, and it is easy to recognize the angle setting of the blade and easy to use. In addition, the blades can be controlled accurately and easily with a simple configuration.

[0010]

FIG. 2 is a diagram showing the outline of an electric blind to which an embodiment of the electric blind device of the present invention is applied. First, with reference to FIG. 2, an external configuration of an embodiment of the electric blind device of the present invention will be described.

The power cord 1 and the controller 2 are the control unit 3
Connected to. The controller 2 includes a raising switch 21 for instructing the raising of the blind, a stop switch 22 for instructing the stop, a lowering switch 23 for instructing the lowering, and a slide switch for designating the angle of the slats 13. The slat angle designating switch 24 is provided.

When the slat angle designating switch 24 is set to the "horizontal" position, the slat 13 becomes horizontal. When the slat 13 is moved in the direction A shown in FIG. 2, the slat 13 gradually tilts to the outdoor side and is set to the "closed" position. It will be in a closed state.
Further, when it is moved in the B direction shown in FIG.
Gradually inclines toward the indoor side, and becomes a closed state when it is in the “closed” position.

The control unit 3 includes a microcomputer, a power supply unit, and the like. A geared motor 4 including an electric motor and a reduction gear is connected to the control unit 3. The rotation shaft of the geared motor is connected to the lifting shaft 12 via the coupling 5. The lifting shaft 12 has
The lifting units 6, 7 and 8 are connected.

Sensors, fault switches, and clothing switches (not shown) built in these lifting units 6, 7 and 8 are connected to the control unit 3 by wiring members 9. The wiring member 9 includes wiring to the geared motor 4 and wiring to the controller 2. The lifting units 6 and 8 include a winding drum 16 and a ladder drum 17,
The lifting unit 7 includes only the ladder drum 17.

One end of a lifting tape (which may be a string) may be fixed to the winding drum 16. The other end of the lifting tape 10 is the slats 1
It is fixed to the bottom rail 14 through a through-hole (not shown) provided in No. 3. The take-up drum 16 rotates the lifting shaft 12 and the lifting tape 1
0 is wound or unwound, and the slat 13 and the bottom rail 14 are moved up and down. Also, the ladder drum 17
The one end of the ladder cord 11 is fixed to the bottom rail 14, and the other end of the ladder cord 11 is fixed to the bottom rail 14.

The bottom rail 14 functions as a weight for descending the blind and as a weight for preventing the blind from swaying due to wind or the like after descending. The control unit 3, the geared motor 4, the lifting units 6, 7 and 8 are covered by a head box 15 which constitutes an outer box.

FIG. 3 is a view for explaining an angle adjusting mechanism of an embodiment of the electric blind device of the present invention. Next, the angle adjusting mechanism will be described with reference to FIG.
The ladder cord 11 is, for example, 50 mm of the slats 13,
The cords 11a and 11b are configured as one set with a gap corresponding to a width of 25 mm or 15 mm, and the two ladder cords 11a and 11b are arranged at a gap corresponding to the pitch p of the slats 13, for example, a disciple. Are connected by two horizontal cords 11c and 11d. The slat 13 has ladder codes 11a and 11b and lateral codes 11c and 11b.
It is inserted and held in a rectangle formed by d.

The ladder drum 17 to which one ends of the ladder cords 11a and 11b are fixed is fitted with a frictional force through a drum shaft 31 penetrating the lifting shaft 12. The elevating shaft 12 and the drum shaft 31 rotate integrally (synchronously), but when the ladder drum 17 rotates almost half a turn, the protrusion 32 provided on the ladder drum 17 and the stopper 33 provided on the head box 15 or the like come into contact with each other. When they come into contact with each other, the rotation is stopped, and the drum shaft 31 slips and slips.

Further, when the elevating shaft 12 is reversed, the ladder drum 17 is also reversed in the same manner, but similarly to the above description, it hits the stopper such as the head box 15 and idles. When the rudder drum 17 rotates approximately half a turn, the slat 13 rotates clockwise and the slat 1
The angle of 3 changes.

That is, the slat 13 changes from a state in which it is slanted and closed on the indoor side to a horizontal state, which is opened, and a state in which it is slanted and closed to the outdoor side. Elevating shaft 1
When 2 rotates in the opposite direction to the above description, the slats 13
The angle of changes counterclockwise. That is, the state in which the outdoor side is tilted and closed is changed to the horizontal state and the state is opened, and the indoor side is tilted and closed.

A slit 34 for detecting the rotation of the ladder drum 17 is formed at one end of the ladder drum 17. The slit 34 is formed at an angle corresponding to almost half rotation of the ladder drum 17, and a photo interrupter 35 is provided to detect the position of the slit 34. The photo interrupter 35 detects the position of the slit 34 and converts it into an electric signal. The angle is detected based on this electric signal.

FIG. 4 is a schematic block diagram showing the electrical construction of an embodiment of the electric blind device of the present invention. Next, the electrical configuration will be described. In FIG. 4, the control unit 3 has a microprocessor (hereinafter referred to as MPU).
40 is provided. The switches 21 to 24 of the controller 2 are connected to the MPU 40, and the motor drive circuit 41, the rotation sensor 42, the angle sensor 43, the abnormality sensor 44, and the upper limit sensor 45 are connected.

When the raising switch 21 or the lowering switch 23 is operated, the MPU 40 temporarily raises or lowers the slat 13 and then raises or lowers it, and when the stop switch 22 is operated, the raising / lowering operation is stopped. . When the slat angle designating switch 24 is operated, the MPU 40 controls to change the angle of the slat 13 to the designated angle. In this embodiment, the angle of the slat 13 can be changed in 15 steps by selecting the combination of the signal outputs of the four signal lines 25 with the slat angle designating switch 24.

That is, the slat 13 can be changed in angle in seven steps from the horizontal position to the state where it is tilted on the outdoor side to be closed, and can be changed in seven steps from the horizontal position to the state that it is tilted and closed on the window side. You can change the angle. The number of steps is not limited and may be any odd number, and is determined by how finely the angle is set.

The AC power supply voltage of 100 V is stepped down by the transformer 46 and then rectified by the power supply circuit 47. Then, MPU 40 is supplied with DC power of, for example, 5V, and motor drive circuit 41 is supplied with DC power of, for example, 18V. The motor drive circuit 41 is MPU4.
In response to a signal from 0 indicating normal rotation, reverse rotation, braking, stop, etc., the operation of the DC motor 4 is controlled.

The rotation sensor 42 detects the rotation speed of the DC motor 4. The angle sensor 43 includes the photo interrupter 35 described above. The abnormality sensor 44 detects an abnormality when the blind stops rising or falling for some reason. The upper limit sensor 45 detects that the blind has been fully wound up.

The MPU 40 has a ROM 48 and a RAM 49.
And are provided. The ROM 48 stores an operation program of the MPU 40 based on the flowchart shown in FIG. 1 which will be described later. The RAM 49 is the rotation sensor 4 described above.
2, angle sensor 43, abnormality sensor 44, upper limit sensor 45
The data and the like detected by are stored.

By the way, a plurality of blinds are installed, for example, in a large window. In such a case, it is preferable to link the blinds. By connecting a transmission means for performing data transmission with other blinds to the MPU of this embodiment, it is possible to interlock a plurality of blinds and make the opening degree of each blind match.

FIG. 1 is a blow diagram for explaining the operation of an embodiment of the electric blind device of the present invention. next,
The operation of the embodiment of the present invention will be described with reference to FIGS. With the blinds stopped,
It is assumed that the slats 13 are inclined and closed on the outdoor side. At this time, the knob of the slat angle designating switch 24 is pushed up in the direction A shown in FIG. 2 to the "closed" position. In this state, if the knob of the slat angle designating switch 24 is moved to the "horizontal" position, the MPU4
0 is the slat 13 by the slat angle designating switch 2.
Is found to be newly specified.

Then, it is determined whether the newly designated angle is a clockwise rotation or a counterclockwise rotation of the current angle. Here, since it is heading to the horizontal position from the state where it is tilted and closed on the outdoor side, it is determined to be counterclockwise. Subsequently, the MPU 40 outputs a motor drive command signal to the motor drive circuit 41,
The DC motor 4 is rotated to rotate the elevating shaft 12 counterclockwise. Depending on the rotation of the lifting shaft 12,
The rudder drum 17 rotates, and the MPU
A pulse signal is output to 40.

The MPU 40 detects the pulse signal from the angle sensor 43, and when the present angle and the angle designated by the slat angle designating switch 24 match, outputs a motor stop command signal to the motor drive circuit 41, The DC motor 4 is stopped. In this way, slats 13
Becomes the angle designated by the slat angle designating switch 24, that is, the horizontal position.

Contrary to the above case, when the slat 13 is tilted indoors and is in the horizontal position from the closed state, it is determined that the slat 13 rotates clockwise, and the slat 13 is designated. The DC motor 4 is rotated clockwise until the angle is reached. Even when the knob of the slat angle 24 is changed from an arbitrary position to another arbitrary position, the same operation as described above is performed and the slat 13 is adjusted to the designated angle.

In the above embodiment, the current slat 1 is detected by checking the state of the slat angle designating switch 24.
There is an advantage that it can be determined how much the 3 is opened and closed. Although the slide switch is used to specify the slat angle in the above-described embodiment, the present invention is not limited to this, and a rotary switch, a push button switch, or the like may be used.

[0034]

As described above, according to the present invention, the angle of the blade coincides with the specified angle in response to the operation of the angle specifying means for specifying the angle of the blade of the blind. Since the opening / closing control is performed in a short time, the angle adjustment of the blade can be performed very easily and accurately. Moreover, it is possible to have even angle steps on the outdoor side and the indoor side with respect to the horizontal, which makes it easy to recognize the angle setting of the blades and is convenient.
In addition, the blades can be controlled accurately and easily with a simple configuration.

[Brief description of drawings]

FIG. 1 is a flow chart for explaining the operation of an embodiment of the present invention.

FIG. 2 is a diagram showing an outline of an electric blind to which an embodiment of the present invention is applied.

FIG. 3 is a view for explaining the angle adjusting mechanism of the embodiment of the present invention.

FIG. 4 is a schematic block diagram showing an electrical configuration of an embodiment of the present invention.

[Explanation of symbols]

 2 controller 3 control unit 4 DC motor 6,7,8 lifting unit 11 ladder code 12 lifting shaft 13 slats 17 ladder drum 24 slat angle designation switch 34 slits 35 photo interrupter 40 MPU 41 motor drive circuit 43 angle sensor 48 ROM 49 RAM

Claims (1)

[Claims] 1. An electric blind device for opening and closing a blade of a blind according to the rotation of an electric motor, the opening and closing drive means for opening and closing the blade by the rotation of the electric motor, an angle detecting means for detecting an angle of the blade, Angle designating means for designating the angle of the blade in odd stages not including one stage, including stages of the horizontal position of the blade, and the angle according to the fact that the angle of the blade is designated by the angle designating means. An electric blind device comprising a control means for opening and closing the blade by the opening and closing drive means so that the angle of the blade detected by the detection means matches the angle designated by the angle designating means.