JPH0645992B2 - Electric blind device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric blind device, and more particularly, it has first and second blinds attached to different window frames,
The present invention relates to an electric blind device capable of matching the elevation position of a second blind and the angle of a blade with the first blind.

[Problems to be Solved by Conventional Techniques and Inventions] Among the electric blinds currently proposed and sold on the market, one is a master unit, the other is a slave unit, and by operating the master unit, There is something that can simultaneously raise and lower the electric blinds of the child machine. In such a conventional electric blind, as a method of simultaneously raising and lowering a plurality of blinds,
The time control method is adopted, and the electric motor of each blind is rotated for a certain period of time.

However, the rotation speeds of the electric motors are not always the same, and when they are operated all at once and stopped after a certain period of time, the heights of the blinds and the opening and closing degrees of the blades become uneven. In particular, when the weight of the blind is different, it is more difficult to uniformly control the height of the blind and the opening / closing degree of the blade because the load of the electric motor is different.

Therefore, a main object of the present invention is to provide an electric blind device capable of easily matching the raising / lowering position of the blind and the angle of the blade of the slave unit to the master unit.

[Means for Solving Problems] The present invention relates to an electric blind device having a first blind and a second blind which are respectively raised and lowered by rotation of an electric motor, open and close blades, and are attached to different window frames. Yes, first position detecting means for detecting an ascending or descending position of the first blind, first angle detecting means for detecting an angle of a blade of the first blind, and second
Position detecting means for detecting the rising or lowering position of the blind, the second angle detecting means for detecting the angle of the blades of the second blind, and the elevating means for elevating the second blind by the rotation of the electric motor. And an opening / closing means for opening and closing the blade of the second blind by the rotation of the electric motor,
Instructing means for instructing to match the ascending / descending position of the second blind and the angle of the blade with the first blind, and the position data of the second position detecting means is in accordance with the instruction of the instructing means. The second blind is raised or lowered by the elevating means until the position data is detected by the position detecting means, and the angle data detected by the second angle detecting means becomes the angle data detected by the first angle detecting means. And a control unit that controls the opening and closing unit to open and close the blades of the second blind until they match.

[Operation] In the electric blind device according to the present invention, in response to a command for instructing that the raising / lowering position of the second blind and the angle of the blade match the first blind,
The second blind is moved up and down until the elevating position data of the second blind matches the elevating position data of the first blind, and the second blind is rotated until the angle data of the second blind matches the angle data of the first blind. Since the blades of the second blind are opened and closed, the heights and the degrees of opening and closing of the plurality of blinds can be easily unified.

[Embodiment] FIG. 2 is a diagram showing an outline of an electric blind to which an embodiment of the present invention is applied. First, with reference to FIG. 2, an external configuration of an electric blind to which an embodiment of the present invention is applied will be described. Power cord 1 and controller 2
Is connected to the control unit 3. The controller 2 includes a set switch 20 for transmitting the data of the master unit to the slave unit,
A raising switch 21 for instructing an ascent, a stop switch 22 for instructing a stop, a lowering switch 23 for instructing a descent, an open switch 24 for instructing to open the slat 13, and a closing for giving a command to close the slat 13. And a switch 25. 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 4 is connected to the elevating shaft 12 via the coupling 5. Elevating units 6, 7 and 8 are connected to the elevating shaft 12. Sensors, fault switches (not shown), and upper limit switch 16 built in these lifting units 6, 7 and 8 are connected to the control unit 3 by a wiring member 9. The wiring member 9 includes wiring to the geared motor 4 and wiring to the controller 2. The elevating units 6 and 8 include a winding drum 37 and a ladder drum 39, and the elevating unit 7 includes only a ladder drum 9. The winding drum 37 has
One end of a lifting tape (which may be string-shaped) is fixed. Lifting tape 10
The other end of the bottom rail 1 penetrates the plurality of slats 13 and
It is fixed at 4. Then, the winding drum 37 winds or unwinds the lifting tape 10 as the lifting shaft 12 rotates, and lifts the slats 13 and the bottom rail 14. Also, the ladder drum 39 has
One end of the ladder cord 11 is fixed, the ladder cord 11
The other end of is fixed to the bottom rail 14. And
The ladder drum 39 rotates with the rotation of the elevating shaft 12, and controls the opening degree of the slats. The bottom rail 14 functions as a weight for lowering the blind and a weight for preventing the blind from swaying due to wind after descent.

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. An upper limit switch 16 is provided below the head box 15. The upper limit switch 16 is pressed by the slats 13 to operate when the blind is wound, and detects the upper limit position.

FIG. 3 is a schematic block diagram of an electric blind to which an embodiment of the present invention is applied. Next, referring to FIG.
The electrical configuration of the electric blind to which the embodiment of the present invention is applied will be described. AC power is input to the power transformer 31 via the power cord 1. The power supply transformer 31 steps down the input AC power supply and supplies a low voltage to the stabilized power supply unit 32 to generate the power supply necessary for the control unit 3 and the geared motor 4. A motor drive circuit 33 is connected to the microprocessor (hereinafter referred to as MPU) 34, and controls the geared motor 4 in the normal rotation, reverse rotation or brake mode in response to a command from the MPU 34.

Here, the brake mode is to short-circuit the input terminals of the geared motor 4 via the motor drive circuit 33. By short-circuiting between the input terminals of the geared motor 4 in this way, the brake is applied to the geared motor 4. You can call. That is, for example, the inertia caused by the descent of the blind or the case where the blind is strongly pulled in the direction of artificial descent mechanically causes the geared motor 4 to mechanically move.
When a rotational force is applied to the geared motor 4, a back electromotive force, which is the principle of a DC generator, is generated, and by short-circuiting between the input terminals, a direction in which this rotation is blocked, that is, a current for reverse rotation flows, and The motor 4 will stop. A voltage detection circuit 35 is connected to the MPU 34.
The voltage detection circuit 35 supplies the power supply Vcc to the control unit 3.
It detects the voltage of. That is, the voltage detection circuit 35 outputs the voltage supplied from the power cord 1 to the transformer 3
It is monitored on the low voltage side via 1.

The obstacle switch 36 is built in the lifting unit 6, and if the geared motor 4 continues to rotate in the descending direction when it hits an obstacle or the like while the blind is descending and the descending operation is stopped. If the lifting tape 10 is loosened and further continued, the lifting tape 10 deviates from the take-up drum 37, and the lifting tape 10 cannot be taken up even if the blind is raised next time, which causes a serious failure. become.

In order to prevent this, the slack of the lifting tape 10 is detected by a mechanical switch or an optical or magnetic sensor, and the detection output is input to the MPU 34,
The geared motor 4 is stopped via the motor drive circuit 33. That is, the motor drive circuit 33 is set to the brake mode. Further, the MPU 34 reverses the geared motor 4 for an arbitrary time and winds up the blind to eliminate the slack of the lifting tape 10, and then stops the geared motor 4.

The take-up drum 37 rotates with the geared motor 4,
Winding or rewinding the lifting tape 10,
The blind is moved up and down, and includes guides 371 and 372 of the lifting tape 10. A slit 373 is formed around the guide 371, for example. A disc may be attached to the other part of the elevating shaft 12 separately from the winding drum 37, and a slit may be formed in the disc to rotate the elevating shaft 12, the geared motor 4, or the motor of the geared motor 4. Even if the rotation of the shaft is detected, the same effect can be obtained, so that the mounting position and method are not limited.

A photo interrupter 38 is provided in association with the guide 371 of the winding drum 37. The photo interrupter 38 optically detects the connection / disconnection of the slit 373 formed in the guide 371 of the winding drum 37, and the lift shaft 12
Is converted into an electric signal and input to the MPU 34. That is, the MPU 34 can know the amount of lifting or lowering of the lifting tape 10 by an electric signal by the rotation of the winding drum 37. One end of the ladder cord 11 is fixed to the ladder drum 39 as described above, and the slat 1 is rotated by the rotation of the ladder drum 39.
The angle of 3 is changed to change the incident amount of external light to make the room have an appropriate brightness or block the external light.

The ladder drum 39 is fitted in a frictional state via a drum shaft 40 penetrating the lifting shaft 12. The elevating shaft 12 and the drum shaft 40 rotate integrally (synchronously), but when the ladder drum 39 makes a half rotation,
The rotation is stopped by a protrusion (not shown) provided on the head box 15 or the drum receiver, and the drum shaft 4
Slip to 0 and spin. Further, when the elevating shaft 12 is reversed, the ladder drum 39 is also reversed in the same manner, but similarly to the above description, it hits a protrusion such as the head box 15 and spins idle. When the ladder drum 39 rotates about half a turn, the slat 13 rotates clockwise, and the angle of the slat 13 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 where it is opened and is slanted and closed to the outdoor side. When the elevating shaft 12 rotates in the direction opposite to that described above, the angle of the slats 13 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 391 for detecting the rotation of the ladder drum 39 is formed at one end of the ladder drum 39. The slit 391 is formed at an angle corresponding to almost half rotation of the ladder drum 39.
A photo interrupter 41 is provided to detect the position of 1. The photo interrupter 41 detects the position of the slit 391 and converts the slit 391 into an electric signal.
Give to 4. The MPU 34 can know the angle of the ladder drum 39, that is, the angle of the slat 13 according to the electric signal. The lower limit setting switch 42 is for setting the lower limit position when lowering the blind.
It consists of two switches. It should be noted that the lower limit setting switch 42 is not limited to this number and may be any number, and is determined by how finely the setting range of the lower limit position is set. The transmission circuit 50 and the reception circuit 60 are for exchanging blind position data, slat angle data, and the like with other electric blinds.
It is connected to the signal line 70.

The switches 20 to 25, the clock generation circuit 43 and the reset circuit 44 of the controller 2 are the MPU3.
4 is connected.

Here, a method of operating an electric blind device according to an embodiment of the present invention and its operation will be described.

When the lowering switch 23 of the controller 2 is operated, M
The PU 34 gives a control signal to the motor drive circuit 33 to rotate the geared motor 4. That is, the geared motor 4
Rotates the elevating shaft 12 in the direction of lowering the blind, and the winding drum 37 causes the lifting tape 1
Rewind 0 and lower the blinds. Winding drum 37
Along with the rotation, the slit 373 formed in the guide 371 interrupts the photo interrupter 38 and gives a pulse signal as a rotation signal to the MPU 34. MPU34
Can count this pulse signal and determine the amount of blind drop by the count value.

Unless the stop switch 22 of the controller 2 is operated, the MPU 34 further lowers the blind and continues to count the pulse signal from the photo interrupter 38. When the value set by the lower limit setting switch 42 and the count value of the pulse signal from the photo interrupter 38 match, the MPU 34 determines that the blind has dropped to the lower limit position, and sets the motor drive circuit 33 to the brake mode. To do. As a result, the motor drive circuit 33 stops the geared motor 4 and stops the descent of the blind. Here, if the set value of the lower limit setting switch 42 is changed to an arbitrary value, the descent position of the blind can be arbitrarily changed accordingly.

FIG. 4 is a diagram showing an electric blind device according to an embodiment of the present invention, which is configured by connecting a plurality of electric blinds shown in FIGS. 2 to 3. The electric blinds 100a to 100n are connected to the signal line 70, respectively. Here, the electric blind 100a is used as a master unit and the other is used as a slave unit. However, all the electric blinds have exactly the same configuration, function as a master unit, and function as a slave unit. It may be a machine. Whether it functions as a master unit depends on whether the set switch 20 of the controller 2 is operated. In general, both the master unit and the slave unit perform the raising / lowering / stopping of the blind or the opening / closing operation of the slat 13 in accordance with the instructions of the various switches 21 to 25 of the controller 2 connected thereto. Specifically, each MPU 34 sends the MPU 34 the respective pulse numbers from the photo interrupters 38 and 41 as position data indicating the ascending position or descending position when the blind is stopped and angle data indicating the angle of the slat 13. Stored in included memory. The stored data changes as the blind changes, and the latest data is always stored.

FIG. 1A and FIG. 1B are flow charts for explaining a concrete operation of one embodiment of the present invention, and particularly, FIG.
The figure shows the operation of the parent machine, and FIG. 1B shows the operation of the child machine.
Next, a specific operation of the embodiment of the present invention will be described with reference to FIGS. 1A to 4.

MPU of electric blind 100a used as a master unit
Reference numeral 34 stands by until one of the switches 20 to 25 of the controller 2 is operated, and in response to any one of the switches being operated, an operation corresponding to each switch is performed. Here, for example, when the lowering switch 23 is operated, the MPU 34 drives the geared motor 4 via the motor drive circuit 33 to lower the blind. That is, as the geared motor 4 rotates, the winding drum 37 is rotated to rewind the lifting tape 10 and lower the blind. When the winding drum 37 rotates, the slit 373 formed in the guide 371.
Is intermittently applied to the MPU 34 as a pulse signal by interrupting the output signal of the photo interrupter 38. The MPU 34 counts the pulse signals from the photo interrupter 38 until any switch of the controller 2 is operated, and stores the count value in the memory. Here, the stop switch 22
Is operated, the MPU 34 sets the motor drive circuit 33 to the brake mode to stop the geared motor 4 and stop the descent of the blind. By this, MPU3
The memory 4 stores the count value up to the stop position. Although not shown in FIG. 1A, the operation of raising the blind and adjusting the opening / closing of the slat 13 can also be performed by rotating the geared motor 4 in the normal or reverse direction according to the signal from each switch. The output pulse of the photo interrupter 38 or 41 is counted, and the count value is stored in the memory as in the above-described descending operation. The count value from the photo interrupter 41 is stored in the memory as angle data indicating the opening / closing degree of the slats 13.

The MPU 34 then waits until one of the switches of the controller 2 is operated, where, for example, when the set switch 20 is operated, the blind raised or lowered position stored in the memory. The data and the angle data are transmitted from the transmission circuit 50 to the blinds 100b to 100n of the child device via the signal line 70.

The slave units 100b to 100n are the switch 2 of the controller 2.
Any one of 0 to 25 is operated, or the base unit 10
0a is received, and when any switch is operated, operations such as raising, lowering, opening and closing of the slat 13 are performed based on the signal from each switch. If none of the .about.25 is operated and a signal from the base unit 100a is received via the receiving circuit 60, the data is read and stored in the memory included in the MPU 34. Next, the MPU 34 is the base unit 100.
The ascending or descending position data given from a is compared with the position data stored in the memory as data representing the state of the blind of itself, and the geared motor 4 is rotated normally or reversely based on the comparison result. To raise or lower the blind. The MPU 34 counts the output pulses of the photo interrupter 38, and when the count value matches the count value given from the parent device 100a, stops the geared motor 4. Subsequently, the MPU 34 determines whether or not the data of the slat angle of itself matches the data given from the base unit 100a, and if they match, it waits as it is, but if they do not match, the geared motor 4 is turned on. The ladder drum 39 is rotated in the forward direction or the reverse direction, thereby rotating the ladder drum 39 and changing the opening / closing degree of the slat 13. The MPU 34 counts the number of output pulses of the photo interrupter 41, compares the count value with the count value given from the parent device 100a, and when the count values match, stops the geared motor 4. As a result, each child device 100b-
Since 100n has the same vertical height as the base unit 100a and the slats have the same angle, all blinds are in a unified state.

[Effects of the Invention] As described above, according to the present invention, the first blind is commanded to match the elevating position of the second blind and the angle of the blade with the first blind. Two
The second blind is moved up and down until the elevation position data of the second blind matches the elevation position data of the first blind, and the second blind is rotated until the angle data of the second blind coincides with the angle data of the first blind. Since the blade angles of the blinds are opened and closed, even if the rotation speeds of the motors of the blinds do not match, the power supply voltages related to the motors vary, and the weights of the blinds differ. , It is possible to unify the height of all blinds and the angle of the blades.

[Brief description of drawings]

1A and 1B are flow charts for explaining a specific operation of the 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 schematic block diagram of an electric blind to which an embodiment of the present invention is applied. Figure 4 is second
It is a figure which shows the electric blind apparatus of one Example of this invention comprised by connecting several electric blinds shown in FIG. 3 thru | or FIG. In the figure, 2 is a controller, 3 is a control unit, 4 is a geared motor, 6, 7 and 8 are lifting units, 10 is a lifting tape, 11 is a ladder cord, 12 is a lifting shaft, 13 is a slat, 14 is a bottom rail, 20 is a set switch, 33 is a motor drive circuit, 34 is an MPU, 3
7 is a winding drum, 38 and 41 are photo interrupters, 3
9 is a ladder drum, 50 is a transmitting circuit, 60 is a receiving circuit,
70 is a signal line, and 100a to 100n are electric blinds.

Claims (1)

[Claims] 1. An electric blind device having a first blind and a second blind which are respectively raised and lowered by rotation of an electric motor, open and close blades, and are attached to different window frames, the first blind. Position detecting means for detecting an ascending or descending position of the first blind, a first angle detecting means for detecting an angle of a blade of the first blind, and a first position detecting means for detecting an ascending or descending position of the second blind. 2 position detecting means, second angle detecting means for detecting the angle of the blades of the second blind, elevating means for elevating and lowering the second blind by rotation of the electric motor, and rotation of the electric motor. An opening / closing means for opening and closing the blades of the second blind, and an up-and-down position of the second blind and an angle of the blades for the first blind. Until the position data detected by the second position detecting unit coincides with the position data detected by the first position detecting unit according to the command of the commanding unit While elevating or lowering the second blind by the elevating means,
Control means for controlling the opening and closing means to open and close the blades of the second blind until the angle data detected by the second angle detection means coincides with the angle data detected by the first angle detection means. Electric blind device equipped with.