JP7368980B2 - electric switchgear - Google Patents

Description

In the present invention, a rotary encoder detects the rotation angle and rotation direction of a drive shaft of an electric motor that drives an opening/closing object such as a curtain or a louver, and a controller controls the electric motor based on the detection output of the rotary encoder. The present invention relates to a constructed electric switching device.

Conventionally, a drive shaft that drives the shielding material is rotationally driven by an electric motor, the amount of rotation of the drive shaft is detected by a detection means, and a control device recognizes the position of the shielding material based on a detection signal output from the detection means. However, an electric solar shading device configured to control the operation of an electric motor based on a command signal is disclosed (for example, Patent Document 1 (Claims 1 and 4, paragraphs [0002] and [0045] , see Figure 1). In this electric solar shading device, the electric motor is disposed in the head box, and the driving force of the electric motor is used to raise and lower the slats and to adjust the angle thereof. Further, the detection means includes a rotary encoder that detects a slit of a slit plate that rotates together with the drive shaft and outputs two-phase rectangular waves having different phases as a detection signal. The position information calculation means is configured to calculate a count value obtained by counting pulse signals based on the detection signal and a level value of the detection signal when the electric motor is stopped, as position information of the shielding material. Further, the power cutoff device is configured to cut off power to the detection means when the electric motor is stopped.

In the electric solar shading device configured in this way, when the operation of the electric motor is stopped based on the command signal, the power supply to the rotary encoder is cut off by the power cutoff device. Therefore, when the slat is not raised or lowered or the angle is adjusted, the detection operation by the rotary encoder is stopped, and the power consumption by the rotary encoder can be reduced.

Japanese Patent Application Publication No. 2011-196045

However, in the electric solar shading device disclosed in Patent Document 1, the electric motor rotates to raise and lower the slats or adjust the angle by operating a switch such as a wireless switch or a wired switch, and then the electric motor stops. When the slats stop moving up and down or the angle adjustment stops, the detection operation by the rotary encoder stops, so even if you operate the curtain by hand in this state, the controller will not be able to operate the electric motor. There was an issue where the touch motion function could not be used. For this reason, in an electric solar shading device with a touch motion function, even if the electric motor stops and the slat elevation or angle adjustment stops, the rotary encoder must continue the detection operation, reducing the power consumption of the rotary encoder. There was a problem that I couldn't do it. Note that the touch motion function is a function in which a rotary encoder detects the movement and direction of the curtain when the curtain is operated by hand, and the controller operates the electric motor based on the detection output.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric switching device that can properly perform a touch motion function and reduce power consumption of a rotary encoder.

A first aspect of the present invention is that, as shown in FIGS. 1, 2, 6, 11, 12, and 15, an electric motor 12 that drives an opening/closing body 11 and a drive shaft 12a of the electric motor 12 are connected to each other. An electric switchgear including a rotary encoder 13 that detects a rotation angle and a rotation direction as rectangular wave pulse signals of two or more phases with different phases, and a controller 14 that controls an electric motor 12 based on the detection output of the rotary encoder 13. , the rotary encoder 13 optically or magnetically detects the rotation angle and rotation direction of the drive shaft 12a of the electric motor 12 as pulse signals of two or more phases with different phases, and converts the detected signals into electrical signals. A trigger that includes elements 21a and 21b, and in which an operation start signal of the electric motor 12 is detected by two or more detection conversion elements 21a and 21b and input to the controller 14 when the opening/closing body 11 is manually moved by a predetermined amount or more as a trigger. The controller 14 stores the signal waveform pattern of the rotary encoder 13 at the stop position of the electric motor in the memory 14a when the two or more detection conversion elements 21a and 21b detect the operation stop signal of the electric motor 12. At the same time, while maintaining the power supply to one detection conversion element 21a among the two or more detection conversion elements 21a and 21b, the power supply to the other detection conversion element 21b is stopped, and the opening/closing body 11 is manually moved. When the first detection conversion element 21a detects the trigger signal, the supply of power to the other detection conversion element 21b is started, and when the two or more detection conversion elements 21a and 21b detect the trigger signal, The present invention is characterized in that it is configured to determine the rotational direction of the electric motor 12 based on the detection outputs of the detection conversion elements 21a and 21b and the signal waveform pattern.

A second aspect of the present invention is an invention based on the first aspect, and as shown in FIGS. 1, 2, and 6, a rotary encoder is fixed to the case 12b side of the electric motor 12 and emits light. Light emitting elements 18a, 18b that emit light, and first and second fixed slits 19a, 19b that are fixed to the case 12b side of the electric motor 12 so as to face the light emitting elements 18a, 18b, and through which the light emitted by the light emitting elements 18a, 18b passes. is fixed to the case 12b side of the electric motor 12 and the fixed slit plate 19 formed at a first interval _P1 , and receives the light that has passed through the first and second fixed slits 19a and 19b and converts it into an electrical signal. The drive shaft is located between the first and second detection conversion elements 21a, 21b consisting of light receiving elements, and the light emitting elements 18a, 18b and the fixed slit plate 19, or between the fixed slit plate 19 and the detection conversion elements 21a, 21b. A plurality of rotating slits 22a are attached to the drive shaft 12a so as to rotate together with the light emitting elements 12a, and a plurality of rotating slits _22a are formed on the same circumference at a second interval _P2 different from the first interval P1. It has a rotating slit plate 22 that allows the emitted light to pass through or block it,

A third aspect of the present invention is an invention based on the first aspect, further comprising a rotary encoder fixed to a drive shaft of an electric motor so as to be rotatable together with the drive shaft, and a magnetic pattern formed therein. It is characterized by having a rotating disk, and first and second detection conversion elements that are fixed to the case side of the electric motor and are composed of magnetic sensors that detect the magnetic pattern of the rotating disk and convert it into an electric signal.

A fourth aspect of the present invention is an invention based on the second aspect, and further, as shown in FIGS. 2, 3, and 6, the controller 14 includes first and second detection conversion elements 21a and 21b. A position that is closest to the stop position of the electric motor 12 when the stop of operation of the electric motor 12 is detected, and a position where the first and second detection conversion elements 21a and 21b do not receive the light emitted by the light emitting elements 18a and 18b. It is characterized in that the electric motor 12 is controlled to rotate the rotating slit plate 22 forward or reverse until it stops.

A fifth aspect of the present invention is an invention based on the second or fourth aspect, in which, as shown in FIG. 2, FIG. 6, FIG. 11, and FIG. The controller 14 includes first and second light emitting elements 18a and 18b provided to face the elements 21a and 21b, respectively, and when the supply of power to the second detection conversion element 21b is stopped, the controller 14 controls The supply of power to the second light emitting element 18b facing the second detection conversion element 21b is also stopped, and at the time of starting the supply of power to the second detection conversion element 21b, the power supply to the second light emitting element 18b facing the second detection conversion element 21b is stopped. It is characterized in that it is configured to also start supply.

A sixth aspect of the present invention is an invention based on the second or third aspect, in which, as shown in FIGS. 2 , 3, 13, and 14, the operation start signal of the electric motor 12 is This is a switch signal that is input to the controller 14 based on the operation, and the controller 14 determines the stop position of the electric motor when the first and second detection conversion elements 21a and 21b detect the operation stop signal of the electric motor 12. The signal waveform pattern of the rotary encoder 13 is stored in the memory 14a, the power supply to the second detection conversion element 21b is stopped, and when a switch signal is input, the rotation direction of the electric motor 12 is changed based on the switch operation. The second detection conversion element 21b is characterized in that it is configured to start supplying power to the second detection conversion element 21b.

A seventh aspect of the present invention is an invention based on any one of the first to sixth aspects, in which, as shown in FIGS. 4, 15, and 16, the electric motor 12 A plurality of runners 17 are attached to the end of a head rail 16 attached to the ceiling and movable along the head rail 16, and the opening/closing body 11 is suspended from the plurality of runners 17. An opening/closing body moving mechanism 29 is provided between the leading runner 17a of the runners 17 and the electric motor 12, and the driving force of the electric motor 12 is transmitted to the leading runner 17a via the opening/closing body moving mechanism 29. It is characterized in that the opening/closing body 11 is configured to move when the runner 17a moves along the head rail 16 and the following runner 17b follows.

An eighth aspect of the present invention is an invention based on the seventh aspect, in which the opening/closing body includes a curtain 11 or a plurality of louvers movable along the head rail 16, as shown in FIGS. It is characterized by

In the electric switchgear according to the first aspect of the present invention, when the two or more detection and conversion elements detect an operation stop signal of the electric motor, the controller transmits a signal to one of the two or more detection and conversion elements. While maintaining the power supply, power supply to other detection conversion elements is stopped, and when one detection conversion element detects manual movement of the opening/closing body, power supply to the other detection conversion elements is stopped. The power consumption of the rotary encoder can be reduced. Further, when two or more detection conversion elements detect an operation stop signal of the electric motor, the controller stores the signal waveform pattern of the rotary encoder at this stop position in the memory, and detects manual movement of the opening/closing body by one detection. When a conversion element detects, the supply of power to other detection conversion elements is started, and when two or more detection conversion elements detect a trigger signal, the detection output of two or more detection conversion elements and the above-mentioned signal Since the rotation direction of the electric motor is determined based on the waveform pattern, the touch motion function can be properly performed.

In the electric switchgear according to the second aspect of the present invention, when the first and second detection conversion elements including the first and second light receiving elements detect the operation stop signal of the electric motor, the controller detects the operation stop signal of the electric motor. Since the power supply to the second light receiving element is started when the first light receiving element detects manual movement of the opening/closing body, the power consumption of the rotary encoder can be reduced. Further, when the first and second light receiving elements detect the operation stop signal of the electric motor, the controller stores the signal waveform pattern of the rotary encoder at this stop position in the memory, and controls the manual movement of the opening/closing body from the first When the light receiving element detects, power supply to the second light receiving element is started, and when the first and second light receiving elements detect the trigger signal, the detection output of the first and second light receiving elements and the above-mentioned Since the rotation direction of the electric motor is determined based on the signal waveform pattern, the touch motion function can be properly performed.

In the electric switchgear according to the third aspect of the present invention, when the first and second detection conversion elements including the first and second magnetic sensors detect the operation stop signal of the electric motor, the controller detects the operation stop signal of the electric motor. Since the power supply to the second magnetic sensor is started when the first magnetic sensor detects manual movement of the opening/closing body, the power consumption of the rotary encoder can be reduced. Further, when the first and second magnetic sensors detect the operation stop signal of the electric motor, the controller stores the signal waveform pattern of the rotary encoder at this stop position in the memory, and controls the manual movement of the opening/closing body from the first one. When the magnetic sensor detects, the supply of power to the second magnetic sensor is started, and when the first and second magnetic sensors detect the trigger signal, the detection outputs of the first and second magnetic sensors and the above-mentioned Since the rotation direction of the electric motor is determined based on the signal waveform pattern, the touch motion function can be properly performed.

In the electric switchgear according to the fourth aspect of the present invention, the controller stops the electric motor when the first and second detection conversion elements including the first and second light receiving elements detect the electric motor operation stop signal. The electric motor is controlled so as to rotate the rotating slit plate in the forward or reverse direction and stop the rotating slit plate to a position that is closest to the position where the first and second light receiving elements do not receive the light emitted by the light emitting element. Neither the second light receiving element receives the light emitted by the light emitting element. Furthermore, when the first and second light receiving elements detect that the electric motor has stopped operating, the controller stops supplying power to the second light receiving element. As a result, power is not supplied to the second light receiving element, and the first light receiving element is blocked from light from the light emitting element by the rotating slit plate and does not operate, so that the power consumption of the rotary encoder can be further reduced.

In the electric switchgear according to the fifth aspect of the present invention, the light emitting element is composed of first and second light emitting elements provided opposite to first and second detection conversion elements composed of first and second light receiving elements, respectively. When the controller stops supplying power to the second light-receiving element, it also stops supplying power to the second light-emitting element facing the second light-receiving element, thereby further reducing power consumption of the rotary encoder.

In the electric switchgear according to the sixth aspect of the present invention, the controller detects an operation stop signal of the electric motor by the first and second detection conversion elements including the first and second light receiving elements or the first and second magnetic sensors. When this occurs, the power supply to the second detection conversion element is stopped, and when a switch signal is input, the rotation direction of the electric motor is determined based on the switch operation, and the power supply to the second detection conversion element is stopped. The power consumption of the rotary encoder can be reduced. Furthermore, when the first and second detection and conversion elements detect the electric motor operation stop signal, the controller stores in the memory the signal waveform pattern of the rotary encoder at this stop position. function can be performed normally.

In the electric opening/closing device according to the seventh aspect of the present invention, an electric motor is attached to the end of a head rail attached to a window frame, etc., a plurality of runners are attached to the head rail so as to be movable along the head rail, and a plurality of runners are attached to the head rail so as to be movable along the head rail. The opening/closing body is suspended from the runner, and an opening/closing body moving mechanism is provided between the first runner among the multiple runners and the electric motor, so the driving force of the electric motor is transferred to the first runner via the opening/closing body moving mechanism. The leading runner moves along the head rail and the following runners follow, thereby opening and closing the opening/closing body. Then, as described above, when the first and second detection conversion elements consisting of the first and second light receiving elements or the first and second magnetic sensors detect the operation stop signal of the electric motor, the controller detects the operation stop signal of the electric motor. Since power supply to the detection conversion element is stopped, power consumption of the rotary encoder can be reduced. Further, as described above, when the first and second detection and conversion elements detect the electric motor operation stop signal, the controller stores the signal waveform pattern of the rotary encoder at this stop position in the memory, and When the first detection and conversion element detects manual movement, power supply to the second detection and conversion element is started, and when the first and second detection and conversion elements detect a trigger signal, the first and second detection and conversion elements start supplying power to the second detection and conversion element. Since the rotational direction of the electric motor is determined based on the detection output of the second detection conversion element and the signal waveform pattern, the touch motion function can be normally performed.

In the electric opening/closing device according to the eighth aspect of the present invention, since the opening/closing body is a curtain or a plurality of louvers that can be moved along the head rail, the controller can operate the electric opening/closing device by manually moving a predetermined amount or more or by operating a switch. By operating the motor, the curtain or louver can be moved to a fully closed position or fully open position, or to a desired position based on a stop operation of a switch, and then stopped. After the opening/closing body is stopped, the controller stops supplying power to the second detection conversion element, which is the second light receiving element or the second magnetic sensor. As a result, the touch motion function can be performed normally, and the power consumption of the rotary encoder can be reduced.

(a) is a front view of the electric opening/closing device showing a state in which the leading runner according to the embodiment of the present invention is stopped at an intermediate position, and (b) is a front view of the electric switching device showing the state in which the leading runner according to the embodiment of the present invention is stopped, and FIG. FIG. 2 is a diagram showing a pulse waveform of a rotary encoder in a state where power supply to two light receiving elements is stopped and a signal waveform pattern at a stop position thereof. When the curtain has stopped at the opening/closing limit position stored in advance, (a) is a cross-sectional configuration diagram of the main part showing a state in which the rotary slit plate of the rotary encoder has stopped at the physical limit position, and (b) ) is a cross-sectional configuration diagram of main parts showing a state in which the rotating slit plate is stopped at an actual stop position. (a) is a front view of the electric opening/closing device showing a state in which the first runner has stopped at the curtain opening/closing limit position stored in advance, and (b) is a front view of the electric opening/closing device in which the rotating slit plate is moved from the physical limit position of the curtain to the actual opening/closing device. FIG. 3 is a diagram showing a pulse waveform of a rotary encoder indicating that the rotary encoder returns to a stop position and stops. It is a cross-sectional configuration diagram showing a state in which the head rail of the electric opening/closing device is cut vertically in its longitudinal direction. FIG. 2 is a perspective view of the electric motor, electromagnetic clutch, and rotary encoder of the electric opening/closing device with the encoder cover removed. It is a configuration diagram combining an exploded perspective view of the electric motor, electromagnetic clutch, and rotary encoder of the electric opening/closing device with the encoder cover removed, and a block diagram including a controller that controls them. It is a flowchart figure for storing the closing limit position of a curtain in advance. When the curtain of the electric opening/closing device stops based on a stop signal from the outside, (a) shows the cross-sectional configuration of the main part corresponding to FIG. 2 (a) showing the timing when the rotating slit plate receives the stop signal. 2(b) is a cross-sectional configuration diagram of a main part corresponding to FIG. 2(b) showing the actual stopping position of the rotating slit plate. (a) is a front view of the electric opening/closing device showing a state in which the leading runner has stopped based on an external stop signal, and (b) is a front view of the electric switchgear in which the rotating slit plate moves from the timing when the stop signal is received to the actual stop position. It is a figure which shows the pulse waveform of a rotary encoder which shows advance and a stop. It is a flowchart figure which shows the operation|movement when each intermediate position of a curtain is memorize|stored in memory in advance. It is a flowchart figure which shows the operation|movement of the first half of demonstrating a touch motion function with respect to the curtain at an intermediate position, moving a curtain in the direction to close, and stopping a curtain at a fully closed position or an intermediate position. It is a flowchart figure which shows the operation|movement of the latter half of demonstrating a touch motion function with respect to the curtain at an intermediate position, and moving a curtain in the direction of closing, and stopping a curtain at a fully closed position or an intermediate position. It is a flowchart figure which shows the operation|movement of the first half of moving a curtain in the direction to close based on operation of a remote control switch with respect to the curtain in an intermediate position, and stopping a curtain in a fully closed position or an intermediate position. It is a flowchart figure which shows the operation|movement of the latter half of moving a curtain in the direction which closes a curtain based on operation of a remote control switch with respect to an intermediate position, and stopping a curtain at a fully closed position or an intermediate position. It is a front view showing the state where the curtain of the electric opening/closing device is unfolded and the window is fully closed. It is a front view showing a state where the curtain of the electric opening/closing device is folded and the window is fully opened.

Next, a mode for carrying out the present invention will be explained based on the drawings. As shown in FIGS. 1, 6, and 15, the electric opening/closing device has an electric motor 12 that drives the opening/closing curtain 11, which is an opening/closing body, and a drive shaft 12a of the electric motor 12 whose rotation angle and rotation direction are different from each other in phase. It includes a rotary encoder 13 that detects a two-phase rectangular wave pulse signal, and a controller 14 that controls the electric motor 12 based on the detection output of the rotary encoder 13. As shown in FIGS. 1, 15, and 16, the electric motor 12 is attached to one end of a head rail 16 attached to a window frame, wall, or ceiling. A plurality of runners 17 are attached which are movable. Curtains 11 are hung from these runners 17 (FIGS. 15 and 16).

On the other hand, a rotary encoder has two or more detection conversion elements that optically or magnetically detect the rotation angle and rotation direction of the drive shaft of an electric motor as pulse signals of two or more phases with different phases, and convert the detected signals into electrical signals. . Here, the rotary encoder outputs a pulse train according to the amount of rotational displacement of the drive shaft of the electric motor, counts the number of output pulses with a counter, and detects the rotation amount by the number of counts, so that the reference position can be arbitrarily set. An incremental encoder that allows you to select an infinite number of rotation coefficients, outputs the rotation angle of the electric motor's drive shaft as an absolute value in parallel with a ²ⁿ code, and directly reads the output code. There is an absolute type encoder that determines the zero position by detecting the rotational position and always digitally outputs the rotation angle with the zero position as the coordinate origin.

In this embodiment, the rotary encoder 13 includes first and second pulse signals that optically detect the rotation angle and rotation direction of the drive shaft 12a of the electric motor 12 as two-phase pulse signals with different phases, and convert the detected rotation angle and rotation direction into electrical signals. This is an incremental encoder having detection conversion elements 21a and 21b (FIGS. 1, 2, and 6). Specifically, the rotary encoder 13 includes first and second light emitting elements 18a and 18b that each emit light, and first and second fixed slits 19a through which the light emitted by these light emitting elements 18a and 18b passes, respectively. 19b is a fixed slit plate 19 formed at a first interval P ₁ and first and second light receiving elements that receive light passing through the first and second fixed slits 19a and 19b, respectively, and convert it into an electrical signal. a rotating slit plate 22 that rotates together with the drive shaft 12a (FIGS. 5 and 6) and has a plurality of rotating slits 22a formed therein at a second interval _P2 . (Figure 2). The first and second light emitting elements 18a, 18b and the first and second light receiving elements 21a, 21b are fixed to the case 12b side. Specifically, the first and second light emitting elements 18a, 18b are fixed to the case 12b (FIGS. 5 and 6) of the electric motor 12 via the element housing case 23, the panel 24, and the housing 26. The first and second light receiving elements 21a and 21b are fixed to the case 12b of the electric motor 12 via the element housing case 23, panel 24 and housing 26 so as to face the first and second light emitting elements 18a and 18b, respectively. be done. The first interval P ₁ is the pitch between the first and second fixed slits 19a and 19b, and the second interval P ₂ is the pitch between the adjacent rotating slits 22a and 22a.

The electric motor 12 is a motor with a speed reducer, and the output shaft 12c of the electric motor 12 is inserted into one end of the electromagnetic clutch 27, and the base end of the drive shaft 12a is inserted into the other end of the electromagnetic clutch 27 (FIG. 6). . The electromagnetic clutch 27 allows or prevents rotation of the output shaft 12c and the drive shaft 12a. Further, the entire electromagnetic clutch 27 and the base end portion of the drive shaft 12a are housed in a housing 26 having an opening 26a formed in the side surface (FIGS. 5 and 6). The base end of the housing 26 is attached to the tip of the case 12b of the electric motor 12, and the tip of the housing 26 is attached to the flange 28. The flange 28 is attached to one end of the head rail 16, and the center of the drive shaft 12a is rotatably held by the flange 28. Further, the opening 26a of the housing 26 is closed by a panel 24, and an element housing case 23 having a recess 23a formed in the center is attached to the inner surface of the panel 24. Further, the element housing case 23 is divided into a first housing section 23b and a second housing section 23c by the recess 23a. The first and second light emitting elements 18a and 18b are housed in the first housing part 23b, and the fixed slit plate 19 and the first and second light receiving elements 21a and 21b are housed in the second housing part 23c. At this time, the fixed slit plate 19 is housed in the second housing part 23c so as to be located between the first and second light emitting elements 18a and 18b and the first and second light receiving elements 21a and 21b.

On the other hand, the rotating slit plate 22 is attached to the drive shaft 12a so as to be located between the first and second light emitting elements 18a, 18b and the fixed slit plate 19, and the rotating slit plate 22 is attached to the drive shaft 12a so as to be located between the first and second light emitting elements 18a, 18b and the fixed slit plate 19. (FIG. 2). Specifically, the rotating slit plate 22 is formed into a disk shape, and a plurality of rotating slits _22a are formed on the outer periphery of the plate at a second interval P 2 on the same circumference (FIGS. 5 and 6). ). Further, the rotary slit plate 22 is fitted near the base end of the drive shaft 12a, and the outer peripheral edge of the rotary slit plate 22, on which a plurality of rotary slits 22a are formed, is loosely inserted into the recess 23a of the device housing case 23. As a result, the outer peripheral edge of the rotating slit plate 22 in which the plurality of rotating slits 22a are formed is located between the first and second light emitting elements 18a, 18b and the fixed slit plate 19, and the rotating slit plate 22 is positioned between the drive shaft 12a. By rotating together, the light emitted by the first and second light emitting elements 18a and 18b is transmitted or blocked.

The relationship between the first interval P ₁ between the first and second fixed slits 19a, 19b and the second interval P ₂ between the adjacent rotating slits 22a, 22a, that is, P ₁ :P ₂ is, for example, 3:4. (Figure 2). Further, the relationship between the width B 1 of the first and second fixed slits 19a and _19b and the width B ₂ of the rotating slit 22a, that is, B ₁ :B ₂ can be set to, for example, 1:3. Furthermore, P ₁ :B ₁ can be set, for example, to 6:1, and P ₂ :B ₂ can be set, for example, to 8:3. Note that the interval between the first and second light emitting elements 18a, 18b and the interval between the first and second light receiving elements 21a, 21b are the same as the first interval _P1 between the first and second fixed slits 19a, 19b. Set.

The first light emitting element 18a is provided facing the first fixed slit 19a and the first light receiving element 21a (FIG. 2). Then, as the rotating slit plate 22 rotates, the light emitted by the first light emitting element 18a passes through the rotating slit 22a and the first fixed slit 19a, reaches the first light receiving element 21a, and is transmitted to the first light receiving element 21a. There are cases where the light is detected, and cases where the light is not detected by the first light receiving element 21a because it is blocked by the rotating slit plate 22 and does not reach the first light receiving element 21a. As a result, detection and non-detection of light by the first light receiving element 21a are alternately repeated.

Further, the second light emitting element 18b is provided facing the second fixed slit 19b and the second light receiving element 21b (FIG. 2). As the rotating slit plate 22 rotates, the light emitted by the second light emitting element 18b passes through the rotating slit 22a and the second fixed slit 19b and reaches the second light receiving element 21b. In some cases, the light is detected, and in other cases, the light is blocked by the rotating slit plate 22 and does not reach the second light receiving element 21b, so that the light is not detected by the second light receiving element 21b. As a result, detection and non-detection of light by the second light receiving element 21b are alternately repeated. In this specification, a state in which light is detected by the first light receiving element 21a is defined as a state in which the A phase of the encoder is detected, and a state in which light is not detected by the first light receiving element 21b is defined as a state in which the A phase of the encoder is not yet detected. Assume that it is in a detection state (FIGS. 1, 3, and 9). Furthermore, the state in which light is detected by the second light receiving element 21b is defined as the B-phase detection state of the encoder, and the state in which light is not detected by the second light-receiving element 21b is defined as the B-phase non-detection state of the encoder. Suppose there is. Note that the first and second light emitting elements 18a and 18b are of the same shape and size and are formed in the same structure, the first and second fixed slits 19a and 19b are formed to be the same shape and size, and the first and second light emitting elements The light receiving elements 21a and 21b have the same shape and size, and are formed to have the same structure.

On the other hand, as shown in FIG. 4, a curtain moving mechanism 29 is provided between the first runner 17a of the plurality of runners 17 and the electric motor 12. The curtain moving mechanism 29 includes a drive pulley 29a fitted to the drive shaft 12a of the electric motor 12 and provided at one end of the head rail 16, and a driven pulley 29b rotatably provided at the other end of the head rail 16. and a belt 29c stretched around a driving pulley 29a and a driven pulley 29b. The belt 29c is routed within the head rail 16, and the leading runner 17a is coupled to the belt 29c. Then, the driving force of the electric motor 12 is transmitted to the leading runner 17a via the driving pulley 29a and belt 29c of the curtain moving mechanism 29, and the leading runner 17a moves along the head rail 16, and the trailing runner 17b The curtain 11 is configured to be opened and closed by the following.

As shown in FIGS. 2 and 6, the detection outputs of the first and second light receiving elements 21a and 21b and the detection output of the remote control switch 31 are inputted to the control input of the controller 14, and the detection output of the remote control switch 31 is inputted to the control input of the controller 14. is connected to the electromagnetic clutch 27 via an electromagnetic clutch drive circuit 32 and to the electric motor 12 via a motor drive circuit 33. Further, the controller 14 is provided with a memory 14a. This memory 14a stores the position of the leading runner 17a on the head rail 16 based on the rotation speed and rotation angle of the drive shaft 12a detected by the first and second light receiving elements 21a and 21b, and the position of the curtain 11 set in advance, which will be described later. The control contents of the electric motor 12 based on the signal waveform pattern of the rotary encoder 13 at the closing limit position, the intermediate position, and the stop position of the electric motor 12, and the detection output of the remote control switch 31 are stored.

The electric motor 12 is configured to be driven by a manual movement of the curtain 11 by a predetermined amount or more, that is, a movement of the leading runner 17a by a predetermined amount or more by manually pulling the curtain 11 as a trigger. touch motion function). Specifically, when the leading runner 17a moves by a predetermined amount or more (for example, 5 cm or more) by pulling the curtain 11 by hand, the curtain 11 and the leading runner 17a are moved by the first and second light receiving elements 21a and 21b of the rotary encoder 13. The movement and direction of the movement are detected, and the controller 14 operates the electric motor 12 based on the detected output. Here, in order to detect the moving direction when the curtain 11 is manually moved, the signal waveform pattern of the rotary encoder 13 at the stop position of the electric motor 12 is stored in the memory 14a. That is, when the first and second light receiving elements 21a and 21b detect a signal indicating that the operation of the electric motor 12 has stopped, the signal waveform patterns on both sides of the rotary encoder 13 at the stop position of the electric motor 12 are stored in the memory 14a. be done. For example, as shown in Fig. 1, when the stop position of the electric motor 12 is set to ``00'' in binary representation (encoder A phase and B phase), the curtain is manually opened from this position in the opening direction (right direction). If you move the curtain, the signal waveform pattern will be in the open direction changing from "01" → "11" → "10" → "00" → "01", and if you manually move the curtain in the closing direction (to the left) The signal waveform pattern in the closing direction changes from "10" to "11" to "01", and the left and right signal waveform patterns are different. These signal waveform patterns are stored in the memory 14a.

Then, when the first and second light receiving elements 21a and 21b detect the operation stop signal of the electric motor 12, the controller 14 stores the signal waveform pattern of the rotary encoder 13 at this stop position in the memory 14a, as described above. It is configured to store the information and stop supplying power to the second light receiving element 21b (FIGS. 1, 2, and 6). However, in this embodiment, when the electric motor 12 is stopped, the controller 14 detects the position closest to the stop position of the electric motor 12 based on the detection outputs of the first and second light receiving elements 21a and 21b. The electric motor 12 rotates the rotating slit plate 22 forward or reverse to a position where the first and second light receiving elements 21a and 21b do not receive the light emitted by the hemorrhoid 1 and the second light emitting elements 18a and 18b. configured to control. Therefore, when the first and second light receiving elements 21a and 21b detect the operation stop signal of the electric motor 12, the light emitted by the first and second light emitting elements 18a and 18b is transmitted to the first and second light receiving elements. This refers to when the rotating slit plate 22 is rotated forward or reverse until it reaches a position where the elements 21a and 21b are not supported and then stopped.

On the other hand, the signal for starting the operation of the stopped electric motor 12 is a trigger signal that is detected by the first light receiving element 21a and input to the controller 14 when the curtain is manually moved by more than a predetermined amount as a trigger, or This is a switch signal input to the controller 14 based on a switch operation. When the operation start signal of the electric motor 12 is the trigger signal, the controller 14 starts supplying power to the second light receiving element 21b when the first light receiving element 21a detects manual movement of the curtain 11. When the first and second light receiving elements 21a and 21b detect the trigger signal, the rotation direction of the electric motor 12 is determined based on the detection outputs of the first and second light receiving elements 21a and 21b and the signal waveform pattern. configured to determine. Here, the time when the first light receiving element 21a detects manual movement of the curtain 11 refers to the time when the signal waveform detected by the first light receiving element 21a changes. Specifically, as shown in Fig. 1, when the stop position of the electric motor 12 is set to ``00'' in binary representation (A phase and B phase of the encoder), manual operation is performed from this position in the opening direction (to the right). When the curtain is moved in , it is the "signal waveform change detection" position on the right side, and when the curtain is manually moved in the closing direction (to the left), it is the "signal waveform change detection" position on the left side.

On the other hand, the remote control switch 31 is a switch operated to open and close the curtain 11. That is, by operating this remote control switch 31, the electric motor 12 is driven and the curtain 11 is opened and closed (FIGS. 6 and 15). When the operation start signal of the electric motor 12 is the switch signal, the controller 14 detects the rotary encoder at this stop position when the first and second light receiving elements 21a and 21b detect the operation stop signal of the electric motor 12. 13 signal waveform patterns are stored in the memory 14a, and the power supply to the second light receiving element 21b is stopped. Further, when an operation start signal for the electric motor 12 is input based on the switch operation, the controller 14 determines the rotational direction of the electric motor 12 based on the switch operation, and transmits signals to the second light receiving elements 21a and 21b. configured to begin supplying power;

The operation of the electric switchgear configured as described above will be explained.

(1) When storing the closing limit position of the curtain 11 in advance This will be explained based on the flowchart of FIG. 7. First, while the curtain 11 is stopped, the electric opening/closing device is powered on and detection of the closing limit position is started. Next, by pressing a close button (not shown) on the remote control switch 31, the electromagnetic clutch 27 and the electric motor 12 are driven to close the curtain 11. That is, the controller 14 controls the electromagnetic clutch drive circuit 32 and the motor drive circuit 33 to allow the electromagnetic clutch 27 to rotate the drive shaft 12a and rotate the electric motor 12, thereby causing the drive shaft 12a, drive pulley 29a, and The leading runner 17a is moved via the belt 29c. As a result, the curtain 11 is moved and closed. While the curtain 11 is moving, the encoder signal, that is, the signal detected by the first and second light receiving elements 21a and 21b of the rotary encoder 13 is changing. When the encoder signal stops changing, the controller 14 determines that the curtain 11 of the electric opening/closing device has physically reached the closing limit position and has stopped, and stops the electric motor 12 and stops the rotation of the drive shaft 12e by the electromagnetic clutch 27. to prevent

At this time, the controller 14 determines whether or not both the A phase and B phase of the encoder are in an undetected state based on the detection outputs of the first and second light receiving elements 21a and 21b. For example, as shown in FIG. 3(b), at the position where the curtain 11 is stopped (the physical closing limit position of the electric opening/closing device), the A phase of the encoder is in the detection state, and the B phase of the encoder is in the non-detection state. If so, the controller 14 controls the electromagnetic clutch 27 and the electric motor 12 to transmit the light emitted by the first and second light emitting elements 18a and 18b to the first and second light emitting elements 18a and 18b at the position closest to the stopped position. The rotating slit plate 22 is reversed to a position where the two light receiving elements 21a and 21b do not receive light, that is, a position where both the A phase and B phase of the encoder are not detected as shown in FIG. 3(b). Then, the electric motor 12 is stopped at this position, and the rotation of the drive shaft 12a is prevented by the electromagnetic clutch 27, and this position is stored in the memory 14a as the actual stop position (closing limit position) of the curtain 11. On the other hand, if both the A phase and B phase of the encoder are not detected at the position where the curtain 11 has stopped (the physical closing limit position of the electric opening/closing device), that position is It is stored in the memory 14a as a limit position). Note that the opening limit position of the curtain 11 is also stored in the memory 14a in the same manner as described above.

(2) When storing each intermediate position of the curtain 11 in advance This will be explained based on the flowchart of FIG. 10. In this embodiment, the intermediate positions of the curtain 11 are set from 1st to kth. First, while the curtain 11 is stopped, the electric opening/closing device is powered on and detection of the first intermediate position is started. Next, by pressing the close button of the remote control switch 31, the electromagnetic clutch 27 and the electric motor 12 are driven to move the curtain 11 in the direction of closing it. While the curtain 11 is moving, the encoder signal, that is, the signal detected by the first and second light receiving elements 21a and 21b of the rotary encoder 13 is changing. When the curtain 11 reaches the first intermediate position and a stop button (not shown) of the remote control switch 31 is pressed, the controller 14 stops the electric motor 12 and prevents the rotation of the drive shaft 12a by the electromagnetic clutch 27. Then, the encoder signal stops changing.

At this time, the controller 14 determines whether or not both the A phase and B phase of the encoder are in an undetected state based on the detection outputs of the first and second light receiving elements 21a and 21b. For example, as shown in FIG. 9(b), when the A phase of the encoder is in an undetected state and the B phase of the encoder is in a detected state at the position where the curtain 11 stops (timing at which the stop signal is received). , the controller 14 controls the electromagnetic clutch 27 and the electric motor 12 to direct the light emitted by the first and second light emitting elements 18a and 18b to the first and second light receiving elements at the position closest to the stopped position. The rotary slit plate 22 is rotated forward to a position where the encoder 21a and 21b are not detected, that is, as shown in FIG. 9(b), the A phase and B phase of the encoder are both in an undetected state. Then, the electric motor 12 is stopped at this position, and the rotation of the drive shaft 12a is prevented by the electromagnetic clutch 27, and this position is stored in the memory 14a as the actual stopping position (first intermediate position) of the curtain 11. It is stored in the memory 14a in association with the first button (not shown) of the remote control switch 31.

On the other hand, if the A phase and B phase of the encoder are both undetected at the position where the curtain 11 has stopped (the timing at which the stop signal is received), that position is set to the actual stopped position of the curtain 11 (the first intermediate position). position), and is also stored in the memory 14a in correspondence with the first button of the remote control switch 31. The second to kth intermediate positions are also set in the same manner as described above and stored in the memory 14a, and are also stored in the memory in correspondence with the second to kth buttons (not shown) of the remote control switch 31. As a result, when the nth button (any one of the first to kth buttons) of the remote control switch 31 is pressed, the controller 14 stops the curtain 11 at the nth intermediate position, and the encoder A phase and Since the B phase is both in an undetected state, the first and second light receiving elements 21a and 21b do not operate, and the power consumption of the rotary encoder 13 can be reduced.

(3) When the touch motion function is activated for the curtain 11 in the intermediate position, and then the curtain 11 is moved in the direction of closing, and the curtain 11 is stopped at the fully closed position or the intermediate position. This will be explained based on the flowchart of No. 12. Power has already been turned on to the electric opening/closing device, and the curtain 11 is stopped at an intermediate position. First, the controller 14 stores the signal waveform pattern of the rotary encoder 13 at the stop position of the curtain 11 in the memory 14a, and stops supplying power to the second light emitting element 18b and the second light receiving element 21b. As shown in FIG. 1, the above signal waveform pattern is based on the signal waveform pattern when the stop position of the electric motor 12 is "00" in binary representation (encoder A phase and B phase). ), the signal waveform pattern in the opening direction changes from "01" to "11" to "10" to "00" to "01" and the signal waveform pattern changes manually in the closing direction (to the left). This is a signal waveform pattern in the closing direction that changes from "10" to "11" to "01" when the curtain is moved. In this state, when the curtain 11 is manually operated in the direction of closing and the first light receiving element 21a detects manual movement of the curtain 11, the electric motor 12 is stopped as shown in FIG. When the position is set to ``00'' in binary representation (encoder phase A and B phase), manually move the curtain 11 in the closing direction (to the left) from this position to the left ``signal waveform change detection'' position. When it reaches , the controller 14 starts supplying power to the second light emitting element 18b and the second light receiving element 21b.

When the curtain 11 is manually moved by a predetermined amount or more, the first and second light receiving elements 21a and 21b output a trigger signal (a signal input to the controller 14 when the curtain 11 is manually moved by a predetermined amount or more as a trigger). The controller 14 determines the rotation direction of the electric motor 12 based on the detection outputs of the first and second light receiving elements 21a and 21b and the signal waveform pattern. Specifically, as shown in FIG. 1, the signal waveform pattern detected by the first and second light receiving elements 21a and 21b changes from "10" to "11" in binary representation (A phase and B phase of the encoder). Since it changes to "01", it is determined that the signal waveform pattern is in the closing direction. The controller 14 controls the electromagnetic clutch drive circuit 32 and the motor drive circuit 33 to allow the electromagnetic clutch 27 to rotate the drive shaft 12a and rotate the electric motor 12 in the curtain closing direction. 12a, the leading runner 17a is moved in the curtain closing direction via the drive pulley 29a and belt 29c. As a result, even if you release your hand from the curtain 11, the curtain 11 will continue to move until the stop button on the remote control switch 31 is pressed or the stop button on the remote control switch 31 is not pressed and the curtain 11 reaches its closing limit position. The signal, that is, the signal detected by the first and second light receiving elements 21a and 21b of the rotary encoder 13 continues to change. When the stop button of the remote control switch 31 is pressed, the controller 14 determines that the curtain 11 has reached the position desired by the operator of the remote control switch 31 and has stopped, and stops the electric motor 12 and activates the electromagnetic clutch 27. Rotation of the drive shaft 12a is prevented, and the encoder signal does not change.

At this time, the controller 14 determines whether or not both the A phase and B phase of the encoder are in an undetected state based on the detection outputs of the first and second light receiving elements 21a and 21b. For example, if the A phase of the encoder is in an undetected state and the B phase of the encoder is in a detected state at the position where the curtain 11 stops (timing at which the stop signal is received), the controller 14 controls the electromagnetic clutch 27 and the electric The encoder controls the motor 12 to a position that is closest to the stopped position and where the first and second light receiving elements 21a and 21b do not receive the light emitted by the first and second light emitting elements 18a and 18b. The rotating slit plate 22 is rotated in the normal direction to a position where both the A phase and the B phase are in an undetected state, and then stopped. Furthermore, the controller 14 stores the signal waveform pattern of the rotary encoder 13 at this stop position in the memory 14a, and stops supplying power to the second light emitting element 18b and the second light receiving element 21b. As a result, power is not supplied to the second light emitting element 18b and the second light receiving element 21b, and the first light receiving element 21a is blocked from light from the first light emitting element 18a by the rotating slit plate 22 and does not operate. Power consumption of the encoder 13 can be reduced.

On the other hand, if the stop button of the remote control switch 31 is not pressed and the curtain 11 reaches the closing limit position and the encoder signal stops changing, the controller 14 determines that the curtain 11 has physically reached the closing limit position and has stopped. Then, the electric motor 12 is stopped and the electromagnetic clutch 27 prevents rotation of the drive shaft 12a. This stop position is already stored in the memory 14a as the actual stop position (closing limit position) of the curtain 11, and since both the A phase and B phase of the encoder are in an undetected state, the first and second light receiving elements 21a and 21b cease to operate. Further, the controller 14 stores the signal waveform pattern of the rotary encoder 13 at the stop position in the memory 14a, and stops supplying power to the second light emitting element 18b and the second light receiving element 21b. As a result, similarly to the above, power is not supplied to the second light emitting element 18b and the second light receiving element 21b, and the first light receiving element 21a is blocked from light from the first light emitting element 18a by the rotating slit plate 22. Since it does not operate, the power consumption of the rotary encoder 13 can be reduced.

Note that when the curtain 11 is manually moved less than a predetermined amount and then stopped, the controller 14 stores the signal waveform pattern of the rotary encoder 13 at this stop position in the memory 14a, and also stores the signal waveform pattern of the rotary encoder 13 at this stop position, and also stores the signal waveform pattern of the rotary encoder 13 at this stop position. The supply of power to the second light receiving element 21b is stopped. Furthermore, if the timing of supplying power to the second light emitting element 18b and the second light receiving element 21b is slower than the speed at which the curtain 11 is manually moved, and the signal waveform pattern of the rotary encoder 13 cannot be detected, the second The rotation direction of the electric motor 12 is determined based on the signal pattern detected after power is supplied to the light emitting element 18b and the second light receiving element 21b, and the edge of the signal pulse detected by the first light receiving element 21a to which power continues to be supplied is determined. (the number of "signal waveform change detection" positions in the binary representation (A phase only) in FIG. 1(b)), and this measured value is used as a signal pattern detected by the first and second light receiving elements 21a and 21b. By combining this with , it is possible to calculate the manual movement distance of the curtain 11 from the stop position. In this case, although the direction in which the curtain 11 is manually moved can be determined, there is a risk that an error will occur between the detected position of the leading runner 17a by the rotary encoder 13 and the actual position of the leading runner 17a. By performing origin correction at the fully closed position and fully open position of the curtain 11, the above error can be corrected.

(4) When the curtain 11 in the intermediate position is moved in the closing direction based on the operation of the remote control switch 31, and the curtain 11 is stopped at the fully closed position or the intermediate position. FIGS. 13 and 14 This will be explained based on the flowchart diagram. Power has already been turned on to the electric opening/closing device, and the curtain 11 is stopped at an intermediate position. First, the controller 14 stores the signal waveform pattern of the rotary encoder 13 at the stop position of the curtain 11 in the memory 14a, and stops supplying power to the second light emitting element 18b and the second light receiving element 21b. Next, when the close button of the remote control switch 31 is pressed, the controller 14 controls the electromagnetic clutch drive circuit 32 and the motor drive circuit 33 to allow the electromagnetic clutch 27 to rotate the drive shaft 12a and to switch the electric motor 12 off. By rotating it in the closing direction, the leading runner 17a is moved via the drive shaft 12a, drive pulley 29a, and belt 29c. This moves the curtain 11 in the closing direction. The curtain 11 is moving until the stop button of the remote control switch 31 is pressed or the stop button of the remote control switch 31 is not pressed and the curtain 11 reaches the closing limit position, and the encoder signal, that is, the first And the signals detected by the second light receiving elements 21a and 21b continue to change. When the stop button of the remote control switch 31 is pressed, the controller 14 determines that the curtain 11 has reached the position desired by the operator of the remote control switch 31 and has stopped, and stops the electric motor 12 and activates the electromagnetic clutch 27. Rotation of the drive shaft 12a is prevented, and the encoder signal does not change.

At this time, the controller 14 determines whether or not both the A phase and B phase of the encoder are in an undetected state based on the detection outputs of the first and second light receiving elements 21a and 21b. For example, if the A phase of the encoder is in an undetected state and the B phase of the encoder is in a detected state at the position where the curtain 11 stops (timing at which the stop signal is received), the controller 14 controls the electromagnetic clutch 27 and the electric The encoder controls the motor 12 to a position that is closest to the stopped position and where the first and second light receiving elements 21a and 21b do not receive the light emitted by the first and second light emitting elements 18a and 18b. The rotating slit plate 22 is rotated in the normal direction to a position where both the A phase and the B phase are in an undetected state, and then stopped. Furthermore, the controller 14 stores the signal waveform pattern of the rotary encoder 13 at this stop position in the memory 14a, and stops supplying power to the second light emitting element 18b and the second light receiving element 21b. As a result, power is not supplied to the second light emitting element 18b and the second light receiving element 21b, and the first light receiving element 18a is blocked from light from the first light emitting element 18a by the rotating slit plate 22 and does not operate. Power consumption of the encoder 13 can be reduced.

On the other hand, if the curtain 11 reaches the closing limit position without the stop button of the remote control switch 31 being pressed, and the encoder signal stops changing, the controller 14 determines that the curtain 11 has physically reached the closing limit position and has stopped. Then, the electric motor 12 is stopped and the electromagnetic clutch 27 prevents rotation of the drive shaft 12a. This stop position is already stored in the memory 14a as the actual stop position (closing limit position) of the curtain 11, and since both the A phase and B phase of the encoder are in an undetected state, the first and second light receiving elements 21a and 21b cease to operate. Further, the controller 14 stores the signal waveform pattern of the rotary encoder 13 at the stop position in the memory 14a, and stops supplying power to the second light emitting element 18b and the second light receiving element 21b. As a result, similarly to the above, power is not supplied to the second light emitting element 18b and the second light receiving element 21b, and the first light receiving element 21a is blocked from light from the first light emitting element 18a by the rotating slit plate 22. Since it does not operate, the power consumption of the rotary encoder 13 can be reduced.

Note that in the above embodiment, the first and second light receiving elements optically detect the rotation angle and rotation direction of the drive shaft of the electric motor as two-phase pulse signals with different phases, and convert them into electric signals. Although the rotary encoder has the first and second detection conversion elements, the first encoder magnetically detects the rotation angle and rotation direction of the drive shaft of the electric motor as two-phase pulse signals with different phases and converts them into electric signals. and a second magnetic sensor. In this case, the rotary encoder includes a rotating disc that is fixed to the drive shaft of the electric motor so as to be rotatable together with the drive shaft and has a magnetic pattern formed thereon, and a rotating disc that is fixed to the case side of the electric motor and is configured to rotate together with the drive shaft. It has first and second detection and conversion elements that are composed of magnetic sensors that detect patterns and convert them into electrical signals.

Further, in the above embodiment, an incremental encoder using two detection conversion elements consisting of the first and second light receiving elements has been described, but three or more detection conversion elements consisting of three or more light receiving elements or , an absolute type encoder using three or more detection conversion elements each consisting of three or more magnetic sensors may be used. In this case, by using three or more detection and conversion elements, the rotation angle of the electric motor's drive shaft is output in parallel as an absolute value with a ²ⁿ code, so the zero position of the drive shaft is determined and always The rotation angle with the zero position as the coordinate origin is output digitally. For example, the light emitted from three light emitting elements causes relative rotational movement between three rotating slit plates and three fixed slit plates that have optical slits with a binary code pattern corresponding to the rotational position of the drive shaft. The presence or absence of the light is detected by the three light receiving elements and output as a binary absolute position detection signal. As a result, with the absolute encoder, there is no risk of an error occurring between the position detected by the encoder of the first runner and the actual position of the first runner, so the curtain is periodically checked at the fully closed and fully open positions. There is no need to perform origin correction.

Further, in the above embodiment, a curtain movable along the head rail is used as the opening/closing body, but a plurality of louvers movable along the head rail may be used as the opening/closing body. Further, in the above embodiment, the rotating slit plate is positioned between the light emitting element and the fixed slit plate, but the rotating slit plate may be positioned between the fixed slit plate and the light receiving element. Furthermore, in the above embodiment, the first and second light emitting elements are provided facing the first and second light receiving elements, respectively, but a single light emitting element may be used. In this case, the configuration is such that light emitted by a single light emitting element passes through the first and second fixed slits and is received by the first and second light receiving elements. Therefore, when the first and second light receiving elements detect the electric motor operation stop signal, the controller stops supplying power to the second light receiving element, but does not supply power to the single light emitting element. does not stop.

11 Curtain (opening/closing body)
12 Electric motor 12a Drive shaft 12b Case 13 Rotary encoder 14 Controller 14a Memory 16 Head rail 17 Runner 17a Leading runner 17b Following runner 18a, 18b First and second light emitting elements 19 Fixed slit plate 19a, 19b First and second Fixed slit 21a First light receiving element (first detection conversion element)
21b Second light receiving element (second detection conversion element)
22 Rotating slit plate 22a Rotating slit 29 Curtain moving mechanism (opening/closing body moving mechanism)
P ₁ First interval P ₂ Second interval

Claims (8)

an electric motor that drives the opening/closing body; a rotary encoder that detects the rotation angle and rotation direction of the drive shaft of the electric motor as pulse signals of two or more phases with different phases; In an electric switchgear equipped with a controller to control,
The rotary encoder has two or more detection conversion elements that optically or magnetically detect the rotation angle and rotation direction of the drive shaft of the electric motor as two or more phase pulse signals with different phases and convert the detected signals into electrical signals. death,
The operation start signal of the electric motor is a trigger signal that is detected by the two or more detection conversion elements and input to the controller when the opening/closing body is manually moved by a predetermined amount or more as a trigger;
The controller stores the signal waveform pattern of the rotary encoder at the stop position of the electric motor in a memory when the two or more detection conversion elements detect the operation stop signal of the electric motor , and also stores the signal waveform pattern of the rotary encoder at the stop position of the electric motor, and When the power supply to the other detection conversion elements is stopped while the power supply to one of the detection conversion elements among the conversion elements is stopped, and the first detection conversion element detects manual movement of the opening/closing body. , starts supplying power to the other detection conversion elements, and when the two or more detection conversion elements detect the trigger signal, the detection outputs of the two or more detection conversion elements and the signal waveform pattern An electric opening/closing device characterized in that the electric opening/closing device is configured to determine a rotation direction of the electric motor based on the rotation direction of the electric motor. The rotary encoder is
a light emitting element fixed to the case side of the electric motor and emitting light;
a fixed slit plate fixed to the case side of the electric motor so as to face the light emitting element, and having first and second fixed slits spaced apart from each other by a first interval, through which light emitted from the light emitting element passes;
first and second detection conversion elements that are fixed to the case side of the electric motor and are comprised of light receiving elements that receive light that has passed through the first and second fixed slits and convert it into an electrical signal;
The first interval is located between the light emitting element and the fixed slit plate or between the fixed slit plate and the detection conversion element, and is attached to the drive shaft so as to rotate together with the drive shaft, and is located on the same circumference. 2. The electric opening/closing device according to claim 1, further comprising a rotary slit plate in which a plurality of rotary slits are formed at different second intervals to pass or block light emitted from the light emitting element. The rotary encoder is
a rotating disk fixed to the drive shaft of the electric motor so as to be rotatable together with the drive shaft, and on which a magnetic pattern is formed;
2. The electric switchgear according to claim 1, further comprising first and second detection and conversion elements each comprising a magnetic sensor fixed to a case side of the electric motor and detecting a magnetic pattern of the rotating disk and converting the detected magnetic pattern into an electric signal. The controller is configured to transmit light emitted by the light emitting element to the first light emitting element at a position closest to the stop position of the electric motor when the first and second detection conversion elements detect the stoppage of the electric motor. The electric opening/closing device according to claim 2, wherein the electric motor is controlled so as to rotate the rotating slit plate forward or reverse to a position where it is not received by the second detection conversion element and then stop the rotating slit plate. The light emitting element includes first and second light emitting elements provided opposite to the first and second detection conversion elements, respectively, and the controller is configured to: when the supply of power to the second detection conversion element is stopped; The supply of power to the second light emitting element facing the second detection conversion element is also stopped, and when the supply of power to the second detection conversion element is started, the second light emitting element facing the second detection conversion element is stopped. The electric switchgear according to claim 2 or 4, wherein the electric switchgear is configured to also start supplying power to the light emitting element. The operation start signal of the electric motor is a switch signal input to the controller based on a switch operation,
The controller stores the signal waveform pattern of the rotary encoder at the stop position of the electric motor in a memory when the first and second detection conversion elements detect the operation stop signal of the electric motor, and also stores the signal waveform pattern of the rotary encoder at the stop position of the electric motor. When the power supply to the detection conversion element is stopped and the switch signal is input, the rotation direction of the electric motor is determined based on the switch operation, and the power supply to the second detection conversion element is stopped. The electric switching device according to claim 2 or 3 , wherein the electric switching device is configured to start. The electric motor is attached to an end of a head rail attached to a window frame, a wall surface, or a ceiling,
a plurality of runners movable along the headrail are attached to the headrail;
An opening/closing body is suspended from the plurality of runners,
An opening/closing body moving mechanism is provided between the first runner of the plurality of runners and the electric motor,
The driving force of the electric motor is transmitted to the leading runner via the opening/closing body moving mechanism, and the leading runner moves along the head rail, and the following runners follow, thereby moving the opening/closing body. The electric opening/closing device according to any one of claims 1 to 6, configured to do so. The electric opening/closing device according to claim 7, wherein the opening/closing body is a curtain or a plurality of louvers movable along the head rail.

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