JP2021023540A - Electrically-driven switchgear - Google Patents

Abstract

To make a touch motion function be exerted normally to reduce power consumption of an encoder.SOLUTION: An encoder 13 for detecting rotation of a drive shaft 12a of an electrically-driven motor 12 includes two or more detection conversion elements that optically or magnetically detect a rotation angle and rotation direction of the drive shaft as pulse signals having two or more phases differing from each other and perform conversion to electric signals. A controller 14 stores a signal waveform pattern at a stop position of the encoder in a memory 14 and keeps power supply to one detection conversion element of the two or more detection conversion elements and stops power supply to the other detection conversion element when the two or more detection conversion elements detect an operation stop signal of the electrically-driven motor; starts power supply to the other detection conversion element when the one detection conversion element detects manual movement of an opening/closing body; and, when the two or more detection conversion elements detect a trigger signal, determines a rotation direction of the electrically-driven motor on the basis of detection outputs and signal waveform patterns of the two or more detection conversion elements.SELECTED DRAWING: Figure 6

Description

In the present invention, the rotary encoder detects the rotation angle and rotation direction of the drive shaft of the electric motor that drives the switchgear such as a curtain or a louver, and the controller controls the electric motor based on the detection output of the rotary encoder. It relates to a configured electric switchgear.

Conventionally, the 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 the detecting means, and the control device recognizes the position of the shielding material based on the detection signal output from the detecting means. However, an electric solar shading device configured to control the operation of the electric motor based on a command signal is disclosed (for example, Patent Document 1 (claims 1 and 4, paragraphs [0002], [0045]]. , See Figure 1).). In this electric solar shading device, the electric motor is arranged in a head box, and the driving force of the electric motor is used to raise and lower the slats and adjust the angle. Further, the detection means includes a rotary encoder that detects a slit of a slit plate that rotates integrally with the drive shaft and outputs a two-phase square wave having a different phase as a detection signal. The position information calculation means is configured to calculate the count value of the pulse signal counted based on the detection signal and the level value of the detection signal when the electric motor is stopped as the position information of the shielding material. Further, when the electric motor is stopped, the power cutoff device is configured to cut off the power supply to the detection means.

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 slats are not raised or lowered or the angle is adjusted, the detection operation by the rotary encoder can be stopped to reduce the power consumption by the rotary encoder.

Japanese Unexamined Patent Publication No. 2011-196045

However, in the electric solar shading device shown in Patent Document 1, the electric motor rotates to raise or lower or adjust the angle of the slats by operating a switch such as a wireless switch or a wired switch, and then the electric motor stops. Then, when the raising / lowering or angle adjustment of the slats is stopped, the detection operation by the rotary encoder is stopped. Therefore, even if the curtain is manually operated in this state, the controller cannot operate the electric motor. There was a problem that the touch motion function could not be used. Therefore, in an electric solar shading device having a touch motion function, it is necessary to continue the detection operation by the rotary encoder even if the electric motor is stopped and the slat is raised or lowered or the angle adjustment is stopped, which reduces the power consumption of the rotary encoder. There was a problem that I couldn't do. The touch motion function is a function in which a rotary encoder detects the movement and direction of the curtain when the curtain is manually operated, and the controller operates an electric motor based on the detection output.

An object of the present invention is to provide an electric switchgear capable of normally exerting a touch motion function and reducing power consumption of a rotary encoder.

The first aspect of the present invention is that, as shown in FIGS. 1, 2, 6, 11, 12, and 15, the electric motor 12 for driving the opening / closing body 11 and the drive shaft 12a of the electric motor 12 An electric opening / closing device including a rotary encoder 13 that detects a rotation angle and a rotation direction as pulse signals of two or more phases of rectangular waves having different phases, and a controller 14 that controls an electric motor 12 based on the detection output of the rotary encoder 13. In, 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 two or more phases of pulse signals having different phases, and converts them into electric signals. A trigger that has elements 21a and 21b and that the 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 triggered by the manual movement of the opening / closing body 11 by a predetermined amount or more. It is a signal, and when two or more detection conversion elements 21a and 21b detect an 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 and 2 While maintaining the power supply to the detection conversion element 21a of one of the detection conversion elements 21a and 21b, the power supply to the other detection conversion elements 21b is stopped, and the manual movement of the opening / closing body 11 is performed in the above 1 When the detection conversion element 21a of the above is detected, the supply of power to the other detection conversion element 21b is started, and when two or more detection conversion elements 21a and 21b detect the trigger signal, two or more detections are made. It is characterized in that it is configured to determine the rotation direction of the electric motor 12 based on the detection output of the conversion elements 21a and 21b and the signal waveform pattern.

The second aspect of the present invention is an invention based on the first aspect, and as shown in FIGS. 1, 2 and 6, the rotary encoder is fixed to the case 12b side of the electric motor 12 to emit light. 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 the light emitting elements 18a, 18b, and the light emitted by the light emitting elements 18a, 18b passes through. _{Is fixed to the case 12b side of the electric motor 12 and the fixed slit plate 19 formed with a first} interval P1 and receives the light passing through the first and second fixed slits 19a and 19b and converts it into an electric signal. The drive shaft is located between the first and second detection conversion elements 21a and 21b and the light emitting elements 18a and 18b and the fixed slit plate 19 or between the fixed slit plate 19 and the detection conversion elements 21a and 21b. A plurality of rotary slits 22a are formed on the same circumference with a second interval P _{2 different from the first} interval P 1 so as to rotate together with the drive shaft 12a, and the light emitting elements 18a and 18b. It has a rotating slit plate 22 that allows or blocks the emitted light.

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

The fourth aspect of the present invention is an invention based on the second aspect, and as shown in FIGS. 2, 3 and 6, the controller 14 includes the first and second detection conversion elements 21a and 21b. When the operation stop of the electric motor 12 is detected, the position closest to the stop position of the electric motor 12 and the 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 so as to rotate the rotary slit plate 22 in the forward or reverse direction to stop the rotation.

The fifth aspect of the present invention is an invention based on the second or fourth aspect, and as shown in FIGS. 2, 6, 11 and 12, the light emitting element has the first and second detection conversions. It is composed of first and second light emitting elements 18a and 18b provided so as to face the elements 21a and 21b, respectively, and the controller 14 is a second detection conversion element 21b when the power supply to the second detection conversion element 21b is stopped. The supply of electric power to the second light emitting element 18b facing the second detection conversion element 18b is also stopped, and when the supply of electric power to the second detection conversion element 21b is started, the electric power to the second light emitting element 18b facing the second detection conversion element 21b is supplied. It is characterized by being configured to start supplying.

The sixth aspect of the present invention is an invention based on any one of the first to third aspects, and further, as shown in FIGS. 2, 3, 13 and 14, the operation start signal of the electric motor 12 Is a switch signal input to the controller 14 based on the switch operation, and the controller 14 determines the stop position 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 supply of power to the second detection conversion element 21b is stopped, and when the switch signal is input, the rotation direction of the electric motor 12 is based on the switch operation. It is characterized in that it is configured to start supplying power to the second detection conversion element 21b at the same time.

The seventh aspect of the present invention is an invention based on any one of the first to sixth aspects, and as shown in FIGS. 4, 15 and 16, the electric motor 12 is a window frame, a wall surface, or a wall surface. A plurality of runners 17 attached to the end of the head rail 16 mounted on the ceiling and movable along the head rail 16 are attached to the head rail 16, and the opening / closing body 11 is hung on the plurality of runners 17, and a plurality of runners 17 are hung. An opening / closing body moving mechanism 29 is provided between the leading runner 17a of the runner 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 to lead the runner 17. The opening / closing body 11 is configured to move by moving the runner 17a along the head rail 16 and following the runner 17b.

An eighth aspect of the present invention is an invention based on the seventh aspect, further, as shown in FIGS. 15 and 16, a curtain 11 or a plurality of louvers in which the opening / closing body can move along the head rail 16. It is characterized by being.

In the electric switchgear according to the first aspect of the present invention, when two or more detection conversion elements detect an operation stop signal of the electric motor, the controller switches to one of the two or more detection conversion elements. While maintaining the power supply, the power supply to the other detection conversion elements is stopped, and when one detection conversion element detects the manual movement of the switchgear, the power supply to the other detection conversion elements is supplied. Since it starts, the power consumption of the rotary encoder can be reduced. Further, when two or more detection conversion 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 detects the manual movement of the opening / closing body as 1. When the conversion element detects, the power supply to the other detection conversion elements is started, and when two or more detection conversion elements detect the trigger signal, the detection output of the two or more detection conversion elements and the above signal Since the rotation direction of the electric motor is determined based on the waveform pattern, the touch motion function can be exhibited normally.

In the electric switchgear according to the second aspect of the present invention, the controller is a second light receiving element when the first and second detection conversion elements including the first and second light receiving elements detect an operation stop signal of the electric motor. When the first light receiving element detects the manual movement of the switchgear, the power supply to the second light receiving element is started, so that 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 the stop position in the memory, and first moves the opening / closing body manually. When the light receiving element detects, the 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 outputs of the first and second light receiving elements and the above. Since the rotation direction of the electric motor is determined based on the signal waveform pattern, the touch motion function can be exhibited normally.

In the electric opening / closing device according to the third aspect of the present invention, the controller is a second magnetic sensor when the first and second detection conversion elements including the first and second magnetic sensors detect the operation stop signal of the electric motor. When the first magnetic sensor detects the manual movement of the opening / closing body by stopping the supply of power to the second magnetic sensor, the power supply to the second magnetic sensor is started, so that 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 the stop position in the memory, and first manually moves the opening / closing body. When the magnetic sensor detects, the power supply to the second magnetic sensor is started, and when the first and second magnetic sensors detect the trigger signal, the detection output of the first and second magnetic sensors and the above. Since the rotation direction of the electric motor is determined based on the signal waveform pattern, the touch motion function can be exhibited normally.

In the electric opening / closing device 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 operation stop signal of the electric motor. Since the electric motor is controlled so as to rotate the rotary slit plate forward or reverse to a position closest to the position where the light emitted by the light emitting element is not received by the first and second light receiving elements, the first is controlled. Neither the second light receiving element nor the second light receiving element receives the light emitted by the light emitting element. Further, when the first and second light receiving elements detect that the operation of the electric motor has stopped, the controller stops the supply of electric 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 does not operate because the light from the light emitting element is blocked by the rotating slit plate, 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 so as to face the first and second detection conversion elements including the first and second light receiving elements, respectively. When the supply of power to the second light receiving element is stopped, the controller also stops supplying power to the second light emitting element facing the second light receiving element, so that the power consumption of the rotary encoder can be further reduced.

In the electric switchgear according to the sixth aspect of the present invention, in the controller, the first and second detection conversion elements including the first and second light receiving elements or the first and second magnetic sensors detect the operation stop signal of the electric motor. When the power supply to the second detection conversion element is stopped, the rotation direction of the electric motor is determined based on the switch operation when the switch signal is input, and the power to the second detection conversion element is determined. The power consumption of the rotary encoder can be reduced because the supply of the rotary encoder is started. Further, when the first and second detection conversion elements detect the operation stop signal of the electric motor, the controller stores the signal waveform pattern of the rotary encoder at the stop position in the memory. Therefore, as described above, the touch motion The function can be exhibited 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 or the like, and a plurality of runners are attached to the head rail so as to be movable along the head rail. Since the opening / closing body is hung on the runner and the opening / closing body moving mechanism is provided between the leading runner and the electric motor among the plurality of runners, the driving force of the electric motor is transferred to the leading runner via the opening / closing body moving mechanism. The opening / closing body is opened / closed by being transmitted, the leading runner moves along the head rail, and the succeeding runner follows. Then, as described above, the controller receives a second when the first and second detection conversion elements including the first and second light receiving elements or the first and second magnetic sensors detect the operation stop signal of the electric motor. Since the supply of power to the detection conversion element is stopped, the power consumption of the rotary encoder can be reduced. Further, as described above, when the first and second detection conversion 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 of the open / close body. When the first detection conversion element detects the manual movement, the power supply to the second detection conversion element is started, and when the first and second detection conversion elements detect the trigger signal, the first and second detection conversion elements are started. Since the rotation 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 exhibited.

In the electric switchgear according to the eighth aspect of the present invention, since the switchgear is a curtain or a plurality of louvers that can move along the head rail, the controller is electrically driven by a manual movement of a predetermined amount or more or by a switch operation. By operating the motor, the curtain or louver can be moved to a fully closed or fully open position, or to a desired position based on the stop operation of the switch to stop. Then, after the opening / closing body is stopped, the controller stops the supply of electric power to the second detection conversion element including the second light receiving element or the second magnetic sensor. As a result, the touch motion function can be normally exhibited and the power consumption of the rotary encoder can be reduced.

(A) is a front view of an electric switchgear showing a state in which the leading runner of the embodiment of the present invention is stopped at an intermediate position, and (b) is a second light emitting element and a second light emitting element while the electric motor of the embodiment of the present invention is stopped. 2 It is a figure which shows the pulse waveform of the rotary encoder and the signal waveform pattern of the stop position in the state which stopped supplying electric power to 2 light receiving elements. (A) is a cross-sectional configuration diagram of a main part showing a state in which the rotary slit plate of the rotary encoder is stopped at the physical limit position when the curtain is stopped at the opening / closing limit position stored in advance, and (b). ) Is a cross-sectional configuration diagram of a main part showing a state in which the rotary slit plate is stopped at an actual stop position. (A) is a front view of the electric switchgear showing a state in which the leading runner is stopped at the opening / closing limit position of the curtain stored in advance, and (b) is an actual view of the rotary slit plate from the physical limit position of the curtain. It is a figure which shows the pulse waveform of the rotary encoder which shows that it returns to a stop position of, and stops. It is sectional drawing which shows the state which cut the head rail of the electric switchgear vertically in the longitudinal direction. It is a perspective view of the electric motor, the electromagnetic clutch and the rotary encoder with the encoder cover of the electric switchgear removed. It is a block diagram which combined the disassembled perspective view of the electric motor, the electromagnetic clutch and the rotary encoder with the encoder cover of the electric switchgear removed, and the block diagram including the controller which controls them. It is a flowchart for storing the closing limit position of a curtain in advance. When the curtain of the electric switchgear is stopped based on a stop signal from the outside, (a) is a cross-sectional configuration of a main part corresponding to FIG. 2 (a) showing the timing when the rotary slit plate receives the stop signal. FIG. 6B is a cross-sectional configuration diagram of a main part corresponding to FIG. 2B in which the rotary slit plate shows an actual stop position. (A) is a front view of the electric switchgear showing a state in which the leading runner is stopped based on a stop signal from the outside, and (b) is from the timing when the rotary slit plate receives the stop signal to the actual stop position. It is a figure which shows the pulse waveform of the rotary encoder which shows that it advances and stops. It is a flowchart which shows the operation when each intermediate position of a curtain is stored in the memory in advance. It is a flowchart which shows the operation of the first half which moves in the direction which closes a curtain after exerting a touch motion function with respect to the curtain in an intermediate position, and stops a curtain in a fully closed position or an intermediate position. It is a flowchart which shows the latter half operation which moves the curtain in the closing direction after exerting the touch motion function with respect to the curtain in the intermediate position, and stops the curtain in a fully closed position or an intermediate position. It is a flowchart which shows the operation of the first half which moves a curtain in an intermediate position in the direction which closes a curtain based on the operation of a remote control switch, and stops a curtain in a fully closed position or an intermediate position. It is a flowchart which shows the latter half operation which moves a curtain in an intermediate position in the direction which closes a curtain based on the operation of a remote control switch, and stops a curtain in a fully closed position or an intermediate position. It is a front view which shows the state which opened the curtain of the electric switchgear, and closed the window fully. It is a front view which shows the state which the curtain of the electric switchgear is folded and the window is fully opened.

Next, a mode for carrying out the present invention will be described with reference to the drawings. As shown in FIGS. 1, 6 and 15, the electric opening / closing device has a phase difference between the electric motor 12 for opening / closing the curtain 11 which is an opening / closing body and the drive shaft 12a of the electric motor 12 in different phases. It includes a rotary encoder 13 that detects as a pulse signal of a two-phase rectangular wave, and a controller 14 that controls an 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, a wall surface or a ceiling, and the head rail 16 is attached along the head rail 16. A plurality of movable runners 17 are attached. A curtain 11 is hung on these runners 17 (FIGS. 15 and 16).

On the other hand, 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 phases of pulse signals having different phases and convert them into electric 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 amount of rotation based on the number of counts to arbitrarily set the reference position. Incremental encoder that can be selected and can perform infinite rotation amount coefficient, and the rotation angle of the drive shaft of the electric motor are ^{output in parallel as an absolute numerical value with a 2 n} code, and the output code is read directly. There is an absolute type encoder in which the zero position is determined by detecting the rotation position and the rotation angle with the zero position as the coordinate origin is always output digitally.

In this embodiment, the rotary encoder 13 optically detects the rotation angle and rotation direction of the drive shaft 12a of the electric motor 12 as two-phase pulse signals having different phases, and converts them into electric signals. It is an incremental encoder having detection conversion elements 21a and 21b (FIGS. 1, 2 and 6). Specifically, the rotary encoder 13 has first and second light emitting elements 18a and 18b that emit light, respectively, 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 first distance P ₁ fixed slit plate 19 formed at a first and second fixed slit 19a, the first and second light receiving element for converting into an electric signal by receiving respectively the light passing through the 19b A rotary slit plate 22 that rotates together with the first and second detection conversion elements 21a and 21b and the drive shaft 12a (FIGS. 5 and 6) and has a plurality of rotary slits 22a formed at a _{second interval P2.} (Fig. 2). The first and second light emitting elements 18a and 18b and the first and second light receiving elements 21a and 21b are fixed to the case 12b side. Specifically, the first and second light emitting elements 18a and 18b are fixed to the case 12b (FIGS. 5 and 6) of the electric motor 12 via the element and the like accommodating 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, the panel 24 and the housing 26 so as to face the first and second light emitting elements 18a and 18b, respectively. Will be done. The first interval P ₁ is the pitch of the first and second fixed slits 19a and 19b, and the second interval P ₂ is the pitch of the adjacent rotary slits 22a and 22a.

The electric motor 12 is a motor with a speed reducer, 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 the 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 on a 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 the panel 24, and an element or the like accommodating case 23 having a recess 23a formed in the center is attached to the inner surface of the panel 24. Further, the element or the like accommodating case 23 is divided into a first accommodating portion 23b and a second accommodating portion 23c by the recess 23a. Then, 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 accommodated in the second accommodating portion 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 rotary slit plate 22 is attached to the drive shaft 12a so as to be located between the first and second light emitting elements 18a and 18b and the fixed slit plate 19, and the first and second light emitting elements 18a and 18b are emitted. It is configured to pass or block the light (Fig. 2). Specifically, the rotary slit plate 22 is formed in a disk shape, and a plurality of rotary slits 22a are formed _{on the outer peripheral edge thereof with a second interval P 2 (FIGS. 5 and 6).} ). Further, the rotary slit plate 22 is fitted in the vicinity of the base end of the drive shaft 12a, and the outer peripheral edge of the rotary slit plate 22 in which the plurality of rotary slits 22a are formed is loosely inserted into the recess 23a of the element or the like accommodating case 23. As a result, the outer peripheral edge of the rotary slit plate 22 on which the plurality of rotary slits 22a are formed is located between the first and second light emitting elements 18a and 18b and the fixed slit plate 19, and the rotary slit plate 22 is the drive shaft 12a. By rotating together with the light, the light emitted by the first and second light emitting elements 18a and 18b is passed or blocked.

First and second fixed slit 19a, the first distance P ₁ of 19b, rotary slit 22a of the adjacent ones, a second relation between the distance P ₂ of 22a, namely P _1: P ₂ is, for example 3: 4 Can be set to (Fig. 2). The first and second fixed slit 19a, the width B ₁ of the 19b, the relationship between the width B ₂ of the rotary slit 22a, i.e. B _1: B _2, for example 1: can be set to 3. Further, P ₁ : B ₁ can be set to, for example, 6: 1, and P ₂ : B ₂ can be set to, for example, 8: 3. The distance between the first and second light emitting elements 18a and 18b and the distance between the first and second light receiving elements 21a and 21b are the same _{as the first distance P1 of the first and second fixed slits 19a and 19b.} Set.

The first light emitting element 18a is provided so as to face 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 reaches the first light receiving element 21a through the rotating slit 22a and the first fixed slit 19a, and the first light receiving element 21a causes the light to reach the first light receiving element 21a. There are cases where light is detected, and cases where 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, the 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 so as to face the second fixed slit 19b and the second light receiving element 21b (FIG. 2). Then, as the rotating slit plate 22 rotates, the light emitted by the second light emitting element 18b reaches the second light receiving element 21b through the rotating slit 22a and the second fixed slit 19b, and the second light receiving element 21b causes the light to reach the second light receiving element 21b. There are cases where light is detected, and cases where light is not detected by the second light receiving element 21b because it is blocked by the rotating slit plate 22 and does not reach the second light receiving element 21b. As a result, the detection and non-detection of light by the second light receiving element 21b are alternately repeated. In the present specification, it is assumed that the A phase of the encoder is the detection state when the light is detected by the first light receiving element 21a, and the A phase of the encoder is not yet detected when the light is not detected by the first light receiving element 21b. It is assumed that it is in the detection state (FIGS. 1, 3 and 9). Further, it is assumed that the B phase of the encoder is the detection state when the light is detected by the second light receiving element 21b, and the B phase of the encoder is not detected when the light is not detected by the second light receiving element 21b. Suppose there is. The first and second light emitting elements 18a and 18b are formed to have the same shape and the same structure, and the first and second fixed slits 19a and 19b are formed to have the same shape and the same size. The light receiving elements 21a and 21b are of 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 leading runner 17a and the electric motor 12 among the plurality of runners 17. 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 hung on the drive pulley 29a and the driven pulley 29b. The belt 29c is arranged in the head rail 16, and the leading runner 17a is connected 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 the belt 29c of the curtain moving mechanism 29, and the leading runner 17a moves along the head rail 16 and the succeeding runner 17b. The curtain 11 is configured to be opened and closed by 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 outputs of the remote control switch 31 are input to the control input of the controller 14, and are input to the control output of the controller 14. Is connected to the electromagnetic clutch 27 via the electromagnetic clutch drive circuit 32, and is connected to the electric motor 12 via the motor drive circuit 33. Further, the controller 14 is provided with a memory 14a. In the memory 14a, the position of the leading runner 17a on the headrail 16 based on the rotation speed and rotation angle of the drive shafts 12a detected by the first and second light receiving elements 21a and 21b, and the preset curtain 11 described later. The signal waveform pattern of the rotary encoder 13 at the closing limit position and the intermediate position of the electric motor 12, the control content of the electric motor 12 based on the detection output of the remote control switch 31, and the like are stored.

The electric motor 12 is configured to be driven by the manual movement of the curtain 11 by a predetermined amount or more, that is, the movement of the leading runner 17a by a hand to pull the curtain 11 by a predetermined amount or more as a trigger. Touch motion function). Specifically, when the curtain 11 is pulled by hand and the leading runner 17a moves by a predetermined amount or more (for example, 5 cm or more), 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 the direction thereof are detected, and the controller 14 operates the electric motor 12 based on the detection 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 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. Will be done. For example, as shown in FIG. 1, when the stop position of the electric motor 12 is set to "00" in the binary display (A phase and B phase of the encoder), the curtain is manually opened from this position in the opening direction (right direction). When it is moved, it becomes a signal waveform pattern in the open direction that changes from "01" → "11" → "10" → "00" → "01", and when the curtain is manually moved in the closed direction (leftward) 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 transfers the signal waveform pattern of the rotary encoder 13 at this stop position to the memory 14a as described above. It is configured to memorize and stop the supply of electric power to the second light receiving element 21b (FIGS. 1, 2 and 6). However, in this embodiment, the controller 14 is located at the position closest to the stop position of the electric motor 12 when the electric motor 12 is stopped based on the detection outputs of the first and second light receiving elements 21a and 21b. The electric motor 12 rotates the rotary slit plate 22 in the forward or reverse direction to a position where the light emitted by the hemorrhoids 1 and the second light emitting elements 18a and 18b is not received by the first and second light receiving elements 21a and 21b. Is 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 received by the first and second light receiving elements. This refers to a case where the rotary slit plate 22 is rotated forward or reverse to a position where the elements 21a and 21b are not received and stopped.

On the other hand, the signal for starting the operation of the stopped electric motor 12 is a trigger signal detected by the first light receiving element 21a and input to the controller 14 triggered by the manual movement of the curtain by a predetermined amount or more. This is a switch signal input to the controller 14 based on the 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 the manual movement of the curtain 11. Then, 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. It is configured to discriminate. Here, the time when the first light receiving element 21a detects the manual movement of the curtain 11 means 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 the binary display (A phase and B phase of the encoder), it is manually operated from this position in the opening direction (right direction). When the curtain is moved with, it is the "signal waveform change detection" position on the right side, and when the curtain is manually moved in the closing direction (left direction), 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 the 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 determines that 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. The signal waveform pattern of 13 is stored in the memory 14a, and the supply of electric power to the second light receiving element 21b is stopped. Further, when the operation start signal of the electric motor 12 is input based on the switch operation, the controller 14 determines the rotation direction of the electric motor 12 based on the switch operation and transfers the second light receiving elements 21a and 21b to the second light receiving elements 21a and 21b. It is configured to start supplying power.

The operation of the electric switchgear configured in this way will be described.

(1) Case of storing the closing limit position of the curtain 11 in advance This will be described with reference to the flowchart of FIG. 7. First, the power of the electric switchgear is turned on while the curtain 11 is stopped, and the detection of the closing limit position is started. Next, by pressing the close button (not shown) of 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 the electric motor 12 is rotated to rotate the drive shaft 12a, the drive pulley 29a, and the drive pulley 29a. The leading runner 17a is moved via the belt 29c. As a result, the curtain 11 moves and is 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 does not change, the controller 14 determines that the curtain 11 of the electric switchgear physically reaches the closing limit position and stops, stops the electric motor 12, and rotates 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 the B phase of the encoder are in the undetected state based on the detection outputs of the first and second light receiving elements 21a and 21b. For example, as shown in FIG. 3B, at the position where the curtain 11 is stopped (the physical closing limit position of the electric switchgear), the A phase of the encoder is in the detected state and the B phase of the encoder is not detected. If so, the controller 14 controls the electromagnetic clutch 27 and the electric motor 12 to emit the light emitted by the first and second light emitting elements 18a and 18b at the position closest to the stopped position. 2 The rotary slit plate 22 is reversed to a position where the light receiving elements 21a and 21b are not received, that is, a position where both the A phase and the B phase of the encoder are in the undetected state as shown in FIG. 3 (b). Then, the electric motor 12 is stopped at this position, the rotation of the drive shaft 12a is blocked 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 the B phase of the encoder are in the undetected state at the position where the curtain 11 is stopped (the physical closing limit position of the electric switchgear), that position is the actual stop position (closing) of the curtain 11. It is stored in the memory 14a as a limit position). The opening limit position of the curtain 11 is also stored in the memory 14a in the same manner as described above.

(2) Case of storing each intermediate position of the curtain 11 in advance This will be described with reference to the flowchart of FIG. In this embodiment, the intermediate position of the curtain 11 is set from the first to the kth. First, the power of the electric switchgear is turned on while the curtain 11 is stopped, and the 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 closing direction. 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. Then, when the curtain 11 reaches the first intermediate position and the stop button (not shown) of the remote control switch 31 is pressed, the controller 14 stops the electric motor 12 and the electromagnetic clutch 27 prevents the rotation of the drive shaft 12a. Then, the encoder signal does not change.

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

On the other hand, when both the A phase and the B phase of the encoder are in the undetected state at the position where the curtain 11 is stopped (the timing when the stop signal is received), that position is the actual stop position of the curtain 11 (the first middle). The position) is stored in the memory 14a, and is stored in the memory 14a in association 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 corresponding to the second to kth buttons (not shown) of the remote controller switch 31. As a result, when the nth button (any one of the 1st 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 A phase of the encoder and Since both the B phases are in the 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 exerted on the curtain 11 at the intermediate position and then the curtain 11 is moved in the closing direction to stop the curtain 11 at the fully closed position or the intermediate position. This will be described with reference to the flowchart of 12. The power has already been turned on to the electric switchgear, 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 the supply of electric power to the second light emitting element 18b and the second light receiving element 21b. As shown in FIG. 1, when the stop position of the electric motor 12 is set to "00" in the binary display (A phase and B phase of the encoder), the signal waveform pattern is opened from this position (to the right). ) When the curtain 11 is manually moved, the signal waveform pattern in the open direction changes from "01" → "11" → "10" → "00" → "01", and manually in the closed direction (left direction). It 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 first light receiving element 21a detects the manual movement of the curtain 11 by manually operating the curtain 11 in the direction of closing the curtain 11, specifically, as shown in FIG. 1, the electric motor 12 is stopped. When the position is set to "00" in the binary display (A phase and B phase of the encoder), the curtain 11 is manually moved from this position in the closing direction (leftward) to the "signal waveform change detection" position on the left side. When it reaches, the controller 14 starts supplying electric power to the second light emitting element 18b and the second light receiving element 21b.

Then, when the curtain 11 is manually moved by a predetermined amount or more, the first and second light receiving elements 21a and 21b generate a trigger signal (a signal input to the controller 14 triggered by the manual movement of the curtain 11 by a predetermined amount or more). Upon detection, the controller 14 determines the rotation direction of the electric motor 12 based on the detection outputs and signal waveform patterns of the first and second light receiving elements 21a and 21b. Specifically, as shown in FIG. 1, the signal waveform patterns detected by the first and second light receiving elements 21a and 21b are displayed in binary (A phase and B phase of the encoder) from "10" to "11". Since it changes to "01", it is determined that the signal waveform pattern is in the closed direction. Then, the controller 14 controls the electromagnetic clutch drive circuit 32 and the motor drive circuit 33 to allow the drive shaft 12a to rotate by the electromagnetic clutch 27, and rotates the electric motor 12 in the closing direction of the curtain to cause the drive shaft. The leading runner 17a is moved in the closing direction of the clutch via the 12a, the drive pulley 29a, and the belt 29c. As a result, even if the hand is released from the curtain 11, the curtain 11 moves and the encoder moves until the stop button of the remote control switch 31 is pressed or the curtain 11 reaches the closing limit position without pressing the stop button of the remote control switch 31. 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. Then, 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, stops the electric motor 12, and uses the electromagnetic clutch 27. The rotation of the drive shaft 12a is blocked, and the encoder signal does not change.

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

On the other hand, when the curtain 11 reaches the closing limit position without pressing the stop button of the remote control switch 31 and the encoder signal does not change, the controller 14 determines that the curtain 11 physically reaches the closing limit position and stops. The electric motor 12 is stopped and the electromagnetic clutch 27 prevents the drive shaft 12a from rotating. This stop position is already stored in the memory 14a as the actual stop position (close limit position) of the curtain 11, and since both the A phase and the B phase of the encoder have not been detected, the first and second light receiving elements 21a and 21b stop working. Further, the controller 14 stores the signal waveform pattern of the rotary encoder 13 at the stop position in the memory 14a, and stops the supply of electric 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 the light from the first light emitting element 18a by the rotary slit plate 22. Since it does not operate, the power consumption of the rotary encoder 13 can be reduced.

When the curtain 11 is manually moved by less than a predetermined amount to be stopped, the controller 14 stores the signal waveform pattern of the rotary encoder 13 at the stop position in the memory 14a, and also stores the second light emitting element 18b and The supply of electric power to the second light receiving element 21b is stopped. Further, when the timing of supplying electric power to the second light emitting element 18b and the second light receiving element 21b is later than the speed of manually moving the curtain 11, 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 by the signal pattern detected after the 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 in which the power continues to be supplied. The number (the number of "signal waveform change detection" positions in the binary display (A phase only) of FIG. 1 (b)) is measured, and the measured values are detected by the first and second light receiving elements 21a and 21b. By combining with, the manual movement distance of the curtain 11 from the stop position can be calculated. In this case, although the manual movement direction of the curtain 11 can be determined, there is a possibility that an error may occur between the detection position of the leading runner 17a by the rotary encoder 13 and the actual position of the leading runner 17a. The above error can be corrected by correcting the origin at the fully closed position and the fully open position of the curtain 11.

(4) When the curtain 11 in the intermediate position is moved in the direction of closing the curtain 11 based on the operation of the remote control switch 31 to stop the curtain 11 in the fully closed position or the intermediate position. FIGS. 13 and 14 This will be described based on the flowchart of. The power has already been turned on to the electric switchgear, 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 the supply of electric 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 curtain the electric motor 12. The leading runner 17a is moved via the drive shaft 12a, the drive pulley 29a, and the belt 29c by rotating in the closing direction of. As a result, the curtain 11 moves in the closing direction. The curtain 11 is moving until the stop button of the remote control switch 31 is pressed or the curtain 11 reaches the closing limit position without pressing the stop button of the remote control switch 31, and the encoder signal, that is, the first rotary encoder 13. And the signals detected by the second light receiving elements 21a and 21b continue to change. Then, 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, stops the electric motor 12, and uses the electromagnetic clutch 27. The rotation of the drive shaft 12a is blocked, and the encoder signal does not change.

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

On the other hand, when the curtain 11 reaches the closing limit position without pressing the stop button of the remote control switch 31, the controller 14 determines that the curtain 11 physically reaches the closing limit position and stops when the encoder signal does not change. The electric motor 12 is stopped and the electromagnetic clutch 27 prevents the drive shaft 12a from rotating. This stop position is already stored in the memory 14a as the actual stop position (close limit position) of the curtain 11, and since both the A phase and the B phase of the encoder have not been detected, the first and second light receiving elements 21a and 21b stop working. Further, the controller 14 stores the signal waveform pattern of the rotary encoder 13 at the stop position in the memory 14a, and stops the supply of electric 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 the light from the first light emitting element 18a by the rotary slit plate 22. Since it does not operate, the power consumption of the rotary encoder 13 can be reduced.

In the above embodiment, the first and second light receiving elements include the first and second light receiving elements that optically detect the rotation angle and rotation direction of the drive shaft of the electric motor as two-phase pulse signals having different phases and convert them into electric signals. The rotary encoders having the first and second detection conversion elements have been mentioned, but the first is to magnetically detect the rotation angle and rotation direction of the drive shaft of the electric motor as two-phase pulse signals having different phases and convert them into electric signals. And a second magnetic sensor may be used. In this case, the rotary encoder 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 on the rotary disk, and the magnetism of the rotary disk fixed to the case side of the electric motor. It has first and second detection conversion elements including 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 a first and second light receiving element is mentioned, but three or more detection conversion elements composed of three or more light receiving elements and An absolute encoder using three or more detection conversion elements composed of three or more magnetic sensors may be used. In this case, by using three or more detection conversion elements, the rotation angle of the drive shaft of the electric motor ^{is output in parallel as an absolute numerical value with a code of 2 n} , so that the zero position of the drive shaft is always determined. The rotation angle with the zero position as the coordinate origin is output digitally. For example, the light emitted from the three light emitting elements moves relative to the three rotary slit plates having the optical slits of the binary code pattern corresponding to the rotational position of the drive shaft and the three fixed slit plates. The presence or absence of the light is detected by the three light receiving elements, and the light is output as a binary absolute position detection signal. As a result, in the absolute type encoder, since there is no possibility that an error occurs between the detection position of the leading runner by this encoder and the actual position of the leading runner, the curtain is periodically set at the fully closed position and the fully open position. There is no need to correct the origin.

Further, in the above embodiment, the curtain that can move along the head rail is mentioned as the opening / closing body, but a plurality of louvers that can move along the head rail as the opening / closing body may be used. Further, in the above embodiment, the rotary slit plate is positioned between the light emitting element and the fixed slit plate, but the rotary slit plate may be positioned between the fixed slit plate and the light receiving element. Further, in the above embodiment, the first and second light emitting elements are provided so as to face the first and second light receiving elements, respectively, but a single light emitting element may be used. In this case, the light emitted by the single light emitting element is configured to be received by the first and second light receiving elements through the first and second fixed slits. Therefore, the controller stops the supply of electric power to the second light receiving element when the first and second light receiving elements detect the operation stop signal of the electric motor, but supplies the electric power to a single light emitting element. Does not stop.

11 Curtain (opening and closing body)
12 Electric motor 12a Drive shaft 12b Case 13 Rotary encoder 14 Controller 14a Memory 16 Head rail 17 Runner 17a First runner 17b Subsequent runners 18a, 18b 1st and 2nd light emitting elements 19 Fixed slit plates 19a, 19b 1st and 2nd Fixed slit 21a 1st light receiving element (1st 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 an 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 having different phases, and the electric motor based on the detection output of the rotary encoder. In an electric opening / closing device equipped with a controlling controller
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 phases of pulse signals having different phases and convert them into electric signals. And
The operation start signal of the electric motor is a trigger signal detected by the two or more detection conversion elements and input to the controller by using the manual movement of the opening / closing body by a predetermined amount or more as a trigger.
When the two or more detection conversion elements detect the operation stop signal of the electric motor, the controller stores the signal waveform pattern of the rotary encoder at the stop position in the memory and of the two or more detection conversion elements. When the power supply to the other detection conversion element is stopped while the power supply to the detection conversion element of 1 is stopped and the detection conversion element of 1 detects the manual movement of the opening / closing body, the above When the power supply to the other detection conversion elements is started and the two or more detection conversion elements detect the trigger signal, the detection output of the two or more detection conversion elements and the signal waveform pattern are used as the basis for the detection output. An electric opening / closing device characterized in that it is configured to determine the direction of rotation of an electric motor. The rotary encoder
A light emitting element that is fixed to the case side of the electric motor and emits light,
A fixed slit plate fixed to the case side of the electric motor so as to face the light emitting element, and first and second fixed slits formed with a first interval through which light emitted by the light emitting element passes.
A first and second detection conversion element composed of a light receiving element fixed to the case side of the electric motor and receiving light passing through the first and second fixed slits and converting it into an electric 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 with the drive shaft and on the same circumference. The electric opening / closing device according to claim 1, wherein a plurality of rotary slits are formed at different second intervals and have a rotary slit plate for passing or blocking the light emitted by the light emitting element. The rotary encoder
A rotating disk fixed to the drive shaft of the electric motor, rotatably configured with the drive shaft, and having a magnetic pattern formed therein.
The electric switchgear according to claim 1, further comprising first and second detection conversion elements, which are fixed to the case side of the electric motor and include magnetic sensors that detect a magnetic pattern of the rotating disk and convert it into an electric signal. When the first and second detection conversion elements detect the stop of operation of the electric motor, the controller emits light emitted by the light emitting element at a position closest to the stop position of the electric motor. The electric switchgear according to claim 2, wherein the electric motor is controlled so that the rotary slit plate is rotated forward or reverse to a position where the second detection conversion element is not received. The light emitting element is composed of first and second light emitting elements provided so as to face the first and second detection conversion elements, respectively, and the controller is used 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 detection conversion element facing the second detection conversion element is started. The electric opening / closing device according to claim 2 or 4, wherein the supply of power to the light emitting element is also started. The operation start signal of the electric motor is a switch signal input to the controller based on the switch operation.
When the first and second detection conversion elements detect the operation stop signal of the electric motor, the controller stores the signal waveform pattern of the rotary encoder at the stop position in the memory and the second detection conversion element. When the switch signal is input, the supply of electric power to the electric motor is stopped, the rotation direction of the electric motor is determined based on the switch operation, and the electric power supply to the second detection conversion element is started. The electric switchgear according to any one of claims 1 to 3 configured in the above. The electric motor is attached to the end of a head rail mounted on a window frame, wall surface or ceiling.
A plurality of runners that can move along the head rail are attached to the head rail.
An opening / closing body is hung on the plurality of runners,
An opening / closing body moving mechanism is provided between the leading 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 switchgear moving mechanism, the leading runner moves along the head rail, and the succeeding runner follows, so that the switchgear moves. The electric switchgear according to any one of claims 1 to 6, wherein the electric switchgear is configured to be used. The electric switchgear according to claim 7, wherein the switchgear is a curtain or a plurality of louvers that can move along the head rail.

Images