JP6068889B2 - Switchgear - Google Patents

Description

  The present invention relates to an opening / closing device that opens and closes an opening / closing body, and more particularly, to an opening / closing device that controls an opening / closing operation of an opening / closing body in accordance with a signal input to a control circuit.

  Conventionally, in this type of switchgear, an open relay and a close relay provided on a power source side wiring of a driving source are operated in response to an open signal, a close signal, and a stop signal input from an operation unit, and contact points of these relays Thus, there is one in which the phase of the drive source is switched to reverse the drive source. In the relay control circuit as described above, if the open relay and the closed relay are energized at the same time due to malfunction, all the contacts of the open relay and the closed relay are “closed” almost simultaneously, and an overcurrent breaker, a fuse, etc. There is a risk of operation. Therefore, in the relay control circuit as described above, a so-called interlock circuit is generally configured so that the two relays are not operated simultaneously (for example, see Patent Document 1).

  By the way, a recent switchgear includes a microcomputer including a CPU, a memory, an input / output device, and the like in order to enable more complicated control easily. There is one that operates the open and closed relays on the side. Of course, in such a control circuit using a microcomputer, the microcomputer is programmed so that the open relay and the closed relay are not operated simultaneously.

  However, in the switchgear equipped with the microcomputer control circuit, a signal for operating the open relay and a signal for operating the closed relay are simultaneously output from the microcomputer due to runaway or malfunction of the microcomputer due to noise or the like. Therefore, the open relay and the closed relay may be operated at the same time.

JP 2009-52235 A

  The present invention is to deal with the above-mentioned conventional situation as an example, and even if a microcomputer runs away or malfunctions, it is simple to operate a plurality of relays at the same time. The purpose is to prevent by structure.

One means for solving the above problems is an opening / closing body that opens and closes in a vertical direction by partitioning or opening a space, and a guide rail that guides the opening / closing body in an up / down direction on an end side in a lateral width direction thereof. A storage section for storing the opening / closing body at the upper side when the opening operation is performed, a drive source that operates bidirectionally to open / close the opening / closing body, a control circuit that controls the drive source, and the opening / closing An opening / closing device for opening and closing a body, and an operation unit for inputting a closing signal to the control circuit , wherein the control circuit performs arithmetic processing on an input signal from the operation unit by a CPU and results of the processing A microcomputer that outputs a signal to be processed according to the non-contact logic circuit that logically processes the signal to be processed input from the microcomputer without using a CPU and outputs a relay control signal according to the processing result; Nothing A plurality of relays that selectively operate according to a relay control signal input from a point logic circuit, and the drive source is an AC motor that reverses when a power supply line is switched. An open relay that operates the driving source in one direction corresponding to the opening operation of the opening / closing body by switching a power supply line, and a closing relay that operates the driving source in the other direction corresponding to the closing operation of the opening / closing body; The non-contact logic circuit includes two processed signal input paths for inputting two processed signals from the microcomputer, and two relays for outputting relay control signals to the open relay and the closed relay, respectively. A control signal output path; a first AND circuit; and a second AND circuit, each AND circuit including an H active input terminal, an L active input terminal, and an H active An active input terminal, the H active input terminal constitutes the processed signal input path, the H active output terminal constitutes the relay control signal output path, and the first AND circuit has an H active input terminal; The L active input terminal of the second AND circuit is electrically connected to form one of the processed signal input paths. The L active input terminal of the first AND circuit and the H active input of the second AND circuit The input terminal is electrically connected to form the other processed signal input path, the H active output terminal of the first AND circuit is the one relay control signal output path, and the second AND circuit The H active output terminal is the other relay control signal output path, the operation section includes an open switch and a close switch having an automatic return a contact, and the microcomputer includes the open switch and the close switch. When the switch is operated at the same time, the output state to the two processed signal input paths is not changed, and the non-contact logic circuit operates the open relay and the closed relay simultaneously. The relay control signal is output from the relay control signal output circuit of the first AND circuit and the relay control signal output of the second AND circuit .

  Since the present invention is configured as described above, it is possible to prevent a plurality of relays from operating simultaneously with a simple structure even if a microcomputer runs away or malfunctions.

The schematic diagram which shows an example of the switchgear concerning this invention. The electric circuit diagram which shows the control circuit of the switchgear. The table which shows the input / output relation of the microcomputer. A table showing the input / output relationship of the contactless logic circuit. The electric circuit diagram which shows the other example of a control circuit. The truth table of the non-contact logic circuit in the control circuit shown in FIG.

A first feature of the present embodiment is an opening / closing device including an opening / closing body that opens and closes, a drive source that operates bidirectionally to open / close the opening / closing body, and a control circuit that controls the drive source In the control circuit, the control circuit performs arithmetic processing on the input signal by the CPU and outputs a processed signal according to the processing result, and logically processes the processed signal input from the microcomputer without using the CPU. A non-contact logic circuit that outputs a relay control signal according to a processing result, and a plurality of relays that selectively operate according to a relay control signal that is input from the non-contact logic circuit; A relay control signal is output so that a plurality of relays are not operated simultaneously.
Here, the non-contact logic circuit in the present embodiment is an electronic circuit having no mechanical contact composed of a semiconductor switch such as a diode, a transistor, or a logic circuit IC, and not performing arithmetic processing by the CPU. This non-contact logic circuit does not include a microcomputer to be described later.
In addition, the microcomputer in this embodiment means a device that is integrally provided with a CPU, a memory, an input / output port, and the like, and that calculates and outputs an input signal by the CPU. The microcomputer includes a sequencer, a personal computer, and the like. However, the above-described contactless logic circuit is not included.
According to the switchgear having the above characteristics, the processed signal input from the microcomputer is logically processed by the contactless logic circuit, and a relay control signal corresponding to the logical result is output. Relay operates selectively. At this time, since the non-contact logic circuit outputs the relay control signal so that the plurality of relays do not operate simultaneously, it is possible to prevent problems caused by the plurality of relays operating simultaneously.

As a second feature, the drive source is an AC motor that reverses when a power line is switched, and the plurality of relays include a relay that operates to replace the power line.
The AC motor includes a three-phase AC motor that reverses when the phase of the three-phase AC power line is switched, a capacitor motor that reverses when the connection of the single-phase AC power line is switched, and the like. .

  As a third feature, the plurality of relays include an open relay that operates the driving source in one direction corresponding to the opening operation of the opening / closing body, and another that corresponds to the closing operation of the opening / closing body. A non-contact logic circuit, two non-processed signal input paths for inputting two processed signals from the microcomputer, and relay control for the open relay and the closed relay, respectively. And two relay control signal output paths for outputting signals.

  As a fourth feature, the contactless logic circuit includes a first AND circuit and a second AND circuit, and each AND circuit includes an H active input terminal, an L active input terminal, and an H active output terminal. The signal input path to be processed is configured by an H active input terminal, and the relay control signal output path is configured by an H active output terminal.

  As a fifth feature, the opening / closing body that opens and closes in a vertical direction by partitioning or opening a space, a guide rail that guides the opening / closing body in an up-down direction on the end side in the width direction, and an opening operation The shutter device is configured to include a storage unit for storing the opening / closing body at the upper side thereof and an operation unit for inputting an opening signal and a closing signal for opening / closing the opening / closing member to the microcomputer.

  As a sixth feature, one of the processed signal input paths is configured by electrically connecting the H active input terminal of the first AND circuit and the L active input terminal of the second AND circuit, The L active input terminal of one AND circuit and the H active input terminal of the second AND circuit are electrically connected to form the other processed signal input path, and the H active output of the first AND circuit The terminal was used as one of the relay control signal output paths, and the H active output terminal of the second AND circuit was used as the other relay control signal output path.

  As a seventh feature, the H active input terminal of the first AND circuit is one of the processed signal input paths, the H active input terminal of the second AND circuit is the other of the processed signal input paths, The H active output terminal of one AND circuit and the L active input terminal of the second AND circuit are electrically connected to form one of the relay control signal output paths, and the H active output terminal of the second AND circuit And the L active input terminal of the first AND circuit are electrically connected to form the other relay control signal output path.

  Next, a preferred specific example of the above embodiment will be described in detail with reference to the drawings.

  The opening / closing device 1 described below is disposed in or inside an opening portion or inside of a housing such as a house, building, warehouse, factory, underground mall, tunnel, or vehicle loading platform, and opens and closes the opening portion or opens a space inside the housing. It can be applied as a shutter device for partitioning or opening.

  As shown in FIG. 1, the opening / closing device 1 includes an opening / closing body 10 that opens and closes by partitioning or opening a space by sliding in the up / down direction, and the opening / closing body 10 in an up / down direction on the end side in the lateral width direction. A guide rail 20 for guiding, a storage unit 30 for storing the opening / closing body 10 when opened, and an operation unit 40 for opening / closing the opening / closing body 10 are provided. A signal, a closing signal, and a stop signal are transmitted to the control circuit 34 in the storage unit 30 and output from the control circuit 34 to control the switch 33 by a control power source.

The opening / closing body 10 is connected to the lower opening side of the opening / closing body main body 11 having a substantially rectangular shape in plan view, and contacts the seating target portion P (for example, a floor surface, the ground, a frame member, etc.) when fully closed. And a possible seat plate 12.
The openable / closable body 11 is formed by connecting a plurality of so-called slats 11a formed by bending a horizontally long substantially rectangular metal plate so as to rotate between the slats 11a, 11a adjacent to each other in the vertical direction. A seat plate 12 is connected to the lower end side of the opening / closing body 11, and the seat plate 12 detects the presence of an obstacle in the opening / closing path of the opening / closing body 10 or in the vicinity of the path as necessary. An object sensing means (not shown) is configured.

  The guide rail 20 is a metal member having a substantially U-shaped cross section surrounding the end of the opening / closing body 10 in the width direction, and is disposed between the seating target portion P and the storage portion 30 (see FIG. 1). .

  The storage unit 30 includes a substantially rectangular parallelepiped storage case 31 that is long in the width direction of the opening / closing body, a winding body 32 that winds and unwinds the opening / closing body 10 in the storage case 31, and the winding body 32. An opening / closing machine 33 that rotates and brakes via a power transmission means such as a chain and a sprocket, and a control circuit 34 that controls the opening / closing machine 33 are provided (see FIG. 1).

The opening / closing machine 33 is obtained by appropriately improving an opening / closing machine having a structure disclosed in, for example, Japanese Utility Model Laid-Open No. 01-118084, and is supported by a stationary part such as the storage case 31 via a bracket or the like.
The switch 33 includes a drive shaft 33a that transmits a rotational force to the winding body 32, an electric motor 33b (drive source) that rotates the drive shaft 33a, and a brake that restrains and releases the drive shaft 33a. And a device 33c, which is normally rotated, reversed, and stopped by a power source controlled by the control circuit 34 (see FIGS. 1 and 2).

  The electric motor 33b is a three-phase AC motor. When the contact of the open relay RY1 described later is turned on, the electric motor 33b rotates to one side, and when the contact of the closed relay RY2 is turned on, the phase is switched. Rotate in the opposite direction.

  The brake device 33c is maintained in a braking state by an urging force of an internal spring (not shown) in a non-energized state, and when energized, the braking device 33c is operated by the action of an electromagnetic solenoid (not shown). Release the state. In FIG. 2, reference numeral 34f provided on the power supply line of the brake device 33c is a rectifier for supplying a DC voltage to the electromagnetic solenoid.

  The control circuit 34 performs arithmetic processing on the input signal from the operation unit 40 by the CPU and outputs a processed signal according to the processing result, and logically outputs the processed signal input from the microcomputer 34a without using the CPU. A non-contact logic circuit 34b that processes and outputs a relay control signal according to the processing result, and a plurality of relays 34a, 34b, and RY1 are provided.

  The operation unit 40 includes a box-shaped case part and the like, and includes an opening switch 41 and a closing switch 42 having an automatic return a contact, and a stop switch 43 having an automatic return b contact.

  The microcomputer 34a is a programmed logic circuit that integrally includes a CPU, a memory, an input / output port, and the like and operates the CPU based on a program stored in advance in a storage device (not shown). The microcomputer 34a performs arithmetic processing on the signal input from the operation unit 40, and outputs a signal to be processed for processing by the contactless logic circuit 34b from the terminals I1 and I2 according to the processing result. The microcomputer 34a can be an aspect using a sequencer (also referred to as a programmable controller), an aspect electronic using a microprocessor having a CPU, or the like.

The microcomputer 34a is programmed so that the input / output relationship is as shown in the table of FIG.
That is, the microcomputer 34a is in an initial state where the operation unit 40 is not operated (the contact of the open switch 41 is “open”, the contact of the close switch 42 is “open”, and the contact of the stop switch 43 is “closed”). In this case, an L signal (0V signal) is output to each of the processed signal input path I1, the processed signal input path I2, and the braking output path Q3.
Further, the microcomputer 34a is in a state where only the closing switch 42 is operated (the contact of the opening switch 41 is “open”, the contact of the closing switch 42 is “closed”, and the contact of the stop switch 43 is “closed”). In addition, an L signal (0V signal) is output to the processed signal input path I1, an H signal (5V signal) is output to the processed signal input path I2, and an H signal (5V signal) is output to the braking output path Q3. Maintain state. This state is canceled when the stop switch 43 is operated and the contact is “open”.
The microcomputer 34a is in a state where only the open switch 41 is operated (the contact of the open switch 41 is “closed”, the contact of the close switch 42 is “open”, and the contact of the stop switch 43 is “closed”). In addition, the H signal is output to the processed signal input path I1, the L signal is output to the processed signal input path I2, and the H signal is output to the braking output path Q3, and this state is maintained. This state is canceled when the stop switch 43 is operated and the contact is “open”.
Although it is an operation that is not normally performed, if both the open switch 41 and the close switch 42 are operated substantially simultaneously, and both of the contacts are simultaneously closed, the microcomputer 34a The input is not accepted and the output state does not change.

The non-contact logic circuit 34b is an electronic circuit having no mechanical contact and is not subjected to arithmetic processing by the CPU. The non-contact logic circuit 34b includes a first AND circuit 34b1 and a second AND circuit 34b2, and includes a single or a plurality of logic circuits IC.
The contactless logic circuit 34b outputs relay control signals to the two processed signal input paths I1 and I2 for inputting the two processed signals from the microcomputer 34a, and to the open relay RY1 and the closed relay RY2, respectively. Two relay control signal output paths Q1 and Q2.

More specifically, the non-contact logic circuit 34b includes an H active input terminal of the first AND circuit 34b1 (according to FIG. 2, an input terminal on the upper right side of the first AND circuit 34b1), and a second active circuit 34b1. The L active input terminal of the AND circuit 34b2 (according to FIG. 2, the input terminal of the white circle symbol on the upper right side of the second AND circuit 34b2) is electrically connected, and the connected electrical wiring is connected to one of the covered wires. The processing signal input path I1, the L active input terminal of the first AND circuit 34b1 (according to FIG. 2, the input terminal of the white circle symbol on the lower right side of the first AND circuit 34b1), and the second AND circuit The H active input terminal of the circuit 34b2 (according to FIG. 2, the input terminal on the lower right side of the second AND circuit 34b2) is electrically connected, and the connected electric wiring is input to the other processed signal input. The route is I2.
The non-contact logic circuit 34b uses the H active output terminal of the first AND circuit 34b1 (the output terminal on the left side of the first AND circuit 34b1 according to FIG. 2) as one relay control signal output path Q1, The H active output terminal of the second AND circuit 34b2 (according to FIG. 2, the left output terminal of the second AND circuit 34b2) is used as the other relay control signal output path Q2.

The input / output relationship of the non-contact logic circuit 34b is as shown in the table (truth table) of FIG.
That is, when the processed signal input path I1 is an L signal and the processed signal input path I2 is an L signal, the relay control signal output path Q1 is an L signal and the relay control signal output path Q2 is an L signal.
When the processed signal input path I1 is an L signal and the processed signal input path I2 is an H signal, the relay control signal output path Q1 is an L signal and the relay control signal output path Q2 is an H signal.
When the processed signal input path I1 is an H signal and the processed signal input path I2 is an L signal, the relay control signal output path Q1 is an H signal and the relay control signal output path Q2 is an L signal.
When the processed signal input path I1 is an H signal and the processed signal input path I2 is an H signal, the relay control signal output path Q1 is an L signal and the relay control signal output path Q2 is an L signal.

The output of the relay control signal output path Q1 operates the switching circuit including the resistor R1 and the transistor T1, and energizes the coil of the open relay RY1 with the power (DC 12V) of the power converter 34c.
The output of the relay control signal output path Q2 operates a switching circuit composed of a resistor R2 and a transistor T2, and energizes the coil of the closed relay RY2 by the power (DC 12V) of the power converter 34c.
The output of the braking output path Q3 is directly output from the microcomputer 34a, operates a switching circuit including a resistor R3 and a transistor T3, and energizes the coil of the stop relay RY3 by the power (DC12V) of the power converter 34c. .

  The open relay RY1 is electrically wired so as to open and close the three lines of the three-phase power source of the electric motor 33b by the three a contacts. More specifically, the three a contacts of the open relay RY1 are arranged corresponding to the R phase, S phase, and T phase of the power supply line, respectively, and each a contact opens and closes the line of the corresponding phase. To be electrically wired.

  The closed relay RY2 is electrically wired so as to reverse the electric motor 33b by switching the phase of the three-phase power source of the electric motor 33b by the three a contacts. More specifically, two of the three a contacts of the closed relay RY2 are configured so that any two of the R phase, S phase, and T phase of the power supply line are interchanged, respectively. Are electrically wired between the two phases, and the other one contact a is electrically wired to open and close the remaining phases.

  The stop relay RY3 is electrically wired so as to open and close the power supply line of the brake device 33c by one contact a. When the contact a of the stop relay RY3 is “open”, the brake device 33c is in a non-energized state and is maintained in a braking state by the action of an internal spring (not shown). When the contact a of the stop relay RY3 is “closed”, the brake device 33c is energized, and is maintained in the brake released state by the action of an internal electromagnetic solenoid (not shown).

  Further, in FIG. 2, reference numeral NBF is a no-fuse breaker provided in the three-phase AC power source, reference numeral 34c is a power converter for converting a single-phase 200V of the three-phase AC power source into DC 12V, and reference numeral 34d is DC 12V. The two ELSs convert the power to DC5V, and detect the abnormality such as when the opening / closing body 10 that has been opened exceeds the upper limit or when it is wound backward on the winding body 32 and shuts off the power line It is an emergency switch.

Next, the characteristic operation and effect of the switchgear 1 will be described in detail.
In a normal operation, the opening / closing body 10 opens or closes according to the operation of the opening switch 41 or the closing switch 42 of the operation unit 40, and the operation is stopped by the operation of the stop switch 43.
In the unlikely event that the microcomputer 34a runs out of control or malfunctions due to noise or the like, and there is an unintended input from the microcomputer 34a to the contactless logic circuit 34b, the output of the contactless logic circuit 34b is as shown in FIG. As shown in FIG. 2, since both of the two relay control signal output paths Q1 and Q2 do not become the H signal at the same time, the open relay RY1 and the closed relay RY2 are energized simultaneously by the output of the non-contact logic circuit 34b. As a result, the contact of the open relay RY1 and the contact of the closed relay RY2 (see FIG. 5) simultaneously operate to “close”, and the occurrence of a short-circuit current activates the breaker NFB, a fuse (not shown), etc. Can be prevented.

  Next, another example of the control circuit shown in FIGS. 5 and 6 will be described. Since the control circuit 34 'is obtained by changing a part of the control circuit 34 described above, the changed part will be mainly described in detail, and the detailed description will not be repeated.

  The control circuit 34 'is configured by replacing the non-contact logic circuit 34b with a non-contact logic circuit 34b'.

  The non-contact logic circuit 34b ′ includes a first AND circuit 34b1 and a second AND circuit 34b2, and includes two processed signal input paths I1 and I2 for inputting two processed signals from the microcomputer 34a, and an open circuit. Two relay control signal output paths Q1, Q2 for outputting relay control signals to the relay RY1 and the closed relay RY2, respectively.

  The non-contact logic circuit 34b ′ uses the H active input terminal of the first AND circuit 34b1 (according to FIG. 5, the input terminal on the upper right side of the first AND circuit 34b1) as one processed signal input path I1, The H active input terminal of the second AND circuit 34b2 (according to FIG. 5, the lower right input terminal of the second AND circuit 34b2) is the other processed signal input path I2, and the first AND circuit 34b1 H active output terminal (according to FIG. 5, the left output terminal of the first AND circuit 34b1) and L active input terminal of the second AND circuit 34b2 (according to FIG. 5, the upper right of the second AND circuit 34b2) Are connected to each other, and the connected electric wiring is used as one relay control signal output path Q1, and the H active output terminal (see FIG. 5) of the second AND circuit 34b2. For example, the left output terminal of the second AND circuit 34b2 and the L active input terminal of the first AND circuit 34b1 (according to FIG. 5, the input terminal of the white circle symbol on the lower right side of the first AND circuit 34b1). Are electrically connected, and the connected electrical wiring is used as the other relay control signal output path Q2.

The input / output relationship of the non-contact logic circuit 34b ′ is as shown in the table (truth table) of FIG.
That is, when the processed signal input path I1 is an L signal and the processed signal input path I2 is an L signal, the relay control signal output path Q1 is an L signal and the relay control signal output path Q2 is an L signal.
When the processed signal input path I1 is an L signal and the processed signal input path I2 is an H signal, the relay control signal output path Q1 is an L signal and the relay control signal output path Q2 is an H signal.
When the processed signal input path I1 is an H signal and the processed signal input path I2 is an L signal, the relay control signal output path Q1 is an H signal and the relay control signal output path Q2 is an L signal.
When the processed signal input path I1 is an H signal and the processed signal input path I2 is an H signal, one of the relay control signal output paths Q1 and Q2 is an L signal and the other is an H signal. In this case, it is not determined which of the relay control signal output paths Q1 and Q2 is the H signal. Since the control circuit 34 is configured not to accept a signal when the open switch 41 and the close switch 42 are simultaneously “closed”, normally, the processed signal input paths I1 and I2 are as described above. Are not H signals.

Therefore, according to the opening / closing device provided with the control circuit 34 ′, in the normal operation, the opening / closing body 10 is operated in accordance with the operation of the opening switch 41 or the closing switch 42 of the operation unit 40 in the normal operation. Opens or closes, and the operation is stopped by operating the stop switch 43.
If the microcomputer 34a runs out of control or malfunctions due to noise or the like, and there is an unintended input from the microcomputer 34a to the contactless logic circuit 34b, the output of the contactless logic circuit 34b is as shown in FIG. As shown in FIG. 2, since both of the two relay control signal output paths Q1 and Q2 do not become the H signal at the same time, the open relay RY1 and the closed relay RY2 are energized simultaneously by the output of the non-contact logic circuit 34b. As a result, the contact of the open relay RY1 and the contact of the close relay RY2 (see FIG. 5) are simultaneously “closed” to prevent the breaker NFB or a fuse (not shown) from operating due to the occurrence of a short-circuit current. it can.

  According to the above-described embodiment, the operation unit 40 is a wired switch box. However, as another example, a wireless switch box, a remote controller, or the like can be used.

  Further, according to the above embodiment, two relays energized by the relay control signal input from the non-contact logic circuit 34b (or 34b ′) are provided so as to correspond to the two processed signal input paths I1 and I2. However, as another example, a plurality of relays can be provided on one of the two processed signal input paths I1 and I2 or on one and the other. In this case, the plurality of relays may be connected in parallel, connected in a multistage manner, or the like.

  Further, according to the above embodiment, the non-contact logic circuit 34b (or 34b ′) is configured by two AND circuits 34b1 and 34b1, but the non-contact logic circuit 34b (or 34b ′) includes a plurality of relays. As long as the relay control signal is output so as not to operate at the same time, other examples include an aspect using three or more AND circuits, an aspect using a plurality of OR circuits, and an AND circuit and an OR circuit appropriately combined. It is also possible to adopt a mode in which two or more of the above modes, AND circuit, OR circuit, NOT circuit, NAND circuit, NOR circuit, XOR circuit, and the like are appropriately combined.

  Further, according to the above embodiment, the electric motor 33b (drive source) is a three-phase AC motor. However, as another example, the electric motor is a single-phase capacitor motor, and a single-phase AC power source for the single-phase capacitor motor is used. It is also possible to change the wiring by the closed relay RY2 so that the single-phase capacitor motor is reversed.

  Moreover, according to the said Example, although the shutter curtain formed by connecting several slats as an example of the opening / closing body 10 was shown, as another example of this opening / closing body 10, a single or several panel, sheet form, etc. were shown. It is also possible to adopt a mode in which objects and nets are arranged in the opening and closing direction, or a mode in which slats, panels, pipes, sheets, nets, etc. are appropriately combined.

  Moreover, according to the said Example, although it was set as the structure which winds and stores the opening / closing body 10 as an example of the accommodating part 30, as an other example of this accommodating part 30, the opening / closing body 10 is accommodated without winding up. It is also possible to adopt an aspect (for example, an overhead door).

1: Opening / closing device 10: Opening / closing body 30: Storage unit 33: Opening / closing machine 33b: Electric motor (drive source) 33c: Brake device 34, 34 ': Control circuit 34a: Microcomputer 34b1: First AND circuit 34b2: Second AND circuit 34b, 34b ': Non-contact logic circuit 40: Operation unit 41: Open switch 42: Close switch 43: Stop switch RY1: Open relay RY2: Close relay RY3: Stop relay I1: Signal input path to be processed I2: Process Signal input path Q1: Relay control signal output path Q2: Relay control signal output path Q3: Braking output path

Claims (2)

An opening / closing body that opens and closes in a vertical direction by partitioning or opening a space, a guide rail that guides the opening / closing body in an up / down direction on an end side in a lateral width direction, and the opening / closing body in an opening operation A storage unit that is stored on the upper side, a drive source that operates in both directions so as to open and close the opening / closing body, a control circuit that controls the driving source, and an open signal and a closure for opening / closing the opening / closing body In a switchgear provided with an operation unit for inputting a signal to the control circuit ,
The control circuit includes: a microcomputer that performs arithmetic processing on an input signal from the operation unit by a CPU and outputs a processed signal according to the processing result; and a logical process for the processed signal input from the microcomputer without using the CPU A non-contact logic circuit that outputs a relay control signal according to the processing result, and a plurality of relays that are selectively operated by a relay control signal input from the non-contact logic circuit,
The drive source is an AC motor that reverses when a power supply line is replaced,
The plurality of relays correspond to an open relay that operates the driving source in one direction corresponding to the opening operation of the opening / closing body by replacing the power supply line, and the driving source corresponds to the closing operation of the opening / closing body. Including a closed relay that operates in the other direction,
The contactless logic circuit includes two processed signal input paths for inputting two processed signals from the microcomputer, and two relay control signal outputs for outputting relay control signals to the open relay and the closed relay, respectively. A path, a first AND circuit, and a second AND circuit;
Each AND circuit includes an H active input terminal, an L active input terminal, and an H active output terminal. The H active input terminal constitutes the processed signal input path, and the H active output terminal controls the relay. Configure the signal output path,
The H active input terminal of the first AND circuit and the L active input terminal of the second AND circuit are electrically connected to constitute one of the processed signal input paths,
The L active input terminal of the first AND circuit and the H active input terminal of the second AND circuit are electrically connected to constitute the other processed signal input path,
The H active output terminal of the first AND circuit is one of the relay control signal output paths,
The H active output terminal of the second AND circuit is the other relay control signal output path,
The operation unit includes an open switch and a close switch having an automatic return a contact,
The microcomputer is configured not to change the output state to the two processed signal input paths when the open switch and the close switch are operated simultaneously,
The non-contact logic circuit is configured to prevent the open relay and the closed relay from simultaneously closing, so that the relay control signal output circuit of the first AND circuit and the relay control signal of the second AND circuit A switchgear characterized by outputting a relay control signal from the output . An opening / closing body that opens and closes in a vertical direction by partitioning or opening a space, a guide rail that guides the opening / closing body in an up / down direction on an end side in a lateral width direction, and the opening / closing body in an opening operation A storage unit that is stored on the upper side, a drive source that operates in both directions so as to open and close the opening / closing body, a control circuit that controls the driving source, and an open signal and a closure for opening / closing the opening / closing body In a switchgear provided with an operation unit for inputting a signal to the control circuit,
The control circuit includes: a microcomputer that performs arithmetic processing on an input signal from the operation unit by a CPU and outputs a processed signal according to the processing result; and a logical process for the processed signal input from the microcomputer without using the CPU A non-contact logic circuit that outputs a relay control signal according to the processing result, and a plurality of relays that are selectively operated by a relay control signal input from the non-contact logic circuit,
The drive source is an AC motor that reverses when a power supply line is replaced,
The plurality of relays correspond to an open relay that operates the driving source in one direction corresponding to the opening operation of the opening / closing body by replacing the power supply line, and the driving source corresponds to the closing operation of the opening / closing body. Including a closed relay that operates in the other direction,
The contactless logic circuit includes two processed signal input paths for inputting two processed signals from the microcomputer, and two relay control signal outputs for outputting relay control signals to the open relay and the closed relay, respectively. A path, a first AND circuit, and a second AND circuit;
Each AND circuit includes an H active input terminal, an L active input terminal, and an H active output terminal. The H active input terminal constitutes the processed signal input path, and the H active output terminal controls the relay. Configure the signal output path,
The H active input terminal of the first AND circuit constitutes one of the processed signal input paths,
The H active input terminal of the second AND circuit constitutes the other processed signal input path,
The H active output terminal of the first AND circuit and the L active input terminal of the second AND circuit are electrically connected to constitute one of the relay control signal output paths,
The H active output terminal of the second AND circuit and the L active input terminal of the first AND circuit are electrically connected to form the other relay control signal output path,
The operation unit includes an open switch and a close switch having an automatic return a contact,
The microcomputer is configured not to change the output state to the two processed signal input paths when the open switch and the close switch are operated simultaneously,
The non-contact logic circuit is configured to prevent the open relay and the closed relay from simultaneously closing, so that the relay control signal output circuit of the first AND circuit and the relay control signal of the second AND circuit A switchgear characterized by outputting a relay control signal from the output .

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