TWI545607B - Switch device and load control system - Google Patents

Description

Switching device and load control system

The present invention relates to a switching device and a load control system, and more particularly to a switching device for controlling a lighting load or the like, and a load control system using the same.

The predecessor provides a load control system that turns on/off the energization of the load by using a remote control relay (refer to, for example, Document 1 [Japanese Patent Publication No. 2002-110011 (refer to paragraph 0002-0007 and FIG. 34, FIG. 35)]

The conventional example described in Document 1 is constituted by a latch type remote control relay, a remote control transformer, and a switching device. The remote control relay has a main contact, an auxiliary contact that is interlocked with the main contact, and a relay coil. The main contact, inserted into the path from the commercial power supply to the load (such as the lighting load). The relay coil is powered from the remote transformer by means of an auxiliary contact. That is, the relay coil switches the energization direction in response to the state of the auxiliary contact.

The remote control transformer generates electric power (AC power) for driving the relay coil. The switch device has an operation unit that can be manually operated, and is configured to cause an excitation current to flow through the relay coil in response to the operation of the operation unit.

Further, the switching device has a first LED that lights when the lighting load is lit, and a second LED that lights when the lighting load is turned off. These two LEDs are configured to be lit by a current supplied from a remote control transformer through a relay coil and an auxiliary contact. That is, the two LEDs of the switching device respectively display the state (ON and OFF) of the main contacts of the remote control relay.

However, in the conventional example described in Document 1, the current continues to flow through the relay coil of the remote control relay when the remote control relay is switched from ON to OFF and from OFF to ON. Therefore, there is a problem that power consumption of the relay coil is increased.

In view of the above problems, an object of the present invention is to provide a switching device and a load control system that pursue lower power consumption than conventional examples.

The switch device of the present invention controls a remote control relay for opening and closing a supply circuit for supplying power from a power source to a load, and includes: a power supply unit that supplies driving power to the remote control relay; an operation unit that accepts an operation input; and a control unit and the operation unit Controlling the input of the operation and controlling the supply of the electric power by the power supply unit; the control unit is configured to control the power supply unit to switch to the closed state of the remote control relay from the open state The time and the time during which the remote control relay is switched from the closed state to the open state are not supplied in a short time, and the power is not supplied except when the state of the remote control is switched.

The load control system of the present invention includes: a remote control relay that opens and closes a supply circuit that supplies power from the power source; and the switching device controls the remote control relay.

Hereinafter, a switch device according to an embodiment of the present invention and a load control system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the lighting load is exemplified as the load, but the type of the load is not limited to the lighting load.

As shown in FIG. 6, the load control system of the present embodiment includes a switching device 1 and three remote control relays 2 (2A, 2B, and 2C). However, in the following description, the symbols "2A", "2B", and "2C" are given when three remote control relays are distinguished, and the symbol "2" is given when three remote control relays are not distinguished. Similarly, the symbols "4A", "4B", and "4C" are given when three lighting loads are distinguished, and the sign of "4" is given when three lighting loads are not distinguished.

The remote control relay 2 is a conventional device, which is a main contact 20, a relay coil 21, an auxiliary contact 22, diodes 23 and 24, and a pair of signal terminals (a first signal terminal 251, a second signal terminal 252), and the like. Composition. The main contact 20 is inserted into a supply circuit that supplies power to the lighting load 4 from the power source (AC power source 3). One end of the relay coil 21 is connected to a common terminal of the auxiliary contact 22. Further, the other end of the relay coil 21 is connected to the first signal terminal 251.

The switching terminal of one of the auxiliary contacts 22 is connected to the anode of the diode 23, and the other switching terminal of the auxiliary contact 22 is connected to the cathode of the diode 24. The auxiliary contact 22 is configured to be interlocked with the main contact 20. For example, when the main contact 20 is in an open state (refer to FIG. 6), the common terminal is connected to the switching terminal on the side of the diode 23, and at the main contact 20 When it is in the closed state, its common terminal is connected to the switching terminal on the side of the diode 24 . Further, the cathode of the diode 23 and the anode of the diode 24 are connected to the second signal terminal 252. Further, although not shown in the drawings, a series circuit (differential circuit) of a capacitor and a resistor is inserted between the anode and the cathode of one of the diodes 23.

When a DC voltage is applied between the signal terminals (that is, a DC is applied between the first signal terminal 251 and the second signal terminal 252 so that the first signal terminal 251 becomes higher than the second signal terminal 252. Voltage), the excitation current flows through the path of the first signal terminal 251 → the relay coil 21 → the auxiliary contact 22 → the diode 23 → the second signal terminal 252, so the main contact 20 is switched from the open state to the closed state (also That is, the main contact 20 is ON). When the main contact 20 is turned ON, the auxiliary contact 22 (that is, the common terminal of the auxiliary contact 22) is switched to the side of the diode 24 in conjunction with the main contact 20, so that the exciting current cannot flow to the relay coil 21. . However, the remote control relay 2 is a latch type relay having a permanent magnet, so that the main contact 20 is maintained in a closed state after the excitation current is stopped.

Further, when a DC voltage of a reverse polarity is applied between the signal terminals (that is, between the first signal terminal 251 and the second signal terminal 252, the second signal terminal 252 becomes higher than the first signal terminal 251. When the DC voltage is applied in the (reverse polarity) mode, the excitation current flows through the path of the second signal terminal 252 → the diode 24 → the auxiliary contact 22 → the relay coil 21 → the first signal terminal 251, so the main contact 20 The closed state is switched to the open state (that is, the main contact 20 is turned OFF). When the main contact 20 is turned off, the auxiliary contact 22 is switched to the side of the diode 23 in conjunction with the main contact 20, so that the exciting current does not flow through the relay coil 21. However, the main contact 20 remains in the open state after the excitation current is stopped.

When the remote control relay 2 (the main contact 20) is turned on, AC power is supplied from the AC power supply 3 to the illumination load 4 via the remote control relay 2, and the illumination load 4 is turned ON (lighting). When the remote control relay 2 (the main contact 20) is turned off, the AC power is not supplied from the AC power source 3 to the illumination load 4 via the remote control relay 2, and the illumination load 4 is turned off (turned off). However, in the load control system of the present embodiment, the switches 5A, 5B, and 5C different from the remote control relays 2A, 2B, and 2C are respectively inserted into the respective supply circuits for supplying power to the illumination loads 4A, 4B, and 4C from the AC power supply 3. The switches 5A, 5B, and 5C are, for example, wall-mounted switches that are embedded in the wall surface, and are configured to open and close the contacts each time the operation handle is operated. That is, when the remote control relay 2 is in the ON state, the respective lighting loads 4A, 4B, and 4C are individually turned on/off by operating the switches 5A, 5B, and 5C. Further, when the contacts of the switches 5A, 5B, and 5C are turned off, the lighting load 4 is turned on/off in response to the ON/OFF of the remote control relay 2.

Next, the switch device 1 of the present embodiment will be described.

As shown in FIG. 1, the switch device 1 of the present embodiment includes a control unit 10, an operation unit 11, a power supply unit 12, a power supply unit 15, a constant voltage circuit 16, and a display unit 17.

The control unit 10 is constituted by, for example, a microcontroller (for example, PIC16F1503 manufactured by Microchip Technology Inc.) and a program executed by a microcontroller.

The power supply unit 15 is configured to convert AC power (for example, AC power having an actual value of 100 to 120 volts) supplied from the AC power supply 3 into DC power (for example, DC power of 24 volts). These power supply units 15 are realized, for example, by a conventional insulated switching power supply circuit.

The constant voltage circuit 16 is configured to step down and stabilize the output voltage (24 volt DC voltage) of the power supply unit 15 to a low voltage (for example, 5 volts) DC voltage. These constant voltage circuits 16 are implemented, for example, by conventional buck chopper circuits and 3-terminal regulators. In the following description, the output voltage of the constant voltage circuit 16 is referred to as a control voltage. The control voltage is input to the power supply terminal of the control unit 10.

The operation unit 11 is composed of a momentary push button switch, and applies a control voltage to both ends, and one end on the high potential side is connected to one of the input ports of the control unit 10. In other words, the input port of the control unit 10 becomes a high level (control voltage) when the operation unit 11 is not operated, and becomes a low level when the operation unit 11 is operated. Therefore, the control unit 10 receives the operation signal from the operation unit 11 by the input 埠 being at a low level.

The display unit 17 has, for example, a red-emitting diode (red LED) having a red color and a green-emitting diode (green LED) having a green color. The red LED has its cathode connected to one of the output ports of the control unit 10, and a control voltage is applied to the anode. Further, the green LED has its cathode connected to the other output 埠 of the control unit 10, and a control voltage is applied to the anode. That is, the red LED and the green LED of the display unit 17 are individually turned on/off (lighting/turning off) by the control unit 10.

The power supply unit 12 is configured by a polarity switching unit 13 and a trigger unit 14. As shown in FIG. 2, the polarity switching unit 13 is configured by an H-bridge drive IC (for example, BD6231 manufactured by ROHM Corporation). This H-bridge driver IC has an H-bridge circuit 130 composed of four electric field effect transistors and a controller 131 that controls the H-bridge circuit 130. The output voltage of the power supply unit 15 (a DC voltage of 24 volts) is input to the H-bridge circuit 130. Among the two output terminals (the first output terminal 132 and the second output terminal 133) of the H-bridge circuit 130 (polarity switching unit 13), the first output terminal 132 and the first signal terminal 251 on the side of the relay coil 21 of the remote control relay 2 The second output terminal 133 is connected to the trigger unit 14 in phase connection. The controller 131 is configured to drive the H-bridge circuit 130 in response to a control signal output from the two output ports (the first output port 134 and the second output port 135) of the control unit 10. In other words, the controller 131 outputs a control signal from the first output port 134 of the control unit 10 so that the second output terminal 133 connected to the trigger unit 14 has a high potential (direction), and the power supply unit 15 is applied. The output voltage drives the H-bridge circuit 130. Further, the controller 131 outputs a control signal from the second output port 135 of the control unit 10 so that the first output terminal 132 connected to the remote control relay 2 has a high potential (direction), and the power supply unit 15 is applied. The H bridge circuit 130 is driven by the output voltage.

As shown in FIG. 2, the trigger unit 14 is composed of a plurality of (three in the illustrated example) optical bidirectional rectifying couplers 14A, 14B, and 14C. The optical bidirectional rectifying couplers 14A, 14B, and 14C have a light emitting element (LED) 140 and an optical bidirectional rectifier 141. A control voltage (DC5V) is applied to the positive electrode (anode) of the light-emitting element 140, and the negative electrode (cathode) of the light-emitting element 140 is connected to each of three different output ports of the control unit 10. That is, each of the optical bidirectional rectifying couplers 14A, 14B, and 14C causes the light emitting element 140 to emit light when the output turns of the control unit 10 are at a low level, and triggers the optical bidirectional rectifier 141 to turn ON. When the optical bidirectional rectifier 141 is turned on, the current flows through the optical bidirectional rectifier 141, and the conduction state of the optical bidirectional rectifier 141 is maintained regardless of the level of the output 埠 of the control unit 10. When the optical bidirectional rectifier 141 is turned on, the excitation current can be supplied from the power supply unit 15 to the remote control relay 2 with the polarity (direction) switched by the polarity switching unit 13.

Next, the appearance and configuration of the switch device 1 will be described with reference to FIGS. 3 and 4.

The switch device 1 of the present embodiment is fitted with a construction material (for example, a wall surface) in a state of being attached to the mounting frame 200.

The mounting frame 200 is, for example, a special mounting frame for a wide handle-shaped switch that is standardized according to Japanese industrial specifications. A rectangular window opening is opened in the center of the mounting frame 200, and the body 100 of the switch device 1 is embedded in the window. In the side walls located on the left and right sides of the window hole, three sets of the fitting holes 201 of one set are provided in each of the three groups along the longitudinal direction. In addition, mounting pieces 202 are respectively disposed on the upper and lower sides of the window opening. In each of the mounting pieces 202, a long hole 203 through which the box screw is inserted is provided in the center, and a circular screw through hole 204 is provided in each of the right and left sides of the long hole 203. These mounting frames 200 are conventional devices that are fixed to a switch box that is embedded in a wall by a box screw, or are fixed to a wall panel (gypsum board, etc.) using a snap fastener.

The switch device 1 is composed of a main body 100 made of a synthetic resin molded body having a rectangular box shape, and an operation handle 110 swingably attached to a front surface of the main body 100. In the main body 100, a plurality of printed wiring boards, a plurality of quick junction terminals (no screw terminals), and the like are housed. Circuit components (microcontrollers, H-bridge driver ICs, etc.) constituting the control unit 10, the operation unit 11, and the power supply unit 12 shown in FIGS. 1 and 2 are attached to the printed wiring boards. Further, a display portion 17 (a red LED and a green LED) is mounted on the left end portion of the frontmost printed wiring board. Further, an operation unit 11 (button switch) is attached to the center of the frontmost printed wiring board.

The rectangular window 101 penetrates a portion of the front wall of the body 100 that faces the display portion 17. That is, the red and green light emitted from the display unit 17 is irradiated to the front of the body 100 through the window 101.

Further, a T-shaped operation piece 102 is provided in a flexible manner on a portion of the front wall of the body 100 facing the operation portion 11. In other words, when the operation piece 102 is bent rearward, the operation unit 11 (button switch) attached to the frontmost printed wiring board is turned on by the operation piece 102.

Further, a pair of shaft portions 103 are arranged side by side in the vertical direction at the end portion on the left side of the front wall of the body 100. The shaft portions 103 are formed in a cylindrical shape at the front end portion, and the bearing portion of the operating handle 110 is rotatably mounted.

Further, the claw portions 104 fitted to the fitting holes 201 of the mounting frame 200 are provided on the left and right side surfaces of the main body 100 so as to be arranged at intervals in the vertical direction.

The operation handle 110, as shown in Fig. 3, is formed of a synthetic resin material into a longitudinally long rectangular plate shape. The bearing portion is provided at the center of the left end of the rear surface of the operating handle 110. By attaching the bearing portion to the shaft portion 103, the operation handle 110 can be used to swing the body 100 with the shaft portion 103 as a fulcrum. In other words, when the operation handle 110 is pressed from the front, the shaft portion 103 is pivoted rearward, and the operation piece 102 of the main body 100 is bent rearward to turn the operation portion 11 ON.

Further, at the center of the left end of the operation handle 110, a rectangular window 111 is provided. Further, the window portion 111 is fitted with a lid portion 112 formed of a translucent synthetic resin material (for example, an acrylic resin or the like). That is, the light emitted from the display unit 17 passes through the window 101 of the main body 100, and is irradiated forward by operating the window hole 111 of the handle 110 and the lid portion 112.

Next, the operation of the switching device 1 of the present embodiment will be described with reference to the timing chart of Fig. 5 and Figs. 1 and 2 . In addition, the horizontal axis in FIG. 5 represents time t, and the vertical axis represents voltage V. In addition, A in FIG. 5 shows the output voltage of the first output terminal 132 of the polarity switching unit 13, and B in FIG. 5 shows the output voltage of the second output terminal 133 of the polarity switching unit 13. C, D, and E in Fig. 5 respectively indicate input voltages of three optical bidirectional rectifying couplers 14A, 14B, and 14C (i.e., voltages input from the control unit 10); F, G, and H, respectively, for three remote controls. The signal voltage applied between the signal terminals of the relays 2A, 2B, and 2C (that is, between the first signal terminal 251 and the second signal terminal 252).

Here, all the switches 5 are turned on, and all of the remote control relays 2 are turned off. Therefore, in this state, all of the illumination load 4 is turned off. Further, in the switch device 1, the control unit 10 displays on the display unit 17 that all of the illumination loads 4 are turned off by lighting only the green LEDs.

When the operation handle 110 is pressed in the above state, the control unit 10 receives an operation signal from the operation unit 11. The control unit 10 that has received the operation signal controls the polarity switching unit 13 to switch the polarity of the first output terminal 132 to the positive electrode and the second output terminal 133 to the negative electrode (t=t0). Next, the control unit 10 applies a signal voltage (24 volt DC voltage) to the relay coil 21 side between the signal terminals of the remote control relay 2A by setting the input terminal of the optical bidirectional rectifying coupler 14A to a low level. . That is, the control unit 10 switches the voltage (refer to FIG. 5C) of the input optical bidirectional rectifying coupler 14A from a high level to a low level. Thereby, the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14A is turned ON. As a result, a signal voltage (24 volt DC voltage) is applied between the first signal terminal 251 and the second signal terminal 252 of the remote control relay 2A so that the first signal terminal 251 is at a high potential (refer to FIG. 5F). (t=t1).

In the remote control relay 2A, the excitation current flows through the relay coil 21 by applying the signal voltage, so the auxiliary contact 22 (i.e., the common terminal of the auxiliary contact 22) is switched to the second pole as the main contact 20 is turned ON. Body 24 side. When the remote control relay 2A (the main contact 20) is turned on, the AC power is supplied from the AC power supply 3 to the illumination load 4A via the remote control relay 2A, and the illumination load 4A is turned on. Further, when the auxiliary contact 22 of the remote control relay 2A (i.e., the common terminal of the auxiliary contact 22) is switched to the side of the diode 24, the exciting current becomes impossible to flow, so the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14A shut down. In this manner, the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14A is interlocked with the auxiliary contact 22 of the remote control relay 2A, and as a result, is interlocked with the main contact 20 of the remote control relay 2A. That is, the control unit 10 applies a pulse-like signal voltage to the remote control relay 2A (refer to Fig. 5F) (t = t1'). Therefore, the control unit 10 controls the power supply unit 12 to supply electric power in a short period of time that is shorter than the time when the remote control relay 2A is switched from the open state to the closed state.

When the remote control relay 2A is turned on, the control unit 10 applies a signal voltage positive to the relay coil 21 side between the signal terminals of the remote control relay 2B by setting the input terminal of the optical bidirectional rectifying coupler 14B to a low level ( 24 volt DC voltage). That is, after the remote control relay 2A is turned ON, the control unit 10 switches the voltage of the input optical bidirectional rectifying coupler 14B (refer to FIG. 5D) from the high level to the low level. Thereby, the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14B is turned ON. As a result, a signal voltage (24 volt DC voltage) is applied between the first signal terminal 251 and the second signal terminal 252 of the remote control relay 2B so that the first signal terminal 251 is at a high potential (refer to FIG. 5G). (t=t2).

In the remote control relay 2B, the excitation current flows through the relay coil 21 by applying the signal voltage, so the auxiliary contact 22 (that is, the common terminal of the auxiliary contact 22) is switched to the second pole as the main contact 20 is turned ON. Body 24 side. When the remote control relay 2B (the main contact 20) is turned on, the AC power is supplied from the AC power supply 3 to the illumination load 4B via the remote control relay 2B, and the illumination load 4B is turned on. When the auxiliary contact 22 of the remote control relay 2B (i.e., the common terminal of the auxiliary contact 22) is switched to the side of the diode 24, the exciting current becomes impossible to flow, so the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14B. shut down. In this manner, the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14B is interlocked with the auxiliary contact 22 of the remote control relay 2B, and as a result, is interlocked with the main contact 20 of the remote control relay 2B. In other words, the control unit 10 applies a pulse-like signal voltage (see Fig. 5G) to the remote control relay 2B in the same manner as the remote control relay 2A (t = t2'). Therefore, the control unit 10 controls the power supply unit 12 to supply electric power in a short period of time that is shorter than the time during which the remote control relay 2B is switched from the open state to the closed state.

When the remote control relay 2B is turned on, the control unit 10 applies a signal voltage to the relay terminal 21 side to the signal terminal of the remote control relay 2C by setting the input terminal of the optical bidirectional rectifying coupler 14C to a low level ( 24 volt DC voltage). That is, after the remote control relay 2B is turned on, the control unit 10 switches the voltage (refer to FIG. 5E) of the input optical bidirectional rectifying coupler 14C from a high level to a low level. Thereby, the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14C is turned ON. As a result, a signal voltage (24 volt DC voltage) is applied between the first signal terminal 251 and the second signal terminal 252 of the remote control relay 2C so that the first signal terminal 251 is at a high potential (refer to FIG. 5H). (t=t3).

In the remote control relay 2C, the excitation current flows through the relay coil 21 by applying the signal voltage, so the auxiliary contact 22 (i.e., the common terminal of the auxiliary contact 22) is switched to the second pole as the main contact 20 is turned ON. Body 24 side. When the remote control relay 2C (the main contact 20) is turned on, the AC power is supplied from the AC power supply 3 to the illumination load 4C via the remote control relay 2C, and the illumination load 4C is turned on. Further, when the auxiliary contact 22 of the remote control relay 2C (i.e., the common terminal of the auxiliary contact 22) is switched to the side of the diode 24, the exciting current becomes impossible to flow, so the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14C is turned off. . In this manner, the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14C is interlocked with the auxiliary contact 22 of the remote control relay 2C, and as a result, is interlocked with the main contact 20 of the remote control relay 2C. In other words, similarly to the remote control relays 2A and 2B, the control unit 10 applies a pulse-shaped signal voltage to the remote control relay 2C (refer to FIG. 5H). Therefore, the control unit 10 controls the power supply unit 12 to supply electric power in a short period of time that is shorter than the time during which the remote control relay 2C is switched from the open state to the closed state.

Further, after turning on all of the remote control relays 2, the control unit 10 controls the polarity switching unit 13 so that the first output terminal 132 and the second output terminal 133 have the same potential (t=t4). Further, the control unit 10 displays the case where all the illumination loads 4 are turned on on the display unit 17 by lighting only the red LEDs.

When the operation handle 110 is pressed in a state where all of the illumination loads 4 are turned on, the control unit 10 receives an operation signal from the operation unit 11. The control unit 10 that has received the operation signal controls the polarity switching unit 13 to switch the polarity of the second output terminal 133 to the positive electrode and the first output terminal 132 to the negative electrode (t=t5). Next, the control unit 10 applies a signal voltage (24 volt DC voltage) to the relay coil 21 side between the signal terminals of the remote control relay 2A by setting the input terminal of the optical bidirectional rectifying coupler 14A to a low level. . That is, the control unit 10 switches the voltage (refer to FIG. 5C) of the input optical bidirectional rectifying coupler 14A from a high level to a low level. Thereby, the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14A is turned ON. As a result, a signal voltage (24 volt DC voltage) is applied between the first signal terminal 251 and the second signal terminal 252 of the remote control relay 2A so that the second signal terminal 252 is at a high potential (refer to FIG. 5F). (t=t6).

In the remote control relay 2A, by applying the signal voltage, the exciting current in the opposite direction flows through the relay coil 21, so the auxiliary contact 22 (that is, the common terminal of the auxiliary contact 22) is switched as the main contact 20 is turned OFF. To the side of the diode 23 . When the remote control relay 2A (the main contact 20) is turned off, the AC power is not supplied from the AC power source 3 to the illumination load 4A, and the illumination load 4A is turned off. When the auxiliary contact 22 of the remote control relay 2A (i.e., the common terminal of the auxiliary contact 22) is switched to the side of the diode 23, the exciting current in the opposite direction becomes impossible to flow, so the light of the optical bidirectional rectifying coupler 14A The bidirectional rectifier 141 is turned off. In this manner, the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14A is interlocked with the auxiliary contact 22 of the remote control relay 2A, and as a result, is interlocked with the main contact 20 of the remote control relay 2A. That is, the control unit 10 applies a pulse-like signal voltage to the remote control relay 2A (refer to Fig. 5F) (t = t6'). Therefore, the control unit 10 controls the power supply unit 12 to supply electric power in a short period of time that is shorter than the time when the remote control relay 2A is switched from the closed state to the open state.

When the remote control relay 2A is turned off, the control unit 10 applies a signal voltage that causes the relay coil 21 side to be negative between the signal terminals of the remote control relay 2B by setting the input terminal of the optical bidirectional rectifying coupler 14B to a low level ( 24 volt DC voltage). That is, after the remote control relay 2A is turned off, the control unit 10 switches the voltage of the input optical bidirectional rectifying coupler 14B (refer to FIG. 5D) from the high level to the low level. Thereby, the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14B is turned ON. As a result, a signal voltage (24 volt DC voltage) is applied between the first signal terminal 251 and the second signal terminal 252 of the remote control relay 2B so that the second signal terminal 252 is at a high potential (refer to FIG. 5G). (t=t7).

In the remote control relay 2B, by applying the signal voltage, the exciting current in the opposite direction flows through the relay coil 21, so the auxiliary contact 22 (i.e., the common terminal of the auxiliary contact 22) is switched as the main contact 20 is turned OFF. To the side of the diode 23 . When the remote control relay 2B (the main contact 20) is turned off, the AC power is not supplied from the AC power source 3 to the illumination load 4B, and the illumination load 4B is turned off. Further, when the auxiliary contact 22 of the remote control relay 2B (i.e., the common terminal of the auxiliary contact 22) is switched to the side of the diode 23, the exciting current in the opposite direction becomes incapable of flowing, so that the optical bidirectional rectifying coupler 14B is bidirectional in light. The rectifier 141 is turned off. In this manner, the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14B is interlocked with the auxiliary contact 22 of the remote control relay 2B, and as a result, is interlocked with the main contact 20 of the remote control relay 2B. In other words, the control unit 10 applies a pulse-like signal voltage (see Fig. 5G) to the remote control relay 2B in the same manner as the remote control relay 2A (t = t7'). Therefore, the control unit 10 controls the power supply unit 12 to supply electric power in a short time that is shorter than the time when the remote control relay 2B is switched from the closed state to the open state.

When the remote control relay 2B is turned off, the control unit 10 applies a signal voltage that causes the relay coil 21 side to be negative between the signal terminals of the remote control relay 2C by setting the input terminal of the optical bidirectional rectifying coupler 14C to a low level ( 24 volt DC voltage). That is, the control unit 10 switches the voltage of the input optical bidirectional rectifying coupler 14C (refer to FIG. 5E) from a high level to a low level. Thereby, the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14C is turned ON. As a result, a signal voltage (24 volt DC voltage) is applied between the first signal terminal 251 and the second signal terminal 252 of the remote control relay 2C so that the second signal terminal 252 is at a high potential (refer to FIG. 5H). (t=t8).

In the remote control relay 2C, by applying the signal voltage, the exciting current in the opposite direction flows through the relay coil 21, so the auxiliary contact 22 (that is, the common terminal of the auxiliary contact 22) is switched as the main contact 20 is turned OFF. To the side of the diode 23 . When the remote control relay 2C (the main contact 20) is turned off, the AC power is not supplied from the AC power source 3 to the illumination load 4C, and the illumination load 4C is turned off. Further, when the auxiliary contact 22 of the remote control relay 2C (i.e., the common terminal of the auxiliary contact 22) is switched to the side of the diode 23, the exciting current in the opposite direction becomes impossible to flow, so that the optical bidirectional rectifying coupler 14C is bidirectional in light. The rectifier 141 is turned off. In this manner, the optical bidirectional rectifier 141 of the optical bidirectional rectifying coupler 14C is interlocked with the auxiliary contact 22 of the remote control relay 2C, and as a result, is interlocked with the main contact 20 of the remote control relay 2C. In other words, similarly to the remote control relays 2A and 2B, the control unit 10 applies a pulse-shaped signal voltage to the remote control relay 2C (refer to FIG. 5H). Therefore, the control unit 10 controls the power supply unit 12 to supply electric power in a short period of time that is shorter than the time when the remote control relay 2C is switched from the closed state to the open state.

Further, after turning off all of the remote control relays 2, the control unit 10 controls the polarity switching unit 13 so that the first output terminal 132 and the second output terminal 133 have the same potential (t=t9). Further, the control unit 10 displays on the display unit 17 that all of the illumination loads 4 are turned off by lighting only the green LEDs.

As described above, the switching device 1 of the present embodiment supplies the pulse coil-shaped exciting current to the relay coil 21 when the remote control relay 2 is turned ON/OFF, so that the power in the relay coil 21 can be pursued as compared with the conventional example. Reduced wear and tear.

The switch device 1 of the present embodiment controls a remote control relay 2 for supplying and supplying a circuit for supplying power from a power source (AC power source 3) to a load (lighting load 4). The switch device 1 of the present embodiment includes a power supply unit 12 that supplies driving power to the remote control relay 2, an operation unit 11 that accepts an operation input, and a control unit 10 that corresponds to the operation input accepted by the operation unit 11. The supply of the electric power by the power supply unit 12 is controlled. The control unit 10 is configured to control the power supply unit 12 so that the time during which the remote control relay 2 is switched from the open state to the closed state and the time when the remote control relay 2 is switched from the closed state to the open state are not shorter. This power is supplied for a short time. Further, the control unit 10 is configured to control the power supply unit 12 to supply the power other than when the state of the remote control relay 2 is switched.

Further, the load control system of the present embodiment includes a remote control relay 2 that opens and closes a supply circuit that supplies power from a power source (AC power source 3) to a load (lighting load 4), and a switching device 1 that controls the remote control relay 2.

The switch device 1 and the load control system according to the present embodiment are configured as described above, and the power supply unit 12 is controlled so as not to supply electric power to the remote control relay 2 except when the state of the remote control relay 2 is switched. Therefore, in the switch device 1 and the load control system of the present embodiment, it is possible to pursue a reduction in power consumption more than the conventional example.

In the switch device 1 of the present embodiment, the power supply unit 12 is configured to supply the electric power to the plurality of remote control relays 2A, 2B, and 2C, respectively. Further, in the switch device 1 of the present embodiment, the control unit 10 is configured to control the power supply unit 12 to supply the electric power to the plurality of remote control relays 2A, 2B, and 2C in sequence.

When the switching device 1 of the present embodiment is configured as described above, the power capacity required for the power supply unit 15 can be reduced as compared with the case where the plurality of remote control relays 2A, 2B, and 2C are simultaneously supplied with electric power. As a result, the power supply unit 15 in the switch device 1 of the present embodiment can be miniaturized. In other words, by reducing the power capacity required for the power supply unit 15, a wiring board having a small capacitance can be used for the wiring board on which the circuit components constituting the power supply unit 15 are mounted. Therefore, the size of the power supply unit 15 can be reduced.

As is apparent from the above-described embodiment, the switch device (1) according to the first aspect of the present invention controls the remote control relay (2) for supplying and supplying a circuit from the power source (AC power source 3) to the load (lighting load 4). The switch device (1) includes a power supply unit (12) that supplies driving power to the remote control relay (2), an operation unit (11) that accepts an operation input, and a control unit (10) and the operation unit (11) The input of the operation input is controlled to control the supply of the electric power by the power supply unit (12). The control unit (10) is configured to control the power supply unit (12) to self-close the remote control relay (2) in comparison with the time when the remote control relay (2) is switched from the open state to the closed state. The time when the state is switched to the open state is not supplied to the power for a short time. Further, the control unit (10) is configured to control the power supply unit (12) so that the power is not supplied except when the state of the remote control relay (2) is switched.

In the switch device (1) according to the second aspect of the present invention, in the first aspect, the power supply unit (12) is configured to supply the electric power to the plurality of remote control relays (2A, 2B, 2C). The control unit (10) is configured to control the power supply unit (12) to supply the power to the plurality of remote control relays (2A, 2B, 2C) in a sequential manner.

According to the second aspect, the power capacity required for the power supply unit (15) can be reduced as compared with the case where the plurality of remote control relays (2A, 2B, and 2C) are simultaneously supplied with electric power. As a result, the power supply unit (15) in the switch device (1) of the present embodiment can be miniaturized. In other words, by reducing the power capacity required for the power supply unit (15), a wiring board having a small capacitance can be used for the wiring board on which the circuit components constituting the power supply unit (15) are mounted, so that the power supply unit (15) can be pursued. Miniaturization.

In the switch device 1 according to the third aspect of the present invention, in the first or second aspect, the control unit (10) is configured to start the electric power by the power supply unit (12) in accordance with the operation input. supply. The power supply unit (12) is configured to end the supply of the power once the state of the remote control relay (2) is switched.

In a switch device (1) according to a fourth aspect of the present invention, in the third aspect, the power supply unit (12) includes a switch, and is provided in a circuit for supplying the power to the remote control relay (2). The remote control relay (2) includes a first signal terminal (251) and a second signal terminal (252), and a current direction between the first signal terminal (251) and the second signal terminal (252). The main contact (20) of the supply circuit is opened and closed. Further, the remote control relay (2) includes an auxiliary contact (22) connected between the first signal terminal (251) and the second signal terminal (252), and is interlocked with the main contact (20). The auxiliary contact (22) is configured to switch between the first signal terminal (251) and the second signal terminal (252) by switching the main contact (20). The switch is connected to one of the first signal terminal (251) and the second signal terminal (252). The control unit (10) is configured to start the supply of the electric power by the power supply unit (12) by turning the switch ON in response to the operation input. The switch is configured to be turned OFF when a current does not flow between the first signal terminal (251) and the second signal terminal (252).

A switch device (1) according to a fifth aspect of the present invention is the open circuit bidirectional rectifier according to the fourth aspect.

A switch device (1) according to a sixth aspect of the present invention is the open-circuit optical bidirectional rectifier (141) according to the fifth aspect.

Further, the load control system according to the seventh aspect of the present invention includes: a remote control relay (2), a supply circuit for opening and closing a power supply (the alternating current power supply 3) to supply a load (lighting load 4); and any of the first to sixth embodiments A switching device (1) of the form controls the remote control relay (2).

Since the switching device (1) and the load control system are configured as described above, the switching device (1) and the load control system can pursue lower power consumption than the conventional example.

1‧‧‧Switching device
10‧‧‧Control Department
100‧‧‧ body
101‧‧‧ window hole
102‧‧‧Operating film
103‧‧‧Axis
104‧‧‧ claws
11‧‧‧Operation Department
110‧‧‧Operation handle
111‧‧‧ window hole
112‧‧‧ Cover
12‧‧‧Power Supply Department
13‧‧‧Polarity switching department
130‧‧‧H bridge circuit
131‧‧‧ Controller
132, 133‧‧‧ output terminals
134‧‧‧1st output埠
135‧‧‧2nd output埠
14‧‧‧Trigger
14A, 14B, 14C‧‧‧ optical bidirectional rectifier coupler
140‧‧‧Lighting elements
141‧‧‧Light bidirectional rectifier
15‧‧‧Power Department
16‧‧‧ Constant voltage circuit
17‧‧‧Display Department
2, 2A, 2B, 2C‧‧‧ remote control relay
20‧‧‧Main contacts
200‧‧‧Installation box
201‧‧‧ fitting holes
202‧‧‧Installation
203‧‧‧ long hole
204‧‧‧screw through hole
21‧‧‧Relay coil
22‧‧‧Auxiliary contacts
23, 24‧‧‧ diode
251‧‧‧1st signal terminal
252‧‧‧2nd signal terminal
3‧‧‧AC power supply
4, 4A, 4B, 4C‧‧‧ lighting load
5, 5A, 5B, 5C‧‧‧ switch
A‧‧‧ Output voltage of the first output terminal 132 of the polarity switching unit 13
B‧‧‧ Output voltage of the second output terminal 133 of the polarity switching unit 13
C‧‧‧Input voltage of optical bidirectional rectifier coupler 14A
D‧‧‧Input voltage of optical bidirectional rectifier coupler 14B
E‧‧‧Input voltage of optical bidirectional rectifier coupler 14C
F‧‧‧ Signal voltage applied between the signal terminals of the remote control relay 2A
G‧‧‧ Signal voltage applied between the signal terminals of the remote control relay 2B
H‧‧‧ Signal voltage applied between the signal terminals of the remote control relay 2C

Fig. 1 is a block diagram showing a switching device of the embodiment. Fig. 2 is a circuit configuration diagram of a power supply unit in the embodiment. Fig. 3 is a perspective view showing the appearance of the embodiment. Fig. 4 is an external perspective view showing a state in which the operating handle is removed in the embodiment. Fig. 5 is a timing chart for explaining the operation of the embodiment. Fig. 6 is a system configuration diagram showing a load control system of the embodiment.

A‧‧‧ Output voltage of the first output terminal 132 of the polarity switching unit 13

B‧‧‧ Output voltage of the second output terminal 133 of the polarity switching unit 13

C‧‧‧Input voltage of optical bidirectional rectifier coupler 14A

D‧‧‧Input voltage of optical bidirectional rectifier coupler 14B

E‧‧‧Input voltage of optical bidirectional rectifier coupler 14C

F‧‧‧ Signal voltage applied between the signal terminals of the remote control relay 2A

G‧‧‧ Signal voltage applied between the signal terminals of the remote control relay 2B

H‧‧‧ Signal voltage applied between the signal terminals of the remote control relay 2C

Claims (6)

A switching device for controlling a remote control relay for supplying and supplying a circuit for supplying power from a power source to a load, comprising: a power supply unit that supplies driving power to the remote control relay; an operation unit that accepts an operation input; and a control unit The operation input is received by the operation unit, and the supply of the electric power by the power supply unit is controlled. The control unit is configured to control the power supply unit to switch from the open state to the closed circuit. The power is supplied for a short period of time or longer than the time when the remote control relay is switched from the closed state to the open state, and the power is not supplied except when the state of the remote control relay is switched; the power supply unit is provided with a switch a circuit for supplying the power to the remote control relay; the remote control relay includes: a first signal terminal and a second signal terminal; and a main contact is disposed between the first signal terminal and the second signal terminal Opening and closing the supply circuit in the direction of current; an auxiliary contact is connected between the first signal terminal and the second signal terminal, and the main And the two diodes are electrically connected between the first signal terminal and the second signal terminal by the auxiliary contact; the two diodes are opposite to each other in polarity The method is electrically connected between the first signal terminal and the second signal terminal. The auxiliary contact is configured to switch the diode connected between the first signal terminal and the second signal terminal in the two diodes by switching the main contact; the switch, Connected to one of the first signal terminal and the second signal terminal, and electrically connected in series to any one of the two diodes and the auxiliary contact; the control unit is configured to correspond to the operation input The power supply is started by turning the switch ON, and the switch is configured to switch OFF when the current does not flow between the first signal terminal and the second signal terminal. The switch device according to claim 1, wherein the power supply unit is configured to supply the electric power to the plurality of remote control relays separately; the control unit is configured to control the power supply unit to control the plurality of remote control relays. The power is supplied separately and sequentially. The switch device according to claim 1 or 2, wherein the control unit is configured to start supply of the electric power by the power supply unit in response to the operation input; and the power supply unit is configured to switch the remote control The state of the relay ends the supply of this power. The switching device of claim 1 or 2, wherein the switching relationship is a bidirectional rectifier. Such as the switching device of claim 4, wherein The open relational light bidirectional rectifier. A load control system, comprising: a remote control relay, a circuit for opening and closing a power supply from a power source; and a switch device according to any one of claims 1 to 5, wherein the remote control relay is controlled.