JPS6211169Y2 - - Google Patents

Description

[Detailed Description of the Invention] The invention relates to a remote control switch device that can operate a power load switching device at a low voltage using signal communication wiring and display the operation results.

A so-called keep relay is used as a device to open and close a power load using signal communication wiring, and is operated by passing an instantaneous current through an electromagnetic coil, and is mechanically held in the open or closed position each time. ing. It is convenient to use this keep relay to form a load end for controlling the opening and closing of the load as shown in FIG. 1, and to operate and display this with an operating end having a display circuit. In FIG. 1, the load end 1 is a single-phase full-wave rectifier circuit consisting of four diodes 2, 3, 4, and 5, with one of the AC terminals open as a first terminal 6 and a second terminal 7. , an electromagnetic coil 9 connected to the DC terminal of the rectifier circuit to operate the keep relay and open/close the main switch 8, and a capacitor 10 connected in parallel to the electromagnetic coil 9.
An auxiliary switching device 11 that is linked to the main switch 8 and connects a switching contact to one of the opened first terminal 6 and second terminal 7 of the rectifier circuit as switching contacts. , a power terminal 12 led out from the switching contact side of the auxiliary switching device 11, and an operation terminal 13 led out from the other AC side terminal of the rectifier circuit.
It is equipped with Further, the operation end 19 has a power terminal 20 and an operation terminal 21, and between the power supply terminal 20 and the operation terminal 21,
A normally open push button switch 16 and a circuit in which a directional closing indicator light 17 and an open circuit indicator light 18, such as light emitting diodes, are connected in antiparallel, are connected and inserted in parallel. A plurality of operating ends 19 can be provided, and each power terminal 20 is connected to the power terminal 12 of the load end 1 via the control power transformer 14.
The respective operating terminals 21 are commonly connected to an operating line 15' connected to the operating terminal 13 of the load end 1.
In the above description, both the power supply line 15 and the operation line 15' are so-called signal communication wiring.

In the circuit shown in FIG. 1, the switching contact of the auxiliary switching device 11 is in contact with the first terminal 6 side as shown by the solid line, so when the push button switch 16 is closed, the current from the power transformer 14 is transferred to the transformer. The current flows in the direction of the switch 14 - the auxiliary switch 11 - the diode 2 - the electromagnetic coil 9 - the diode 4 - the push button switch 16 (in the direction of the solid line arrow), and excites the electromagnetic coil 9. Therefore, the keep relay operates and closes the main switch 8. At the same time, the switching contact of the auxiliary switching device 11 is switched to the second terminal 7 side as shown by the dotted line,
The current in the direction of the solid arrow is cut off, and a new transformer 14
Current flows in the direction of - push button switch 16 - diode 3 - electromagnetic coil 9 - diode 5 - auxiliary switch 11 (in the direction of the dotted arrow). At this time, the capacitor 10 smoothes the pulsating current with a half-wave waveform rectified by the diode, and the charge charged in the capacitor 10 flows into the electromagnetic coil 9.
The current in the electromagnetic coil 9 continues in the same direction. Therefore, while the current in the direction of the solid arrow is switched to the current in the direction of the dotted arrow, the current in the electromagnetic coil 9 continues to flow, and the keep relay is maintained in that state. If the push button switch 16 is opened here, the current in the direction of the dotted arrow will flow to the input indicator light 17.
lights up to indicate that the main switch 8 has been turned on. Since the impedance of the indicator light 17 is much higher than that of the electromagnetic coil 9, when there are only a few indicator lights, this current is small and does not affect the operation of the keep relay. Even if this state continues, the electromagnetic coil 9
There is no risk of overheating. Next, when the push button switch 16 is closed again, the switching contact of the auxiliary switching device 11 is in contact with the second terminal 7 side as shown by the dotted line, so the current from the power transformer 14 is transferred to the transformer 14- Push button switch 16-diode 3-
It flows in the direction of the electromagnetic coil 9 - diode 5 - auxiliary switching device 11 (in the direction of the dotted arrow), and excites the electromagnetic coil 9. Therefore, the keep relay operates and opens the main switch 8. At this time, the auxiliary switch 11
Since the switching contact is switched to the first terminal 6 side as shown by the solid line, the current in the direction of the dotted arrow is cut off, and the current in the direction of the solid arrow flows. At this time, the current in the electromagnetic coil 9 is continued due to the charge accumulated in the capacitor 10 as described above. Therefore, the keep relay does not perform unnecessary operations. When the push button switch 16 is opened, a current flows in the direction of the solid arrow to the open circuit indicator light 18, which lights up to indicate that the main switch 8 has been opened. In this case as well, the impedance of the indicator light 17 is much higher than that of the electromagnetic coil 9, so when the number of indicator lights 18 is small, this current is small and does not affect the operation of the keep relay. Furthermore, there is no risk that the electromagnetic coil 9 will overheat.

This remote control switch device can be operated from various locations via several operation display circuits disposed remotely via signal communication wiring, and the results can be displayed. However, as already mentioned, current flows through the indicator lamps, so even if the value is small, this cannot be ignored if the number of indicator lamps increases. For example, even if light emitting diodes with very low power consumption are used, the number of turn-on indicator lights and open-circuit indicator lights is limited to eight each. If this value is exceeded, a current sufficient to operate the keep relay will constantly flow in the electromagnetic coil, resulting in a drawback that the operation of the keep relay will be hindered. There is also a risk that the electromagnetic coil itself may overheat.

The present invention aims to eliminate the above-mentioned drawbacks and provide a remote control switch device that can use more indicator lights.

The purpose of this device is to remotely control a load end for controlling the opening and closing of a load from a plurality of operating terminals via a common AC power source, and to display the open/closed state of the load terminal at each operating terminal; The end is a single-phase full-wave rectifier circuit with one of the AC terminals open,
An electromagnetic coil connected to the DC terminal of the rectifier circuit and opened/closed by a load keeping operation, a capacitor connected in parallel to the electromagnetic coil, and a capacitor operated in conjunction with the opening/closing control of the electromagnetic coil to cover the open AC terminal. an auxiliary switch to which a switching contact is connected as a switching contact; a power supply terminal derived from the switching contact; an operating terminal derived from the other alternating current terminal of the rectifier circuit; a display terminal led out from a DC terminal; the operating end includes a power terminal, an operating terminal,
An open circuit display terminal, a closing display terminal,
A regular push button switch connected between the power supply terminal and the operation terminal, an open circuit indicator light in which two series resistors are connected in series and inserted between the power supply terminal and the open circuit display terminal, and the two series resistors. a power supply terminal connected between the connection point of the power supply terminal and a power supply terminal; the power supply terminal of each operating end is commonly connected to a power line connected to the power supply terminal of the load end via an AC power supply; The operating terminals of each operating end are commonly connected to an operating line connected to the operating terminal of the load end; the open circuit indicator terminals of each operating end are commonly connected to an open circuit indicator line that is directly connected to the power supply terminal of the load end. ; This is achieved by making the closing display terminals of each operating end commonly connected to the closing indicating line connected to the display terminal of the load end.

Next, the present invention will be explained in detail based on connection diagrams according to embodiments. In FIG. 2, the load end 1 is connected to the first
Similar to the one shown in the figure, four diodes 2,
A single-phase full-wave rectifier circuit consisting of AC terminals 3, 4, and 5 is opened as a first terminal 6 and a second terminal 7, and is connected to a DC terminal of this rectifier circuit to operate a keep relay. An electromagnetic coil 9 that opens and closes the main switch 8, a capacitor 10 connected in parallel to the electromagnetic coil 9, and a first terminal 6 and a second terminal 7 connected to the main switch 8 to open the rectifier circuit. and an auxiliary switching device 11 that connects the switching contact to either of the switching contacts, and the auxiliary switching device 11
A power terminal 12 led out from the switching contact of the switch, and an operating terminal 1 led out from the other AC terminal of the rectifier circuit.
3, and a display terminal 22 led out from one DC terminal of the rectifier circuit. Also, the operating end 19
is the power terminal 20 and the operation terminal 21.
, the open circuit display terminal 23 , the closing display terminal 24 , the normally open push button switch 16 connected between the power supply terminal 20 and the operation terminal 21 , and the normally open push button switch 16 inserted between the power supply terminal 20 and the open circuit display terminal 23 . two series resistors 2
5 and 26 connected in series, and a closing indicator light 17 connected between the connecting point of the two series resistors 25 and 26 and the closing indicating terminal 24. A plurality of operating ends 19 can be provided, and the power terminal 20 of each operating end 19 is connected to the power terminal 1 of the load end 1 via the control power transformer 14.
2, and each operation terminal 21 is commonly connected to the electric wire 15 connected to the load end 1.
It is commonly connected to an operating line 15' which is connected to the operating line 15'. Furthermore, the open circuit display terminal 23 is connected to the load end 1
Open circuit indicator line 1 directly connected to power supply terminal 12 of
5" and is commonly connected to input display terminal 24.
are commonly connected to the input display line 15 connected to the display terminal 22 of the load end 1. In the above explanation, power line 15, operation line 15', open circuit indicator line 1
5'' and the input display line 15 are both so-called signal communication wiring.

In the wiring diagram of Figure 2, transformer 14 - resistor 2
In the circuit of 5-resistor 26-open circuit indicator light 18, current always flows from the power transformer 14 in the direction shown by the line.
When the main switch 8 is open, this current lights up the open circuit indicator light 18 to indicate that the main switch 8 is open. Of course, this current does not flow through the electromagnetic coil 9. Next, when the load end 1 is operated and the main switch 8 is closed, the auxiliary switch 11 is switched to the second switch.
The current is switched to the terminal 7 side as shown by the dotted line from the power transformer 14 to the circuit of transformer 14 - resistor 25 - closing indicator 17 - diode 5 - auxiliary switch 11 in the direction of the solid line arrow, and the current is turned on. The indicator light 17 lights up to indicate that the main switch 8 has been turned on. When current flows through the input indicator light 17, the resistor 26
and the open circuit indicator light 18 are short-circuited by the closing indicator light 17 and the diode 5 of the rectifier circuit,
The current of the open circuit indicator light 18 suddenly decreases, and the open circuit indicator light 18
goes out. Of course, the current of the input indicator light 17 does not flow through the electromagnetic coil 9.

As mentioned above, the current in the display circuit does not flow through the electromagnetic coil, so the operation display circuit of this switch device cannot operate the keep relay even if a large number of close indicator lights and open indicator lights are connected in parallel. There is no risk of interfering or overheating the electromagnetic coil. The number of closing lights and open lights are both determined by the capacity of the power transformer.

As already mentioned, the load end 1 of the remote control switch device according to the present invention is exactly the same as the conventional circuit shown in FIG. 1, and the operation operated by the push button switch is also exactly the same as described above. omitted from

As described in the embodiments above, the present invention uses a keep relay in the main switch to configure the load end, and a remote operation end via signal communication wiring.
This is a device that operates this and displays the result using an indicator light.The open circuit indicator light at the operating end is always energized, and only the closing indicator light is lit using an auxiliary switch linked to the main switch. At this time, the connection is made so that the current of the open circuit indicator light is reduced. With this circuit configuration, only the push button switch current flows through the electromagnetic coil at the load end.
Since no current flows through the indicator lights, it is an excellent device that allows the number of indicator lights to be increased until the current value matches the capacity of the power transformer.

[Brief explanation of the drawing]

FIG. 1 is a wiring diagram showing an example of a conventional remote control switch device, and FIG. 2 is a wiring diagram showing an embodiment of the remote control switch device according to the present invention. 1... Load end, 2, 3, 4, 5... Diode forming a full-wave rectifier circuit, 9... Electromagnetic coil of keep relay, 10... Capacitor, 11... Auxiliary switch, 12... Power terminal , 13...operation terminal,
14...AC power transformer, 15...Power line, 1
5'...Operating line, 15''...Open circuit display line, 15...
... Closing indicator line, 16... Normally open push button switch, 17... Closing indicator light, 18... Open circuit indicator light,
19...Operation end, 20...Power terminal, 21
...Operation terminal, 22...Operation terminal, 23...
...Open circuit display terminal, 24...Closing display terminal, 25, 26...Two series resistors.

Claims (1)

[Scope of utility model registration request] A device that remotely controls a load end for controlling opening/closing of a load from a plurality of operation ends via a common AC power source, and displays the opening/closing state of the load end at each operation end; is a single-phase full-wave rectifier circuit with one of the AC terminals open, an electromagnetic coil connected to the DC terminal of the rectifier circuit and opened and closed by a load keeping operation, and a capacitor connected in parallel to the electromagnetic coil. an auxiliary switching device that operates in conjunction with the opening/closing control of the electromagnetic coil and connects a switching contact to one of the opened AC terminals as a switched contact; a power terminal led out from the switching contact; and a rectifier circuit. An operation terminal led out from the other AC terminal, and an indicator terminal led out from one DC terminal of the rectifier circuit; a normally open switch connected between a terminal, a power supply terminal and an operation terminal; an open circuit indicator light connected in series with two resistors between the power supply terminal and an open circuit display terminal; and the two series resistors. a power supply terminal connected between the interconnection point of the terminal and a power supply terminal; the power supply terminal of each operating end is commonly connected to a power line connected to the power supply terminal of the load end via an AC power supply; , the operating terminals of each operating end are commonly connected to the operating line connected to the operating terminal of the load end, and the open circuit indicating terminals of each operating end are commonly connected to the open circuit indicating line directly connected to the power supply terminal of the load end. A remote control switch device characterized in that the closing display terminals of each operating end are commonly connected to a closing display line connected to the display terminal of the load end.