JPS637413B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch with energization display and operation display functions that display the operating state of the switch and the state of energization to a load.

Some conventional switches had a energization display function, but none had a energization display function. Therefore, when the switch is operating correctly but the display shows that the power is not being supplied, it is inconvenient that it is difficult to tell whether there is a load failure or a power outage.

The present invention was made in view of these points,
The purpose of this is to enable the operating status of the switch contact to be confirmed by the lit or off display, and to also confirm the energization status of the load by the lit display.
To provide a switch with energization display and operation display functions that can easily determine load failures, etc.

The present invention will be explained below with reference to Examples. FIG. 1 shows a circuit of one embodiment, and FIG. 2 shows a sectional view of its mechanism. In the figure, reference numeral 1 denotes a switch body, and on the inner bottom surface of the switch body 1, a fixed contact plate 2 having a substantially inverted shape is erected. A conductive plate 3 projecting in an F-shape is provided. A movable contact plate 4 having a substantially U-shaped cross section and an upward opening is placed on the tip projection 3a of the conductive plate 3 so as to be swingable from side to side. This movable contact plate 4 is the switch body 1
Central window hole 5a of cover 5 attached to top opening
The lower end of a coil spring 7, the upper end of which is inserted into a recess 6a on the lower surface of the operating body 6, which is pivotally attached to the operating body so as to be swingable from side to side, is inserted to receive the elastic force of the coil spring 7. When the right side of the contact plate 6 is lowered, it tilts to the left around the tip projection 3a of the conductive plate 3 via the coil spring 7, and the fixed contact 2b provided on the right outer surface of the short piece 2a of the movable contact plate 2
The movable contact plate 4 presses the upper part of the left outer surface to turn on the switch, and the movable contact plate 4 and the fixed contact plate 2 constitute a switch contact S. In this ON state, if you push down the left side of the operating body 6,
The coil spring 7, which had been bent into a dogleg shape, reverses and tilts the movable contact plate 4 to the right, and the movable contact plate 4 separates from the fixed contact 2b to turn off the switch.

By the way, there is a primary coil 8 inside the switch body 1.
One end of a is connected to the fixed contact plate 2, and the other end is connected to one end of the external load 9, and the power source 10, the load 9,
A galvanometer transformer 8 is housed in which a primary coil 8a is inserted in series in a series circuit of switch contacts S. A series circuit consisting of a diode 11 and a lighting element 12 for indicating energization consisting of a light emitting diode is connected to both ends of the secondary coil 8b of the galvanic transformer 8. The energization display lighting element 12 is inserted into a hole 13 penetrating from the back side of the operating body 6 to the front side, so that the lighting state can be visually recognized from the front side of the operating body 6.
Further, in the operating body 6, an operation display lighting element 15 made of a light emitting diode is inserted into a hole 14 bored on the right side of the hole 13, similar to the energization display lighting element 12. The operation display lighting element 15 has its cathode connected to the cathode of the energization display lighting element 12 as shown in FIG. Connected to a connection point. One end of the power source 10 on the non-load side is connected to the conductive plate 3 via a power line connected to a quick connection terminal 18 provided inside the switch body 1.

However, if the switch contact S is now in the OFF state as shown in FIG.
5 is in a state where the power supply 10 is directly cut off by the switch contact S and the light is turned off. On the other hand, load 9
Since the switch contact S is off, it is not energized,
Therefore, no current flows through the primary coil 8a of the galvanometer transformer 8, and no secondary output is generated, so that the energization display lighting element 12 is also turned off. In other words, it can be confirmed that the switch contact S is off and the load 9 is not energized by turning off both lighting elements 12 and 15.

Next, when switch contact S is turned on, power supply 10,
Switch contact S, primary coil 8 of galvanic transformer 8
a, current flows through the closed circuit of load 9 and power source 10,
The load 9 is energized. At the same time, galvanometer transformer 8
A secondary output is generated in the secondary coil 8b, and this secondary output causes the energization display lighting element 12 to emit light. On the other hand, when the switch contact S is turned on, the resistance becomes 1.
6. Current also flows through the diode 17 to the operation display lighting element 15, and the operation display lighting element 15 lights up to emit light. In this way, both lighting elements 12, 15
When lit, switch contact S turns on and load 9
This allows you to confirm that power is being supplied to the Here load 9
If there is a disconnection failure for some reason and energization is not performed, no current will flow through the primary coil 8a of the galvanometric transformer 8, and therefore no secondary output will be generated, and the energization display lighting element 12 will be turned off. That is, the operation display lighting element 15 lights up to indicate the ON state of the switch contact S, but the energization display lighting element 12 goes out to indicate that the load 9 is not energized. A failure of the load 9 can be determined from the states of both lighting elements 15 and 12.

As described above, the present invention constitutes a closed circuit for energizing the load by the load, the primary coil of the galvanometer transformer, the power source, and the switch contact, and also includes the power source, the switch contact, and the lighting element for indicating energization. A closed circuit for indicating energization is constructed, and a lighting element for indicating operation is connected in parallel to the secondary coil of the galvanic transformer, so when the switch contact is energized, the lighting element for indicating energization is lit. If the load is operating normally and the load current flows, the operation display lighting element will be lit at the secondary output of the galvanic transformer to indicate that the load is operating normally. Since operation and energization can be indicated using separate lighting elements, it is possible to detect load failures in which only the energization display lighting element lights up, or power outages where both lighting elements do not light up even when the switch contact is turned on. This has the effect of making it easy to identify.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the same as above, S is a switch contact, S ₀ is an auxiliary switch contact, 10 is a power source, 12 is a lighting element for indicating energization, 15 Reference numeral 8 indicates a lighting element for displaying operation, 8 a galvanometer transformer, 8a a primary coil, and 8b a secondary coil.

Claims (1)

[Claims] 1 The load, the primary coil of the galvanic transformer, the power supply, and the switch contact constitute a closed circuit for energizing the load, and the power supply and the switch contact,
A switch with energization display and operation display functions, characterized in that the energization display lighting element forms a closed circuit for energization display, and the operation display lighting element is connected in parallel to the secondary coil of the galvanic transformer.