JPS6258532A - Relay - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industry 1-1 Utilization] This invention relates to a relay that operates or controls devices connected to the same or other electrical circuits by opening and closing electrical contacts; In particular, it relates to a relay that allows checking from the outside whether or not the relay is operating.

[Prior Art] Conventionally, in order to externally check whether a relay is operating or not, the ON/OFF signal line of the relay has been directly checked using a digital voltmeter, an oscilloscope probe, or the like.

[Problems to be solved by the invention]However, in this method of externally checking whether or not a relay is operating, the signal line is often mounted on the back side of the relay; The problem is that it is difficult to check. Furthermore, since 31 devices such as a digital voltage 111 and an oscilloscope are used, checking becomes complicated.

[Purpose of the Invention] The first object of this invention is to solve the above-mentioned conventional problems, and it is possible to check whether or not a relay is operating regardless of the signal line, and moreover, it is possible to check whether a relay is operating or not using a digital voltmeter or The object of the present invention is to provide a relay that does not require the use of a meter such as a Roscope.

[L-stage to solve the problem] The L-stage of the present invention to achieve the above object includes an excitation coil and a visible light-emitting diode connected to the excitation coil, The diode emits light when the excitation coil is excited.

[Operation] The relay configured in this way is excited by applying an excitation voltage to the excitation coil, and when the relay operates,
A light emitting diode connected to the excitation coil also emits light. Therefore, to check whether the relay is operating or not, it is only necessary to visually check from the outside whether the light emitting diode is emitting light or not.

[Embodiments] Hereinafter, embodiments of the relay according to the present invention will be described in detail with reference to the drawings.

1 to 3 show an embodiment of a relay according to the present invention.

As shown in FIG. 1, the relay 1 is a so-called closed type reed φ relay that is protected from contact and crosstalk, and is equipped with a molding case 2.

As shown in FIG. 2, the circuit 3 of the relay 1 is a circuit having a so-called meter contact, and when the excitation coil 4 is excited, a switch 5 (make contact) is turned on.

Note that 6 is an external transistor constituting the drive circuit.

Now, a light emitting diode 7 is connected in parallel to the excitation coil 4 of the circuit 3. This light emitting diode 7 has a diameter of about 1 to 21111φ, and is attached to the case 2.
It is embedded and mounted in the No. 1 bin 8 (see FIGS. 1 and 3) portion of the. As shown in FIG. 3, the light emitting part of the light emitting diode 7 is covered with a resin lens, and the corner of the light emitting part protrudes from the -1- surface of the case 2.

In the relay 1 configured as described above, when a drive signal is input to the external transistor 6, the transistor is turned on, current flows to the excitation coil 4, and the excitation coil 4 is excited. As a result, the switch 5 is turned on and the relay 1 is activated.

Now, since the light emitting diodes 7 are connected to the excitation coil 4 in two rows, current flows to the light emitting diodes 7 as well as the excitation coil 4, and as the excitation coil 4 is excited, the light emitting diodes 7 also Emits light.

The light emitting part of the light emitting diode 7 is wrapped in a resin lens, and the -1U part of the light emitting part is connected to the 1 part of the case 2.
The light from the light emitting diode 7 can be confirmed from the outside with the LI view because it protrudes from the surface.

Although the embodiments have been described above, the light emitting diode
It may also be connected in series to the excitation coil.

As long as the light from the light emitting diode can be visually confirmed from the outside, four portions of the light emitting portion of the light emitting diode do not necessarily need to protrude from the -L surface of the case.

Further, the type of the relay does not matter, such as a non-polar relay, a polar relay, a special relay, etc.

Further, the relay is not necessarily limited to one mounted in the case, and may be a so-called open type relay as long as the light from the light emitting diode can be visually confirmed from the outside.

Next, the size of the light emitting diode is approximately 1 to 2 + 1 in diameter.
It is not limited to the size of 11φ, but can be made according to the size of the relay. Furthermore, the type of light emitting diode is not limited as long as the light can be visually confirmed from the outside at L1. The mounting location of the light emitting diode is not limited to the 1st pin portion of the case.

[Effects of the Invention] As is clear from the above description, the relay according to the present invention includes an excitation coil and an [i
a visible light emitting diode, the light emitting diode emits light when the excitation coil is excited;
It is possible to check whether a relay is operating or not, regardless of the signal line, and there is no need to use instruments such as a digital voltmeter or oscilloscope.

4. Simplified drawing t11. Explanation' Fig. 1 is an external perspective view showing one embodiment of the relay according to the present invention, Fig. 2 is a relay circuit diagram, and Fig. 3 is a diagram of the relay according to the first embodiment.
FIG.

1...Relay, 2...Case, 4-11iJI
Magnetic coil, 5... switch, 7... light emitting diode, 8-1M bin.

Claims (2)

[Claims] (1) A relay comprising an excitation coil and a visible light emitting diode connected to the excitation coil, wherein the light emitting diode emits light when the excitation coil is excited. (2) The relay according to claim 1, wherein the relay is mounted in a case, and the light emitting diode is connected in parallel to an excitation coil and embedded in the case so that it can be visually confirmed from the outside.