JPS60195833A - Electromagnetic relay with operation display lamp - 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 Field of the Invention The present invention relates to an electromagnetic fM with an operation indicator light and an electric appliance.

<Prior art and its problems> A conventional electromagnetic relay is one in which a series body of a light emitting diode or neon lamp for operation indication and a resistor for current limiting is directly connected in parallel to an electromagnetic coil. In some cases, a secondary coil is wound around the electromagnetic coil, and the above-mentioned series body is connected in series to the secondary coil so as to be excited by the electromagnetic coil.

The former type has the disadvantage that even if the electromagnetic coil is disconnected, current flows through the series body, and the display remains in the operating display state.

The latter does not have the problem of displaying an operation display even if the electromagnetic coil is disconnected, but it is troublesome to wind the secondary coil, and the secondary coil and the above series body cannot be directly connected by soldering etc. It is easy to break wires during brazing, and has poor workability.

<Objective of the Invention> The present invention has been made to eliminate the drawbacks of the above-mentioned conventional ones, and the object is to provide an electromagnetic relay with an operation indicator light that does not cause display malfunctions and improves assembly work. It is said that

<Structure and Effects of the Invention> In order to achieve the above object, the present invention includes an electrically insulating film busy plane coil and a light emitting diode connected in series to the electrically insulating film coil through a current limiting resistor, and The film is characterized in that the film is sandwiched between the electromagnetic coil and the iron core frame so that an induced voltage is generated in the planar coil when the electromagnetic coil is heated.

As is clear from this configuration, 1 in this invention.

If the electromagnetic coil is disconnected, the light emitting diode will no longer emit light, which eliminates the possibility of incorrect display.
If you prepare the film with the above-mentioned planar coil or light emitting diode in advance, you can easily attach this film to the electromagnetic block side during assembly, so there is no risk of disconnection of the secondary coil during assembly as in the conventional method. can also be resolved and productivity will improve.

<Description of Embodiment> An embodiment of Jin's invention will be described below with reference to the drawings.

FIG. 1 shows an example of an electromagnetic relay with an operation indicator light according to the present invention.

In the figure, reference numeral 1 denotes an electrically insulating terminal base, on which a pair of fixed contact pieces 2, 3, a fixed terminal 4, a coil terminal 5, etc. are implanted. Reference numeral 6 denotes an L-shaped iron core frame fixed to the base 1, and an iron core 7 is caulked to a vertical piece 6a of the L-shaped iron core frame. 8 is an electromagnetic coil wound around the iron core 7 via a spool 9; 10 is a movable iron piece that is pivoted at the tip of the horizontal piece 6b of the iron core frame 6; and 11 is a return spring of the movable iron piece 10. A movable contact piece 13 is fixed to the movable iron piece 10 via electrically insulating metalwork 2.
Each fixed contact 1 of the fixed contact pieces 2 and 3 is attached to the tip of the fixed contact piece 3.
4,151C A movable contact 16 that approaches and separates is fixed.

16 and 17 are lead wires.

Reference numeral 18 denotes an electrically insulating film, which is formed into, for example, a rectangular shape. In this film 18, as shown in FIG. 2, an overwound planar coil 19 made of copper foil, for example, is formed on one end side VcF'i, centered around the central hole 20, and separated by two rectangular holes. On the other end side, a current limiting resistor 22 and a light emitting diode 23 as an operation indicator are provided, and these three are connected to a wiring pattern 24C made of copper foil.
025° 25 connected in series by 24&~24C) is the wiring pattern 24a, 24 of the light emitting diode 23.
The soldering part for bK, 26.26 is the arrangement M of the resistor 22
Hatan 24. and a soldered part 27 to one end of the planar coil 19, and a soldering part 27 to the other end of the planar coil 19 and the wiring pattern 2.
This is the conductor bonding part with 4e.

After forming the circuit, the other end of the film 18 is folded along a predetermined folding line 1l- along one side of the rectangular hole 21.
1VCG #1 is bent at a right angle in the direction of arrow a. Then, when assembling the electromagnet block, one end is inserted between the vertical piece 6a of the nine-iron core frame 6 and the electromagnetic coil 8 as shown in FIG. 7, and attach the other end side to the horizontal part 6 of the iron core frame 6.
It is fixed with bK adhesive etc. Note that the planar coil 19 and the like are surface-treated with an insulating coating (not shown) in order to electrically insulate them from the iron core frame 6 and the like.

In the above configuration, the iron core 7 is excited by mW applied to the electromagnetic coil 8. Therefore, the movable iron piece 10 is attracted to the iron core 7, and therefore the movable contact 16 of the movable contact piece 13 and the fixed contact 15 are closed. On the other hand, the electromagnetic coil 8
When energized, an induced voltage is generated in the planar coil 19, and the light emitting diode 23 emits light to indicate an operation.

Conversely, when the electromagnetic coil 8 is de-energized, the movable iron piece 10 is returned by the spring force of the return spring 11, so that the movable contact 16 and the fixed contact 15 are opened. At this time, the above planar coil 1
Since no 9Kil electromotive voltage is generated, the light emitting diode 23
It also does not emit light.

Here, if the electromagnetic coil 8 is disconnected, no induced voltage is generated in the planar coil 19. In other words, there is no possibility of an erroneous display such as the light emitting diode 23 lighting up when the coil 8 is disconnected. In particular, if the planar coil 19, light emitting diode 23, etc. are covered with the electrically insulating film 181C in advance, this film 18 can be easily assembled to the electromagnetic block when assembling the electromagnetic relay. In other words, as in the conventional case, two
This eliminates the trouble of winding the next coil and the work of attaching a half-H" during assembly, so that it can be manufactured efficiently.

Note that bending the other end of the insulating film 18 is not particularly limited;
Depending on the position and arrangement space, the film 18 may be used without being bent.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of an electromagnetic relay with an operation indicator light according to the present invention, and FIG. 2 is a perspective view of a main part of the same electromagnetic relay including an electrically insulating film. 6... Iron core frame, 8... Electromagnetic coil, 18... Electrical insulating film, 19... Planar coil, 22... Current limiting resistor, 23... Light emitting diode. Figure 1 Figure 2

Claims (1)

[Claims] (1) A planar coil is formed on an electrically insulating film, and a light emitting diode for displaying operation is connected in series to this planar coil via a current control resistor, and the planar coil is excited by energization of an electromagnetic coil. State of being done 11
I4VC An electromagnetic relay with an operation indicator light, characterized in that the film described above is sandwiched between an electromagnetic coil and an iron core frame.