JPH0140164Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Technical field The present invention relates to an electromagnet device built into a polarized electromagnetic relay or the like.

(b) Prior art and its problems Conventionally, in this type of electromagnetic device, in many cases, in order to fix the yoke and the coil spool,
This is done by heat welding, ultrasonic welding, or pressing with other parts.

However, these methods always involve two or more steps and have poor workability. For example, in the case of ultrasonic welding, a process of assembling a yoke and a spool and a process of applying ultrasonic vibration are required. In particular, the method of holding down the parts using other parts has the disadvantage that the two parts cannot be handled as one unit during assembly.

(c) Purpose of the invention Therefore, the purpose of the present invention is to provide an electromagnetic device in which the yoke and the spool can be easily fixed, and the two can be handled as one even during assembly.

(d) Structure and Effect of the Invention In order to achieve the above object, the electromagnet device according to the present invention has the protruding pieces at both ends of the yoke sandwiching the flanges at both ends of the spool, and the protruding pieces at both ends and the flanges at both ends. The concave and convex portions formed in the two are fitted together.

In other words, the protrusions at both ends of the yoke engage the flanges at both ends of the spool, and the concave and convex portions fit together at the same time, so that the assembly and fixing work can be done in one touch, and the assembly work is extremely easy. As a result, an inexpensive electromagnetic device can be obtained. Moreover, compared to the pressing method using other parts, both parts can be handled as one during assembly.

(e) Description of the embodiment In FIG. 1, the electromagnet device according to the present invention is
Generally, it is composed of a yoke 10, an I-shaped rod-like iron core 15, a spool 16, and a movable block 20 having magnet units 21, 21 attached to both ends.
The yoke 10 has a pair of protrusions 11a, 11b, 12a, 12b facing each other in the width direction at both ends, and is fixed to the base 30. The spool 16 is integrally molded from a suitable resin and has a center flange 17 and both end flange portions 18, 18, an iron core 15 is inserted through the center, and a coil (not shown) is wound around the body. The yoke 10 and the spool 16 are integrated by sandwiching the flanges 18, 18 at both ends with the projecting pieces 11a, 11b, 12a, 12b at both ends of the yoke 10. At this time, the protrusions 19 formed on the both end flanges 18, 18 are
It fits into the recess 13 formed in (see Fig. 2),
Both are securely fixed. Further, both ends of the iron core 15 are connected to protrusions 11a, 11b, 12a, 1 of the yoke 10.
2b, and a total of four working gaps are formed between the opposing surfaces.

The magnet units 21, 21 are permanent magnets 22, 23
Movable iron pieces 24a, 24b, 25 on both sides in the magnetization direction
a, 25b are fixed with adhesive or the like, and the frame parts 27, 2 at both ends of the movable base 26 are made of non-magnetic material such as resin.
7 to form an integral movable book 20. This movable block 20 has a movable portion 26 attached to a pin 17a on a flange 17 provided at the center of the spool 16.
By loosely fitting into the hole 28, the pin 17a is rotatably supported using the pin 17a as a fulcrum. At this time, movable iron pieces 24a, 24b, 2 located one pair at each end
5a and 25b are the above-mentioned working gaps, that is, both ends and both side surfaces of the iron core 15 and the projecting piece 11a of the yoke 10,
11b, 12a, and 12b.

On the other hand, on the base 30 are fixed contacts 31a,
Fixed terminal 32 having 31b, 36a, 36b
a, 32b, 37a, 37b, movable contact 3 at the tip
Movable contact pieces 34 and 39 having rear ends fixed to terminals 35 and 40 are installed.
4 and 39 are fitted into the groove 29 of the movable table 26.

In the above configuration, when the coil is not energized, the movable block 20 rotates in the clockwise direction, and the movable iron pieces 24a and 25a move against the protrusions 11a and 12.
a, and the other movable iron pieces 24b, 25b are in contact with both end side surfaces of the iron core 15. Each movable contact 33, 38 is a normally closed fixed contact 31b, 36.
It is in contact with b. Now, if we excite the coil,
The movable block 20 rotates counterclockwise, the movable iron pieces 24a and 25a abut against both end sides of the iron core 15, and the other movable iron pieces 24b and 25b touch the projecting piece 11.
b, 12b. And each movable contact 3
3 and 38 are switched to normally open side fixed contacts 31a and 36a.

That is, in the present invention, the projecting pieces 11a, 1 of the yoke 10
Concave portions 13 formed on 1b, 12a, 12b and convex portions 1 formed on both end flanges 18, 18 of the spool 16
By fitting the parts 9 and 9 into each other, the two can be integrated, the assembly and fixing work of both can be done with one touch, and after fixing, the two can be handled as one piece.

Note that the concave portion 13 is formed in the flange portion 18, and the convex portion 19 is formed in the flange portion 18.
may be formed on the projecting pieces 11a, 11b, 12a, and 12b.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a polarized electromagnetic relay equipped with an electromagnetic device according to the present invention, and FIG. 2 is an enlarged view of the main parts thereof. 10...Yoke, 11a, 11b, 12a, 1
2b...protrusion, 13...recess, 15...iron core, 1
6... Spool, 18... Both ends flange, 19... Convex part.

Claims (1)

[Scope of utility model registration request] It is equipped with a yoke having a pair of protrusions facing each other in the width direction at both ends, a bar-shaped iron core, a coil spool attached to the iron core, and a coil wound around the coil spool. The yoke is positioned between the protrusions at both ends to form a total of four working gaps, while the protrusions at both ends of the yoke sandwich the flanges at both ends of the spool,
An electromagnet device characterized in that concavo-convex portions formed on the protruding pieces at both ends and the flanges at both ends are fitted together.