JPH0116275Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of the invention The invention provides contact portions using an electromagnetic block in which a mover having a permanent magnet moves within a working gap formed by an electromagnetic core. This relates to an electromagnetic block of a polarized relay that is driven.

(b) Problems with the prior art Conventionally, as the electromagnetic block of the above-mentioned polarized relay, an E-shaped iron core was used (for example, the
-30232) has been published. That is, this is
As shown in Figure 1, a coil 3 is wound around the central leg 2 of an E-shaped iron core 1, and a permanent magnet is magnetized with two pieces of iron in each of the two working gaps formed at the ends of the three legs. The magnetic poles 5, 5 of a mover 4 configured in a U-shape are placed between them in the direction. For example, depending on the excitation direction of the coil, the mover moves to the right as shown in the figure to form a magnetic circuit. The mover moves to the left by excitation of the coil in the opposite direction, and the contacts open and close in conjunction with the movement of the mover, but in this conventional example, the iron core is E-shaped as described above. If the required magnetic path cross-sectional area is the area a in the central leg 2 where the coil is located, then a cross-sectional area of 3 x a is required for the three legs, and if the space b in which the coil 3 is wound is included, the width becomes large. Therefore, it is not suitable as a relay component, which is required to be miniaturized in response to the electronicization of electrical equipment.

(c) Purpose of the invention The purpose of the invention is to provide an electromagnet for a polarized relay that is suitable for the era of miniaturization by devising the form of the electromagnet core in view of the problems of the conventional example described above.

(d) Structure of the invention In order to achieve the above-mentioned object, the present invention forms an iron core into a U-shape, forms a U-shaped part at one end of the iron core by orthogonal to the U-shape of the iron core, and The other end of the iron core is positioned between the U-shaped portions of the iron core, two working gaps are formed on both sides of the other end of the iron core, and two working gaps are formed on both sides of the U-shaped mover including permanent magnets. The two magnetic poles were placed in the two working gaps, respectively, so that the mover could be moved laterally. In other words, in the present invention, the E-shaped core is deformed to have two legs at the coil partial cross-sectional position.

(E) Embodiment In the embodiment shown in FIG. 2, the rod-shaped iron core 7 around which the coil 6 is wound and the rod-shaped main body 9 of the yoke portion 8 are placed side by side and parallel to each other, and are integrated at one end. The other end of the yoke main body 9 is branched and has opposing plates 10 and 11 facing both side surfaces of the other end 7a of the iron core 7, and both opposing plates are connected by a connecting portion 12 below the other end 7a of the iron core. has been done. The inner surface 9a of the yoke main body 9 extends outward from the surface 10a of the opposing plate 10, so that even if the coil 6 has a large diameter, it can be accommodated therein. Reference numeral 13 denotes a mover formed by fixing a permanent magnet 14 in a U-shape with two plate-shaped iron pieces 15, 15a. It is placed so that it can move laterally within the working gap formed between the two. The mover 13 is usually fixed to a suitable frame (not shown), and a movable contact plate of the contact section is connected to the frame, and the contacts are opened and closed by movement of the mover 13. Now, as shown in FIG.
When the coil 6 is excited in the direction of the arrow m, the iron core end 7a becomes the S pole and the opposing plate 1
0 and 11 become N poles, the mover 13 moves in the direction of arrow k, and the iron piece 15, the opposing plate 11, and the iron piece 1
5a and the core end 7a attract and abut each other.
When the coil 6 is excited in the direction of the arrow m', the mover 13 moves in the direction of the arrow k' and returns to its original position as shown in FIG. The one shown in FIG. 3 is another embodiment in which a yoke portion 19 is
The main body 17 of is placed below and in parallel, and the main body 17
One end of the iron core 16 is fitted into the upright portion 17a at the rear end, and the other end 16a of the iron core 16 is placed between opposing plates 18, 18 that branch at the other end of the yoke main body 17, The inner surface 17b of the main body is the opposing plate 1
It is lower than the upper surface of the connecting portion 20 of No. 8. The mover 13 is placed and moved in the same manner as in the previous embodiment. In these embodiments, the inner surface 9 of the yoke body
Although a and 17b are extended so as to be able to accommodate a coil having a large diameter, this is not necessarily necessary.

(F) Effect The present invention is as described above, and the conventional E-shaped core has three parts in the coil part and its sides.
What used to require legs can now be replaced with two legs, making it possible to construct a compact electromagnetic block whose width is at least as narrow as the width of the iron core.

[Brief explanation of the drawing]

FIG. 1 is a top view of a conventional example, FIG. 2 is a perspective view of one embodiment of the present invention, and FIG. 3 is a perspective view of another embodiment. In the figure, 7...iron core, 8...yoke part, 9...yoke part main body, 10, 11...opposing plate branched at one end of yoke part main body, 13...mover, 14...permanent magnet, 15 , 15a... plate iron piece, 16... iron core, 19... yoke part.

Claims (1)

[Scope of utility model registration request] One end of the U-shaped core is formed into a U-shape that is perpendicular to the U-shape of the core, and the other end of the core is positioned between the U-shaped portions of one end of the core, and work is done on both sides of the other end of the core. The magnetic pole portion of the mover, which forms a gap and is U-shaped and includes a permanent magnet, is positioned within the above two working gap and is held so as to be movable within the same working gap. An electromagnetic block of a polarized relay.