JPH0246009Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to an electromagnet device for a polarized relay or the like.

[Background technology]

2. Description of the Related Art As an electromagnetic device for a polarized relay or the like, one in which an electromagnetic block has an E-shaped magnetic path is known. That is, as shown in FIG. 1, this uses an electromagnetic block A in which a yoke 3 is constructed such that an iron core 2 around which a coil 1 is wound is located in the center of the letter E. The permanent magnet block B to be combined with this is formed in a U-shape so that the ends of two magnetic pieces 5, 5 on the same side are in contact with both sides of the permanent magnet 4 in the direction of magnetization. When both blocks A and B are arranged as shown in Fig. 1 and the direction of the current flowing through the coil 1 is changed, the magnetic piece 5 is attracted to the magnetic pole part 2a of the iron core 2 or the magnetic pole part 3a of the yoke 3. or A polarized relay uses this action to open and close a contact mechanism.

This electromagnet device has good magnetic efficiency and good operating characteristics. It also has excellent sensitivity.

As a structure for realizing the basic magnetic circuit of the electromagnetic block A, the structure shown in FIGS. 2 and 3 is known. However, the one in Figure 2 is
When the outer diameter of the coil 1 wound around the iron core 2 is large,
The drawback is that the magnetic pole part requires complicated bending, and the yoke is easily deformed. On the other hand, the third
The one shown in the figure has the advantage that it does not have the above disadvantages and is suitable for the latching type in terms of magnetic efficiency, but in order to obtain single stable operation,
This is inconvenient because strict demands are placed on dimensional accuracy, such as changing the opposing areas and maintaining a magnetic unbalanced gap in order to unbalance the attractive force characteristics.

[Purpose of invention]

This invention was made in view of the above-mentioned circumstances, and aims to provide an electromagnet device with magnetic characteristics that has a simple structure and can easily realize a single stable structure.

[Disclosure of invention]

In order to achieve the above object, the electromagnet device according to this invention consists of a combination of an electromagnetic block having a coil and a permanent magnet block having a permanent magnet, and the electromagnetic block is parallel to the iron core around which the coil is wound and has the tip thereof In an electromagnet device equipped with a yoke piece formed by bending a magnetic pole part facing a magnetic pole part of an iron core, it is preferable that the opposing magnetic pole part at the tip of the yoke piece is bent only on one side of the magnetic pole part of the iron core. Features. This will be described in detail below based on drawings showing examples thereof.

The electromagnet device according to this invention also has an electromagnetic block A having a coil 1 and a permanent magnet block B having a permanent magnet 4 arranged as shown in FIG. However, it differs from the conventional one in that the yoke 3 of the electromagnetic block A is formed as shown in FIG. That is, although the electromagnetic block A basically has the configuration shown in FIG. The curved shape is such that the magnetic pole part 3a facing the iron core magnetic pole part 2a is not on both sides of the iron core magnetic pole part 2a as shown in FIG. 3, but on only one side as shown in FIG. 4. .

In this configuration, if it is necessary to perform a latching mechanism similar to that in Fig. 3, a flat plate-shaped auxiliary piece is prepared in advance.
This auxiliary piece 6 can be brought into contact with the opposite end of the yoke piece 31 and connected magnetically to form another opposing magnetic pole part 3a. Since the auxiliary piece is a flat plate, it is easy to make a highly accurate one. Possible and preferable.

[Effect of the invention] As seen above, the electromagnet device according to the invention has a yoke formed by bending the magnetic pole part parallel to the iron core and facing the iron core magnetic pole part at the tip, and Since the magnetic pole portion is formed only on one side of the iron core magnetic pole portion, the bending process is simple, the yoke is less likely to deform, and the amount of winding of the coil can be increased. Material removal for the yoke is improved. Furthermore, the magnetic saturation of the yoke disappears, and the magnetic attraction characteristics required for a single stable type are difficult to achieve, such as creating a difference in area between the two opposing magnetic poles and creating an imbalance in the magnetic gap. can be obtained without any Another advantage is that the single stable type and latching type use the same yoke.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the overall structure of the electromagnet device, Figs. 2 and 3 are perspective views showing the structure of the yoke of the conventional electromagnet block, and Fig. 4 shows the structure of the yoke of the electromagnet block in this invention. FIG. A...Electromagnetic block, B...Permanent magnet block, 1...Coil, 2...Iron core, 2a...Iron core magnetic pole part, 3...Yoke, 31...Yoke piece, 3a...
...Opposing magnetic pole part, 4...Permanent magnet.

Claims (1)

[Scope of utility model registration request] It consists of a combination of an electromagnetic block having a coil and a permanent magnet block having a permanent magnet, and the electromagnetic block is parallel to the iron core around which the coil is wound, and has a bent magnetic pole part facing the magnetic pole part of the iron core at the tip. 1. An electromagnet device comprising a yoke piece, characterized in that an opposing magnetic pole portion at a tip of the yoke piece is bent only on one side of a core magnetic pole portion.