JPH0183303U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing one embodiment of the electromagnet device according to the invention, and FIGS. 2 a to 2 d are schematic partial sectional views showing its operation. 1... Electromagnet block, 2, 3... Armature block, 11, 12... Yoke, 11a, 12a... One end of yoke (single stable side), 11b, 12
b...Yoke other end (latching side), 14...iron core, 14a, 14b...iron core both ends (iron core magnetic pole part),
15...Coil, 21,31...Permanent magnet, 22,2
3, 32, 33...magnetic material piece, 14c, 14d, 1
21, 122...Magnetic path parts, G...Gap.

Claims (1)

[Scope of utility model registration request] It is equipped with an electromagnetic block and two armature blocks, and the electromagnetic block has an iron core around which a coil is wound and whose ends become magnetic pole parts of different polarities when the coil is excited, and an iron core arranged on both sides of the coil. It has a pair of yokes, one end of which is shorter than the other, and a magnetic path component that forms a magnetic path that extends from the core magnetic pole to the yoke at a position closer to the coil has a gap. The two armature blocks each have two pieces of magnetic material sandwiching a permanent magnet from both ends in the direction of magnetization, and one armature block is provided between the two magnetic pieces.
One end of the iron core is sandwiched between the ends of the two magnetic pieces on the same side, and at least one of the outer surfaces of the two magnetic pieces faces at least one of the ends of the pair of yokes, thereby performing a single stable operation. The other armature block holds the other end of the iron core between the ends of the two magnetic pieces on the same side, and both outer surfaces of the two magnetic pieces touch the other ends of the pair of yokes. An electromagnetic device that faces each part and is designed to operate in a latching manner.