JPS6435717U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an embodiment of this invention, Fig. 2 is an exploded perspective view of a conventional device, Fig. 3 is a longitudinal sectional view of the conventional device shown in Fig. 2, and Fig. 4 is a longitudinal sectional view of another conventional device. It is a front view. 1: Magnetic material, 2: Permanent magnet, 3, 4: Coil,
5: Pipe, 16: Plunger, 16a, 16b
: Rod part, 17, 18: Armature, 17a, 18
a: Guide hole.

Claims (1)

[Scope of utility model registration request] A magnetic body with a through hole in the center and a permanent magnet attached to the outer circumferential surface, electromagnetic coils that sandwich this magnetic body and are connected in series, a pipe that passes through these electromagnetic coils and the magnetic body, and this pipe. A plunger made of a magnetic material is movably inserted into the pipe, a yoke straddles between both end faces of the pipe and surrounds the magnetic material and the electromagnetic coil, and is attached to a portion of the yoke opposite to both end faces of the plunger. In a bistable self-holding electromagnet device equipped with a plunger armature, a rod portion having a diameter smaller than that of the plunger is integrally formed at both ends of the plunger, and the armature is made of a non-magnetic material, and the armature is made of a non-magnetic material. A bistable self-holding electromagnet device characterized by having guide holes for guiding rod parts at both ends of a plunger.