JPS62104412U

JPS62104412U -

Info

Publication number: JPS62104412U
Application number: JP19768185U
Authority: JP
Priority date: 1985-12-23
Filing date: 1985-12-23
Publication date: 1987-07-03

Description

[Brief explanation of the drawing]

第１図は本考案一実施例の上面図、第２図は従
来例の斜視図、第３図は同上の上面図である。１，２はヨーク、１ａ，１ｂ，２ａ，２ｂは脚
片、３は永久磁石、４はアーマチユア、４ａは基
端部、４ｂは中央部、４ｃは自由端部、５は励磁
コイル、６は凹所、７はヒンジ突起、８は押付け
用板ばねである。 FIG. 1 is a top view of an embodiment of the present invention, FIG. 2 is a perspective view of a conventional example, and FIG. 3 is a top view of the same. 1 and 2 are yokes, 1a, 1b, 2a, and 2b are leg pieces, 3 is a permanent magnet, 4 is an armature, 4a is a base end, 4b is a central part, 4c is a free end, 5 is an exciting coil, and 6 is a 7 is a hinge protrusion, and 8 is a pressing plate spring.

Claims

[Scope of utility model registration request]

A pair of yokes made of U-shaped magnetic plates are arranged so that one side faces each other, and a permanent magnet is inserted between the center pieces of both yokes, and the base end rotates between one leg piece of both yokes. The free end of the armature, which is held freely and has an excitation coil wound around its center, is inserted between the other legs of both yokes, and the free end of the armature is inserted between the legs of both yokes depending on the direction of the current flowing through the excitation coil. It is attracted to one of the other leg pieces and latched with a permanent magnet, and is inserted into a recess bored in the leg piece of one yoke at the base end of the armature on the surface facing the leg piece of one yoke. A hinge protrusion is provided to engage, and the other end of the mounting leaf spring, which has one end attached to the free end side of the hinge protrusion on the surface facing the leg piece of the other yoke, is attached to the leg piece of the other yoke. In a polarized electromagnet that forms a holding means for the armature by slidingly contacting the facing surface of the armature, the sliding contact point of the pressing plate spring to the leg of the yoke is connected to the hinge fulcrum by the hinge protrusion and the magnetic attraction force at the base end of the armature. A polar electromagnet characterized in that the shape and mounting position of a pressing leaf spring are set so that it is located between the center of action and the center of action.