JPH01120304U

JPH01120304U -

Info

Publication number: JPH01120304U
Application number: JP1537488U
Authority: JP
Priority date: 1988-02-08
Filing date: 1988-02-08
Publication date: 1989-08-15

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による有極電磁石
の斜視図、第２図はこの考案の他の実施例による
有極電磁石の正面図、第３図はこの考案の更に他
の実施例による有極電磁石の正面図、第４図は従
来の有極電磁石の斜視図、第５図および第６図は
第４図の有極電磁石の動作を説明するための概略
的な磁気回路図である。図において、１はヨーク、１０１，１０２はそ
の両脚部、２は励磁コイル、３，３Ａは永久磁石
装置、４，４Ａはアマチユア、４０１，４０２は
その吸着部、４０３，４０３Ａは架橋部、６，６
Ａ，６Ｂは非磁性材料のプレートである。なお、
各図中同一符号は同一部または相当部を示す。 Fig. 1 is a perspective view of a polarized electromagnet according to an embodiment of this invention, Fig. 2 is a front view of a polarized electromagnet according to another embodiment of this invention, and Fig. 3 is a perspective view of a polarized electromagnet according to another embodiment of this invention. FIG. 4 is a front view of a polarized electromagnet, FIG. 4 is a perspective view of a conventional polarized electromagnet, and FIGS. 5 and 6 are schematic magnetic circuit diagrams for explaining the operation of the polarized electromagnet shown in FIG. 4. . In the figure, 1 is a yoke, 101 and 102 are its legs, 2 is an excitation coil, 3 and 3A are permanent magnet devices, 4 and 4A are armatures, 401 and 402 are its adsorption parts, 403 and 403A are bridge parts, and 6 ,6
A and 6B are plates made of non-magnetic material. In addition,
The same reference numerals in each figure indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

A substantially U-shaped yoke, an excitation coil wound around this yoke, a permanent magnet device disposed between both legs of the yoke with magnetic poles of the same polarity facing each other, and both legs of the yoke. an armature consisting of both adsorption parts facing the outer surface of the armature and a bridge part connecting these adsorption parts to each other, a part of the bridge part of the armature is brought close to the permanent magnet device, and both adsorption parts of the armature are arranged close to each other. The armature is moved back and forth along the permanent magnet device by making the distance between the inner surfaces of the yoke larger than the distance between the outer surfaces of both legs of the yoke and switching the direction of the current flowing through the excitation coil. A polarized electromagnet, characterized in that a plate made of a non-magnetic material is interposed between the permanent magnet device and the part of the armature.