JPS63190189U

JPS63190189U -

Info

Publication number: JPS63190189U
Application number: JP7729487U
Authority: JP
Priority date: 1987-05-25
Filing date: 1987-05-25
Publication date: 1988-12-07
Also published as: JPH0423892Y2

Description

[Brief explanation of the drawing]

第１図は本考案の永久磁石保持装置の一実施例
を示す縦断面図、第２図は第１図の２−２線に沿
つて得た断面図、第３図は本考案の永久磁石保持
装置の他の実施例を示す縦断面図、第４図は本考
案の永久磁石保持装置のさらに他の実施例を示す
縦断面図、第５図は本考案の永久磁石保持装置の
さらに他の実施例を示す縦断面図、第６図は第５
図の６−６線に沿つて得た断面図である。１２，７２：磁気回路ブロツク、１６，７４：
切換用永久磁石、１８，７６：非磁性部材、２０
，７８……磁性部材、２４，８０：内腔、２８，
８４：磁気吸着面、３０：操作ノブ、３４，５４
，９０：カバー、５２，６２：キヤツプ。 Fig. 1 is a vertical sectional view showing an embodiment of the permanent magnet holding device of the present invention, Fig. 2 is a sectional view taken along line 2-2 in Fig. 1, and Fig. 3 is a permanent magnet of the present invention. FIG. 4 is a vertical cross-sectional view showing another embodiment of the permanent magnet holding device of the present invention; FIG. 5 is a longitudinal cross-sectional view showing still another embodiment of the permanent magnet holding device of the present invention. FIG. 6 is a vertical cross-sectional view showing an embodiment of
FIG. 6 is a cross-sectional view taken along line 6-6 in the figure. 12, 72: Magnetic circuit block, 16, 74:
Permanent magnet for switching, 18, 76: Non-magnetic member, 20
, 78...Magnetic member, 24, 80: Inner cavity, 28,
84: Magnetic adsorption surface, 30: Operation knob, 34, 54
, 90: cover, 52, 62: cap.

Claims

[Claims for Utility Model Registration] (1) A magnetic circuit block comprising a pair of magnetic members each having a magnetic attraction surface and a non-magnetic member disposed between the magnetic members, and a rotatable magnetic circuit block within the magnetic circuit block. The permanent magnet includes an arranged permanent magnet and an operating mechanism that rotates the permanent magnet to selectively switch the magnetic attraction surface between an energized state and a de-energized state, and the outer circumferential surface of the permanent magnet is surrounded by a covering material. , switchable permanent magnet holding device. (2) The permanent magnet holding device according to claim 1, wherein the covering material includes a metal or resin cover coated on the outer surface of the permanent magnet. (3) The permanent magnet is a bar-shaped magnet, the operating mechanism includes an operating knob fitted to one end of the permanent magnet, and the covering material includes a cover coated on an outer surface of the permanent magnet and a a cap fitted to the end of the permanent magnet on the side of the operating knob;
A permanent magnet holding device according to claim 1 or 2 of the utility model registration claim. (4) The permanent magnet holding device according to claim 1, 2, or 3, wherein the magnetic circuit block includes a fixed permanent magnet disposed between the magnetic members.