JPS58140610U

JPS58140610U - magnetic drive device

Info

Publication number: JPS58140610U
Application number: JP3822782U
Authority: JP
Inventors: 宮島　清
Original assignee: 株式会社白金製作所
Priority date: 1982-03-18
Filing date: 1982-03-18
Publication date: 1983-09-21
Also published as: JPS6350818Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の磁力駆動装置の一実施例をビデオテー
プレコーダのブレーキ機構に適用した状態の平面図、第
２図はその磁力駆動装置の分解斜視図、第３図は各部品
組立調整時の平面図、第４図は各部品組立調整時の一部
を示す断面図、第５図は磁気回路のもれ磁束を解消する
ための一例を示す説明図、第６図および第７図はそれぞ
れ磁気回路の変形例を示す説明図、第８図から第１０図
はそれぞれコイル装置の変形例を示す断面図である。１２・・・基板、１５．１６・・・アーマチュアとして
のレバー、１８．１８Ａ・・・吸着部材としての鉄心、
２０・・・磁気回路、２１．２２・・・保持部としての
保持板、３３．３４・・・支持部材としてのヨーク部材
。ｌ　　　　　＼第１図　　　　　　　　　第算第５図第４図Fig. 1 is a plan view of an embodiment of the magnetic drive device of the present invention applied to a brake mechanism of a video tape recorder, Fig. 2 is an exploded perspective view of the magnetic drive device, and Fig. 3 is an assembly adjustment of each part. FIG. 4 is a cross-sectional view showing a part of each component during assembly and adjustment; FIG. 5 is an explanatory diagram showing an example of eliminating magnetic flux leakage in the magnetic circuit; FIGS. 6 and 7. are explanatory views showing modified examples of the magnetic circuit, and FIGS. 8 to 10 are sectional views showing modified examples of the coil device, respectively. 12... Board, 15.16... Lever as armature, 18.18A... Iron core as adsorption member,
20... Magnetic circuit, 21.22... Holding plate as a holding part, 33.34... Yoke member as a supporting member. l ＼ Figure 1 Figure 5 Figure 4

Claims

[Scope of utility model registration request]

(1) A substrate, an adsorption member disposed on the substrate constituting a magnetic circuit, an armature that is adsorbed to and removed from the end face of the adsorption member, and an armature that approaches and separates from the end face of the adsorption member. a support member rotatably supported in a direction in which the suction member is rotated, and a holding unit that holds the support member movably on the substrate within a plane perpendicular to the end face of the suction member and the rotation plane of the armature, respectively. A magnetic drive device, characterized in that the armature is in close contact with the end face of the adsorption member, the position of the support member is adjusted, and the support member is fixed to the holding portion.

(2) Utility model registration Claim 1, wherein the armature is comprised of a pair of levers made of a magnetic member that is attracted to and released from both end surfaces of the attraction member;
The support member is comprised of a pair of yoke members that are movably held by the holding portion and support each of the levers so as to be rotatable in a direction toward and away from the end surface of the suction member. Magnetic drive device.

(3) Utility Model Registration The magnetic drive device according to claim 2, wherein one side of the pair of levers and the pair of yoke members has a lower magnetic resistance than the other side.