JPS60151293U

JPS60151293U - magnetic circuit

Info

Publication number: JPS60151293U
Application number: JP2379885U
Authority: JP
Inventors: 義文溝下
Original assignee: 富士通株式会社
Priority date: 1985-02-21
Filing date: 1985-02-21
Publication date: 1985-10-08

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図は従来のボイスコイルモータの構造説明斜視図で
あり、第２図は従来のボイスコイルモータの磁気回路図
、第３図は本考案の実施例の磁気回路図、第２図、第３
図においてイはイ形式、口は口形式のボイスコイルモー
タを示す。図中、１はボイスコイルモータ、２は磁石、３は磁極、
４はコイル、５はエアギャップ、６は鉄心、７は前後面
継鉄、８は側面継鉄、９は可動子、１０はキャリッジ、
１１は磁気ヘッド、１２は磁気ディスク、１３はスピン
ドル、１４は漏洩防止用磁石、φ１□は前後面継鉄への
漏洩磁束、φ１□は側面継鉄への漏洩磁束である。＼　＼＼又＼１３ｉｚ　　　　ｔｔFIG. 1 is a perspective view explaining the structure of a conventional voice coil motor, FIG. 2 is a magnetic circuit diagram of a conventional voice coil motor, and FIG. 3 is a magnetic circuit diagram of an embodiment of the present invention. 3
In the figure, A indicates an A-type voice coil motor, and mouth indicates a mouth-type voice coil motor. In the figure, 1 is a voice coil motor, 2 is a magnet, 3 is a magnetic pole,
4 is a coil, 5 is an air gap, 6 is an iron core, 7 is a front and rear yoke, 8 is a side yoke, 9 is a mover, 10 is a carriage,
11 is a magnetic head, 12 is a magnetic disk, 13 is a spindle, 14 is a leakage prevention magnet, φ1□ is a leakage magnetic flux to the front and rear yoke, and φ1□ is a leakage magnetic flux to the side yoke. \ \ \ \ 13 iz tt

Claims

[Scope of utility model registration request]

A magnetic circuit consisting of magnetic poles that form a magnetic flux gap, a magnet that generates magnetic flux, and a yoke that connects the magnets. A magnetic circuit characterized by covering all the magnet surfaces not connected to the yoke with an auxiliary magnet.