JPS58139797U

JPS58139797U - magnetic circuit

Info

Publication number: JPS58139797U
Application number: JP3680682U
Authority: JP
Inventors: 浜田　博幸
Original assignee: パイオニア株式会社
Priority date: 1982-03-15
Filing date: 1982-03-15
Publication date: 1983-09-20

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図は従来の代表的磁気回路の断面図、第２図はこの
考案による磁気回路の断面図、第３図は第２図■−■線
に沿う拡大断面図、第４図はうず電流の発生の状態を示
す斜面図、第５図は従来のセンターポールにおけるうず
電流の発生の状態を゛示す斜面図、第６図は他の実施例
によるセンターポールの第３図相当断面図、第７図は第
６図■部拡大断面図である。１１・・・バックプレート、１２・・・マグネット、１
３・・・トラフフレート、１４・・・セン多−ボール、
１４ａ・・・ポール、１４ｂ・・・絶縁層、Ｇ・・・空
隙。Figure 1 is a sectional view of a typical conventional magnetic circuit, Figure 2 is a sectional view of a magnetic circuit based on this invention, Figure 3 is an enlarged sectional view taken along the line ■-■ in Figure 2, and Figure 4 is an eddy current. FIG. 5 is a perspective view showing the state of generation of eddy current in a conventional center pole. FIG. 6 is a cross-sectional view of a center pole according to another embodiment corresponding to FIG. FIG. 7 is an enlarged cross-sectional view of part (■) in FIG. 6. 11... Back plate, 12... Magnet, 1
3...Trough plate, 14... Sentai-ball,
14a...Pole, 14b...Insulating layer, G...Gap.

Claims

[Scope of utility model registration request]

In a magnetic circuit composed of a center pole, a magnet, a plate, an air gap, etc., the center pole is characterized by being composed of an aggregate of a plurality of columns made of magnetic materials that are electrically insulated from each other. magnetic circuit.