JPS5999224U

JPS5999224U - Optical information reading device

Info

Publication number: JPS5999224U
Application number: JP19890882U
Authority: JP
Inventors: 栗原　俊彦
Original assignee: Pioneer Corp
Current assignee: Pioneer Corp
Priority date: 1982-12-23
Filing date: 1982-12-23
Publication date: 1984-07-05
Also published as: JPS632998Y2

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来例の光学式情報読取装置の縦断面図、第２
図は本考案に係る光学式情報読取装置の縦断面図で、第
３図は同装置の動作時の半裁断面図、第４図は磁束の分
布を示す要部縦断面図、第５図と第６図はそれぞれ他実
施例を示す要部縦断面図、第７図は使用状態を示す分解
斜視図である。１・・・記録媒体、２・・・対物レンズ、３・・・磁気
回路、４・・・ポール部、４ａ・・・上面、５・・・ポ
ールヨーク、６・・・プレート、６ａ・・・上面、７・
・・マグネット、８・・・磁気ギャップ、９・・・摺動
部、１０・・・ボビン、１２・・・コイル、１３・・・
ジヨイント部。Fig. 1 is a vertical cross-sectional view of a conventional optical information reading device;
The figure is a longitudinal sectional view of the optical information reading device according to the present invention, FIG. 3 is a half-cut sectional view of the device in operation, FIG. FIG. 6 is a vertical cross-sectional view of a main part showing other embodiments, and FIG. 7 is an exploded perspective view showing the state of use. DESCRIPTION OF SYMBOLS 1... Recording medium, 2... Objective lens, 3... Magnetic circuit, 4... Pole part, 4a... Upper surface, 5... Pole yoke, 6... Plate, 6a...・Top surface, 7・
... Magnet, 8... Magnetic gap, 9... Sliding part, 10... Bobbin, 12... Coil, 13...
joint part.

Claims

[Claims for Utility Model Registration] 1. In an optical information reading device including a magnetic circuit constituting a magnetic gap and a coil disposed in the magnetic gap, the direction of magnetic flux flowing through the magnetic gap and the winding of the coil In the direction perpendicular to the linear direction, the dimensions of the part of the member constituting the magnetic circuit surrounded by the coil are larger than the dimensions of the part of the member constituting the magnetic circuit surrounded by the coil. An optical information reading device that is characterized by its great features. 2 The above magnetic circuit is an external magnetic type or an internal magnetic type magnetic circuit,
A utility model characterized in that one of the pole yoke, pole piece, and magnet surrounded by the coil is set higher than the upper surface of the plate or yoke surrounding the coil. Optical % formula % described in registered claim 1