JPS6089617U

JPS6089617U - Objective lens support device for recording and reproducing optical disk memory devices

Info

Publication number: JPS6089617U
Application number: JP18129383U
Authority: JP
Inventors: 学小倉; 仲行　敏安
Original assignee: 三菱電機株式会社
Priority date: 1983-11-24
Filing date: 1983-11-24
Publication date: 1985-06-19

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図は従来の対物レンズ支持装置の１部を切欠いて内
部をボす斜視図、第２図ａ、　ｂは従来装置の主要部の
動作を説明する図、第３図ａはこの考案の一実施例の主
要部に係る断面図、第３図す、　ｃはこの考案の他の実
施例の主要部に係るそれぞれ縦断面図、横断面図である
。第１図において１はディスク、２は対物レンズ、４は支
軸、５は円筒、６，１１は永久磁石、７．１２はコイル
、１０．１３は磁性体のヨーク、９は駆動部支持バネで
、これら６，７．９及び１０で第１駆動機構を、９，１
１，１２及び１３で第２駆動機構を構成する。第３図に
おいて４、は支軸、５，１８はそれぞれ可動部である外
円筒と内円筒で連結して動き、１７はボールベアリング
である。なお各図中同一符号は同一または相当部分を示
すものとする。 −一一一一一一一〜〜− １ご第１図Fig. 1 is a perspective view of a conventional objective lens support device with a part cut away to reveal the inside, Fig. 2 a and b are diagrams explaining the operation of the main parts of the conventional device, and Fig. 3 a is a diagram of the device of this invention. Figures 3 and 3c are a longitudinal sectional view and a cross sectional view, respectively, of the main parts of another embodiment of this invention. In Fig. 1, 1 is a disk, 2 is an objective lens, 4 is a spindle, 5 is a cylinder, 6 and 11 are permanent magnets, 7.12 is a coil, 10.13 is a magnetic yoke, and 9 is a drive unit support spring. Then, these 6, 7.9 and 10 form the first drive mechanism, 9, 1
1, 12 and 13 constitute a second drive mechanism. In FIG. 3, 4 is a support shaft, 5 and 18 are movable parts, which are connected to each other by an outer cylinder and an inner cylinder, respectively, and move, and 17 is a ball bearing. Note that the same reference numerals in each figure indicate the same or corresponding parts. -111111～～- 1Figure 1

Claims

[Scope of utility model registration request]

A support shaft, a cylinder configured to be movable in the axial direction of the support shaft and rotatable around the support shaft and placed over the support shaft, a lens mount fixed to the cylinder and holding the lens, and the lens. a first drive mechanism that drives the pedestal in the axial direction;
An optical type having a second drive mechanism for rotationally driving the lens mount around a support shaft, characterized in that ball bearings are provided between the support shaft and the inner periphery of the cylinder, each of which abuts on both. Objective lens support device for recording and reproduction of disk memory devices.