JPS62142718U

JPS62142718U -

Info

Publication number: JPS62142718U
Application number: JP3088286U
Authority: JP
Priority date: 1986-03-03
Filing date: 1986-03-03
Publication date: 1987-09-09

Description

[Brief explanation of the drawing]

第１図〜第４図は本考案の実施例を示すもので
あり、第１図は光学式ピツクアツプの補正駆動装
置を示す平面図、第２図は第１図の側面図、第３
図はトラツキングばねを示す平面図、第４図は第
３図の側面図、第５図は従来技術を説明するため
の光学式ピツクアツプの補正駆動装置の原理を示
す平面図、第６図は第５図の側面図である。１１…対物レンズ、１２…可動部材、１３…フ
オーカスばね（板ばね）、１４…回動フレーム、
１５…回転軸、２１，２２…フオーカス方向の駆
動力を発揮する駆動機構、２５ａ〜２５ｄ，２３
，２４…トラツキング方向の駆動力を発揮する駆
動機構、３０…ゴムと金属製の板ばねを一体化さ
せて形成したトラツキングばね、３０ａ…ゴム、
３０ｂ…板ばね、３１…腕部、３２…連結金具、
３３…取付金具、Ｄ…デイスク。 1 to 4 show an embodiment of the present invention, in which FIG. 1 is a plan view showing a correction drive device for an optical pickup, FIG. 2 is a side view of FIG. 1, and FIG.
4 is a side view of FIG. 3, FIG. 5 is a plan view showing the principle of an optical pickup correction drive device for explaining the prior art, and FIG. 5 is a side view of FIG. 5; FIG. 11... Objective lens, 12... Movable member, 13... Focus spring (plate spring), 14... Rotating frame,
15... Rotating shaft, 21, 22... Drive mechanism that exerts driving force in the focus direction, 25a to 25d, 23
, 24... Drive mechanism that exerts a driving force in the tracking direction, 30... Tracking spring formed by integrating rubber and metal leaf spring, 30a... Rubber,
30b...Plate spring, 31...Arm portion, 32...Connecting metal fittings,
33...Mounting bracket, D...Disk.

Claims

[Claims for Utility Model Registration] (1) A movable member holding an objective lens facing the disk is supported by a focus spring so as to be movable in the optical axis direction of the objective lens, and In a correction drive device for an optical pickup, in which a rotating frame having a fixed base end is rotatably supported by a rotating shaft provided parallel to the optical axis, there is a space between the base and the movable member. , a tracking spring for maintaining the movable member at a neutral position in the rotation direction is provided, and the tracking spring is formed by integrating rubber and a metal plate spring, and the plate spring is 1. A correction drive device for an optical pickup, characterized in that a plate thickness direction is oriented in the optical axis direction of an objective lens, and a width dimension direction is oriented in a rotating direction of a movable member. (2) The correction drive device for an optical pickup according to claim 1, wherein the tracking spring is formed by inserting a metal plate spring into rubber. (3) The correction drive device for an optical pickup according to claim 1, wherein the tracking spring is formed by bonding rubber and a metal leaf spring.