JPH0394669U

JPH0394669U -

Info

Publication number: JPH0394669U
Application number: JP15287389U
Authority: JP
Priority date: 1989-12-29
Filing date: 1989-12-29
Publication date: 1991-09-26
Anticipated expiration: 2004-12-29
Also published as: JP2551057Y2

Description

[Brief explanation of drawings]

第１図は本考案に係る光学ピツクアツプ装置の
支持機構の一構成例を一部破断して示す正面図、
第２図は支持機構の構成を示す平面図、第３図は
支持機構の構成を示す斜視図、第４図は支持機構
の要部となるローラ支持部材の構成を拡大して示
す分解斜視図、第５図はシヤフトピツチが変化し
たときの光学ブロツクの支持状態を示す平面図、
第６図はローラ支持部材の他の例を一部破断して
示す正面図である。第７図は従来の光学ピツクア
ツプ装置の支持機構の構成を示す平面図、第８図
はその平面図、第９図はシヤフトピツチが変動し
たときの光学ブロツクの支持状態を示す正面図で
ある。１……基準シヤフト、２……支持シヤフト、４
……光学ブロツク、５……光デバイス、６，７，
８，９……位置決め用ローラ、１０，１１……予
圧用ローラ、１２……ローラ支持部材、１３……
ローラホルダ、１４……ホルダー支持部材。 FIG. 1 is a partially cutaway front view showing an example of the structure of the support mechanism of the optical pickup device according to the present invention;
Fig. 2 is a plan view showing the structure of the support mechanism, Fig. 3 is a perspective view showing the structure of the support mechanism, and Fig. 4 is an exploded perspective view showing the structure of the roller support member which is the main part of the support mechanism. , FIG. 5 is a plan view showing the support state of the optical block when the shaft pitch changes;
FIG. 6 is a partially cutaway front view of another example of the roller support member. FIG. 7 is a plan view showing the structure of a support mechanism of a conventional optical pickup device, FIG. 8 is a plan view thereof, and FIG. 9 is a front view showing the state in which the optical block is supported when the shaft pitch changes. 1...Reference shaft, 2...Support shaft, 4
...Optical block, 5...Optical device, 6,7,
8, 9... Positioning roller, 10, 11... Preload roller, 12... Roller support member, 13...
Roller holder, 14...Holder support member.

Claims

[Claims for Utility Model Registration] A reference shaft, a support shaft disposed parallel to the reference shaft, and at least an objective lens attached thereto, supported between the shafts so as to be movable in the axial direction of the reference shaft. At least the optical block of the optical pickup device is attached to one side of the optical block with its rotation axis inclined at a predetermined angle relative to the moving direction of the optical block, and the reference shaft is held between the circumferential surfaces of a pair of rollers. two sets of positioning rollers that are brought into contact with each other so as to be in contact with each other; and an elastic displacement member that is attached to the other side of the optical block opposite to the side on which the positioning rollers are attached and that is elastically displaced in a direction substantially perpendicular to the axial direction of the support shaft. a roller support member having a roller support member, and a roller support member that is attached to the roller support member with rotational axes inclined at a predetermined angle relative to the moving direction of the optical block, so that the support shaft is sandwiched between the circumferential surfaces of the pair of rollers. A support mechanism for an optical pickup device, comprising a pair of preload rollers brought into contact with an optical pickup device.