JPH035223U

JPH035223U -

Info

Publication number: JPH035223U
Application number: JP6474889U
Authority: JP
Priority date: 1989-06-02
Filing date: 1989-06-02
Publication date: 1991-01-18

Description

[Brief explanation of drawings]

第１図ないし第３図は本考案の第一の実施例を
示すもので、第１図は縦断側面図、第２図は斜視
図、第３図は分解斜視図、第４図ないし第７図は
本考案の第二の実施例に係るもので、防塵部材の
各例を示す一部の縦断側面図、第８図ないし第１
０図は本考案の第三の実施例を示すもので、第８
図は分解斜視図、第９図は縦断側面図、第１０図
は支持部材の平面図、第１１図ないし第１３図は
本考案の第四の実施例を示すもので、第１１図は
分解斜視図、第１２図は縦断側面図、第１３図は
支持部材の平面図、第１４図及び第１５図は従来
例を示すもので、第１４図は分解斜視図、第１５
図は縦断側面図である。１…支持部材、３…可動部材、５…対物レンズ
、８…トラツキング駆動部、１１…フオーカシン
グ駆動部、１３…記録媒体、１４…カバー、１６
…覆い面、１７…周壁、１９…環状壁、２０〜２
３…防塵部材、２４，２５…環状壁。 Figures 1 to 3 show a first embodiment of the present invention, in which Figure 1 is a vertical side view, Figure 2 is a perspective view, Figure 3 is an exploded perspective view, and Figures 4 to 7. The figures relate to the second embodiment of the present invention, and include longitudinal cross-sectional side views of parts of each example of the dustproof member, and figures 8 to 1.
Figure 0 shows the third embodiment of the present invention.
The figure is an exploded perspective view, Figure 9 is a vertical side view, Figure 10 is a plan view of the support member, Figures 11 to 13 show a fourth embodiment of the present invention, and Figure 11 is an exploded view. FIG. 12 is a vertical side view, FIG. 13 is a plan view of the support member, FIGS. 14 and 15 show a conventional example, FIG. 14 is an exploded perspective view, and FIG. 15 is a perspective view.
The figure is a longitudinal side view. DESCRIPTION OF SYMBOLS 1... Support member, 3... Movable member, 5... Objective lens, 8... Tracking drive part, 11... Focusing drive part, 13... Recording medium, 14... Cover, 16
...Covering surface, 17...Peripheral wall, 19...Annular wall, 20-2
3... Dustproof member, 24, 25... Annular wall.

Claims

[Claims for Utility Model Registration] 1. A movable member that holds an objective lens facing a rotating disc-shaped recording medium, and a movable member that is rotatable around an axis parallel to the optical axis of the objective lens. a support member that holds the movable member slidably in the direction; a tracking drive unit that drives the movable member in the rotational direction; a focusing drive unit that drives the movable member in the axial direction; and a movable member other than the objective lens. An optical pickup comprising: a cover that covers a surface facing the recording medium; and a cover that is fixedly provided to the movable member and has a peripheral wall that surrounds the movable member. 2. A covering surface that covers the surface facing the recording medium except for the objective lens, and a peripheral wall extending from the periphery of the covering surface to the opposite side of the recording medium are integrally formed on a movable member, and the inner periphery of the peripheral wall is 2. An optical pickup according to claim 1, wherein said support member is provided with an annular wall surrounded by a surface. 3. A covering surface that covers the surface facing the recording medium except for the objective lens, and a peripheral wall extending from the periphery of the covering surface to the opposite side of the recording medium are integrally formed on a movable member, and the outer periphery of the peripheral wall is 2. The optical pickup according to claim 1, wherein said support member is provided with an annular wall surrounding the surface. 4. The optical pickup according to claim 1, 2 or 3, characterized in that a dustproof member is interposed between the peripheral wall and the support member.