JPS61145330U

JPS61145330U -

Info

Publication number: JPS61145330U
Application number: JP2600685U
Authority: JP
Priority date: 1985-02-25
Filing date: 1985-02-25
Publication date: 1986-09-08
Anticipated expiration: 2000-02-25
Also published as: JPH0728580Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す斜視図であり
、第２図はその分解斜視図であり、第３図は側断
面図である。第４図は支持部材のヨークへの取付
状態の他の例を示す斜視図である。第５図は本考
案の他の実施例を示す斜視図であり、第６図はそ
の組立て状態を示す斜視図であり、第７図はこの
実施例に用いられる支持部材を示すものであつて
、第７図Ａはその正面図であり、第７図Ｂは平面
図であり、第７図Ｃは側面図である。第８図は対
物レンズの光軸位置調整状態を示す平面図である
。第９図は対物レンズの光軸調整機構を有する支
持部材の他の例を示す斜視図であり、第１０図は
上記支持部材を有するものにおいて対物レンズの
光軸位置調整状態を示す平面図である。第１１図
は本考案のさらに他の実施例を示す斜視図であり
、第１２図は本考案のさらに他の実施例を示す斜
視図であり、第１３図は本考案のさらに他の実施
例を示す斜視図である。第１４図は板バネの支持
部材への取付け構造の他の例を示す分解斜視図で
あり、第１５図はその組立て状態を示す斜視図で
ある。第１６図には従来例を示す斜視図であり、
第１７図はその側断面図である。２１……取付け基板、２２……第１のヨーク、
２３……第２のヨーク、２８……マグネツト、３
３……対物レンズ、３６……ボビン、３８……フ
オーカス駆動コイル、３９……トラツキング駆動
コイル、４０……支持部材、４１……板バネ、４
２……板バネ取付け部、４５……嵌合片、４６…
…ヒンジ部。 FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a side sectional view. FIG. 4 is a perspective view showing another example of how the support member is attached to the yoke. Fig. 5 is a perspective view showing another embodiment of the present invention, Fig. 6 is a perspective view showing its assembled state, and Fig. 7 shows a support member used in this embodiment. , FIG. 7A is a front view, FIG. 7B is a plan view, and FIG. 7C is a side view. FIG. 8 is a plan view showing the optical axis position adjustment state of the objective lens. FIG. 9 is a perspective view showing another example of a support member having an optical axis adjustment mechanism for an objective lens, and FIG. 10 is a plan view showing a state in which the optical axis position of an objective lens is adjusted in a support member having the above-mentioned support member. be. FIG. 11 is a perspective view showing still another embodiment of the present invention, FIG. 12 is a perspective view showing still another embodiment of the present invention, and FIG. 13 is a perspective view showing still another embodiment of the present invention. FIG. FIG. 14 is an exploded perspective view showing another example of the structure for attaching the leaf spring to the support member, and FIG. 15 is a perspective view showing the assembled state. FIG. 16 is a perspective view showing a conventional example,
FIG. 17 is a side sectional view thereof. 21... Mounting board, 22... First yoke,
23...Second yoke, 28...Magnet, 3
3... Objective lens, 36... Bobbin, 38... Focus drive coil, 39... Tracking drive coil, 40... Support member, 41... Leaf spring, 4
2...Plate spring attachment part, 45...Fitting piece, 46...
...Hinge part.

Claims

[Scope of Claim for Utility Model Registration] A yoke to which a magnet is attached, a substrate to which this yoke is fixed, a bobbin to which at least an objective lens is attached facing an optical recording medium, and this bobbin to be used as an objective lens. a drive coil that is driven in the optical axis direction of the lens and a direction perpendicular to the optical axis of the objective lens, two leaf springs that support the bobbin, and a hinge part that is displaced in the direction orthogonal to the optical axis of the objective lens. and a support member fixed to the substrate, two surfaces of the bobbin perpendicular to the optical axis of the objective lens are supported by the two leaf springs, and these leaf springs are fixed to the support member. An optical pickup device.