JPH03106526U - - Google Patents
Info
- Publication number
- JPH03106526U JPH03106526U JP1509290U JP1509290U JPH03106526U JP H03106526 U JPH03106526 U JP H03106526U JP 1509290 U JP1509290 U JP 1509290U JP 1509290 U JP1509290 U JP 1509290U JP H03106526 U JPH03106526 U JP H03106526U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- fixed shaft
- coil holder
- bearing
- wound around
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
Landscapes
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図はこの考案の実施例になる光ヘツド用ア
クチユエータの防塵構造を示す断面図、第２図お
よび第３図は実施例になる防塵構造の互いに異な
る取付状態を示す拡大図、第４図はこの考案の異
なる実施例を示す要部の拡大図、第５図はこの考
案の他の実施例を示す要部の拡大図、第６図は従
来のアクチユエータを簡略化して示す側断面図で
ある。
１……固定軸、２……軸受、３……コイルホル
ダ、４……対物レンズ、５……バランサ、６……
カバー、７Ａ，７Ｂ……窓、９……コイル、１１
……アクチユエータベース、１２……ゴムダンパ
ー、１３，１４……座、１６……本体壁、２０，
３０，４０……防塵傘、２１，４１……接着部、
２２……皿ねじ。
FIG. 1 is a cross-sectional view showing a dustproof structure of an optical head actuator according to an embodiment of this invention, FIGS. 2 and 3 are enlarged views showing different mounting states of the dustproof structure according to an embodiment, and FIG. 4 5 is an enlarged view of the main part showing a different embodiment of this invention, FIG. 5 is an enlarged view of the main part showing another embodiment of this invention, and FIG. 6 is a simplified side sectional view of a conventional actuator. be. 1...Fixed shaft, 2...Bearing, 3...Coil holder, 4...Objective lens, 5...Balancer, 6...
Cover, 7A, 7B... Window, 9... Coil, 11
... Actuator base, 12 ... Rubber damper, 13, 14 ... Seat, 16 ... Main body wall, 20,
30, 40... Dust-proof umbrella, 21, 41... Adhesive part,
22...Countersunk screw.
Claims (1)
が前記固定軸に対象に配された対物レンズおよび
バランサを備え、前記コイルホルダに巻装された
フオーカスコイルに作用する電磁力によつて前記
対物レンズの軸方向位置が制御され、前記コイル
ホルダに巻装されたトラツクコイルに作用する電
磁力によつて回転角度が制御されるとともに、前
記コイルホルダを光デイスク側から覆うカバーの
前記対物レンズおよびバランサに対応する部分に
窓を有する軸摺動回転形アクチユエータにおいて
、前記固定軸の頂部と前記カバーとの隙間にその
中心部が位置して前記軸受の端面を非接触で覆う
防塵傘を備えてなることを特徴とする光ヘツド用
アクチユエータの防塵構造。 A coil holder supported by a fixed shaft via a bearing is provided with an objective lens and a balancer disposed symmetrically to the fixed shaft, and the objective lens is moved by an electromagnetic force acting on a focus coil wound around the coil holder. The axial position of the lens is controlled, and the rotation angle is controlled by the electromagnetic force acting on the track coil wound around the coil holder, and the objective lens and A shaft-sliding rotary actuator having a window in a portion corresponding to the balancer, comprising a dustproof umbrella whose center portion is located in the gap between the top of the fixed shaft and the cover and covers the end surface of the bearing without contact. A dustproof structure for an actuator for an optical head, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1509290U JPH03106526U (en) | 1990-02-17 | 1990-02-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1509290U JPH03106526U (en) | 1990-02-17 | 1990-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03106526U true JPH03106526U (en) | 1991-11-05 |
Family
ID=31518417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1509290U Pending JPH03106526U (en) | 1990-02-17 | 1990-02-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03106526U (en) |
-
1990
- 1990-02-17 JP JP1509290U patent/JPH03106526U/ja active Pending