JPH0758552B2 - Optical pickup device - Google Patents

Optical pickup device

Info

Publication number
JPH0758552B2
JPH0758552B2 JP63051142A JP5114288A JPH0758552B2 JP H0758552 B2 JPH0758552 B2 JP H0758552B2 JP 63051142 A JP63051142 A JP 63051142A JP 5114288 A JP5114288 A JP 5114288A JP H0758552 B2 JPH0758552 B2 JP H0758552B2
Authority
JP
Japan
Prior art keywords
damper
objective lens
optical pickup
pickup device
fixing pin
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.)
Expired - Fee Related
Application number
JP63051142A
Other languages
Japanese (ja)
Other versions
JPH01224932A (en
Inventor
隆 星野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP63051142A priority Critical patent/JPH0758552B2/en
Publication of JPH01224932A publication Critical patent/JPH01224932A/en
Publication of JPH0758552B2 publication Critical patent/JPH0758552B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Optical Recording Or Reproduction (AREA)

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は光ディスク装置または光学式記録再生装置等
に使用する光ピックアップ装置に関するものである。
The present invention relates to an optical pickup device used for an optical disk device, an optical recording / reproducing device, or the like.

[従来の技術] 第3図は従来の光ピックアップ装置のアクチュエータ部
の一部を切欠いて示す斜視図であり、第3図において、
(1)はベース、(2)はベース(1)に立てた支軸、
(3)は対物レンズ、(4)は偏心位置に対物レンズ
(3)を保持し支軸(2)に回動自在、軸線方向移動自
在に支持された対物レンズホルダ、(5)は支軸(2)
を挟んで対物レンズホルダ(4)の両側に設けられたト
ラック制御用のコイル、つまり、対物レンズホルダに回
動力を付与するコイル、(6)はコイル(5)に対向し
てベース(1)上に設けられた永久磁石、(7)は対物
レンズホルダ(4)を中立位置に付勢するダンパー、
(8)はダンパー(7)を固定するようにベース(1)
上に立てた固定ピン、(9)はベース(1)上に配設さ
れた前記各部材を覆うアクチュエータカバーである。
[Prior Art] FIG. 3 is a perspective view showing a notched part of an actuator portion of a conventional optical pickup device. In FIG.
(1) is a base, (2) is a support shaft that stands on the base (1),
(3) is an objective lens, (4) is an objective lens holder that holds the objective lens (3) in an eccentric position and is supported by a spindle (2) so as to be rotatable and axially movable, and (5) is a spindle. (2)
Track control coils provided on both sides of the objective lens holder (4) sandwiching it, that is, a coil for imparting rotational force to the objective lens holder, (6) faces the coil (5), and the base (1) A permanent magnet provided above, (7) a damper for urging the objective lens holder (4) to a neutral position,
(8) is the base (1) so as to fix the damper (7)
A fixing pin, which is erected on the upper side, (9) is an actuator cover which covers the above-mentioned members arranged on the base (1).

上記ダンパー(7)はその両端部が対物レンズホルダ
(3)に固定され、中間部が固定ピン(8)に固定され
ている。第4図、第5図は上記固定ピン(8)に対する
ダンパー(7)の固定構成を示すもので、第4図は固定
ピン(8)に形成された細径首部(10)にダンパー
(7)の中間部に形成したコ字型凹部(7a)を引掛け固
定している。また、第5図はダンパー(7)の中間部に
設けた支持体(11)の係合穴(12)を、固定ピン(8)
の先端に形成された細径部(13)に嵌合固定している。
Both ends of the damper (7) are fixed to the objective lens holder (3), and an intermediate part is fixed to the fixing pin (8). FIGS. 4 and 5 show the fixing structure of the damper (7) to the fixing pin (8). FIG. 4 shows the damper (7) attached to the thin neck portion (10) formed on the fixing pin (8). ), The U-shaped recess (7a) formed in the middle part is hooked and fixed. Further, FIG. 5 shows that the engaging hole (12) of the support body (11) provided in the middle portion of the damper (7) is fixed to the fixing pin (8).
It is fitted and fixed to a small diameter portion (13) formed at the tip of the.

次に動作について説明する。対物レンズ(3)を保持し
た対物レンズホルダ(4)は、焦点制御コイル(図示せ
ず)およびトラック制御コイル(5)の通電によって軸
線方向(集光方向)への駆動および回動(トラック方
向)駆動が行われ、各コイルに対する通電が終了する
と、ダンパー(7)の復元力によって自動的に中点位置
に復元する。
Next, the operation will be described. The objective lens holder (4) holding the objective lens (3) is driven and rotated in the axial direction (focusing direction) (track direction) by energization of a focus control coil (not shown) and a track control coil (5). ) When the driving is performed and the energization of each coil ends, the damper (7) automatically restores to the midpoint position by the restoring force.

[発明が解決しようとする課題] 従来の光ピックアップ装置は以上のように構成されてい
るので、固定ピンに対するダンパーの固定構成として、
第4図のような構成では、組立性に問題があり、第5図
のような構成では、組立性は良いが対物レンズホルダの
軸線方向への駆動によって固定ピンから抜ける心配があ
り、取付後に接着等の必要があるなどの課題があった。
[Problems to be Solved by the Invention] Since the conventional optical pickup device is configured as described above, as a fixing configuration of the damper to the fixing pin,
The structure shown in FIG. 4 has a problem in assembling, and the structure shown in FIG. 5 has a good assembling property, but there is a concern that the objective lens holder may come off from the fixing pin when driven in the axial direction. There were problems such as the need for adhesion.

この発明は上記のような課題を解決するためになされた
もので、ダンパーの組立性が良く、取付後におけるダン
パーの固定ピンからの抜け発生がない光ピックアップ装
置を得ることを目的とする。
The present invention has been made in order to solve the above problems, and an object thereof is to obtain an optical pickup device in which the damper is easily assembled and the damper does not come off from the fixing pin after mounting.

[課題を解決するための手段] この発明に係る光ピックアップ装置は、固定ピン先端の
細径部に係合穴を嵌合させたダンパーを抜け止め的に押
える押え部をアクチュエータカバーの内側に突設したも
のである。
[Means for Solving the Problems] In the optical pickup device according to the present invention, a holding portion that presses the damper in which the engaging hole is fitted in the small diameter portion of the fixing pin to prevent the damper from coming off is projected inside the actuator cover. It was set up.

[作用] この発明におけるアクチュエータカバーは、その内側に
突設した押え部により、ダンパーを押えて固定ピンから
の抜けを防止するようにしたことにより、ダンパー形状
およびその組付けが簡素化される。
[Operation] In the actuator cover according to the present invention, the pressing portion that is provided on the inner side of the actuator cover presses the damper to prevent the damper cover from coming off the fixing pin, so that the shape of the damper and its assembly are simplified.

[実施例] 以下、この発明の一実施例を図について説明する。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

第1図において、(14)はダンパー(7)の一端部に設
けた支持体、(15)は支持体(14)に上下貫通して設け
た係合穴であり、この係合穴(15)を固定ピン(8)の
先端に設けた細径部(13)に嵌合固定するもので、前記
第3図と同一の他の構成部分には同一符号を付して説明
を省略する。
In FIG. 1, (14) is a support body provided at one end of the damper (7), and (15) is an engagement hole vertically penetrating the support body (14). ) Is fitted and fixed to a small-diameter portion (13) provided at the tip of the fixing pin (8), and the same reference numerals are given to the same components as those in FIG. 3 and the description thereof will be omitted.

第2図はアクチュエータカバー(9)を取付けた状態の
一部の断面図を示すもので、第2図において、(16)は
アクチュエータカバー(9)の内側に突設したダンパー
(7)の押え部である。
FIG. 2 is a partial cross-sectional view showing a state where the actuator cover (9) is attached. In FIG. 2, (16) is a retainer for a damper (7) projecting inside the actuator cover (9). It is a department.

次に上記実施例におけるダンパー(7)の組付けについ
て説明する。ダンパー(7)は対物レンズホルダ(4)
の側面に取付けられており、この対物レンズホルダ
(4)を支軸(2)に装着する際、ダンパー(7)の一
端部に設けた支持体(14)の係合穴(15)を固定ピン
(8)の細径部(13)に嵌合する。ついで、対物レンズ
等を覆うようにベース(1)にアクチュエータカバー
(9)を取付け、このアクチュエータカバー(9)の押
え部(16)で上記支持体(14)の上面を抜け止め的に押
え込むようにしたものである。
Next, the assembly of the damper (7) in the above embodiment will be described. The damper (7) is the objective lens holder (4)
When the objective lens holder (4) is attached to the support shaft (2), the engaging hole (15) of the support body (14) provided at one end of the damper (7) is fixed. Fit into the small diameter portion (13) of the pin (8). Then, the actuator cover (9) is attached to the base (1) so as to cover the objective lens and the like, and the pressing portion (16) of the actuator cover (9) presses the upper surface of the support (14) so as to prevent it from coming off. It was done like this.

[発明の効果] 以上のように、この発明によれば、その一端部に設けた
支持体の係合穴を固定ピンの先端に形成した細径部に嵌
合させ、この支持体をアクチュエータカバーの内側に突
設した押え部で抜け止め的に押圧するように構成したの
で、固定ピンの形状を簡素化でき、この固定ピンに対す
るダンパーの組立が容易になり、ダンパーの固定ピンか
らの抜けを確実に防止できるという効果がある。
[Advantages of the Invention] As described above, according to the present invention, the engagement hole of the support provided at one end of the support is fitted into the small-diameter portion formed at the tip of the fixing pin, and the support is covered with the actuator cover. Since it is configured to press the retaining part that protrudes inward of the retainer to prevent it from coming off, the shape of the fixing pin can be simplified, the damper can be easily assembled to the fixing pin, and the damper can be removed from the fixing pin. There is an effect that it can be surely prevented.

【図面の簡単な説明】[Brief description of drawings]

第1図はこの発明の一実施例による光ピックアップ装置
を示すアクチュエータ部の斜視図、第2図はその実施例
におけるダンパー固定部の断面図、第3図は従来の光ピ
ックアップ装置におけるアクチュエータ部の斜視図、第
4図及び第5図はその従来装置におけるダンパーの固定
ピンへの取付構成を示した斜視図である。 図において、(1)はベース、(2)は支軸、(4)は
対物レンズホルダ、(7)はダンパー、(8)は固定ピ
ン、(9)はアクチュエータカバー、(13)は細径部、
(14)は支持体、(15)は係合穴、(16)は押え部であ
る。 尚、図中、同一符号は同一又は相当部分を示す。
FIG. 1 is a perspective view of an actuator portion showing an optical pickup device according to an embodiment of the present invention, FIG. 2 is a sectional view of a damper fixing portion in the embodiment, and FIG. 3 is a actuator portion in a conventional optical pickup device. FIGS. 4 and 5 are perspective views showing a mounting structure of a damper to a fixing pin in the conventional device. In the figure, (1) is a base, (2) is a spindle, (4) is an objective lens holder, (7) is a damper, (8) is a fixing pin, (9) is an actuator cover, and (13) is a small diameter. Department,
(14) is a support, (15) is an engaging hole, and (16) is a holding part. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】ベースに立設した支軸に軸線方向移動自在
および回転自在に支持された対物レンズホルダと、前記
ベースに設けた固定ピンに取付けられ前記対物レンズホ
ルダを中立位置に復帰支持するダンパーと、前記対物レ
ンズホルダおよびダンパー等を覆うアクチュエータカバ
ーとを有する光ピックアップ装置において、前記固定ピ
ン先端の細径部に係合穴を嵌合させた前記ダンパーを抜
け止め的に押さえる押え部を前記アクチュエータカバー
の内側に突設したことを特徴とする光ピックアップ装
置。
1. An objective lens holder movably and rotatably supported by a support shaft erected on a base in an axial direction and a fixing pin provided on the base to return and support the objective lens holder to a neutral position. In an optical pickup device having a damper and an actuator cover that covers the objective lens holder, the damper, and the like, a holding portion that holds the damper in which an engaging hole is fitted in a small-diameter portion of the tip of the fixing pin is retained. An optical pickup device, wherein the optical pickup device is provided so as to project inside the actuator cover.
JP63051142A 1988-03-04 1988-03-04 Optical pickup device Expired - Fee Related JPH0758552B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63051142A JPH0758552B2 (en) 1988-03-04 1988-03-04 Optical pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63051142A JPH0758552B2 (en) 1988-03-04 1988-03-04 Optical pickup device

Publications (2)

Publication Number Publication Date
JPH01224932A JPH01224932A (en) 1989-09-07
JPH0758552B2 true JPH0758552B2 (en) 1995-06-21

Family

ID=12878574

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63051142A Expired - Fee Related JPH0758552B2 (en) 1988-03-04 1988-03-04 Optical pickup device

Country Status (1)

Country Link
JP (1) JPH0758552B2 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61114525U (en) * 1984-12-27 1986-07-19
JPH0739058Y2 (en) * 1985-08-30 1995-09-06 パイオニア株式会社 Pickup device in optical information recording / reproducing apparatus

Also Published As

Publication number Publication date
JPH01224932A (en) 1989-09-07

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