JPH1196572A - Support structure for objective lens of optical pickup - Google Patents

Support structure for objective lens of optical pickup

Info

Publication number
JPH1196572A
JPH1196572A JP26207697A JP26207697A JPH1196572A JP H1196572 A JPH1196572 A JP H1196572A JP 26207697 A JP26207697 A JP 26207697A JP 26207697 A JP26207697 A JP 26207697A JP H1196572 A JPH1196572 A JP H1196572A
Authority
JP
Japan
Prior art keywords
wire
objective lens
damper material
damper
vibration
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
Application number
JP26207697A
Other languages
Japanese (ja)
Inventor
Nobuaki Yokoo
信昭 横尾
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.)
Denso Ten Ltd
Original Assignee
Denso Ten Ltd
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 Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP26207697A priority Critical patent/JPH1196572A/en
Publication of JPH1196572A publication Critical patent/JPH1196572A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PROBLEM TO BE SOLVED: To simply fit a wire and inject damper material and to eliminate deterioration in the damping performance of the damper material by providing a narrow width slit on a side being in contact with the outside of a wire fitting recessed part supporting an objective lens. SOLUTION: Opening parts 12 consisting of the narrow width slit for inserting the wire and injecting the damper material are provided on the side surfaces of the recessed parts 11 holding the damper material corresponding to the wire position on a plastic damper holder 1 elastically and closely supporting the wire connecting the objective lens onto its tip to a fixed part. The wire is inserted from the opening part 12 into the recessed parts 11, and after it is soldered to lands of notched parts 22 of a printed circuit board 2, the damper material of silicone resin is injected/filled up from the opening parts 12 into the periphery of the wires in the recessed parts 11. Thus, injecting work becomes easy, and the matter that the damper material escapes from the opening parts 12 by the vibration of the wires, and a space occurs between the damper material and the wires are prevented, and adhesiveness is kept, and a damping effect is kept.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、光ディスク再生装
置に使用される光ピックアップの対物レンズの支持構造
に関する。
The present invention relates to a support structure for an objective lens of an optical pickup used in an optical disk reproducing apparatus.

【0002】[0002]

【従来の技術】図5は光ディスク再生装置のサーボ方法
を説明するための図で、(a)は要部のシステム構成
図、(b)は対物レンズ可動部を示す断面図である。図
6は従来の光ピックアップ用対物レンズの支持構造を説
明するための図で、(a)はダンパホルダの斜視図、
(b)はダンパ材注入部のA矢視図、(c)はダンパ材
の注入状態を示す斜視図、(d)はダンパ材の注入状態
を示すB−B断面図である。以下、図に従って説明す
る。
2. Description of the Related Art FIGS. 5A and 5B are views for explaining a servo method of an optical disk reproducing apparatus. FIG. 5A is a system configuration diagram of a main part, and FIG. 5B is a sectional view showing a movable part of an objective lens. 6A and 6B are views for explaining a conventional structure for supporting an objective lens for an optical pickup. FIG. 6A is a perspective view of a damper holder.
(B) is a view of arrow A of the damper material injection section, (c) is a perspective view showing a state of injection of the damper material, and (d) is a BB cross-sectional view showing an injection state of the damper material. Hereinafter, description will be made with reference to the drawings.

【0003】光ディスク再生装置では光ディスク上に記
録された情報を読み取るために光ビームを光ディスクの
記録信号であるピット上に結像(フォーカシング)さ
せ、且つ正確にピット上を追跡(トラッキング)させる
必要がある。そこで、光ディスクからの反射光(出力信
号)を基に補正すべき値を算出し、この値に応じて対物
レンズを光ディスクに対して垂直方向に移動させるフォ
ーカシングコイル及び半径方向に移動させるトラッキン
グコイルに流す電流を制御して、常に光ビームがピット
上に結像し、且つ正確にピット上を追跡できるように光
ビームの照射位置を制御するフォーカスサーボ、トラッ
キングサーボ方法が採られている。そして、対物レンズ
は移動可能にワイヤで懸架されているために、外部から
の振動により異常に共振することのないようにワイヤの
振動を抑制する必要がある。
In an optical disk reproducing apparatus, in order to read information recorded on an optical disk, it is necessary to form (focus) a light beam on a pit, which is a recording signal of the optical disk, and to accurately track the pit. is there. Therefore, a value to be corrected is calculated based on the reflected light (output signal) from the optical disc, and a focusing coil for moving the objective lens in a direction perpendicular to the optical disc and a tracking coil for moving in the radial direction in accordance with the calculated value. Focus servo and tracking servo methods are employed in which a current flowing is controlled so that a light beam always forms an image on a pit and an irradiation position of the light beam is controlled so that the pit can be accurately tracked. Since the objective lens is movably suspended by the wire, it is necessary to suppress the vibration of the wire so as not to abnormally resonate due to external vibration.

【0004】7は光ビームをコンパクトディスクや光磁
気ディスク等のデータが記録された光ディスク9のピッ
ト上に結像させ、且つ正確にピット上を追跡させるため
の光学系で、光ディスク9上に光ビームを照射するレー
ザダイオード74、レーザダイオード74からの光を平
行光線にするコリメータレンズ73、光路を変更するミ
ラー76、光ディスク9の反射面に光ビームの焦点を合
わせる(結像させる)対物レンズ可動部71、光ディス
ク9からの信号を検出するフォトダイオード75から構
成される。8は対物レンズ71cを前後、左右に移動さ
せて光ビームを光ディスク9上で常に結像させ、且つ正
確にピット上を追跡するためのサーボ回路部で、結像状
態との差を示すエラー信号を検出するエラー検出回路8
1及びエラー信号を基に制御信号であるサーボ信号を出
力するサーボ信号回路82で構成される。91は光ディ
スク9を所定の線速度で回転させるモータである。
[0004] Reference numeral 7 denotes an optical system for forming a light beam on a pit of an optical disk 9 on which data is recorded, such as a compact disk or a magneto-optical disk, and for accurately tracking the pit. A laser diode 74 for irradiating the beam, a collimator lens 73 for converting the light from the laser diode 74 into a parallel beam, a mirror 76 for changing the optical path, and a movable objective lens for focusing (imaging) the light beam on the reflection surface of the optical disk 9. The unit 71 includes a photodiode 75 for detecting a signal from the optical disk 9. Numeral 8 denotes a servo circuit for moving the objective lens 71c back and forth, right and left so that the light beam always forms an image on the optical disk 9 and accurately tracks the pits. Error detection circuit 8 for detecting
1 and a servo signal circuit 82 that outputs a servo signal as a control signal based on the error signal. Reference numeral 91 denotes a motor for rotating the optical disk 9 at a predetermined linear speed.

【0005】対物レンズ可動部71は、対物レンズ71
cと、サーボ信号回路82からの信号により対物レンズ
71cを前後方向に移動させるフォーカスコイル71a
及び半径方向に移動させるトラッキングコイル71bと
から構成されている。そして、対物レンズ可動部71は
弾性を有しプリント基板2に半田46により固定された
4本のワイヤ3により支持されている。また4本のワイ
ヤ3はダンパホルダ6の側面に設けられた切欠部61を
通っており、この切欠部61に注入された振動を吸収す
るシリコン等のダンパ材41によりワイヤ3の不要振動
が減衰されるようになっている。2は4本のワイヤ3を
半田等により固定するプリント基板である。
[0005] The objective lens movable section 71 includes an objective lens 71.
and a focus coil 71a for moving the objective lens 71c back and forth in accordance with a signal from the servo signal circuit 82
And a tracking coil 71b that moves in the radial direction. The objective lens movable section 71 has elasticity and is supported by four wires 3 fixed to the printed circuit board 2 by solder 46. The four wires 3 pass through notches 61 provided on the side surface of the damper holder 6, and unnecessary vibrations of the wires 3 are attenuated by a damper material 41 such as silicon which absorbs the vibration injected into the notches 61. It has become so. Reference numeral 2 denotes a printed circuit board on which the four wires 3 are fixed by soldering or the like.

【0006】つまり、対物レンズ可動部71は外部から
の衝撃や、サーボ信号によって振動し、その振動はワイ
ヤ3に伝達され、ワイヤ3は切欠部61内で動くが、充
填されている弾性体のダンパ材41により振動が抑制さ
れる。また、別の方法として、ワイヤをダンパホルダに
設けられた貫通孔(孔側面は開放されていない)に通
し、貫通孔内に注入されたダンパ材によりワイヤの振動
を吸収する方法もある。
That is, the objective lens movable portion 71 vibrates due to an external impact or a servo signal, and the vibration is transmitted to the wire 3, and the wire 3 moves in the cutout portion 61. Vibration is suppressed by the damper material 41. As another method, there is a method in which a wire is passed through a through hole (a hole side surface is not opened) provided in a damper holder, and vibration of the wire is absorbed by a damper material injected into the through hole.

【0007】[0007]

【発明が解決しようとする課題】従来のようなダンパホ
ルダ6の側面に開口部61を設ける構造では、ワイヤ3
の組立作業が簡単になるが、ワイヤ3の振動動作により
ダンパ材41が開口部61から外部に押し拡げられてワ
イヤ3周辺に空洞ができ、ダンパ材41の振動抑制性能
が低下するという問題がある。
In the conventional structure in which the opening 61 is provided on the side surface of the damper holder 6, the wire 3
However, the vibration operation of the wire 3 causes the damper member 41 to be pushed out from the opening 61 to form a cavity around the wire 3, and the vibration suppression performance of the damper member 41 is reduced. is there.

【0008】また、ダンパホルダに貫通孔を設ける構造
では、ダンパ材は安定に保持されるが貫通孔にワイヤを
通す必要がある。また、ダンパ材の注入方向がワイヤの
架張方向と同じで、ワイヤにダンパ材注入用ノズルを近
接させてダンパ材を貫通孔内に注入するために、注入作
業中にノズルが当たるなどしてワイヤが変形する恐れが
ある。
In a structure in which a through hole is provided in the damper holder, the damper material is stably held, but it is necessary to pass a wire through the through hole. In addition, the injection direction of the damper material is the same as the direction in which the wire is stretched, and in order to make the damper material injection nozzle close to the wire and inject the damper material into the through hole, the nozzle hits during the injection work. The wire may be deformed.

【0009】本発明は、ワイヤの取付け及びダンパ材の
注入が簡単で、且つ、ダンパ材の振動抑制性能の低下の
ない光ピックアップ用対物レンズの支持構造を提供する
ことを目的とする。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a support structure for an objective lens for an optical pickup, in which a wire can be easily attached and a damper material can be easily injected, and the vibration suppression performance of the damper material does not deteriorate.

【0010】[0010]

【課題を解決するための手段】上記目的を達成するため
に本発明は、ワイヤの一端に対物レンズが固定され、前
記ワイヤの他端が前記対物レンズの振動を減衰させる振
動吸収手段を介して固定部材に固定されてなる光ピック
アップ用対物レンズの支持構造において、前記振動吸収
手段が、前記固定部材における前記ワイヤの位置に設け
られた凹部と、前記凹部と外部を接続する空間を形成す
る前記凹部より狭い幅のスリットと、前記凹部内に挿入
された前記ワイヤの周囲に充填された弾性体からなるこ
とを特徴とするものである。
According to the present invention, an objective lens is fixed to one end of a wire, and the other end of the wire is connected via a vibration absorbing means for attenuating the vibration of the objective lens. In a supporting structure of an objective lens for an optical pickup fixed to a fixing member, the vibration absorbing means forms a concave portion provided at a position of the wire in the fixing member, and a space connecting the concave portion to the outside. It is characterized by comprising a slit having a width narrower than the recess, and an elastic body filled around the wire inserted into the recess.

【0011】また、前記凹部は、前記対物レンズ側の断
面が大きい概略錐台状に形成されてなることを特徴とす
るものである。
The concave portion is formed in a substantially frustum shape having a large cross section on the objective lens side.

【0012】[0012]

【実施例】図1は本発明の一実施例の光ピックアップ用
対物レンズの支持構造を説明するための図で、(a)は
ダンパホルダの斜視図、(b)はダンパ材注入部のA矢
視図、(c)はプリント基板の斜視図である。図2はダ
ンパ材の注入状態を示す図で、(a)は斜視図、(b)
はB−B断面図、(c)はC−C断面図である。以下、
図に従って説明する。
1A and 1B are views for explaining a supporting structure of an objective lens for an optical pickup according to one embodiment of the present invention. FIG. 1A is a perspective view of a damper holder, and FIG. FIG. 2C is a perspective view of the printed circuit board. 2A and 2B are views showing a state of injection of a damper material, FIG. 2A is a perspective view, and FIG.
Is a BB sectional view, and (c) is a CC sectional view. Less than,
Description will be made with reference to the drawings.

【0013】1は先端に対物レンズ可動部(図5(b)
に示したものと同様)が連結されたワイヤ3を弾性的に
固定部(ピックアップのシャーシ)に近接して支持する
ための樹脂製のダンパホルダで、4本のワイヤ3の位置
に対応してダンパ材41を保持するための凹部11を有
する。その凹部11の側面にはワイヤ3の挿入及びダン
パ材41の注入のための凹部11の幅より狭いスリット
からなる開口部12が設けられている。2はワイヤ3を
半田46により固定するためのランド21を有する可撓
性のプリント基板で、ランド21に対応してプリント基
板2の側面にはワイヤ3を挿入するための切欠部22が
設けられている。3は対物レンズ等の対物レンズ可動部
を支持する弾性を有する4本のワイヤで、例えば、燐青
銅等により構成され、対物レンズ可動部を弾性的に支持
する作用の他に、対物レンズ部を上下、左右に移動制御
するためのコイルにプリント基板2の導電パターンを介
して供給される制御電流を通電する通電路も兼ねる。
尚、図2ではワイヤ3は断面が円形の線材で示されてい
るが、断面が4角形の板状片のものが使用されることも
ある。41はワイヤ3の振動を抑制するためにダンパホ
ルダ1の凹部11に充填された弾性を有するシリコン樹
脂等のダンパ材で、凹部11への注入時には流動性を有
するが、時間の経過とともに流動性を無くし弾性を有す
るようになる。
Reference numeral 1 denotes a movable part of the objective lens at the tip (FIG. 5B).
And a resin damper holder for elastically supporting the wire 3 to which the wire 3 is connected in close proximity to the fixed portion (the chassis of the pickup). The damper holder corresponds to the position of the four wires 3. It has a concave portion 11 for holding the material 41. On the side surface of the concave portion 11, an opening portion 12 formed of a slit narrower than the width of the concave portion 11 for inserting the wire 3 and injecting the damper material 41 is provided. Reference numeral 2 denotes a flexible printed circuit board having a land 21 for fixing the wire 3 by solder 46, and a notch 22 for inserting the wire 3 is provided on a side surface of the printed circuit board 2 corresponding to the land 21. ing. Reference numeral 3 denotes four elastic wires supporting an objective lens movable portion such as an objective lens. The wires 3 are made of, for example, phosphor bronze, and serve to elastically support the objective lens movable portion. The coil also serves as an energizing path through which a control current supplied through the conductive pattern of the printed circuit board 2 is applied to the coil for controlling the vertical and horizontal movement.
Although the wire 3 is shown in FIG. 2 as a wire having a circular cross section, a wire having a rectangular cross section may be used. Reference numeral 41 denotes a damper material such as an elastic silicone resin filled in the concave portion 11 of the damper holder 1 for suppressing the vibration of the wire 3. Lost elasticity.

【0014】先ず、ワイヤ3の支持方法について述べ
る。一端に対物レンズ可動部が固定された4本のワイヤ
3はダンパホルダ1の側面に設けられた開口部12から
凹部11に挿入し、同時にプリント基板2の切欠部22
のランド21(固定部)に半田付けする。半田付け後、
ダンパホルダ1の凹部11内のワイヤ3の周囲に開口部
12から注射器等を使用してゲル状のシリコン樹脂(ダ
ンパ材)41を注入する。この時、ダンパホルダ1の側
面からダンパ材41を注入できるので注入作業が容易で
あり、また、ワイヤ3に変形等の損傷を与える恐れもな
い。そして、注入されたシリコン樹脂は時間の経過とと
もに適度に固化して弾性のあるダンパ材41となる。
First, a method of supporting the wire 3 will be described. The four wires 3 each having an objective lens movable portion fixed at one end are inserted into the concave portion 11 through the opening portion 12 provided on the side surface of the damper holder 1, and at the same time, the cutout portion 22 of the printed circuit board 2 is inserted.
Is soldered to the land 21 (fixed portion). After soldering,
A gel-like silicone resin (damper material) 41 is injected from the opening 12 around the wire 3 in the recess 11 of the damper holder 1 using a syringe or the like. At this time, since the damper material 41 can be injected from the side surface of the damper holder 1, the injection operation is easy, and there is no possibility that the wire 3 is damaged by deformation or the like. Then, the injected silicone resin is appropriately solidified with the passage of time to become an elastic damper material 41.

【0015】次に、ダンパ材41によるワイヤ3の振動
抑制作用について述べる。対物レンズ可動部の振動によ
り4本のワイヤ3はダンパ材41に密着した状態でダン
パホルダ1の凹部11内で上下、左右に動く。この時、
遮断部13により開口部12が狭くなっているので、ワ
イヤ3の振動によりダンパ材41が開口部12から外部
に逃げることがなく、ダンパ材41が逃げることによっ
てダンパ材41とワイヤ3間に空間が生じることがな
い。従って、ダンパ材41はワイヤ3に密着し振動抑制
効果が維持される。
Next, the vibration suppressing action of the wire 3 by the damper member 41 will be described. Due to the vibration of the movable part of the objective lens, the four wires 3 move up, down, left and right in the recess 11 of the damper holder 1 in a state of being in close contact with the damper material 41. At this time,
Since the opening 12 is narrowed by the blocking portion 13, the vibration of the wire 3 does not allow the damper material 41 to escape from the opening 12 to the outside, and the escape of the damper material 41 allows the space between the damper material 41 and the wire 3. Does not occur. Therefore, the damper material 41 is in close contact with the wire 3 and the vibration suppressing effect is maintained.

【0016】以上のように本実施例では、ダンパホルダ
1の側面に設けられた開口部12によりワイヤ3及びダ
ンパ材41の挿入が容易にでき、また、遮断部13がワ
イヤ3の振動によりダンパ材41が外部に逃げるのを防
ぐので、ダンパ材41がワイヤ3から剥離することもな
く振動抑制効果が維持できる。図3は他のダンパホルダ
の構造を示す図で、(a)は凹部斜視図、(b)は対物
レンズ可動部側の正面図、(c)はプリント基板側の正
面図である。図4は振動抑制作用を説明するための図
で、(a)は対物レンズ可動部側の断面図、(b)はプ
リント基板側の断面図、(c)はワイヤの振動状態を示
す断面図(ワイヤが振動中心にある場合)である。
(d)はワイヤの振動状態を示す断面図(ワイヤが上方
に振動した場合)である。以下、図に従って説明する。
As described above, in the present embodiment, the insertion of the wire 3 and the damper material 41 can be easily performed by the opening 12 provided on the side surface of the damper holder 1, and the blocking portion 13 can be easily moved by the vibration of the wire 3. Since the escape of 41 to the outside is prevented, the vibration suppressing effect can be maintained without the damper material 41 peeling off from the wire 3. 3A and 3B are diagrams showing the structure of another damper holder, wherein FIG. 3A is a perspective view of a concave portion, FIG. 3B is a front view of an objective lens movable portion side, and FIG. 3C is a front view of a printed circuit board side. 4A and 4B are diagrams for explaining the vibration suppressing action, in which FIG. 4A is a cross-sectional view on the movable side of the objective lens, FIG. 4B is a cross-sectional view on the printed circuit board side, and FIG. (When the wire is at the center of vibration).
(D) is a cross-sectional view showing the state of vibration of the wire (when the wire vibrates upward). Hereinafter, description will be made with reference to the drawings.

【0017】5は先端に対物レンズ可動部(図示せず)
が連結されたワイヤ3を弾性的に固定部に近接して支持
するための樹脂製のダンパホルダで、4本のワイヤ3の
位置に対応してダンパ材41を保持するための凹部51
を有する。その凹部51の側面にはワイヤ3の挿入及び
ダンパ材41の注入のための凹部51の幅よりも狭いス
リットからなる開口部52が設けられている。また、凹
部51は均一な断面形状ではなく対物レンズ側が広く、
プリント基板側(固定部側)が狭くなるようなテーパ
状、つまり、概略四角錘台状に形成されている。尚、プ
リント基板2、ワイヤ3、ダンパ材41及び半田46は
前述の実施例と名称、機能及び作用が同じであるので同
一番号を付し説明は省略する。
Reference numeral 5 denotes a movable part of the objective lens (not shown) at the tip.
Is a resin damper holder for elastically supporting the wire 3 to which the wire 3 is connected close to the fixed portion, and a concave portion 51 for holding the damper material 41 corresponding to the position of the four wires 3.
Having. On the side surface of the concave portion 51, an opening portion 52 formed of a slit narrower than the width of the concave portion 51 for inserting the wire 3 and injecting the damper material 41 is provided. Also, the concave portion 51 is not uniform in cross-sectional shape but is wider on the objective lens side,
It is formed in a tapered shape in which the printed circuit board side (fixed portion side) becomes narrow, that is, in a substantially quadrangular truncated pyramid shape. The printed circuit board 2, the wire 3, the damper material 41, and the solder 46 have the same names, functions, and functions as those of the above-described embodiment, and thus are denoted by the same reference numerals and description thereof is omitted.

【0018】先ず、ワイヤ3の支持方法について述べ
る。一端に対物レンズ可動部が固定された4本のワイヤ
3をダンパホルダ5の側面に設けられた開口部52から
凹部51に挿入する。同時にプリント基板2の切欠部の
ランド21(固定部)に半田46により固定する。半田
付け後、ダンパホルダ5の凹部51内のワイヤ3の周囲
に開口部52から注射器等を使用してゲル状のシリコン
樹脂(ダンパ材)41を注入する。注入されたシリコン
樹脂は時間の経過とともに適度に固化して弾性のあるダ
ンパ材41となる。
First, a method of supporting the wire 3 will be described. Four wires 3 each having an objective lens movable portion fixed to one end are inserted into the concave portion 51 through an opening 52 provided on a side surface of the damper holder 5. At the same time, the printed circuit board 2 is fixed to the notched land 21 (fixed portion) by the solder 46. After the soldering, a gel-like silicon resin (damper material) 41 is injected around the wire 3 in the concave portion 51 of the damper holder 5 from the opening 52 using a syringe or the like. The injected silicone resin is appropriately solidified with the passage of time to become an elastic damper material 41.

【0019】次に、ダンパ材41によるワイヤ3の振動
抑制作用について述べる。対物レンズ可動部の振動によ
り4本のワイヤ3はダンパ材41に密着した状態でプリ
ント基板2に半田付けされた部分(E点)を支点として
ダンパホルダ5の凹部51内で上下、左右に動く。従っ
て、対物レンズ可動部側のワイヤ3の振幅は大きく、プ
リント基板側のワイヤ3の振幅は小さくなる。ダンパ材
41にはワイヤ3の振動により圧縮力と引張力が交互に
かかる。この時、ダンパ材41がワイヤ3の振幅に対応
した最適値より厚過ぎると振動抑制作用が生じない。一
方、ダンパ材41がワイヤ3の振幅に対応した最適値よ
り薄過ぎて過負荷の状態になると、ダンパ材41に亀裂
が生じたり、ダンパ材41とワイヤ3間が剥離したりし
て振動抑制効果が低下する。本例では、ワイヤ3の振幅
が大きい部分ではダンパ材41が厚くなるようにダンパ
ホルダ5の対物レンズ可動部側の凹部51aが形成され
ており、振動を厚いダンパ材41で分散して吸収しダン
パ材41に過剰な負荷がかからないので振動抑制効果が
維持できる。また、ワイヤ3の振幅が小さい部分ではダ
ンパ材41が薄くなるようにダンパホルダ5のプリント
基板側の凹部51bが形成されており振動が効果的に抑
制される。遮蔽部53はワイヤ3の振動によりダンパ材
41が開口部52から逃げるのを防ぐ作用を行う。尚、
本例ではダンパ材充填部(凹部51)の形状を4角錐台
としたものについて説明したが、円錐台状等の各種錐台
状に形成しても同様の効果が得られる。
Next, the vibration suppressing action of the wire 3 by the damper material 41 will be described. Due to the vibration of the movable part of the objective lens, the four wires 3 move up, down, left and right in the concave portion 51 of the damper holder 5 with the portion (point E) soldered to the printed circuit board 2 in contact with the damper material 41 as a fulcrum. Therefore, the amplitude of the wire 3 on the objective lens movable section side is large, and the amplitude of the wire 3 on the printed board side is small. A compressive force and a tensile force are alternately applied to the damper material 41 by the vibration of the wire 3. At this time, if the damper material 41 is too thicker than the optimum value corresponding to the amplitude of the wire 3, the vibration suppressing action does not occur. On the other hand, when the damper material 41 is too thin than the optimum value corresponding to the amplitude of the wire 3 and is in an overloaded state, the damper material 41 is cracked, or the damper material 41 and the wire 3 are separated and the vibration is suppressed. The effect decreases. In this example, a concave portion 51a on the movable side of the objective lens of the damper holder 5 is formed so that the damper material 41 becomes thicker in a portion where the amplitude of the wire 3 is large. Since an excessive load is not applied to the member 41, the vibration suppressing effect can be maintained. Further, in a portion where the amplitude of the wire 3 is small, a concave portion 51b on the printed circuit board side of the damper holder 5 is formed so that the damper material 41 becomes thin, so that vibration is effectively suppressed. The shielding portion 53 functions to prevent the damper material 41 from escaping from the opening 52 due to the vibration of the wire 3. still,
In this example, the shape of the damper material filling portion (concave portion 51) is described as a truncated pyramid, but the same effect can be obtained by forming the shape into various frustums such as a truncated cone.

【0020】以上のように本実施例では、ダンパホルダ
5の凹部51(ダンパ材充填部)が錐台状に形成されて
おり、ワイヤ3の振幅に対応した最適なダンパ材41の
厚さになるため、ダンパ材に負荷が掛かり過ぎることも
なくダンパ材41の劣化が防止でき、また、振動抑制効
果も維持できる。
As described above, in the present embodiment, the concave portion 51 (damper material filling portion) of the damper holder 5 is formed in a truncated frustum shape, and the thickness of the damper material 41 optimally corresponds to the amplitude of the wire 3. Therefore, it is possible to prevent the damper material 41 from deteriorating without excessively applying a load to the damper material, and to maintain the vibration suppressing effect.

【0021】[0021]

【発明の効果】以上説明したように、本発明では、ワイ
ヤの取付け及びダンパ材の注入が簡単で、且つ、ダンパ
材の振動抑制性能の低下のない光ピックアップ用対物レ
ンズの支持構造が提供できる。
As described above, according to the present invention, it is possible to provide a support structure for an objective lens for an optical pickup in which the attachment of the wire and the injection of the damper material are simple and the vibration suppression performance of the damper material is not reduced. .

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

【図1】本発明の一実施例の光ピックアップ用対物レン
ズの支持構造を説明するための図である。
FIG. 1 is a view for explaining a support structure of an objective lens for an optical pickup according to one embodiment of the present invention.

【図2】ダンパ材の注入状態を示す図である。FIG. 2 is a view showing a state of injection of a damper material.

【図3】他のダンパホルダの構造を示す図である。FIG. 3 is a diagram showing a structure of another damper holder.

【図4】他のダンパホルダの振動抑制作用を説明するた
めの図である。
FIG. 4 is a diagram for explaining a vibration suppressing action of another damper holder.

【図5】光ディスク再生装置のサーボ方法を説明するた
めの図である。
FIG. 5 is a diagram for explaining a servo method of the optical disc reproducing device.

【図6】従来の光ピックアップ用対物レンズの支持構造
を説明するための図である。
FIG. 6 is a view for explaining a conventional support structure for an optical pickup objective lens.

【符号の説明】[Explanation of symbols]

1、5・・・・・・ダンパホルダ、 21・・・・切
欠部、11、51・・・・凹部、 3・・・
・・ワイヤ、12、52・・・・開口部、 4
1・・・・ダンパ材、13、53・・・・遮断部、
46・・・・半田、2・・・・・・・・プリント
基板、 71・・・・対物レンズ可動部。
1, 5... Damper holder, 21... Notch, 11, 51.
..Wires, 12, 52... Openings, 4
1... Damper material, 13, 53.
46: solder, 2: printed circuit board, 71: movable part of objective lens.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 ワイヤの一端に対物レンズが固定され、
前記ワイヤの他端が前記対物レンズの振動を減衰させる
振動吸収手段を介して固定部材に固定されてなる光ピッ
クアップ用対物レンズの支持構造において、 前記振動吸収手段が、 前記固定部材における前記ワイヤの位置に設けられた凹
部と、 前記凹部と外部を接続する空間を形成する前記凹部より
狭い幅のスリットと、 前記凹部内に挿入された前記ワイヤの周囲に充填された
弾性体からなることを特徴とする光ピックアップ用対物
レンズの支持構造。
1. An object lens is fixed to one end of a wire,
In a supporting structure for an objective lens for an optical pickup, wherein the other end of the wire is fixed to a fixed member via a vibration absorbing unit that attenuates the vibration of the objective lens, A concave portion provided at a position, a slit having a width smaller than the concave portion forming a space connecting the concave portion to the outside, and an elastic body filled around the wire inserted into the concave portion. Support structure for an objective lens for an optical pickup.
【請求項2】 前記凹部は、 前記対物レンズ側の断面が大きい概略錐台状に形成され
てなることを特徴とする請求項1記載の光ピックアップ
用対物レンズの支持構造。
2. The supporting structure for an objective lens for an optical pickup according to claim 1, wherein the concave portion is formed in a substantially frustum shape having a large cross section on the objective lens side.
JP26207697A 1997-09-26 1997-09-26 Support structure for objective lens of optical pickup Pending JPH1196572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26207697A JPH1196572A (en) 1997-09-26 1997-09-26 Support structure for objective lens of optical pickup

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26207697A JPH1196572A (en) 1997-09-26 1997-09-26 Support structure for objective lens of optical pickup

Publications (1)

Publication Number Publication Date
JPH1196572A true JPH1196572A (en) 1999-04-09

Family

ID=17370702

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26207697A Pending JPH1196572A (en) 1997-09-26 1997-09-26 Support structure for objective lens of optical pickup

Country Status (1)

Country Link
JP (1) JPH1196572A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100316984B1 (en) * 1998-11-24 2001-12-24 가타오카 마사타카 Optical pickup
WO2002069333A1 (en) * 2001-02-28 2002-09-06 Sony Corporation Objective lens drive device, and optical pickup device using objective lens drive device
EP1411504A2 (en) * 2002-10-16 2004-04-21 Samsung Electronics Co., Ltd. Optical pickup actuator and optical recording and/or reproducing apparatus using the same
US6735024B2 (en) 1999-09-21 2004-05-11 Matsushita Electric Industrial Co., Ltd. Optical pickup with improved optical properties
KR100737907B1 (en) * 2003-10-08 2007-07-10 푸나이덴끼 가부시끼가이샤 Optical Pickup
JP2017026853A (en) * 2015-07-23 2017-02-02 アルプス電気株式会社 Lens driving device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100316984B1 (en) * 1998-11-24 2001-12-24 가타오카 마사타카 Optical pickup
US6735024B2 (en) 1999-09-21 2004-05-11 Matsushita Electric Industrial Co., Ltd. Optical pickup with improved optical properties
WO2002069333A1 (en) * 2001-02-28 2002-09-06 Sony Corporation Objective lens drive device, and optical pickup device using objective lens drive device
CN100426390C (en) * 2001-02-28 2008-10-15 索尼株式会社 Objective lens drive device, and optical pickup device therewith
EP1411504A2 (en) * 2002-10-16 2004-04-21 Samsung Electronics Co., Ltd. Optical pickup actuator and optical recording and/or reproducing apparatus using the same
KR100505644B1 (en) * 2002-10-16 2005-08-03 삼성전자주식회사 Optical pick-up actuator and apparatus for recording and/or reproducing data
US7162727B2 (en) 2002-10-16 2007-01-09 Samsung Electronics Co., Ltd. Optical pickup actuator with improved damping effect with end of suspension wire movably inserted into groove of wire holder
KR100737907B1 (en) * 2003-10-08 2007-07-10 푸나이덴끼 가부시끼가이샤 Optical Pickup
JP2017026853A (en) * 2015-07-23 2017-02-02 アルプス電気株式会社 Lens driving device

Similar Documents

Publication Publication Date Title
JPH08329504A (en) Optical pickup device
JP3756118B2 (en) Optical pickup
JPH1196572A (en) Support structure for objective lens of optical pickup
JP2001344780A (en) Optical driving device and optical storage device
EP0465175B1 (en) Optical head
KR19980083599A (en) Integrated Actuator for Optical Pickup
JP2008310862A (en) Optical pickup and optical disk device
JPH0748266B2 (en) Objective lens drive
JP3662358B2 (en) Objective lens drive
JP3006194B2 (en) Objective lens drive
JPH0863768A (en) Optical head
KR19990018473A (en) Objective Lens for Actuator
KR100192132B1 (en) A horizontal moving type optical pickup actuator
JP3639132B2 (en) Optical pickup
KR0175813B1 (en) A tracking coil bonding device of optical pick-up actuators
KR100194350B1 (en) Vibration Absorption Structure of Optical Pickup Actuator for DVD
KR0135646Y1 (en) A damping gel leakage preventing structure of optical pickup actuators
KR0135647Y1 (en) A plate damping structure of optical pickup actuators
JP3475990B2 (en) Optical head actuator and method of assembling the same
KR0167933B1 (en) Pick-up structure of optical pick-up actuator
JP2011003234A (en) Optical pickup and holder for optical pickup
KR19980077772A (en) Actuator with improved lens adhesion
JPS63222336A (en) Optical system driving device
JP2003272192A (en) Actuator device of objective lens
JP2005063496A (en) Optical pickup device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040826

A131 Notification of reasons for refusal

Effective date: 20060613

Free format text: JAPANESE INTERMEDIATE CODE: A131

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20061010