JPS63113945A - Structure for parallel plate spring of head actuator - Google Patents
Structure for parallel plate spring of head actuatorInfo
- Publication number
- JPS63113945A JPS63113945A JP26026786A JP26026786A JPS63113945A JP S63113945 A JPS63113945 A JP S63113945A JP 26026786 A JP26026786 A JP 26026786A JP 26026786 A JP26026786 A JP 26026786A JP S63113945 A JPS63113945 A JP S63113945A
- Authority
- JP
- Japan
- Prior art keywords
- plate spring
- oblique
- head actuator
- parallel plate
- strength
- 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
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims abstract description 5
- 239000003365 glass fiber Substances 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、光学式記録再生装置のヘッドアクチュエー
タ部、仮バネ構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a head actuator section and a temporary spring structure of an optical recording/reproducing device.
通１’ｌの平行板バネは第４図のように、長方形の薄い
仮８がある間隔をもって向い合（１、それぞれの端部は
部材に接合されている。第４図むよ、へ、２ドアクチ、
エータの、）オーノノシング方向に’Ｂｔ ＜ための平
行板バネ構造であるが、レンズ１を固定したフレーム部
材２は、平行板／＜ネ（７４造（こより、もう片側端部
に接合された支持部材３に対して平行移動を行なうこと
になる。As shown in Fig. 4, a parallel plate spring with a length of 1'l is made of thin rectangular plates 8 facing each other at a certain interval (1, each end is joined to a member. 2 door acti,
The frame member 2 to which the lens 1 is fixed has a parallel plate spring structure for 'Bt < in the awnonosing direction of the eta. The member 3 will be moved in parallel.
〔発明が１１Ｙ決しようとする問題点〕平行板バネ（，
７，造を利用したへ・ソドアクチュ” ’夕では、高次
の構造的な共振モードとして、ねじれを主原因としたモ
ードが発生する。[Problems that the invention attempts to resolve in 11Y] Parallel plate springs (,
7. In the case of structural actuation, a mode primarily caused by torsion occurs as a higher-order structural resonance mode.
そのねじれを主装置としたモードの振幅が大きくなると
、レンズの位置を制御するサーボ系が乱れ、レーザー光
の焦点が狂ったり、さらには発振して焦点がとんでしま
うこともある。If the amplitude of the mode whose main device is twist becomes large, the servo system that controls the position of the lens becomes disturbed, causing the laser beam to become out of focus, or even to oscillate and become out of focus.
本発１！１１のヘッドアクチュエータ平行板ｌ＜ネ↑ｌ
ｌｉ造では、仮バネ平面上で、斜め方向もしくは横方向
に対し、材ダ゛ｔもしくは形状的に強度強化したことを
特徴とする。Head actuator parallel plate l<ne↑l of main engine 1!11
The Li construction is characterized by strengthening the material weight or shape in the diagonal or lateral direction on the plane of the temporary spring.
第５図に示すように、仮バネ部０に、平行板バネの可す
ノ方向である上下方向に曲げ力１１を加えた時の曲げ時
主応力方向は１０は、仮バネに沿った力面となる。As shown in Fig. 5, when a bending force 11 is applied to the temporary spring part 0 in the vertical direction, which is the direction in which the parallel leaf spring is applied, the principal stress direction during bending is 10, which is the force along the temporary spring. It becomes a surface.
それに対して？ｌｌ′；６図に示すように、仮バネ部９
にねじり力１丁３を加えた時のねじり時主応力方向１２
は、仮バネ９の長手方向に対して斜めに横切るようには
しっている。それぞれの主応力方向に対して強度強化し
てやれば、それぞれの剛性の強化と同等になる。そこで
本発明では、板バネ平面−１−で斜めもしくは横方向に
対して、材質もしくは形状的に強度強化することにより
、曲げに対する剛性に比べて、ねじれに対する剛性が増
し、アクチュエータの高次の共振モードの共振周波数を
上げ、振幅を小さくシ、ザーボ系の乱れを少なくするこ
とが可能となる。On the other hand? ll'; As shown in Figure 6, the temporary spring part 9
Principal stress direction 12 during torsion when a torsion force 1 to 3 is applied to
are arranged diagonally across the longitudinal direction of the temporary spring 9. If the strength is strengthened in each principal stress direction, it will be equivalent to strengthening each stiffness. Therefore, in the present invention, by reinforcing the strength of the plate spring plane -1- in the diagonal or lateral direction by material or shape, the rigidity against torsion is increased compared to the rigidity against bending, and the high-order resonance of the actuator is increased. It is possible to increase the resonance frequency of the mode, reduce the amplitude, and reduce disturbances in the servo system.
第１図は、材質的に斜め方向を強化した場合の平行板バ
ネｊｌｌ造である。仮バネ部５に対し、ファイバー繊維
方向が斜めになるように、グラスファイバーシー１−１
１を貼る。このように強度的な異方性材料を用いること
により仮バネの斜め方向−・の強度を強＜シ、ねじれ剛
性を高めることができる。FIG. 1 shows a parallel plate spring structure in which the material is reinforced in the diagonal direction. The glass fiber seam 1-1 is arranged so that the fiber direction is oblique to the temporary spring part 5.
Paste 1. By using such a strong anisotropic material, the strength of the temporary spring in the diagonal direction can be increased and the torsional rigidity can be increased.
第２図は形状的に斜め方向を強化した場合である。斜め
方向に肉を残すように抜きを行った仮バネ部６は斜め方
向に対する強度が強いためねしめ剛性を高めることがで
きる。FIG. 2 shows a case where the shape is strengthened in the diagonal direction. The temporary spring part 6, which has been punched out so as to leave the thickness in the diagonal direction, has a strong strength in the diagonal direction, so that the tightening rigidity can be increased.
第３図は形状的に斜め及び横方向を強化した場合である
。斜め方向に肉を残すとともに、各抜き部に横に走る曲
げを残した仮バネ部は、斜め方向及び横方向に対して強
度強化されたことにより、ねじれ剛性を盲めることがで
きる。FIG. 3 shows a case where the shape is reinforced in the diagonal and lateral directions. The temporary spring part, which leaves the thickness in the diagonal direction and also leaves the bend running horizontally in each punched part, can be strengthened in the diagonal direction and in the lateral direction, so that the torsional rigidity can be reduced.
以」二述べたように、本発明によれば、板バネの斜め方
向もしくは横方向を材質的、形状的に強化することによ
り、ねじれ剛性が強い平行板バネ構造が得られ、それを
光学式記録再生装置用ヘッドアクチュエータ平行板バネ
構造に利用することにより、ねじれを主原因とした高次
の共振モードによる１５もれの少ないヘッドアクヂュエ
ータを得ることができる。As described above, according to the present invention, a parallel plate spring structure with strong torsional rigidity can be obtained by strengthening the plate spring in the diagonal or lateral direction in terms of material and shape, and this can be achieved using an optical system. By utilizing the parallel plate spring structure of a head actuator for a recording/reproducing device, a head actuator with less leakage due to a high-order resonance mode mainly caused by torsion can be obtained.
また、本発明の平行板バネ構造は、光学式記録再生装置
の他にも、ねじれ剛性が問題となるような機構部にも利
用することができる。Further, the parallel plate spring structure of the present invention can be used not only for optical recording and reproducing devices but also for mechanical parts where torsional rigidity is a problem.
第１図は、本発明で材質的に強度強化した例の斜視図で
ある。
第２図は、本発明で構造的に斜め方向を強度強化した例
の斜視図である。
第″、３図は、本発明で＋１１，１造的に斜め方向及び
横方向を強度強化した例の斜視メ１である。
第４図は、従来例の斜視図である。
第５図は、曲げ１１１を主応力線の斜視図である。
第６図は、ねじり時主応力線の斜視図である。
ｌ・・・レンズ
２・・・フレーム
３・・・支持部
４・・・グラスファイバーシート
５〜９・・・仮バネ部
以 上
出Ｋ（１人 セイコーエプソン式株会社代理人 弁理
士 最 上 彷 他１名妬３図
、２
蕗４−図FIG. 1 is a perspective view of an example in which the strength of the material is strengthened according to the present invention. FIG. 2 is a perspective view of an example in which the strength in the diagonal direction is structurally strengthened according to the present invention. 3 is a perspective view of an example in which the strength is strengthened in the diagonal and lateral directions in a +11,1 structural manner according to the present invention. FIG. 4 is a perspective view of a conventional example. , bending 111 is a perspective view of principal stress lines. FIG. 6 is a perspective view of principal stress lines during torsion. l...Lens 2...Frame 3...Support part 4...Glass Fiber sheets 5 to 9...More than the temporary spring part
Claims (1)
なう光学式記録再生装置において、レーザー光を集光さ
せるための対物レンズを記録膜上のフォーカシング、ト
ラッキング方向に対して追従させるためのヘッドアクチ
ュエータで、対物レンズを固定した部材を支持する方法
として、板バネ平面上で斜め方向もしくは横方向に対し
、材質もしくは形状により強度強化したヘッドアクチュ
エータ平行板バネ構造。In an optical recording and reproducing device that records and reproduces information by condensing a laser beam onto a recording film, the objective lens for concentrating the laser beam follows the focusing and tracking direction on the recording film. As a method of supporting a member to which an objective lens is fixed in a head actuator, a head actuator parallel plate spring structure is strengthened in diagonal or lateral directions on a plane of the plate spring by changing the material or shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26026786A JPS63113945A (en) | 1986-10-31 | 1986-10-31 | Structure for parallel plate spring of head actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26026786A JPS63113945A (en) | 1986-10-31 | 1986-10-31 | Structure for parallel plate spring of head actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63113945A true JPS63113945A (en) | 1988-05-18 |
Family
ID=17345678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26026786A Pending JPS63113945A (en) | 1986-10-31 | 1986-10-31 | Structure for parallel plate spring of head actuator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63113945A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5157825A (en) * | 1989-07-25 | 1992-10-27 | Kabushiki Kaisha Toshiba | Method of manufacturing a leaf spring mechanism |
| US5253402A (en) * | 1989-07-25 | 1993-10-19 | Kabushiki Kaisha Toshiba | Method of manufacturing a leaf spring mechanism |
| US5377052A (en) * | 1993-06-14 | 1994-12-27 | International Business Machines Corporation | Actuator assembly for servo-controlled magnetic tape head |
| WO2002077983A1 (en) * | 2001-03-21 | 2002-10-03 | Dphi Acquisitions, Inc. | Tilt focus method and mechanism for an optical drive |
| US6901598B1 (en) | 2000-04-24 | 2005-05-31 | Dphi Acquisitions, Inc. | Tilt focus method and mechanism for an optical drive |
| DE102018128911A1 (en) | 2018-11-16 | 2020-05-20 | Physik Instrumente (Pi) Gmbh & Co. Kg | Multi-axis guiding device |
-
1986
- 1986-10-31 JP JP26026786A patent/JPS63113945A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5157825A (en) * | 1989-07-25 | 1992-10-27 | Kabushiki Kaisha Toshiba | Method of manufacturing a leaf spring mechanism |
| US5253402A (en) * | 1989-07-25 | 1993-10-19 | Kabushiki Kaisha Toshiba | Method of manufacturing a leaf spring mechanism |
| US5377052A (en) * | 1993-06-14 | 1994-12-27 | International Business Machines Corporation | Actuator assembly for servo-controlled magnetic tape head |
| US6901598B1 (en) | 2000-04-24 | 2005-05-31 | Dphi Acquisitions, Inc. | Tilt focus method and mechanism for an optical drive |
| US7337452B2 (en) * | 2000-04-24 | 2008-02-26 | Dphi Acquisitions, Inc. | Tilt focus mechanism for an optical drive |
| WO2002077983A1 (en) * | 2001-03-21 | 2002-10-03 | Dphi Acquisitions, Inc. | Tilt focus method and mechanism for an optical drive |
| DE102018128911A1 (en) | 2018-11-16 | 2020-05-20 | Physik Instrumente (Pi) Gmbh & Co. Kg | Multi-axis guiding device |
| WO2020098884A1 (en) | 2018-11-16 | 2020-05-22 | Physik Instrumente (Pi) Gmbh & Co. Kg | Multi-axis guide device |
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