JPH0668481A - Carriage mechanism for optical head - Google Patents
Carriage mechanism for optical headInfo
- Publication number
- JPH0668481A JPH0668481A JP21932692A JP21932692A JPH0668481A JP H0668481 A JPH0668481 A JP H0668481A JP 21932692 A JP21932692 A JP 21932692A JP 21932692 A JP21932692 A JP 21932692A JP H0668481 A JPH0668481 A JP H0668481A
- Authority
- JP
- Japan
- Prior art keywords
- carriage member
- carriage
- optical head
- coil
- carbon fibers
- 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.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光ディスク装置におけ
る光学ヘッドのキャリッジ機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carriage mechanism for an optical head in an optical disk device.
【０００２】[0002]
【従来の技術】従来から、光ディスク装置における光学
ヘッドのキャリッジ機構としては、例えば図６および図
７に示すようなものがある。これらの図において、１は
図示しない筐体にそれぞれ対向配置して固定された一対
の磁気回路、２は磁気回路１との間で駆動力を発生する
駆動用コイルである。この駆動用コイル２は、一端部に
光学ヘッド３を搭載したキャリッジ部材４の他端に固定
されている。そしてキャリッジ部材４は、磁気回路１と
駆動用コイル２との間で発生した駆動力によってガイド
シャフト５、６に沿って矢印方向に搬送される。2. Description of the Related Art Conventionally, as a carriage mechanism of an optical head in an optical disk device, there are those shown in FIGS. 6 and 7, for example. In these drawings, reference numeral 1 is a pair of magnetic circuits fixed to a casing (not shown) so as to face each other, and 2 is a driving coil for generating a driving force between the magnetic circuit 1. The drive coil 2 is fixed to the other end of a carriage member 4 having an optical head 3 mounted on one end. Then, the carriage member 4 is conveyed in the arrow direction along the guide shafts 5 and 6 by the driving force generated between the magnetic circuit 1 and the driving coil 2.
【０００３】ところで、キャリッジ部材４は通常、アル
ミニウムからなり、しかも軽量化のため光学ヘッド３の
搭載部、駆動用コイル２の固定部、および光学ヘッド搭
載部とコイル固定部との連結部以外の部分を取り除いて
なっている。このため全体として剛性は低いものとな
り、キャリッジ部材４が搬送移動中に受けるねじりや曲
げの力によって振動を起こしたとき、二次共振が低い周
波数で発生することになる。By the way, the carriage member 4 is usually made of aluminum, and in addition to the mounting portion of the optical head 3, the fixing portion of the driving coil 2 and the connecting portion between the optical head mounting portion and the coil fixing portion for weight reduction. The part has been removed. Therefore, the rigidity is low as a whole, and when the carriage member 4 vibrates due to a twisting or bending force received during the conveyance movement, secondary resonance occurs at a low frequency.
【０００４】[0004]
【発明が解決しようとする課題】このように、従来から
の光学ヘッドキャリッジ機構におけるキャリッジ部材は
剛性が低く、二次共振が低い周波数で発生してしまうと
いう問題があった。As described above, there is a problem that the carriage member in the conventional optical head carriage mechanism has low rigidity and the secondary resonance occurs at a low frequency.
【０００５】本発明はこのような課題を解決するための
もので、キャリッジ部材を軽量高剛性化し、共振周波数
を高くすることのできる光学ヘッドのキャリッジ機構の
提供を目的としている。The present invention has been made to solve the above problems, and an object of the present invention is to provide a carriage mechanism for an optical head, which can make the carriage member lightweight and highly rigid and increase the resonance frequency.
【０００６】[0006]
【課題を解決するための手段】第１の発明の光学ヘッド
のキャリッジ機構は上記した目的を達成するために、筐
体に固定された磁気回路との間で駆動力を発生するコイ
ルと光学ヘッドとを搭載したキャリッジ部材を、前記磁
気回路と前記コイルとの間で発生した駆動力によりガイ
ド部材に沿って搬送させてなる光学ヘッドのキャリッジ
機構において、前記キャリッジ部材が炭素繊維からなる
ことを特徴としている。In order to achieve the above-mentioned object, a carriage mechanism of an optical head according to a first aspect of the present invention has a coil for generating a driving force between a magnetic circuit fixed to a housing and an optical head. In a carriage mechanism of an optical head, in which a carriage member having a carriage is carried along a guide member by a driving force generated between the magnetic circuit and the coil, the carriage member is made of carbon fiber. I am trying.
【０００７】また第２の発明の光学ヘッドのキャリッジ
機構は上記した目的を達成するために、筐体に固定され
た磁気回路との間で駆動力を発生するコイルと光学ヘッ
ドとを搭載したキャリッジ部材を、前記磁気回路と前記
コイルとの間で発生した駆動力によりガイド部材に沿っ
て搬送させてなる光学ヘッドのキャリッジ機構におい
て、前記キャリッジ部材が炭素繊維と金属繊維との複合
化材料からなることを特徴としている。In order to achieve the above-mentioned object, the carriage mechanism of the optical head of the second invention is a carriage on which a coil for generating a driving force between a magnetic circuit fixed to the housing and an optical head are mounted. In a carriage mechanism of an optical head in which a member is conveyed along a guide member by a driving force generated between the magnetic circuit and the coil, the carriage member is made of a composite material of carbon fiber and metal fiber. It is characterized by that.
【０００８】[0008]
【作用】第１の発明によれば、キャリッジ部材を炭素繊
維により構成し、ねじりや曲げに対する応力を炭素繊維
の繊維方向で受けることにより、軽量でありながらも剛
性が高く共振周波数の高いキャリッジ部材を実現するこ
とができる。According to the first aspect of the present invention, the carriage member is made of carbon fiber, and the stress against twisting and bending is applied in the fiber direction of the carbon fiber, so that the carriage member is lightweight but has high rigidity and high resonance frequency. Can be realized.
【０００９】また第２の発明によれば、キャリッジ部材
を炭素繊維と金属繊維との複合化材料により構成するこ
とで、軽量で剛性が高く、しかも金属と樹脂の中間の性
質や導電性を持ったキャリッジ部材を実現することがで
きる。According to the second aspect of the invention, the carriage member is made of a composite material of carbon fiber and metal fiber, so that the carriage member is lightweight and has high rigidity, and has an intermediate property or conductivity between metal and resin. The carriage member can be realized.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１は本発明に係る一実施例の光学ヘッドのキャ
リッジ機構の構成を説明するための平面図、図２は図１
の側面図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view for explaining the structure of a carriage mechanism of an optical head according to an embodiment of the present invention, and FIG.
FIG.
【００１１】これらの図において、１１は図示しない筐
体にそれぞれ対向配置して固定された一対の磁気回路、
１２は磁気回路１１との間で駆動力を発生する駆動用コ
イルである。この駆動用コイル１２は、一端部に光学ヘ
ッド１３を搭載したキャリッジ部材１４の他端に固定さ
れている。そしてキャリッジ部材１４は、磁気回路１１
と駆動用コイル１２との間で発生した駆動力によってガ
イドシャフト１５、１６に沿って矢印方向に搬送され
る。なお、キャリッジ部材１４には４つのベアリング１
７が回転自在に支持されており、これらのベアリング１
７を介してキャリッジ部材１４はガイドシャフト１５、
１６に沿って移動するものとされている。図３は以上の
キャリッジ機構におけるキャリッジ部材１４を示す平面
図である。同図に示すように、このキャリッジ部材１４
は炭素繊維を複数（本例では３層）積層してなってい
る。各層の炭素繊維の繊維方向は、キャリッジ部材１４
にねじりと曲げの力が加えられたときに発生する応力の
方向に一致させてある。In these drawings, reference numeral 11 denotes a pair of magnetic circuits which are fixed so as to face each other in a casing (not shown).
Reference numeral 12 is a driving coil that generates a driving force with the magnetic circuit 11. The drive coil 12 is fixed to the other end of a carriage member 14 having an optical head 13 mounted on one end. The carriage member 14 is connected to the magnetic circuit 11
It is conveyed in the arrow direction along the guide shafts 15 and 16 by the driving force generated between the driving coil 12 and the driving coil 12. The carriage member 14 has four bearings 1
7 is rotatably supported and these bearings 1
7, the carriage member 14 is connected to the guide shaft 15,
It is supposed to move along 16. FIG. 3 is a plan view showing the carriage member 14 in the above carriage mechanism. As shown in FIG.
Is formed by laminating a plurality of carbon fibers (three layers in this example). The fiber direction of the carbon fiber of each layer is determined by the carriage member 14
The direction of the stress that occurs when a twisting and bending force is applied is applied.
【００１２】すなわち、図４に示すように、キャリッジ
部材１４にねじりモーメントＭｔが加わったときτ１、
τ２のせん断応力が発生する。したがって、これらせん
断応力τ１、τ２の方向に２層の炭素繊維の繊維方向を
それぞれ一致させている。That is, as shown in FIG. 4, when a torsion moment Mt is applied to the carriage member 14, τ1,
A shear stress of τ2 occurs. Therefore, the fiber directions of the two layers of carbon fibers are aligned with the directions of the shear stresses τ1 and τ2, respectively.
【００１３】また図５に示すように、キャリッジ部材１
４に曲げモーメントＭｂが加わったときσの引張り応力
が発生する。したがって、この引張り応力σの方向に残
りの一層の炭素繊維の繊維方向を一致させている。Further, as shown in FIG. 5, the carriage member 1
When a bending moment Mb is applied to 4, a tensile stress of σ is generated. Therefore, the fiber directions of the remaining one layer of carbon fibers are aligned with the direction of this tensile stress σ.
【００１４】炭素繊維は繊維方向の引張り強度が高いた
め、以上のようにして各層の炭素繊維の繊維方向を応力
の方向と一致させることにより、キャリッジ部材１４の
ねじりと曲げに対する剛性はアルミニウムよりもかなり
高いものとなり、二次共振周波数も高くすることができ
る。Since carbon fiber has high tensile strength in the fiber direction, by making the fiber direction of the carbon fiber of each layer coincide with the direction of stress as described above, the rigidity of the carriage member 14 against torsion and bending is higher than that of aluminum. It becomes considerably high, and the secondary resonance frequency can be increased.
【００１５】またキャリッジ部材１４を炭素繊維により
構成することでキャリッジ部材１４を大幅に軽量化する
ことができる。Further, since the carriage member 14 is made of carbon fiber, the weight of the carriage member 14 can be greatly reduced.
【００１６】さらにキャリッジ部材１４を炭素繊維によ
り構成することで、中空断面のキャリッジ部材１４とす
ることも可能になる。Further, if the carriage member 14 is made of carbon fiber, the carriage member 14 having a hollow cross section can be obtained.
【００１７】なお、前記の実施例では、キャリッジ部材
１４をすべて炭素繊維で構成したが、炭素繊維と金属繊
維とを複合化したものであってもよい。これにより金属
と樹脂の中間の性質や導電性をキャリッジ部材１４に持
たせることができる。またこの場合、駆動用コイル１２
への駆動電流をキャリッジ部材１４を通して供給できる
ようになる。さらにアクセス用コイル１２とキャリッジ
部材１４とを一体に形成することが可能になる。Although the carriage member 14 is entirely made of carbon fibers in the above embodiment, it may be made of a composite of carbon fibers and metal fibers. This allows the carriage member 14 to have an intermediate property between metal and resin and conductivity. Further, in this case, the driving coil 12
The drive current to the carriage member 14 can be supplied through the carriage member 14. Furthermore, it becomes possible to integrally form the access coil 12 and the carriage member 14.
【００１８】[0018]
【発明の効果】以上説明したように本発明の光学ヘッド
のキャリッジ機構によれば、キャリッジ部材を炭素繊維
により構成し、ねじりや曲げに対する応力を炭素繊維に
おける繊維方向で受けることにより、軽量でありながら
剛性の高いキャリッジ部材を実現することができる。As described above, according to the carriage mechanism of the optical head of the present invention, the carriage member is made of carbon fiber, and the stress against torsion and bending is applied in the fiber direction of the carbon fiber, so that it is lightweight. However, it is possible to realize a carriage member having high rigidity.
【図１】本発明に係る一実施例の光学ヘッドのキャリッ
ジ機構の構成を説明するための平面図である。FIG. 1 is a plan view illustrating a configuration of a carriage mechanism of an optical head according to an exemplary embodiment of the present invention.
【図２】図１に示す光学ヘッドキャリッジ機構の側面図
である。FIG. 2 is a side view of the optical head carriage mechanism shown in FIG.
【図３】図１の光学ヘッドキャリッジ機構におけるキャ
リッジ部材の構成を示す平面図である。3 is a plan view showing a configuration of a carriage member in the optical head carriage mechanism of FIG.
【図４】図３のキャリッジ部材にねじりモーメントが加
わったときに発生するせん断応力の方向を示す図であ
る。FIG. 4 is a diagram showing directions of shear stress generated when a torsion moment is applied to the carriage member of FIG.
【図５】図３のキャリッジ部材に曲げモーメントが加わ
ったときに発生する引張り応力の方向を示す図である。5 is a diagram showing the direction of tensile stress generated when a bending moment is applied to the carriage member of FIG.
【図６】従来の光学ヘッドのキャリッジ機構の構成を説
明するための平面図である。FIG. 6 is a plan view for explaining the configuration of a carriage mechanism of a conventional optical head.
【図７】図６に示す光学ヘッドキャリッジ機構の側面図
である。7 is a side view of the optical head carriage mechanism shown in FIG.
１１…磁気回路、１２…駆動用コイル、１３…光学ヘッ
ド、１４…キャリッジ部材、１５、１６…ガイドシャフ
ト。11 ... Magnetic circuit, 12 ... Driving coil, 13 ... Optical head, 14 ... Carriage member, 15, 16 ... Guide shaft.
Claims (2)
力を発生するコイルと光学ヘッドとを搭載したキャリッ
ジ部材を、前記磁気回路と前記コイルとの間で発生した
駆動力によりガイド部材に沿って搬送させてなる光学ヘ
ッドのキャリッジ機構において、前記キャリッジ部材が
炭素繊維からなることを特徴とする光学ヘッドのキャリ
ッジ機構。1. A guide for a carriage member, on which a coil for generating a driving force between a magnetic circuit fixed to a housing and an optical head is mounted, by a driving force generated between the magnetic circuit and the coil. A carriage mechanism for an optical head that is conveyed along a member, wherein the carriage member is made of carbon fiber.
力を発生するコイルと光学ヘッドとを搭載したキャリッ
ジ部材を、前記磁気回路と前記コイルとの間で発生した
駆動力によりガイド部材に沿って搬送させてなる光学ヘ
ッドのキャリッジ機構において、前記キャリッジ部材が
炭素繊維と金属繊維との複合化材料からなることを特徴
とする光学ヘッドのキャリッジ機構。2. A guide for a carriage member, on which a coil for generating a driving force between a magnetic circuit fixed to a housing and an optical head is mounted, by a driving force generated between the magnetic circuit and the coil. A carriage mechanism for an optical head that is conveyed along a member, wherein the carriage member is made of a composite material of carbon fiber and metal fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21932692A JPH0668481A (en) | 1992-08-18 | 1992-08-18 | Carriage mechanism for optical head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21932692A JPH0668481A (en) | 1992-08-18 | 1992-08-18 | Carriage mechanism for optical head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0668481A true JPH0668481A (en) | 1994-03-11 |
Family
ID=16733716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21932692A Withdrawn JPH0668481A (en) | 1992-08-18 | 1992-08-18 | Carriage mechanism for optical head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0668481A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6466414B1 (en) * | 2000-08-29 | 2002-10-15 | International Business Machines Corporation | Continuously wound fiber-reinforced disk drive actuator assembly |
-
1992
- 1992-08-18 JP JP21932692A patent/JPH0668481A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6466414B1 (en) * | 2000-08-29 | 2002-10-15 | International Business Machines Corporation | Continuously wound fiber-reinforced disk drive actuator assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19991102 |