JPH01106372A - Optical recording and reproducing device - Google Patents
Optical recording and reproducing deviceInfo
- Publication number
- JPH01106372A JPH01106372A JP26442487A JP26442487A JPH01106372A JP H01106372 A JPH01106372 A JP H01106372A JP 26442487 A JP26442487 A JP 26442487A JP 26442487 A JP26442487 A JP 26442487A JP H01106372 A JPH01106372 A JP H01106372A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- optical head
- permanent magnet
- guide rail
- optical recording
- 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 title claims abstract description 62
- 230000005520 electrodynamics Effects 0.000 claims abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000036316 preload Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 241001061264 Astragalus Species 0.000 description 1
- 235000006533 astragalus Nutrition 0.000 description 1
- 210000004233 talus Anatomy 0.000 description 1
Landscapes
- Moving Of Heads (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は光学的に情報を記録あるいは再生するる装置の
光学式記録再生装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an optical recording/reproducing device for optically recording or reproducing information.
従来の技術
光学式記録再生装置は、光磁気ディスクなどの円盤状記
録媒体の反りの上下運動によるフォーカスずれや偏心等
によるトラッキングずれを補正するために、対物レンズ
を円盤状記録媒体面に対して垂直な、方向の光軸方向（
以下フォーカス方向ｙという］および前記記録媒体面に
対して平行な方向の半径方向（以下トラッキング方向で
という）の２軸に駆動する対物レンズ駆動装置と前記対
物レンズに光ビームを入射させるための光学ブロックか
らなる光学ヘッドを、トラッキング方向Ｔに沿って移動
させ、前記円盤状記録媒体上に光学的に情報を記録再生
する。Conventional technology Optical recording and reproducing devices are designed to correct tracking deviations caused by eccentricity and focus shifts caused by vertical movement of warped disk-shaped recording media such as magneto-optical disks. Vertical, optical axis direction (
an objective lens driving device that drives in two axes: a focus direction (hereinafter referred to as y) and a radial direction parallel to the recording medium surface (hereinafter referred to as a tracking direction); and an optical system for making a light beam incident on the objective lens. An optical head consisting of a block is moved along the tracking direction T to optically record and reproduce information on the disc-shaped recording medium.
従来のこの種の光学式記録再生装置は第３図のように構
成されていた。A conventional optical recording/reproducing apparatus of this type was constructed as shown in FIG.
すなわち、対物レンズをフォーカス方向Ｆおよびトラッ
キング方向Ｔに駆動する対物レンズ駆動装置１と、対物
レンズに光ビームを入射させ光学的情報を検出する光学
ブロック２からなる光学ヘッドに駆動コイル８ａ、８ｂ
を取り付けた光学式記録再生装置が、円盤状記録媒体１
２の媒体面に対して平行に配置された２本の平行なガイ
ド棒１１！Ｌ、１１ｂにボールベアリング７１Ｌ〜７ｈ
を介して取り付けられており、板バネ１３を介したボー
ルベアリング７ｂ、７ｄによってプリロード力を与えら
れている。かつ、磁石９１Ｌ、９ｂと磁気ヨーク１０＆
、１０ｂからなる磁気回路の空隙中に、駆動コイルｓａ
、ｓｂを配置した動電型変換器によって円盤状記録媒体
１２のアクセス方向ムｄ（）ラッキング方向Ｔと同方向
）にアクセス駆動している。That is, drive coils 8a and 8b are attached to an optical head consisting of an objective lens drive device 1 that drives the objective lens in the focusing direction F and the tracking direction T, and an optical block 2 that makes a light beam enter the objective lens and detects optical information.
The optical recording/reproducing device equipped with the disk-shaped recording medium 1
Two parallel guide rods 11 arranged parallel to the medium plane of No. 2! Ball bearings 71L to 7h on L and 11b
A preload force is applied by ball bearings 7b and 7d via a leaf spring 13. And magnets 91L, 9b and magnetic yoke 10&
, 10b, the drive coil sa
, sb are arranged to drive access to the disc-shaped recording medium 12 in the access direction d (the same direction as the racking direction T).
発明が解決しようとする問題点
しかしながら上記のような構造の光学式記録再生装置で
は、アクセス駆動時の摩擦を低減するためにボールベア
リング７ａ〜７ｈを設置し、かつ、板バネ１３によって
プリロードを与え、アクセス駆動時の光学式記録再生装
置の余分な振動を吸収している。しかしながら、ガイド
棒１１ａ、１１ｂで光学式記録再生装置を支持する際に
多数のボールベアリング（８個）が必要であシ、また、
摩擦が少ないとはいえボールベアリングは接触式である
から、長時間の使用によっては特性の劣化、接触部分の
摩耗は避けられない。Problems to be Solved by the Invention However, in the optical recording/reproducing device having the above structure, ball bearings 7a to 7h are installed to reduce friction during access drive, and a preload is applied by the leaf spring 13. , which absorbs excess vibration of the optical recording/reproducing device during access drive. However, when supporting the optical recording/reproducing device with the guide rods 11a and 11b, a large number of ball bearings (8 pieces) are required.
Although the friction is low, ball bearings are contact type, so it is inevitable that their characteristics will deteriorate and the contact parts will wear out over long periods of use.
そこで１本発明の目的は部品点数が少なく、摩擦や摩耗
の序い信頼性の高い支持手段を持った光学式記録再生装
置を提供するものである。Accordingly, one object of the present invention is to provide an optical recording/reproducing device having a small number of parts and having a supporting means that is highly reliable in terms of friction and wear.
問題点を解決するだめの手段 前記問題点を解決する本発明の技術的な手段は。A foolproof way to solve problems Technical means of the present invention to solve the above problems are as follows.
光学式記録再生装置に取り付けられた永久磁石と、ガイ
ドレールに取り付けられた永久磁石との反発によって、
光学式記録再生装置を非接触に浮上支持する構成となっ
ている。Due to the repulsion between the permanent magnet attached to the optical recording/reproducing device and the permanent magnet attached to the guide rail,
It is configured to levitate and support the optical recording/reproducing device in a non-contact manner.
作用
この技術的手段によって、光学式記録再生装置は多くの
ベアリングをなくすことができると同時にガイドレール
への組み込みや、調整が容易に行える。しかも、非接触
であるため摩擦や摩耗がなく信頼性が向上する。Effect: With this technical means, the optical recording and reproducing device can eliminate many bearings and at the same time can be easily integrated into the guide rail and adjusted. Moreover, since it is non-contact, there is no friction or wear, improving reliability.
実施例 以下、本発明の実施例を図面に基づいて説明する。Example Embodiments of the present invention will be described below based on the drawings.
第１図は本発明の一実施例の光学式記録再生装置の斜視
図である。FIG. 1 is a perspective view of an optical recording/reproducing apparatus according to an embodiment of the present invention.
対物レンズをフォーカス方向Ｆおよびトラッキング方向
Ｔに駆動する対物レンゲ駆動装置１と対物レンズに光ビ
ームを入射させ光学的情報を検出する光学ブロック２か
らなる光学ヘッドが、永久磁石からなるガイドレール５
ａ、５ｂと光学式記録再生装置の左右前後にそれぞれ取
り付けられた永久磁石３ａ〜３ｄとから生じる反発力に
よって円盤状記録媒体１２のトラッキング方向で以外の
方向への変位を規制されて浮上支持されている。The optical head consists of an objective astragalus drive device 1 that drives the objective lens in the focusing direction F and the tracking direction T, and an optical block 2 that detects optical information by making a light beam enter the objective lens, and a guide rail 5 that is made of a permanent magnet.
a, 5b and permanent magnets 3a to 3d attached to the left and right front and back of the optical recording/reproducing device, respectively.The disc-shaped recording medium 12 is suspended and supported while being prevented from being displaced in any direction other than the tracking direction. ing.
この時、第２図に示すように、光学ヘッドには駆動コイ
ル４Ｌ、４ｂが取り付けられ、駆動コイル４１Ｌ、４ｂ
がガイドレールｓａ、ｅｓｂと対向磁石６ａ〜６ｄによ
って生じる磁界中に配置された動電型変換器によってア
クセス方向Ａｄにアクセス駆動している。したがって、
光学ヘッドはガイドレール５ａ、ｓｂに接触しておらず
摩擦や摩耗がなく信頼性が向上する。また、ボールベア
リングを使う必要がなく、板バネなどを用いてプリロー
ドを与えることもないため部品点数の削減が達成できる
と同時に、システムへの組み込みが容易である。さらに
、第３図に示す従、来の光学式記録再生装置に比べ、ガ
イド棒１１１Ｌ、１１ｂと光学式記録再生装置をアクセ
ス方向に駆動するための磁気ヨーク１０＆ 、１０ｂが
兼用になっているため、システム全体に対する光学式記
録再生装置の小型化が達成できる。At this time, as shown in FIG. 2, drive coils 4L and 4b are attached to the optical head, and drive coils 41L and 4b are attached to the optical head.
is access-driven in the access direction Ad by an electrodynamic converter placed in a magnetic field generated by the guide rails sa, esb and the opposing magnets 6a to 6d. therefore,
The optical head is not in contact with the guide rails 5a and sb, so there is no friction or wear, and reliability is improved. In addition, there is no need to use ball bearings, and there is no need to apply preload using leaf springs, etc., so the number of parts can be reduced, and at the same time it can be easily incorporated into a system. Furthermore, compared to the conventional optical recording/reproducing apparatus shown in FIG. 3, the guide rods 111L, 11b and the magnetic yokes 10&, 10b for driving the optical recording/reproducing apparatus in the access direction are used in common. , it is possible to achieve miniaturization of the optical recording/reproducing device for the entire system.
発明の効果
本発明は、対物レンズをフォーカス方向ｙおよびトラッ
キング方向Ｔに駆動する対物レンズ駆動装置と、対物レ
ンズに光ビームを入射させ光学的情報を検出する光学ブ
ロックからなる光学ヘッドに駆動コイルを取り付け、円
盤状記録媒体のアクセス方向にガイドレールに沿って駆
動する機構を有する光学式記録再生装置において、前記
光学式記録再生装置に取り付けられた永久磁石と前記ガ
イドレールに取り付けられた永久磁石との反発力によっ
て、前記光学式記録再生装置を非接触に支持し摩擦や摩
耗のない信頼性の高い光学式記録再生装置の設計を可能
にする。Effects of the Invention The present invention provides a drive coil for an optical head consisting of an objective lens drive device that drives an objective lens in the focus direction y and tracking direction T, and an optical block that makes a light beam enter the objective lens and detects optical information. In an optical recording/reproducing device having a mechanism for driving along a guide rail in the access direction of a disk-shaped recording medium, a permanent magnet attached to the optical recording/reproducing device and a permanent magnet attached to the guide rail. The repulsive force supports the optical recording and reproducing device in a non-contact manner, making it possible to design a highly reliable optical recording and reproducing device free from friction and wear.
第１図は本発明の一実施例における光学式記録再生装置
の斜視図、第２図は本実施例における光学式記録再生装
置の構成を示す正面図、第３図は従来の光学式記録再生
装置の構成を示す正面図である。
１・・・・・・対物レンズ駆動装置、２・・・・・・光
学ブロック、３ａ、３ｂ・・・・・・永久磁石１，４ａ
、４ｂ・・・・・・駆動コイル、ｓａ、ｓｂ・・・・・
・ガイドレール、θ＆〜６ｄ・・・・・・対向磁石、７
ａ〜７ｈ・・・・・・ポールベアリング、ｓａ、ｓｂ・
・・・・・駆動コイル、９１Ｌ 、９ｂ・・・・・・磁
石、１０＆、１０ｂ・・・・・・磁気ヨーク、１１１Ｌ
。
１１ｂ・・・・・・ガイド棒、１２・・・・・・円盤状
記録媒体、１３・・・・・・板バネ。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
ｓｂ
第２図
第３図FIG. 1 is a perspective view of an optical recording and reproducing device according to an embodiment of the present invention, FIG. 2 is a front view showing the configuration of the optical recording and reproducing device according to this embodiment, and FIG. 3 is a conventional optical recording and reproducing device. FIG. 2 is a front view showing the configuration of the device. 1...Objective lens drive device, 2...Optical block, 3a, 3b...Permanent magnets 1, 4a
, 4b... Drive coil, sa, sb...
・Guide rail, θ & ~6d... Opposing magnet, 7
a~7h・・・Pole bearing, sa, sb・
...Drive coil, 91L, 9b...Magnet, 10&, 10b...Magnetic yoke, 111L
. 11b... Guide rod, 12... Disk-shaped recording medium, 13... Leaf spring. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure sb Figure 2 Figure 3
Claims (3)
機能を有する光学ヘッドを、前記円盤状記録媒体の半径
方向に記録媒体面に略平行に移動させるための駆動手段
を具備し、前記光学ヘッドが前記半径方向のみに移動す
るように、前記光学ヘッドを支持する支持手段を有し、
前記支持手段として、前記半径方向に延びたガイドレー
ルの前記光学ヘッドに対向する面にガイドレール用永久
磁石が取り付けられ、前記光学ヘッドには前記ガイドレ
ール用永久磁石と同極を対向させた光学ヘッド用永久磁
石が取り付けられ、前記ガイドレール用永久磁石と前記
光学ヘッド用永久磁石によって発生する反発力によって
、前記光学ヘッドを非接触で支持したことを特徴とする
光学式記録再生装置。(1) comprising a drive means for moving an optical head having a function of optically recording and reproducing information on a disk-shaped recording medium in a radial direction of the disk-shaped recording medium substantially parallel to the surface of the recording medium; comprising support means for supporting the optical head so that the optical head moves only in the radial direction;
As the supporting means, a guide rail permanent magnet is attached to the surface of the guide rail extending in the radial direction facing the optical head, and the optical head has an optical magnet having the same polarity facing the guide rail permanent magnet. What is claimed is: 1. An optical recording and reproducing apparatus, characterized in that a permanent magnet for a head is attached, and the optical head is supported in a non-contact manner by a repulsive force generated by the permanent magnet for a guide rail and the permanent magnet for an optical head.
する特許請求の範囲第１項記載の光学式記録再生装置。(2) The optical recording/reproducing device according to claim 1, wherein the guide rail is made of a permanent magnet.
磁石によって生じる磁界中に駆動用コイルを配置した動
電型変換器によって、光学ヘッドをガイドレールに沿っ
て円盤状記録媒体の半径方向に駆動することを特徴とす
る特許請求の範囲第１項記載の光学式記録再生装置。(3) The optical head is driven in the radial direction of the disc-shaped recording medium along the guide rail by an electrodynamic transducer in which a driving coil is placed in the magnetic field generated by the permanent magnet for the guide rail or the permanent magnet for the optical head. An optical recording/reproducing apparatus according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26442487A JPH01106372A (en) | 1987-10-20 | 1987-10-20 | Optical recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26442487A JPH01106372A (en) | 1987-10-20 | 1987-10-20 | Optical recording and reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01106372A true JPH01106372A (en) | 1989-04-24 |
Family
ID=17402983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26442487A Pending JPH01106372A (en) | 1987-10-20 | 1987-10-20 | Optical recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01106372A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5191570A (en) * | 1989-11-07 | 1993-03-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical head locating mechanism for magnetically locating an optical head |
| US6026064A (en) * | 1997-05-01 | 2000-02-15 | Fujitsu Limited | Head driving apparatus and optical disk apparatus |
| WO2010084702A1 (en) * | 2009-01-23 | 2010-07-29 | 日本電産サンキョー株式会社 | Lens driving device |
| WO2010084703A1 (en) * | 2009-01-23 | 2010-07-29 | 日本電産サンキョー株式会社 | Lens driving device |
| JP2010286507A (en) * | 2009-06-09 | 2010-12-24 | Nidec Sankyo Corp | Lens driving device |
| JP2010286508A (en) * | 2009-06-09 | 2010-12-24 | Nidec Sankyo Corp | Lens drive device |
| JP2011039424A (en) * | 2009-08-18 | 2011-02-24 | Nidec Sankyo Corp | Lens drive device |
| JP2011039426A (en) * | 2009-08-18 | 2011-02-24 | Nidec Sankyo Corp | Lens drive device |
| JP2011039425A (en) * | 2009-08-18 | 2011-02-24 | Nidec Sankyo Corp | Lens drive device |
-
1987
- 1987-10-20 JP JP26442487A patent/JPH01106372A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5191570A (en) * | 1989-11-07 | 1993-03-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical head locating mechanism for magnetically locating an optical head |
| US6026064A (en) * | 1997-05-01 | 2000-02-15 | Fujitsu Limited | Head driving apparatus and optical disk apparatus |
| WO2010084702A1 (en) * | 2009-01-23 | 2010-07-29 | 日本電産サンキョー株式会社 | Lens driving device |
| WO2010084703A1 (en) * | 2009-01-23 | 2010-07-29 | 日本電産サンキョー株式会社 | Lens driving device |
| JP2010286507A (en) * | 2009-06-09 | 2010-12-24 | Nidec Sankyo Corp | Lens driving device |
| JP2010286508A (en) * | 2009-06-09 | 2010-12-24 | Nidec Sankyo Corp | Lens drive device |
| JP2011039424A (en) * | 2009-08-18 | 2011-02-24 | Nidec Sankyo Corp | Lens drive device |
| JP2011039426A (en) * | 2009-08-18 | 2011-02-24 | Nidec Sankyo Corp | Lens drive device |
| JP2011039425A (en) * | 2009-08-18 | 2011-02-24 | Nidec Sankyo Corp | Lens drive device |
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