JPS60191479A - Feeding mechanism for optical head - Google Patents
Feeding mechanism for optical headInfo
- Publication number
- JPS60191479A JPS60191479A JP4733184A JP4733184A JPS60191479A JP S60191479 A JPS60191479 A JP S60191479A JP 4733184 A JP4733184 A JP 4733184A JP 4733184 A JP4733184 A JP 4733184A JP S60191479 A JPS60191479 A JP S60191479A
- Authority
- JP
- Japan
- Prior art keywords
- pickup device
- optical head
- feed screw
- device body
- disk
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/0857—Arrangements for mechanically moving the whole head
- G11B7/08582—Sled-type positioners
Landscapes
- Moving Of Heads (AREA)
Abstract
Description
【発明の詳細な説明】
く技術分野〉
末完Ｆ！Ａはディスク盤面上に記録された信号をディス
ク盤面にレーザー光線を照射することによって読み取り
、音声１画像等を再生できる光学式のディスク装置に関
し、特に光学ヘッドの送り機構の構成の改良に関する。[Detailed description of the invention] Technical field> Suekan F! A relates to an optical disc device that can read signals recorded on a disc surface by irradiating a laser beam onto the disc surface and reproduce audio, images, etc., and particularly relates to an improvement in the configuration of an optical head feeding mechanism.
〈従来技術〉
従来、光学式のディスク装置においては、盤面に多数の
ピットを記録したディスクを用い、このディスクを高速
回転させた状態でディスク盤面に光学ヘッドからレーザ
ー光線を照射し、この反射光の変化を光学ヘッドによっ
て光学的に読み取り光を電気信号に変換することで音声
１画像等を再生する方式のものが多かった。この方式の
ディスク装置は上記した光学ヘッドをディスクの半径方
向にディスクと相対的に移動させてディスクの情報記録
トラックに追従させることによって逐次情報の読み取り
を行なうものであるが情報記録トラックは極めて密に構
成されているので光学ヘッドの移動を極めて円滑に打力
わせ々ければならない。<Prior art> Conventionally, optical disk devices use a disk with many pits recorded on its surface, and while the disk is rotating at high speed, an optical head irradiates the disk surface with a laser beam, and the reflected light is Many of the systems reproduced audio, images, etc. by optically reading the changes using an optical head and converting the light into electrical signals. This type of disk device sequentially reads information by moving the optical head described above in the radial direction of the disk relative to the disk to follow the information recording track of the disk, but the information recording track is extremely dense. Since the optical head is constructed as follows, the movement of the optical head must be extremely smooth and the striking force must be increased.
ここで従来では光学ヘッドの移動を円滑にする為に光学
ヘッドを支持するガイドシャフトとスライダーの間にコ
ロを介在させてスライドが円滑にできるようにしたもの
があったが、この機構ではリニアスライダーという高価
な部品が必要であると共に取付調整も複雑となるという
欠点がある。Conventionally, in order to make the movement of the optical head smooth, rollers were interposed between the guide shaft that supports the optical head and the slider to ensure smooth sliding, but in this mechanism, the linear slider The disadvantage is that it requires expensive parts and requires complicated installation and adjustment.
又、他の手段としてラックと歯車を用い駆動モーターか
らの回転運動を往復運動に変換して光学ヘッドを駆動す
るようにしたものもあったが、この機構では上記駆動モ
ーターからの減速比を大きくとる必要性があることから
歯車を数多く必要とし同時に歯車かみ合い部でのバック
ラッシュを除去する機構も必要となった。There was also another method that used a rack and gears to convert the rotational motion from the drive motor into reciprocating motion to drive the optical head, but this mechanism required a large reduction ratio from the drive motor. Because of the need for a large number of gears, a mechanism to eliminate backlash at the meshing part of the gears was also required.
く目 的〉
本発明は以上の従来問題点に鑑みなされたものであり光
学式のディスク装置における光学へ・ノドの送り機構の
部品点数を大幅に削減できる新規な構造を提供すること
をその目的とするものである。Purpose of the present invention The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a new structure that can significantly reduce the number of parts of the optical/gutter feeding mechanism in an optical disk device. That is.
〈実施例〉
以下、本発明に係る光学ヘッドの送り機構の一実施例に
ついて図面を用いて詳細に説明する。<Embodiment> Hereinafter, an embodiment of the optical head feeding mechanism according to the present invention will be described in detail with reference to the drawings.
まず光学ヘッドの送り機構の全体構成について説明を行
なう。第１図は全体構成を示す外観斜視図である。メイ
ンシャーシー１の中央部位置には光ディスク２を高速回
転せしめるスピンドルモーター３が突出し、該スピンド
ルモーター３のシャフト先端部には光ディスク２を保持
するターンテーブル４が固定されている。光ディスク２
は係るターンテーブル４に設置されて回転する。上記メ
録・再生を行なう為のピックアップ装置本体５が光ディ
スク２の半径方向に移動できる様に孔６が形成されてい
る。この孔６上部の片側には上記ピックアップ装置本体
５の軸受を貫通し該ピックアップ装置本体５をディスク
半径方向に摺動可能に支持するがイドシャフト７が設け
られる。一方、上記孔６の他の側には上記ピックアップ
装置本体５を摺動可能に支持すると共に上記ピックアッ
プ装置本体５を駆動する送りネジ９が設けられる。First, the overall configuration of the optical head feeding mechanism will be explained. FIG. 1 is an external perspective view showing the overall configuration. A spindle motor 3 for rotating an optical disk 2 at high speed protrudes from the center of the main chassis 1, and a turntable 4 for holding the optical disk 2 is fixed to the tip of the shaft of the spindle motor 3. optical disc 2
is installed on the turntable 4 and rotates. A hole 6 is formed so that a pickup device main body 5 for performing the above-mentioned recording and reproduction can be moved in the radial direction of the optical disc 2. An id shaft 7 is provided on one side of the upper part of the hole 6, passing through a bearing of the pickup device main body 5 and supporting the pickup device main body 5 so as to be slidable in the disk radial direction. On the other hand, on the other side of the hole 6, there is provided a feed screw 9 that slidably supports the pickup device main body 5 and drives the pickup device main body 5.
該送りネジ９は駆動モーター８によって回転駆動せられ
る。The feed screw 9 is rotationally driven by a drive motor 8.
第２図にピックアップ装置本体５の側面図を示し、第３
図に送りネジ９とピックア・ｙプ装置本体５の係合部分
の外観斜視図を示す。同図に示される様にピックアップ
装置本体５の内部には送りネジ９と係合するハーフナラ
）１０が固定的に設けられる。このハーフナツト１０は
板バネ１１の作用によって送りネジ９との係合が強めら
り、ている。FIG. 2 shows a side view of the pickup device main body 5, and the third
The figure shows an external perspective view of the engaging portion between the feed screw 9 and the pick-up device main body 5. As shown in the figure, a half lug 10 that engages with a feed screw 9 is fixedly provided inside the pickup device main body 5. The engagement of the half nut 10 with the feed screw 9 is strengthened by the action of the leaf spring 11.
又ピックアップ装置本体５側には当りガイド１２ている
。この当りガイド１２はルーロン等の摩擦抵抗の少ない
プラスチック材で構成されガイドシャフト７に対する当
りガイドとしても機能する。Further, a hit guide 12 is provided on the pickup device main body 5 side. The contact guide 12 is made of a plastic material with low frictional resistance, such as Lulon, and also functions as a contact guide for the guide shaft 7.
１３はガイドシャフト７に対する軸受メタルである。13 is a bearing metal for the guide shaft 7.
ここで上記送りネジ９は回転運動するが該送りネジ９に
対するネジ加工後、該送りネジ９の当りガイド１２と接
触する外周面を研削加工することによって送りネジ９の
回転時での振れを除去できる。この加工を行なえばガイ
ドシャフト７と同精度の機能を果たすことができる。又
、ピックアップ装置本体５に固定されるハーフナツト１
０け板バネ１１上に固定され、該板バネ１１は固定ビス
１４によって取りはずし自在な構成となっているので５
組立時、調整時等に作業員が簡易に送りネジ９とハーフ
ナツト１０の間の係合を解除でき。Here, the feed screw 9 rotates, but after the feed screw 9 is machined, the outer circumferential surface of the feed screw 9 that comes into contact with the contact guide 12 is ground to eliminate vibrations when the feed screw 9 rotates. can. By performing this processing, it can function with the same precision as the guide shaft 7. Further, a half nut 1 fixed to the pickup device main body 5
It is fixed on a leaf spring 11, and the leaf spring 11 is configured to be removable with a fixing screw 14.
A worker can easily release the engagement between the feed screw 9 and the half nut 10 during assembly, adjustment, etc.
又任意の位置に設置することができる。これに対してハ
ーフナツトがピックアップ装置本体に固定的に組込拷れ
た一体構造のものでは送りネジ９を回転させ々ければピ
ックアップ装置本体が移動できず、作業性が著しく劣化
する。Also, it can be installed at any position. On the other hand, in the case of an integral structure in which the half nut is fixedly assembled into the pickup device main body, the pickup device main body cannot be moved unless the feed screw 9 is rotated too much, resulting in a significant deterioration in workability.
〈効 果〉
以上詳細に説明した本発明によれば、光学ヘッドに組み
込まれたハーフナツトと係合し、その回転によって前記
光学ヘッドを移動せしめる送りネジを、前記光学ヘッド
の支持体として兼用したので部品点数を大幅に削減でき
コストの低下を実現できるものである。<Effects> According to the present invention described in detail above, the feed screw that engages with the half nut incorporated in the optical head and moves the optical head by its rotation also serves as a support for the optical head. It is possible to significantly reduce the number of parts and reduce costs.
第１図は本発明に係る光学ヘッドの送り機構の一実施例
の外観斜視図２第２図はピックアップ装置本体の側面図
、第３図は送りネジとピックアップ装置本体の結合部分
の外観斜視図を示す。
図中、■＝メインシャーシー、２：光ディスク、３ニス
ピンドルモーター、４：ターンテーブヲ５：ピックアッ
プ装置本体、 ６：孔、７：ガイドシャフト、８：駆動
モーター、９：送りネジ、 １０：ハーフナツト、１１
：板バネ、 １２：当りガイド、
１３：軸受メタル、１４：固定ビス。Fig. 1 is an external perspective view of an embodiment of the optical head feeding mechanism according to the present invention; 2) Fig. 2 is a side view of the pickup device main body; and Fig. 3 is an external perspective view of the connecting portion between the feed screw and the pickup device main body. shows. In the figure, ■ = main chassis, 2: optical disc, 3 spindle motor, 4: turntable, 5: pickup device body, 6: hole, 7: guide shaft, 8: drive motor, 9: feed screw, 10: half nut, 11
: Leaf spring, 12: Hit guide, 13: Bearing metal, 14: Fixing screw.
Claims (1)
その回転によって前記光学ヘッドを移動せしめる送りネ
ジを、前記光学ヘッドの支持体として兼用したことを特
徴とする光学ヘッドの送り機構。1 Engages with a half nut built into the optical head,
A feeding mechanism for an optical head, characterized in that a feed screw that moves the optical head by its rotation also serves as a support for the optical head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4733184A JPS60191479A (en) | 1984-03-12 | 1984-03-12 | Feeding mechanism for optical head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4733184A JPS60191479A (en) | 1984-03-12 | 1984-03-12 | Feeding mechanism for optical head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60191479A true JPS60191479A (en) | 1985-09-28 |
Family
ID=12772242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4733184A Pending JPS60191479A (en) | 1984-03-12 | 1984-03-12 | Feeding mechanism for optical head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60191479A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6292180A (en) * | 1985-10-17 | 1987-04-27 | Canon Inc | Information recording and reproducing device |
| JPS6292181A (en) * | 1985-10-17 | 1987-04-27 | Canon Inc | Information recording and reproducing device |
| JPS6352177U (en) * | 1986-09-25 | 1988-04-08 | ||
| JPS63269381A (en) * | 1987-04-27 | 1988-11-07 | Canon Inc | Head feed device |
| JPS6437967U (en) * | 1987-08-28 | 1989-03-07 | ||
| US5175723A (en) * | 1990-06-20 | 1992-12-29 | Avnet, Inc. | Direct drive mechanism for data pickup carriage with no direct attachment between motor and frame |
| US5926451A (en) * | 1996-03-27 | 1999-07-20 | Ricoh Co., Ltd. | Optical disk unit having reduced wobble |
| EP2128861A1 (en) * | 2008-05-19 | 2009-12-02 | Funai Electric Co., Ltd. | Lens drive mechanism and optical pickup having same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5794158A (en) * | 1980-11-29 | 1982-06-11 | Ricoh Co Ltd | Carriage driving device |
| JPS5817571A (en) * | 1981-07-23 | 1983-02-01 | Toshiba Corp | Head structure of recording and reproducing device |
-
1984
- 1984-03-12 JP JP4733184A patent/JPS60191479A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5794158A (en) * | 1980-11-29 | 1982-06-11 | Ricoh Co Ltd | Carriage driving device |
| JPS5817571A (en) * | 1981-07-23 | 1983-02-01 | Toshiba Corp | Head structure of recording and reproducing device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6292180A (en) * | 1985-10-17 | 1987-04-27 | Canon Inc | Information recording and reproducing device |
| JPS6292181A (en) * | 1985-10-17 | 1987-04-27 | Canon Inc | Information recording and reproducing device |
| JPS6352177U (en) * | 1986-09-25 | 1988-04-08 | ||
| JPS63269381A (en) * | 1987-04-27 | 1988-11-07 | Canon Inc | Head feed device |
| JP2568197B2 (en) * | 1987-04-27 | 1996-12-25 | キヤノン株式会社 | Head feeder |
| JPS6437967U (en) * | 1987-08-28 | 1989-03-07 | ||
| US5175723A (en) * | 1990-06-20 | 1992-12-29 | Avnet, Inc. | Direct drive mechanism for data pickup carriage with no direct attachment between motor and frame |
| US5926451A (en) * | 1996-03-27 | 1999-07-20 | Ricoh Co., Ltd. | Optical disk unit having reduced wobble |
| EP2128861A1 (en) * | 2008-05-19 | 2009-12-02 | Funai Electric Co., Ltd. | Lens drive mechanism and optical pickup having same |
| US8004773B2 (en) | 2008-05-19 | 2011-08-23 | Funai Electric Co., Ltd. | Lens drive mechanism and optical pickup having same |
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