JPH06259902A - Reference position detection structure of disk device - Google Patents
Reference position detection structure of disk deviceInfo
- Publication number
- JPH06259902A JPH06259902A JP5044097A JP4409793A JPH06259902A JP H06259902 A JPH06259902 A JP H06259902A JP 5044097 A JP5044097 A JP 5044097A JP 4409793 A JP4409793 A JP 4409793A JP H06259902 A JPH06259902 A JP H06259902A
- Authority
- JP
- Japan
- Prior art keywords
- carriage
- disk device
- reference position
- emitting element
- light
- 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
- 238000001514 detection method Methods 0.000 title claims description 7
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 239000013307 optical fiber Substances 0.000 claims description 4
- 238000007796 conventional method Methods 0.000 description 2
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はディスク装置の基準トラ
ック位置の検出に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to detection of a reference track position of a disk device.
【０００２】[0002]
【従来の技術】従来のディスク装置の基準トラック検出
方法は特開平３−１０５７７１号公報示す物が知られて
おり、より詳しくは図５図６及び図７に示す。図５は従
来のディスク装置のキャリッジ部分の側面図である。ヘ
ッド１を搭載したキャリッジ２は摺動軸受けを内蔵した
軸受け部２ａ，２ｂをガイドするガイド軸３によって図
中左右方向に摺動自在にガイドされている。キャリッジ
２はその移動のためにステッピングモーター（図示せ
ず）によって駆動位置決めされている。また、ガイド軸
３はフレーム４に固定用の板バネ部材５で押圧固定され
ている。フレーム４には回路基板６に取り付けられた検
出器７が設けられている。図７に検出器の断面図を示
す。検出器７は内部にフォトトランジスター８とＬＥＤ
９を内蔵してありスリット７ａにより光の経路を制限し
ている。図５に於いて、キャリッジ２にはシャッター２
ｃが設けてある。図６はスリット部分の詳細側面図であ
る。キャリッジ２の移動により、該検出器７のスリット
７ａをシャッター２ｃが遮り、キャリッジ２が所定のト
ラック位置に移動した事を検知する構造であった。この
時回路基板６はフレーム４にネジ１０により移動自在に
固定して有る。基準位置を検出する場合にネジ１０を緩
め、回路基板を図中左右方向に移動して検出位置の調整
を行っていた。2. Description of the Related Art A conventional method for detecting a reference track of a disk device is known from Japanese Patent Application Laid-Open No. 3-105771. More specifically, it is shown in FIGS. FIG. 5 is a side view of a carriage portion of a conventional disk device. The carriage 2 on which the head 1 is mounted is slidably guided in the left-right direction in the drawing by a guide shaft 3 that guides bearing portions 2a and 2b having built-in sliding bearings. The carriage 2 is driven and positioned by a stepping motor (not shown) for its movement. The guide shaft 3 is pressed and fixed to the frame 4 by a plate spring member 5 for fixing. The frame 4 is provided with a detector 7 attached to the circuit board 6. FIG. 7 shows a sectional view of the detector. The detector 7 has a phototransistor 8 and an LED inside.
9 is built in, and the path of light is limited by the slit 7a. In FIG. 5, the carriage 2 has a shutter 2
c is provided. FIG. 6 is a detailed side view of the slit portion. The shutter 2c blocks the slit 7a of the detector 7 by the movement of the carriage 2 and detects that the carriage 2 has moved to a predetermined track position. At this time, the circuit board 6 is movably fixed to the frame 4 with screws 10. When detecting the reference position, the screw 10 is loosened and the circuit board is moved in the left-right direction in the drawing to adjust the detection position.
【０００３】[0003]
【発明が解決しようとする課題】以上前述した様に従来
の技術では、検出器はフォトトランジスターとＬＥＤを
対向して配置し、スリットはこの間に配置する必要があ
り、検出器の位置がキャリッジに対して制限されてい
た。そこで、本発明は上記の様な課題を解決するもの
で、その目的とするところは、光センサーと発光素子の
配置の自由度を上げる事にある。As described above, in the conventional technique, the phototransistor and the LED are arranged to face each other in the detector, and the slit needs to be arranged between them, and the position of the detector is set on the carriage. It was restricted against it. Therefore, the present invention solves the above problems, and an object thereof is to increase the degree of freedom in the arrangement of the optical sensor and the light emitting element.
【０００４】[0004]
【課題を解決するための手段】本発明のディスク装置の
基準位置検出構造は、円盤状の記録媒体の同心円状の記
録トラックにヘッドを搭載したキャリッジを該記録媒体
にの半径方向に移動位置決めして該ヘッドにより信号の
記録再生を行うディスク装置に於いて、該キャリッジに
搭載された該ヘッドが基準位置に達した事を検知する手
段として光センサーと発光素子を用い、該センサーと発
光素子の間に光を透過ガイドする光路を該キャリッジに
設け、該光路のキャリッジ移動方向の位置を機械的に調
整可能に構成した事を特徴とする。According to a reference position detecting structure of a disk device of the present invention, a carriage having a head mounted on concentric recording tracks of a disk-shaped recording medium is moved and positioned in the radial direction of the recording medium. In a disk device for recording and reproducing a signal by the head, an optical sensor and a light emitting element are used as means for detecting that the head mounted on the carriage has reached a reference position. An optical path that guides light therethrough is provided in the carriage, and the position of the optical path in the carriage movement direction is mechanically adjustable.
【０００５】[0005]
【作用】本発明の上記の構成によれば、光センサーと発
光素子を任意の位置に配置しこの間を光路で結ぶ事によ
り、検出を行うものである。また、光路を機械的に位置
調整する事により、検出位置の調整ができるのである。According to the above configuration of the present invention, the detection is performed by arranging the optical sensor and the light emitting element at arbitrary positions and connecting them with an optical path. Moreover, the detection position can be adjusted by mechanically adjusting the position of the optical path.
【０００６】[0006]
【実施例】以下図面に基づき、本発明を説明する。図１
は本発明のディスク装置のキャリッジの要部断面図，図
２は本発明のディスク装置のセンサー部の要部断面図，
図３は本発明のディスク装置のキャリッジの平面図であ
る。図１に於いて回路基板１０１はフレーム１０２にネ
ジ１０３で固定してある。キャリッジ１０４は従来例で
前述した如くガイド軸１０５にてガイドされている。キ
ャリッジ１０４にはプリズム１０６が一部にバネ性を持
った取付部１０６ａによって移動自在に取り付けてあ
る。プリズム１０６には調整凸１０６ｂが設けてあり、
図３に示す如く治具１０７をプリズム１０６の調整凸１
０６ｂとキャリッジ１０４に設けた調整凹１０４ｂの間
にセットし図中矢印方向に回転調整する事によってプリ
ズム１０６ｂを図１中矢印１０８方向に調整できる構造
である。図２はセンサー部の要部断面図であり図１のＡ
Ａ断面である。回路基板１０１にフォトトランジスター
１０９とＬＥＤ１１０が取り付けてある。キャリッジ１
０４が移動して基準位置に達した場合に、キャリッジに
取り付けたプリズム１０６には入射部分１０６ｃと反射
面１０６ｄと出射部分１０６ｅがあり、ＬＥＤから発射
した光は図中矢印１１１のような経路をたどり、フォト
トランジスター１０９に到達する事により、キャリッジ
１０４が定位置到達した事を知る事ができるのである。
キャリッジ１０４が基準位置に無いときはＬＥＤ１１０
から発した光はフォトトランジスター１０９に到達しな
いため、キャリッジ１０４が基準位置でない事を知る事
ができるのである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. Figure 1
2 is a cross-sectional view of the main part of the carriage of the disk device of the present invention, FIG. 2 is a cross-sectional view of the main part of the sensor portion of the disk device of the present invention,
FIG. 3 is a plan view of the carriage of the disk device of the present invention. In FIG. 1, the circuit board 101 is fixed to the frame 102 with screws 103. The carriage 104 is guided by the guide shaft 105 as described above in the conventional example. A prism 106 is movably attached to the carriage 104 by an attachment portion 106a having a spring property. The prism 106 is provided with an adjusting protrusion 106b,
As shown in FIG. 3, the jig 107 is used to adjust the prism 1.
The structure is such that the prism 106b can be adjusted in the direction of the arrow 108 in FIG. 1 by setting it between the 06b and the adjustment recess 104b provided in the carriage 104 and performing rotation adjustment in the direction of the arrow in the drawing. FIG. 2 is a cross-sectional view of the main part of the sensor section, and FIG.
It is an A section. The phototransistor 109 and the LED 110 are attached to the circuit board 101. Carriage 1
When 04 moves and reaches the reference position, the prism 106 attached to the carriage has an incident portion 106c, a reflecting surface 106d, and an emitting portion 106e, and the light emitted from the LED follows a path indicated by an arrow 111 in the figure. By tracing and reaching the phototransistor 109, it is possible to know that the carriage 104 has reached the fixed position.
LED 110 when carriage 104 is not at the reference position
Since the light emitted from does not reach the phototransistor 109, it can be known that the carriage 104 is not at the reference position.
【０００７】次に本発明に於ける他の実施例を示す。図
４はセンサー部の断面図である。フレーム１０２に取り
付けた回路基板１０１にはＬＥＤ１１０とフォトトラン
ジスター１０９が取り付けてある。キャリッジ１０４が
基準位置にある時、キャリッジ１０４に取り付けてある
光ファイバー１１２の両端面がＬＥＤ１１０とフォトト
ランジスター１０９に対向している。光ファイバー１１
２の端面１１２ａから入射した光は図中矢印１１３の経
路をたどりフォトトランジスター１０９に到達し、前述
の実施例の如くキャリッジ１０４が基準位置にある事を
検知できる。Next, another embodiment of the present invention will be described. FIG. 4 is a sectional view of the sensor unit. An LED 110 and a phototransistor 109 are attached to the circuit board 101 attached to the frame 102. When the carriage 104 is at the reference position, both end surfaces of the optical fiber 112 attached to the carriage 104 face the LED 110 and the phototransistor 109. Optical fiber 11
The light incident from the second end surface 112a reaches the phototransistor 109 by following the path of the arrow 113 in the figure, and it can be detected that the carriage 104 is at the reference position as in the above-described embodiment.
【０００８】[0008]
【発明の効果】以上述べた様に本発明によれば、キャリ
ッジの基準位置を検出する手段として発光素子と受光素
子を用いる物に於いて、発光素子と受光素子の間に光を
透過ガイドする光路を設ける事によって、キャリッジの
基準位置を検出でき、発光素子と受光素子の取付の自由
度を大きくする事ができ、検出器の取付自由度が広く、
ディスク装置の薄型化や小型化に有効である。また、光
路を機械的に調整する事により、センサーの検出位置調
整も容易に行えるという効果を有するものである。As described above, according to the present invention, in the object using the light emitting element and the light receiving element as the means for detecting the reference position of the carriage, the light is transmitted and guided between the light emitting element and the light receiving element. By providing the optical path, it is possible to detect the reference position of the carriage, increase the degree of freedom in mounting the light emitting element and the light receiving element, and increase the degree of freedom in mounting the detector.
It is effective for thinning and miniaturizing the disk device. In addition, by mechanically adjusting the optical path, the detection position of the sensor can be easily adjusted.
【図１】 本発明のディスク装置のキャリッジの要部断
面図である。FIG. 1 is a sectional view of an essential part of a carriage of a disk device according to the present invention.
【図２】 本発明のディスク装置のセンサー部の要部断
面図である。FIG. 2 is a sectional view of an essential part of a sensor section of the disk device of the present invention.
【図３】 本発明のディスク装置のキャリッジの要部平
面図である。FIG. 3 is a plan view of a main part of a carriage of the disk device according to the present invention.
【図４】 本発明のディスク装置のセンサー部の要部断
面図である。FIG. 4 is a cross-sectional view of essential parts of a sensor unit of the disk device of the present invention.
【図５】 従来のディスク装置のキャリッジ部分の側面
図である。FIG. 5 is a side view of a carriage portion of a conventional disk device.
【図６】 従来のディスク装置のスリット部分の詳細側
面図である。FIG. 6 is a detailed side view of a slit portion of a conventional disc device.
【図７】 従来のディスク装置に於ける検出器の断面図
を示す。FIG. 7 is a sectional view of a detector in a conventional disk device.
１０１ 回路基板 １０４ キャリッジ １０６ プリズム １０９ フォトトランジスター １１０ ＬＥＤ １１２ 光ファイバー 101 circuit board 104 carriage 106 prism 109 phototransistor 110 LED 112 optical fiber
Claims (3)
クにヘッドを搭載したキャリッジを該記録媒体の半径方
向に移動位置決めして該ヘッドにより信号の記録再生を
行うディスク装置に於いて、該キャリッジに搭載された
該ヘッドが基準位置に達した事を検知する手段として光
センサーと発光素子を用い、該センサーと発光素子の間
に光を透過ガイドする光路を該キャリッジに設け、該光
路のキャリッジ移動方向の位置を機械的に調整可能に構
成した事を特徴とするディスク装置の基準位置検出構
造。1. A disk device for recording and reproducing a signal by moving and positioning a carriage having a head mounted on a concentric recording track of a disk-shaped recording medium in the radial direction of the recording medium. An optical sensor and a light emitting element are used as means for detecting that the head mounted on the carriage has reached a reference position, and an optical path for transmitting and guiding light is provided in the carriage between the sensor and the light emitting element. A reference position detection structure for a disk device, characterized in that the position in the carriage movement direction is mechanically adjustable.
ドする光路をプリズムによって構成した事を特徴とする
請求項１記載のディスク装置の基準位置検出構造。2. A reference position detecting structure for a disk device according to claim 1, wherein an optical path for transmitting and guiding light between the sensor and the light emitting element is constituted by a prism.
ドする光路を光ファイバーによって構成した事を特徴と
する請求項１記載のディスク装置の基準位置検出構造。3. The reference position detecting structure for a disk device according to claim 1, wherein an optical path for transmitting and guiding light between the sensor and the light emitting element is constituted by an optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5044097A JPH06259902A (en) | 1993-03-04 | 1993-03-04 | Reference position detection structure of disk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5044097A JPH06259902A (en) | 1993-03-04 | 1993-03-04 | Reference position detection structure of disk device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06259902A true JPH06259902A (en) | 1994-09-16 |
Family
ID=12682119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5044097A Pending JPH06259902A (en) | 1993-03-04 | 1993-03-04 | Reference position detection structure of disk device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06259902A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6836015B2 (en) | 2003-05-02 | 2004-12-28 | International Business Machines Corporation | Optical assemblies for transmitting and manipulating optical beams |
| US6922294B2 (en) | 2003-05-02 | 2005-07-26 | International Business Machines Corporation | Optical communication assembly |
-
1993
- 1993-03-04 JP JP5044097A patent/JPH06259902A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6836015B2 (en) | 2003-05-02 | 2004-12-28 | International Business Machines Corporation | Optical assemblies for transmitting and manipulating optical beams |
| US6922294B2 (en) | 2003-05-02 | 2005-07-26 | International Business Machines Corporation | Optical communication assembly |
| US8089133B2 (en) | 2003-05-02 | 2012-01-03 | International Business Machines Corporation | Optical assemblies for transmitting and manipulating optical beams |
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