JPS60261012A - Shield structure of servo head - Google Patents

Shield structure of servo head

Info

Publication number
JPS60261012A
JPS60261012A JP11602384A JP11602384A JPS60261012A JP S60261012 A JPS60261012 A JP S60261012A JP 11602384 A JP11602384 A JP 11602384A JP 11602384 A JP11602384 A JP 11602384A JP S60261012 A JPS60261012 A JP S60261012A
Authority
JP
Japan
Prior art keywords
head
read
servo head
write
servo
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
Application number
JP11602384A
Other languages
Japanese (ja)
Inventor
Takahisa Mihara
隆久 三原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP11602384A priority Critical patent/JPS60261012A/en
Publication of JPS60261012A publication Critical patent/JPS60261012A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

PURPOSE:To narrow interval between discs by arranging a servo head and a read/write head in an actuator arm face while shifting the position so as to apply shield to the servo head. CONSTITUTION:A hole 15 except inside exists at the tip of the actuator arm 14 and a servo head 8 and a read/write head 5 are supported to a load arm 10 so as to be arranged eccentrically in the hole 15 and the load arm 10 is screwed to the actuator arm 14 via a fitting stand 11. In this case, the actuator arm 14 to which the fitting stand 11 of the load arm 11 is fitted is subjected to facing 15, the servo head 8 and the read/write head 5 are sunk in the face of the actuator arm 14 so as to lower the height B up to the upper face of the servo head 8 and the read/write head 5. Thus, the interval between the lower/upper discs is narrowed, where the servo head 8 and the read/write head 5 are opposed to each other.

Description

【発明の詳細な説明】 本発明は磁気ディスク装置のアクチェエータアームに、
１個のサーボヘッドと１個以上の読取り／書込みヘッド
（以下リード／ライトヘッドという）ン保持し、該サー
ボヘッドのリード出カンリード／ライトヘッドのライト
ノイズから保護するシールド構造に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an actuator arm for a magnetic disk drive.
The present invention relates to a shield structure that holds one servo head and one or more read/write heads (hereinafter referred to as read/write heads) and protects the read output of the servo head from the write noise of the read/write heads.

〔産業上の利用分野〕[Industrial application field]

上記磁気ディスク装置は情報処理システムにおいて、計
算機等の周辺装置として使用され、それは高速回転して
いるディスク円板に微小間隙ン保って磁気ヘッドヶ保持
し、ディスク円板上の同心円状の多数のトラックに情報
音記録するもので、記録容量ン増すため一般にディスク
円板ン複数枚積層している。The above-mentioned magnetic disk drive is used as a peripheral device for computers and other devices in information processing systems.It holds a magnetic head with a small gap between a disk disk rotating at high speed, and has a large number of concentric tracks on the disk disk. A disk is used to record sound information, and in order to increase the recording capacity, multiple disks are generally stacked on top of each other.

最近、記録密度が高密度化され、トラック間隙も狭くな
り、サーボヘッドにより行われる磁気ヘッドの目標トラ
ックへの位置決めは、環境温度の変化により位置ズレン
起し易くなっている。そのため、サーボヘッドＺ出来る
だけスタックされた円板の中央面に配置するようにして
、温度変化による磁気ヘッドの位置ズレン防ぐことが考
えられているが、その場合はサーボヘッドのリードが磁
気ヘッドのライトノイズから保護する必要がある。Recently, recording densities have become higher and track gaps have become narrower, and positioning of a magnetic head to a target track performed by a servo head is likely to be misaligned due to changes in environmental temperature. Therefore, it has been considered to prevent the position of the magnetic head from shifting due to temperature changes by arranging the servo head Z as close to the center plane of the stacked disks as possible, but in that case, the leads of the servo head Needs protection from light noise.

又、磁気ディスク装置の小型化の要望ン実現するために
、ディスク円板の積層間隔ケ狭くすることが必要である
。Furthermore, in order to realize the desire for miniaturization of magnetic disk drives, it is necessary to narrow the stacked spacing of the disk disks.

の 〔従来技術〕 第２図は磁気ディスク装置の概略Ｚ示しｋもので、ヘッ
ド１上に複数のディスク円板２が回転体３に保持され、
その下部に設けにモータ４により関連に回転されろ。又
ディスク円板２の情報をリード／ライトする磁気ヘッド
（以下リード／ライトヘラ下）５はアクチェエータアー
ム６に取付けられ、アクチュエータフにより駆動される
。このリード／ライトヘッド５斜デイスク円板２の目標
トラックへ位置決めするサーボヘッド８は従来ディスク
円板２の一番下にあって、リード／ライトヘッド５のラ
イトノイズン受けないようにしている。[Prior Art] FIG. 2 shows a schematic Z diagram of a magnetic disk device, in which a plurality of disk disks 2 are held on a head 1 by a rotating body 3,
It is rotated by a motor 4 provided at its lower part. A magnetic head (hereinafter referred to as read/write head) 5 for reading/writing information on the disk disk 2 is attached to an actuator arm 6 and driven by an actuator tough. A servo head 8 for positioning the read/write head 5 to a target track on the oblique disk disk 2 is conventionally located at the bottom of the disk disk 2 so as not to receive write noise from the read/write head 5.

ところか最近高記録密度化によりトラックピッチが非常
に狭くなり、温度変化による各機構部の歪みのため、サ
ーボヘッド８によるり−ド／ライトヘッド５の位置が位
置ズレン起しオフトラックする。その位置ズレンなくす
ｋめに、積層ディスク円＆２の中央辺にサーボヘッド８
乞点線矢印で示すように配置する。このとき、サーボヘ
ッド８がリード／ライトヘッド５に近接するので、り一
ド／ライトヘッド５のライトノイズケ受けないように第
３図Ｋｌ（Ｃ１１に示すようにシールド部材９、例えば
パーマロイ等で覆っている。Recently, however, the track pitch has become very narrow due to the increase in recording density, and due to the distortion of various mechanical parts due to temperature changes, the position of the read/write head 5 caused by the servo head 8 is shifted and off-track. In order to eliminate the positional deviation, the servo head 8 is placed on the center side of the laminated disk circle &2.
Place it as shown by the dotted arrow. At this time, since the servo head 8 is close to the read/write head 5, a shield member 9, such as permalloy, etc., is used as shown in FIG. covered.

第３図（イ）は正面図、第３図仲）は図の右より見た側
面図ン夫々示し、サーボヘッド８とリード／ライトヘッ
ド５が背面合せの形でロードアーム（加圧バネ）１０に
保持されていて、該ロードアーム１０は取付台１１−介
してアクチェエータアーム６にネジ止め１２されている
。アクチュエータ６の先端に延長した板１３にサーボヘ
ッド８を包むようにし、チリトリ状のシールド部材９乞
取付けている。Figure 3 (a) shows a front view, and Figure 3 (middle) shows a side view as seen from the right side of the figure, with the servo head 8 and read/write head 5 placed back to back on the load arm (pressure spring). 10, and the load arm 10 is screwed 12 to the actuator arm 6 via a mounting base 11. A servo head 8 is wrapped around a plate 13 extending to the tip of the actuator 6, and a dustpan-shaped shield member 9 is attached.

アクチェエータアーム６の延長上に上記シールド部材９
を取付けたため、サーボヘッド８とり一ド／ライトヘッ
ド５の必要とする高さＨが大きくなりディスク円板２量
隔Ａが他のディスク円板間隔（約７．５朋）より広＜（
Ａが約１０闘）ならざるン得なかった。The shield member 9 is placed on the extension of the actuator arm 6.
Since the height H required for the servo head 8 and the read/write head 5 is increased, the distance A between the two disks is wider than the other distances (approximately 7.5 mm).
It was inevitable that A would win about 10 games.

〔発明か解決しようとする問題点〕[Problem that the invention attempts to solve]

上記のように、従来のサーボヘッドのシールド構造では
サーボヘッドのあるディスク円板間隔が他のディスク円
板間隔より広くせざるケ得ず、装置の小屋化を阻害する
という問題点かあ−）た。As mentioned above, in the conventional shield structure of the servo head, the distance between the disks where the servo head is located has to be wider than the distances between other disks, which is a problem in that it prevents the equipment from becoming a shed. Ta.

〔問題点ン解決するための手段〕[Means for solving problems]

上記問題点はアクチュエータアーム面内で、サーボヘッ
ドとリード／ライトヘッドの位置をずらして配置し、さ
らに該サーボヘッドと該リード／ライトヘッドの間に、
サーボヘッドの出力乞り一ド／ライトヘッドのライトノ
イズから保護するような磁気的な隔壁ン設ゆにサーボヘ
ッドのシールド構造によって解決される。The above problem is that the servo head and the read/write head are arranged at different positions within the actuator arm plane, and furthermore, between the servo head and the read/write head,
This problem is solved by a shield structure of the servo head in addition to a magnetic partition wall that protects the output of the servo head from the write noise of the read/write head.

〔作用〕[Effect]

本発明ではアクチュエータ面内で、サーボヘッドとリー
ド／ライトヘッドの位置ｗｆらして配置することにより
、温度変化によるリード／ライトヘッドの位置ズレを防
ぐＫめのサーボヘッドとリード／ライトヘッドの近接配
置が行えるとともに、サーボヘッドとリード／ライトヘ
ッドが必要とするディスク円板間隔を狭くすることがで
きる。又サーボヘッドとリード／ライトヘッドの間に磁
気的な隔壁ン設けることによりサーボヘッドのリードが
リード／ライトヘッドのライトノイズから保護できる。In the present invention, by arranging the servo head and the read/write head at the same position wf within the actuator plane, the K-th servo head and the read/write head are placed close to each other to prevent the read/write head from shifting due to temperature changes. In addition, the distance between the disks required by the servo head and the read/write head can be reduced. Further, by providing a magnetic partition between the servo head and the read/write head, the read of the servo head can be protected from the write noise of the read/write head.

〔実施例〕〔Example〕

以下本発明ン図面によって説明する。全図ン通じじ同一
符号は同一対象物を示す。The present invention will be explained below with reference to the drawings. The same symbols throughout the drawings indicate the same objects.

第１図（ａ）は本発明のサーボヘッドのシールド構造の
１実施例〉示す斜視図、第１図ら）は第１図（ａ）のＸ
−Ｘ断面を矢印方向より見た図で、磁気ディスク装置の
直進タイプのアクチェエータアームに適用したものであ
る。FIG. 1(a) is a perspective view showing one embodiment of the shield structure of the servo head of the present invention, and FIG.
This is a view of the -X cross section viewed from the direction of the arrow, and is applied to a linear type actuator arm of a magnetic disk device.

図において、アクチェエータアーム１４の先端に中抜穴
１５があり、該中抜穴１５内で、サーボヘッド８とリー
ド／ライトヘッド５が位ｔｖずらして配置するようにロ
ードアーム１０に保持され、該ロードアームｌＯは取付
台１１を介してアクチェエータアーム１４にネジ止め１
２されている。In the figure, there is a hollow hole 15 at the tip of the actuator arm 14, and within the hollow hole 15, the servo head 8 and the read/write head 5 are held by the load arm 10 so as to be shifted in position. , the load arm lO is screwed 1 to the actuator arm 14 via the mounting base 11.
2 has been done.

このとき、ロードアームｌＯの取付台１１が取付けられ
るアクチュエータアーム１４部分は座グリ１５されてい
て、サーボヘッド８とリード／ライトヘッド５がアクチ
ュエータアーム１４面内に沈むようにし、サーボヘッド
８とリード／ライトヘッド５の夫々上面までの高さＢＹ
低くする。これによりサーボヘッド８とリード／ライト
ヘッド５が対向する上下ディス円板間隔（第３図Ａ参鵬
ン狭くすることができる。従来のサーボヘッドのシール
ド構造ではディスク円板間隔が約１０朋要していたもの
が、本発明では約５ｍｍ位にでき、ディスク円板２の実
装効率が上がり、装置の小型化か可能となる。At this time, the portion of the actuator arm 14 to which the mounting base 11 of the load arm IO is attached is counterbored 15 so that the servo head 8 and the read/write head 5 are sunk within the plane of the actuator arm 14, and the servo head 8 and the lead /Height BY to the top of each light head 5
make low. As a result, the distance between the upper and lower discs (see Fig. 3A) where the servo head 8 and the read/write head 5 face each other can be narrowed.In the conventional servo head shield structure, the distance between the upper and lower disks is approximately 10 mm. However, according to the present invention, the thickness can be reduced to about 5 mm, increasing the mounting efficiency of the disk 2 and making it possible to miniaturize the device.

又、サーボヘッド８の出力ｔリード／ライトヘッド５の
ライトノイズから保護するような磁気的な隔壁１６（パ
ーマロイ等の材料で２形状）ンサーボヘッド８とリード
／ライトヘッド５の間に設り−る。これによりサーボヘ
ッド８が積層ディスク円板２の中央辺に配置することが
可能となり、温度変化による機構部の歪みによりサーボ
ヘッド８によるり−Ｋ　／　”ｐストヘッド５の位置ズ
レも防げる０ 第１図（ｃｌは本発明の別の実施例を示す斜視図で、磁
気ディスク装置の回転タイプのアクチュエータアームに
適用しｋものである。Further, a magnetic partition wall 16 (made of permalloy or the like in two shapes) is provided between the servo head 8 and the read/write head 5 to protect the output from the servo head 8 from the write noise of the read/write head 5. -ru. This makes it possible to arrange the servo head 8 at the center of the laminated disk disk 2, and prevents the servo head 8 from shifting its position due to distortion of the mechanism due to temperature changes. Figure (cl) is a perspective view showing another embodiment of the present invention, which is applied to a rotary type actuator arm of a magnetic disk drive.

図において、１７はアクチュエータアーム、１８はシー
ルド板、他は第１図と共通であるので、同　−符号乞用
いる。アクチュエータアーム１７は矢印方向に揺動し、
作用、効果は全く直進タイプのアクチュエータアームと
全く同じであるので、説明以上説明したように本発明は
アクチェエータアーム面内で、サーボヘッドとリード／
ライトヘッドの位置ンずらして配置し、サーボヘッドヶ
シールドすることによりディスク円板間隔が狭くなり実
装効率が上がり、装置の小型化が可能となる著しい効果
を備えている。In the figure, 17 is an actuator arm, 18 is a shield plate, and other parts are the same as in FIG. 1, so the same symbols are used. The actuator arm 17 swings in the direction of the arrow,
The action and effect are exactly the same as that of a straight-moving type actuator arm, so as explained above, the present invention can connect the servo head and lead/lead within the actuator arm plane.
By shifting the positions of the write heads and shielding the servo heads, the disk spacing becomes narrower, mounting efficiency increases, and the device has the remarkable effect of making it possible to downsize the device.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図ｆａｔは本発明のサーボヘッドのシールド構造の
１実施例Ｚ示す斜視図、 第１財１＋１）ｌは第１図ｆａｔのＸ−Ｘ断面図を矢印
方向より見た図、 第１図ｆｃ）は本発明の別の実施例を示す斜視図、第２
図は磁気ディスク装置の概略ン説明する図、第３図は従
来のサーボヘットのシールド構造ン説明する図である。 図において、 ５はリード／ライトヘッド、８はサーボヘッド、１０は
ロードアーム、１１は１役付台、１２はネジ止め、１４
．１７はアクチュエータアーム、１５は座ぐり、１６は
磁気的な隔壁、１８はシールド版ン示−１−６ ｖ−１叫 （０） ５　／／ ￥−Ｉ閣 （Ｃ） 峯２１１Ｑ ￥−３阿 （イ）Figure 1 fat is a perspective view showing one embodiment Z of the shield structure of the servo head of the present invention, Figure 1 1+1)l is a cross-sectional view of Figure 1 fat viewed from the arrow direction, Figure 1 fc) is a perspective view showing another embodiment of the present invention, No. 2
The figure is a diagram for explaining the outline of a magnetic disk device, and FIG. 3 is a diagram for explaining the shielding structure of a conventional servo head. In the figure, 5 is a read/write head, 8 is a servo head, 10 is a load arm, 11 is a 1-function stand, 12 is a screw, 14
．． 17 is the actuator arm, 15 is the counterbore, 16 is the magnetic bulkhead, 18 is the shield plate. (stomach)

Claims (1)

【特許請求の範囲】[Claims] １個のサーボヘッドと１個以上の読取り／書込みヘッド
ケ保持する磁気ディスク装置のアクチュエータアームの
サーボヘッドのシールド構造において、前記アクチェエ
ータアーム面内で前記サーボヘッドとリード／ライトヘ
ッドの位置ンずらして配置し、さらに、該サーボヘッド
と該読取り／代地みヘッドの間に、サーボヘッドの出力
を読取り／書込みヘッドの書込みノイズから保護するよ
うな磁気的な隔壁ン設けたことＺ特徴とするサーボヘッ
ドのシールド構造。In a servo head shield structure of an actuator arm of a magnetic disk device holding one servo head and one or more read/write heads, the positions of the servo head and the read/write head are shifted within the plane of the actuator arm. further characterized in that a magnetic barrier is provided between the servo head and the read/transfer head to protect the output of the servo head from write noise of the read/write head. Servo head shield structure.
JP11602384A 1984-06-06 1984-06-06 Shield structure of servo head Pending JPS60261012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11602384A JPS60261012A (en) 1984-06-06 1984-06-06 Shield structure of servo head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11602384A JPS60261012A (en) 1984-06-06 1984-06-06 Shield structure of servo head

Publications (1)

Publication Number Publication Date
JPS60261012A true JPS60261012A (en) 1985-12-24

Family

ID=14676863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11602384A Pending JPS60261012A (en) 1984-06-06 1984-06-06 Shield structure of servo head

Country Status (1)

Country Link
JP (1) JPS60261012A (en)

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