JPS62192078A - Rocking arm positioning mechanism for magnetic disk device - Google Patents
Rocking arm positioning mechanism for magnetic disk deviceInfo
- Publication number
- JPS62192078A JPS62192078A JP3321286A JP3321286A JPS62192078A JP S62192078 A JPS62192078 A JP S62192078A JP 3321286 A JP3321286 A JP 3321286A JP 3321286 A JP3321286 A JP 3321286A JP S62192078 A JPS62192078 A JP S62192078A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic disk
- coil
- magnetic field
- positioning mechanism
- 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
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 239000011435 rock Substances 0.000 abstract 1
- 238000003384 imaging method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Landscapes
- Moving Of Heads (AREA)
Abstract
Description
【発明の詳細な説明】
し産業上の利用分野］
本発明は、磁気ディスク装置の揺動アーム位置決め間溝
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application] The present invention relates to a groove for positioning a swing arm of a magnetic disk device.
［従来の技術〕
一般に可動ヘッド形磁気ディスク装置においては、磁気
ディスク上の特定の情報の呼び出しの要求があり次第、
呼び出し時間を最小にするように、可働ヘッドを磁気デ
ィスクの半径方向に急速に（ｑ置決めしなければならな
い。[Prior Art] In general, in a movable head type magnetic disk device, as soon as there is a request to retrieve specific information on the magnetic disk,
The movable head must be positioned rapidly (q) in the radial direction of the magnetic disk to minimize readout time.
従来、この可動ヘッドの位置決めは、第２図に示すよう
な位置決め機構により行われていた。Conventionally, the positioning of this movable head has been performed by a positioning mechanism as shown in FIG.
同図において、複数の磁気ヘッド１，１・・・はアーム
２，２・・・に取付けられ、これらアーム２．２・・・
がハウジング３に支持され、さらに軸受け４を介して中
心軸５の回りを揺動するようになっている。アーム２，
２・・・には磁気回路６中にＬ装置されたコイル７が一
体化されている。中心軸５及び磁気回路６は上部基板８
ａおよび下部基板８ｂにより支持されている。In the figure, a plurality of magnetic heads 1, 1... are attached to arms 2, 2..., and these arms 2, 2...
is supported by a housing 3, and further swings around a central axis 5 via a bearing 4. Arm 2,
2... have an L-shaped coil 7 integrated into the magnetic circuit 6. The central axis 5 and the magnetic circuit 6 are connected to the upper substrate 8
a and the lower substrate 8b.
すなわら、上記構成の位置決め１！１構にあってはコイ
ル７に電流を流すと、磁気回路６に設けられている永久
磁石の磁界により磁気回路６とコイル７の間に反発力が
生じ、この反発力によりハウジング３に取り付けられて
いるアーム２が軸受４を介して中心軸５の回りを揺動じ
、これにより磁気ヘッド１が磁気ディスク（図示せず）
の所定位置に位置決めされる。ここで、磁気ヘッド１の
位置決めは、磁気ヘッド１の位置が検出され、その後ボ
イスコイルモータ制御回路によりボイスコイルモータ用
のコイル７が通電され、その結果上述のようにコイル７
が移動して、磁気ヘッド１が移動し、以下同様に磁気ヘ
ッド１の位置検出・・・というような閉ループを形成す
るサーボ回路系によって制御される。In other words, in the positioning 1!1 structure having the above configuration, when a current is applied to the coil 7, a repulsive force is generated between the magnetic circuit 6 and the coil 7 due to the magnetic field of the permanent magnet provided in the magnetic circuit 6. This repulsive force causes the arm 2 attached to the housing 3 to swing around the central axis 5 via the bearing 4, thereby causing the magnetic head 1 to move toward the magnetic disk (not shown).
is positioned at a predetermined position. Here, in positioning the magnetic head 1, the position of the magnetic head 1 is detected, and then the voice coil motor control circuit energizes the coil 7 for the voice coil motor, and as a result, as described above, the coil 7
moves, the magnetic head 1 moves, and then the position of the magnetic head 1 is detected in the same manner, etc., and so on, and so on.
し解決すべき問題点コ
従来の磁気ディスク装置の揺動アーム位置決め（よ＠に
あっては、磁気ヘッド１が呼び出し等の命令により急速
な動作をすると、上述のようなサーボループにおいて、
機械的共振が問題となり、その共振周波数が低すぎたり
、その撮動レベルが高ｔざると、サーボ系が共撮し１．
正確な位置決めが不可能となるという問題があった。Problems to be solved: When the magnetic head 1 moves rapidly due to a command such as a call, the swing arm positioning of a conventional magnetic disk device is difficult.
Mechanical resonance becomes a problem, and if the resonance frequency is too low or the imaging level is too high, the servo system will cause joint imaging.1.
There was a problem that accurate positioning was impossible.
磁気ディスクの記録密度が小さい場合には、情報の呼び
出し、書込みに十分な余裕があったが、近年の記憶密度
、容徂の増大に伴い、情報の呼び出し、書き込み時の余
裕がなくなると、サーボループの共振周波数を上げるか
、その撮動レベルを下げる必要がある。When the recording density of magnetic disks was low, there was sufficient margin for reading and writing information.However, as storage density and capacity have increased in recent years, there is no longer any margin for reading and writing information, and the servo It is necessary to increase the resonant frequency of the loop or lower its imaging level.
したがって、本発明においては、サーボループの共振周
波数が上がり、その撮動レベルを下げることができサー
ボ系の制御を容易にし、磁気ヘッドの確実かつ安定した
位置決めを行な゛うことができる磁気ディスク装置の揺
動アーム位置決め機Ｈｉを提供することを技術的課題と
する。Therefore, in the present invention, the resonant frequency of the servo loop is increased, the imaging level of the magnetic disk can be lowered, the servo system can be easily controlled, and the magnetic head can be positioned reliably and stably. The technical problem is to provide a swing arm positioning machine Hi for the device.
Ｅ問題点の解決手段］
上記従来の問題点を解決する本発明の磁気ディスク装置
の揺動アーム位置決め機構は、複数の磁気ヘッドを実装
した揺動アーム群と、これら揺動アーム群を支持するハ
ウジングと、前記ハウジングを回転させる軸受けと、前
記軸受けを支持する中心軸と、前記アーム群と一体化さ
れたコイルと前記コイルに生ずる磁界と反発作用をなす
磁界を生ずる磁気回路と、それぞれ前記中心軸及び前記
磁気回路を支持する上部基板および下部基板と、前記上
部基板と前記下部基板とを連結する少なくとも１本の支
柱とを備えることを要旨とする。Solution to Problem E] A swinging arm positioning mechanism for a magnetic disk drive according to the present invention that solves the above-mentioned conventional problems includes a swinging arm group on which a plurality of magnetic heads are mounted, and a swinging arm group that supports these swinging arm groups. a housing, a bearing that rotates the housing, a central axis that supports the bearing, a coil integrated with the arm group, a magnetic circuit that generates a magnetic field that repels the magnetic field generated in the coil, and the center of each of the housings; The gist is to include an upper substrate and a lower substrate that support the shaft and the magnetic circuit, and at least one support column that connects the upper substrate and the lower substrate.
［実施例コ
以下、図面を参照して本発明の一実施例について第１図
を参照して説明する。同図において複数の磁気ヘッド１
，１・・・はアーム２，２・・・に取付けられ、これら
アーム２，２・・・がハウジング３に支持され、さらに
軸受け４を介して中心軸５の回りを揺動するようになっ
ている。アーム２．２・・・には磁気回路６中に設置さ
れたコイル７が一体化されている。中心軸５及び磁気回
路６は上部基板８ａおよび下部基板８ｂにより支持され
ている。[Example 1] Hereinafter, an example of the present invention will be described with reference to FIG. 1 with reference to the drawings. In the figure, a plurality of magnetic heads 1
, 1 . . . are attached to arms 2, 2 . ing. A coil 7 installed in a magnetic circuit 6 is integrated into the arms 2.2. The central axis 5 and the magnetic circuit 6 are supported by an upper substrate 8a and a lower substrate 8b.
上部基板８ａと下部基板８ｂとは少なくとも１本の支柱
９により連結されている。The upper substrate 8a and the lower substrate 8b are connected by at least one support 9.
上記位置決め機Ｗａにおいては、磁気回路６に設けられ
ている永久磁石の磁界とコイルに電流を流すことによっ
て生ずる磁界との反発作用によって、軸受け４を介して
ハウジング３に取り付けられているアーム２が中心軸４
の回りを揺動する。この際、上部基板８ａおよび下部基
板８ｂが４辰動を起こす。しかして、上部基板８ａと下
部基板８ｂとは支柱って連結されているので、共振周波
数が上がり、かつその撮動レベルが下がる良好な１辰動
持性を得ることができる。In the positioning machine Wa, the arm 2 attached to the housing 3 via the bearing 4 is moved by the repulsion between the magnetic field of the permanent magnet provided in the magnetic circuit 6 and the magnetic field generated by passing current through the coil. central axis 4
swing around. At this time, the upper substrate 8a and the lower substrate 8b undergo a four-axis movement. Since the upper substrate 8a and the lower substrate 8b are connected by a support, it is possible to obtain good one-stroke stability that increases the resonance frequency and lowers the imaging level.
［発明の効果］
以上説明したように本発明は、上部基板と下部基板とを
支柱で連結することにより、共振周波数が上がり、かつ
その振動レベルが下がる良好な振動特性が得られるため
、書込み及び読込みの動作時に誤動作を起こすことが少
なく、したがって信頼性を高めることができるという効
果がある。[Effects of the Invention] As explained above, in the present invention, by connecting the upper substrate and the lower substrate with a support, good vibration characteristics are obtained in which the resonant frequency is increased and the vibration level is decreased. This has the effect that malfunctions are less likely to occur during reading operations, and therefore reliability can be improved.
【図面の簡単な説明】
第１図は本発明に係る磁気ディスク装置の揺動アーム位
置決め機構の一実施例を示す断面図、第２図は従来の同
機構の縦断面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing an embodiment of a swing arm positioning mechanism for a magnetic disk drive according to the present invention, and FIG. 2 is a longitudinal sectional view of the conventional mechanism.
Claims (1)
動アーム群を支持するハウジングと、前記ハウジングを
回転させる軸受けと、前記軸受けを支持する中心軸と、
前記アーム群と一体化されたコイルと、前記コイルに生
ずる磁界と反発作用をなす磁界を生ずる磁気回路と、そ
れぞれ前記中心軸及び前記磁気回路を支持する上部基板
および下部基板と、前記上部基板と前記下部基板とを連
結する少なくとも１本の支柱とを備えることを特徴とす
る磁気ディスク装置の揺動アーム位置決め機構。A group of swing arms mounted with a plurality of magnetic heads, a housing that supports the group of swing arms, a bearing that rotates the housing, and a central shaft that supports the bearing.
A coil integrated with the arm group, a magnetic circuit that generates a magnetic field that acts repulsively with the magnetic field generated in the coil, an upper substrate and a lower substrate that respectively support the central axis and the magnetic circuit, and the upper substrate. A swing arm positioning mechanism for a magnetic disk drive, comprising at least one support column that connects the lower substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3321286A JPS62192078A (en) | 1986-02-18 | 1986-02-18 | Rocking arm positioning mechanism for magnetic disk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3321286A JPS62192078A (en) | 1986-02-18 | 1986-02-18 | Rocking arm positioning mechanism for magnetic disk device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62192078A true JPS62192078A (en) | 1987-08-22 |
Family
ID=12380139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3321286A Pending JPS62192078A (en) | 1986-02-18 | 1986-02-18 | Rocking arm positioning mechanism for magnetic disk device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62192078A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01277374A (en) * | 1988-04-28 | 1989-11-07 | Nec Corp | Positioning carriage for magnetic disk device |
-
1986
- 1986-02-18 JP JP3321286A patent/JPS62192078A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01277374A (en) * | 1988-04-28 | 1989-11-07 | Nec Corp | Positioning carriage for magnetic disk device |
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