JPH0411364A - Magnetic disk device - Google Patents
Magnetic disk deviceInfo
- Publication number
- JPH0411364A JPH0411364A JP11225190A JP11225190A JPH0411364A JP H0411364 A JPH0411364 A JP H0411364A JP 11225190 A JP11225190 A JP 11225190A JP 11225190 A JP11225190 A JP 11225190A JP H0411364 A JPH0411364 A JP H0411364A
- Authority
- JP
- Japan
- Prior art keywords
- arm
- magnetic disk
- magnetic head
- plate
- magnetic
- 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
- 125000006850 spacer group Chemical group 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 241000270666 Testudines Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Supporting Of Heads In Record-Carrier Devices (AREA)
- Moving Of Heads (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、固定磁気ディスク装置に用いるアクチュエ
ータアームの構成に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of an actuator arm used in a fixed magnetic disk drive.
第8図は例えば特開昭60−79574号公報に示され
た従来の磁気ディスク装置を示す部分斜視図であり、図
において、1は磁気へンド位置決め機構で上支持板2と
下支持板3とによって、いわゆるハウジングが構成され
、この上支持板2と下支持板3の間には、軸受(図示せ
ず)を介して回転軸4が挿入され、この回転軸4にはこ
の回転軸4と一体になって回動する支持アーム5が固定
されており・支持アーム5の後方には駆動コイル6が取
付けられている。そして、この駆動コイル6を上下から
囲むように非接触の状態で磁気回路7が上述の上支持板
2と下支持板3の間に設けられている。FIG. 8 is a partial perspective view showing a conventional magnetic disk device disclosed in, for example, Japanese Unexamined Patent Publication No. 60-79574. A so-called housing is constructed by these, and a rotating shaft 4 is inserted between the upper support plate 2 and the lower support plate 3 via a bearing (not shown). A support arm 5 that rotates in unison with the support arm 5 is fixed thereto, and a drive coil 6 is attached to the rear of the support arm 5. A magnetic circuit 7 is provided between the above-mentioned upper support plate 2 and lower support plate 3 in a non-contact manner so as to surround the drive coil 6 from above and below.
また、支持アーム5の受は部−にはW数のアーム8が積
層して塔載され・これらアーム8はボルト9によって受
は部−に圧着固定され、さらに位置決めビン10が積層
状のアーム8と受けs5aに打込まれている。そして、
各アーム5の先端には、磁気へンドUが固定されている
。In addition, the support arm 5 has a number of arms 8 stacked on the support arm 5. These arms 8 are crimped and fixed to the support arm 8 with bolts 9, and a positioning pin 10 is mounted on the stacked arm. 8 and is driven into receiver s5a. and,
A magnetic hand U is fixed to the tip of each arm 5.
次に動作について説明する。各磁気ヘッドHには磁気デ
ィスク(図示せず)が対面しており、磁気ディスクに記
録された位置決め情報が磁気ヘッドHによって再生され
、この再生信号に応じて駆動コイル6に位置決め用電流
が流入する。これによって、回転軸4を中心にして支持
アーム5、アーム8が回動して磁気ヘンド■が砒気ディ
スク上の所定のトランクに位置決めされる。以上の動作
によって、固定ディスク装置では、磁気ヘッド■と磁気
ディスク間で計算機信号の再生や記録が実行される。常
温では、これらの動作に問題がないが、支持アーム5、
アーム8、ボルト9の各材料で線膨張係数に差があるた
め、低温や高温の繰り返し負荷が加わると、各アーム間
の積層面で面ずれが生じ、磁気ヘッド11相互間でも位
置ずれが生じる。このため、磁気ディスクに記録された
信号が正しく再生できないという問題が生じる。これに
対し、例えば位置決めビンioを打込んで位置ずれの防
止対策を講じる。しかしながら、後記する如く、位置決
めビンlOによる対策では上記の面ずれの防止が不可能
である。Next, the operation will be explained. A magnetic disk (not shown) faces each magnetic head H, positioning information recorded on the magnetic disk is reproduced by the magnetic head H, and a positioning current flows into the drive coil 6 in accordance with this reproduced signal. do. As a result, the support arm 5 and the arm 8 rotate about the rotating shaft 4, and the magnetic hand (2) is positioned at a predetermined trunk on the arsenic disk. Through the above operations, in the fixed disk device, computer signals are reproduced and recorded between the magnetic head (2) and the magnetic disk. There is no problem with these operations at room temperature, but the support arm 5,
Since the materials of the arms 8 and bolts 9 have different coefficients of linear expansion, repeated loads at low or high temperatures will cause surface misalignment in the laminated surfaces between the arms, and misalignment between the magnetic heads 11 as well. . Therefore, a problem arises in that signals recorded on the magnetic disk cannot be correctly reproduced. To deal with this, measures are taken to prevent positional deviation, for example by driving a positioning pin io. However, as will be described later, it is impossible to prevent the above-mentioned surface deviation by using the positioning bin 1O.
従来の磁気ディスク装置は以上のように構成されている
が、温度変化に対する部材間の伸縮によって、とくにボ
ルト9とアーム8間では高温条件下で、ボヌト9がステ
ンレス(il膨張係数: 16XlO−’)・アーム8
がアルミニウム(線膨張係数: 213X10−”)と
すると、ボルト9の締め付は状態がゆるむ傾向となり、
逆に低温条件下でボルト9は締め付けられる傾向となる
。このため、積層面では・回転軸を中心とした面ずれが
発生し、低高温の繰り返しが負荷されると、このずれは
徐々に増加する。アーム8間で相対的な位置ずれが生じ
ると、ディスク上のトランクに対する磁気ヘッドHの位
置がずれて、磁気ディスク装置の機能である信号の記録
・再生が正確に行なわれないという間黴が生じる。The conventional magnetic disk drive is constructed as described above, but due to the expansion and contraction between the members due to temperature changes, especially between the bolt 9 and the arm 8 under high temperature conditions, the bolt 9 is made of stainless steel (il expansion coefficient: 16XlO-' )・Arm 8
If it is aluminum (linear expansion coefficient: 213X10-"), the bolt 9 tends to loosen,
Conversely, the bolts 9 tend to be tightened under low temperature conditions. For this reason, plane misalignment occurs on the laminated surfaces around the axis of rotation, and when repeated low and high temperatures are applied, this misalignment gradually increases. If a relative positional shift occurs between the arms 8, the position of the magnetic head H relative to the trunk on the disk will shift, resulting in mold that prevents accurate signal recording and reproduction, which is a function of the magnetic disk device. .
この発明は上記のような問題点を解消するためになされ
たもので、アームが積層構造であるにも拘わらず磁気ヘ
ッドは高精度に位置決めされ、磁気ディスクの記録情報
が正確に再生できる磁気ディスク装置を得ることを目的
とする。This invention was made to solve the above-mentioned problems.Despite the arm having a laminated structure, the magnetic head is positioned with high precision, and information recorded on the magnetic disk can be accurately reproduced. The purpose is to obtain equipment.
この発明に係る磁気ディスク装置は、アームの積層面を
磁気ディスクの面と磁気へンドのシーク方向に直交さf
たものである。In the magnetic disk device according to the present invention, the laminated surface of the arm is perpendicular to the surface of the magnetic disk and the seek direction of the magnetic head.
It is something that
この発明における磁気ディスク装置では、アームの積層
面で多少の面ずれが生じても、磁気ヘッド間の相対位置
に差が生じず、磁気ディスクに対し計算機情報が正確に
記録・再生できる。In the magnetic disk device according to the present invention, even if some misalignment occurs in the laminated surfaces of the arms, no difference occurs in the relative positions between the magnetic heads, and computer information can be accurately recorded and reproduced on the magnetic disk.
以下、この発明の一実施例を図について説明する。なお
、図では従来の構造と異なる支持アームを中心に説明す
ることとする。第1図〜第8図は本発明による一実施例
であり、団は従来装置の支持アーム5と全く同一の役目
をなす支持アーム、51a&′Lこの支持アーム51と
一体になり支持アーム&の光漏部分に設けられたアーム
当接部、81a〜8]fはこのアーム当接部ムに積層固
定されている板状アーム、化はこの板状アーム81a〜
81fをアーム当接部鑞に固定するためのビスねじでア
ーム当接部51aにはビスねじν用のねじ穴が設けられ
ている。An embodiment of the present invention will be described below with reference to the drawings. In addition, in the drawings, the explanation will focus on the support arm, which is different from the conventional structure. FIGS. 1 to 8 show an embodiment of the present invention, in which a support arm 51a&'L is integrated with the support arm 51 and has the same role as the support arm 5 of the conventional device. The arm abutting portions 81a to 8]f provided in the light leakage portion are plate-like arms laminated and fixed to the arm abutment portions;
A screw hole for a screw ν is provided in the arm contact portion 51a for fixing the arm contact portion 81f to the arm contact portion solder.
上記のように構成された本発明による磁気ディスク装置
で、磁気ディスクに対する信号の記録、再生の基本的な
動作は従来Ilf造の装置と全く同一である。In the magnetic disk device according to the present invention configured as described above, the basic operation of recording and reproducing signals on the magnetic disk is exactly the same as that of the conventional Ilf device.
しかしながら以下に示す如く装置の使用鷹境、温度変化
に対Tる磁気ヘッドUの位置ずれには大きな差がある。However, as will be described below, there are large differences in the positional deviation of the magnetic head U with respect to temperature changes and usage conditions of the apparatus.
すなわち、従来構造の装置では先述の如く、積層された
アーム8ではボルト9を中心として積層面でずれが生じ
、信号の記録、再生が正確に実施できなかった。これに
対し、本発明による磁気ディスク装置では、積層面を磁
気ディスクの面に直交させているため、例えビスねじν
部分を中心として板状アーム81a〜81fに面ずれが
生じても、磁気へンドUの位置では磁気ディスクの面の
垂直方向に面ずれするのみであり、磁気ディスク上のト
ランクに対する位置ずれはほとんどない。このため、磁
気ヘッドHによる信号の記録、再生が正確に行われるこ
ととなる。That is, in the device having the conventional structure, as described above, in the stacked arms 8, the stacked surfaces of the arms 8 are misaligned around the bolts 9, making it impossible to record and reproduce signals accurately. On the other hand, in the magnetic disk device according to the present invention, since the laminated surface is perpendicular to the surface of the magnetic disk, even if the screw screw ν
Even if a plane misalignment occurs in the plate-like arms 81a to 81f centering on the magnetic head U, the plane misalignment will only occur in the direction perpendicular to the surface of the magnetic disk at the position of the magnetic head U, and there will be almost no misalignment with respect to the trunk on the magnetic disk. do not have. Therefore, recording and reproduction of signals by the magnetic head H can be performed accurately.
なお、副次的な効果として、板状アーム81間のすきま
が大きいため、回転軸4回りの負荷が減少してアクチュ
エータの動作が高速化される。Incidentally, as a secondary effect, since the gap between the plate-like arms 81 is large, the load around the rotating shaft 4 is reduced and the operation of the actuator is increased.
次に、この発明の他の実施例について説明する。Next, other embodiments of the invention will be described.
第4図の構造では、各板状アーム81間にスペーサ化を
設け、さらに・このスペーサ化を貫通するように垂直ビ
ス14を通し、アーム当接s51!Lにねじ穴を設けて
いる。各板状アーム81の平行性を保つため、スペーサ
化の接触両面は高精度に加工されており、組立て手順は
、初めに垂直ねじ14N−締め付け、次にビスねじνを
締め付けることとする。このように構成された装置では
、各板状アーム81間の平行性が保たれるばかりではな
く、板状アーム81の属性が上昇し、装置の耐衝撃性が
高まる。In the structure shown in FIG. 4, a spacer is provided between each plate-like arm 81, and a vertical screw 14 is passed through the spacer so that the arm abuts s51! A screw hole is provided at L. In order to maintain the parallelism of each plate-shaped arm 81, the contact surfaces of the spacer are machined with high precision, and the assembly procedure is to first tighten the vertical screw 14N and then tighten the screw ν. In the device configured in this manner, not only the parallelism between the plate arms 81 is maintained, but also the attributes of the plate arms 81 are improved, and the impact resistance of the device is increased.
次に、さらに他の実施例を第6図によって説明する。先
の実施例では、ビスねじνを最下端のみに設けることと
したが、アーム当接部5臘を最下端と中間部に設け、こ
れに対応するようにビスねじνを二段に設けて板状アー
ム81を積層してもよい。Next, still another embodiment will be described with reference to FIG. In the previous example, the screw screw ν was provided only at the bottom end, but five arm contact parts were provided at the bottom end and the middle part, and the screw screw ν was provided in two stages to correspond to this. The plate-like arms 81 may be stacked.
これによれば、第1図〜第8図の構成による装置よりも
組立剛性が高まり、先述と同様に装置の耐衝撃性が高ま
る。なお、いうまでもなく、アーム当接551mの数を
更に増しても同様の効果がある。According to this, the assembly rigidity is higher than that of the device having the structure shown in FIGS. 1 to 8, and the impact resistance of the device is increased as described above. Needless to say, the same effect can be obtained even if the number of arm contacts 551m is further increased.
ただし、必要以上に増すと、(ロ)転軸4回りの負荷が
増加してアクチュエータの高速性が損なわれるため注意
を要する。However, if it increases more than necessary, (b) the load around the rotating shaft 4 will increase and the high-speed performance of the actuator will be impaired, so care must be taken.
次に、さらにこのほかの実施例を第6図&:、よって説
明する。同図のWt成では支持アーム51の延長S分に
アーム当接s51&を設けている。この場合は構造が開
−になりコストを下げることができる。Next, further embodiments will be described with reference to FIG. 6 &:. In the Wt configuration shown in the figure, an arm abutment s51& is provided at the extension S of the support arm 51. In this case, the structure becomes open and costs can be reduced.
次には・またさらに他の実施例を第7図によって説明す
る。同図では、アーム当接551aを中央に設け、この
アーム当接s51&と板状アーム8諺にビスねじν用の
ねじ穴を設け、スイング用の積層用アームを構成してい
る。これによれば、下亀にアーム当接551mが突出し
ていないため、回動部の上下寸法が縮小でき、アーム当
接部51aを中心にして上下が対称に近付く。なお、ア
ーム当接部抛を板状アーム81hJ31c間と81υ1
e間に2個設け、各々の部分をビスねじνによって締め
付けることにするとより一層上下が対称になる。Next, still another embodiment will be described with reference to FIG. In the figure, an arm abutment 551a is provided at the center, and a screw hole for a screw ν is provided in the arm abutment s51& and the plate-like arm 8 to form a laminated arm for swinging. According to this, since the arm abutting portion 551m does not protrude from the lower turtle, the vertical dimension of the rotating portion can be reduced, and the vertical dimension becomes nearly symmetrical about the arm abutting portion 51a. In addition, the arm abutting part is connected between the plate-like arm 81hJ31c and 81υ1.
If two parts are provided between e and each part is tightened with screws ν, the upper and lower parts will be more symmetrical.
なお、上下が対称になると、アームのシーク時各磁気ヘ
ッドの位置決めに時間差がなくなり、対象とする信号の
記録や再生が正確に実行される。Note that when the top and bottom are symmetrical, there is no time difference in the positioning of each magnetic head when the arm seeks, and the target signal can be recorded and reproduced accurately.
以上、各々の構造の説明では、板状アーム81の製造方
法をとくに明記しなかったが、大きな板材からの打抜き
と曲げ加工によって板状アームを得てもよいし、ダイキ
ャスト法によって板状アームを得ることもできる。In the above description of each structure, the manufacturing method of the plate-shaped arm 81 was not specified in particular, but the plate-shaped arm may be obtained by punching and bending from a large plate material, or the plate-shaped arm may be obtained by die-casting. You can also get
以上のようにこの発明によれば、アームを板状にして積
層面を磁気ディスクと直交する面に設けたので、面ずれ
が防止でき、磁気ヘッドによる信号の記録と再生が正確
に行える効果がある。As described above, according to the present invention, since the arm is made into a plate shape and the laminated surface is provided on a surface perpendicular to the magnetic disk, surface misalignment can be prevented and signals can be accurately recorded and reproduced by the magnetic head. be.
第1図はこの発明の一実施例による磁気ディスク装置の
部分斜視図、第2図は円板側から見た磁気ディスク装置
の部分正面図、第8図は第2図の側rBJ図、第4図は
この発明の他の実施例を示す部分正面図、第6図はさら
に他の実施例を示Ti分斜視図、第6図はさらに他の実
施例を示す部分正面図、第7図はさらに他の実施例を示
Ts分斜視図、第8図は従来の磁気ディスク装置の位置
決め機構を示す斜視図である。
図中、■は磁気ヘッド、枝はビスねじ、肋はスペーサ、
14は垂直ねし、51は支持アーム、51&はアーム当
接部、81,81JL〜81fは板状アームである。
なお図中同一符号は同一または相当部分を示す。FIG. 1 is a partial perspective view of a magnetic disk device according to an embodiment of the present invention, FIG. 2 is a partial front view of the magnetic disk device seen from the disk side, and FIG. 8 is a side rBJ view of FIG. 4 is a partial front view showing another embodiment of the invention, FIG. 6 is a perspective view showing still another embodiment, FIG. 6 is a partial front view showing still another embodiment, and FIG. 7 is a partial front view showing still another embodiment. 8 is a perspective view showing still another embodiment, and FIG. 8 is a perspective view showing a positioning mechanism of a conventional magnetic disk device. In the figure, ■ is a magnetic head, branches are screws, ribs are spacers,
14 is a vertical thread, 51 is a support arm, 51& is an arm abutting portion, and 81, 81JL to 81f are plate arms. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
装置において、板状のアームに屈曲部を設け、磁気ヘッ
ドを取付けるアームの面を磁気ディスクと平行にし、上
記板状アームの積層面は磁気ディスクと直交するように
構成したことを特徴とする磁気ディスク装置。In a magnetic disk drive in which a positioning mechanism is constructed by stacking arms, a bent part is provided in the plate-shaped arm so that the surface of the arm on which the magnetic head is attached is parallel to the magnetic disk, and the stacked surface of the plate-shaped arm is parallel to the magnetic disk. A magnetic disk device characterized in that the configuration is orthogonal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11225190A JPH0411364A (en) | 1990-04-27 | 1990-04-27 | Magnetic disk device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11225190A JPH0411364A (en) | 1990-04-27 | 1990-04-27 | Magnetic disk device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0411364A true JPH0411364A (en) | 1992-01-16 |
Family
ID=14582029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11225190A Pending JPH0411364A (en) | 1990-04-27 | 1990-04-27 | Magnetic disk device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0411364A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5347346A (en) * | 1989-12-25 | 1994-09-13 | Minolta Camera Kabushiki Kaisha | Image forming apparatus with improved efficiency of maintenance control |
-
1990
- 1990-04-27 JP JP11225190A patent/JPH0411364A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5347346A (en) * | 1989-12-25 | 1994-09-13 | Minolta Camera Kabushiki Kaisha | Image forming apparatus with improved efficiency of maintenance control |
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