JP3726822B2 - Spindle structure of magnetic disk drive - Google Patents
Spindle structure of magnetic disk drive Download PDFInfo
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- JP3726822B2 JP3726822B2 JP2003145560A JP2003145560A JP3726822B2 JP 3726822 B2 JP3726822 B2 JP 3726822B2 JP 2003145560 A JP2003145560 A JP 2003145560A JP 2003145560 A JP2003145560 A JP 2003145560A JP 3726822 B2 JP3726822 B2 JP 3726822B2
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- magnetic disk
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Description
【０００１】
【産業上の利用分野】
本発明は、各種コンピュータの外部記憶装置に広く使用される磁気ディスク装置のスピンドル構造に関する。
【０００２】
最近、磁気ディスク装置は記憶密度の向上が著しく１０年で１０倍以上の割合で進歩し、この高記録密度化を背景として装置の小型化の進展も著しくなっており、それに伴ってディスクサイズは最近では、５インチから３．５インチ，さらに２．５インチディスクと小型化が進んでいる。
【０００３】
このような小型化の過程にあって、さらに強く要求されるのは薄型化であり、特に薄型化でネックになるのは回転精度が重要なスピンドル機構であるため、この回転精度が確保できるとともに容易に薄型化をはかることができる磁気ディスク装置のスピンドル構造が必要とされている。
【０００４】
【従来の技術】
従来広く使用されている磁気ディスク装置のスピンドル構造は、図３に示すようにカバー２を冠着すると磁気ディスク装置の内部が密閉できる大きさで中央部に２個の玉軸受４を挿入する円筒状のハウジング部1aを突設したベース１に、高速回転を軸支する２個の玉軸受４を前記ハウジング部1aの内部に一定の間隔で挿入して外輪を固定し、当該ハウジング部1aの外周面に後述するスピンドルハブ６を回転駆動する円筒状のステータコイル9-2 を固着したベース部が構築されている。
【０００５】
また、外周面に磁気ディスク３を嵌入して中心位置を位置決めするとともに内径にロータマグネット9-1 を固着する軽金属よりなる円筒に、当該磁気ディスク３を挟持する段付け部を一端側外周面に設けて他端面側の内径を閉鎖して中央に貫通孔を穿設したスピンドルハブ６に、前記玉軸受４の内輪と静合する外径で前記ハウジング部1aの高さに対して若干長い剛性を有する回転軸５の内径を閉鎖して前記貫通孔に圧入し、円筒内面の上記ステータコイル9-2 と対向する位置に円筒状のロータマグネット9-1 を固着した回転駆動体が構築される。
【０００６】
そして、上記回転駆動体のスピンドルハブ６に例えばスペーサ3-1 を介して２枚の磁気ディスク３を外周面に挿入して、円板状のクランプ板７を前記スピンドルハブ６に圧入した回転軸５の一端面側に設けた雌ねじ孔にボルト８を螺入して締め付けることにより、スピンドルハブ６と２枚の磁気ディスク３およびクランプ板７を結合させ、前記回転軸５を上記ベース１のハウジング部1a内部に固定した玉軸受４の内輪に挿入してカバー２を冠着し、前記ステータコイル9-2 に電流を印加することにより磁気ディスク３と結合したスピンドルハブ６が高速回動するように構成されている。
【０００７】
【発明が解決しようとする課題】
以上説明した従来の磁気ディスク装置のスピンドル構造で問題となるのは、図３に示す如く外周面に磁気ディスク３を嵌入したスピンドルハブ６の中心線上に回転軸５をベース１方向に突出させ、ボルト８によりクランプ板７を前記回転軸５のカバー２端面に締着して当該磁気ディスク３を固定しているから回転体の高さが大きくなる。
【０００８】
また、前記スピンドルハブ６より突出した回転軸５をベース１に成形したハウジング部1a内部の２個の玉軸受４に挿入しているから、当該スピンドルハブ６は片持ち状の回転軸５により回転自在に軸支され、当該磁気ディスク３の回転精度を確保するには前記２個の玉軸受４の間隔を大きく要求，即ちハウジング部1aの高さを低く出来ないために、装置の薄型化を阻害しているという問題が生じている。
【０００９】
更に、薄型化のためには、玉軸受４の外輪を回転させるスピンドル構造の方が好適であるが、しかし、この外輪回転の構造ではクランプ板７を締着するボルト８を中央に設けることが出来ないという問題が生じる。
【００１０】
本発明は上記のような問題点に鑑み、ベースに立設した固定軸に磁気ディスクを固定したスピンドルハブを回転自在に軸支することにより、磁気ディスクの回転が高精度で且つ装置の薄形化が容易となる磁気ディスク装置のスピンドル構造の提供を目的とする。
【００１１】
【課題を解決するための手段】
本発明は、図１に示すように磁気ディスクを回転支持するスピンドルであって、
外周面に軸受を保持してベースに立設した両端固定の固定軸と、
下部外周面に磁気ディスクを位置決めする挟持部を形成するとともにその内側に上記軸受を収容するハウジング部を該挟持部と同心状に該ハウジング部の下端面を上記ベースに設けたステータコイルの高さよりも更にベース側に突出させて形成し、さらに該ハウジング部内径にねじ締着部を形成するとともに上記固定軸回りで回転するよう上記ステータコイルと対向する面にロータマグネットを固着する溝を形成したスピンドルハブと、
該スピンドルハブの上記締着部に上記固定軸を貫通させる中心孔を形成した単一のねじで結合されるクランプ部材とを有し、
上記クランプ部材を上記ハウジング部の締着部にねじで結合した状態において、当該クランプ部材と上記スピンドルハブの挟持部との間に上記磁気ディスクを挟持した。
【００１２】
【作用】
本発明では、磁気ディスク３をスピンドルハブ16の外周面に嵌入してその雌ねじ部にクランプ板17を介してクランプボルト18を螺入することで当該磁気ディスク３が固定でき、このスピンドルハブ16のハウジング部16ａに一対の玉軸受４を収容してその内輪をベース11の内面に立設して固定した固定軸15に嵌入することで、上記磁気ディスク３を高精度に回転させるとともに装置の薄形化が可能となる。
【００１３】
【実施例】
以下図１〜図３について本発明の実施例を詳細に説明する。
【００１４】
図１は本発明の磁気ディスク装置のスピンドル構造を示す模式的側断面図、図２は本実施例のクランプボルトを示す拡大斜視図、図３は従来の磁気ディスク装置のスピンドル構造を示す模式的側断面図を示し、図中において、図３と同一部材には同一記号が付してあるが、その他の11は磁気ディスク装置のベース、15は磁気ディスクの回転中心となる固定軸、16は磁気ディスクの回転を保持するスピンドルハブ、17はスピンドルハブと磁気ディスクを結合するためのクランプ板、18は結合用のクランプボルトである。
【００１５】
ベース11は、カバー２を冠着すると磁気ディスク装置の内部が密閉できる大きさの平板に後述する固定軸15が立設できるように形成したものである。
【００１６】
固定軸15は、図１に示すように玉軸受４の内輪に静合する外径でベース11とカバー２の間隔と等しい長さに機械的強度の高い金属より成形した軸の両端に、前記ベース11およびカバー２の内面に対して垂直に固定する図示していない立設手段を備えたものである。
【００１７】
スピンドルハブ16は、図１に示すように外周縁に磁気ディスク３の中心孔を嵌入して位置決め挟持する段付け部を成形した円板の中央部に、上記固定軸15に嵌入した玉軸受４の外輪を挿入して固定できる円筒状のハウジング部16ａを前記段付け部と同心状に該ハウジング部16ａの下端面をベース11に設けたステータコイル19-2の高さよりも更にベース側に突出して形成し、ハウジング部16ａのカバー２側内径に雌ねじを螺刻するとともにベース11と対向する面にロータマグネット19-1を固着する溝を成形している。
【００１８】
クランプ板17は、上記スピンドルハブ16の磁気ディスク３を挟持する部分の外径と略等しい円板で外周縁に磁気ディスク３を押圧するリング状の突起を成形して、前記円板の中央にスピンドルハブ16の雌めじ部により若干大きな内径の貫通孔を穿設した剛性を有するものである。
【００１９】
クランプボルト18は、図１に示すように上記クランプ板17の貫通孔を挿通してスピンドルハブ16の雌めじ部に螺入することで前記貫通孔周縁を該スピンドルハブ16の方向へ押圧できるよう、図２に示す如くにスピンドルハブ16のハウジング部16ａが嵌入できる内径とスピンドルハブ16の雌めじ部に螺入できる雄ねじ部18ｃを成形した円筒の一端側に、上記クランプ板17の貫通孔周縁を押圧できる外径のフランジ部18ｂを成形するとともに端面に締め付け回転用のスリット18ｄを形成したものである。
【００２０】
上記部材を使用した磁気ディスク装置のスピンドル構造の説明は、図１に示す如くスピンドルハブ16のロータマグネット19-1と対応する位置にステータコイル19-2を固着したベース11に、上記固定軸15を図示していない立設手段により偏平状のステータコイル19-2を固着した内面に対して垂直に立設する。
【００２１】
また、スピンドルハブ16の下端面よりも突出させたハウジング部16ａに２個の玉軸受４を一定の間隔で挿入して該玉軸受４の少なくとも一部を該スピンドルハブ16の下端面より下の位置に該外輪を固定し、上記ベース11と対向する面に成形した溝に偏平状のロータマグネット19-1を接着剤により固着するとともに外周の段付きに磁気ディスク３を嵌入して、クランプ板17の貫通孔にクランプボルト18の雄ねじ部を挿通してスピンドルハブ16の雌ねじに螺入・締め付けることにより回転体を構築する。
【００２２】
そして、上記ベース11の内面に立設された固定軸15に上記スピンドルハブ16に固定した玉軸受４の内輪を嵌入してカバー２を冠着することで、ベース11とカバー２よりなる空間に磁気ディスク３と結合したスピンドルハブ16が収納され、前記ステータコイル19-2に電流を印加することにより当該スピンドルハブ16が高速回動するように構成している。
【００２３】
その結果、スピンドルハブ16の外周部に嵌入した磁気ディスク３は、クランプ板17を介して、上記ハウジング部のベース側に突設させた該スピンドルハブ16の下端面より下の位置に玉軸受を配置することにより、ハウジング部上部内径に形成した雌ねじ部に、クランプボルト18を螺入することにより固定でき、このスピンドルハブ16のハウジング部16ａに収容された一対の玉軸受４をベース11の内面に立設した固定軸15に嵌入しているから、磁気ディスク３は高精度に回転するとともに容易に装置の薄型化をはかることができる。
【００２４】
【発明の効果】
以上の説明から明らかなように本発明によれば極めて簡単な構造で、磁気ディスクの回転が高精度になるとともに装置の薄型化が容易になる等の利点があり、著しい経済的及び、信頼性向上の効果が期待できる磁気ディスク装置のスピンドル構造を提供することができる。
【図面の簡単な説明】
【図１】 本発明の磁気ディスク装置のスピンドル構造を示す模式的側断面図である。
【図２】 本実施例のクランプボルトを示す拡大斜視図である。
【図３】 従来の磁気ディスク装置のスピンドル構造を示す模式的側断面図である。
【符号の説明】
２はカバー、
３は磁気ディスク、
４は玉軸受、
11はベース、
15は固定軸、
16はスピンドルハブ、 16ａはハウジング部、
17, はクランプ板、
18はクランプボルト、
18ａは中心孔、 18ｂはフランジ部、
18ｃは雄ねじ部、 18ｄはスリット、
19-1はロータマグネット、
19-2はステータコイル、[0001]
[Industrial application fields]
The present invention relates to a spindle structure of a magnetic disk device widely used for external storage devices of various computers.
[0002]
Recently, the magnetic disk device has been remarkably improved in storage density at a rate of more than 10 times in 10 years, and the progress of miniaturization of the device has been remarkable against the background of this high recording density. Recently, miniaturization has progressed to 5 inch to 3.5 inch and further 2.5 inch discs.
[0003]
In such a process of miniaturization, thinning is more strongly demanded. In particular, a spindle mechanism whose rotational accuracy is important is the thinning, and this rotational accuracy can be secured. There is a need for a spindle structure of a magnetic disk device that can be easily reduced in thickness.
[0004]
[Prior art]
As shown in FIG. 3, the spindle structure of a magnetic disk device that has been widely used in the past is a cylinder in which two ball bearings 4 are inserted in the center so that the inside of the magnetic disk device can be sealed when a cover 2 is attached. Two ball bearings 4 that support high-speed rotation are inserted into the housing 1a at regular intervals on a base 1 that is provided with a protruding housing portion 1a, and the outer ring is fixed. A base portion is constructed in which a cylindrical stator coil 9-2 for rotationally driving a spindle hub 6 described later is fixed to the outer peripheral surface.
[0005]
In addition, a magnetic disk 3 is fitted on the outer peripheral surface to position the center position, and a stepped portion for holding the magnetic disk 3 is provided on the outer peripheral surface on one end in a cylinder made of light metal that fixes the rotor magnet 9-1 to the inner diameter. A spindle hub 6 provided with a closed inner diameter on the other end side and a through-hole formed in the center thereof has a slightly longer rigidity with respect to the height of the housing portion 1a with an outer diameter that fits with the inner ring of the ball bearing 4 A rotary drive body is constructed in which the inner diameter of the rotary shaft 5 having the inner diameter is closed and press-fitted into the through hole, and a cylindrical rotor magnet 9-1 is fixed to a position on the inner surface of the cylinder facing the stator coil 9-2. .
[0006]
Then, a rotary shaft in which two magnetic disks 3 are inserted into the outer peripheral surface of the spindle hub 6 of the rotary driving body via, for example, a spacer 3-1, and a disc-shaped clamp plate 7 is press-fitted into the spindle hub 6. A bolt 8 is screwed into and tightened into a female screw hole provided on one end face side of the spindle 5 to couple the spindle hub 6 with the two magnetic disks 3 and the clamp plate 7, and the rotary shaft 5 is connected to the housing of the base 1. The spindle hub 6 coupled to the magnetic disk 3 is rotated at a high speed by inserting it into the inner ring of the ball bearing 4 fixed inside the portion 1a, attaching the cover 2 and applying a current to the stator coil 9-2. It is configured.
[0007]
[Problems to be solved by the invention]
The problem with the spindle structure of the conventional magnetic disk apparatus described above is that the rotating shaft 5 protrudes in the direction of the base 1 on the center line of the spindle hub 6 with the magnetic disk 3 fitted on the outer peripheral surface as shown in FIG. Since the clamp plate 7 is fastened to the end face of the cover 2 of the rotary shaft 5 by the bolts 8 and the magnetic disk 3 is fixed, the height of the rotating body increases.
[0008]
Further, since the rotating shaft 5 protruding from the spindle hub 6 is inserted into the two ball bearings 4 inside the housing portion 1a formed in the base 1, the spindle hub 6 is rotated by the cantilevered rotating shaft 5. In order to ensure the rotational accuracy of the magnetic disk 3 that is freely supported, the distance between the two ball bearings 4 is required to be large, that is, the height of the housing 1a cannot be reduced. The problem of hindering has arisen.
[0009]
Further, in order to reduce the thickness, a spindle structure that rotates the outer ring of the ball bearing 4 is preferable. However, in this outer ring rotating structure, a bolt 8 that fastens the clamp plate 7 is provided at the center. The problem of not being possible arises.
[0010]
In view of the above-described problems, the present invention provides a highly accurate rotation of a magnetic disk and a thin apparatus by supporting a spindle hub, which fixes a magnetic disk, on a fixed shaft standing on a base. An object of the present invention is to provide a spindle structure of a magnetic disk device that can be easily manufactured.
[0011]
[Means for Solving the Problems]
The present invention is a spindle for rotating and supporting a magnetic disk as shown in FIG.
A fixed shaft that is fixed at both ends and is held up on the base by holding a bearing on the outer peripheral surface;
A holding portion for positioning the magnetic disk is formed on the lower outer peripheral surface, and a housing portion for housing the bearing is concentric with the holding portion on the inner side of the lower end surface of the housing portion. further formed to protrude on the base side, forming a groove for fixing the rotor magnet to the stator coil which faces to rotate at the fixed axis with further formed screw fastening portion to the housing inner diameter A spindle hub,
A clamp member coupled to the fastening portion of the spindle hub by a single screw formed with a central hole through which the fixed shaft passes .
In a state where the upper SL clamping member coupled by screws to the fastening portion of the housing portion, sandwiches the magnetic disk between the clamp member and the pinching portion of the spindle hub.
[0012]
[Action]
In the present invention, the magnetic disk 3 can be fixed by inserting the magnetic disk 3 into the outer peripheral surface of the spindle hub 16 and screwing the clamp bolt 18 into the female thread portion via the clamp plate 17. The pair of ball bearings 4 are accommodated in the housing portion 16a and the inner ring thereof is fitted on the fixed shaft 15 which is erected and fixed on the inner surface of the base 11, thereby rotating the magnetic disk 3 with high accuracy and reducing the thickness of the apparatus. It can be shaped.
[0013]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.
[0014]
FIG. 1 is a schematic sectional side view showing a spindle structure of a magnetic disk apparatus of the present invention, FIG. 2 is an enlarged perspective view showing a clamp bolt of this embodiment, and FIG. 3 is a schematic diagram showing a spindle structure of a conventional magnetic disk apparatus. The same reference numerals are given to the same members as in FIG. 3, but the other 11 is the base of the magnetic disk device, 15 is a fixed shaft that is the center of rotation of the magnetic disk, and 16 is A spindle hub for holding the rotation of the magnetic disk, 17 is a clamp plate for connecting the spindle hub and the magnetic disk, and 18 is a clamp bolt for connection.
[0015]
The base 11 is formed so that a fixed shaft 15 (to be described later) can be erected on a flat plate having a size capable of sealing the inside of the magnetic disk device when the cover 2 is attached.
[0016]
As shown in FIG. 1, the fixed shaft 15 has an outer diameter that fits the inner ring of the ball bearing 4 and has a length equal to the distance between the base 11 and the cover 2 and is formed at both ends of a shaft formed of a metal having high mechanical strength. A standing means (not shown) for fixing the base 11 and the inner surface of the cover 2 perpendicularly is provided.
[0017]
As shown in FIG. 1, the spindle hub 16 has a ball bearing 4 fitted to the fixed shaft 15 at the center of a disk formed with a stepped portion for positioning and clamping the central hole of the magnetic disk 3 at the outer periphery. A cylindrical housing portion 16a that can be fixed by inserting an outer ring protrudes further to the base side than the height of the stator coil 19-2 provided on the base 11 with the lower end surface of the housing portion 16a concentrically with the stepped portion. A groove for fixing a rotor magnet 19-1 is formed on a surface facing the base 11 and a female screw is screwed into the inner diameter of the cover 2 side of the housing portion 16a.
[0018]
The clamp plate 17 is a circular plate that is substantially the same as the outer diameter of the portion of the spindle hub 16 that holds the magnetic disk 3, and a ring-shaped protrusion that presses the magnetic disk 3 is formed on the outer periphery, and is formed at the center of the disk. A through hole having a slightly larger inner diameter is formed by the female threaded portion of the spindle hub 16 and has rigidity.
[0019]
As shown in FIG. 1, the clamp bolt 18 is inserted into the through hole of the clamp plate 17 and screwed into the female threaded portion of the spindle hub 16 so that the periphery of the through hole can be pressed toward the spindle hub 16. As shown in FIG. 2, an inner diameter of the spindle hub 16 into which the housing portion 16a can be fitted and a male screw portion 18c that can be screwed into the female threaded portion of the spindle hub 16 are formed on one end of the cylinder, and the periphery of the through hole of the clamp plate 17 A flange portion 18b having an outer diameter capable of pressing is formed, and a clamping rotation slit 18d is formed on the end face.
[0020]
The description of the spindle structure of the magnetic disk apparatus using the above-described member is as follows. As shown in FIG. 1, the fixed shaft 15 is fixed to the base 11 having a stator coil 19-2 fixed to a position corresponding to the rotor magnet 19-1 of the spindle hub 16. Is vertically installed with respect to the inner surface to which the flat stator coil 19-2 is fixed.
[0021]
Further, two ball bearings 4 are inserted into the housing portion 16a protruding from the lower end surface of the spindle hub 16 at a constant interval so that at least a part of the ball bearing 4 is located below the lower end surface of the spindle hub 16. The outer ring is fixed at a position, and a flat rotor magnet 19-1 is fixed to the groove formed on the surface facing the base 11 with an adhesive, and the magnetic disk 3 is fitted to the outer circumferential step, and the clamp plate The rotating body is constructed by inserting the male screw portion of the clamp bolt 18 into the through hole 17 and screwing and tightening the female screw of the spindle hub 16.
[0022]
Then, the inner ring of the ball bearing 4 fixed to the spindle hub 16 is fitted into the fixed shaft 15 erected on the inner surface of the base 11 and the cover 2 is crowned, so that the space formed by the base 11 and the cover 2 is obtained. A spindle hub 16 coupled to the magnetic disk 3 is accommodated, and the spindle hub 16 is configured to rotate at a high speed by applying a current to the stator coil 19-2.
[0023]
As a result, the magnetic disk 3 fitted in the outer peripheral portion of the spindle hub 16 has a ball bearing at a position below the lower end surface of the spindle hub 16 projecting from the base side of the housing portion via the clamp plate 17. By disposing, a clamp bolt 18 can be screwed into a female thread portion formed on the upper inner diameter of the housing portion, and the pair of ball bearings 4 accommodated in the housing portion 16a of the spindle hub 16 can be fixed to the inner surface of the base 11. Since the magnetic disk 3 rotates with high accuracy, the apparatus can be easily made thin.
[0024]
【The invention's effect】
As is apparent from the above description, according to the present invention, there are advantages such as extremely simple structure, high-precision rotation of the magnetic disk and easy thinning of the apparatus, and remarkable economic and reliability. It is possible to provide a spindle structure of a magnetic disk device that can be expected to be improved.
[Brief description of the drawings]
FIG. 1 is a schematic sectional side view showing a spindle structure of a magnetic disk device of the present invention.
FIG. 2 is an enlarged perspective view showing a clamp bolt of the present embodiment.
FIG. 3 is a schematic side sectional view showing a spindle structure of a conventional magnetic disk device.
[Explanation of symbols]
2 is the cover,
3 is a magnetic disk,
4 is a ball bearing,
11 is the base,
15 is a fixed shaft,
16 is a spindle hub, 16a is a housing part,
17, clamp plate,
18 is a clamp bolt,
18a is the center hole, 18b is the flange,
18c is a male thread part, 18d is a slit,
19-1 is a rotor magnet,
19-2 is a stator coil,
Claims (3)
外周面に軸受を保持してベースに立設した両端固定の固定軸と、
下部外周面に磁気ディスクを位置決めする挟持部を形成するとともにその内側に上記軸受を収容するハウジング部を該挟持部と同心状に該ハウジング部の下端面を上記ベースに設けたステータコイルの高さよりも更にベース側に突出させて形成し、さらに該ハウジング部内径にねじ締着部を形成するとともに上記固定軸回りで回転するよう上記ステータコイルと対向する面にロータマグネットを固着する溝を形成したスピンドルハブと、
該スピンドルハブの上記締着部に上記固定軸を貫通させる中心孔を形成した単一のねじで結合されるクランプ部材とを有し、
上記クランプ部材を上記ハウジング部の締着部にねじで結合した状態において、当該クランプ部材と上記スピンドルハブの挟持部との間に上記磁気ディスクを挟持した
ことを特徴とする磁気ディスク装置のスピンドル構造。A spindle for rotating and supporting a magnetic disk,
A fixed shaft that is fixed at both ends and is held up on the base by holding a bearing on the outer peripheral surface;
A holding portion for positioning the magnetic disk is formed on the lower outer peripheral surface, and a housing portion for housing the bearing is concentric with the holding portion on the inner side of the lower end surface of the housing portion. further formed to protrude on the base side, forming a groove for fixing the rotor magnet to the stator coil which faces to rotate at the fixed axis with further formed screw fastening portion to the housing inner diameter A spindle hub,
A clamp member coupled to the fastening portion of the spindle hub by a single screw formed with a central hole through which the fixed shaft passes .
In a state where the upper SL clamping member coupled by screws to the fastening portion of the housing portion, the spindle of the magnetic disk device characterized by nipping the magnetic disk between the clamp member and the pinching portion of the spindle hub Construction.
上記クランプボルトを上記スピンドルハブのハウジング部に締着した状態で、上記磁気ディスクをスピンドルハブの挟持部と上記クランプ板との間に挟持する
ようにした
ことを特徴とする請求項１記載の磁気ディスク装置のスピンドル構造。The clamp member comprises a clamp bolt in which a flange portion is formed on the outer periphery and a clamp plate that comes into contact with the flange portion of the clamp bolt,
The magnetic disk according to claim 1, wherein the magnetic disk is clamped between a clamping part of the spindle hub and the clamp plate in a state where the clamp bolt is fastened to the housing part of the spindle hub. The spindle structure of the disk unit.
ことを特徴とする請求項２記載の磁気ディスク装置のスピンドル構造。3. The spindle structure of the magnetic disk apparatus according to claim 2, wherein the fastening portion of the spindle hub has a configuration in which a male screw formed on the clamp bolt is screwed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003145560A JP3726822B2 (en) | 2003-05-23 | 2003-05-23 | Spindle structure of magnetic disk drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003145560A JP3726822B2 (en) | 2003-05-23 | 2003-05-23 | Spindle structure of magnetic disk drive |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05786392A Division JP3482421B2 (en) | 1992-03-16 | 1992-03-16 | Spindle structure of magnetic disk drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004005978A JP2004005978A (en) | 2004-01-08 |
| JP3726822B2 true JP3726822B2 (en) | 2005-12-14 |
Family
ID=30438144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003145560A Expired - Fee Related JP3726822B2 (en) | 2003-05-23 | 2003-05-23 | Spindle structure of magnetic disk drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3726822B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100674989B1 (en) | 2005-08-26 | 2007-01-29 | 삼성전자주식회사 | Hard disk and spindle motor assembly |
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2003
- 2003-05-23 JP JP2003145560A patent/JP3726822B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004005978A (en) | 2004-01-08 |
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