JPH09115233A - Plate-like member holding means on shaft - Google Patents
Plate-like member holding means on shaftInfo
- Publication number
- JPH09115233A JPH09115233A JP26678395A JP26678395A JPH09115233A JP H09115233 A JPH09115233 A JP H09115233A JP 26678395 A JP26678395 A JP 26678395A JP 26678395 A JP26678395 A JP 26678395A JP H09115233 A JPH09115233 A JP H09115233A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- shaft
- flange member
- holding
- fitted
- 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
Landscapes
- Moving Of Heads (AREA)
- Rotational Drive Of Disk (AREA)
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、磁気ディスク装置
に係り、装置内で用いられる軸への板状部材の保持手段
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic disk device, and more particularly to a means for holding a plate member on a shaft used in the device.
【０００２】[0002]
【従来の技術】磁気ディスク装置においては、小型化と
記憶容量の増大が求められるため、限られた装置高さ内
に可能な限り多くの枚数のディスクを実装する技術が要
求される。これには、ディスクに記録された信号の記録
再生用ヘッドを支持する、板状のアームの積層体の薄型
化が必要である。これに関わる技術としては、例えば特
開平６−２３６６３７号公報に示された例が既に知られ
ている。2. Description of the Related Art In a magnetic disk device, miniaturization and increase in storage capacity are required, and therefore, a technique for mounting as many disks as possible within a limited device height is required. To this end, it is necessary to reduce the thickness of the laminated body of plate-shaped arms that supports the recording / reproducing head for signals recorded on the disc. As a technique related to this, for example, an example disclosed in Japanese Patent Laid-Open No. 6-236637 is already known.
【０００３】[0003]
【発明が解決しようとする課題】ところで、近年の磁気
ディスク装置の小型化と記録密度増大には著しいものが
あり、板状のアームの積層体には、薄型化と同時に一層
の高精度化が要求されている。なぜならば、記録密度の
増大のためには、板状のアームの面内方向のサブミクロ
ンオーダの変形または位置ずれを防止する必要がある
し、また、ディスク枚数の増加にともなって板状のアー
ムとディスクの設定すきまが減少するため、アームの面
外方向の形状精度や組立精度の向上が必要だからであ
る。本発明の目的は、薄型化を実現しつつ、アーム等の
板状部材の、確実、高精度な軸への保持手段を提供する
ことにある。By the way, there is a remarkable reduction in size and increase in recording density of a magnetic disk device in recent years, and a laminated body of plate-shaped arms is required to be thin and highly accurate at the same time. Is required. This is because, in order to increase the recording density, it is necessary to prevent the plate-shaped arm from deforming or being displaced in the in-plane direction on the order of submicrons, and the plate-shaped arm can be increased as the number of discs increases. Since the set clearance of the disk is reduced, it is necessary to improve the shape accuracy and the assembly accuracy of the arm in the out-of-plane direction. An object of the present invention is to provide a means for holding a plate-like member such as an arm on a shaft with certainty and high accuracy while realizing a reduction in thickness.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
の第１の手段は、軸に嵌合するフランジ部材Ａが設けら
れた板状部材、フランジ部材Ａに嵌合するフランジ部材
Ｂが設けられた板状部材、およびフランジ部材Ｂに嵌合
するホルダの組み合わせである。また上記目的を達成す
るための第２の手段は、軸に設けられた、フランジ部材
Ａまたはフランジ部材Ｂのいずれかの平面部を保持する
円環状の座面である。A first means for achieving the above object is to provide a plate-like member provided with a flange member A fitted to a shaft and a flange member B fitted to the flange member A. It is a combination of the plate-shaped member and the holder fitted to the flange member B. A second means for achieving the above object is an annular seating surface that is provided on the shaft and that holds the flat surface portion of either the flange member A or the flange member B.
【０００５】上記第１の手段においては、まずすきまば
めによりホルダ内に、フランジ部材Ｂを嵌合させ、次に
すきまばめによりフランジ部材Ｂ内にフランジ部材Ａを
嵌合させ、さらにしまりばめによりフランジ部材Ａ内に
軸を嵌合させることにより、フランジ部材Ａおよびフラ
ンジ部材Ｂが半径方向に拡大し、ホルダとの間にしめし
ろが発生して、フランジ部材Ａおよびフランジ部材Ｂ、
ひいては板状部材が軸に対して確実に保持される。これ
により、組立後の板状部材の面内方向の位置ずれが防止
される。In the first means, first, the flange member B is fitted in the holder by a loose fit, then the flange member A is fitted in the flange member B by a loose fit, and then the tight fit is made. By fitting the shaft into the flange member A, the flange member A and the flange member B are expanded in the radial direction, and interference is generated between the flange member A and the flange member.
As a result, the plate-like member is securely held on the shaft. As a result, displacement of the plate member after assembly in the in-plane direction is prevented.
【０００６】また、上記第２の手段においては、軸に設
けられた円環状の座面により、フランジ部材Ａ、ホル
ダ、およびフランジ部材Ｂが軸方向に正確に位置決めさ
れる。これにより、板状部材の面外方向の組立精度が向
上する。In the second means, the flange member A, the holder, and the flange member B are accurately positioned in the axial direction by the annular bearing surface provided on the shaft. Thereby, the assembling accuracy of the plate member in the out-of-plane direction is improved.
【０００７】[0007]
【発明の実施の形態】以下、図面を用いて本発明の実施
例を説明する。Embodiments of the present invention will be described below with reference to the drawings.
【０００８】図１は、本発明の軸への板状部材の保持手
段の一実施例である。ホルダ１に設けられた穴の内面
に、支持されるべき第１の板状部材２０１に取り付けら
れたフランジ部材Ｂ３０１がすきまばめにより嵌合さ
れ、さらにフランジ部材Ｂ３０１の内面に、支持される
べき第２の板状部材２０２に取り付けられたフランジ部
材Ａ３０２がすきまばめにより嵌合される。この状態
で、フランジ部材Ａ３０２の内面に、軸４を押し込んで
しまりばめにより嵌合させると、フランジ部材Ａ３０２
およびフランジ部材Ｂ３０１が押し広げられてホルダ１
に押し付けられる。この結果、板状部材２０１と２０２
が軸４に確実に保持される。FIG. 1 shows an embodiment of a means for holding a plate member on a shaft according to the present invention. The flange member B301 attached to the first plate-shaped member 201 to be supported is fitted to the inner surface of the hole provided in the holder 1 by loose fit, and further to be supported on the inner surface of the flange member B301. The flange member A302 attached to the second plate-shaped member 202 is fitted by loose fitting. In this state, when the shaft 4 is pushed into the inner surface of the flange member A302 and fitted by an interference fit, the flange member A302
And the flange member B301 is pushed open and the holder 1
Pressed to. As a result, the plate members 201 and 202
Is securely held on the shaft 4.
【０００９】また、本実施例では軸４に円環状の座面５
が設けられ、これによりフランジ部材Ｂ３０１の平面部
３０１１が軸４に対して精度良く位置決めされるが、位
置決めが不要な場合にはこれを省略してもよい。In this embodiment, the shaft 4 has an annular seat surface 5
Is provided, whereby the flat surface portion 3011 of the flange member B301 is accurately positioned with respect to the shaft 4, but this may be omitted if the positioning is unnecessary.
【００１０】以上のような構成により、部品点数を削減
しつつ、小さなスペース内で、板状部材の軸への高精度
な保持が実現される。With the above structure, it is possible to reduce the number of parts and to hold the plate member on the shaft with high accuracy in a small space.
【００１１】なお軸４は、軸受６を介して、ベース７に
設けられたピン８に支持されている。The shaft 4 is supported by a pin 8 provided on a base 7 via a bearing 6.
【００１２】図２は、本発明の軸への板状部材の保持手
段の第２の実施例であり、図１と同一部分は同一符号に
て示す。FIG. 2 shows a second embodiment of the means for holding the plate member on the shaft according to the present invention. The same parts as those in FIG. 1 are designated by the same reference numerals.
【００１３】本実施例では、軸４に支持されるべき板状
部材（２０１〜２０４）が４枚に増加した点、これにと
もなってフランジ部材Ｂ３０１およびフランジ部材Ａ３
０２がそれぞれ２個に増加した点、ホルダ（１０１、１
０２）が２枚に増加した点、および軸４に設けられた座
面５によりフランジ部材Ａ３０２の平面部３０２１が位
置決めされる点をのぞき、第１の実施例と同じであるの
で詳細な説明は省略する。このように、本発明によれば
支持されるべき板状部材が多い場合でも、板状部材の軸
への保持が容易に実現される。In this embodiment, the number of plate members (201 to 204) to be supported by the shaft 4 is increased to four, and along with this, the flange member B301 and the flange member A3.
02 is increased to 2 each, holder (101, 1
02) is increased to two and the flat surface portion 3021 of the flange member A302 is positioned by the seating surface 5 provided on the shaft 4, so that the detailed description will be given since it is the same as the first embodiment. Omit it. As described above, according to the present invention, even when there are many plate-shaped members to be supported, the plate-shaped members can be easily held on the shaft.
【００１４】なお、図１および図２の実施例において、
軸４とフランジ部材Ｂ３０１、フランジ部材Ａ３０２、
ホルダ１０１および１０２の間には、接着剤を塗布して
組立を行ってもよい。これにより、小さなしめしろでも
大きな保持力が得られるという効果が付加される。In the embodiment shown in FIGS. 1 and 2,
Shaft 4 and flange member B301, flange member A302,
An adhesive may be applied between the holders 101 and 102 for assembly. As a result, the effect that a large holding force can be obtained even with a small interference is added.
【００１５】図３は、本発明の軸への板状部材の保持手
段の第３の実施例であり、図２と同一部分は同一符号に
て示す。本実施例では、ホルダ１０１にコイル９が設け
られている。コイル９は、ベース７に設けられた、マグ
ネット１０を含むヨーク１１のギャップ中に置かれてお
り、コイル９、マグネット１０、およびヨーク１１によ
りボイスコイルモータが構成される。従って、コイル９
に通電することにより、板状部材２０１〜２０４を軸４
回りに駆動することができる。FIG. 3 shows a third embodiment of the means for holding the plate member on the shaft according to the present invention. The same parts as those in FIG. 2 are designated by the same reference numerals. In this embodiment, the holder 101 is provided with the coil 9. The coil 9 is placed in the gap of the yoke 11 including the magnet 10 provided on the base 7, and the coil 9, the magnet 10 and the yoke 11 constitute a voice coil motor. Therefore, the coil 9
The plate-shaped members 201 to 204 by rotating the shaft 4
Can be driven around.
【００１６】図４は、本発明の軸への板状部材の保持手
段を、軸へのアームの保持に適用した、磁気ディスク装
置の一実施例を示したものである。ベース７には、ディ
スク１２が保持されるスピンドル１３と、磁気ヘッド１
４を備えたアーム１５が保持される軸４が設けられる。
本実施例では、軸４とアーム１５の保持に図３に準じた
手段が適用される。軸４に保持されるホルダ１０１に
は、コイル（図示せず）が設けられ、このコイルとベー
ス７に設けられたヨーク１１によりボイスコイルモータ
が構成されて、アーム１５が駆動される。FIG. 4 shows an embodiment of a magnetic disk device in which the holding means for holding a plate member on a shaft according to the present invention is applied to hold an arm on a shaft. The base 7 has a spindle 13 for holding a disk 12 and a magnetic head 1
A shaft 4 is provided on which an arm 15 with 4 is held.
In this embodiment, a means according to FIG. 3 is applied to hold the shaft 4 and the arm 15. The holder 101 held by the shaft 4 is provided with a coil (not shown), and the coil and the yoke 11 provided on the base 7 constitute a voice coil motor, and the arm 15 is driven.
【００１７】なお、本実施例では、ディスクが２枚、ア
ームが４本使用されているが、ディスク枚数やアーム本
数はこれに限定されるものではないことは明らかであ
る。In this embodiment, two disks and four arms are used, but it is clear that the number of disks and the number of arms are not limited to this.
【００１８】[0018]
【発明の効果】本発明によれば、薄型化を実現しつつ、
アーム等の板状部材を、確実、高精度に軸に保持するこ
とができる。これにより、限られた装置高さ内でディス
クの実装枚数を増すことができ、磁気ディスク装置の小
型化と記憶容量の増大を図ることができる。According to the present invention, while realizing a thin structure,
A plate-shaped member such as an arm can be reliably and accurately held on the shaft. As a result, the number of mounted disks can be increased within a limited device height, and the magnetic disk device can be downsized and the storage capacity can be increased.
【図１】本発明の軸への板状部材の保持手段の一実施例
を示す断面図である。FIG. 1 is a cross-sectional view showing an embodiment of a means for holding a plate member on a shaft according to the present invention.
【図２】本発明の軸への板状部材の保持手段の第２の実
施例を示す断面図である。FIG. 2 is a sectional view showing a second embodiment of the holding means for holding the plate member on the shaft of the present invention.
【図３】本発明の軸への板状部材の保持手段の第３の実
施例を示す断面図である。FIG. 3 is a cross-sectional view showing a third embodiment of the plate-shaped member holding means on the shaft of the present invention.
【図４】本発明の軸への板状部材の保持手段を適用し
た、磁気ディスク装置の一実施例を示す斜視図である。FIG. 4 is a perspective view showing an embodiment of a magnetic disk device to which a holding member for holding a plate member on a shaft of the present invention is applied.
１…ホルダ、 １０１…ホルダ、 １０２…
ホルダ、２０１…板状部材、 ２０２…板状部材、
２０３…板状部材、２０４…板状部材、 ３０１
…フランジ部材Ｂ、３０１１…平面部、 ３０２…
フランジ部材Ａ、３０２１…平面部、 ４…
軸、 ５…座面、６…軸受、
７…ベース、 ８…ピン、９…コイル、
１０…マグネット、 １１…ヨーク、１２
…ディスク、 １３…スピンドル、 １４…
磁気ヘッド、１５…アーム。1 ... Holder, 101 ... Holder, 102 ...
Holder, 201 ... Plate-shaped member, 202 ... Plate-shaped member,
203 ... Plate-shaped member, 204 ... Plate-shaped member, 301
... Flange member B, 3011 ... Flat part, 302 ...
Flange member A, 3021 ... Plane part, 4 ...
Shaft, 5 ... Bearing surface, 6 ... Bearing,
7 ... Base, 8 ... Pin, 9 ... Coil,
10 ... Magnet, 11 ... Yoke, 12
… Disk, 13… Spindle, 14…
Magnetic head, 15 ... Arm.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高橋 毅 神奈川県小田原市国府津2880番地株式会社 日立製作所ストレージシステム事業部内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Takahashi 2880 Kozu, Odawara City, Kanagawa Hitachi Storage Systems Division
Claims (3)
状部材の保持手段において、軸に嵌合するフランジ部材
Ａが設けられた板状部材、フランジ部材Ａに嵌合するフ
ランジ部材Ｂが設けられた板状部材、およびフランジ部
材Ｂに嵌合するホルダから成ることを特徴とする、軸へ
の板状部材の保持手段。1. A holding means for holding a plate-shaped member on a shaft used in a magnetic disk device, wherein a plate-shaped member provided with a flange member A fitted to the shaft and a flange member B fitted to the flange member A are provided. A means for holding a plate-shaped member on a shaft, comprising: a plate-shaped member provided and a holder fitted to the flange member B.
フランジ部材Ｂのいずれかに設けられた平面部を保持す
る円環状の座面が、軸に設けられたことを特徴とする、
軸への板状部材の保持手段。2. The shaft according to claim 1, wherein the shaft is provided with an annular seating surface for holding a flat surface portion provided on either the flange member A or the flange member B.
A means for holding the plate member on the shaft.
にボイスコイルモータのコイルが設けられたことを特徴
とする、軸への板状部材の保持手段。3. A means for holding a plate-shaped member on a shaft according to claim 1, wherein the holder is provided with a coil of a voice coil motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26678395A JPH09115233A (en) | 1995-10-16 | 1995-10-16 | Plate-like member holding means on shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26678395A JPH09115233A (en) | 1995-10-16 | 1995-10-16 | Plate-like member holding means on shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09115233A true JPH09115233A (en) | 1997-05-02 |
Family
ID=17435636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26678395A Pending JPH09115233A (en) | 1995-10-16 | 1995-10-16 | Plate-like member holding means on shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09115233A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6597538B1 (en) | 1999-12-15 | 2003-07-22 | Nhk Spring Co., Ltd. | Suspension for disk drive |
| JP2007164832A (en) * | 2005-12-09 | 2007-06-28 | Samsung Electronics Co Ltd | Hard disk drive |
-
1995
- 1995-10-16 JP JP26678395A patent/JPH09115233A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6597538B1 (en) | 1999-12-15 | 2003-07-22 | Nhk Spring Co., Ltd. | Suspension for disk drive |
| JP2007164832A (en) * | 2005-12-09 | 2007-06-28 | Samsung Electronics Co Ltd | Hard disk drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Effective date: 20050201 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20050531 |