JPH0329161A - Disk driving device - Google Patents
Disk driving deviceInfo
- Publication number
- JPH0329161A JPH0329161A JP16252589A JP16252589A JPH0329161A JP H0329161 A JPH0329161 A JP H0329161A JP 16252589 A JP16252589 A JP 16252589A JP 16252589 A JP16252589 A JP 16252589A JP H0329161 A JPH0329161 A JP H0329161A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- spindle
- fixed
- rotor
- inner ring
- 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
- 238000000034 method Methods 0.000 description 3
- UFNIBRDIUNVOMX-UHFFFAOYSA-N 2,4'-dichlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1Cl UFNIBRDIUNVOMX-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
Landscapes
- Rotational Drive Of Disk (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はフロッピーディスク等の円盤状の記録媒体を回
転駆動させるディスク駆動装置に関するものである．
［従来の技術］
第３図は従来のフロッピーディスク駆動装置（以下ＦＤ
Ｄという〉の主要部の概略構成を示す側断面図で、ｌは
本体ベースとしてアルミダイキャスト又はプレス等で作
られるシャーシ，２は情報が記録・再生される媒体（メ
ディア）、２３．２３′は軸受（ベアリング）で、媒体
保持駆動を行うスピンドル５を軸支している．メディア
２は図示していないクランプ機構により、スピンドル２
５に固定される．２６はロータでその内側に駆動マグネ
ット７を固定保持している．
８はディスク駆動モータ用のプリント回路基板（ＰＣＢ
）である．２９は駆動コイルで、平面状に所定の間隔で
配置されており，周知の電流切換方法による電磁変換力
を利用し、駆動マグネット７に回転力を与える，１０は
ステータヨークで駆動マグネット７と閉磁路を形成する
，１１はメディア２に情報の記録・再生を行う磁気ヘッ
ドであり，図示していないヘッドキャリッジに固定され
、図中矢印方向に移動可能とされる．２２はロータ２６
とスピンドル２５を固定する創めネジ，１３は軸受２３
，２３’を保持，固定するハウジングでシャーシｌに固
着されている．［発明が解決しようとする課８］
しかしながら上記、従来例においては、次のような問題
がある．
■軸受部分の厚さが、スピンドル，軸受，ロータと重な
った状態に構威されているので、薄くするには限界があ
る．
■磁気ヘッドの厚みがモータ部分の厚さに積み上げられ
ることになり、この磁気ヘッドの厚さとモータの厚さと
を加えた厚みを、何らかの方法で薄くするには限界があ
った．
この発明はかかる従来の課題を解決するためになされた
もので、磁気ヘッド及びモータの淳さを、他の部分で吸
収することによって装置全体の薄型化を行うことのでき
るディスク駆動装置を提供することを目的とする．
［ｆｆ題を解決するための千段］
上記の目的を達成するために、この発明のディスク駆動
装置は駆動装置の中心部に、スピンドルより口径の大き
な１つのラジアルベアリングを設け、このラジアルベア
リングの内輪内側に前記スピンドルを嵌入することによ
って，軸受部を形成した構造をイｊするものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disk drive device that rotationally drives a disk-shaped recording medium such as a floppy disk. [Prior art] Figure 3 shows a conventional floppy disk drive (hereinafter referred to as FD).
23.23' is a side cross-sectional view showing a schematic configuration of the main parts of the main body, l is a chassis made of aluminum die-casting or pressing as the main body base, 2 is a medium on which information is recorded and reproduced, and 23.23' is a bearing that supports the spindle 5 that drives and holds the medium. The media 2 is attached to the spindle 2 by a clamp mechanism (not shown).
It is fixed at 5. 26 is a rotor, and a drive magnet 7 is fixedly held inside the rotor. 8 is a printed circuit board (PCB) for the disk drive motor.
). Reference numeral 29 denotes a drive coil, which is arranged in a plane at predetermined intervals, and applies rotational force to the drive magnet 7 by using electromagnetic conversion force by a well-known current switching method. 10 is a stator yoke that connects the drive magnet 7 with the closed magnet. A magnetic head 11 records and reproduces information on the medium 2, and is fixed to a head carriage (not shown) and is movable in the direction of the arrow in the figure. 22 is the rotor 26
and a screw for fixing the spindle 25, and 13 is the bearing 23.
, 23' is fixed to the chassis l with a housing that holds and fixes the parts. [Problem 8 to be solved by the invention] However, the above conventional example has the following problems. ■There is a limit to how thin the bearing part can be made because it overlaps the spindle, bearing, and rotor. ■The thickness of the magnetic head was added to the thickness of the motor, and there was a limit to how much the thickness of the magnetic head plus the thickness of the motor could be reduced by any method. The present invention has been made to solve such conventional problems, and provides a disk drive device that can reduce the thickness of the entire device by absorbing the stiffness of the magnetic head and motor in other parts. The purpose is to [A thousand steps to solve the ff problem] In order to achieve the above object, the disk drive device of the present invention is provided with one radial bearing having a larger diameter than the spindle in the center of the drive device, and this radial bearing is By fitting the spindle inside the inner ring, a structure in which a bearing portion is formed is improved.
［作用］
本発明によれば、大口径のラジアルベアリングを１個使
用し、内輪でスピンドルを保持することにより、スピン
ドルとベアリングの厚みが加えられない．軸受が１個で
すみ、又、面対向タイプなのて、ロータの吸着力で子圧
がかけられ、その上装置の薄型化が可能になる．
［実施例］
第１図は本発明のディスク駆動装置の一実施例を示す側
断面図で、第２図は第１図の装置を下から見た斜視図で
あり、第１図、第２図において、第３図と同一符号は同
一又は相当部分を示すのて説明は省略する．
第ｌ図において，第３図と異なる点を挙げると、軸受３
は大口径ラジアルベアリングで、かつその内輪内側にス
ピンドル５を固着している．４は止め輪で、シャーシｌ
に図示していないクランパで固定されている．ロータ６
はスピンドル５に止めネジｌ２で固定されている．従っ
て、駆動マグネット７の吸着力により、ロータ６が上方
向に力を受け、その吸着力で軸受３に予圧をかけ安定さ
せている，１０はステータヨークで、接着．ネジ止め等
でシャーシｌに固着されている．磁気ヘッド１１の挿入
される部分が絞られ、ステータヨーク１０の凹部１０ａ
を形成している．この凹部１０ａの部分はスペースがな
い為、その部分に駆動コイル９を配さない設計とするか
、又はモータ用のＰＣＢ８に開口部８ａを設け，そこに
ｗＡ動コイル９ａを設けても良．い．駆動コイル９ａは
接着等でモータ川のＰＣＢ８又はステータヨーク１０に
固定される．
第２図において、駆動コイル９（又は９ａ）は６個の３
相駆動として表わしているか、９個の３相駆動としても
良いし、凹部１０ａの部分の駆動コイルを設けない方法
もある．しかしこの場合は力のバランスが均一とならな
い欠点がある。[Function] According to the present invention, by using one large-diameter radial bearing and holding the spindle with the inner ring, the thickness of the spindle and bearing is not increased. Only one bearing is required, and since it is a face-to-face type, sub-pressure is applied by the rotor's adsorption force, and furthermore, the device can be made thinner. [Embodiment] Fig. 1 is a side sectional view showing an embodiment of the disk drive device of the present invention, and Fig. 2 is a perspective view of the device shown in Fig. 1 viewed from below. In the figure, the same reference numerals as in FIG. 3 indicate the same or corresponding parts, and the explanation will be omitted. In Fig. 1, the difference from Fig. 3 is that the bearing 3
is a large-diameter radial bearing, and the spindle 5 is fixed inside the inner ring. 4 is a retaining ring, which is attached to the chassis l.
It is fixed with a clamper (not shown). Rotor 6
is fixed to the spindle 5 with a set screw l2. Therefore, the rotor 6 receives an upward force due to the attraction force of the drive magnet 7, and the attraction force applies a preload to the bearing 3 to stabilize it. 10 is a stator yoke, which is bonded. It is fixed to the chassis l with screws, etc. The part into which the magnetic head 11 is inserted is narrowed and the recess 10a of the stator yoke 10
is formed. Since there is no space in this recessed portion 10a, the design may be such that the drive coil 9 is not placed in that portion, or an opening 8a may be provided in the motor PCB 8 and the wA moving coil 9a may be provided there. stomach. The drive coil 9a is fixed to the motor PCB 8 or the stator yoke 10 by adhesive or the like. In FIG. 2, the drive coil 9 (or 9a) has six 3
It is expressed as a phase drive, or it may be nine three-phase drives, or there is also a method in which no drive coil is provided in the recessed portion 10a. However, in this case, there is a drawback that the balance of forces is not uniform.
［発明の効果］
以上説明したとおり、本発明は面対向タイプのスピンド
ルモータを使用したディスク駆動装置において、大口径
のラジアルベアリングの内輪にスピンドルを埋設固着す
ることにより、軸受部の薄型化を可能とした．[Effects of the Invention] As explained above, the present invention makes it possible to make the bearing portion thinner by embedding and fixing the spindle in the inner ring of a large-diameter radial bearing in a disk drive device using a face-to-face type spindle motor. It was.
第１図は本発明のディスク駆動装置の一実施例を示す側
断面図、第２図は第１図の装置を下から見た斜視図、第
３図は従来のフロッピーディスク駆ｆｈ装置の主要部分
の概略構成を示す側断面図である．
図中．
ｌ：シャーシ ２：メディア
３：ベアリング（軸受〉
４：止め輪 ５：スピンドル
６：ロータ ７：駆動マグネット８：ＰＣＢ
８ａ：開口部FIG. 1 is a side sectional view showing an embodiment of the disk drive device of the present invention, FIG. 2 is a perspective view of the device shown in FIG. It is a side sectional view showing the schematic structure of the part. In the figure. l: Chassis 2: Media 3: Bearing 4: Retaining ring 5: Spindle 6: Rotor 7: Drive magnet 8: PCB
8a: Opening
Claims (1)
置において、この駆動装置の中心部に、スピンドルより
口径の大きな１つのラジアルベアリングを設け、このラ
ジアルベアリングの内輪内側に前記スピンドルを嵌入す
ることによって、軸受部を形成したことを特徴とするデ
ィスク駆動装置。In a disk drive device equipped with a surface-facing spindle motor, a radial bearing with a diameter larger than that of the spindle is provided in the center of the drive device, and the spindle is fitted inside the inner ring of this radial bearing to create a bearing. What is claimed is: 1. A disk drive device characterized by forming a section.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16252589A JPH0329161A (en) | 1989-06-27 | 1989-06-27 | Disk driving device |
| US07/543,106 US5124863A (en) | 1989-06-27 | 1990-06-25 | Disk drive device having reduced thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16252589A JPH0329161A (en) | 1989-06-27 | 1989-06-27 | Disk driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0329161A true JPH0329161A (en) | 1991-02-07 |
Family
ID=15756278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16252589A Pending JPH0329161A (en) | 1989-06-27 | 1989-06-27 | Disk driving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0329161A (en) |
-
1989
- 1989-06-27 JP JP16252589A patent/JPH0329161A/en active Pending
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