JPH0329159A - Disk driving device - Google Patents
Disk driving deviceInfo
- Publication number
- JPH0329159A JPH0329159A JP16252489A JP16252489A JPH0329159A JP H0329159 A JPH0329159 A JP H0329159A JP 16252489 A JP16252489 A JP 16252489A JP 16252489 A JP16252489 A JP 16252489A JP H0329159 A JPH0329159 A JP H0329159A
- Authority
- JP
- Japan
- Prior art keywords
- stator yoke
- pcb
- magnetic head
- motor
- fixed
- 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.)
- Granted
Links
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- UFNIBRDIUNVOMX-UHFFFAOYSA-N 2,4'-dichlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1Cl UFNIBRDIUNVOMX-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 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
- 230000036316 preload Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 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トル５を軸支している。メディア
２は図示していないクランブ機構により、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。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 sectional view showing a schematic configuration of the main parts of the main body (referred to as D), 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, 23.23' is a bearing that supports the spindle 5 that drives and holds the medium. The media 2 is moved to the spindle 2 by a clamp mechanism (not shown).
It is fixed at 5. A rotor 26 has a drive magnet 7 fixedly held inside thereof.
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。ｌＯは
ステータヨークて駆動マグネット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
ドてあり、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。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 using electromagnetic conversion force by a well-known current switching method. lO forms a closed magnetic path with the stator yoke and the drive magnet 7. Reference numeral 11 denotes a magnetic head for recording and reproducing information on the medium 2, which is fixed to a head carriage (not shown) and is movable in the direction of the arrow in the figure.
２２はロータ２６とスピンドル２５を固定する止めネジ
、ｌ３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。22 is a set screw that fixes the rotor 26 and spindle 25, and l3 is a housing that holds and fixes the bearings 23 and 23', which is fixed to the chassis l.
［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。[Problem 8 to be solved by the invention] However, the above conventional example has the following problems.
■軸受部分の厚さが，スピンドル，軸受．ロータと重な
った状態に構成されているので、薄くするには限界があ
る．
■磁気ヘッドの厚みか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かあ
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、磁気ヘット及びモータの厚さを、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．
［３８を解決するための手段］
上記の目的を達成するために，この発明のディスク駆動
装置は磁気ヘッドの移動する部分に対応する部分のステ
ータヨークに凹部を形成し、この凹部に相当する部分の
プリント回路基板に開口部を設けて駆動コイル挿入部を
形成したものである。■The thickness of the bearing part is the same as that of the spindle and bearing. Since it is configured to overlap the rotor, there is a limit to how thin it can be made. ■The thickness of the magnetic head or the thickness of the motor part would be stacked up, and there was a limit to how thin the thickness of the magnetic head plus the thickness of the motor could be made thinner by any means. 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 thickness of the magnetic head and motor with other parts. The purpose is to [Means for Solving Problem 38] In order to achieve the above object, the disk drive device of the present invention has a concave portion formed in the stator yoke at a portion corresponding to the moving portion of the magnetic head, and a concave portion corresponding to the concave portion. The drive coil insertion portion is formed by providing an opening in the printed circuit board.
［作用］
本発明はステータヨークを凹状に形成し、その中に磁気
ヘッドを入れ，このステータスヨークの部分に相当する
部分のＰＣＢに開口部をくり抜き、この開口部に駆動コ
イルの設置スペースを設けるのでスピンドルモータ部の
薄型化が可能になる。[Function] In the present invention, the stator yoke is formed into a concave shape, a magnetic head is placed inside the stator yoke, an opening is cut out in the PCB in a portion corresponding to the status yoke, and a space for installing the drive coil is provided in this opening. This allows the spindle motor section to be made thinner.
［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、ｗＳ３図と同一符号は
同一又は相当部分を示すので説明は省略する．
第１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．磁気ヘット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
駆動コイル９ａを設けても良い．駆動コイル９ａは接着
等でモータ用のＰＣＢ８．又はステータヨーク１０に固
定される。[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 those in the wS3 figure indicate the same or corresponding parts, so 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, and 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 preloads the bearing 3 to stabilize it. 10 is the stator yoke, which is glued. 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 concave 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 drive coil 9a may be provided there. The drive coil 9a is attached to the motor PCB 8. by gluing or the like. Or it is fixed to the stator yoke 10.
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が、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か均一とならな
い欠点がある．［発明の効果］
以上説明したとおり、本発明は、面対向タイプのスビン
トルモータを使用したディスク駆動装置において、
■磁気ヘット移動部のステータヨークを凹状に形成する
ことにより、その部分の厚さを薄く出来る．
■ステータヨークの凹部のモータ用のＰＣＢに開口部を
設け、その中にコイルを設置するスペースを作ることに
より、回転力の安定化を図ることかできる等の効果があ
る．In FIG. 2, the drive coil 9 (or 9a) has six 3
Although shown as a phase drive, nine three-phase drives may be used, or there is also a method in which no drive coil is provided in the recessed portion 10a. However, in this case, the disadvantage is that the force is not evenly balanced. [Effects of the Invention] As explained above, in a disk drive device using a surface-facing type Svintle motor, the present invention has the following advantages: ■ By forming the stator yoke of the magnetic head moving part into a concave shape, the thickness of that part can be reduced. can be made thinner. ■Providing an opening in the motor PCB in the concave part of the stator yoke and creating a space in which to install the coil has the effect of stabilizing the rotational force.
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動装置の主要部分の
概略構威を示す側断面図である．
図中．
２：メディア
（軸受）
５：スピンドル
７：駆動マグネット
８ａ：開口部
ｌＯ：ステータヨーク
ｌ：シャーシ
３：ベアリング
４：止め輪
６：ロータ
８：ＰＣＢ
９．９ａ：駆動コイル
１０ａ ：凹部
ｌ１：磁気ヘッド
ｌ２：止めネジ
ｌ３：ハウシング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. 1 viewed from below, and FIG. 3 is the main parts of a conventional floppy disk drive device. FIG. 2 is a side sectional view showing the schematic structure of In the figure. 2: Media (bearing) 5: Spindle 7: Drive magnet 8a: Opening lO: Stator yoke l: Chassis 3: Bearing 4: Retaining ring 6: Rotor 8: PCB 9.9a: Drive coil 10a: Recess l1: Magnetic head l2: Set screw l3: Housing
Claims (1)
において、磁気ヘッドの移動する部分に対応する部分の
ステータヨークに凹部を形成し、この凹部に相当する部
分のプリント回路基板に開口部を設けて駆動コイル挿入
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 having a surface-facing spindle motor, a recess is formed in the stator yoke in a portion corresponding to the portion where the magnetic head moves, and an opening is provided in the printed circuit board in the portion corresponding to the recess to connect the drive coil. A disk drive device characterized in that an insertion portion is formed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1162524A JP2645667B2 (en) | 1989-06-27 | 1989-06-27 | Disk drive |
| 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 |
|---|---|---|---|
| JP1162524A JP2645667B2 (en) | 1989-06-27 | 1989-06-27 | Disk drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0329159A true JPH0329159A (en) | 1991-02-07 |
| JP2645667B2 JP2645667B2 (en) | 1997-08-25 |
Family
ID=15756260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1162524A Expired - Fee Related JP2645667B2 (en) | 1989-06-27 | 1989-06-27 | Disk drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2645667B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002065878A (en) * | 2000-08-24 | 2002-03-05 | Inoac Corp | String for mask |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60200754A (en) * | 1984-03-21 | 1985-10-11 | Sankyo Seiki Mfg Co Ltd | Drive motor |
-
1989
- 1989-06-27 JP JP1162524A patent/JP2645667B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60200754A (en) * | 1984-03-21 | 1985-10-11 | Sankyo Seiki Mfg Co Ltd | Drive motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002065878A (en) * | 2000-08-24 | 2002-03-05 | Inoac Corp | String for mask |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2645667B2 (en) | 1997-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |