JPH0246572A - Supporting mechanism for lead screw shaft of motor for driving magnetic head of magnetic recorder - Google Patents
Supporting mechanism for lead screw shaft of motor for driving magnetic head of magnetic recorderInfo
- Publication number
- JPH0246572A JPH0246572A JP63196337A JP19633788A JPH0246572A JP H0246572 A JPH0246572 A JP H0246572A JP 63196337 A JP63196337 A JP 63196337A JP 19633788 A JP19633788 A JP 19633788A JP H0246572 A JPH0246572 A JP H0246572A
- Authority
- JP
- Japan
- Prior art keywords
- screw shaft
- lead screw
- bearing
- magnetic head
- ball
- 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
- 230000005389 magnetism Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Moving Of Heads (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は磁気記録装置の磁気ヘッド駆動用モータのリ
ードスクリューシャフトの支持機構に関するもので、殊
にリードスクリューシャフトのシャフトに直角方向の負
荷を支持する構成に関する。Detailed Description of the Invention (Field of Industrial Application) This invention relates to a support mechanism for a lead screw shaft of a motor for driving a magnetic head of a magnetic recording device. Concerning the supporting structure.
（従来の技術）
従来の磁気記録装置の磁気ヘッド駆動用モータのリード
スクリューシャフトの支持機構は、第２図に示すように
、Ｕ字形の取付フレーム１０の両立上り面１７．１７に
、同軸上にリードスクリューシャツ）１の軸直角方向の
負荷を支持するための軸受２及び６を設け、前記取付フ
レーム１０の一方の外側にロータマグネット７及びコイ
ルを収納したステータ８，８等モータ駆動部を設けた構
造が一般的に用いられている。又リードスクリューシャ
ツ）１の一方の端部の孔３に球体４を収納し、他端部に
形成した孔に別の球体１５を収納し、ステータ８，８に
架設した押え板１６でリードスクリューシャツ）ｌの他
端部を支持している。(Prior Art) As shown in FIG. 2, a support mechanism for a lead screw shaft of a magnetic head drive motor of a conventional magnetic recording device is a coaxial support mechanism for a lead screw shaft of a magnetic head drive motor of a conventional magnetic recording device. Bearings 2 and 6 are provided to support the load in the direction perpendicular to the axis of the lead screw shirt (lead screw shirt) 1, and motor drive parts such as stators 8 and 8 containing rotor magnets 7 and coils are installed on one outside of the mounting frame 10. The structure provided is commonly used. Also, a sphere 4 is stored in the hole 3 at one end of the lead screw shirt (1), another sphere 15 is stored in the hole formed at the other end, and the lead screw The other end of the shirt (shirt) is supported.
（発明の解決しようとする課題）
前記従来の磁気記録装置の磁気ヘッド駆動用モータのス
クリューシャフトｌの支持機構に於ては、ロータマグネ
ット７とステータヨーク８の内径の偏芯に起因して、ロ
ータマグネット７の磁気吸引力のバランスがくずれ、ロ
ータマグネット７はステータヨーク８との空隙の小さい
方向に引き寄せられる。従って、この力をＦ （ｇ）と
すれば、磁気ヘッド駆動用モータのスクリューシャフト
１の支持機構である軸受２，６に働く反力Ｒ，，Ｒ２は
、軸受２，６の距離をＬｌ 、軸受６と力Ｆの作用点と
の距離をＬ２ とすると、第４図に図示のようにモーメ
ントのつり合いよりＬｌ ＸＲ＋ ＝ Ｌ２ ＸＦ、ま
た力のつり合いよりＲ１＋Ｆ＝Ｒ２であるから
Ｒ２＝ （Ｌｌ ＋Ｌ２ ）／ＬＩ ＸＦとなる。(Problems to be Solved by the Invention) In the support mechanism for the screw shaft l of the magnetic head drive motor of the conventional magnetic recording device, due to the eccentricity of the inner diameters of the rotor magnet 7 and the stator yoke 8, The balance of the magnetic attraction force of the rotor magnet 7 is lost, and the rotor magnet 7 is drawn toward the direction where the gap with the stator yoke 8 is smaller. Therefore, if this force is F (g), then the reaction forces R,, R2 acting on the bearings 2, 6, which are the support mechanism of the screw shaft 1 of the magnetic head drive motor, will reduce the distance between the bearings 2, 6 by Ll, If the distance between the bearing 6 and the point of application of force F is L2, then Ll XR+ = L2 )/LI XF.
力Ｆによりスクリューシャフトｌに働く摩擦トルクＴｆ
は、スクリューシャフト１の径をｄ、軸受２部の摩擦係
数をル１．軸受６部の摩擦係数を川２とすると、スクリ
ューシャフト１に働く摩擦トルクＴｆは、
Ｔｆ＝ｄ／２ＸＦＸ（、ｐ−ＩＸＬ２ ／Ｌ＋＋１×（
Ｌｌ ＋Ｌ２ ） ／Ｌ＋） となる。Friction torque Tf acting on screw shaft l due to force F
The diameter of the screw shaft 1 is d, and the friction coefficient of the bearing 2 is 1. Assuming that the friction coefficient of the bearing 6 is Kawa 2, the friction torque Tf acting on the screw shaft 1 is as follows: Tf=d/2XFX(,p-IXL2/L++1×(
Ll +L2) /L+).
ここで、一般的な磁気ヘッド駆動用モータの諸元即ちｄ
＝ ０．３ ｃｍ、ｐ、ｌ＝ ０、ｐ２＝０．１５、Ｌ
Ｈ＝ ２．５ ｃｍ、 Ｌ２ ＝ ０．８ ｃｍを計算
に入れると、Ｔｔ ＝０．０３Ｆ （ｇ−ｃｍ）となり
、大きな摩擦トルク損失となる。この損失により、磁気
ヘッド駆動用モータは、ヘッド位置を正確に制御テキナ
くなり、かつヘッドキャリッジを駆動するのに大きなエ
ネルギーを必要とする等の問題点があった。そこで本発
明においては、軸受摩擦損失トルクの小さい磁気ヘッド
駆動用モータのリードスクリューシャフトの支持機構を
得ることを目的とする。Here, the specifications of a general magnetic head drive motor, namely d
= 0.3 cm, p, l= 0, p2=0.15, L
If H = 2.5 cm and L2 = 0.8 cm are taken into account, Tt = 0.03F (g-cm), resulting in a large frictional torque loss. Due to this loss, the magnetic head drive motor has problems such as being unable to accurately control the head position and requiring a large amount of energy to drive the head carriage. Therefore, it is an object of the present invention to provide a support mechanism for a lead screw shaft of a magnetic head drive motor with low bearing friction loss torque.
（課題を解決するための手段）
本発明は前記の目的を達成するために、回転自在のリー
ドスクリューシャフトのスクリュー部に設けた溝内をポ
ール又はニードルが摺動することにより、磁気ヘッドキ
ャリッジを直線的に変位する構成を有する磁気記録装置
の磁気ヘッド駆動用モータにおいて、リードスクリュー
シャフト１の一方の先端の孔部に球体を収納し、この球
体と取付フレームに装着されたピボット玉軸受とが接す
ることを可能とする軸受機構と、リードスクリューシャ
フトの他端にその外径を支持する軸受を設けたリードス
クリューシャフトの支持機構を提供するものである。(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention operates a magnetic head carriage by sliding a pole or a needle in a groove provided in a screw portion of a rotatable lead screw shaft. In a motor for driving a magnetic head of a magnetic recording device having a linear displacement configuration, a sphere is housed in a hole at one end of a lead screw shaft 1, and this sphere and a pivot ball bearing mounted on a mounting frame are connected. The present invention provides a support mechanism for a lead screw shaft, which includes a bearing mechanism that allows contact with the lead screw shaft, and a bearing that supports the outer diameter of the lead screw shaft at the other end.
（作用）
本発明によれば、ロータマグネット７が磁力によりステ
ータヨーク８の内径に引き寄せられる力Ｆと、磁気ヘッ
ド駆動用モータのリードスクリューシャフトの支持機構
である軸受２，６に働く反力ＲＩ ＊ Ｒ２との間に
は、軸受２と力Ｆの作用点との距離をし、軸受６と力Ｆ
の作用点の距離をＬ３とすると、第５図に図示のように
、モーメントのつり合いよりＬ Ｘ Ｒ＋ ＝ Ｌ３
Ｘ Ｒ２、また力のつり合いよりＲ，＋Ｒ２＝Ｆである
からＲ２＝Ｌ３／ （ＬｌＬ３ ）ＸＦとなる。(Function) According to the present invention, the rotor magnet 7 is attracted to the inner diameter of the stator yoke 8 by magnetic force F, and the reaction force RI acting on the bearings 2 and 6, which are the support mechanism of the lead screw shaft of the magnetic head drive motor. * R2 is the distance between bearing 2 and the point of application of force F, and the distance between bearing 6 and the point of force F
Assuming that the distance between the point of action of is L3, as shown in Fig. 5, from the balance of moments, L X R+ = L3
X R2, and since R,+R2=F from the balance of forces, R2=L3/(LlL3)XF.
力Ｆによりリードスクリューシャフトに働く摩擦トルク
Ｔｆ は、リードスクリューシャフト１の径をｄ、軸受
２部の摩擦係数をル１、軸受６部の摩擦係数をＩＬ２
とすると、
ここで、一般的な磁気ヘッド駆動用モータの諸元即ちｄ
＝０．３ｃｍ、ＪＪ−１＝Ｏ５ｋ２＝０．１５、ＬＬｌ
＋Ｌ２ ＝ ２．５ ｃｍ＋ ０．８ ｃ
ｍ −３，３ｃｍ。The friction torque Tf acting on the lead screw shaft due to force F is expressed as follows: the diameter of lead screw shaft 1 is d, the friction coefficient of bearing 2 is 1, and the friction coefficient of bearing 6 is IL2.
Then, the specifications of a general magnetic head drive motor, namely d
=0.3cm, JJ-1=O5k2=0.15, LLl
+L2 = 2.5 cm + 0.8 c
m −3.3 cm.
Ｌ３＝１ｃｍを計算に入れると、Ｔｒ ＝ ０．００７
Ｆ（ｇ−Ｃｍ）となる。これはすなわち従来例に比べ約
％の摩擦トルクであり、従って磁気ヘッド位置を正確に
制御しやすくなり、且つヘッドキャリッジを駆動するの
に必要なエネルギーを少なくすることができる。Taking L3=1cm into account, Tr=0.007
F(g-Cm). This is approximately % less frictional torque than that of the conventional example, making it easier to accurately control the position of the magnetic head and reducing the energy required to drive the head carriage.
（実施例） 以下、本発明の実施例を添付図面を参照して説明する。(Example) Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図は本発明の一実施例を示すものであり、リードス
クリューシャツ）１の一方の先端の孔部３に球体４を収
納し、前記球体４と取付フレームｌＯに設けられた孔１
１に収納固定されたピボット玉軸受５とが接するように
構成した軸受機構と、リードスクリューシャフト１の他
端にその外周を支持する軸受６を設け、さらにリードス
クリューシャツ）１の他端部に軸方向に長孔９を設け、
長孔９にコイルバネ１２を収納し、前記コイルバネ１２
外側に球体１３を配置し、前記球体１３の外側に設けた
押えカバー１４が球体１３と接触する様に構成する。FIG. 1 shows an embodiment of the present invention, in which a sphere 4 is housed in a hole 3 at one end of a lead screw shirt 1, and a hole 1 provided in a mounting frame 10 is connected to the sphere 4.
The other end of the lead screw shaft 1 is provided with a bearing 6 that supports the outer periphery of the lead screw shaft 1. A long hole 9 is provided in the axial direction,
A coil spring 12 is housed in the elongated hole 9, and the coil spring 12 is
A sphere 13 is disposed on the outside, and a presser cover 14 provided on the outside of the sphere 13 is configured to come into contact with the sphere 13.
又リードスクリューシャフト１の外周にロータマグネッ
ト７を装着し、その外側にコイルＣを収納したステータ
８を設ける。これらの部材はリードスクリューシャフト
の駆動部を構成する。Further, a rotor magnet 7 is attached to the outer periphery of the lead screw shaft 1, and a stator 8 containing a coil C is provided outside the rotor magnet 7. These members constitute the drive section of the lead screw shaft.
次に第３図は、この駆動部の回転運動を磁気ヘッドキャ
リッジの直線運動に変換する機構の路線図である。筐体
２０に架設したレール３２に支承されて矢印方向へ直線
運動をなすキャリッジ２２の下方に装着した板ばね３４
により、支持フレーム１０に支持されたリードスクリュ
ーシャフト１の螺旋溝ｌａ内にポール３６を押しつける
。Next, FIG. 3 is a route diagram of a mechanism that converts the rotational motion of the drive unit into linear motion of the magnetic head carriage. A leaf spring 34 is attached below the carriage 22 which is supported by a rail 32 installed on the housing 20 and moves linearly in the direction of the arrow.
As a result, the pawl 36 is pressed into the helical groove la of the lead screw shaft 1 supported by the support frame 10.
前記駆動部（通常はステッピングモータを用いる）の回
転によりリードスクリューシャフト１が回転し、この回
転運動はリードスクリューシャフトｌの螺旋溝１ａ、ポ
ール３６、板ばね３４を介して磁気ヘッド３８のキャリ
ッジ２２の矢印方向の直線運動に変換される。上記のポ
ールの代りにニードルを採用しても同様の目的を達する
ことができる。The lead screw shaft 1 rotates due to the rotation of the drive unit (usually using a stepping motor), and this rotational movement is transmitted to the carriage 22 of the magnetic head 38 via the helical groove 1a of the lead screw shaft 1, the pawl 36, and the leaf spring 34. is converted into linear motion in the direction of the arrow. A similar purpose can be achieved by employing a needle instead of the above-mentioned pole.
以上の様に構成されているので、リードスクリューシャ
ツ）ｌが回転中において、ロータマグネット７．７とス
テータ８，８の内径の偏芯に起因する磁気吸引力のバラ
ンスがくずれて、ロータマグネット７．７とステータ８
，８の内径との空隙の小さい方に引き寄せられる力Ｆは
第５図に示すように、磁気ヘッド駆動用モータのスクリ
ューシャフトの支持機構である軸受２，６に働く反力Ｒ
１，Ｒ２との間には、軸受２と力Ｆの作用点との距離を
Ｌ、軸受６と力Ｆの作用点の距離をＬ３とすると、モー
メントのつり合いよりＬＸＲ，＝Ｌ３ ＸＲ２また力の
つり合いよりＲ１＋Ｒ２＝Ｆであるので、Ｒ２＝Ｌ３
／ （Ｌ＋Ｌ３ ）ＸＦとなる。力Ｆによりスクリュー
シャフト１に働く摩擦トルクＴｆ は、スクリューシャ
フトｌの径をｄ（ｃｍ）、軸受２とスクリューシャフト
１の摩擦係数をル１、軸受６とスクリューシャフト１の
摩擦係数をル２とすると、
本実施例における諸元ｄ＝ ０．３ ｃｍ、 ｐ−＋
＝ ０１．２＝０．５、Ｌ＝ ３．３ ｃｍ、Ｌ３ ＝
１ ｃｍの時、Ｔｒ ＝ ０，００７ Ｆ （ｇ −
ｃｍ）となる。同様に既に説明したように従来の軸受構
造について計算すると、Ｔ（＝０．０３Ｆ （ｇ−ｃｍ
）となり、本発明によるリードスクリューシャフトの摩
擦トルク損失は従来例と比較して約％となる。With the structure described above, when the lead screw shirt (1) is rotating, the balance of the magnetic attraction force caused by the eccentricity of the inner diameter of the rotor magnet 7.7 and the stators 8, 8 is lost, and the rotor magnet 7. .7 and stator 8
As shown in FIG. 5, the force F that is attracted toward the smaller gap between the inner diameters of the magnetic head drive motors 2 and 8 is the reaction force R acting on the bearings 2 and 6, which are the support mechanism for the screw shaft of the magnetic head drive motor.
1 and R2, if the distance between bearing 2 and the point of application of force F is L, and the distance between bearing 6 and the point of application of force F is L3, then from the moment balance LXR, = L3 From the balance, R1+R2=F, so R2=L3
/ (L+L3)XF. The friction torque Tf acting on the screw shaft 1 due to the force F is expressed as follows: The diameter of the screw shaft l is d (cm), the friction coefficient between the bearing 2 and the screw shaft 1 is 1, and the friction coefficient between the bearing 6 and the screw shaft 1 is 2. Then, the specifications in this example are d = 0.3 cm, p-+
= 01.2 = 0.5, L = 3.3 cm, L3 =
At 1 cm, Tr = 0,007 F (g −
cm). Similarly, as explained above, when calculating the conventional bearing structure, T(=0.03F (g-cm
), and the friction torque loss of the lead screw shaft according to the present invention is about % compared to the conventional example.
（発明の効果）
以上説明したように、本発明によれば、ロータマグネッ
トの偏芯による磁気吸収力のアンバランスに起因するリ
ードスクリューシャフトの軸直角方向の力Ｆによる軸受
摩擦損失トルクを従来例の約％に減少できる為、磁気ヘ
ッド位置を正確に制御することが可能になり、且つヘッ
ドキャリッジを駆動するのに必要なエネルギーを少なく
できるという利点を有する。(Effects of the Invention) As explained above, according to the present invention, the bearing friction loss torque due to the force F in the direction perpendicular to the axis of the lead screw shaft due to the unbalance of the magnetic absorption force due to the eccentricity of the rotor magnet can be reduced compared to the conventional example. This has the advantage that the position of the magnetic head can be accurately controlled and the energy required to drive the head carriage can be reduced.
第１図は本発明に係るリードスクリューシャフト支持機
構の縦断面図。
第２図は従来例のリードスクリューシャフト支持機構の
縦断面図。
第３図は本発明に係る磁気記録装置の磁気ヘッド駆動装
置の路線断面図。
第４図は従来例の構成のモーメント及び力のつり合いの
説明図。
第５図は本発明に係る構成のモーメント及び力のつり合
いの説明図。
ｌ・・・リードスクリューシャフト、３・・・孔、４・
・・球体、５・・・ピボット玉軸受、６・・・軸受、７
・・・ロータマグネット、８・・・ステータ、９・・・
長孔、１０・・・取付フレーム、１１・・・ピボット用
孔１２・・・コイルばねFIG. 1 is a longitudinal sectional view of a lead screw shaft support mechanism according to the present invention. FIG. 2 is a longitudinal sectional view of a conventional lead screw shaft support mechanism. FIG. 3 is a cross-sectional view of a magnetic head drive device of a magnetic recording device according to the present invention. FIG. 4 is an explanatory diagram of the balance of moments and forces in a conventional configuration. FIG. 5 is an explanatory diagram of the moment and force balance of the configuration according to the present invention. l...Lead screw shaft, 3...hole, 4...
... Sphere, 5... Pivot ball bearing, 6... Bearing, 7
...Rotor magnet, 8...Stator, 9...
Long hole, 10...Mounting frame, 11...Pivot hole 12...Coil spring
Claims (1)
部に設けた溝内を、ボール又はニードルが摺動すること
により磁気ヘッドキャリッジを直線的に変位する構成を
有する磁気記録装置の磁気ヘッド駆動用モータにおいて
、リードスクリューシャフトの一方の端部にピボット玉
軸受を、他端部にその外径を支持する軸受を設けたこと
を特徴とする磁気記録装置の磁気ヘッド駆動用モータの
リードスクリューシャフトの支持機構。 ２、リードスクリューシャフトの一方の端部孔部に球体
を収納し、この球体と接触可能なピボット玉軸受を取付
フレームに形成し、リードスクリューシャフトの他端に
その外周を支持する軸受を設けたことを特徴とする請求
項１記載の磁気記録装置の磁気ヘッド駆動用モータのリ
ードスクリューシャフトの支持機構。 ３、ピボット玉軸受は取付フレームの孔部に収納してな
る請求項１記載の磁気記録装置の磁気ヘッド駆動用モー
タのリードスクリューシャフトの支持機構。[Claims] 1. Magnetism of a magnetic recording device having a configuration in which a magnetic head carriage is linearly displaced by a ball or needle sliding in a groove provided in a screw portion of a rotatable lead screw shaft. A lead for a magnetic head driving motor of a magnetic recording device, characterized in that the head driving motor is provided with a pivot ball bearing at one end of the lead screw shaft and a bearing supporting the outer diameter of the lead screw shaft at the other end. Support mechanism for screw shaft. 2. A sphere is housed in the hole at one end of the lead screw shaft, a pivot ball bearing that can come into contact with the sphere is formed in the mounting frame, and a bearing is provided at the other end of the lead screw shaft to support its outer periphery. 2. A support mechanism for a lead screw shaft of a magnetic head drive motor of a magnetic recording device according to claim 1. 3. A support mechanism for a lead screw shaft of a magnetic head driving motor of a magnetic recording apparatus according to claim 1, wherein the pivot ball bearing is housed in a hole in the mounting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63196337A JPH0246572A (en) | 1988-08-05 | 1988-08-05 | Supporting mechanism for lead screw shaft of motor for driving magnetic head of magnetic recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63196337A JPH0246572A (en) | 1988-08-05 | 1988-08-05 | Supporting mechanism for lead screw shaft of motor for driving magnetic head of magnetic recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246572A true JPH0246572A (en) | 1990-02-15 |
Family
ID=16356153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63196337A Pending JPH0246572A (en) | 1988-08-05 | 1988-08-05 | Supporting mechanism for lead screw shaft of motor for driving magnetic head of magnetic recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246572A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599563A1 (en) * | 1992-11-23 | 1994-06-01 | Quantum Corporation | A low friction bearing |
| EP0701069A1 (en) * | 1993-09-03 | 1996-03-13 | Minebea Co.,Ltd. | Bearing system in a motor for FDD |
| EP0720168A2 (en) * | 1994-12-29 | 1996-07-03 | Minebea Co.,Ltd. | Bearing installation in a floppy disk driver motor |
| US5537275A (en) * | 1993-12-10 | 1996-07-16 | Hewlett-Packard Company | Lead screw positioning mechanism with each end of the lead screw self-aligning and tiltable |
| KR20040019648A (en) * | 2002-08-28 | 2004-03-06 | 삼성전기주식회사 | Optical Disk Driver |
| KR100467832B1 (en) * | 2002-09-02 | 2005-01-24 | 삼성전기주식회사 | Lid Screw Stoper Device of Optical Disk Driver |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6211266B2 (en) * | 1978-10-02 | 1987-03-11 | Geburu* Torotsukusu Gmbh | |
| JPS62134869A (en) * | 1985-12-05 | 1987-06-17 | Seiko Epson Corp | Flexible disk drive |
-
1988
- 1988-08-05 JP JP63196337A patent/JPH0246572A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6211266B2 (en) * | 1978-10-02 | 1987-03-11 | Geburu* Torotsukusu Gmbh | |
| JPS62134869A (en) * | 1985-12-05 | 1987-06-17 | Seiko Epson Corp | Flexible disk drive |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599563A1 (en) * | 1992-11-23 | 1994-06-01 | Quantum Corporation | A low friction bearing |
| US5510940A (en) * | 1992-11-23 | 1996-04-23 | Quantum Corporation | Ball spindle for reduced friction rotary actuator in disk drive |
| EP0701069A1 (en) * | 1993-09-03 | 1996-03-13 | Minebea Co.,Ltd. | Bearing system in a motor for FDD |
| US5537275A (en) * | 1993-12-10 | 1996-07-16 | Hewlett-Packard Company | Lead screw positioning mechanism with each end of the lead screw self-aligning and tiltable |
| EP0720168A2 (en) * | 1994-12-29 | 1996-07-03 | Minebea Co.,Ltd. | Bearing installation in a floppy disk driver motor |
| EP0720168A3 (en) * | 1994-12-29 | 1997-04-16 | Minebea Co Ltd | Bearing installation in a floppy disk driver motor |
| US5777413A (en) * | 1994-12-29 | 1998-07-07 | Minebea Co., Ltd. | Bearing installation in a floppy disk driver motor |
| KR20040019648A (en) * | 2002-08-28 | 2004-03-06 | 삼성전기주식회사 | Optical Disk Driver |
| KR100467832B1 (en) * | 2002-09-02 | 2005-01-24 | 삼성전기주식회사 | Lid Screw Stoper Device of Optical Disk Driver |
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