JPH0445344U

JPH0445344U -

Info

Publication number: JPH0445344U
Application number: JP8746790U
Authority: JP
Priority date: 1990-08-23
Filing date: 1990-08-23
Publication date: 1992-04-17
Anticipated expiration: 2005-06-28
Also published as: JPH0728613Y2

Description

[Brief explanation of the drawing]

第１図は本考案の実施例によるＦＤＤ用デイス
ク駆動モータの平面図、第２図は同モータの側断
面図、第３図は第２図の要部拡大図、第４図及び
第５図はロータヨーク外周部の異なる構造例を示
す側断面図、第６図はインデツクス検出部の異な
る構造例を示す側断面図、第７図はチヤツキング
機構要部の下面図、第８図は第７図のａ−ａ′線
による断面図、第９図はチヤツキング機構の作用
を説明する上面図、第１０図は従来のＦＤＤ用モ
ータのロータヨークを説明する要部の側断面図、
第１１図は他の実施例によるモータ要部の側断面
図、第１２図は同モータ要部の上面図である。１……ベース、２……金属基板、３ａ，３ｂ…
…磁気ヘツド、４……スピンドルシヤフト、５，
５′……ベアリング、６……ハウジング、７……
フランジ、８……ロータヨーク、８′……補助ヨ
ーク、９……駆動マグネツト、１０……ＦＧマグ
ネツト、１１……インデツクスマグネツト、１２
……突極型鉄芯ヨーク、１３……コイル、１４…
…駆動ピン、１５……デイスクのセンターハブ、
１９……予圧バネ、２３……ホール素子、２４…
…ヨーク。 Fig. 1 is a plan view of an FDD disk drive motor according to an embodiment of the present invention, Fig. 2 is a side sectional view of the motor, Fig. 3 is an enlarged view of the main parts of Fig. 2, and Figs. 4 and 5. 6 is a side sectional view showing a different structural example of the rotor yoke outer circumference, FIG. 6 is a side sectional view showing a different structural example of the index detection section, FIG. 7 is a bottom view of the main part of the chucking mechanism, and FIG. 9 is a top view illustrating the action of the chucking mechanism; FIG. 10 is a sectional side view of the main parts of the rotor yoke of a conventional FDD motor;
FIG. 11 is a side sectional view of the main parts of a motor according to another embodiment, and FIG. 12 is a top view of the main parts of the same motor. 1...Base, 2...Metal substrate, 3a, 3b...
...Magnetic head, 4...Spindle shaft, 5,
5'...Bearing, 6...Housing, 7...
Flange, 8... Rotor yoke, 8'... Auxiliary yoke, 9... Drive magnet, 10... FG magnet, 11... Index magnet, 12
... Salient pole type iron core yoke, 13 ... Coil, 14 ...
...Drive pin, 15...Disc center hub,
19... Preload spring, 23... Hall element, 24...
…yoke.

Claims

[Claims for Utility Model Registration] 1. A disk drive motor of a disk drive device that rotationally drives a disk as a recording medium, comprising: a rotor yoke to which a component of a chucking mechanism for holding the disk is attached; and a coil wound therein; It has an iron core yoke that faces parallel to the rotor yoke and is fixed with a screw, and the screw is tightened into a threaded hole formed in the iron core yoke to connect the iron core yoke to the rotor yoke side. A disk drive motor characterized by being configured so that it does not protrude above a surface. 2. In a disk drive motor of a disk drive device that rotationally drives a disk as a recording medium, a rotor yoke is provided with components of a chucking mechanism that holds the disk, and a rotor yoke is wound with a coil and faces parallel to the rotor yoke. 1. A disk drive motor comprising an iron core yoke fixed to a housing of the motor, wherein the housing is integrally formed with a center part of the iron core yoke by molding. 3. The disk drive motor according to claim 2, wherein the housing is fixed by a mold tapping screw so that the screw does not protrude above the surface of the housing on the rotor yoke side. 4. The iron core yoke according to claim 2 or 3, wherein the iron core yoke is configured as a laminate of a plurality of plate materials, and the plurality of plate materials are held by the housing and fixed to each other. Disc drive motor.