Disk driving device with hub flange secured between yoke and dri

Details Disk driving device with hub flange secured between yoke and dri Disk driving device with hub flange secured between yoke and dri

1997-02-28

1999-03-02

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 1702

Patent

active

058779183

ABSTRACT:
A disk driving device including a hub which rotatably supports a disk with the aid of bearings, a yoke which is fixedly secured to the hub so as to be turned together with the hub, a drive magnet unit which is fixedly mounted on the inner cylindrical surface of a cylindrical portion of the yoke, and a stator core confronted with the drive magnet unit. In the device, the yoke includes a bent portion and the hub includes a flange which protrudes below and outwardly from a disk mounting portion of the hub and which has an upper surface having an inner diameter substantially equal to an inner diameter of the bent portion of the yoke. The flange is located below a disk mounting portion, and the flange is fixedly held between the inner surface of the bent portion of the yoke and the upper end face of the drive magnet unit.

REFERENCES:
patent: 4604665 (1986-08-01), Muller et al.
patent: 4818907 (1989-04-01), Shirotori
patent: 4882643 (1989-11-01), Shirotori
patent: 5047677 (1991-09-01), Mineta et al.
patent: 5128819 (1992-07-01), Elsaesser et al.
patent: 5325004 (1994-06-01), Mori et al.

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