Improved spindle shaft for attaching a cover in a disk drive

Details Improved spindle shaft for attaching a cover in a disk drive Improved spindle shaft for attaching a cover in a disk drive

1995-01-23

1996-09-10

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9912, G11B 1702

Patent

active

055552110

ABSTRACT:
A spindle shaft attachment technique for a disk drive includes a conical tip formed on, or added to, the top of the spindle shaft in order that it might be embedded in or contact a substantially planar, interior surface of the HDA cover at a location determined by the perpendicularity of the spindle as set by the baseplate without forcing the top of the spindle shaft to a predetermined screw hole or recessed cone location on the cover. The spindle shaft attachment technique disclosed allows for use of a relatively longer spindle shaft for a given height form factor drive and, therefore, allows a greater spacing between upper and lower spindle bearings resulting in greater stiffness and an increased rocking mode frequency.

REFERENCES:
patent: 4578726 (1986-03-01), Boehm
patent: 4717977 (1988-01-01), Brown
patent: 5282100 (1994-01-01), Tacklind et al.
patent: 5352947 (1994-10-01), MacLeod

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