Low-profile disk drive motor with deflecting-pad bearings

Details Low-profile disk drive motor with deflecting-pad bearings Low-profile disk drive motor with deflecting-pad bearings

1992-05-15

1993-06-01

Hannon, Thomas R.

Bearings

Rotary bearing

Fluid bearing

384106, 384119, F16C 3206

Patent

active

052153851

ABSTRACT:
A disk drive motor having a low profile construction and a gas-lubricated deflecting pad support usable in the disk drive motor and elsewhere.
The motor includes a cup-shaped rotor having an integral cylindrical portion extending from the base of the cup; the cylindrical extension may be a shaft or a large hollow extension which encloses the stator windings. The stator can be conventional or can have a closed end and/or a cup-like portion to simplify construction and eliminate the need for a seal. A support mounted on the stator or the rotor supports the rotor for rotation relative to the stator. The support can be a deflecting pad support such as a deflecting pad hydrodynamic bearing or the plane or gas-lubricated deflecting pad support disclosed herein.
The gas-lubricated deflecting pad support member includes bearing pads and a support structure which supports the bearings for strictly radial movement. A contoured surface is formed on the pad surfaces or a support surface opposing the pad surfaces or both. Relative rotation between the pad surfaces and the support surface results in the development of a pressurized gas film between the support surface and the pad surface.

REFERENCES:
patent: 2153397 (1939-04-01), Sandler
patent: 4453838 (1984-06-01), Loizeau
patent: 4767222 (1988-08-01), Paletta et al.
patent: 4886378 (1989-12-01), Matake
patent: 5017022 (1991-05-01), Ruggles et al.

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