Low-profile disk drive motor

Details Low-profile disk drive motor Low-profile disk drive motor

H - Electricity

02

K

H02K 21/22 (2006.01) F16C 17/03 (2006.01) F16C 17/06 (2006.01) F16C 27/02 (2006.01) F16C 33/10 (2006.01) G11B 19/00 (2006.01) G11B 19/20 (2006.01) H02K 5/16 (2006.01) H02K 29/00 (2006.01)

Patent

CA 2081375

2081375 9114308 PCTABS00007 A disk drive motor having a low profile, with a gas-lubricated deflecting pad support (32) usable in the motor and elsewhere, includes a cup-shaped rotor (10) having an integral cylindrical portion (12) extending from the base of the cup which may be a shaft or a large hollow extension that encloses the stator windings (21). The stator (20) can be conventional or can have a closed end and/or a cup-like portion (22) to simplify construction and eliminate the need for a seal. A support (30) mounted on stator or rotor supports the rotor for rotation relative to the stator. It can be a deflecting pad such as hydrodynamic bearing, or plane or gas-lubricated deflecting pad supports. The gas-lubricated deflecting pad support (32) includes bearing pads (31) and a support structure (50) 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 pad and support surfaces produces a pressurized gas film between the surfaces.

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