Under-the-hub disk drive spin motor

Details Under-the-hub disk drive spin motor Under-the-hub disk drive spin motor

1991-08-05

1992-10-20

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 67R, 310156, H02K 516, H02K 708, H02K 714, H02K 2112

Patent

active

051572958

ABSTRACT:
An under-the-hub spin motor for a disk drive includes a shaft having a first portion mounted to a support member an a second portion shaft having first and second bearings provided at the first and second ends thereof. A hub is supported by the first and second bearings and a disk having an inner diameter is mounted on the hub. A stator is provided on the support member so that the stator is outside of the Z-axis region between the bearings and a rotor is provided on the hub so that the rotor is concentric with the stator and so that a gap is defined between the stator and the rotor. The gap has a radius larger than the inner diameter of the disk.

REFERENCES:
patent: 4285016 (1981-08-01), Gilovich
patent: 4519010 (1985-05-01), Elsasser et al.
patent: 4599664 (1986-07-01), Schuh
patent: 4604665 (1986-08-01), Muller et al.
patent: 4647803 (1987-03-01), von der Heide et al.
patent: 4656545 (1987-04-01), Kakuta
patent: 4658312 (1987-04-01), Elsasser et al.
patent: 4713704 (1987-12-01), Voll et al.
patent: 4739203 (1988-04-01), Miyao et al.
patent: 4739425 (1988-04-01), Dierkes et al.
patent: 4743995 (1988-05-01), Castle et al.
patent: 4760298 (1988-07-01), Kitahara et al.
patent: 4763053 (1988-08-01), Rabe
patent: 4949000 (1990-08-01), Petersen

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