Low cogging and easy-to-downsize spindle motor structure

Details Low cogging and easy-to-downsize spindle motor structure Low cogging and easy-to-downsize spindle motor structure

2006-09-19

2006-09-19

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S06700R, C310S090000, C360S099080

Reexamination Certificate

active

07109631

ABSTRACT:
The present invention relates to a low cogging and easy-to-downsize spindle motor structure. The motor is an axial magnetic flux spindle motor comprising a stator assembly and a rotor assembly. The stator assembly comprises a deck for seating the rotor assembly and at least one bearing placed on the housing of said stator and between the stator and the rotor. The outer periphery part of the bearings is the stationary part; with the inner part of said bearings being the rotating part. A cylindrical shaft is located in the center of the rotor. When the thin windings of stator are excited with current, a rotating magnetic field is created, forcing said rotor into rotation, and as a consequence, bringing the spindle into rotation that generates motor output needed to drive loads.

REFERENCES:
patent: 4891537 (1990-01-01), Shiraki et al.
patent: 6195226 (2001-02-01), Papst
patent: 6509666 (2003-01-01), Huang et al.
patent: 6605883 (2003-08-01), Isozaki et al.
patent: 6762526 (2004-07-01), Isozaki et al.

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