Motor rotor and electric power steering apparatus

Details Motor rotor and electric power steering apparatus Motor rotor and electric power steering apparatus

2009-04-23

2011-10-18

Mullins, Burton (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156080, C310S156280, C310S156190

Reexamination Certificate

active

08040006

ABSTRACT:
A motor rotor has a rotor yoke having a polygonal column structure, a plurality of magnet fixing sections formed on the lateral surface of the rotor yoke, segment magnets respectively fixed to the magnet fixing sections and extending in the axial direction of the rotor yoke, and projections provided on the rotor yoke and protruding outward from the rotor yoke, the projections being provided at each boundary section located between each of the adjacent magnet fixing sections and being provided in pairs in the axial direction of the rotor yoke.

REFERENCES:
patent: 4742259 (1988-05-01), Schaefer et al.
patent: 4954736 (1990-09-01), Kawamoto et al.
patent: 5063318 (1991-11-01), Anderson
patent: 5760520 (1998-06-01), Hasebe et al.
patent: 7545067 (2009-06-01), Drexlmaier
patent: 2004/0140725 (2004-07-01), Takahashi
patent: 2009/0102304 (2009-04-01), Yamamura et al.
patent: 2009/0261677 (2009-10-01), Ishikawa et al.
patent: 6-38417 (1994-02-01), None
patent: 2006-271057 (2006-10-01), None

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