Automotive alternator having cooling fan coupled to rotor shaft

Details Automotive alternator having cooling fan coupled to rotor shaft Automotive alternator having cooling fan coupled to rotor shaft

2006-06-06

2006-06-06

Mullins, Burton (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S058000, C310S06000A, C310S232000, C310S263000

Reexamination Certificate

active

07057315

ABSTRACT:
An alternator for use in an automobile includes a stator supported between a front housing and a rear housing, and a rotor connected to a rotor shaft and rotatably supported inside the stator. A cooling fan is positioned at an end of a pole core of the rotor. The cooling fan is coupled to the rotor shaft by engaging edges of a center opening of the cooling fan with a non-circular flange formed on the rotor shaft. The cooling fan is correctly positioned relative to the rotor shaft, without using a jig, both in the radial direction and in the rotational direction of cooling fan. Noises and vibrations due to rotational imbalance of the cooling fan are suppressed.

REFERENCES:
patent: 5325003 (1994-06-01), Saval et al.
patent: 5459364 (1995-10-01), Rondier
patent: 5625244 (1997-04-01), Bradfield
patent: 6586853 (2003-07-01), Ishida et al.
patent: 6707181 (2004-03-01), Militello et al.
patent: 6812602 (2004-11-01), York
patent: Y2-05-008781 (1993-03-01), None
patent: B2-3497896 (2003-11-01), None

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