Alternator

Details Alternator Alternator

2007-07-10

2007-07-10

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S064000

Reexamination Certificate

active

11188794

ABSTRACT:
An automotive alternator according to the present invention includes: a shaft having an end portion rotatably supported by a rear bearing housed inside a rear bearing housing portion of a rear bracket; a rectifier for converting an alternating current into a direct current; and a first centrifugal fan for cooling a rotor, a stator, and the rectifier by sucking in external air through a suction inlet in the bracket when the rotor rotates, the rectifier has a positive-side heat sink for cooling a plurality of positive-side diodes, the suction inlet is formed in a vicinity of the rear bearing housing portion, and a plurality of rear bearing cooling fins extending in a direction perpendicular to the shaft are formed on a side of the suction inlet near the rear bearing housing portion.

REFERENCES:
patent: 4418295 (1983-11-01), Shiga
patent: 5729063 (1998-03-01), Adachi et al.
patent: 6198187 (2001-03-01), Asao et al.
patent: 3514207 (1986-10-01), None
patent: 59204446 (1983-05-01), None
patent: 2001-45726 (2001-02-01), None

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