Automotive alternator having cooling fan coupled to rotor shaft
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United States of America Patent
Stats
-
Jun 6, 2006
Grant Date -
Dec 29, 2005
app pub date -
May 26, 2005
filing date -
Jun 28, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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