| 摘要 |
A vehicle AC generator comprise a frame, stator, rotor, rectifier, protective cover, and cooling fan. The rectifier includes plural rectifying elements consisting of positive and negative rectifying elements and is secured on an outer end portion of the frame. The rectifier comprises larger-diameter and smaller-diameter fins. The negative rectifying elements are mounted on the larger-diameter fin. The positive rectifying elements are mounted on the smaller-diameter fin. The protective cover comprises an axial opening facing the smaller-diameter fin. The frame comprises a radial opening formed with the aid of a radially outer end of the frame, a radial air passage formed with facing the larger-diameter fin, and plural grooves. Each groove positionally corresponds to a mounted position of each rectifying element on the larger-diameter fin and is formed on the radial air passage to connect a radially outer end and a radially inner end of the frame.
|
