| 摘要 |
This invention relates to an alternator rotor and its manufacturing method, said rotor having a first rotor member (1) on which a plurality of teeth (11) have been formed, plus a second rotor member (2) arranged so that its teeth are positioned in the spaces in the cylindrical surface formed by the teeth of said first rotor member. A cylindrically-shaped magnetic material (20) is cut to match the shape of the teeth (11) and is separated into a first rotor member (1) and a second rotor member (2). A plurality of teeth (11) is formed on the first rotor member (1), and teeth are formed on the second rotor member (2) so that they are positioned in the spaces in the cylindrical surface formed by the teeth of the first rotor member. The two rotor members (1,2) are mechanically joined by laying each of two rings (8,9) across the tips of the teeth (11) of one rotor member and across the bases of the teeth of the other rotor member. Given this construction and method of manufacture, rotors can be manufactured in fewer manhours, electrical efficiency can be improved by increasing the number of poles, and the incidence of defective products is decreased, which means that manufacturing yield can be increased. In addition, because the fabrication of the teeth (11) can be automated and the welding can be performed easily from the outside, fabrication precision can be increased and quality stabilized. <IMAGE> |
