| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compact rotary electric machine for which reliability is contrived. <P>SOLUTION: In a rotary electric machine comprising a stator 3, and a rotor 5 arranged facing the stator 3 and rotating about a shaft 6, wherein the rotor 5 has a core 5a; a plurality of conductor bars 7a inserted, respectively, into a plurality of holes formed in the axial direction of the core 5a, and end rings 7b and 7b provided at the ends of these conductor bars 7a; outer circumferential part of the end rings 7b and 7b and the conductor bars 7a are bonded electrically and mechanically through friction stir welding and one end of the conductor bar 7a is projected farther than the end ring 7b or 7c in the axial direction. With such an arrangement, degree of freedom is improved in the peripheral profile of the stator 3 or the rotor 5 while enhancing heat dissipation properties, and a high-reliability compact rotary electric machine can be provided. <P>COPYRIGHT: (C)2008,JPO&INPIT |
