| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotary electric machine capable of efficiently cooling a permanent magnet while properly securing strength of a rotor core. <P>SOLUTION: A rotor core 3 comprises a plurality of magnetic resistance holes 22a formed corresponding to a plurality of magnetic poles respectively, and radial communication paths 30 extending in a radial direction R to communicate each of the plural magnetic resistance holes 22a with a shaft insertion hole 20. Specific magnetic plates 51, 52 among plural magnetic plates 50 constituting the rotor core 3 have through holes 40a formed in the radial direction R between the shaft insertion hole 20 and the magnetic resistance holes 22a and penetrating in an axial direction L. The radial communication path 30 is constituted by a communication through hole group 31 in which plural through holes 40a formed so that radial positions of at least two specific magnetic plates 51, 52 are different from each other and one part of each of them is overlapped with each other when seen in the axial direction, are sequentially communicated from the shaft insertion hole 20 to the magnetic resistance holes 22a in the radial direction R. <P>COPYRIGHT: (C)2013,JPO&INPIT |
