| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve strength of a rotor core with respect to centrifugal force without increasing flux leakage. <P>SOLUTION: A permanent magnet rotor (10) includes a rotor core (11) formed by overlapping a plurality of magnetic plates (15 and 16) in an axial direction of a drive shaft (1). The magnetic plates (15 and 16) respectively have a bridge (20) formed thereon which is disposed so as to cross a magnet opening (18) formed in a peripheral part of the drive shaft (1). The permanent magnet rotor (10) is disposed opposite to a stator with an air gap interposed therebetween. Two magnetic plates (15 and 16) adjacent to each other in a lamination direction among the plurality of magnetic plates (15 and 16) form a pair of magnetic plates (23). The pair of magnetic plates (23) are formed so that the two magnetic plates (15 and 16) are fixed to each other, and their respective bridges (20) are not overlapped with each other. <P>COPYRIGHT: (C)2013,JPO&INPIT |
