| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a permanent magnet rotor, capable of preventing breakage to a permanent magnet or a permanent magnet cover and scattering of the permanent magnet even under an environment where thermal expansion or thermal shrinkage is repeated according to temperature changes, by increasing an assembling tolerance in fitting the permanent magnet cover onto and avoiding generation of any excessive force on the components of the rotor. <P>SOLUTION: A permanent magnet cover 5 is formed in an annular shape of which the inside diameter before being assembled in an outer periphery of a permanent magnet 4 is smaller than the outside diameter of the permanent magnet 4, and one or more expansion portions 5a are formed in the peripheral direction. <P>COPYRIGHT: (C)2012,JPO&INPIT |
