| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an embedded magnet type motor in which the number of components can be decreased and leakage flux can be reduced while attaining high torque by using many magnets, and cogging torque and torque ripple can also be reduced. <P>SOLUTION: Containing hole of a rotor core having the number of poles P consists of P/2 of radial containing holes 8a extending in the substantially radial direction, and P/2 of substantially V-shaped containing holes 8b (a pair of magnet containing sections 8f) which becomes convex on the radially outside. One magnetic pole is constituted of a magnet 9 in the radial containing hole and a magnet 10 in the magnet containing section contiguous in one circumferential direction, and one different magnetic pole is constituted of a magnet 9 in the radial containing hole and a magnet 10 in the magnet containing section contiguous in the other circumferential direction. At the radial outside ends of the radial containing hole and the V-shaped containing hole, unequal portions 8c and 8h where the distance from each circumferential center in their other portions is set to differ in one and the other circumferential direction are formed partially in the axial direction. <P>COPYRIGHT: (C)2007,JPO&INPIT |
