| 摘要 |
PROBLEM TO BE SOLVED: To provide an arrangement structure for a permanent magnet suitable for a rotor core having a circular ringlike cross-section that is thin and has a large opening in the center for housing a mechanism for coupling with a known driving system that is a motor of a hybrid automobile, and a structure for reducing the amount of magnets. SOLUTION: A single-pole platelike permanent magnet is divided into a center magnet 1 in the center and side magnets 2 and 3 on either side. The side magnets 2 and 3 have a smaller pole surface width than the center magnet 1. The center magnet 1 and the side magnets 2 and 3 are embedded in parallel with a tangential line of a rotor core 10. The thickness between both poles of the center magnet is thinner than those of the side magnets 2 and 3. The volume of the pole front-side core 10a is increased. Respective pole surfaces 2a of the right and left side magnets 2 are placed such as to be tilted inwards towards the center magnet 1 in the center. COPYRIGHT: (C)2010,JPO&INPIT |
