| 简介 |
PROBLEM TO BE SOLVED : To provide an outer rotor for an inclusive magnet type synchronous machine capable of efficiently molding a rare earth anisotropic bond magnet under a magnetic field while avoiding expansion of an oriented metal mold.
SOLUTION : An outer yoke relating to an outer rotor (R) is formed from a block ring body in which a non-closed-ring-shaped yoke block (L1) is disposed in a closed-ring shape. A permanent magnet (m) included in the outer yoke is formed from a rare earth anisotropic bond magnet which is injection-molded into an inclusive part while applying an oriented magnetic field for the unit of a single yoke block or for the unit of multiple yoke blocks. The rare earth anisotropic bond magnet is not directly molded under the magnetic field in the inclusive part of the closed-ring-shaped outer yoke but the rare earth anisotropic bond magnet is molded under the magnetic field in the non-closed-ring-shaped yoke block forming the outer yoke and the yoke blocks are then arrayed in a ring shape, thereby forming the outer rotor.
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