| 摘要 |
PROBLEM TO BE SOLVED: To obtain a DC brushless motor embedded with permanent magnets at the magnet inserting part of a rotor core in which even a magnet having low dimensional accuracy can be held in the inserting part without forming any gap between the magnet and the circumferential wall face at the inserting part while protecting the magnet against chipping or scratching. SOLUTION: A magnet 45 is secured firmly to a rotor core 44 by shifting at least one of a large number of magnetic plates 61a, 61c, laminated along the axial direction of rotary shaft of the rotor core 44, relatively to other magnetic plate 61c in the circumferential direction. |
