| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor shaft capable of improving a fastening force in a circumferential direction between the center and peripheral part of the shaft. SOLUTION: A rotor shaft 3 is used for a rotor of a motor and is divided into a shaft center 4 and a shaft peripheral part 5 that is arranged on the outer periphery of the shaft center 4. The shaft peripheral part 5 is formed integrally with a tube-like part 51 into which the shaft center 4 is inserted, and a magnetic body fitting part 53 which is arranged on the outer periphery side of the tube-like part 51 and fitted with a magnetic body for forming a magnetic circuit. In the tube-like part 51 on the shaft outer peripheral part 5, a caulking part 511 formed at the end in axial direction is caulked and deformed inside a caulking recess 41 formed partially on the outer periphery of the shaft center 4, and fixed to the shaft center 4. COPYRIGHT: (C)2007,JPO&INPIT
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