| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor for a rotary electric machine which is capable of preventing a magnet from being damaged by thermal deformation and facilitates positioning work of the magnet and a shaft during production.SOLUTION: A rotor 10 for the rotary electric machine comprises a shaft 20 including a rotation axis center P and a cylindrical magnet 11 which is fixed on an outer peripheral surface 21 of the shaft 20, and the magnet 11 presents magnetic pole parts 1A and 1B of which the polarities are different from each other, in a circumferential direction around the rotation axis center P. In each of the magnetic pole parts 1A and 1B, a pair of end portions and a central portion that is positioned between the pair of end portions are defined. A gap between the outer peripheral surface 21 of the shaft 20 and an inner peripheral surface 12 of the magnet 11 is set larger than the central portions of the magnetic pole parts 1A and 1B in the end portions of the magnetic pole parts 1A and 1B. At positions of the central portions of the magnetic pole parts 1A and 1B, the shaft 20 and the magnet 11 are fixed with each other by interference-fit or adhesion.SELECTED DRAWING: Figure 1 |
