| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology capable of suppressing deformation of a rotor core and displacement of magnets caused by centrifugal force in a motor in which the magnets and magnetic pole sections of the rotor core are alternately aligned in the circumferential direction.SOLUTION: A rotor core 51A comprises a laminated steel plate formed by axially laminating a plurality of core plates 511 A which are magnetic materials expanding in the direction orthogonal to a central axis 9A extending vertically. The rotor core 51A includes a plurality of magnetic pole sections 61A aligned in the circumferential direction. At least part of the core plates 511A includes: claw sections 62A projecting from the magnetic pole sections 61A in the circumferential direction; and outer connection sections 63A each interconnecting the magnetic pole sections 61A adjacent to each other on the radial outer side of the claw sections 62A. The claw section 62A suppresses displacement of the magnet 52A to the radial outer side due to centrifugal force. The outer connection section 63A suppresses deformation of the rotor core 51A due to centrifugal force. Since the outer connection section 63A suppresses deformation of the claw section 62A itself caused by centrifugal force, the displacement of the magnet is further suppressed. |
