Patent ID: 11139705

Abstract:
An electric motor includes: a stator; and a rotor, in which the rotor includes: a rotor core having magnet insertion holes; and magnets in the magnet insertion holes. Further, the rotor core includes: a rotor core main body; rotor core outer peripheral portions positioned outward in the rotor radial direction with respect to the magnets and forming parts of inner surfaces of the magnet insertion holes outward in the rotor radial direction; and bridges, forming the respective magnet insertion holes by connecting the rotor core main body and the rotor core outer peripheral portions, the bridges being formed to be thinner than thickest portions of the rotor core outer peripheral portions, and the magnets are shaped to be a cross-section polyhedron having oblique sides which narrow as the oblique sides go from the inward toward the outward in the rotor radial direction.