ELECTROMECHANICAL DEVICE, ROTOR USED FOR ELECTROMECHANICAL DEVICE, AND MOBILE UNIT AND ROBOT WITH ELECTROMECHANICAL DEVICE

摘要

An electromechanical device has a rotor and a stator provided on an outer circumference of the rotor. The rotor includes a rotation shaft, a plurality of rotor magnets cylindrically fixed and arranged along an outer circumference of the rotation shaft, and two magnet side yokes fixed and arranged in contact with side surfaces at both sides of the rotor magnets in a shaft direction of the rotation shaft. Overhang parts that suppress the rotor magnets with respect to radiation directions from a center of the rotation shaft toward the outer circumference and limit movements of the rotor magnets in the radiation directions are provided on surfaces of the magnet side yokes in contact with the rotor magnets.