Rotor core with magnets on the outer periphery of the core having a sine or trapezoidal wave

摘要

A rotor for a motor includes a body formed by multiple silicon steel sheets securely abutting one another. Each silicon steel sheet has a series of apertures defined in an outer periphery thereof to define multiple grooves in an outer periphery of the body for receiving a magnetic element. At least one raised portion radially extends from a bottom of each of the aperture to abut a bottom of the magnetic element to form a magnetic field when the rotor is rotated relative to a stator of the motor.