ROTOR INCLUDING PERMANENT MAGNETS HAVING DIFFERENT THICKNESSES AND MOTOR INCLUDING SAME

摘要

The present invention relates to a rotor including permanent magnets having different thicknesses and to a motor including same. In the rotor, the permanent magnets having different thicknesses at both ends thereof are inserted into the iron core of the rotor to solve the imbalance of gap flux density. According to the present invention, the motor includes a rotor and a stator having a rotor insertion hole in which the rotor is inserted in the center thereof, wherein a coil is wound around the inner circumferential surface of the rotor insertion hole. Here, the rotor includes a rotor iron core and a plurality of permanent magnets. The rotor iron core has a rotating shaft insertion hole in which a rotating shaft is inserted in the center thereof, and a plurality of permanent magnet insertion holes are defined in the circumference of the rotating shaft insertion hole. The plurality of permanent magnets are respectively inserted into the plurality of permanent magnet insertion holes to form a N pole and a S pole. Here, each of the plurality of permanent magnets has different thicknesses according to the distance from the center of a magnetic pole, wherein a relatively thick portion is disposed on the center of the magnetic pole, and a relatively thin portion is disposed on the edge of the magnetic pole.