Rotor of a motor

摘要

Provided is a rotor core of a motor, the rotor core, the rotor core including: a thin disk-shaped rotor core member; a shaft hole penetratively formed in a center of the rotor core member; a shaft press-fitted into the shaft hole; a plurality of magnet insertion holes penetratively formed at a position near to a periphery of the rotor core member for inserted coupling by a magnet; a plurality of teeth protrusively formed at an inner circumferential surface of the shaft hole, and a skived portion protrusively formed at a position corresponding to the plurality of teeth of the shaft, wherein the rotor core members are stacked each at a predetermined height, and the shaft is press-fitted into the shaft hole.

主权项

1. A rotor of a motor, the rotor comprising:
a rotor core member including a shaft hole; and a shaft press-fitted into the shaft hole, the shaft comprising a skived portion on a surface thereof; wherein the rotor core member comprises: a plurality of rotor core plates, each including the shaft hole in a center thereof and stacked at a predetermined height; a plurality of magnet insertion holes formed at a position near to a periphery of a rotor core plate of the plurality of rotor core plates; a plurality of magnets arranged in the plurality of magnet insertion holes; and a plurality of first teeth protrusively formed at an inner circumferential surface of the shaft hole, wherein the skived portion is arranged at a position corresponding to the plurality of first teeth of the shaft hole, wherein an outer circumferential surface of the shaft is in contact with the plurality of first teeth, and wherein a gap is present between the outer circumferential surface of the shaft and the inner circumferential surface of the shaft hole where the plurality of first teeth is not formed.