Patent ID: 11936245
Assignee: LG INNOTEK CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A motor comprising:
a shaft;
a rotor coupled to the shaft; and
a stator disposed outside the rotor,
wherein
the rotor includes a number (N) of rotor cores, and a plurality of magnets disposed on an outer circumferential surface of each of the rotor cores,
at least 2N holes are formed in one of the N rotor cores,
the at least 2N holes include a first group of at least N holes to arrange the rotor cores and a second group of least N holes to balance rotation of the rotor cores, and
first angles (θ1) formed between adjacent pairs of the at least N holes of the first group are the same.