Patent ID: 9083226
Filing Date: 2015-07-14
Classification: H02K

Abstract:
1. A brushless motor comprising: a stator comprising: a rotor rotatably mounted to the stator, comprising: wherein each radially elongated hole is located on a radial line midway between adjacent two of the plurality of magnets, and is spaced from a corresponding rib shaped connecting portion and the additional holes in a radial direction of the rotor core; wherein each one of the plurality of rib shaped connecting portions of the rotor core is radially aligned with a respective one of the plurality of radially elongated holes; wherein each one of the plurality of magnets is plate shaped, extending in both axial and radial directions of the rotor core, and magnetically charged across its thickness so that a rotor pole is formed between adjacent two of the plurality of magnets; wherein a width of the plurality of rib shaped connecting portions of the rotor core is less than the smallest distance from a side wall of one of the plurality of radially elongated holes to an adjacent one of the plurality of magnets.