CPC H02K 1/30 (2013.01) [H02K 1/276 (2013.01)] | 20 Claims |
1. A motor rotor apparatus comprising:
a rotor core comprising:
a first air sub-groove, wherein the first air sub-groove comprises:
a first slot; and
a first tooth is adjacent to the first slot to form a T-shaped sawtooth;
a second air sub-groove coupled to the first air sub-groove to form a first air groove, and configured to accommodate a first permanent magnet;
a second air groove configured to accommodate a second permanent magnet, wherein a first magnetic bridge is formed between the first air groove and the second air groove;
a third air sub-groove symmetrically distributed with the first air sub-groove, wherein a second magnetic bridge is formed between a circumferential surface of the rotor core and the third air sub-groove; and
a fourth air sub-groove coupled to the third air sub-groove to form a third air groove and configured to accommodate a third permanent magnet, wherein the third air groove is symmetrically distributed with the first air groove, and wherein a third magnetic bridge is formed between the second air sub-groove and the fourth air sub-groove;
a first bonding element embedded in the first air sub-groove and comprising:
a second slot engaged with the first slot; and
a second tooth engaged with the first tooth and placed adjacent to the second slot to form the T-shaped sawtooth; and
a second bonding element embedded in the third air sub-groove.
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