Motor rotor apparatus and motor
A motor rotor apparatus includes a rotor core and a bonding element embedded in the rotor core. The rotor core includes a first air sub-groove, and the first air sub-groove includes a first tooth and a first slot. The bonding element includes a second tooth and a second slot. The first tooth is engaged with the second tooth, and the first slot is engaged with the second slot.
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.
2. The motor rotor apparatus of claim 1 , wherein the second air sub-groove is coupled to the first air sub-groove in a head-to-tail manner.
3. The motor rotor apparatus of claim 1 , wherein the rotor core further comprises a plurality of first bearing structures, and wherein each of the first bearing structures comprises the first air groove and the second air groove.
4. The motor rotor apparatus of claim 1 , wherein a fourth magnetic bridge is formed between the first air groove and a circumferential surface of the rotor core, and wherein a fifth magnetic bridge is formed between the second air groove and the circumferential surface of the rotor core.
5. The motor rotor apparatus of claim 1 , wherein the first air sub-groove further comprises a plurality of first teeth and a plurality of first slots that are alternately distributed.
6. The motor rotor apparatus of claim 1 , wherein the first bonding element further comprises a plurality of second teeth and a plurality of second slots that are alternately distributed.
7. The motor rotor apparatus of claim 1 , wherein the first tooth and the first slot are rectangular in shape.
8. The motor rotor apparatus of claim 1 , wherein the first tooth and the first slot are triangular in shape.
9. The motor rotor apparatus of claim 1 , wherein the first bonding element is a non-magnetic, high-hardness material.
10. A motor comprising:
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 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.
11. The motor of claim 10 , wherein the second air sub-groove is coupled to the first air sub-groove in a head to tail manner.
12. The motor of claim 10 , wherein the rotor core further comprises a plurality of first bearing structures, and wherein each of the first bearing structures comprises the first air groove and the second air groove.
13. The motor of claim 10 , wherein a fourth magnetic bridge is formed between the first air groove and a circumferential surface of the rotor core, and wherein a fifth magnetic bridge is formed between the second air groove and the circumferential surface of the rotor core.
14. The motor of claim 10 , wherein the first air sub-groove further comprises a plurality of first teeth and a plurality of first slots that are alternately distributed.
15. The motor of claim 10 , wherein the first bonding element further comprises a plurality of second teeth and a plurality of second slots that are alternately distributed.
16. The motor of claim 10 , wherein the first tooth and the first slot are rectangular in shape.
17. The motor of claim 10 , wherein the first tooth and the first slot are triangular in shape.
18. The motor of claim 10 , wherein the first bonding element is a non-magnetic high-hardness material.
19. The motor of claim 18 , wherein the non-magnetic high-hardness material comprises an aluminum material or a ceramic material.
20. The motor of claim 10 , wherein the first bonding element is engaged with the first air sub-groove in the rotor core to form a bearing structure.