Motor and manufacturing method thereof
Disclosed herein are a motor and a method of manufacturing the motor. The motor includes a rotor, a stator including a plurality of coil bobbin unit groups, and a coil prepared on coil bobbin units by winding a wire sequentially on coil bobbin units of each coil bobbin unit group, cutting the wound wire at a cutting point, connecting one end of the cut wire to a neutral point port, and connecting the other end of the cut wire to a driving point port.
1. A motor comprising:
a rotor;
a stator comprising a plurality of coil bobbin unit groups, wherein the plurality of coil bobbin unit groups comprises three coil bobbin unit groups, and each of the coil bobbin unit groups comprises at least three coil bobbin units;
a bus bar assembly; and
a coil including a wire wound sequentially on coil bobbin units of each coil bobbin unit group, the wound wire being cut at a cutting point to form a parallel pattern, having one end of the cut wire connected to a neutral point port on the bus bar assembly, and having the other end of the cut wire connected to a driving point port on the bus bar assembly,
wherein the wire on the last coil bobbin unit of each coil bobbin unit group is wound in a direction opposite to a winding direction of the other two coil bobbin units, and
wherein the wire is cut at a cutting point adjacent to a first coil bobbin unit of each coil bobbin unit group on which the wire is first wound and a last coil bobbin unit of the coil bobbin unit group on which the wire is last wound,
wherein wires lead out from each of the coil bobbin units by cutting, are grouped in parallel into a U-phase wire group, a V-phase wire group, and a W-phase wire group, and
wherein wires of each wire group are withdrawn from a same position.
2. The motor according to claim 1 , wherein the coil is prepared by winding one wire on a plurality of coil bobbin unit groups and cutting the wire.
3. The motor according to claim 1 , wherein the coil is prepared by winding one wire on one coil bobbin unit group and cutting the wire, and winding another wire on another coil bobbin unit group.
4. The motor according to claim 1 , wherein among the three coil bobbin unit groups, a first coil bobbin unit group comprises a first coil bobbin unit, a fourth coil bobbin unit, and a seventh coil bobbin unit, a second coil bobbin unit group comprises a second coil bobbin unit, a fifth coil bobbin unit, and an eighth coil bobbin unit, and a third coil bobbin unit group comprises a third coil bobbin unit, a sixth coil bobbin unit, and a ninth coil bobbin unit.
5. The motor according to claim 4 , wherein the coil is prepared by sequentially winding the wire on the first coil bobbin unit group, the second coil bobbin unit group, and the third coil bobbin unit group.
6. The motor according to claim 5 , wherein the coil is prepared by sequentially winding the wire on the fourth coil bobbin unit, the seventh coil bobbin unit, the first coil bobbin unit, the second coil bobbin unit, the fifth coil bobbin unit, the eighth coil bobbin unit, the third coil bobbin unit, the sixth coil bobbin unit, and the ninth coil bobbin unit.