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US 11,146,159 B2Granted
Brushless motor
AssigneeTti (Macao Commercial Offshore) Limited
InventorsHei Man Raymond Lee, Nan Wang, Zheng Li, Li Feng Wang
Life of this patent
Estimating the term…
Abstract
A brushless motor includes a stator (26) having six slots (30), and a rotor having two poles. The rotor is adapted to rotate with respect to the stator. By adopting a 6-slots-2-poles structure, the brushless motor effectively reduces operational noise due to iron loss and unbalanced pull. As a result, the working life of the motor can be improved.
Claims10
A brushless motor, comprising:
- a) a stator having six slots formed equidistantly around a perimeter of the stator, the six slots corresponding to respective angular positions of six teeth formed at an interior of the stator;
- b) a rotor comprising a motor shaft which defines an axis of rotation of the rotor, the rotor having two poles;
- wherein the rotor is adapted to rotate with respect to the stator;
- wherein the rotor is supported by a single bearing device which is closer to one end of the motor shaft than to the other end along a longitudinal direction of the motor shaft;
- wherein adjacent to said other end of the motor shaft there are arranged magnets on the motor shaft;
- wherein there are two or more said magnets arranged along the longitudinal direction which are separated by an isolating ring;
- and
- wherein a balancing ring is mounted on the motor shaft between the magnets and the bearing device.
5 more elements
A brushless motor, comprising:
- a stator;
- a rotor adapted to rotate with respect to the stator;
- the rotor comprising a motor shaft which defines an axis of rotation of the rotor;
- wherein the rotor is supported by a single bearing device which is closer to one end of the motor shaft than to the other end along a longitudinal direction of the motor shaft;
- wherein adjacent to said other end of the motor shaft there are arranged magnets on the motor shaft;
- wherein there are two or more said magnets arranged along the longitudinal direction which are separated by an isolating ring;
- and
- wherein a balancing ring is mounted on the shaft between the magnets and the bearing device.
5 more elements
Dependencies are inferred from the claim text.