A rotor assembly
AssigneeDyson Technology Limited
InventorsAlexander John ASBRIDGE, Thomas Edward HALHEAD, Harry Alexander MORLEY
Life of this patent
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Abstract
A rotor assembly for a brushless permanent magnet motor includes a shaft having a first portion having a first diameter, a second portion having a second diameter, and a third portion having a third diameter. The rotor assembly includes a first bearing assembly mounted to the first portion of the shaft, a permanent magnet mounted to the second portion of the shaft, and a second bearing assembly mounted to the third portion of the shaft. The second portion is located intermediate the first portion and the third portion, the second diameter is less than the first diameter, and the third diameter is less than the first and second diameters.
Claims21
A rotor assembly for a brushless permanent magnet motor, the rotor assembly comprising:
- a shaft comprising a first portion having a first diameter, a second portion having a second diameter, and a third portion having a third diameter;
- a first bearing assembly mounted to the first portion of the shaft;
- a permanent magnet mounted to the second portion of the shaft;
- and
- a second bearing assembly mounted to the third portion of the shaft,
- wherein the second portion is located intermediate the first portion and the third portion, the second diameter is less than the first diameter, and the third diameter is less than the first and second diameters.
Dependencies are inferred from the claim text.