Motor assembly and method of manufacturing the same
AssigneeSamsung Electronics Co., Ltd.
InventorsMinsung KIM, Kwanwoo HONG, Jeonghoon KANG, Sung HAN
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Abstract
A method of manufacturing a motor assembly comprising a motor and an impeller coupled to a rotation shaft of the motor, the method includes disposing a plurality of balls in a ring-shaped groove formed in a surface of the impeller; rotating the impeller at a speed greater than a resonant rotation speed to move the balls to a compensation position for compensating for an eccentricity in the motor assembly; and fixing the balls at the compensation position in the groove.
Claims20
A method of manufacturing a motor assembly comprising a motor and an impeller coupled to a rotation shaft of the motor, the method comprising:
- disposing a plurality of balls in a ring-shaped groove formed in a surface of the impeller;
- rotating the impeller at a speed greater than a resonant rotation speed to move the balls to a compensation position for compensating for an eccentricity in the motor assembly;
- and
- fixing the balls at the compensation position in the groove.
A motor assembly comprising:
- a motor;
- and
- an impeller coupled to a rotation shaft of the motor,
- wherein the impeller comprises:
- a body comprising a blade, and a ring-shaped groove formed in a surface of the body;
- a cover member configured to cover the groove;
- a plurality of balls disposed inside the groove;
- and
- a fixing member configured to fix the balls inside the groove.
A vacuum cleaner comprising a motor assembly, wherein:
- the motor assembly comprises a motor and an impeller coupled to a rotation shaft of the motor, and
- the impeller comprises:
- a body including a ring-shaped groove formed in a surface of the body;
- a cover member configured to cover the groove;
- a plurality of balls disposed inside the groove;
- and
- a fixing member configured to fix the balls inside the groove.
Dependencies are inferred from the claim text.