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US 11,346,351 B2Granted
Bearing comprising an inner ring either in contact with a rotating shaft or forming a gap between the inner ring and rotating shaft depending on air pressure from an impeller
AssigneeLG Electronics Inc.
InventorsChanglae Kim, Sunggi Kim, Byungjik Kim, Taeho Kim
Life of this patent
Estimating the term…
Abstract
A motor includes a bearing having a rolling member disposed between an inner ring and an outer ring, a spring connected to the outer ring, and a pusher connected to the spring and configured to move to a first position spaced apart from the inner ring by the spring. The pusher is further configured to move to a second position at which friction with the inner ring is caused by a pressure of air. The inner ring is spaced apart from the rotating shaft by a gap between the inner ring and the rotating shaft when the pusher is at the second position.
Claims20
A motor comprising:
- a rotating shaft;
- a rotor connected to the rotating shaft;
- an impeller connected to the rotating shaft;
- a bearing comprising an inner ring, an outer ring, and a rolling member disposed between the inner ring and the outer ring, an inner diameter of the inner ring being greater than an outer diameter of the rotating shaft;
- a bearing housing that defines a bearing receiving portion configured to support the bearing;
- and
- a pusher disposed within the bearing receiving portion and configured to move between a first position spaced apart from the inner ring and a second position contacting the inner ring,
- wherein the inner ring is configured to, based on the pusher being at the second position, become detached from the rotating shaft to thereby define a gap between the inner ring and the rotating shaft.
5 more elements
A motor comprising:
- a rotating shaft;
- a rotor connected to the rotating shaft;
- an impeller connected to the rotating shaft;
- a bearing comprising an inner ring, an outer ring, and a rolling member disposed between the inner ring and the outer ring, an inner diameter of the inner ring being larger than an outer diameter of the rotating shaft;
- a spring connected to the outer ring;
- and
- a pusher connected to the spring, the pusher being configured to:
- based on force applied by the spring, move away from the inner ring to a first position spaced apart from the inner ring, and
- based on an air pressure applied to a pressure surface of the pusher by air blown by the impeller, move to a second position located closer to the inner ring than the first position,
- wherein the inner ring is configured to:
- based on the pusher being at the first position, rotate with the rotating shaft by friction with the rotating shaft, and
- based on the pusher being at the second position, become detached from the rotating shaft to thereby define a gap between the inner ring and the rotating shaft.
9 more elements
Dependencies are inferred from the claim text.