Fluid dynamic bearing motor
AssigneeG & W Technologies, Inc.
InventorSang Uk Kim
Life of this patent
Estimating the term…
Abstract
Provided is a fluid dynamic bearing motor in which a rotor is rotatably supported by forming an oil gap between the rotor and a stator to form a fluid dynamic pressure bearing and a plurality of oil grooves are formed in a surface of the rotor or stator forming the oil gap and facing each other. The oil grooves include a first oil groove inclined at a first angle with respect to a circumferential direction, and a second oil groove extending from an end portion of the first oil groove and inclined at a second angle with respect to the circumferential direction. The first angle is formed relatively greater than the second angle.
Claims9
A fluid dynamic bearing motor in which a rotor is rotatably supported by forming an oil gap between the rotor and a stator to form a fluid dynamic pressure bearing and a plurality of oil grooves are formed in a surface of the rotor or stator forming the oil gap and facing each other, wherein the oil grooves comprise:
- a first oil groove inclined at a first angle with respect to a circumferential direction;
- and
- a second oil groove extending from an end portion of the first oil groove and inclined at a second angle with respect to the circumferential direction, wherein the first angle is formed relatively greater than the second angle.
A fluid dynamic bearing motor comprising:
- a housing;
- a sleeve positioned within the housing and having a shaft hole;
- a rotor coupled to the shaft hole and rotatably supported within, the shaft and rotor configured to include a gap therebetween;
- a plurality of oil grooves configured to face the gap and including a first oil groove at a first angle with respect to a circumferential direction and a second oil groove extending from an end portion of the first oil groove and oriented at a second angle with respect to the circumferential direction, wherein the first angle is formed relatively greater than the second angle, the second oil groove including an inlet side oriented at a predetermined angle with respect to the circumferential direction.
A fluid dynamic bearing motor comprising:
- a housing;
- a sleeve positioned within the housing and having a shaft hole;
- a rotor coupled to the shaft hole and rotatably supported within, the shaft and rotor configured to include a gap therebetween;
- a plurality of oil grooves configured to face the gap and including a first oil groove at a first angle with respect to a circumferential direction and a second oil groove extending from an end portion of the first oil groove and oriented at a second angle with respect to the circumferential direction, wherein the first angle is formed relatively greater than the second angle, the second oil groove including an inlet side oriented at a angle between 45° and 180° with respect to the circumferential direction.
Dependencies are inferred from the claim text.