US 11,655,847 B2
Air foil journal bearing
Dong Jun Lee, Gyeonggi-do (KR)
Assigned to Hyundai Wia Corporation, Gyeongsangnam-do (KR)
Filed by Hyundai Wia Corporation, Gyeongsangnam-do (KR)
Filed on Nov. 30, 2021, as Appl. No. 17/538,527.
Claims priority of application No. 10-2020-0186331 (KR), filed on Dec. 29, 2020.
Prior Publication US 2022/0205477 A1, Jun. 30, 2022
Int. Cl. F16C 17/02 (2006.01)
CPC F16C 17/024 (2013.01) 9 Claims
OG exemplary drawing
 
1. An air foil journal bearing, comprising:
a bearing housing having a hollow part into which a shaft is inserted, wherein a first stopping groove is formed at an inner circumferential surface of the hollow part and a second stopping groove is formed at the inner circumferential surface of the hollow part along at least a part of the circumference of the hollow part;
a top foil provided in the hollow part and configured to have a shape covering the shaft, wherein a first stopper is formed on an outer circumferential surface of the top foil such that the first stopper is fitted into the first stopping groove, and a second stopper is formed on the outer circumferential surface of the top foil along at least a part of an entire circumference of the top foil such that the second stopper is fitted into the second stopping groove; and
a buffer member provided between the hollow part and the top foil and elastically supporting the top foil,
wherein the first stopper connects with the second stopper along a circumferential direction of the top foil and is formed by protruding more than the second stopper in an outward radial direction of the top foil, and
wherein the first stopping groove connects with the second stopping groove along a circumferential direction of the hollow part and is formed by being recessed more than the second stopping groove in an outward radial direction of the hollow part.