US 12,222,015 B2
Hydro bushing
Yong Hyun Ryu, Seoul (KR); Chan Hee Park, Anyang-si (KR); Young Ho Kim, Gunpo-si (KR); Dae Un Sung, Incheon (KR); Gi Bong Jo, Seoul (KR); Jae Hyeok Choi, Daegu (KR); Young Bin Ju, Daegu (KR); and Ho Sung Lee, Daegu (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and PYUNG HWA INDUSTRIAL CO., LTD., Daegu (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and PYUNG HWA INDUSTRIAL CO., LTD., Daegu (KR)
Filed on Oct. 25, 2022, as Appl. No. 17/973,053.
Claims priority of application No. 10-2022-0047991 (KR), filed on Apr. 19, 2022.
Prior Publication US 2023/0332667 A1, Oct. 19, 2023
Int. Cl. F16F 13/14 (2006.01); F16F 15/023 (2006.01)
CPC F16F 15/023 (2013.01) [F16F 13/1463 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A hydro bushing comprising:
an outer pipe;
an inner pipe disposed within the outer pipe and spaced apart from the outer pipe;
an elastic body disposed between the outer pipe and the inner pipe and provided with a liquid chamber portion accommodating liquid therein; and
a nozzle disposed between the outer pipe and the elastic body and including a stopper extending toward the liquid chamber portion such that a portion of an internal surface of the nozzle protrudes to be in contact with the liquid chamber portion,
wherein a surface of a contact end of the stopper has a circumferential shape formed in a circumferential direction of the inner pipe, and
the circumferential shape has the same circumferential curvature as an outer radius of the inner pipe,
a gap in a load direction is present between the nozzle and the elastic body, and
the circumferential shape of the surface of the contact end is formed based on a movement of a virtual circle by the gap with respect to a center point of the inner pipe, a radius of the virtual circle corresponds to an outer radius of the inner pipe.