US 12,467,512 B2
Bearing bush for vibration isolation between two vehicle components of a motor vehicle
Ameya Karmarkar, Russelsheim am Main (DE); and Christian Ludwig, Zwingenberg (DE)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Nov. 10, 2022, as Appl. No. 17/984,628.
Claims priority of application No. 102022209880.3 (DE), filed on Sep. 20, 2022.
Prior Publication US 2024/0093722 A1, Mar. 21, 2024
Int. Cl. F16F 1/38 (2006.01)
CPC F16F 1/38 (2013.01) [F16C 2326/01 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
an inner tube;
an outer tube radially outside of the inner tube; and
an intermediate tube portion,
wherein the inner tube and the outer tube are substantially annular and form a space therebetween;
wherein the intermediate tube portion comprises a rubber material and is disposed radially between the inner tube and the outer tube so as to substantially fill at least one circumferential section of the space;
wherein a radially outer surface of the inner tube corresponding to the at least one circumferential section comprises at least one first protruding rib that runs in a circumferential direction and a radially inner surface of the outer tube corresponding to the at least one circumferential section comprises at least one second protruding rib that runs in the circumferential direction;
wherein the at least one first protruding rib and the at least one second protruding rib are configured to form at least one interface with the intermediate tube portion;
wherein the at least one interface is configured to cause substantially normal strain in an axial direction in response to application of an axial force and substantially normal strain in a radial direction in response to application of a radial force; and
wherein the at least one first protruding rib and the at least one second protruding rib are interspersed by axial injection channels along the circumferential direction, wherein the axial injection channels are configured for axial injection of the rubber material during manufacturing of the intermediate tube portion.