Hydraulically dampened rubber bushing

Details Hydraulically dampened rubber bushing Hydraulically dampened rubber bushing

F - Mech Eng,Light,Heat,Weapons

16

F

267/65

F16F 9/00 (2006.01) F16F 13/14 (2006.01)

Patent

CA 2028181

ABSTRACT A hydraulically dampened rubber bushing includes an outer tube surrounding an inner tube and an elastic body of elastic rubber material which interconnects the tubes and has two chamber pairs which are isolated from each other through a separation wall and each of which includes chambers which are spaced apart in the direction of vibrations transmitted into the rubber bushing. The chambers of each chamber pair are connected through damping channels. The damping channels are dimensioned and matched with the total bulge elasticity of all walls of the respectively adjacent chambers, so that the enclosed mass of liquid is induced to resonantly oscillate at different frequencies of vibrations transmitted during applications of the rubber bushing. The separation wall loosely but sealingly engages the outer tube when no vibrations are transmitted and is elastically deformed by the outer sleeve towards the inner sleeve. The rubber bushing exhibits good damping over a larger frequency range of the transmitted vibrations for extended periods. PAT 15763-1

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