Fluid-filled resilient bushing having damping means within fluid

Details Fluid-filled resilient bushing having damping means within fluid Fluid-filled resilient bushing having damping means within fluid

1987-06-24

1988-06-07

Kashnikow, Andres

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

180312, 248562, F16M 102, F16M 500, F16M 700, B62D 2100

Patent

active

047491744

ABSTRACT:
A fluid-filled resilient bushing including an annular resilient member interposed between inner and outer sleeves, and a stopper block having a pair of stopper portions disposed in respective fluid chambers defined by the outer sleeve and the resilient member. The chambers are located opposite to each other in a first direction in which the bushing receives vibrations. The two chambers, filled with an incompressible fluid, communicate with each other through an orifice. The stopper portions extend from the inner sleeve toward the outer sleeve. Each stopper portion has a radial end face having an edge which is spaced apart from a periphery of the corresponding fluid chamber in a second direction perpendicular to the first direction, so as to define an annular spacing. A damping member is provided on the radial end face of at least one of the stopper portions. The damping member projects from the edge of the end face substantially in the second direction, such that the damping member cooperates with the periphery of the corresponding fluid chamber to define an annular gap smaller than the annular spacing.

REFERENCES:
patent: 3642268 (1972-02-01), Hipsher
patent: 3698703 (1972-10-01), Hipsher
patent: 4090389 (1978-05-01), West
patent: 4630806 (1986-12-01), Dan et al.
patent: 4700934 (1987-10-01), Andra et al.
patent: 4702346 (1987-10-01), Uno et al.

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