Hydraulic antivibratory device for a vehicle, and a method of manufacturing such a device

摘要

A hydraulic antivibration device comprises an inner strength member and an outer strength member together with an elastomer body disposed between the inner and outer strength members. The elastomer body includes at least two sets of two hydraulic chambers the chambers in any one set intercommunicating via a duct in which a fluid flows. The device includes a window strength member disposed inside the elastomer body and including at least one plate element close to the outer strength member. The ducts interconnect two chambers of a given set via at least a portion situated between a plate element of the window strength member and the outer strength member, and include walls formed by the elastomer body.