Air spring with an elastomeric air-spring bellows and an integrated damping device

摘要

An air-spring/damper device has an elastomeric air-spring bellows which is fixed airtightly at both ends to respective components to be sprung relative to one another, forming a closed, pressurisable spring volume. The device also has a hydraulic oscillation damper which has a damper plunger which is arranged on one component and plunges into a cup-shaped damping space filled with a hydraulic damping medium, which is arranged on the other component, the damping volume being divided into two volumes connected to one another by a restriction. In order, in an air-spring/damper device of this kind, to be able to damp vertical and horizontal oscillations with a low outlay on construction and to permit an axial lateral offset of the components to be sprung relative to one another, the damping space (19) is divided off from the interior (16) of the first air-spring bellows (11) by a second air-spring bellows designed as a rolling bellows (23). The rolling bellows (23) is attached at one end to the circumference at the damper plunger (21). The rolling fold (25) of the rolling bellows (23) lies in the annular gap (20) between the damper plunger (21) and the concentric wall of the damping space (19). The partial volume (29) of the damping volume not closed off by the rolling fold (25) is designed to be elastically variable in volume. <IMAGE>