Elastic bearing with hydraulic damping properties
AssigneeWOCO Franz-Josef Wolf & Co.
InventorsWaldemar Hermann, Volker Grünig
Life of this patent
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Abstract
A pneumatically regulated classic bearing dampens hydraulically and decouples vibrations of a small amplitude using a freely displaceable element. The bearing can be engaged using a pneumatically activated control chamber, which has a miniature configuration and is located beneath the freely displaceable element, in such a way that the element forms a deformable or displaceable element for the control chamber. In place of a compensation regulation, in the control chamber, a shift to one of three possible, pneumatically determined control states preferably takes place. The states are VENTILATED, CLOSED and PRESSURIZED.
Claims3
Hydraulically damping elastic bearing comprising a conical annular support spring supporting a load connection fitting and resting directly or indirectly on a chassis connection fitting;
- a separating disc;
- a hydraulic working chamber filled with hydraulic damping fluid and defined between the separating disc and the support spring;
- a throttling channel connecting the working chamber with a compensating chamber opposed to the working chamber and defined between the separating disc and an elastic deformable compensating diaphragm;
- a loose piece for uncoupling low amplitude vibrations which is trapped in a cavity to be freely displaceable in a direction perpendicular to a plane of the separating disc;
- a casing enclosing the bearing and connecting components of the bearing which are located in axial succession in a fluid-tight and fixed manner;
- the loose piece being disc-shaped and fixed to the separating disc at its outer periphery by way of rolling plies;
- said loose piece being in contact with the damping fluid at a surface of said loose piece facing the working chamber and defining at its opposed surface a movable partition of a controlling chamber which can be pressurized pneumatically and which is separated from both the working chamber and the compensating chamber, and in combination with a compressor with a 3/2-port directional control valve for switching the controlling chamber in one of three states that include OPEN, CLOSED and PRESSURIZED, wherein the chassis connection fitting possesses a cup-shaped configuration for integrating the compressor and the 3/2-port directional control valve.
Dependencies are inferred from the claim text.