Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1989-02-07
1989-12-12
Butler, Douglas C.
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
267219, 267 6428, 267122, 267 35, F16F 908, F16F 1300, B60K 512
Patent
active
048862517
ABSTRACT:
The invention relates to a hydraulically damping rubber bearing engine mount for motor vehicles, having two end walls lying opposite one another in the axial direction and two chambers which are designed as a pressure and an auxiliary chamber and which contain a damping fluid and are connected to one another by a restricted orifice. An annular, rubber-elastic spring element adjoins the pressure chamber and is secured on an end wall. A compensating chamber adjoins the auxiliary chamber and is separated from the latter by a bellows. The damping characteristics of the rubber bearing are alterable by intervention from outside. In order to be able to alter the damping effect of the rubber bearing continuously right up to complete cancellation, a diaphragm is clamped fluid-tightly in the pressure chamber and is loaded on the one side by the damping fluid and on the other side by compressed air which can be fed in from outside. When the diaphragm is loaded by compressed air, an air chamber is formed between the diaphragm and the spring element with the diaphragm lifting off partially or completely from the spring element in response to the amount of compressed air fed from the outside in accordance with a control signal proportional to the desired vibrational characteristics of the vehicle.
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Butler Douglas C.
Daimler-Benz Aktiengesellschaft
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