Contitech Vibration Control Gmbh

Diethard Schneider

Jan Brodersen

Guenter Eberhard

Florian Reinke

Michael Klettke

Marc Wichmann

Thomas Lingner

Günter Eberhard

Dieter Kardas

A hydromount () includes: a housing () and a compensating diaphragm (), which enclose a hydraulic volume (), a partition wall (), which partitions the hydraulic volume () into a working chamber () and into a compensating chamber (). The partition wall () contains a transfer channel (), via which the two chambers () are connected to one another, and wherein the partition wall () has an opening, in which there is a diaphragm or membrane () of flexible, elastomeric material clamped between two components (), wherein the diaphragm () is clamped between the two components () in such a way that, as a result of the clamping, a radial pretension is produced in the diaphragm ().

Hydromount

An injection molded part accommodates a threaded fastener and includes a metal insert. The insert defines a longitudinal axis and has an end face and an outer peripheral surface. A cutout extends from the end face and through the insert to permit the threaded fastener to extend therethrough. A plastic body surrounds the outer peripheral surface and has a threaded fastener contact face. The threaded fastener contact face of the plastic, body is recessed at a recessed distance below the end face of the insert which has a spring constant with respect to the longitudinal axis. The recessed distance and the spring constant are selected to deform the insert in response to a stress force applied to the end face thereof by the threaded fastener to cause a pregiven component of the stress force to be introduced into the threaded fastener contact face of the plastic body.

Injection molded part and method of making the same

A hydraulic bearing includes a support spring made of elastomeric material and a hydraulic volume partitioned into a work chamber and a compensating chamber. A partition wall is disposed between the two chambers and includes a transfer channel. For acoustic decoupling, a membrane-like decoupling element is seated and is displacement limited between two lattice plates. The decoupling element is made of flexible elastic material and is clamped laterally to be pressure tight. The decoupling membrane is radially prestressed for matching the acoustic decoupling to specific disturbing frequencies (hum frequencies). This prestressing takes place preferably because of the shrink process during vulcanization of the decoupling membrane which is made of raw rubber. The decoupling membrane can have a peripheral bead and at least one transverse strut. The strut can have a reinforcement insert.

Acoustically decoupled hydraulic bearing

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Nienhagen, Germany

Diethard Schneider