Contitech Vibration Control Gmbh

Robert Genderjahn

Peter Marienfeld

Hans-Juergen Karkosch

Bernhard Uhrmeister

Max Werhahn

Stefan Preussler

Peter-Michael Marienfeld

Hans-Jürgen Karkosch

Uwe Pehlemann

A hydraulic bearing has a cylindrical main housing, a load-bearing spring enclosed by the main housing, a work chamber, which is at least partially enclosed by the load-bearing spring, with a work chamber volume filled with hydraulic fluid. The hydraulic bearing further includes a control diaphragm, which is configured to change the work chamber volume, and an actuator. The actuator is coupled to the control diaphragm for deflecting the same. The hydraulic bearing also includes an equalization chamber and a throttle duct hydraulically interconnecting the work chamber and the equalization chamber, and a cylindrical chamber housing is arranged with a first end face on an outer casing side section of the main housing, wherein the equalization chamber is formed by at least a part of an interior of the chamber housing.

Hydraulic bearing and motor vehicle having such a hydraulic bearing

The invention relates to a hydraulic bearing () comprising a bearing spring (), a working chamber () that is at least partially surrounded by the bearing spring () and that is filled with a hydraulic fluid, a first compensation chamber () and a first restrictor channel () for exchanging hydraulic fluid, said channel being formed between the working chamber () and the first compensation chamber (). The hydraulic bearing () has a controllable valve () for shutting-off or restricting the flow of hydraulic fluid through the first restrictor channel (). The invention also relates to a motor vehicle comprising a hydraulic bearing () of this type.

Hydraulic bearing and motor vehicle comprising a hydraulic bearing of this type

The invention relates to a hydraulic bearing () with a support spring (), a working chamber () which is at least partly surrounded by the support spring () and which is filled with a hydraulic fluid, a control membrane () which is designed to change a working chamber volume of the working chamber (), and an electromagnetic actuator () for deflecting the control membrane (), wherein the actuator () comprises a stator () and an armature () which can be moved in the longitudinal direction L of the stator (); the armature () is mechanically connected to the control membrane (); the stator () has a stator conductive element () made of a ferromagnetic material; the stator conductive element () has an upper stator collar () which extends in the transverse direction Q of the stator () and a lower stator collar () which extends in the transverse direction Q of the stator (); the armature () has an armature conductive element () made of a ferromagnetic material; the armature conductive element () has an upper armature collar () which extends in the transverse direction Q of the stator () and a lower armature collar () which extends in the transverse direction Q of the stator (); the upper stator collar () and the upper armature collar () face each other; and the lower stator collar () and the lower armature collar () face each other. The control membrane () is designed for a maximum deflection a in the deflection direction of the control membrane, and the mutually facing upper and/or lower collars (or, partly overlap over an overlap length u in the longitudinal direction L of the stator () such that a ratio of the overlap length u to the maximum deflection a lies between 0.1 and 1.5. The invention further relates to a motor vehicle with a corresponding hydraulic bearing ().

Hydraulic bearing and motor vehicle with such a hydraulic bearing

An actuator has an electrically conductive coil which has a longitudinal axis and a plurality of turns and a magnet arranged at a distance from the turns in radial direction relative to the longitudinal axis. The coil is partially covered by a central region of a first conducting element on a side which faces away from the magnet and the magnet is partially covered by a mid region of a second conducting element on a side facing away from the turns of the coil. The first conducting element projects beyond the coil and the second conducting element projects beyond the magnet in the direction of the longitudinal axis and there each have collar-like projections. The coil has a first winding turns region and a second winding turns region.

Actuator

An actuator has an electrically conductive coil which has a longitudinal axis and windings through which a current can flow. The coil is surrounded by a highly permeable first ferromagnetic body so that the first body has projections of highly permeable ferromagnetic material above and below the coil in the longitudinal direction. The actuator has a magnet spaced apart from the coil so that a gap forms therebetween. The magnet is surrounded by a highly permeable second ferromagnetic body so that the second body has projections of highly permeable ferromagnetic material above and below the magnet in the longitudinal direction. The magnet is statically mounted with the second body and the coil is spring mounted with the first body so that the coil and first body oscillate in the longitudinal direction when an alternating current flows through the coil. The coil is outside the magnet perpendicular to the longitudinal axis.

Actuator for damping low-frequency oscillations

An actuator includes an electrically conductive coil defining a longitudinal axis (L) and having a plurality of winding turns. A magnet is spaced from the winding turns in radial direction. A first conductive element has a mid region covering the coil on a side thereof facing away from the magnet. A second conductive element has a mid region covering the magnet on a side thereof facing away from the winding turns of the coil. The first conductive element projects beyond the coil in axial direction and the second conductive element projects beyond the magnet also in axial direction. The first and second conductive elements have respective collar-shaped projections whereat the first and second conductive elements project beyond the coil and the magnet, respectively. At least one of the first and second conductive elements is made of soft-magnetic powder composite material.

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Hannover, Germany

Robert Genderjahn