Contitech Vibration Control Gmbh

Peter Marienfeld

Robert Genderjahn

Bernhard Uhrmeister

Meinert Holst

Hans-Juergen Karkosch

Max Werhahn

Hans-Jürgen Karkosch

The invention relates to a suspension system (), preferably a driver seat (), comprising a first suspension part (), preferably a frame () of the driver seat (); a second suspension part (), preferably a seat surface () of the driver seat (), wherein the two suspension parts () are movable relative to each other in at least one first spatial direction (Z), preferably in the vertical direction (Z); a kinematic system (), preferably a scissor kinematic system () which is designed to connect the two suspension parts () in a movable manner relative to each other at least in the first spatial direction (Z); a suspension device () which is designed to support the static load of the second suspension part (); and an actuator () which is designed to introduce a force bidirectionally between the two suspension parts () and thereby actively damp the relative movement between the two suspension parts (). The suspension system () is characterized in that the actuator () has a bearing (), preferably a ball bearing (), which is arranged within the power flow between the two suspension parts () such that an axial load can be kept away from the driven axle of the actuator () at least partly, preferably completely.

Suspension system, preferably driver seat

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 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

A switchable mount includes a partition wall which partitions a working chamber from a compensating chamber. A first diaphragm is arranged in the partition wall so as to be deflectable in the longitudinal direction of the mount. A switching actuator controls the diaphragm and, in a first state thereof, the diaphragm is fixed in a rest position and, in a second state thereof, the diaphragm is released to move in the longitudinal direction of the mount. A second diaphragm is arranged in the partition wall and is deflected in the longitudinal direction of the mount to influence the volume of the working chamber. An air chamber is arranged between the first diaphragm and the second diaphragm. In the first state of the actuator, the air chamber is closed off air-tight to the atmosphere and, in the second current-conducting state of the actuator, is connected to the atmosphere.

Engine mount for a motor vehicle

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.

Actuator

A switchable, hydraulic damping mount includes a work chamber filled with hydraulic fluid and a compensation chamber connected to the work chamber via a channel. A partition wall mutually separates the chambers. A ferromagnetic diaphragm is arranged in the partition wall and is deflectable. An electromagnetic switching actuator has a deenergized state and an energized state and controls the diaphragm. The switching actuator applies a magnetic holding force to the diaphragm and fixes the diaphragm in a rest position when the switching actuator is in the deenergized state and reduces the magnetic holding force to such an extent that the diaphragm is enabled for movement in the longitudinal direction of the mount when the switching actuator is in the energized state.

Motor mount for a motor vehicle

A hydraulic mount includes a closable bypass and a decoupling membrane. When the bypass is opened, however, the main effect that can be achieved by opening the bypass, namely the decrease in the spring rate at higher frequencies, is worsened. It is thus desirable to render the decoupling membrane ineffective when the bypass is open. The aim is achieved in that the closure device of the bypass includes blocking elements for blocking the decoupling membrane in the first switching position of the closure device when the bypass is open and can be released in the second position of the closure device when the bypass is closed.

Growing community of inventors

Marklohe, Germany

Peter Marienfeld