Preh-werke Gmbh Co. Kg

Preh Gmbh

Stefan Schuberth

Andreas Kramlich

Oliver Zegula

Thilo Schultheis

Wolfgang Kuechler

Reinhold Moret

Michael Martin

Arthur Klossek

Volker Gessner

Dirk Erdloff

Michael Karch

Dirk Vormann

Peter Kraus

An operator control element with magnetic return for a number of switching and/or control functions: includes an abutment part; an actuating part which can be moved, for example displaced and/or pivoted, by hand from an inoperative position in at least two opposite directions with respect to the abutment part; magnetic return means for returning the actuating part into the inoperative position; and detection means for producing an electrical signal corresponding in each case at least to the maximum positions and the inoperative position of the actuating part. The magnetic return means include at least one actuating part-side ring magnets and one abutment part-side ring magnet arranged in the inoperative position such that the end faces thereof face one another and are spaced apart. They are arranged so as to pull the actuating part towards the abutment part and that they are concentric.

Operator control element with magnetic return

The invention relates to a rotary control element comprising a control element body and a rotary button () mounted so as to be rotatable about at least one axis of rotation (), wherein the control element body and the rotary button () cooperate such that a first associated switching function is provided by rotating the rotary button (). The rotary control element according to the invention is characterized by the rotary button () being mounted so as to be displaceable relative to the control element body in at least one direction which is substantially perpendicular relative to the axis of rotation (), with at least one additional switching function being provided.

Control element for a motor vehicle

A system is provided that operates on the magnetorheological principle as a detent or wiper element and/or for electrical detection of direction of rotation. The system includes a gear pump, a rotary knob, and at least one gear. The gears is mechanically driven by the rotation of the rotary knob. A magnetorheological fluid is moved and/or pumped within a channel or ring. The viscosity of the fluid is changed by a pulsed magnetic field at a first coil that is provided on the channel, and thereby a change in the torque or the detent is produced. A second coil that is provided on the channel senses a direction of rotation of the rotary knob.

Control element

A rotary knob device ( ) having a key function includes a key ( ) in a rotary knob ( ), which is operated separately from the rotary knob so that the key ( ) need not also be moved when the rotary knob ( ) is moved. In this regard, a holder ( ) is provided inside the rotary knob ( ), on which the rotary knob ( ) and the key ( ) are mounted to be thereby linked together structurally while functioning separately. The rotational control is transmitted by the rotary knob ( ), while key, linear movement, control is transmitted through the separate key ( ).

Rotary knob device with a key function

A rotary switch or controller is structured to have a so-called impact criteria or characteristic by having members with predetermined yield, or breaking, points ( ) which are integrated into the rotary switch ( ) so that when a high force acts on the rotary switch ( ), a top part ( ) of a rotary switch or rotary controller ( ) is allowed to be collapsed into a front panel ( ) of a passenger vehicle or commercial vehicle on which the rotary switch is used. These yield elements ( ) may be structured as ribs ( ) that have intended breaking points ( ) therebetween, or may be structured as spring elements ( ).

Rotary switch

Growing community of inventors

Bad Neustadt, Germany

Stefan Schuberth