Daimler Ag

Preh Gmbh

Johannes Duenninger

Volker Entenmann

Thilo Schultheis

Joerg Reisinger

Joachim Wuest

Florian Steinert

A capacitive force sensor includes a base body, a diaphragm body, two spacers arranged between the base body and the diaphragm body, the two spacers supporting the diaphragm body on the base body, a free end formed by the diaphragm body projecting beyond one of the two spacers, a cavity formed between the diaphragm body and the base body in a region between the two spacers so that the diaphragm body bends when a force acts on the diaphragm body in the region between the two spacers, a first electrode arranged at the free end, a second electrode arranged on the base body, and an electrical contact device which makes an electrical contact with the first and second electrode. The first and second electrode define a precision capacitance meter with a measuring capacitance which changes with an action of the force.

Capacitive force sensor with diaphragm body having an extending free end forming a cantilever portion

An operating device having an optical finger navigation module for installation in a steering wheel of a motor vehicle, which allows for secure operation and can be produced at low cost, is disclosed. The operating device has a mounting frame, in which a first light guiding element and the optical finger navigation module is held by a light sealing element. The light sealing element is mounted by a snap connection on the mounting frame. The mounting frame has at least one guide element with which a movement of the mounting frame can be guided.

Operating device with optical finger navigation module for a steering wheel

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Munich, Georgia

Johannes Duenninger