Auma Riester Gmbh + Co. Kg

Matthias Tritschler

Guido Koch

Peter Malus

Lutz Stöcklin

A fail-safe drive () for an actuating drive is provided, which has a cam disc (), at least one restoring element, a counter-element () and an output shaft (), with the cam disc () and the counter-element () being configured for joint conversion of an axial movement of the restoring element along the output shaft () into a rotational movement of the output shaft (). The cam disc () has a control cam (), the profile of which is adapted to a spring characteristic curve of the restoring element such that, in the case of activation of the failsafe drive (), a constant output movement and/or a constant output torque can be generated.

Fail-safe drive and actuating drive with a fail-safe drive

An actuator () having an energy accumulator (), with which an emergency drive () can be supplied, is configured to be tensioned by an electric motor (). The motor () displaces at least one engaging element () of the energy accumulator (), on which a restoring force of the energy accumulator () acts, along an actuating travel in normal operating mode.

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Hartheim, Germany

Matthias Tritschler