Zf Friedrichshafen Ag

Mowag Gmbh

General Dynamics European Land Systems-Mowag Gmbh

Uwe Fehr

Matthias Reisch

Jürgen Wafzig

Andreas Wendzel

Kai-Uwe Keller

Holger Gohmert

Michael Arnegger

Lorenz Fischer

Andreas Füßl

Hans-Jörg List

Michael Bieniek

An electro-mechanical actuator for generating an axial actuation force is provided. The electro-mechanical actuator includes an electric machine having a stator () and a rotor (). The electro-mechanical actuator also includes a spindle drive with a rotary element () and with an element that is movable in a translatory manner. A rotation of the rotary element () may result in a translatory motion of the element that is movable in a translatory manner. The rotor () and the rotary element () of the spindle drive are coupled to each other in a circumferential direction (U) such that a rotation of the rotor () results in a rotation of the rotary element () of the spindle drive (). A rotational play () is formed between the rotor () and the rotary element () of the spindle drive in the circumferential direction (U).

Electromechanical actuator for generating an axial actuating force

The protection system is used especially for the protection against a fatal effect of vertical accelerations triggered by a landmine on the passengers of an armored vehicle. For this, the sitting unit consisting of a seat body () and a backrest () is held movable in vertical direction and is coupled with an end area () of a longitudinally variable damping device (), whose other end () is connected to the roof () of the vehicle () through a carrying equipment (). In addition, the sitting unit is carried with vertical distance from the vertical guide () in a lower guide path () transversally directed so that the sitting unit executes both a downward as well as a tilting movement relative to the vehicle together with a passenger () during loading through vertical acceleration. In this way, an improved usage of the constructively limited effective length of the damping device () occurs so that the effect of the protection system is essentially improved. It is sensible to apply the same principle for the protection of all objects, which must be protected against the reaching or exceeding of a maximum load due to a too large acceleration or deceleration.

Protection system

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Friedrichshafen, Germany

Uwe Fehr