Zf Friedrichshafen Ag

Peter Fenn

Matthias Reisch

Wolfgang Grosspietsch

Angelika Ebert

Jörg Sudau

Thomas Riedisser

Juergen Wafzig

Andreas Ratte

Linus Eschenbeck

Thomas Walter

Klaus Reuter

Matthias Weidner

Rüdiger Lotze

Martin Flückiger

Andreas Jung

Ralf Steinfeldt

Matthias Mülier

Florian Pöhnlein

Jörg Buhl

Johann Vikuk

Christian Struck

An actuating device for applying actuating forces in a friction clutch device for engaging and disengaging a friction clutch assembly of the friction clutch device. The torque transmission device comprises the actuating device for transmission of torque between a drive unit and a transmission which also includes the friction clutch device. A method for installing a torque transmission device of this type. Various aspects relate to setting of a pre-load on a bearing of the actuating device, setting an over-dead-point configuration for a compensation spring associated with at least one rotary member of the actuating device, setting a rotation movement range for the rotary member and/or an axial movement range for an actuating element which can be displaced axially by rotation movement imparted to the rotary member, and producing either a normally engaged or disengaged characteristic in a normally-engaged or normally-disengaged friction clutch assembly with the compensation spring.

Actuating device for a friction clutch device and torque transmission device formed by the same

An actuating drive for transmitting drive torque to a power takeoff, comprising a drive unit; a braking device comprising a cylindrical surface; and a wrap spring having a plurality of turns which are concentric to the cylindrical surface, a pair of ends, a first actuating area on one of the ends, and a second actuating area on one of the ends. When the drive unit exerts a drive torque in a first direction, the first actuating area is nonrotatably connected to the drive unit, the turns undergo a diameter change away from the cylindrical surface, and the second actuating area is nonrotatably connected to the power takeoff for transmitting drive torque. When the drive torque is interrupted, the turns undergo a diameter change toward the cylindrical surface and frictionally engage the cylindrical surface to block transmission of restoring torque from the power takeoff to the drive unit.

Actuating drive with a wrap spring arrangement

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Waigolshausen, Germany

Peter Fenn