Zf Friedrichshafen Ag

Uwe Schraff

Christoph Margraf

Thomas Riedisser

Hagen Doepfert

Ulrich Doerr

Markus Strobel

Peter Ziemer

Uwe Griesmeier

Leschek Debernitz

Michel Wiemer

Matthias List

Reinhard Deppert

Rainer Grundler

Ingo Lippenberger

Sebastian Grimm

Harald Tiesler

An arrangement for actuating a shift element of a gearbox includes a rotatably mounted and preloaded shift pawl () and a shift ring () with an outer toothing () and assigned to a gearbox element. A first end () of the shift pawl () is assigned to the outer toothing () of the shift ring () so as to lock or release the shift ring () in order to shift a gear stage, and a second end () of the shift pawl () is assigned to a shift gate () of a shift drum () that actuates the shift pawl (). The shift pawl () is operatively connected to at least one double torsion spring () in order to apply a preload force.

Assembly for actuating a shifting element of a transmission

An arrangement for actuating a shift element for a bottom bracket gearbox () includes a shift ring () rotatably mounted in a housing () and assigned to a gearbox component. A shift pawl () for locking or releasing the shift ring () is assigned to the shift ring () for shifting a gear stage. A support region mechanically reinforces the housing () and is provided at least along a contact region () between an inner wall () of the housing () and an outer circumference of the shift ring (). The contact region () is defined by reaction forces () acting when the shift ring () is locked.

Bottom-bracket gear

A gear set arrangement () for a bicycle gearbox () includes a planetary assembly, a stationary component (), a first and a second brake (B, B), and a first and a second freewheel clutch (F, F). One planetary gear set () of the planetary assembly includes a first rotary element, a second rotary element, and a third rotary element. The first rotary element is rotationally fixable on the stationary component () by the first brake (B). The first rotary element is connectable to the output () by the first freewheel clutch (F). The second rotary element is rotationally fixable on the stationary component () by the second brake (B). The second rotary element is connectable to the output () by the second freewheel clutch (F). The third rotary element is connected to the input () for conjoint rotation. The gear set arrangement () is configured to provide three ratios.

Gear set assembly and bicycle gearing system

Growing community of inventors

Markdorf, Germany

Uwe Schraff