Zf Friedrichshafen Ag

Friedrichshafen Ag

Zp Friedrichshafen Ag

Hagen Doepfert

Thomas Riedisser

Matthias Reisch

Peter Ziemer

Christoph Margraf

Ulrich Doerr

Stefan Beck

Michael Wechs

Fabian Kutter

Thomas Martin

Tamas Gyarmati

Mladjan Radic

Markus Strobel

Uwe Schraff

Uwe Griesmeier

Peter Tiesler

Eckhardt Lübke

Kim Führer

Matthias List

Leschek Debernitz

Reinhard Deppert

Philip Dötschel

Rainer Grundler

Oliver Bayer

Ingo Lippenberger

Sebastian Grimm

Harald Stier

Ulrich Hantke

Harald Tiesler

Michel Wiemer

Christoph Gradl

Tobias Karstens

Jürgen Kemmer

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 transmission () includes an input shaft (), a first and a second output shaft (), and a differential () with a first and a second planetary gear set (). A first gear set element of the first planetary gear set () is connected to the input shaft () for conjoint rotation. A second gear set element of the first planetary gear set () is connected to a first gear set element of the second planetary gear set () conjoint rotation. A third gear set element of the first planetary gear set () is connected to the first output shaft () for conjoint rotation. A second gear set element of the second planetary gear set () is connected to the second output shaft () for conjoint rotation. A third gear set element of the second planetary gear set () is connected to a stationary component for conjoint rotation. The second planetary gear set () is axially adjacent to the first planetary gear set () and the planet gears () of the first planetary gear set () do not axially overlap the planet gears () of the second planetary gear set ().

Transmission for a drive train of a vehicle

A bottom bracket gear mechanism for a bicycle or a pedelec includes a gear mechanism shifting group in which a second element of the first gear set is connected to a first shaft, a third element of the first gear set is connected via a fourth shaft to a second element of the second gear set, and a first element of the first gear set is connected to a fifth shaft. A first element of the second gear set is fixable via a third shaft and the second shifting element. The third shaft is connectable to the fifth shaft via the sixth shifting element. The third element of the second gear set is fixable via a second shaft and via the first shifting element. The second shaft is connectable to the first shaft via the fifth shifting element.

Bottom bracket gear mechanism of planetary design for a bicycle or a pedelec

A power train () for a motor vehicle () includes an electric machine () and a transmission () with at least one first planetary gear set (P) that includes gear set elements with a sun gear (P), a planet carrier (P) and a ring gear (P). The electric machine () includes a rotor (), which transmits drive power via a rotor shaft () at least indirectly onto one of the gear set elements in the first planetary gear set (P). The rotor shaft () is connected via a spline () to a first gear set element in the first planetary gear set (P) for conjoint rotation.

Power train for a motor vehicle

A bottom bracket planetary gear mechanism for a bicycle or a pedelec includes a gear mechanism shifting group having first and second planetary gear sets and first, second, and fifth shifting elements. A second element of the first gear set is connected to a first shaft, a first element of the first gear set is connected via a fourth shaft to a first element of the second gear set, and a third element of the first gear set is fixable via a second shaft and a first shifting element. The third element of the first gear set is connected via the second shaft to a second element of the second gear set. A third element of the second gear set is fixable via a third shaft and a second shifting element. A fifth shifting element blocks the first and second gear sets.

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

A device for transmitting torque and axially securing a first torque-transmitting component () and a second torque-transmitting component () is provided. The first component () includes axially projecting first projections () distributed over the circumference and have first gaps () arranged therebetween. The second component () includes radially projecting second projections () having second gaps () arranged therebetween. Each second projection () on the second component () protrudes into a respective first gap () in the first component (). At least two of the second projections () include a section () that projects axially in the direction of the first component () and is configured in each case such that, when the device is installed, the section rests axially via an end face () against the first component ().

Device for transmitting torque and axially securing two torque-transmitting components

A transmission for a power train of a motor vehicle has a first stationary housing part having a first axial contact surface, a second stationary housing part, and a first sealing element on the second stationary housing part, the first sealing element being axially compressible. Additionally, the transmission includes a first planetary gear set including a planet carrier, at least one planet gear, a sun gear, and a ring gear. The planet carrier is fixed relative to one or both of the first stationary housing part and the second stationary housing part. One side of the planet carrier rests against the first axial contact surface, where the first sealing element acts on another side of the planet carrier to axially preload the planet carrier against the first axial contact surface to prevent the planet carrier from tilting relative to a rotation axis of the first planetary gear set.

Transmission for a power train of a motor vehicle, and power train having such a transmission

A multi-stage planetary transmission for a bicycle or a pedelec includes a transmission input shaft (), a transmission output shaft (), and at least three planetary gear sets (VRS, VR, VR, RS, RS, NRS, NR, NR). A first planetary gear set (RS) and a second planetary gear set (RS) are configured as a main gear set and at least one further planetary gear set (VRS, VR, VR, NRS, NR, NR) is configured as a front-mounted gear set and/or as a rear-mounted gear set. At least three free-wheel clutches (F, F, F, F) and at least three brakes (B, B, B, B) are provided for implementing at least eight gears (G, G, G, G, G, G, G, G, G, G, G, G, G, G, G, G). Moreover, the multi-stage transmission may be a bottom bracket transmission. In addition, a bicycle or pedelec with the multi-stage transmission is proposed.

Planet-type multi-stage transmission for a bicycle or pedelec

A dog clutch () includes a piston () that is firmly connected to a sensor bolt () at one axial end of the sensor bolt (). The piston () is coaxially aligned with the sensor bolt (), and the sensor bolt () is configured as a sensor element for a position sensor () at a sensor section () of the sensor bolt () that is positioned on a free, piston-remote axial end () of the sensor bolt ().

Jaw clutch

Growing community of inventors

Lindau, Germany

Hagen Doepfert