Zf Friedrichshafen Ag

Zf Friedrichshafen

Michael Drabek

Uwe Beer

Gerhard Gumpoltsberger

Wolfgang Rieger

Michael Ebenhoch

Hans-Joachim Martin

Matthias Retsch

Stefan Csajagi

Rudolf Kauffeldt

Jan-Peter König

Jan-Peter Konig

Harald Klose

Wolfgang Bernau

A shifting rocker () for a transmission comprises two arms (), between which a mount for a sliding sleeve is provided. The shifting rocker () is mounted in a transmission housing at two bearing points () such that it can pivot. Further, a lever arm () is positioned on the shifting rocker (), via which force is applied to the shifting rocker () for the purpose of pivoting the shifting rocker () about the bearing points (). The lever arm () is positioned on the shifting rocker () in the area () between the two bearing points ().

Gear shift fork for shifting a transmission

A method for oiling the axial stops () on components () fixed on a shaft (), provided for loose wheels () arranged on the shaft. According to the method, oiling of the axial stops () occurs by supplying oil through an axially extending bore or oil duct () of the shaft () and through grooves () formed on the axial stop () with the grooves being in fluid flow connection with the oil duct ().

Method and device for oiling the axial approaches of loose wheels disposed on a shaft

A device for latching and locking of shift rockers (1, 1') of a shift device of a transmission. The device has a lock part (3, 3&#x2032;), for each shift rocker (1, 1&#x2032;), which resides in a receptacle (2) of the shift rocker (1, 1&#x2032;), which interacts with a lock contour (5, 5&#x2032;), positioned in a non-moving area of the transmission, for the latching purpose, whereby the lock part (3, 3&#x2032;) also serves, in addition to the latching, as an interlock for the shift rocker (1, 1&#x2032;).

Device for latching and locking shift rockers of a shift device of a transmission, and use of a device of said type

An arrangement of a hydraulically actuated shift actuator including a shift cylinder (), arranged outside the hydraulic control unit of a transmission. The shift cylinder () of the shift actuator is fixed on a flat or circular machined area () on the inside of a housing (). The side of the housing () facing away from the shift cylinder () has a flat surface () on which the hydraulic control unit () is fixed in a hydraulically leak-proof manner.

Hydraulically actuated shift actuator assembly

A shifting device () for shifting a motor vehicle transmission with a shift selector shaft on which a plurality of shift elements () such as shift forks or shift rockers () are arranged and can be displaced to carry out a shifting operation. The shifting device () includes one hydraulic shift cylinder (), that can be actuated from both sides, with a piston () that can be displaced within a cylinder housing () and which is actively connected with a shift element () to be actuated. To simplify a shifting device () of this type, the piston () has a piston rod () that follows the movement of the piston () and can be connected directly to the shift element () in a detachable manner.

Shifting device for shifting a motor vehicle gear box

A gear transmission mechanism () for motor vehicles having a main shaft () and a countershaft () parallel to one another, on which different gears for different gear ratios are arranged. The countershaft () is arranged above a horizontal plane (X-Y axis) containing a main shaft axis () with respect to the axle system of the vehicle so that installation space for the functional components (gearshift elements, a hydraulic system) of the transmission is available below the gearset formed by the gearbox wheels.

Gear transmission mechanism with a layshaft

A switching mechanism of a multiple change-over gear with an axially displaceable and pivoted gearshift lever shaft having a shift finger formed on the gearshift lever shaft with switching wings which are operatively connected with a synchronization and coupling device for wheels supported on a wheel set shaft of the gearing unit, and with cams formed on the switching wings with which the shift finger can mesh for the execution of a process of gear ratio modification and, over the cams, can axially displace the switching wings.

Shifting device with a single rod on a gearbox

In a shifting assembly for a multiple-gear variable speed motor vehicle transmission, a central selector or shifting shaft () is mounted in the transmission housing () such that it can be rotated and displaced axially. By rotating the selector or shifting shaft () a coupling to be actuated in a shift gate can be selected, and by subsequently axially displacing the shaft, the gears can be engaged. At least two roller arms (), spaced somewhat from one another, are positioned on the selector or shifting shaft (), bearing a rod () between them. The rod () is mechanically linked with a contoured element or lever () that is mounted in the transmission housing () such that it can swivel. The contoured edge () of the contoured element or lever () mirrors the selection patterns and is spring loaded against the rod () by a spring element ().

Shifting device having shift recognition feature

A shifting device for a transmission, in which at least one gearshift package is allocated to two non-successive gears and each of these gearshift packages is coupled with a gearshift lever. An H- or a multiple H-shifting diagram is allocated to the gearshift lever, in which the gears that can be selected within a gearshift path are allocated to different gearshift packages. The gearshift lever and the gearshift packages are connected to a conversion device with which a gearshift lever movement to take out a previous gear in a gearshift path causes this gear to be taken out in a first gearshift package. A gearshift lever movement for putting in the new gear in the same gearshift path, a second gearshift package puts in this new gear. The conversion device functions in such a way that the gearshift lever is coupled with an axially displaceable and radially pivotable shift finger shaft.

Growing community of inventors

Brandenburg, Germany

Michael Drabek