Shifting arrangement for a speed changing transmission of a motor vehicle
AssigneeDr. Ing. h.c.F. Porsche Aktiengesellschaft
InventorDieter Knape
Life of this patent
Estimating the term…
Abstract
A shifting arrangement for a synchronized motor vehicle transmission with six forward gears and one reverse gear has a longitudinally displaceably and rotatably disposed shifting shaft whose shift fingers can be introduced into mutually aligned grooves of shift tongues for the preselecting of the transmission gears. The shift tongues are pivotally connected to swinging forks which are pivotally arranged in the transmission case and, via their forks, engage in a formlocking manner in sliding sleeves of synchronizer clutches. The shifting fork of the reverse gear is fastened on a shift rod situated perpendicularly to the shifting shaft on which a guide rail is constructed for the longitudinal guiding of the shift tongues.
Claims11
A shifting arrangement for a synchronized speed changing transmission of a motor vehicle comprising:
- a plurality of shiftable forward gears;
- swinging forks that engage in synchronizer clutches to shift the forward gears the swinging forks being pivotally disposed in a transmission case;
- a shifting shaft disposed in a longitudinally displaceable and rotatable manner in the transmission case in parallel to a bearing axis of the swinging forks;
- shift tongues fastened to the swinging forks and having mutually aligned grooves;
- a shift finger fastened to the shifting shaft and longitudinally displaceable in the grooves, the shift interacting with the shift tongues such that by longitudinal displacement in the grooves and a rotating of the shift finger, the transmission gears are selected;
- and
- a shift rod having a guide rail, wherein the shift tongues are longitudinally guided on the guide rail.
A shifting arrangement for a synchronized speed changing transmission of a motor vehicle comprising:
- a plurality of shiftable forward gears;
- swinging forks that engage in synchronizer clutches to shift the forward gears the swinging forks being pivotally disposed in a transmission case;
- a shifting shaft disposed in a longitudinally displaceable and rotatable manner in the transmission case in parallel to a bearing axis of the swinging forks;
- shift tongues fastened to the swinging forks and having mutually aligned grooves;
- a shift finger fastened to the shifting shaft and longitudinally displaceable in the grooves, the shift finger interacting with the shift tongues such that by longitudinal displacement in the grooves and a rotating of the shift finger, the transmission gears are selected;
- and
- a shifting fork arranged on the shift rod in a longitudinally displaceable and rotatable manner.
A shifting arrangement for a synchronized speed changing transmission of a motor vehicle comprising:
- a plurality of shiftable forward gears;
- swinging forks that engage in synchronizer clutches to shift the forward gears the swinging forks being pivotally disposed in a transmission case;
- a shifting shaft disposed in a longitudinally displaceable and rotatable manner in the transmission case in parallel to a bearing axis of the swinging forks;
- shift tongues fastened to the swinging forks and having mutually aligned grooves;
- a shift finger fastened to the shifting shaft and longitudinally displaceable in the grooves, the shift finger interacting with the shift tongues such that by longitudinal displacement in the grooves and a rotating of the shift finger, the transmission gears are selected;
- a shift rod;
- and
- a shifting fork which is fastened on an end face of the shift rod and which operates a reverse gear (R).
A shifting arrangement for a synchronized speed changing transmission of a motor vehicle comprising:
- a plurality of shiftable forward gears;
- swinging forks that engage in synchronizer clutches to shift the forward gears the swinging forks being pivotally disposed in a transmission case;
- a shifting shaft disposed in a longitudinally displaceable and rotatable manner in the transmission case in parallel to a bearing axis of the swinging forks;
- shift tongues fastened to the swinging forks and having mutually aligned grooves;
- a shift finger fastened to the shifting shaft and longitudinally displaceable in the grooves, the shift finger interacting with the shift tongues such that by longitudinal displacement in the grooves and a rotating of the shift finger, the transmission gears are selected;
- wherein the shift tongues are longitudinally guided on the shift tongue of third and fourth gears (G3/G4);
- and further comprising a shift rod forged to the guide rail.
Dependencies are inferred from the claim text.