A gear shifting system has a gear shift sleeve that is axially guided with driving toothing on a driving toothing of a transmission shaft, providing at least three shift positions with a rotationally fixed connection of the transmission shaft to a respective transmission component. A respective tooth flank of at least one tooth of one driving toothing has peripheral projections configured axially along the respective tooth between respective adjacent regions where teeth of the other driving toothing move axially in the shift positions of the gear shift sleeve. A gap width of a respective gap between the teeth of the other driving toothing is greater than or equal to a sum formed by a tooth width of the at least one tooth of the one driving toothing and an effective width of the projections.

A gear shifting system has a gear shift sleeve that is axially guided with driving toothing on a driving toothing of a transmission shaft, providing at least three shift positions with a rotationally fixed connection of the transmission shaft to a respective transmission component. A respective tooth flank of at least one tooth of one driving toothing has peripheral projections configured axially along the respective tooth between respective adjacent regions where teeth of the other driving toothing move axially in the shift positions of the gear shift sleeve. A gap width of a respective gap between the teeth of the other driving toothing is greater than or equal to a sum formed by a tooth width of the at least one tooth of the one driving toothing and an effective width of the projections.

A shifting sleeve support of a synchronisation device includes an outer toothing for meshing with a shifting sleeve and a groove, which interrupts the outer toothing. The groove has groove walls with an asymmetrical cross-section, and a groove bottom. The groove may form a pressure piece receptacle, a stop for the shifting sleeve, or a stop for a synchroniser ring, for example.

A shifting sleeve support of a synchronisation device includes an outer toothing for meshing with a shifting sleeve and a groove, which interrupts the outer toothing. The groove has groove walls with an asymmetrical cross-section, and a groove bottom. The groove may form a pressure piece receptacle, a stop for the shifting sleeve, or a stop for a synchroniser ring, for example.

Clutch device with a dog clutch having inner toothing of a sliding sleeve which is displaceable as part of the dog clutch between a clutch body and the hub of an idler wheel along the outer teeth of the clutch body and the outer toothing of the hub for coupling and decoupling. The inner toothing of the sliding sleeve can be produced comparatively simply compared to the prior art and results in a reduced installation space.

Clutch device with a dog clutch having inner toothing of a sliding sleeve which is displaceable as part of the dog clutch between a clutch body and the hub of an idler wheel along the outer teeth of the clutch body and the outer toothing of the hub for coupling and decoupling. The inner toothing of the sliding sleeve can be produced comparatively simply compared to the prior art and results in a reduced installation space.

A product comprising: an axle shaft and an input shaft, wherein the axle shaft is coaxial with the input shaft; a clutch operatively connected to the axle shaft and the input shaft constructed and arranged to selectively couple and decouple the input shaft and the axle shaft; an actuator operatively connected to the clutch to drive the clutch; and a synchronizer operatively connected to the clutch to synchronize the coupling of the input shaft and the axle shaft.

A product comprising: an axle shaft and an input shaft, wherein the axle shaft is coaxial with the input shaft; a clutch operatively connected to the axle shaft and the input shaft constructed and arranged to selectively couple and decouple the input shaft and the axle shaft; an actuator operatively connected to the clutch to drive the clutch; and a synchronizer operatively connected to the clutch to synchronize the coupling of the input shaft and the axle shaft.

A hydraulic synchronizer selectively couples one or more gears to a drive shaft. The synchronizer has a shaft hub with a splined annulus and a fluid passage. A ring is disposed about the shaft hub and movable along a rotation axis of the shaft hub. A shift collar is fixedly coupled to the ring and has a splined annulus engaged with the splined annulus of the shaft hub. The shift collar is configured to engage splines of a gear when the ring is in an engaged axial position and to disengage the splines of the gear when the ring is in a neutral position. The shift collar transmits rotational input from the shaft hub to the gear when the ring is in the engaged axial position. Hydraulic chambers receive hydraulic fluid from the fluid passage and move the ring to the engaged and neutral positions.

A synchronizer is provided for torsionally connecting a gear to an axially aligned shaft. The synchronizer includes a hub connected with the shaft, a sleeve having an inner diameter with spline teeth for torsional connection with the hub being axially movable upon the hub, a blocking ring torsionally connected on the hub having an angular lost motion relationship with the sleeve, the blocking ring having at least a first annular conical friction surface orientated radially inward and axially toward the hub and a second annular conical friction surface oriented radially inward and axially outward from the hub, the blocking ring having blocking cogs preventing axial movement of the sleeve toward the gear when the gear is in a non-synchronous condition, and an engagement ring for fixed connection with the gear, the engagement ring having a complementary annular conical friction surfaces.