Patent ID: 8511451

Claim:
A clutch assembly for connecting a shaft to a rotary member mounted on said shaft in a rotationally fixed manner, the clutch assembly comprising: a sliding sleeve which is rotationally fixed to the shaft, is axially slidably mounted on said shaft and is provided with a first gearing; a clutch body which is rotationally fixed to the rotary member and provided with a second gearing which can mesh with the first gearing to connect the shaft and the rotary member in a rotationally fixed manner; and a locking synchronisation unit having a synchroniser ring with a friction surface, said ring permitting the speeds of the shaft and the rotary member to be synchronised before the meshing of the first and second gearings, wherein the locking synchronisation unit further comprises a locking member which is coupled to the sliding sleeve by a detent groove and to the synchroniser ring in the rotational direction (D) by a pair of locking surfaces, wherein the pair of locking surfaces is situated between the locking member and a synchroniser member, the latter being coupled to the locking member in the axial direction (A) and to the synchroniser ring in the rotational direction (D), wherein relative movement in the rotational direction (D) between the locking member and the synchronizer member is hindered.