MECHANICAL GEAR BOX SYNCHRONISING DEVICE

摘要

The invention concerns a mechanical gear box synchronising device, comprising a hub (1) mounted on a shaft driving the device, a sliding shaft (2) driven in rotation by the hub (1) and axially movable thereon, and at least a synchronising ring (3) driven in rotation by the hub (1) and driven back axially by the sliding shaft (2) towards an idler (4) to equalise by friction the speed of the latter with that of the driving shaft before gear engagement. The invention is characterised in that each ring (3) transforms the torque received from the hub (1) into axial thrust against an idler (4), so as to transmit itself the engine torque to said idler (4) by exerting a constant pressure thereon.