| 摘要 |
The invention relates to a synchronization system (10) for a change-speed gearbox comprising a synchronizing body (12) which is assigned to a gearbox shaft, and comprising a first and a second synchronizing ring (32, 34, 36, 38), which are assigned to a first and a second gear wheel (28, 30) respectively. Furthermore, the synchronizing ring (10) has a sliding sleeve (26) and at least one pressure piece (18), which is displaceably arranged on the synchronizing body (12) and is able to exert an axial compressive force on the corresponding synchronizing ring (32, 34, 36, 38). Moreover, the synchronizing ring (10) has a resilient actuating element (20), which acts between the sliding sleeve (26) and the pressure piece (18), a latching recess (50) for the neutral position and a ventilation contour (54) being provided on the sliding sleeve (26). The ventilation contour (54) can interact with the actuating element (20) in such a way that, when the sliding sleeve (26) is moved in order to engage with one of the gear wheels (28, 13), the pressure piece (18) is loaded away from the corresponding synchronizing ring (32, 34, 36, 38). The ventilation contour (54) has an axial length which is no more than twice the idle stroke of the sliding sleeve (26) between the neutral position and the position in which the corresponding synchronizing ring (32, 34, 36, 38) presses against a frictional surface assigned thereto. |
