The utility model discloses an efficient and smooth gear-shifting
synchronizer assembly, and belongs to the technical field of gear-shifting
synchronizing mechanisms of automobile transmissions. The problems of gear shifting clamping stagnation and secondary
impact of vehicles with large torque, high
inertia and the like are solved; and meanwhile, the problem of unexpected out-of-gear under the sudden acceleration or braking working condition is avoided, and the reliability of the transmission is improved. The gear sleeve is provided with a sliding block ball socket tooth structure, compared with an existing gear sleeve, a free sliding groove and a limiting groove are additionally arranged, the functions of synchronization, free sliding, meshing and other stages of a
synchronizer sliding block in the gear shifting synchronization process are increased, gear shifting clamping stagnation and the second-stage gear entering feeling are eliminated, and therefore gear shifting is smoother. And meanwhile, the unexpected out-of-gear problem is avoided, and the reliability of the transmission is improved. Compared with an existing gear hub and an existing outer spline, the gear hub part is additionally provided with a high tooth structure, the large-
diameter fit clearance between the gear hub part and a gear sleeve is reduced, the deflection amount of a
synchronizer assembly is effectively reduced, the gear hub part and the gear sleeve are assembled and meshed well, gear shifting is smooth, meanwhile, the
rejection rate of the synchronizer
assembly is reduced, and part manufacturing cost is saved.