Automobile gearbox synchronizer structure

The utility model discloses an automobile gearbox synchronizer structure. The automobile gearbox synchronizer structure comprises a gear hub, a gear sleeve, a synchronous ring and an integrated slide block. The technical key point is that positioning bases with circular holes are further uniformly distributed at the periphery of the gear hub, wherein a steel ball and a limiting spring are arranged in the positioning base from the outside to the inside in sequence, the positioning bases and the integrated slide block are arranged at intervals; M-type curved surface is axially arranged on a spline in the gear sleeve corresponding to the steel ball. On the basis of realizing the original function, gear-shifting suction feeling is strengthened by introducing the positioning bases and the M-type curved surface for assisting a driver to overcome sliding resistance, spring resistance and gear-entering impact, so that gear-shifting quality is improved. Meanwhile, the gear self-locking function can be improved, a shifting fork shaft positioning base is substituted, the friction force generated during the sliding of the shifting fork shaft is relieved, and the gear-shifting smoothness and the transmission efficiency of the gear-shifting system are improved. The automobile gearbox synchronizer structure is suitable for a synchronizer at each gear.