Vehicle synchronizer

The invention provides a vehicle synchronizer. The vehicle synchronizer comprises a slider, a gear sleeve, a gear hub, a synchronous ring and a gear soldered tooth, wherein the gear soldered tooth is arranged on the gear hub; the synchronous ring is arranged in the gear soldered tooth; the gear sleeve is arranged on the upper part of the synchronous ring; the slider is arranged between the gear sleeve and the synchronous ring; the slider consists of a spring, a steel ball and a drawn cup; the steel ball is in contact with a slider groove below the gear sleeve; the drawn cup is in contact with the gear hub; the slider is arranged between the gear sleeve and the gear hub. A gap between the synchronizer slider and the synchronous ring and a gap between the gear sleeve and the synchronous ring are in fit connection, the gear shifting handiness is perceived in the gear shifting process under the action of the synchronizer slider, and a driver clearly perceives the gear shifting smoothness, namely the gear shifting comfort is good; meanwhile, a gear shifting curve is good during objective evaluation.