A kind of synchronizer and automobile

Abstract

The invention provides a synchronizer and an automobile, wherein the synchronizer includes: a gear hub, which has a plurality of ring grooves, slider grooves and bracket grooves arranged at intervals along the outer edge of the gear hub; coaxially and slidably mounted on The gear sleeve on the gear hub has spline grooves on the inner surface of its circumference; multiple sliders are installed in the slider groove of the gear hub in one-to-one correspondence; the synchronous ring coaxially installed in the ring groove of the gear hub, its There are a plurality of protrusions protruding toward the gear hub; a plurality of brackets are installed in the bracket groove of the gear hub one by one. The bracket includes a base and a boss protruding from the base. Between the base and the boss The surface of the protruding base at the joint is provided with a convex line that is pressed against the bracket groove, and legs with arc-shaped outer edges are formed at both ends of the base. The protrusions of the synchronization ring are inserted into the bracket groove and form a clearance fit with the two legs respectively. , In the radial direction, the boss connects with the spline groove. The present invention can avoid the problems of tooth hitting when the reverse gear is engaged without a synchronizer and excessive gear shifting force when the lever synchronizer is engaged in a high-speed gear.

Description

technical field [0001] The invention relates to the field of automobile transmissions, in particular to a synchronizer and an automobile. Background technique [0002] At present, for transmissions without a reverse gear synchronizer, two solutions are generally adopted to solve the problem of gear shifting: 1. Directly park and shift gears: the disadvantage of this gear shifting method is that the reverse gear engaging rate is low and accompanied by abnormal gear rattling noise; 2. . Use the lever synchronizer in the high-speed gear, and use the reverse braking function of the lever synchronizer to brake the reverse gear function. The disadvantage of this scheme is that the lever mass of the lever synchronizer is relatively large. The centrifugal force increases the shifting force of the high-speed gear (generally, the shifting force on the handle increases by 30~40N). SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to pro...

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Problems solved by technology

[0002] At present, two solutions are generally used to solve the problem of gear shifting for transmissions without reverse gear synchronizers: 1. Direct parking and gear shifting: the disadvantage of this shifting method is that the reverse gear shifting rate is low and accompanied by abnormal noise of the transmission teeth; 2. .Use the lever synchronizer in the high-speed gear, and use the reverse braking function of the lever synchronizer to brake the reverse gear function. The disadvantage of this solution is that the lever mass of the lever synchronizer is relatively large. Centrifugal force increases the shifting force of high-speed gear (generally, the shifting force on the handle increases by 30~40N)

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