Lock pin type three-conical-surface synchronizer

Abstract

The invention discloses a lock pin type three-conical-surface synchronizer which comprises a high-gear conical ring assembly, a synchronizer sliding gear sleeve, a low-gear conical ring assembly and three groups of conical surface friction pairs, wherein the high-gear conical ring assembly, the synchronizer sliding gear sleeve and the low-gear conical ring assembly are sequentially arranged; a high-gear lock pin of the high-gear conical ring assembly is connected with a high-gear lock hole of the synchronizer sliding gear sleeve; the three groups of conical surface friction pairs comprise a first friction pair formed by a friction internal ring assembly and a friction middle ring, a second friction pair formed by the friction middle ring and a friction external ring and a third friction pair formed by the friction external ring and a low-gear gear respectively; the friction internal ring assembly comprises a friction internal ring and a low-gear lock pin, and the low-gear lock pin of the friction internal ring assembly is connected with a low-gear lock hole in the synchronizer sliding gear sleeve; the friction external ring and the friction internal ring are both oppositely provided with snap spring slots, and are relatively positioned by snap springs arranged in the snap spring slots. According to the lock pin type three-conical-surface synchronizer, a novel mechanical structure is adopted, so that the problems of poor concentricity of the three conical surfaces and unreliable gear engagement locking of the three-conical-surface synchronizer are solved.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of synchronizer design, in particular to a lock-pin type three-cone synchronizer. [0003] 【Background technique】 [0004] The lock pin synchronizer is widely used as an auxiliary box synchronizer for pneumatic shifting because of its simple structure, high lock pin strength, and good impact resistance. The high and low gears of the sub-box synchronizer of the domestic mainstream models are all designed with a single cone. With the improvement of users' requirements for shifting comfort, the performance of the low-speed synchronizer of the sub-box and the obvious difference from the high gear have made users dissatisfied . [0005] In principle, the pin-type synchronizer can double the performance of the synchronizer by increasing the number of mating cones. There are also some design ideas of pin-type three-cone synchronizers at home and abroad, and their common points are: the mechanical structur...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems existing in the prior art, the present invention provides a lock-pin type three-cone synchronizer, which solves the problem of the concentricity difference of the three cone surfaces of the three-cone synchronizer and the unreliable locking of gears through a new mechanical structure

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