Self-locking mechanism of synchronizer

Abstract

The invention discloses a self-locking mechanism of a synchronizer. The self-locking mechanism comprises a high-gear conical ring and a low-gear conical ring. High-gear locking pins are inserted in the high-gear conical ring in a penetrating manner. Low-gear locking pins are inserted in the low-gear conical ring in a penetrating manner. A sliding gear sleeve is arranged between the high-gear conical ring and the low-gear conical ring and provided with two sets of holes. The two sets of holes are distributed in a non-equal manner, and the high-gear locking pins and the low-gear locking pins are sleeved with the two sets of holes respectively. Springs matched with the low-gear locking pins are arranged in the circumferential direction of the high-gear conical ring. The springs are embedded springs or disc springs with cylinders, wherein the force transmission area of the springs and the low-gear locking pins can be increased, and one ends of the springs are closely folded. Or, ejector pins capable of increasing the force transmission area of the springs and the low-gear locking pins are arranged between the springs and the low-gear locking pins. The phenomenon that gear colliding happens in the process that the synchronizer loses synchronization due to unreliable self-locking can be avoided, and the synchronizer is prevented from being damaged.

Description

technical field [0001] The invention relates to a self-locking mechanism, in particular to a synchronizer self-locking mechanism. Background technique [0002] The existing synchronizer spring is a cylindrical helical spring, and its end face only contacts with the side of the cylindrical low-grade locking pin at two points. Since the force generated after the spring is compressed is relatively large, and the general hardness of the spring is greater than that of the side of the low-grade locking pin, it will cause There is a pit on the side of the low-grade locking pin. With the use of the synchronizer, the pit gradually becomes larger, shortening the effective compression distance of the spring, which will reduce the self-locking force of the synchronizer, so that the lock of the synchronizer is unreliable. During the synchronization process, the tooth beating phenomenon occurs, and the synchronizer is damaged. Contents of the invention [0003] The purpose of the prese...

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Problems solved by technology

[0002] The existing synchronizer spring is a cylindrical helical spring, and its end face only contacts with the side of the cylindrical low-grade locking pin at two points. Since the force generated after the spring is compressed is relatively large, and the general hardness of the spring is greater than that of the side of the low-grade locking pin, it will cause There is a pit on the side of the low-grade locking pin. With the use of the synchronizer, the pit gradually becomes larger, shortening the effective compression distance of the spring, which will reduce the self-locking force of the synchronizer, so that the lock of the synchronizer is unreliable. During the synchronization process, tooth beating phenomenon occurs, and the synchronizer is damaged.

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