Lock pin type synchronizer

Abstract

The invention provides a lock pin type synchronizer. The lock pin type synchronizer comprises a gear sleeve, synchronizing rings and gear-ring conical rings. The gear sleeve is fixedly connected with the synchronizing rings distributed on the two sides of the gear sleeve through locking pins. The gear-ring conical rings are arranged on the outer sides of the synchronizing rings in a matched manner respectively. An axially-through hole is formed in the center of the gear sleeve. The portions, located on the periphery of the hole, of the two opposite end faces of the gear sleeve outwards extend along the axis to form central flanges, and gear-sleeve outer splines are distributed on the outer side walls of the central flanges. The synchronizing rings are of circular structures. The edge portion of one end face of each gear-ring conical ring outwards extends along the axis to form an outer flange. Conical-ring inner splines matched with the gear-sleeve outer splines are distributed on the inner side walls of the outer flanges. The outer side walls of the outer flanges are matched with the inner side walls of the synchronizing rings. According to the lock pin type synchronizer, as the areas of friction contact faces are increased, the synchronizing capacity can be increased, the synchronizing torque can be increased, and the aim of effectively improving the performance of the synchronizer can be achieved.

Description

technical field [0001] The invention belongs to the field of automobile transmissions, in particular to a lock-pin synchronizer in the automobile transmission. Background technique [0002] The lock pin type synchronizer generally first makes the circumferential speed of the gear sleeve and the ring gear cone ring consistent through the friction of the cone surface between the ring gear cone ring and the synchronizing ring, and then makes the gear sleeve and the combined teeth on the ring gear cone ring phase Engage to complete the synchronous shift process. In the existing pin-type synchronizers used in medium and heavy-duty automobile gearboxes, the coupling teeth (splines) of the conical ring of the ring gear are arranged at the largest outer circle. Under the limitation of its installation space, the conical ring of the ring gear The tapered surface is very small, so that a large enough synchronous torque cannot be obtained. To obtain a sufficiently large synchronous t...

AI Technical Summary

Problems solved by technology

In the existing pin-type synchronizers used in medium and heavy-duty automobile gearboxes, the coupling teeth (splines) of the conical ring of the ring gear are arranged at the largest outer circle. Under the limitation of its installation space, the conical ring of the ring gear The cone surface is very small, so that a large enough synchronous torque cannot be obtained

If you want to obtain a large enough synchronous torque, the cone ring of the ring gear often needs to be made into a double-cone structure, which not only increases the cost, but also increases the installation space and weight accordingly

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