Limiting device for manual transmission shifting fork

Abstract

The invention discloses a limiting device for a manual transmission shifting fork. The limiting device comprises a box body, a shifting fork shaft and a shifting fork, the shifting fork shaft is supported on the box body, a connecting clamping block is arranged on the shifting fork, a through hole is formed in the tail part of the shifting fork and is in sliding fit with the shifting fork shaft, the tail part of the shifting fork is further provided with an axial strip-shaped limiting groove, the length of the strip-shaped limiting groove is a gear-shifting travel distance, a limiting pin is arranged on the box body, one end of the limiting pin is inserted into the strip-shaped limiting groove and is in sliding fit with the limiting groove, so as to limit the movement of the shifting fork,a limiting boss is arranged at the tail of the shifting fork and the strip-shaped limiting groove is formed in the limiting boss, the limiting pin is a stepped shaft, the small-diameter section is apolished rod section inserted into the strip-shaped limiting groove, the middle-diameter section is matched with the threaded hole in the box body through the threaded section, and the large-diametersection is a screw cap for fixing the limiting pin, the limiting pin is made of steel and the shifting fork is made of an aluminum alloy material. According to the limiting device, the accumulative tolerance is avoided, the gear shifting effect is better, and the NVH performance of the transmission is not affected.

Description

technical field [0001] The invention relates to a shifting device of a manual transmission, in particular to a limiting device for a shift fork of a manual transmission. Background technique [0002] In the prior art, transmissions mostly use gear sleeves in contact with the end faces of gears to form an axial limit for the shift stroke. This limiting method involves many parts, because the gear sleeves and gears are all processed separately. , in the process of processing, there will inevitably be allowable processing errors. When these many parts are assembled together, the cumulative tolerance will increase, and it is easy to produce over-limits, which will affect the shifting effect and cause the vehicle to drive unsmoothly. , and even cause traffic accidents. At the same time, due to the impact of the gear sleeve on the gear, a large noise will be generated, which will affect the NVH performance of the transmission. Contents of the invention [0003] The object of t...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, transmissions mostly use gear sleeves in contact with the end faces of gears to form an axial limit for the shift stroke. This limiting method involves many parts, because the gear sleeves and gears are all processed separately. , in the process of processing, there will inevitably be allowable processing errors. When these many parts are assembled together, the cumulative tolerance will increase, and it is easy to produce over-limits, which will affect the shifting effect and cause the vehicle to drive unsmoothly. , and even cause traffic accidents

At the same time, due to the impact of the gear sleeve on the gear, it will also generate a large noise, which will affect the NVH performance of the transmission.

Images