Transmission gear shifting fork mechanism

Abstract

The invention discloses a transmission gear shifting fork mechanism. The transmission gear shifting fork mechanism comprises a gear shifting fork assembly and a synchronizer assembly. The gear shifting fork assembly comprises a shifting fork shaft, a shifting fork connection sleeve and a shifting fork; the shifting fork of the gear shifting fork assembly is fixedly connected to the shifting fork shaft through the shifting fork connection sleeve; a web plate groove penetrates through the end portion of the shifting fork in a pulling manner in the length direction of the shifting fork, and a single web plate in a shape of a boss protrudes out of the middle portion of the side wall of the outer ring of a synchronizer gear sleeve of the synchronizer assembly; and the single web plate of the synchronizer gear sleeve is clamped into a notch of the web plate groove. The web plate groove is provided with a friction face in a drum shape; the drum shape height is a maximum value of swinging during running of the synchronizer gear sleeve; the single web plate on the synchronizer gear sleeve and the web plate groove in the shifting fork are matched, the axial space under a special shaft systemis reduced, the functional problems that due to damage of the shifting fork, the gear shifting stroke of the synchronizer gear sleeve is not in place, and tooth beating and spontaneous out-of-gear ofa transmission are caused are solved, manual shaking of a whole vehicle is lowered, and the gear shifting quality of the transmission is improved.

Description

technical field [0001] The invention relates to the field of transmissions, in particular to a transmission shift fork mechanism. Background technique [0002] The transmission shift fork mechanism of prior art sees Figure 1 to Figure 4 shown. The transmission shift fork mechanism includes: shift fork assembly 1 and synchronizer assembly 2. The shift fork assembly 1 is provided with a shift fork shaft 12, a shift fork connecting sleeve 13 and a shift fork 14, and the shift fork assembly 1 passes through the upper end 122 of the shift fork shaft and the lower end 121 of the shift fork shaft on the shift fork shaft 12. Slidingly connected to the shaft hole of the transmission case, the shift fork 14 is fixedly connected to the shift fork shaft 12 through the shift fork connecting sleeve 13, the end of the shift fork 14 is provided with a plastic sleeve 0141, and the synchronizer of the synchronizer assembly 2 The outer ring of the gear sleeve 21 is provided with a gear slee...

AI Technical Summary

Problems solved by technology

When shifting, the shift fork assembly 1 moves, driving the shift fork 14 to move, making the plastic sleeve 0141 contact with the upper and lower sides of the gear sleeve groove 0211 on the synchronizer gear sleeve 21, and pushing the synchronizer gear sleeve 21 to move and shift gears , due to the high-speed rotation of the synchronizer sleeve 21, accompanied by the inevitable deflection of the synchronizer sleeve 21 around the central axis, the upper and lower sides of the sleeve groove 0211 will be continuously knocked and unbalanced extrusion of the plastic sleeve 0141 The upper and lower friction surfaces eventually lead to cracking, crushing, falling off, and excessive wear of the plastic sleeve 0141, resulting in insufficient shift stroke of the synchronizer gear sleeve 21, resulting in functional problems such as gearing and gearing out of the transmission

[0003] At the same time, because the gear sleeve groove 0211 on the synchronizer gear sleeve 21 has two webs on the upper and lower sides, the interference between the two webs and the shafting system in the specific shafting space makes it impossible to install, and it can only be used by extending the axial space, which increases The overall weight of the transmission increases the manufacturing cost of the transmission and the fuel consumption of the whole vehicle

Images