Gearshift guide assembly having clearance compensation function

Abstract

The invention discloses a gearshift guide assembly having a clearance compensation function. The gearshift guide assembly includes a gearshift guiding axle, a first bearing, a gearshift worm gear shaft gear, a gearshift guiding axle worm gear, a second bearing and a torsional damper assembly. The torsional damper assembly includes a damper left cover, a damper right cover and a torsional damper back-up ring which are successively arranged from left to right. A plurality of cylindrically helical springs which are evenly distributed in a circumferential arrangement are installed inside a plurality of installation cavities via pretightening force, and the plurality of installation cavities are correspondingly formed inside the damper right cover. A plurality of lightening holes are arranged between the plurality of installation cavities and a plurality of guide shafts. The damper left cover buckles the torsional damper back-up ring after passing by the damper right cover. The outer diameter of each cylindrical helical spring is greater than the cavity depth of each installation cavity, so that when a plurality of left cavity bodies and a plurality of right cavity bodies rotate with respect to the plurality of installation cavities, the side walls of the left cavity bodies and the right cavity bodies can compress the plurality of cylindrical helical springs. When outer teeth of the gearshift worm shaft gear begin to show the sign of wear, the clearance caused by the wear can be automatically compensated for so as to achieve clearance-free engagement between the shift worm gear shaft gear and a gearshift rod.

Description

technical field [0001] The invention relates to the technical field of transmissions, in particular to a shift guide assembly with a backlash compensation function. Background technique [0002] The transmission shift guide assembly usually consists of a shift guide shaft, a first bearing, a shift worm shaft gear, a shift guide shaft worm gear and a second bearing that are sequentially set on the shift guide shaft from left to right. The first bearing and the second bearing are press-fitted on the shift guide shaft, and are used for installation at both ends of the shift guide shaft. The worm gear of the shift guide shaft is fixedly set on the shift guide shaft. The worm gear of the shift guide shaft meshes with the right end of the shift worm shaft gear through internal and external teeth, thereby transmitting power to drive the shift worm shaft gear to rotate, and the shift worm shaft gear drives The shift lever moves, and the shift fork moves through the shift lever to r...

AI Technical Summary

Problems solved by technology

[0003] The main problem with this structure is that during use, the outer teeth of the shifting worm gear are prone to wear and tear. Once worn, the shifting worm gear needs to be replaced frequently to ensure normal shifting, and the cost of use is high. and very troublesome

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