Regulation mechanism for pinion and rack steering gear

Abstract

The invention discloses a regulation mechanism for a pinion and rack steering gear and belongs to the field of automobile steering. The mechanism comprises a pressure block, a regulating bolt and a locking nut, wherein the pressure block is arranged in a shell of the steering gear and is contacted with a rack of the steering gear; the regulating bolt is used for positioning the pressure block in the shell; and the locking nut is used for locking the regulating bolt. The regulation mechanism is characterized in that a mounting rack is arranged on the contact end face of the pressure block and the rack; rollable steel balls are arranged on the mounting rack; and the pressure block is contacted with the rack by the steel balls. According to the invention, by the arrangement of the rolling balls, the original sliding friction between the pressure block and the rack is converted into the rolling friction, so that the axial movement of the rack is reduced, the wear to the pressure block is also reduced, the gap requirement of a pinion and the rack can be met to the greatest extent and the comfort of the steering gear is improved; and the abrasion loss of the pressure block is reduced, the noise generated by the pressure block is correspondingly reduced and the regulation mechanism has an obvious improving effect on the noise level of a finished automobile.

Description

technical field [0001] The invention relates to the field of automobile steering, in particular to an adjusting mechanism of a rack and pinion steering gear. Background technique [0002] The rack and pinion steering gear in the prior art includes: a gear; a rack installed in the steering gear housing and moving along the axial direction; a steering tie rod is installed at both ends of the rack; Dust cover. figure 1 It specifically shows a structural schematic diagram of a rack and pinion steering gear adjustment mechanism in the prior art, in which the housing 1, the gear shaft 2 installed in the housing 1, and the gears on the gear shaft 2 are shown. The meshing rack 3, the adjustment mechanism includes a pressure block 4 that is in contact with the rack 3 and presses the rack 3 so that the gear is constantly meshing with the rack 3, a spring 5 located between the pressure block 4 and the adjustment bolt 6, and a spring 5 located between the adjustment The lock nut 7 at ...

AI Technical Summary

Problems solved by technology

[0005] Due to the combined structure of the traditional briquetting block, it is necessary to consider the dimensional fit between the metal base material and the wear-resistant material inside the briquetting block. The dimensional accuracy requirements are relatively high, and the processing of the parts is also relatively complicated; the wear-resistant material falls off or the coating peels off, And wear-resistant material damage will directly affect the handling performance of the steering gear, so the reliability requirements are high; and the impact between the metal base material and other parts inside the steering gear is prone to noise, and wear-resistant material damage will also cause noise, affecting the overall performance of the vehicle. Noise Level and Comfort

[0006] To sum up, the traditional rack and pinion steering gear adjustment mechanism has complex structure, complex manufacturing process, high cost and poor reliability.

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