Gap adjusting mechanism of gear rack steering gear for automobile

Abstract

The invention discloses a gap adjusting mechanism of a gear rack steering gear for an automobile. The gap adjusting mechanism comprises a shell body with a first axle hole and a second axle hole whichare mutually perpendicular, a gear set composed of a rack and a gear is arranged in the first axle hole, and an adjusting body is arranged in the second axle hole; the front end of the adjusting bodyabuts against the back of the rack, a slot hole is formed in the back end of the adjusting body, and a conical helical spring, an adjusting bolt and a locking nut are successively arranged in the slot groove; the conical helical spring sleeves the adjusting bolt, the adjusting bolt is in threaded connection with the shell body and the locking nut to make the conical helical spring pressed in theslot groove of the adjusting body, pressure is released by the conical helical spring in the pressing state, and the gap between the gear and the rack is adjusted. The mechanism is simple in structure, low in manufacturing cost, convenient and quick to install and good in adjusting performance, can effectively reduce the meshing gap of a steering gear assembly, and the performance of gaps, noises,vibration and the like of the gear rack steering gear is optimized.

Description

technical field [0001] The invention relates to a clearance adjustment mechanism of a rack and pinion steering gear for automobiles, belonging to the technical field of automobile steering. Background technique [0002] The rack and pinion steering system is a steering mechanism commonly used in cars and small trucks. It includes a rack and pinion gear set installed in a metal tube. together. A small gear is connected to the steering shaft. When the steering wheel of the car is turned, the steering gear rotates to make the gear rack meshed with it move along the axial direction. On the steering arm of the tie rod steering shaft at each tooth end of the rack, the rotation motion of the steering wheel is converted into the linear motion required by the wheel transmission through the rack, so that the left and right tie rods drive the steering knuckle to rotate left and right, and the steering wheel is deflected. The car turns. [0003] The position sense of the middle posit...

AI Technical Summary

Problems solved by technology

However, the existing gap adjustment and compensation system has poor stability and low comfort, and can only guarantee the normal meshing gap at the initial stage of vehicle operation. After a period of time, the adjustment effect is poor due to the influence of the wear amount of the adjustment body and the performance of the adjustment spring. , resulting in too large meshing clearance, looseness, abnormal noise, and poor return to alignment performance in the steering system of the car.

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