There are many types of automobile plastic parts steering gear, the more commonly used are rack and pinion type, worm-crank pin type, recirculating ball-rack and pinion type, recirculating ball crank pin type, worm roller type and so on.
The rack-and-pinion automobile steering gear is the most common, and its basic structure is a pair of pinions and racks that mesh with each other. When the steering shaft drives the pinion to rotate, the rack moves in a straight line. Sometimes, the tie rod is directly driven by the rack to turn the steering wheel. The rack-and-pinion automobile steering gear is simple in structure, low in cost, sensitive in steering, and small in size, and is widely used in automobiles.