Steering Gear Pressing Device

Abstract

The invention discloses a steering gear pressing device comprising a pressing block, an adjusting block, an adjusting wheel and a screw plug, wherein an abutting surface is formed at one end of the pressing block, an open accommodating chamber is formed at the other end of the pressing block, and the abutting surface is in a concave arc shape; the adjusting block is located in the accommodating chamber and has a first faying surface; a second faying surface is formed at one end of the adjusting wheel, a lead screw is formed at the other end, the second faying surface extends into the accommodating chamber and fits and is matched with the first faying surface, and the lead screw is sleeved with a spring; the screw plug is provided with a through hole, an internal thread is disposed in the through hole and spirally connected with the lead screw, the outer wall of the screw plug is provided with an external thread, the screw plug and the adjusting wheel jointly abut against the spring, and the screw plug also abuts against the pressing block. According to the steering gear pressing device, the spring abuts against the pressing block, so that moving compensation can be performed duringabrasion, and the pressing on a rack is ensured. Therefore, the noise and vibration caused by increased clearance are avoided.

Description

technical field [0001] The invention relates to a steering gear pressing device. Background technique [0002] At present, automobiles have higher and higher requirements for noise, vibration, and harshness (NVH) performance, and the noise problem when each system is working has become the key to evaluating vehicle quality. Steering system is one of the important systems of automobile chassis. [0003] Noise level has gradually become the focus of attention of OEMs. Due to the direct mechanical contact between the pressing block and the rack, and frequent friction, wear and tear will inevitably occur at the contact between the pressing block and the rack, resulting in gaps. In order to reduce the amount of wear, the back of the rack is usually heat-treated, or carburized or nitrided to increase its surface hardness and reduce friction. In the groove of the compact, the powder metallurgy process is used to reduce friction and reduce wear. [0004] Although the above-menti...

AI Technical Summary

Problems solved by technology

[0004] Although the above method of reducing wear is used, wear cannot be avoided. As the amount of wear increases, the gap between the pressure block and the rack increases, which leads to noise and vibration.

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