Helical spring with arc center line and independent suspension structure

Abstract

The invention relates to a helical spring with an arc center line and an independent suspension structure. The helical spring comprises a helical spring body, the center line of the helical spring body is a straight line, a bending section helical spring is arranged at the lower end of the helical spring body, and the center line of the bending section helical spring is a circular arc curve; the independent suspension structure comprises the helical spring, an auxiliary frame, a lower swing arm bush, a lower swing arm steering joint, a shock absorber and a rubber cushion. The radius R of the circular arc curve is equal to the distance from the intersection point of the center line of the helical spring and the swing arm mounting surface to the swing arm rotation center, and the center of an arc is on the center line of the lower swing arm bush; in this way, a tangent line of the circular arc curve at the intersection point is perpendicular to the helical spring mounting surface of the lower swing arm all the time, when a swing arm moves up and down and the helical spring stretches or is compressed, no included angle is formed between the tangent line of the contact point of the circular arc curve and the helical spring mounting surface and a normal line of the mounting surface, and the problems of abrasion, abnormal sounds and the like in the moving process are eliminated.

Description

technical field [0001] The invention belongs to the technical field of suspension, in particular to a coil spring with a circular center line and an independent suspension structure. Background technique [0002] The car suspension is an elastically connected part between the body (or frame) and the wheel. Suspension is one of the important components of a car. Its main function is to transmit the torque and torque acting on the wheels, and to buffer the impact of the road on the vehicle, so as to ensure the ride comfort and handling stability of the vehicle. [0003] The most important component in the suspension is the spring. There are many types of springs. Among them, coil springs are widely used in passenger cars and commercial vehicles. About 80% of the elastic components in the suspension of passenger cars are coil springs. The diameter, wire diameter, number of turns, height, pitch, etc. of the coil spring directly affect the performance of the coil spring. [000...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a coil spring with a circular arc center line and an independent suspension structure to solve the problems that the coil spring produces lateral force on the mounting surface, resulting in abnormal noise, surface wear, and uneven force on the coil spring.

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