Automobile rear motor type connecting rod integrated rear axle suspension

Abstract

The invention provides an automobile rear motor type connecting rod integrated rear axle suspension comprising an integrated rear axle shell body. A guide mechanism is arranged on the integrated rear axle shell body. The integrated rear axle shell body includes an axle shell, a cover body, and axle shaft sleeves arranged at the two ends of the axle shell and connected with wheels. The guide mechanism includes a longitudinal connecting rod mechanism arranged on the side walls of the two ends of the axle shell and a transverse connecting rod mechanism arranged on the upper end of the axle shell. The automobile rear motor type connecting rod integrated rear axle suspension further comprises shock absorbers which are longitudinally arranged at the two sides of the axle shell, and elastic elements which sleeve the shock absorbers respectively. The shock absorbers are disposed at the back of the guide mechanism. According to the invention, the longitudinal and transverse connecting rods of the guide mechanism bear the longitudinal force and transverse force in the running process of an automobile body, and the elastic elements and the shock absorbers jointly bear vertical load. Therefore, the dynamic unsprung mass is reduced, the dynamic sprung mass is increased, kinetic energy is released effectively, and the smoothness and comfort of a whole automobile are improved.

Description

technical field [0001] The invention relates to the technical field of an automobile chassis suspension system, in particular to an automobile motor rear-mounted connecting rod integral rear axle suspension. Background technique [0002] Suspension is the general term for all force transmission connection devices between the vehicle frame (or load-bearing frame) and the axle (or wheel). The main function of the suspension is to transmit all the forces acting between the wheel and the frame. And moments, such as supporting force, braking force and driving force, etc., and ease the impact load transmitted to the frame by the uneven road surface, attenuate the vibration caused by it, ensure the comfort of the occupants, and reduce the dynamic load of the cargo and the vehicle itself. A typical automobile suspension structure is composed of elastic elements, shock absorbers, and guide mechanisms. These three parts play the roles of buffering, vibration reduction, and force trans...

AI Technical Summary

Problems solved by technology

[0003] There are two main forms of non-independent suspension: 1) longitudinal leaf spring type integral rear axle non-independent suspension; this suspension form has poor performance in easing and attenuating the shock and vibration in the vertical direction of the wheel when passing through uneven roads , which greatly affects the ride comfort and ride comfort of the vehicle, and the vehicle noise, vibration and harshness (Noise, Vibration, Harshness, referred to as NVH) performance is very low

In addition, the integral rear suspension structure has the problem of "axle steering". If the fixed hinge end of the longitudinal leaf spring suspension is not properly arranged, it will cause the vehicle to oversteer and affect the driving safety of the vehicle.

2) The trailing arm type integral rear axle non-independent suspension in which shock absorbers and coil springs are arranged longitudinally and symmetrically. The suspension form is relatively simple. The spring only bears the vertical load, so the suspension structure has poor anti-roll performance, which also affects the ride comfort and safety of the vehicle

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