McPherson automobile front suspension structure

Abstract

The invention relates to a McPherson automobile front suspension structure. The McPherson automobile front suspension structure comprises a spiral spring, a telescopic shock absorber, a lower swing arm, a steering knuckle and a shock absorber support. The telescopic shock absorber is sleeved with the spiral spring. The lower end of the steering knuckle is hinged to the end outside the lower swing arm through a lower ball head. The front suspension structure further comprises an inverted U-shaped support, two feet at the lower end of the inverted U-shaped support are arranged in a straddle mode and hinged to the lower swing arm, a vertical supporting plate and a transverse supporting plate are arranged at the upper end of the inverted U-shaped support, the vertical supporting plate stretches out upwards, and the transverse supporting plate stretches out of the outer side of an automobile body. The upper end of the steering knuckle is hinged to the tail end of the transverse supporting plate through an upper ball head, and the lower end of the telescopic shock absorber is fixed to the vertical supporting plate of the inverted U-shaped support through the shock absorber support. In the steering process of front wheels of an automobile, front supporting columns cannot rotate along with the front wheels, and therefore steering friction force can be reduced, wear-out failure of the front supporting columns is reduced, and the fatigue life of the front supporting columns is prolonged. In addition, the McPherson automobile front suspension structure further has the kingpin inclination angle adjustment function, and control stability and adjustment of the whole automobile can be achieved.

Description

technical field [0001] The invention belongs to the automobile driving system technology, and in particular relates to a McPherson type automobile front suspension structure. Background technique [0002] Suspension is the force transmission connection device between the frame (or load-bearing body) and the axle (or wheel). Its function is to apply the vertical reaction force (support force) and longitudinal reaction force (traction force and Braking force) and lateral reaction force and the moments caused by these reaction forces must be transmitted to the frame (or load-bearing body) to ensure the normal driving of the car. Suspension, as one of the main components of a car, affects the car's ride comfort, handling stability, passability and other performances, and is an important field of car design and research. [0003] The form of automobile suspension is divided into two types: non-independent suspension and independent suspension. [0004] The wheels of the non-ind...

AI Technical Summary

Problems solved by technology

[0009] (1) In the traditional MacPherson suspension structure, since the lower end of the barrel shock absorber is fixedly connected to the upper end of the steering knuckle through the shock absorber bracket, there is no relative movement between the two, the steering knuckle rotates, and the front strut Following the rotation, the axis of the steering kingpin is the line connecting the upper end of the front pillar and the ball pin at the lower swing arm. Therefore, during the steering process of the front wheels of the car, the front pillar (including the barrel shock absorber and the coil spring) will Rotate with it, which increases the steering friction, increases the complexity of the force of the coil spring, accelerates the wear and failure of the front pillar, and increases the abnormal sound mode of the front pillar

[0010] (2) The traditional MacPherson suspension structure can only adjust the toe-in value in the middle of the four-wheel alignment through the steering rod, and cannot adjust the kingpin inclination angle

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