Diaphragm type air suspension

Abstract

The invention discloses a diaphragm type air suspension. A system of the suspension consists of a damping element, an elastic element and a buffering stopper. The energy dissipation of the damping element part is realized by a shock absorber. The elastic element consists of an upper cover, a rubber plug, a guide piston and an airbag membrane. The upper end cover and a cover plate of an upper air chamber are filled up by sealant to achieve overall sealing of the air chamber. A connecting plate of a car body is welded to the upper part according to a structure of the car body. The shock absorber at the lower end is articulated with a lower swing arm. A damping bearing is fixed at the top of the shock absorber by an upper lock nut to absorb vertical torque and noise. The airbag is arranged on a housing of the air chamber and the guide piston by a snap ring, respectively. The rubber plug is fixed on the guide piston by a stabilization bar of the rubber plug and a support spring through an auxiliary partition of the air chamber. An upper rubber plug is fixed on the spring, while a clearing hole of a lower rubber plug is covered on the stabilization bar of the rubber plug. An upper guide piston is fixed on a fixed collar of the guide piston by a seal ring, and a fixed collar of the guide piston is welded on a proper position of the shock absorber. The buffering stopper is fixed on the shock absorber by a dead ring of the buffering stopper to prevent a collision of the shock absorber and the gas spring. According to the invention, the diaphragm type air suspension has the advantages of a compact structure, strong reliability and good durability, with good stiffness property to meet the amenity, the riding comfort and handling stability.

Description

technical field [0001] The invention belongs to the technical field of automobile suspension, and relates to a diaphragm type air suspension. Background technique [0002] With the development of society, people are no longer limited to the understanding of traditional cars. They put forward higher requirements on the weight reduction of the whole vehicle, driving comfort, noise reduction, and stable operation. As an important part of the car chassis, the suspension system has an important impact on the ride comfort, operating stability and comfort of the car. Air suspension uses air springs as elastic elements. It has excellent variable stiffness characteristics, low vibration frequency, and road friendliness. In recent years, it has been widely used in heavy vehicles and high-grade passenger cars. In order to solve the contradiction between comfort and operational stability, electronically controlled air suspension has also appeared. However, since passenger cars...

AI Technical Summary

Problems solved by technology

However, since passenger cars have higher requirements for suspension performance and relatively compact space, the design is more complicated and the cost is too high

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