Electromagnetic valve assembly, shock absorber and vehicle suspension system

Abstract

The invention discloses a shock absorber. The shock absorber comprises an inner cylinder tube, a middle cylinder tube, an outer cylinder tube, a piston rod, a piston valve assembly, a bottom valve assembly and an electromagnetic valve assembly. The middle cylinder tube is arranged between the inner cylinder tube and the outer cylinder tube. The piston valve assembly is installed at one end of the piston rod and stretches into the inner cylinder tube. The bottom valve assembly is installed at the lower end of the inner cylinder tube. The upper end of the inner cylinder tube is provided with an oil through hole and communicates with the middle cylinder tube. The electromagnetic valve assembly comprises a valve body, a valve seat, a coil, an armature, a valve element and a first spring. The valve body is connected to the middle cylinder tube, and the valve seat is connected to the outer cylinder tube. A first oil hole is formed in the valve body, and a second oil hole is formed between the valve body and the valve seat. The valve body is provided with a perforation hole, and the valve element is arranged in the perforation hole. The valve element is provided with an overflow groove, and the overflow groove is matched with the inner wall of the perforation hole to form a throttle hole. The first spring is arranged at one end of the valve element. The coil can generate electromagnetic force with the armature when being powered up. The armature pushes the valve element to move in the perforation hole under the action of the electromagnetic force and compresses the first spring, and the first oil hole and the second oil hole can communicate with each other through the overflow groove so that damping force of the shock absorber can be made continuous and changeable.

Description

technical field [0001] The invention relates to a vibration damping system of a vehicle, in particular to a solenoid valve assembly, a shock absorber with the solenoid valve assembly, and a vehicle suspension system using the shock absorber. Background technique [0002] Shock absorber is an important part of the vehicle's vibration reduction system, and its design quality directly affects the handling stability and ride comfort of the vehicle. The damping force value of ordinary shock absorbers is generally not adjustable. It is often a compromise between handling stability and comfort during the adjustment process. Therefore, ordinary shock absorbers cannot guarantee the suspension well under different road conditions. The damping characteristics of the system get the best performance, and the handling stability and ride comfort cannot be taken into account at the same time. [0003] The Chinese utility model patent with the authorized announcement number CN203685960U dis...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a solenoid valve assembly, a shock absorber and a vehicle suspension system to solve the problem that the existing shock absorber cannot adjust the damping force of the shock absorber according to the requirements during the operation of the vehicle, and cannot take into account the handling stability at the same time and ride comfort

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