Shock absorber with negative stiffness characteristic and vehicle adopting shock absorber

By installing tension and compression valves in the shock absorber and controlling the damping force using piston stroke and spring force, the problem of inaccurate control of the shock absorber's damping force and its matching with the vehicle's support spring is solved. This achieves automatic adjustment and performance quantification of the shock absorber's damping force, improves the damping effect, and reduces cavitation effects and temperature influences.

CN223563363UActive Publication Date: 2025-11-18陈刚
0 Cites 1 Cited by

Patent Information

Application Number
CN202423089532.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Priority Date
2024-11-16
Filing Date
2024-12-15
Publication Date
2025-11-18
Estimated Expiration
2034-12-15

AI Technical Summary

Technical Problem

The damping force of existing shock absorbers cannot be accurately controlled according to the actual stress conditions of the vehicle. Furthermore, the structural design results in high fluid velocity and cavitation effect, which affects the damping effect. There is a lack of matching methods with the vehicle's support springs, and the correlation between damping force and speed is biased, making it impossible to quantify the vibration reduction performance.

Method used

By installing a tension valve and a compression valve in the shock absorber, the damping force value is controlled by the piston's stroke position and the change in spring force. When the piston moves up or down, the change in the spring's force state forms a damping valve, realizing the correspondence between the damping force and the stroke, increasing the fluid flow diameter, avoiding cavitation effect, and matching the stiffness of the shock absorber and the support spring.

Benefits of technology

It achieves automatic adjustment of the damping force of the vibration damper, reduces the influence of speed on damping, improves the vibration reduction effect, solves the problems of performance quantification and matching, avoids the influence of temperature, and enhances the performance stability of the vibration damper.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The shock absorber with the negative stiffness characteristic comprises a cylinder barrel, a piston rod, a piston and a bottom valve, a stretching valve and a one-way valve are arranged on the piston, a compression valve and a one-way valve are arranged on the bottom valve, a valve element of the compression valve is connected to a valve element of the stretching valve through a spring, and a limiting device of the valve element of the stretching valve is arranged on the piston or the piston rod. Damping force values of the compression valve and the stretching valve are both controlled by the stroke of the piston and the acting force of the spring. In the stretching process of the shock absorber, when the spring is in a pressed state, the stretching valve forms damping force, and the shock absorption effect is achieved. The larger the compression stroke (compression force value) of the spring is, the larger the tensile damping value of the shock absorber is. In the compression process of the shock absorber, when the spring is in a pulled state, the compression valve forms damping force, and the shock absorption effect is achieved. The larger the stretching stroke (stretching force value) of the spring is, the larger the compression damping value of the shock absorber is.
Need to check novelty before this filing date? Find Prior Art