Vehicle suspension fork with inertia energy accumulator

Abstract

The present invention relates to a vehicle suspension, which consists of an inertia accumulator, a spring and dampers. The spring (1) is connected in parallel to the damper (2); the inertia accumulator (3) is connected in parallel to the other damper (2); the two groups of parallel mechanisms are connected in series. In the structure, the inertia accumulator has the characteristics of ''high-frequency communication and low-frequency resistance''; the spring has the characteristics of ''low-frequency communication and high-frequency resistance''; the inertia accumulator and the spring are connected in series after being respectively connected in parallel to the damper, so as to absorb and damp the impact and vibration in the whole frequency domain caused by uneven road surfaces. The vehicle suspension can significantly improve the riding comfortableness under the premise that the dynamic load of the tire and the travel of the suspension are not increased.

Description

technical field [0001] The invention relates to a vehicle suspension, in particular to a vehicle suspension composed of an inertia accumulator, a spring and a damper. Background technique [0002] Traditional passive suspensions consist of springs and dampers whose main function is to ensure good ride comfort and stable tire loads. In addition, while the suspension performs this function, it must also control the suspension travel within the allowable range. Therefore, on the one hand, better ride comfort can be obtained by using soft springs; on the other hand, high ride comfort is always at the expense of the suspension working space, and it will also have a negative impact on driving safety. . This inconsistency is a difficult problem for suspension designers. Although active and semi-active suspensions developed in recent years can effectively alleviate this contradiction, the research on active suspensions is only at the theoretical stage due to complex structure, po...

AI Technical Summary

Problems solved by technology

Although active and semi-active suspensions developed in recent years can effectively alleviate this contradiction, the research on active suspensions is only at the theoretical stage due to complex structure, poor reliability, slow response, high energy consumption, and high cost. Practical still difficult

The active suspension in Chinese patent 200610172899.0 uses a motor actuator instead of a hydraulic actuator. Although it can reduce energy consumption in theory, its actual effect is still open to question, and the active suspension still cannot avoid complex structure, poor reliability, and poor response. Disadvantages such as slowness and high cost

Although the semi-active suspension in Chinese patent 02216189.9 has low energy consumption, the existence of the time lag problem limits its performance, and it will take a long time for commercialization

[0003] In addition, because the spring has the characteristic of "passing low frequency and blocking high frequency", the traditional passive suspension composed of only spring and damper can only buffer and attenuate high-frequency shock and vibration caused by road unevenness, but cannot filter out its low frequency part

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