Damping and stiffness-adjustable tire

Abstract

The invention relates to the technical field of automobile part structures, and in particular to a damping and stiffness-adjustable tire. The tire comprises an inner tread and an outer tread which areradially arranged at intervals from inside to outside, wherein a plurality of damping and stiffness-adjustable adjustment units are arranged between the inner tread and the outer tread; each adjusting unit comprises an airtight shell filled with liquid; both ends of each airtight shell are respectively fixed on the inner tread and the outer tread; a throttling device is arranged in the shell to divide the shell into a first cavity, the inner cavity volume of which is not variable, and a second cavity, the inner cavity volume of which is variable; and a third cavity, the inner cavity volume ofwhich is variable, is arranged in the first cavity. The tire has the advantages that according to the specific working condition of the tire, the stiffness and damping characteristics of the entire tire are actively adjusted by controlling the medium fluidity among the cavities, so that the purposes of quickly and effectively mitigating the system impact, attenuating the system vibration and improving the system performance are achieved; and meanwhile, the tire is simple in structure and the active control is easy to implement.

Description

technical field [0001] The invention relates to the technical field of auto parts structures, in particular to a tire with adjustable damping and stiffness. Background technique [0002] Tires are key components in the driving system of modern vehicles. They have the functions of bearing loads, generating driving force and braking force, buffering and damping, and changing the driving direction of the car. The buffering and shock absorbing functions are usually combined with elastic elements and damping elements. The suspension system is realized together. With the progress of society and the continuous development of technology, the user's demand for vehicle comfort is also increasing. In order to meet this demand, on the one hand, for ordinary suspension systems, the elastic characteristics and damping characteristics are constantly optimized and improved. At the same time, it is also This makes the system more and more complex, and the reliability is difficult to guarant...

AI Technical Summary

Problems solved by technology

With the progress of society and the continuous development of technology, the user's demand for vehicle comfort is also increasing. In order to meet this demand, on the one hand, for ordinary suspension systems, the elastic characteristics and damping characteristics are constantly optimized and improved. At the same time, it is also This makes the system more and more complicated, and the reliability is difficult to guarantee; on the other hand, many active suspension systems have emerged as the times require, but the high carrying cost, large occupied space and too complicated structure make it difficult to popularize at this stage

[0003] In order to solve this problem, someone has proposed a tire with variable stiffness to achieve damping and stiffness adjustment. For example, the patent named "Magnetorheological Elastomer Variable Stiffness Tire" with the patent No. "CN201420716344.8" is to fill the tire with The single magnetorheological medium is used as an elastic body. The magnetorheological medium can adjust its elastic properties by changing the magnetic field strength to achieve the purpose of changing the overall elasticity of the entire tire. However, the minimum stiffness of the magnetorheological medium is a completely flowing liquid state. Liquids are less compressible and therefore less rigid

[0004] There is also a patent with the patent number "CN201510661123.4" named "vibration damping device for automobile wheels", which simply damps the vibration of the wheel by changing the damping of the tire assembly; the patent number is "CN102085776(B)" The patent named "Magnetic Fluid Non-Air Tire" is realized by modifying the magnetorheological fluid through the single magnetorheological medium filled with the tire as an elastic body; The patent of WITH ADJUSTABLE PROPERTIES” is to adjust the internal space of the tire through a structure similar to a shock absorber to change the performance of the tire; the above patents have a limited degree of adjustment to the tire, and the scope of application is small, and it does not greatly improve the handling and comfort of the vehicle. Carry out wide-scale promotion and use

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