A variable diameter wheel hub

Abstract

The invention relates to a variable-diameter wheel hub which comprises a central control cabinet and a plurality of identical retractable hub blocks. The various retractable hub blocks can be driven by retractable spoke assemblies, so that the diameters of the various retractable hub blocks can be radially varied; each retractable spoke assembly comprises a variable-damping retraction actuating mechanism and an extension auxiliary spring, and each extension auxiliary spring sleeves the outer wall of the corresponding variable-damping retraction actuating mechanism; a body of each variable-damping retraction actuating mechanism is a double-piston cylinder barrel, spaces between floating pistons and end walls of barrel walls are filled with high-pressure nitrogen, and a space between each floating piston and another end wall of the corresponding barrel wall is filled with magnetorheological fluid materials; an electromagnetic coil is buried in each working piston, and a circle of throttle holes are formed in each working piston in a buried manner; one end of each wire is communicated with the corresponding electromagnetic coil, and the other end of each wire is communicated with a storage battery. The variable-diameter wheel hub has the advantages that the diameter of the variable-diameter wheel hub can be varied by the aid of the dead weight of an automobile and centrifugal force generated when a wheel runs, extra driving devices can be omitted, the viscosity of magnetorheological fluid can be controlled by the aid of only low currents, and accordingly the variable-diameter wheel hub is low in energy consumption and fast in response; the riding comfort and the obstacle crossing ability are taken into account, and accordingly the variable-diameter wheel hub and non-inflatable tires can be matched with one another to be applied to conventional vehicles, motorcycles, wheelbarrows and the like.

Description

technical field [0001] The invention relates to a wheel hub, in particular to a wheel hub with a variable diameter that can be used in automobiles, motorcycles and unicycles and is suitable for various road conditions. Background technique [0002] Cars are playing an increasingly important role in people's lives. With the improvement of living standards, people have higher requirements for car functions. Generally speaking, the diameter of the wheels of ordinary cars and sports cars is small, which can lower the vehicle's center of gravity and increase the wheel torque. However, for areas with poor road conditions, vehicles with small diameter wheels have poor passability. On the contrary, the wheels of off-road vehicles and SUV models are larger, which can effectively meet the passing performance of vehicles under harsh road conditions, but the handling stability and acceleration performance of such models are not as good as vehicles with small-diameter wheels when driving...

AI Technical Summary

Problems solved by technology

Generally speaking, the wheels of ordinary cars and sports cars have small diameters, which can lower the vehicle's center of gravity and increase the wheel torque, but for areas with poor road conditions, vehicles with small diameter wheels have poor passability

On the contrary, the wheels of off-road vehicles and SUV models are larger, which can effectively meet the passing performance of vehicles under harsh road conditions, but the handling stability and acceleration performance of such models are not as good as vehicles with small-diameter wheels when driving on urban roads.

[0003] In the current patents related to variable-diameter wheels, a direct driving force is required to change the diameter, and when the diameter becomes larger, the driving force required to raise the vehicle body is larger, which increases energy consumption; and the existing Most of the inventions of variable-diameter wheels can only be changed in a static state, and cannot be changed in real time during driving; secondly, most of the current variable-diameter wheels are designed for special exploration vehicles, which cannot meet the driving comfort during high-speed movement , so it cannot be applied to ordinary passenger cars, motorcycles, and wheelbarrows

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