Run-flat tire

Abstract

The invention discloses a run-flat tire which comprises an outer tube 1, an inner tube 2 and a hub 3, wherein the inner tube is arranged inside the outer tube and is an inflatable protective layer; a rubber isolating layer is arranged at the outer side of the inner tube; an inflation nozzle 21 is arranged on the inner tube; a contact layer 14 is arranged on the outer surface of the outer tube; at least one cavity 11 is formed inside the outer tube 1; separators 13 are arranged in the cavities 11; the whole annular cavity 11 is isolated into independent cavities by the separators 13; and each independent cavity is filled with a protective layer 12. With the adoption of the technical scheme, the run-flat tire disclosed by the invention has the advantages that the inflatable inner tube can be prevented from being punctured by foreign matters, and the service life of the whole tire is prolonged, so that the fun flat prevention effect of the novel tire is greatly improved; and even if the inflatable inner tube is punctured by the foreign matters, or one independent cavity is damaged, normal driving of the vehicle can be guaranteed by an external carbon fiber meshed structure, and the center of gravity of the vehicle can be prevented from being immediately changed.

Description

technical field [0001] The invention relates to automobile components, in particular to the structural design of automobile tires. Background technique [0002] The rubber inner tube was once widely used as an air seal in various vehicles. The outer tire was inflated by inflating the inner tube. At this time, the rubber inner tube was tightly pressed against the inner surface of the outer tire by the inner air pressure. When the vehicle was running, the pressure contact made the inner and outer tires There is a large friction force between them, especially for high-speed vehicles. This friction force not only causes the tire to heat up, but even causes the inner tube to break and burst; Accidental factors have the danger of tires losing pressure in an instant, that is, a tire blowout, which will cause an immediate change in the center of gravity of the vehicle, and an instant loss of control of the steering wheel will cause the vehicle to lose control. It will bring great d...

AI Technical Summary

Problems solved by technology

[0002] The rubber inner tube was once used as an air seal widely used in various vehicles. The outer tire is inflated by inflating the inner tube. At this time, the rubber inner tube is tightly pressed against the inner surface of the outer tire by the inner air pressure. When the vehicle is running, this pressure contact makes the inner and outer tires There is a large friction force between them, especially for high-speed vehicles. This friction force not only causes the tire to heat up, but even causes the inner tube to break and burst; Accidental factors have the risk of tires losing pressure or blowing out instantly, resulting in an immediate change in the center of gravity of the vehicle, and a momentary loss of control of the steering wheel, which will cause the vehicle to lose control

It will bring great danger to drivers and passengers; according to statistics, 46% of traffic accidents in my country are caused by tire failures, of which 80% are due to blowout, and death occurs when the speed exceeds 160 kilometers per hour. The rate is close to 100%; although in the process of making tires, some tires add some tensile and explosion-proof objects such as steel wires inside the rubber, but the effect is not obvious, especially for the blowout caused by foreign objects stuck into the tire. little

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