Run-flat tire

Abstract

The invention relates to the field of tires, in particular to a run-flat tire. The run-flat tire comprises a tire bead, wherein the tire bead is internally filled with triangular rubber; a bead ring is arranged at the bottom end of the triangular rubber; a tire body layer is arranged around the tire bead; the tire body layer is turned back from the inner side to the outer side of the tire; a belt beam layer is arranged on the outer side of the tire body layer in the radius direction and inside a tire tread part; a tire sidewall supporting rubber layer is arranged between the tire body layer at a tire sidewall and a lining layer; and a tire bead reinforcing layer is arranged on the side surface of the tire bead. Compared with the ordinary run-flat tire, the run-flat tire disclosed by the invention has the advantages as follows: the hardness of tire sidewall supporting rubber is relatively reduced, so that the driving comfort is optimized to a certain extent; under the condition of the same rigidity, the thickness of the tire sidewall supporting rubber is reduced, so that the weight reduction of the tire is facilitated; during to reinforcement of a reinforcing material on a seam allowance position, the flexible deformation of the seam allowance position is relatively small in a run-flat state, and in combination with the reduction in the thickness of the supporting rubber, heat generation at the tire sidewall is reduced and heat dissipation is facilitated, so that improvement on the durability of the tire is facilitated.

Description

technical field [0001] The invention relates to the field of tires, in particular to a run-flat tire. Background technique [0002] Tires are very important to the safety of the car. Once the tire leaks, it will deform and shrink, the car will lose its balance, and the driver cannot control the direction and braking, which can easily lead to traffic accidents, especially when driving at high speeds. Therefore, maintaining the normal tire pressure of the car tires is very important for the safe driving of the car. Many tire manufacturers are aware of this problem and have invested in the research of run-flat tires. [0003] The so-called run-flat tires refer to car tires that can still travel a certain distance at a set speed when the car is punctured and the tire pressure drops to zero. Generally, when the tire loses tire pressure, the tire can be separated from the hub like mud in the blink of an eye, and only the hub can contact the ground. The biggest difference betwee...

AI Technical Summary

Problems solved by technology

[0007] The self-supporting solution is mainly to add a certain thickness of supporting rubber on the sidewall to support the vehicle load when the tire is deflated. Fuel consumption increases, and under normal inflation conditions, the tires are very rigid and the driving comfort is poor

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