Pneumatic tire

Abstract

Provided is a pneumatic tire that enables, even if a sound absorbing material is provided to the inner surface of the tire, a puncture to be repaired without the flow of a puncture repairing liquid being impeded by the sound absorbing material and by a fixation means therefor. Along with a sound absorbing material 10 provided to the inner surface of a tread portion 1 through a sheet material 12, at least a pair of first fixation regions A1 at which the sheet material is fixed to one of the inner surface of the tire or the sound absorbing material 10, are provided to portions in the tire width direction of the sheet material; a non-fixation region B at which the sheet material is not fixed to the one of the inner surface of the tire or the sound absorbing material 10, is provided between the pair of first fixation regions A1; a second fixation region A2 at which the sheet material is fixed to the other of the inner surface of the tire or the sound absorbing material 10, is provided to at least a portion of the non-fixation region B; and a repairing liquid introduction part 13 which allows communication between a tire inner cavity C and a closed space D separated, in a meridian cross section, from the tire inner cavity C by the inner surface of the tire or the sound absorbing material 10 and the non-fixation region B of the sheet material, is provided to the sheet material.

Description

technical field [0001] The present invention relates to a pneumatic tire provided with a sound-absorbing member on the inner surface of the tire. More specifically, it relates to a pneumatic tire capable of puncture repair without being hindered by the sound-absorbing member and its fixing means. . Background technique [0002] In recent years, as a method of reducing tire noise (in particular, cavity resonance sound caused by vibration of air filled in a cavity (tire cavity) formed in the tire when the rim is assembled), it has been proposed to reduce tire noise in the tire cavity. A plan to install sound-absorbing materials made of porous materials such as sponge. For example, in the example of patent document 1, the sound absorbing material which consists of sponge materials is stuck to the inner surface of a tread part with an adhesive agent or a double-sided tape. [0003] On the other hand, when a tire mounted on a vehicle is punctured, the puncture is repaired urgen...

AI Technical Summary

Problems solved by technology

However, in the pneumatic tire provided with the sound absorbing material as described above, when the same puncture repair work is to be performed, depending on the installation form of the sound absorbing material, the sound absorbing material itself and the parts used to fix the sound absorbing material to the inner surface of the tire may be damaged. Fixing member obstructs flow of puncture repair fluid to prevent proper repair work

For example, in the example of Patent Document 1, when a failure such as a puncture occurs in the portion of the tread portion where the sound absorbing material is installed, there is a possibility that the sound absorbing material closely attached to the inner surface of the tread may hinder the puncture repair fluid. Flowing and punctured repair fluid cannot reach the faulty part.

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