Pneumatic tire

Abstract

The present application provides a pneumatic tire capable of ensuring the communication of a transponder and improving the driving stability and durability of the tire. In a pneumatic tire in which a carcass layer (4) has a structure in which the carcass layer (4) is rolled up around a bead core (5) from the inside to the outside of the tire, the end (4e) of a rolled-up part (4B) of the carcass layer (4) is disposed between a main body part (4A) of the carcass layer (4) and a belt layer (7), and a transponder (20) extending in the circumferential direction of the tire is embedded between the rolled-up part (4B) of the carcass layer (4) and a rubber layer. The rubber layer is disposed on the outer side of the carcass layer (4) in the sidewall portion, and the transponder (20) is disposed between a position (P1) 15 mm outward in the tire radial direction from the upper end (5e) of the bead core (5) and a position (P2) 5 mm inward in the tire radial direction from the tip (7e) of the belt layer (7).

Description

technical field [0001] The present invention relates to a pneumatic tire in which a transponder is embedded, and more particularly, to a pneumatic tire capable of ensuring the communication performance of the transponder and improving the driving stability and durability of the tire. Background technique [0002] In a pneumatic tire, it is proposed to embed an RFID tag (transponder) in the tire (for example, refer to Patent Document 1). When the transponder is embedded in the tire, for example, when the transponder is arranged between the carcass layer and the bead filler, the carcass line in the carcass layer is disturbed, and the driving stability of the tire is problematic. deterioration. In addition, depending on the position of the end of the rolled portion of the carcass layer, the distance between the transponder and the end of the rolled portion of the carcass layer may become extremely small, and the tire may be damaged starting from the transponder. Furthermore, ...

AI Technical Summary

Problems solved by technology

In the case of embedding the transponder in the tire, for example, when the transponder is arranged between the carcass layer and the bead filler, the carcass thread in the carcass layer is disturbed, and the driving stability of the tire deterioration

In addition, depending on the end position of the turn-up portion of the carcass ply, the distance between the transponder and the end of the turn-up portion of the carcass ply may become extremely small, and the tire may be damaged starting from the transponder.

Furthermore, when the transponder is arranged near a metal tire component (for example, a bead core, etc.), there is a problem that the tire component interferes with the transponder, and the communication performance of the transponder deteriorates.

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