| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire with improved durability of a bead part by optimizing disposition of a bead core and a carcass. SOLUTION: The tire is equipped with a pair of bead parts 4 having a plurality of bead cores 2, 3 embedded, and the carcass 5 composed of a carcass ply 5A extended in a toroidal shape between both bead parts 4. The bead part 4 is equipped with a first bead core 2 and a second bead core 3 positioned away from the outside in the tire width direction of the first bead core 2. The carcass ply 5A is equipped with a main body part 6 which is extended in a toroidal shape between both bead parts 4 toward the inside in the tire width direction of the first bead core 2, and a folded part 7 which is continued to the main body 6, folded along the first bead core 2 from the inside in the tire width direction toward the outside, and extended to the outside in the tire width direction passing between the first bead core 2 and the second bead core 3. The first bead core 2 is at the position to be pressed with respect to the second bead core 3 by the action of the tension applied to the carcass 5. COPYRIGHT: (C)2007,JPO&INPIT
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