| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of enhancing the durability of a bead part when the bead part is reinforced with a steel code reinforcing layer. SOLUTION: Bead cores 2 are embedded in a left and a right bead part 1, 1, and bead filler 3 is installed at the periphery of each bead core 2, and the two ends of a carcass layer 4 set over between the two bead parts 1 are turned up round the bead cores 2 from inside the tire to the outside, and also the reinforcing layer in which a plurality of steel codes are pulled in alignment is embedded in each bead part 1 along the carcass layer 4. In this pneumatic tire, the reinforcing layer consisting of steel codes is divided into an inner layer 5A and an outer layer 5B about each bead core 2 as the boundary, and the inner reinforcing layer 5A is arranged between the body part 4A of the carcass layer 4 and the bead filler 3, while the outer reinforcing layer 5B is arranged outside in the tire width direction more than the turned-up part 4B of the carcass layer 4. COPYRIGHT: (C)2004,JPO
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