| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enhance the durability of a bead part while a lightweight construction is established. <P>SOLUTION: The folded-back part 6b of a carcass ply 6A consists of a main folding part 10 where folding is made along the tire axial direction inner side face Si of the bead core 5, the radial direction inner surface SL, and the axial direction outer side face So, and an auxiliary folding part 11 extending apart from the bead core 5. The auxiliary folding part 11 extends in inclination toward the body part 6a at an angleθbelow 90°relative to the tire radial direction outer surface SU of the bead core 5, and includes at least in a part thereof steel cords SC1 penetrating among the steel cords of the body part 6a. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
