| 摘要 |
PURPOSE:To prevent stress concentration to the edge and generation of crack, in the radial tire for bus and so forth, by locating the entrainment edge of a reinforcing layer provided at the outside of a bead core winding edge of a body ply on the diameter inside direction and on the side near the body ply through a curved part. CONSTITUTION:A reinforcing layer 7 is arranged by winding a bead core 5 at the outside of a winding part 6B of the bead core 5 of a body ply 6. The entrainment edge 7C of this reinforcing layer 7 is located in the diameter inside direction and on the side near the body ply 6 through a curved part 7B. In this way the entrainment edge 7C is put between the inner side entrainment part 7A and the body ply 6, bounce is restrained and crack based on stress concentration can be prevented.
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