| 摘要 |
Tire (10) comprising two beads (20) and a carcass reinforcement (60) anchored in the bead, the bead comprising a plurality of annular reinforcing structures (70) arranged in such a way as to form at least one anchoring alignment (71, 72), parallel to a portion of the carcass reinforcement, the bead further comprising, in any radial cross section, an additional stiffening reinforcement (120) extending between a first end (121) situated a distance H1 from the tangent (130) to the seat-forming bead portion (22), the distance H1 being greater than or equal to 20% and less than or equal to 70% of the minimum distance H0 between the annular reinforcing structure of said at least one anchoring alignment that is closest to said tangent and the tangent, the distances H1 and H0 being measured perpendicular to said tangent, the first end lying an axial distance L1 from the interior surface of the tire, the axial distance L1 being greater than or equal to 50% and less than or equal to 85% of the maximum axial width L0 of the bead; and a second end (122), the second end being radially at the same level as or on the outside of the first end and axially at the same level as or on the outside of the first end, the second end being chosen such that the distance LA separating the first end and the second end is greater than or equal to 30% of the mean length of said at least one anchoring alignment of annular reinforcing structures, and wherein the additional stiffening reinforcement (120) is formed by one single alignment of at least two annular reinforcing structures (124).
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