| 摘要 |
A tire for a heavy goods vehicle comprises two beads and a carcass reinforcement comprising a main part (161) wrapped within each bead around a bead wire core (171, 172) to form a turned-back portion (162), each bead comprising an additional reinforcement (163) and a filler profiled element extending the bead wire core radially outwards. This filler profiled element has, in any meridian plane, a triangular cross section and is formed of a stack in the radial direction of at least two polymer materials (11, 12, 13) in contact along a contact surface that intersects any meridian plane along a meridian line (112, 123). The axially outermost end (E112, B123) of the meridian line of any contact surface for contact between two polymer materials of the filler profiled element is the radially outermost point on the meridian line, the axially innermost end (I112, I123) of the meridian line is the radially innermost point of the meridian line, the meridian line is at least partially radially on the outside of the straight line that passes through the two ends (E112, I112, E123, I123) of the said meridian line, and the elastic modulus of the polymer material (11) of the filler profiled element in contact with the bead wire core is greater than the elastic modulus of any other polymer material (12, 13) of the filler profiled element. |
