| 摘要 |
<p>The invention relates to a tyre comprising sidewalls connecting a crown portion with beads (1) which are intended to come into contact with a mounting rim (J), said sidewalls comprising a carcass reinforcement (2) which is anchored in each bead (1) to at least one bead core (7) and which has one end (A) in each bead. Viewed in meridian cross-section, the bead core (7) has an external profile comprising two profile parts, namely: a first radially-inner part with axial width L which extends between the axially innermost point (B2) and the axially outermost point (B1), and a second radially-outer part between points B1 and B2. Each bead comprises at least one additional coupling reinforcement (5) which is in contact with the carcass reinforcement (2). The tyre is characterised in that, in each bead viewed in meridian cross-section, (i) the carcass reinforcement (2) is partially wound around the bead core (7) and is such that the end (A) thereof is positioned axially between the end points (B1 and B2) of the radially inner profile part of the bead core (7) and (ii) the additional coupling reinforcement (5) adjoins the carcass reinforcement (2) such as to be wound at least partially around the bead core (7), i.e. such as to cover at least partially the radially outer profile part of said core.</p> |
