Tyre bead for a large goods vehicle

Abstract

A tire having two beads and a carcass reinforcement with a main part wrapped within each bead around a bead wire core to form a turned-back portion. Each bead has an additional reinforcement and a filler profiled element extending the bead wire core radially outwards. This filler profiled element has, in any meridian plane, a three exterior sides including a radially inner side, axially inner side and axially outer side, with the axially inner and outer sides converging at a radially outermost point, and is formed of a stack in the radial direction of at least three polymer materials in contact along a contact surface that intersects any meridian plane along a meridian line.

Description

technical field

[0001] The invention relates to a tire fitted to a heavy goods vehicle, such as a commercial vehicle intended to transport heavy loads. More specifically, the present invention relates to radial tires.

[0002] The invention covers more particularly the beads of the tyre, that is to say those parts of the tire which provide a mechanical connection between the tire and the rim on which it is mounted. This tire comprises two beads connected respectively by two sidewalls to a tread strip intended to come into contact with the ground through the tread surface. Background technique

[0003] The following definitions are used below:

[0004] - "Meridian plane": the plane containing the axis of rotation of the tyre.

[0005] - "equatorial plane": the plane passing through the middle of the tread surface and perpendicular to the axis of rotation of the tyre.

[0006] - "radial direction": a direction perpendicular to the axis of rotation of the tyre.

[0007] - ...

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