Optimized load-bearing structure for bearing support and optimized bearing support

A load-bearing structure for a bearing support to be mounted on a rim inside a tire fitted on a vehicle, the structure being arranged to support a tread of the tire in an event of a loss of inflation pressure, the load-bearing structure comprising:

• a substantially cylindrical base;
• a substantially cylindrical crown;
• and
• an annular body connecting the base and the crown,
• wherein the body includes a plurality of partitions distributed regularly circumferentially, extending axially substantially from one side to another of the body and radially from the base to the crown with a mean orientation relative to a radial direction,
• wherein two circumferentially adjacent partitions exhibit contrary orientations relative to the radial direction, such that the mean orientation of the partitions is between 10 and 50 degrees, such that two circumferentially adjacent partitions have at most one common zone laid out at the base or the crown, and such that two adjacent partitions define with the base and/or the crown cavities shaped as at least one of:
• triangles and trapezoids, and
• wherein the base is formed of at least one material whose modulus in extension is greater than a modulus in extension of materials constituting the crown.