Thermal protection device

A thermal protection device which can be used for protecting a disk- or drum-brake boot and composed of a support and a thermal screen, the thermal screen comprising a plate pierced through by an orifice to present an outer edge and an inner edge, the plate consisting of an elastically deformable material not subject to buckling and held in place on the support by means of at least one first bearing surface on which the plate exerts, by means of the inner edge, a force resulting from elastic deformation, said device comprising additional bearing means supplying the plate with a second bearing surface and enabling the plate to exert on the first and second bearing surfaces forces oriented respectively in opposite directions, the inner edge of the plate cut out so as to present a plurality of tabs, the support comprising a first cylindrical portion having a circular periphery which constitutes the first bearing surface, the second bearing surface comprising at least one portion of an axial face of a second cylindrical portion of the support, contiguous with the first cylindrical portion and arranged toward the outside of the first cylindrical portion along a radial direction of the first cylindrical portion, the axial face of the second cylindrical portion of the support, except at the second bearing surface, hollowed out to provide a cavity, the plate near of the inner deformed out of a plane of the plate and along two folds of opposite concavities to form an annular flange, said flange located in the cavity without touching a bottom of the cavity, and the second bearing surface comprising at least one portion of the periphery of the axial face of said second cylindrical portion.