Protection of a structural component of a timepiece

摘要

Protective device (1) for the protection of a structural component, notably a main plate (2), of a timepiece movement (3) on a receiving surface comprised in this structural component (2) for receiving in abutment a complementary bearing surface (51) of a wheel set (5). This protective device (1) includes at least one insert (6) including a slide surface (7) having a higher surface hardness than that of this structural component (2), this insert (6) being assembled on or in this structural component (2) so that this slide surface (7) thereof coincides with this receiving surface.