ROTOR OF AN ELECTRIC MACHINE AND SPRING FOR RADIALLY SUPPORTING A RELATED PERMANENT MAGNET

摘要

The invention essentially relates to a rotor (100) for an electric machine comprising a central core (101) and arms (102) extending radially relative to the core (101). Permanent magnets (114) are positioned inside recesses (111) each defined by two surfaces of two adjacent arms (102), an outer surface of the core (101), and the edges (105) of the arms (102). According to the invention, springs (122) are positioned inside the recesses (111) between the outer core (101) surface and a surface of the magnet (114) facing the axis (X) of the rotor (100). Said springs (122) ensure that the permanent magnet (114) is supported inside the recess (111) thereof against the flanges (105) of the arms of the rotor, by exerting a radial force (F1) by deformation on the permanent magnet (114) from the inside toward the outside of the rotor (100). The invention also relates to the springs (122) as such, which comprise a central rounded portion and two rounded end portions located on either side of the central rounded portion, having inverted curves. The invention further relates to a spring for supporting related permanent magnets.