AN ELECTRIC MOTOR ROTOR AND A PROCESS FOR PRODUCING AN ELECTRIC MOTOR ROTOR

摘要

An electric motor rotor and a process for producing an electric motor rotor, comprising a rotor core (10) in which lateral face (11) are seated and affixed, through a retaining layer (30) of an adhesive material, magnet elements (20). The adhesive material should have a modulus of elasticity which is lower than the modulus of elasticity of any of the parts of rotor core (10) and magnet elements (20). Around the magnet elements (20) may be provided a rotor cover (40) in a thermo-retractible material which may further surround, through end annular flanges (41), the end faces of the magnet elements (20) and also the end annular faces (12) of the rotor core (10). Spacing means (50) may be provided at the region of the retaining layer (30), in order to guarantee a minimum thickness to the latter and, together with the characteristics of the adhesive material, allow to absorb deformations of thermal origin resulting from the operation of the electric motor.