Patent ID: 8872396

Claim:
A rotor for an electric motor comprising: a cylindrical rotor main body; a permanent magnet holding member made of a synthetic resin and fixed to an outer peripheral part of the rotor main body; and a plurality of permanent magnets held in the permanent magnet holding member, wherein an outer peripheral surface of the rotor main body comprises a cylindrical surface, wherein rotation prevention recessed parts are formed at a plurality of parts in a circumferential direction of the outer peripheral part in both end parts of the rotor main body, wherein the permanent magnet holding member includes annular parts which come into close contact with the outer peripheral parts of both end faces of the rotor main body and connecting parts which connect both the annular parts on the outer peripheral surface of the rotor main body and hold the permanent magnets, wherein a plurality of rotation prevention protruding parts fitted to the rotation prevention recessed parts of the rotor main body are formed integrally with the permanent magnet holding member, wherein the connecting parts of the permanent magnet holding member include a plurality of rod shaped parts which extend in an axial direction and connect both the annular parts, permanent magnet holding pawl parts protruding to both sides in the circumferential direction are integrally formed in parts respectively extending outward in a radial direction from the annular parts of the rod shaped parts, and the permanent magnets are held between the pawl parts of the adjacent rod shaped parts, and wherein the rod shaped parts are formed in the same circumferential positions as those of the rotation prevention protruding parts.