摘要:
A rotary electric machine includes a rotor (20) and a rotor shaft (16). The rotor (20) has a cooling flow passage (41, 42) and the rotor shaft (16) is fixed to an inner peripheral surface of the rotor (20). The rotor shaft (16) has a hollow part (17) to which the liquid coolant is supplied, a coolant flow inlet (18) that provides communication between the hollow part (17) and the cooling flow passage (41, 42), and a coolant supply shaft (50) extending through the hollow part (17). The coolant supply shaft (50) has a coolant discharge port (52) that discharges the liquid coolant to the hollow part (17). A position in a rotor axial direction of the coolant flow inlet (18) deviates from a position in the rotor axial direction of the coolant discharge port (52).
摘要:
A vehicle electric motor (10; 210; 310; 410) including: a tubular-shaped stator core (24) constituted by laminated steel sheets (32); a casing (16) including an outer circumferential wall (16a) and a bottom wall (16b), and storing therein an axial end portion (24b) of the stator core (24); a casing cover (14) including an outer circumferential wall (14a) and a bottom wall (14b), and storing therein another axial end portion (24c) of the stator core (24), and a rotor (12) disposed inside the stator core (24). The stator core (24) includes fastened portions (34a, 34b, 34c) protruding radially outwardly from respective portions of an outer circumferential surface (24a) of the stator core (24) which are circumferentially spaced apart from each other. The stator core (24) is fastened at the fastened portions (34a, 34b, 34c) to the bottom wall (16b) of one (16) of the casing (16) and the casing cover (14). The other (14) of the casing (16) and the casing cover (14) includes protrusion portions (42a, 42b, 42c, 42d; 242a, 243a, 242b, 243b, 242c, 243c; 342a, 342b, 342c; 442a, 442b, 442c) protruding from its inner wall surface (14d) toward the stator core (24) so as to restrain inclination of the stator core (24).
摘要:
A rotor (10) of an electric motor is provided in which a cylindrical rotor core (16) that is formed by stacked magnetic steel sheets (19) and includes permanent magnets (24) is crimp-fixed to a rotor shaft (14). The rotor core (16) is directly fixed, in the axial direction of the rotor shaft (14), between a flange portion (12) that is provided on an outer periphery of the rotor shaft (14) and abuts against one axial end surface (17a) of the rotor core (16), and a crimping member (18) that is crimp-fixed on the rotor shaft (14) while pressure-contacting the other axial end surface of the rotor core (16).
摘要:
In this stator, lead wire extended portions and a power wire extended portion are extended from a resin portion by an extended portion separating portion such that the lead wire extended portions are separated from the power wire extended portion by distances that are greater than a maximum value of the width of clearance between an end-side portion of the lead wire extended portion and a facing portion located next to the end-side portion, the resin portion being provided so as to cover lead wire portions and a power wire portion.
摘要:
A cylindrical rotor core 10 for a rotating electrical machine having magnetic steel plates integrally connected by laminating in an axial direction, and having magnet insertion holes 24, 26 formed for inserting permanent magnets inside, wherein the magnet insertion holes 24, 26 are formed extending in the axial direction in a core inner section in the vicinity of an outer peripheral surface 11c of the rotor core 10, and with openings formed in axial direction end sections of the rotor core 10, and a plurality of magnetic steel plates, including magnetic steel plates at outermost sides in the axial direction in which the openings are formed, are fixed by welding at inner wall surfaces 42 of the magnet insertion holes 24, 26.
摘要:
A cylindrical rotor core 10 for a rotating electrical machine having magnetic steel plates integrally connected by laminating in an axial direction, and having magnet insertion holes 24, 26 formed for inserting permanent magnets inside, wherein the magnet insertion holes 24, 26 are formed extending in the axial direction in a core inner section in the vicinity of an outer peripheral surface 11c of the rotor core 10, and with openings formed in axial direction end sections of the rotor core 10, and a plurality of magnetic steel plates, including magnetic steel plates at outermost sides in the axial direction in which the openings are formed, are fixed by welding at inner wall surfaces 42 of the magnet insertion holes 24, 26.
摘要:
A rotor for a cylindrical rotor core for a rotating electrical machine having magnetic steel plates integrally connected by laminating in an axial direction, and having magnet insertion holes formed for inserting permanent magnets inside, wherein the magnet insertion holes are formed extending in the axial direction in a core inner section in the vicinity of an outer peripheral surface 11c of the rotor core, and with openings formed in axial direction end sections of the rotor core, and a plurality of magnetic steel plates, including magnetic steel plates at outermost sides in the axial direction in which the openings are formed, are fixed by welding at inner wall surfaces of the magnet insertion holes.