One aspect of a method of manufacturing a rotor of the present invention is the method of manufacturing the rotor, which includes a rotor core rotatable about a central axis and a rotor magnet fixed to an outer peripheral surface of the rotor core, the method including a magnetization step of magnetizing a first magnetic member fixed to the outer peripheral surface of the rotor core to form the rotor magnet. The rotor core has a hole recessed from a surface on one side in an axial direction of the rotor core to the other side in the axial direction. In the magnetization step, the first magnetic member is magnetized in a state where a second magnetic member made of a magnetic material is inserted into the hole.

A hybrid stator core for an axial flux electric machine is described herein. The hybrid stator core includes a laminated component and at least one soft magnetic composite (SMC) component. The laminated component includes a first block section, a first tab, and a second tab, the first block section having a first end, a second end opposite the first end, a first side surface extending between the first and second ends, and a second side surface opposite the first side surface. The first tab projects from the first side surface adjacent to the first end of the first block section. The second tab projects from the first side surface adjacent to the second end of the first block section. The at least SMC component is configured to abut the first side surface of the first block section. The first and second tabs are configured to hold the at least one SMC component therebetween.

A hybrid stator core for an axial flux electric machine is described herein. The hybrid stator core includes a laminated component and at least one soft magnetic composite (SMC) component. The laminated component includes a first block section, a first tab, and a second tab, the first block section having a first end, a second end opposite the first end, a first side surface extending between the first and second ends, and a second side surface opposite the first side surface. The first tab projects from the first side surface adjacent to the first end of the first block section. The second tab projects from the first side surface adjacent to the second end of the first block section. The at least SMC component is configured to abut the first side surface of the first block section. The first and second tabs are configured to hold the at least one SMC component therebetween.

A motor includes a stator having a winding, and a rotor. The rotor rotates by receiving a rotational magnetic field generated by drive current supplied to the winding. The winding includes a first winding and a second winding, the first and second windings both being excited at the same timing by the drive current. The first winding and the second winding are connected in series. The rotor includes a first pole section and a second pole section. The second pole section faces the second winding at the rotation position of the rotor at which the first pole section faces the first winding. The magnetic force exerted on the stator by the second pole section is weaker than that exerted by the first pole section.

The present disclosure relates to a flux switching motor capable of realizing all a high output, a miniaturization, and an extremely light weight. In the flux switching motor, a stator is provided such that a length thereof in an axial direction in which a rotating shaft extends is shorter than a length of each magnet in the axial direction, and a rotor is provided such that a length thereof in the axial direction is less than or equal to the length of the stator in the axial direction.

A motor includes a stator, a rotor, a case, and back-surface magnet portions. The rotor has a first rotor core, a second rotor core and a field magnet. Each of the first and second rotor cores has a core base and claw-shaped magnetic poles. The field magnet is sandwiched between the first rotor core and the second rotor core and causes the claw-shaped magnetic poles of the first rotor core and the second rotor core to function as different magnetic poles. The back-surface magnet portions include a second and a first back-surface magnet portions respectively provided on the back surfaces of the claw-shaped magnetic poles of the second rotor core and the first rotor core. Size of the second back-surface magnet portion differs from size of the first back-surface magnet portion are different from each other.

A cylindrically-shaped motor shaft forming a rotational axis of a motor includes a processing target region, a spiral groove, and a reverse spiral groove intersecting with the spiral groove at at least one point. The processing target region has a first end closer to a bottom face of the cylindrical shape and second end closer to a top face side of the cylindrical shape. At least one turn of the spiral groove surrounds an outer circumferential surface in the processing target region. The reverse spiral groove surrounds the outer circumferential surface in the processing target region in a direction reverse to that of the spiral groove.

A cylindrically-shaped motor shaft forming a rotational axis of a motor includes a processing target region, a spiral groove, and a reverse spiral groove intersecting with the spiral groove at at least one point. The processing target region has a first end closer to a bottom face of the cylindrical shape and second end closer to a top face side of the cylindrical shape. At least one turn of the spiral groove surrounds an outer circumferential surface in the processing target region. The reverse spiral groove surrounds the outer circumferential surface in the processing target region in a direction reverse to that of the spiral groove.

A claw pole rotor for an electrical machine is provided, the claw pole rotor comprising a first claw pole component having a first yoke-shaft component to which at least two first claw pole fingers are connected, and a second claw pole component having a second yoke-shaft component to which at least two second claw pole fingers are connected, wherein the first claw pole fingers extend from a first side of the claw pole rotor towards a second side of the claw pole rotor, the second claw pole fingers extend from the second side towards the first side, and a magnet is arranged between the first yoke-shaft component of the first claw pole component and the second yoke-shaft component of the second claw pole component.

The present disclosure provides hybrid stator core components for an axial flux motor stator and methods for making the same. The hybrid stator core component includes a molded soft magnetic composite material and a laminated component. In one variation, a laminated insert comprising a plurality of insulated layers is non-releasably seated within a molded soft magnetic composite material. In another variation, a hybrid stator core component has a molded soft magnetic composite core and a laminated shell comprising a plurality of layers disposed around at least a portion of the molded soft magnetic composite core.