An axial air-gap rotary electric machine includes a stator, a coil, and a bobbin. The bobbin includes a tube and a flange. The coil is wound on the outer periphery of the tube portion with regular winding. A number of turns of each of a plurality of layers wound around an external side of a last layer in contact with the flange is at least one less than a number of turns of each of a plurality of layers wound around an adjacent internal side of the last layer.

Continuously transposed conductor (“CTC”) cables are described. A CTC cable may include a plurality of electrically insulated strands connected in parallel at their ends. Additionally, each strand may include one or more conductors and an extruded insulation layer formed at least partially around the one or more conductors.

Continuously transposed conductor (“CTC”) cables are described. A CTC cable may include a plurality of electrically insulated strands connected in parallel at their ends. Additionally, each strand may include one or more conductors and an extruded insulation layer formed at least partially around the one or more conductors.

A stator for a rotary electric machine includes a stator core including a stack of a plurality of steel sheets 36; a stator coil wound around teeth of the stator core; and a plurality of insulators interposed between the stator core and the stator coil. Each of the insulators has at least one engagement tab projecting toward a side surface of a tooth. Each of the steel sheets 36 has a plurality of tooth portions 40 that form the teeth when the steel sheets 36 are stacked. Each of some of the plurality of tooth portions 40 has a notch 42 formed on a side surface of the tooth portion 40, the notches 42 forming an engagement recess in which the engagement tab is hooked when the steel sheets 36 are stacked. The stator core is formed by rotating and stacking the plurality of steel sheets 36.

A stator for an electric motor, in particular the steering motor of a motor vehicle, comprising a cylindrical stator yoke and a stator star joined therewith and having a number of radially outwardly directed stator teeth, the tooth tips thereof, in the assembly state, resting on the inner circumference of the stator yoke in corresponding connection points. The tooth tips on the stator star side, in the assembly state, in addition to being force-locked or frictionally locked with the connecting points on the stator yoke side in a press-fit, are also integrally bonded thereto.

In a method for manufacturing a motor bobbin around which a coil is wound, an insulating sheet and a core material are disposed within the cavity of an injection mold, and the motor bobbin is formed by the injection mold into which a resin is injected. The motor bobbin consists of the insulating sheet and a resin molded body.

A rotating electrical machine includes: a core including an annular yoke portion disposed while being centered around a rotation axis; toothed portions protruding from the yoke portion in a radial direction; and a tooth flange portion circumferentially sticking out from a protruding end of each of the toothed portions while being centered around the rotation axis; and an insulator covering a region from the toothed portion to the tooth flange portion, wherein the insulator includes a tooth cover portion, and a flange cover portion, and a reinforced portion is formed at the boundary between the tooth cover portion and the flange cover portion, and includes a first restricting surface, and a second restricting surface.

Various embodiments of the teachings herein include a cationic tape accelerator for use in a process for producing an insulation system by impregnation and/or encapsulation with an anhydride-free impregnating agent. The tape accelerator comprises an ionogenic compound of a sulfonium-containing cation and a hexafluoroantimonate anion.

Various embodiments of the teachings herein include a cationic tape accelerator for use in a process for producing an insulation system by impregnation and/or encapsulation with an anhydride-free impregnating agent. The tape accelerator comprises an ionogenic compound of a sulfonium-containing cation and a hexafluoroantimonate anion.

In a stator assembly, each stator core includes a plurality of protrusions and a plurality of recesses, which are provided periodically in a circumferential direction on an outer periphery. The protrusion abuts at least a part of an inner wall of a housing in the circumferential direction. The recess is smaller than the protrusion in a radial direction and has a gap relative to the inner wall of the housing. Adjacent stator cores are shifted in the circumferential direction by a predetermined shift angle such that a periodic unit formed of at least one protrusion and at least one recess appear alternately in the axial direction. The protrusion has a radius of curvature smaller than a radius of a circumscribed circle at a part abutting the inner wall of the housing.