A motor includes a stator and a rotor. The stator includes a stator core and a bobbin. The bobbin includes upper and lower bobbins covering the stator core from two axial ends. The upper and lower bobbins each include an end face and a side portion. The two end faces overlap two axial ends of the stator core. The side portions are aslant relative to the axial direction of the stator core. Ends of the upper and lower bobbins connected to the end faces form tight fit with the stator core, and the other ends away from the end faces form loose fit with the stator core.

A stator with concentrated windings includes a ferromagnetic core having a central axis, an electrical insulation system disposed on the ferromagnetic core and a winding disposed on the insulation system to be mechanically locked thereto and electrically insulated from the ferromagnetic core; the ferromagnetic core includes a plurality of radial teeth without pole shoe and each tooth has a radial length, an axial depth and a width orthogonal to the radial length and axial depth; the ratio between the slot pitch and the width of the tooth is between 1.2 and 1.5, preferably between 1.3 and 1.4.

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.

An electronic actuator is made up of a polyphase brushless motor comprising a rotor provided with permanent magnets and secured to an output shaft, and a stator supporting coils and providing the magnetic drive of the rotor, a first electrical connection assembly powering the coils, said stator being built into a stator module made up of a material which coats the wound stator as well as the first electrical connection assembly. The rotor is built into a rotor module made up of a flange coating a bearing that guides the shaft of the rotor. The stator module and the rotor module have elements for indexing and for attachment relative to one another.

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.

A rotor having multiple poles is provided and includes at each pole an end winding support forming a channel, a bus bar disposed in the channel and edge-wound coils disposed to extend around the end-winding support and the bus bar. The edge-wound coils are stacked radially and include an inner diameter coil routed to an adjacent pole and brazed to an inner diameter coil of the adjacent pole and an outer diameter coil brazed to the bus bar.

The present disclosure relates to a motor assembly improving a coupling structure of a rotor shaft and an impeller, and a cleaner including the same. The motor assembly includes a stator, a rotor including a rotor shaft including a metallic material and configured to be rotatable by electromagnetic interaction with the stator, a hub including a plastic material and including a hollow portion configured to allow the rotor shaft to pass therethrough, and a shaft coupling member positioned between the hollow portion and the rotor shaft and including a plastic material different from a plastic material forming the hub.