A stator (30) of an electric machine has a stator lamination stack (20) that comprises stator laminations (1). The stator (30) has at least one stator winding with conductor bars (31) arranged in slots of the stator lamination stack (20) and fixed in the slots of the stator lamination stack (20) with the aid of a fixing device. To improve the stator (30) with regard to the service life thereof and/or to the producibility thereof, at least one clamping stator lamination (8;28) has a clamping geometry that serves as the fixing device.

A stator is described herein comprising a first longitudinally extending slot having a cavity defined by a first inwardly facing longitudinal surface and a second inwardly facing longitudinal surface; said stator further comprising a spacer provided in said cavity of said first slot, said spacer comprising a first spacer component that comprises a first sheet of material having a first sheet surface facing inwardly into said slot and an opposite sheet surface that is in contact with and extends along the first longitudinally extending inner surface of said slot and wherein said inwardly facing first sheet surface of said first spacer component comprises at least one ridge projection extending along its length L. Methods for assembling such stators are also described.

A motor is provided that reduces noise and vibration, and a method is provided for manufacturing the motor and a cleaner having the motor. The motor includes a stator including a plurality of teeth that are spaced apart from each other in a predetermined interval in a circumferential direction and a coil that is wound around the plurality of teeth, a rotor that is disposed inside the stator, and a cage that is disposed in at least one of a plurality of slots that are formed between the plurality of teeth. The cage is configured to include a flow path to inject a bonding agent into at least one slot.

A motor may include a shield member that screens a magnetic field between a stator and a rotor, and a moving member that controls a position of the shield member in response to an electromagnetic interaction with the stator such that the screening of the magnetic field is configured to be selectively performed. The motor may prevent a generation of a counter electromotive force or regenerative braking.

The present disclosure relates to tooth assemblies (100) comprising a tooth body (110), a winding (120) arranged around the tooth body (110) and a winding stopper (130). The winding stopper (130) comprises a first portion (131) shaped and dimensioned to be received in a groove (114) of the tooth body (110). Further, the winding stopper (130) comprises a second portion (132) extending from the first portion (131) and protruding from a first lateral wall (113) of the tooth body (110). Winding stoppers (130) and methods (800) for assembling a tooth assembly (100) are also provided.

The present disclosure relates to tooth assemblies (100) comprising a tooth body (110), a winding (120) arranged around the tooth body (110) and a winding stopper (130). The winding stopper (130) comprises a first portion (131) shaped and dimensioned to be received in a groove (114) of the tooth body (110). Further, the winding stopper (130) comprises a second portion (132) extending from the first portion (131) and protruding from a first lateral wall (113) of the tooth body (110). Winding stoppers (130) and methods (800) for assembling a tooth assembly (100) are also provided.

An electric motor is provided that has a stator and a rotor rotatably mounted in the stator. The stator includes a plurality of motorettes, each having a ferrous metal core segment, and a conductive winding on the core segment. The plurality of motorettes are arranged in a circular arrangement, and a plurality of wedges are provided, with one of the wedges being positioned in each interface between the conductive windings of adjacent ones of the motorettes that presses the conductive windings of the adjacent ones of the motorettes towards respective ones of the ferrous metal core segments. This provides an arrangement with minimal or no air gaps between the conductive windings and the core segments, or an electric insulator on each of the core segments.

An electric motor is provided that has a stator and a rotor rotatably mounted in the stator. The stator includes a plurality of motorettes, each having a ferrous metal core segment, and a conductive winding on the core segment. The plurality of motorettes are arranged in a circular arrangement, and a plurality of wedges are provided, with one of the wedges being positioned in each interface between the conductive windings of adjacent ones of the motorettes that presses the conductive windings of the adjacent ones of the motorettes towards respective ones of the ferrous metal core segments. This provides an arrangement with minimal or no air gaps between the conductive windings and the core segments, or an electric insulator on each of the core segments.

Provided are a stator having insulating paper positioned and fixed using an inexpensive and simple structure, a motor having the stator, and a method for manufacturing the stator. The stator 18 of a motor is provided with a stator core 26 haying a plurality of slots 16, a plurality of coils 32 positioned in the slots, pieces of coil end insulating paper 40 that are positioned between a plurality of coil ends 44 and that insulate the coil ends 44 from each other, and a plurality of pieces of intercoil insulating paper 34 positioned in the slots 16, each of the plurality of pieces of intercoil insulating paper 34 having a projection 38 projecting from an axial end part 36 of the stator core. Each of the pieces of coil end insulating paper 40 has an adhesive part 42, and a plurality of projections 38 are affixed into a single piece of coil end insulating paper 40.

Provided are a stator having insulating paper positioned and fixed using an inexpensive and simple structure, a motor having the stator, and a method for manufacturing the stator. The stator 18 of a motor is provided with a stator core 26 haying a plurality of slots 16, a plurality of coils 32 positioned in the slots, pieces of coil end insulating paper 40 that are positioned between a plurality of coil ends 44 and that insulate the coil ends 44 from each other, and a plurality of pieces of intercoil insulating paper 34 positioned in the slots 16, each of the plurality of pieces of intercoil insulating paper 34 having a projection 38 projecting from an axial end part 36 of the stator core. Each of the pieces of coil end insulating paper 40 has an adhesive part 42, and a plurality of projections 38 are affixed into a single piece of coil end insulating paper 40.