A rotary electric machine includes: a stator; and a rotor that face the stator and that rotates together with a rotation shaft, the rotor including: a rotor core including rotor salient poles and a slot formed between adjacent rotor salient poles, and a rotor coil wound around each of the rotor salient poles via an insulating member through the slot. Further, the rotor coil includes: a slot coil portion; and a coil end portion protruding from an end surface of the rotor core in an axial direction, the insulating member includes: a slot insulating portion; and an end insulating portion, and the slot insulating portion and the end insulating portion are integrated.

A coil includes: a series of turns constituted by a first turn to an n-th turn of a conductive wire having a polygonal cross-section, where n is an integer equal to or larger than 3, and the conductive wire is wound in a spiral shape and is stacked in a direction from downward toward upward; and an insulating member disposed on either an upper surface or a lower surface of an i-th turn, where i is an integer satisfying 1≤i≤n.

A stator assembly includes an annular body extending about a central axis and a plurality of stator teeth extending axially from the annular body and spaced circumferentially about the annular body. The stator assembly includes at least one conduction coil and at least one bobbin configured to support the at least one conduction coil. The at least one bobbin is coupled to a first stator tooth such that the at least one conduction coil extends about the first stator tooth. The stator assembly further includes at least one insulation member configured to couple to a second stator tooth and extend into a slot between the second stator tooth and the at least one conduction coil. The at least one insulation member includes an end wall configured to cover the distal end of the second stator tooth when the at least one insulation member is coupled to the second stator tooth.

A preformed coil assembly for a stator of an electric motor includes first and second winding carriers located on respective opposite ends of the preformed coil assembly and a winding part wound around the winding carriers to form first and second elongated winding portions with an elongated opening therebetween to be fitted around a tooth of a stator. The preformed coil assembly includes first and second insulation films disposed around the first and second winding portions. Each insulation film includes upper and lower folded portions resting against first and second opposite walls of respective winding carriers to provide first and second distances between respective opposite lateral sides of the tooth and a corresponding non-folded portion of respective first and second insulation films. The first and second distances are equal so that the preformed coil assembly is centered with respect to the tooth when mounted therearound.

A compressor includes a stator core that includes a yoke portion and a teeth portion, a rotor that is arranged inside the stator core, a compression unit that compresses a refrigerant along with rotation of the rotor relative to the stator core, a container that has an internal space in which the stator core and the compression unit are arranged, a winding that is wound around the teeth portion, and an insulating film that is arranged in the slot so as to separate the winding from the stator core, wherein a welding portion that is fixed to the container by welding is formed on a side surface of the yoke portion on an outer diameter side, and a sheet that is sandwiched between the yoke portion and the insulating film is arranged in the slot that corresponds to the welding portion in a circumferential direction of the stator core.

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.

An electric machine comprising a rotor having a rotor body. The rotor body has multiple poles each carrying at least one rotor winding formed from multiple conductor loops. The poles extend in a radial direction of the rotor and the conductor loops pass through slots each formed between two adjacent poles. A support element extending in the radial direction is arranged in each of the slots between the rotor windings of the adjacent poles. The support element applies pressure to the conductor loops when the rotor rotates and/or heats up. A pressure distribution element extending at least in portions in the radial direction along the support element and the adjacent rotor winding is arranged between the support element and the rotor windings, which pressure distribution element distributes the pressure applied by the support element onto the adjacent rotor winding.

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 stator includes a yoke extending in a circumferential direction about an axis line, a tooth extending from the yoke in a first direction toward the axis line, and a coil wound around and fixed to the tooth. The yoke has an inner wall surface facing the axis line. The tooth has a root part connected to the yoke. The inner wall surface of the yoke is a flat surface extending from an end of the root part of the tooth in the circumferential direction to an inner circumferential side relative to a plane passing through the end and perpendicular to the first direction.

A stator includes: a stator core having an annular shape; teeth that protrudes inwardly in a radial direction from an inner peripheral surface of the stator core; an insulator that covers the teeth; and a winding wound around the teeth with the insulator interposed between the winding and the teeth. The teeth includes: a right surface extending in a first direction along a central axis of the stator core; a left surface extending in the first direction; a top surface that extends between the right surface and the left surface in a second direction intersecting the first direction; a bottom surface that extends between the right surface and the left surface in the second direction; and a through-hole portion penetrating through the teeth from the top surface to the bottom surface.