A brushless motor is provided including a rotor rotating around a center axis and a stator including a stator core and stator teeth radially extending from the stator core forming stator slots therebetween. Each stator tooth includes a radial main body and a tooth tip extending substantially laterally from an end of the radial main body opposite the stator core, and stator windings are wound around the stator teeth. Winding retention wedges are axially received within the slots, each winding retention wedge comprising: a first portion received within gaps formed between tooth tips of adjacent stator teeth, and a second portion received at least partially between adjacent stator windings to apply a force substantially in a range of a radially-inward direction to a lateral direction to the adjacent stator windings.

A stator for use in a motor includes a stator core, an insulator, a coil, and a terminal pin. The stator core includes a core back having an annular shape and teeth. The insulator covers at least a portion of the stator core. The coil is defined by a conductive wire wound around the teeth via the insulator. The terminal pin extends axially upward from an upper surface of the insulator and is connected to an end portion of the conductive wire. The insulator includes an annular portion, first protruding portions, and second protruding portions. The annular portion covers at least a portion of the core back and is centered on the central axis. The plurality of first protruding portions cover at least a portion of each of the teeth and protrude radially outward from the annular portion.

A contact apparatus of a stator has an annular interconnection housing which receives a number of busbars for interconnecting coil ends of a stator winding to a number of phase connections. The interconnection housing has an annularly encircling base section and a number of carrier sections that correspond to the number of phase connections. The carrier sections extend axially starting from the base section, wherein the respective phase connection has an axially extending contact section and a connecting section that runs orthogonally to the axially extending contact section. The respective phase connection is inserted into the associated carrier section in such a way that an axial movement of the contact section of the respective phase connection is blocked in the direction of the base section and is permitted in the opposite direction.

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 device may include a coil unit assembly that includes a first, second, and third coil unit annularly arranged. Further, may include a busbar provided on an outer peripheral surface of the coil unit assembly, wherein when a direction in which an axis of the stator extends is defined as an axial direction, a direction which is orthogonal to the axial direction and in which outer peripheral surface and inner peripheral surface of the stator face each other is a radial direction, and a direction along an outer periphery of the stator when viewed from the axial direction is a circumferential direction, wherein the coil units each include a split core that includes a tooth that extends in the radial direction, an insulator mounted to overlap at least the tooth of the split core, and a coil that includes a winding wound around the tooth of the split core with the insulator interposed therebetween.

A stator for an electric machine has a plurality of pins, which are arranged on concentric circles at different distances from a stator center point in slots and each concentric circle forms a layer, wherein four pins in different layers are respectively connected to one another in series and form a winding, a first pin of the winding is located in a first slot in the 4n−3 layer, wherein n is a natural number, a second pin of the winding is located in a second slot in the 4n−2 layer, wherein the second slot is at a first radial distance from the first slot in a first circumferential direction of the stator, a third pin of the winding is located in the first slot in the 4n layer, a fourth pin of the winding is located in the second slot in the 4n−1 layer.

A channel segment for a track of a mover device is provided, the channel segment comprising: opposite ends joined by a body forming a magnetic flux pathway between the opposite ends, the magnetic flux pathway being one or more of C-shaped, U-shaped and horseshoe shaped between the opposite ends, the opposite ends forming respective transverse magnetic flux pathways about perpendicular to the magnetic flux pathway; laminations of ferromagnetic material forming the body, the laminations about parallel to the magnetic flux pathway and about perpendicular to the respective transverse magnetic flux pathways; shear pins through the laminations, the shear pins positioned to reduce eddy currents one or more of in and around the shear pins; and a retention mechanism at the opposite ends, the retention mechanism configured to transversely fasten the laminations together at the opposite ends while remaining insulated from each other.

A winding pack for a stator assembly of an electric motor, including a coil assembly having twelve coils arranged in three groups, each having four coils of a winding, which are interleaved circumferentially. Each group has two pairs of adjacent coils, between which two pairs of the other groups are positioned. All groups have an identical sequence of their winding direction. Each pair contains both winding directions, the order of which differs between the two pairs. The technical winding start coming from one of the terminal regions in the pair that is first when viewed in the circumferential direction and the technical winding end leading to one of the terminal regions in the second pair of the relevant group are located, in relation to the winding pack, at the end face and on the side of the relevant second coil of the pair facing the first coil of this pair.

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 rotor includes an assembly of laminations including a plurality of radially-projecting poles, a winding of electrically conductive wires to be wound around each pole by means of wire-guiding heads arranged axially on either side of the lamination assembly. A guiding head support is inserted between the lamination assembly and each guiding head such that: an internal radial face of the support abuts against an external radial face at an axial end of the lamination assembly; and a peripheral surface of the support, which projects axially outward from the internal radial face of the support, is in contact with a contact face of the guiding head that is orientated radially outward from same, the guiding head abutting against the peripheral surface of the support.