An armature which radially faces a magnetic field-producing unit equipped with a magnet unit having a plurality of magnetic poles includes a housing, an armature core, a multi-phase armature winding, and bus bars. The housing includes a cylinder and a disc-shaped end plate placed in contact with one of axially opposed ends of the cylinder. The armature core is disposed on a portion of the cylinder which radially faces the magnet unit. The armature winding is disposed on a portion of the armature core which radially faces the magnet unit. The bus bars electrically connect phase windings of the armature winding together. The armature also includes a bus bar module which is of a circular or C-shape extending along the circumference of the armature core. The bus bar module is secured to the cylinder, the end plate, or one of axially opposed ends of the armature core.

An armature includes an armature winding of multiple phases having phase windings, for each phase, that includes a plurality of partial windings, and a base member that includes a circular cylindrical back yoke. The partial winding includes a pair of intermediate conductor portions and crossover portions that connect the intermediate conductor portions in an annular shape. A conductor is wound in multiple layers in the intermediate conductor portions and the crossover portions. An interference prevention portion extends in a radial direction. The intermediate conductor portions are arrayed in a predetermined order in the circumferential direction, by one of the intermediate conductor portions of a first phase being arranged between the intermediate conductor portions of the partial winding of a second phase. The partial windings are assembled to the back yoke in a state in which an insulation layer is interposed between the intermediate conductor portion and the back yoke.

A rotating electric machine includes a field system having a magnet section and an armature having a multi-phase armature coil. The magnet section has easy axes of magnetization oriented to be more parallel to a d-axis at locations closer to the d-axis than at locations closer to a q-axis. The magnet section has an intrinsic coercive force higher than or equal to 400 [kA/m] and a residual flux density higher than or equal to 1.0 [T]. There are no inter-conductor members provided between electrical conductor sections of the armature coil. The armature coil includes a plurality of phase windings each of which is constituted of a plurality of partial windings. Each of the partial windings is formed of an electrical conductor that is multiply wound in the electrical conductor sections of the same phase. In each of the phase windings, the partial windings are connected in parallel with each other.

In a rotating electrical machine, a holder member is disposed to be radially closer to an armature coil than to a magnetic field generator. The holder member is configured to hold the armature coil. The holder member has a first portion that faces a first end portion of the armature coil, and a second portion that faces a second end portion of the armature coil. The first portion of the holder member is thermally coupled to the first end portion of the armature coil. The second portion of the holder member is thermally coupled to the second end portion of the armature coil.

A motor for a laundry appliance includes a drive shaft coupled to a drum at a first end. The rotor frame is coupled proximate the second end of the drive shaft, where the rotor frame includes at least one polymeric material. A central hub includes a core and a perimetrical ring that extends circumferentially around the core. A plurality of recesses are defined within a planar surface of the perimetrical ring, wherein a portion of the polymeric material is received within the plurality of recesses to secure the rotor frame to the central hub.

A motor for a laundry appliance includes a drive shaft coupled to a drum at a first end. The rotor frame is coupled proximate the second end of the drive shaft, where the rotor frame includes at least one polymeric material. A central hub includes a core and a perimetrical ring that extends circumferentially around the core. A plurality of recesses are defined within a planar surface of the perimetrical ring, wherein a portion of the polymeric material is received within the plurality of recesses to secure the rotor frame to the central hub.

A magnetic element holder (1) of an electric motor has a carrier formed as a frame structure. The carrier has at least one receiving section (2) to receive at least one magnetic element (6). The carrier is configured with a holding device (3) for positionally fixed holding the at least one magnetic element (6) inside the at least one receiving section (2). The magnetic element holder (1) is configured to be fastened to a rotor (100) of an electric motor.

A motor of the invention includes a stator having a slot wound with a coil and a circular shaped housing accommodating the stator, and a rotor disposed on an inner surface of the housing and spaced apart from the slot and having a plurality of permanent magnets having the same number as magnetic poles and having different magnetic polarities. Each of the plurality of permanent magnets has a length corresponding to a first angle according to the number of magnetic poles. The plurality of permanent magnets are spaced apart from each other at a third angle according to the first angle and a second angle corresponding to the number of magnetic poles. The first, second, third angles of the motor refer to a center point of the housing as an angle reference point. The motor of an embodiment may be a motor provided in a washing machine.

It is described an electric machine with permanent magnets, which can function as a high torque and power per mass motor or generator. The machine includes a rotor and a stator. The rotor and the stator have spiral shape, the stator is located inside the rotor. The rotor contains at least two permanent magnets of different polarity, forming spirals around the stator. The stator contains a ferromagnetic core, on which the three-phase winding is spirally wound. This construction allows almost the entire winding to participate in torque generation. The cooling with a fluid medium inside the magnet core allows to remove heating from the entire length of the winding, which significantly increases the operating efficiency.

A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes an annular core back and a stator core including teeth extending from the core back to one side in the radial direction. The stator core includes a laminated steel sheet in which electromagnetic steel sheets are laminated in a direction of the central axis. Each of the electromagnetic steel sheets includes a caulking dowel portion to which the adjacent electromagnetic steel sheets are connected by press-fitting. The caulking dowel portion includes a protrusion protruding from the core back to another side in the radial direction.