The moldability of the stator of an axial gap type rotating electric machine improved. The axial gap type rotating electric machine has: a stator comprising core members disposed about a rotating shaft in a ring shape with a predetermined space from adjacent core members, said core members each having a core around which a coil is wound, the number of the turns of the coil being less on the outer perimeter side than on the inner perimeter side, the core members being molded with mold material; and a rotor facing an end surface of the core in the shaft direction through a predetermined gap. The core members comprise: a first core member in which the number of coil winding layers on one side in the shaft direction is larger than the number of winding layers on the other side; and a second core member in which the number of coil winding layers on one side in the shaft direction is less than the number of winding layers on the other side. In the stator, the first and second core members are alternately disposed, with the coil on the side where the number of the winding layers of the first core member is larger and the coil on the side where the number of the winding layers of the second core member is smaller opposed to each other.

The electric linear motion actuator includes an electric motor, a linear motion mechanism configured to convert rotary motion of the electric motor to linear motion of a linear motion part via a rotation input-output shaft, and a housing holding the linear motion mechanism. The electric motor includes a stator and a rotor which are arranged such that the directions of magnetic poles that generate interlinkage flux contributing to a motor torque are parallel with a rotation axis of the electric motor. The stator is arranged so as to be coupled with an axial end surface of the housing. The rotor is arranged so as to have a space, in the axial direction, from the torque generating surface of the stator, and the rotor is fixed to the rotation input-output shaft of the linear motion mechanism.

An axial field rotary energy device can include a housing having an axis. A stator assembly is mounted to the housing and has stator panels that are axially-stacked and discrete panels from each other. Each stator panel includes a respective printed circuit board (PCB) having respective coils that are electrically conductive and interconnected within the respective PCB. In addition, a rotor assembly including rotors is rotatably mounted within the housing on opposite axial ends of the stator assembly. The rotors can be mechanically coupled together. Each rotor can include magnets having leading and trailing edges. The trailing edge of one magnet and the leading edge of an adjacent magnet can be parallel to each other to define a consistent circumferential spacing, relative to the axis, between adjacent ones of the magnets.

The present invention discloses a built-in hybrid permanent magnet memory motor with local magnetic circuits in parallel, including a hybrid permanent magnet rotor, a stator, armature windings and a rotating shaft. The armature windings are disposed on the stator, and the stator is disposed outside the hybrid permanent magnet rotor. The hybrid permanent magnet rotor includes a rotor core, first permanent magnets, second permanent magnets and V-shaped magnetic barriers. The rotor core is disposed outside the rotating shaft, the V-shaped magnetic barriers are disposed inside the rotor core, the V-shaped magnetic barriers with openings facing outwards are equally distributed in a circumferential direction of the rotor core, the first permanent magnet is disposed in the opening of the V-shaped magnetic barrier, the second permanent magnet is disposed between the two adjacent V-shaped magnetic barriers, a coercivity of the first permanent magnet is greater than a coercivity of the second permanent magnet, and cross sections of the first permanent magnets and the second permanent magnets are in a straight line. According to the present invention, the problem that the size design of the permanent magnet is limited by the space position is solved, and the anti-demagnetization ability of the low-coercivity permanent magnets and the flux weakening ability of the motor are enhanced.

An axial flux rotary generator comprising: two magnetic annuli; a coil annulus; the magnetic annuli and coil annulus having a common axis; the two magnetic annuli defining a plurality of magnetic fields around the common axis extending across a gap between the two magnetic annuli and the coil annulus having a sequence of coils around the common axis in the gap such that lines of magnetic flux from the magnetic fields cut the turns of the coils and thus induce electric current in the coils as the magnetic annuli are caused to rotate relative to the coil annulus, means provided at or towards the central aperture of the coil annulus axial to resist flexure of the coil annulus.

A core that is used in an axial-gap rotary electric machine and that includes a body, and frame-shaped flange portions. The body includes an annular yoke and columnar teeth that are arranged in a circumferential direction of the yoke. The flange portions are fixed to end portions of the respective teeth. The yoke and the teeth are composed of a single powder compact. Each of the flange portions is composed of a powder compact that has a through-hole. The end portion of each of the teeth is inserted in the through-hole, and an end surface of each of the teeth is exposed from the through-hole. A ratio of an area of the end surface of each of the teeth to an area within an outer circumferential edge of each of the flange portions is 7.5% or more in a plan view in an axial direction of the yoke.

A flat-type stator with multilayer coils for a disc-type motor is provided with a stator coil and a flat stator base, wherein a coil assembly is arranged in the stator coil, and a plurality of coil assemblies are arranged in a ring or in a straight line on the stator base; the coil assembly is formed by stacking even-numbered layers of single coils overlapped with the stator base in a vertical direction, each single coil is composed of even-numbered layers of single-layer coils wound by a single wire, and the single-layer coil is provided with a single axial wire; metal wires are sequentially connected in series among the plurality of coil assemblies to form a coil unit, the single coils in the coil unit have a same structure and a same shape and are not overlapped axially.

Permanent magnet motor having a drive shaft connected to a power generator. At least a first power unit and a second power unit are arranged about the drive shaft, mutually delimited within the longitudinal axis of the drive shaft by a shielding plate. Each power unit exhibits a first rotary disc and a second rotary disc, mutually inclined with respect to the longitudinal axis of the drive shaft. A stator plate is arranged between the first and second rotary disc and exhibits a pull track along its periphery, and a push track on diametral opposite side of the rotary disk. At least six permanent magnet pairs having a pull magnet and a push magnet are arranged at an equal mutual distance along respective attachment circles at the same radial distance from the drive shaft as the pull track and the push track, respectively.

An electric work machine includes a smaller motor. An electric work machine includes a motor including a stator and a rotor rotatable about a rotation axis, and a sensor board including a rotation sensor that detects rotation of the rotor and a plate supporting the rotation sensor. The plate includes a first surface facing an end face of the rotor in an axial direction parallel to the rotation axis and a support area receiving the rotation sensor that faces the end face, and a second surface facing at least a part of the stator. In the axial direction, a distance between the support area and the end face is shorter than a distance between at least a part of the second surface and the end face.

A stator assembly for an electric motor includes a laminate steel core arranged on an axis. The stator assembly also includes a fluid inlet and a fluid outlet. The stator assembly additionally includes a stator housing arranged on the axis concentrically with respect to the laminate steel core. The stator housing has a conduit fluidly connected to each of the fluid inlet and the fluid outlet and configured to circulate fluid around the laminate steel core. The stator assembly also includes a structural skeleton embedded in the stator housing. The structural skeleton is thereby configured to reinforce the stator housing. An electric motor employing the above-described stator assembly is also contemplated.