Abstract: A stator includes an insulator, a wire, a stator core, a cylindrical hollow terminal through which the stator is to be electrically connected, and a resinous molding material covering the stator core and an outer face of the hollow terminal. An inner face of the hollow terminal is exposed from the molding material, and a first end of the hollow terminal is open to the outside of the molding material.

Abstract: An axial-flux electric machine with a winding rotor comprises a stator section and a rotor section, both developing around and axis. The rotor section comprises a rotor, which, in turn, comprises a toroidal rotor core made of a ferromagnetic material and a plurality of windings and of teeth, which are angularly distributed on the rotor core in an alternated configuration. The teeth have, on at least one lateral surface of theirs, a shaped profile defining at least one holding surface, which is such as to cooperate with a resin matrix, which is suited to steadily lock the teeth on the rotor core.

Abstract: An AC electric motor includes an annular A-phase winding WA wound in the circumferential direction of a stator, a stator pole group SPGA configured to generate magnetic flux ?A to interlink with the A-phase winding WA, an annular B-phase winding WB wound in the circumferential direction, and a stator pole group SPGB configured to generate magnetic flux ?B to interlink with the B-phase winding WB. The motor additionally includes a third stator pole group SPGC, N and S magnetic poles of the rotor, and X magnetic poles, which serve as third rotor poles, showing magnetic characteristics between the N and S magnetic poles of the rotor. DC currents are supplied to the A-phase and B-phase windings WA and WB to generate rotational torque.

Abstract: The invention relates to a method for producing the rotor winding of an electrical machine having at least four exciter poles in the stator (11) and having a commutator rotor (13) with a number of slots (N) and pole teeth (Z) which deviates from the number of exciter poles, and having a number of individual tooth coils (S) and laminations (L) which is at least twice as high as the number of pole teeth, wherein the individual tooth coils are wound, starting from the first coil (S1) onto in each case that pole tooth with the lowest angular error (Wf) in relation to a pole division (Pt).

Abstract: A magnetic motor includes a rotor and a stator, in which there are magnets and materials of high magnetic permeability. The stator magnets are arranged with surfaces facing the rotor magnets in a staggered arrangement. The motor may be used to boost torque, for example in bicycles.

Abstract: There is provided a single phase induction vibration motor including: a bottom member having a shaft and a permanent magnet; a rotating member rotatably coupled to the shaft; a coil member disposed on the rotating member; and a magnetic member disposed on the rotating member to determine a stationary position of the rotating member, wherein the magnetic member is disposed to partially overlap with a region in which the permanent magnet is positioned, based on a horizontal surface of the rotating member.

Abstract: A printed circuit in which, in going from one end to another, a same conductive line is wound successively: around the first winding axis to form at least one half-turn of a first coil, then around the second winding axis to form at least one half-turn of a second coil, then around the first winding axis to form at least one half-turn of a first coil, then around the second winding axis to form at least one half-turn of a second coil.

Abstract: A disc motor includes an output shaft, a coil disc, an electric current supplying section, and a magnet. The coil disc is disc-shaped. The coil disc includes a first coil and a second coil. The first coil has a plurality of first partial coil sections radiating outward in a radial direction of the output shaft and first connecting sections each connecting two first partial coil sections. The second coil has a plurality of second partial coil sections radiating outward in the radial direction and second connecting sections each connecting two second partial coil sections. The total number of the first partial coil sections is different from that of the second partial coil sections. The electric current supplying section is configured to supply electric current to the coil disc. The magnet is disposed in opposition to the first and second partial coil sections.

Abstract: The invention relates to a method for producing the rotor winding of an electric machine comprising at least four exciter poles in the stator and a commutator rotor with a number of pole teeth which deviates from the number of exciter poles as well as a number of individual tooth coils and commutator segments that is at least twice as large as the number of pole teeth. In order to obtain low torque ripple and a long service life by optimally commutating the coils, a first coil is wound from an initial segment at a selectable offset angle to the initial segment on a first pole tooth, the winding wire is then fixed to another commutator segment at a predefined segment interstice length, whereupon a coil is successively wound from each segment onto the pole tooth having the lowest angular error relative the offset angle in relation to the pole separation of the stator, and the winding wire is then contacted on another segment at the same segment interstice length.

Abstract: Provided is an electric motor which is simple to design and manufacture, and can be operated by a small current. The electric motor is comprised of a stator 55 having a first disk 45 and a second disk 50, a first ring core 10 having a first switching winding 15 divided into a winding part and a gap part, a second ring core 12 having a second switching winding 20 divided into a winding part and a gap part, and a first rotor 35 having a third disk 25 and a second rotor 40 having a fourth disk 30 mutually connected by a driving shaft 60. The first and second switching windings 15, 20 include first and second power supplies 125-1, -2, and first and second switches 75-1, -2, respectively.

Abstract: The windings of a switched reluctance machine are supplied from a converter which is capable of providing bipolar energization. The energization pattern supplied to the windings is dependent on the number of stator and rotor poles in the machine and is selected to produce unipolar energization in the rotor poles. This in turn reduces the losses in the rotor which would otherwise result from bipolar energization. The machine may also be operated to provide energization patterns which are adapted to provide optimum performance in different parts of its operating speed range.

Abstract: A DC motor 12, has a stator housing 16 accommodating a permanent magnet stator and a rotor 15 rotatably mounted confronting the stator. The rotor 15 has a shaft 21, a rotor core 22 fitted to the shaft and having laminations forming salient poles or teeth 27. A commutator 23 is fitted to the shaft adjacent one end of the rotor core and windings 24 are wound about the teeth and terminated on segments of the commutator 23. The windings is formed by a number of coils with each coil being wound around a single tooth of the rotor and each tooth supporting a single coil. Brush gear comprising a plurality of brushes 26 in sliding contact with the commutator 23, transfers electrical power to the windings.

Abstract: An electric motor comprises a stator and a rotor received in the stator. The stator comprises a shell. The shape of a cross section of the shell perpendicular to the rotor axis is a polygon. The shell comprises a plurality of side walls and arcuate connection portions connecting neighboring side walls. The stator comprises 2n magnets disposed in the arcuate connection portions. The magnets form 2m magnetic poles, where m, n are unequal positive integers. Optionally, m is equal to half or twice n. The permanent magnets of the motor are located in the inner angle of polygon shell. Thus the diameter of rotor can be the greater, and the power density of motor can be increased in the same volume.

Abstract: A direct current motor with brushes in which an armature is provided with a rotating shaft that is supported by a yoke housing, an armature core that is fitted and fixed to a rotating shaft from the outer side, and a commutator that is provided on the rotating shaft adjacent to the armature core with nine segments arranged in the circumferential direction. The armature core has nine teeth that extend in the radial direction in a radial pattern and nine slots that are formed between the teeth and extend in the axial direction, the segments having the same polarity are connected with short-circuiting members, and a pair of brushes that make sliding contact with the segments is disposed so as to be mutually point symmetric centered on the rotating shaft. According to the preset invention, it is possible to effectively achieve flattening of the direct current motor.

Abstract: A rotor is accommodated in a yoke housing. Six magnets are arranged at equal intervals in the circumferential direction on the inner circumferential surface of the yoke housing so as to face the rotor. The core is generally cylindrical and includes an annular portion at an anti-output side and a balance at an output side. The magnets have six poles so as to effectively narrow a basal path width of the core in which the line of magnetic force concentrates most and magnetic saturation is likely to occur most. This reduces the diameter of the core. Therefore, the motor is effectively miniaturized in the axial direction and in the radial direction without complicating the formation steps.

Abstract: An electric motor has a housing, a rotor rotatably installed in the housing, n permanent magnets with the same polarity fixed at an inner surface of the housing. The rotor is a wound armature having a plurality of teeth extending in a radial direction. The housing includes n inner projecting parts, the permanent magnets and the inner projecting parts being alternately arranged in a circumferential direction about the rotor. The magnets generate 2n magnetic circuits via the housing and the rotor, n being an integer greater than one. The size of at least a portion of a first air gap formed between the permanent magnets and the rotor is greater than the size of at least a portion of a second air gap formed between the inner projecting parts and the rotor.

Abstract: The invention relates to a stator for an electronically switchable electric motor comprising a cylinder-shaped envelop and several poles, which are made of an ferromagnetic material and inwardly oriented in front of the cylinder axis (3), wherein said poles (P1 to P12) surround a cylindrical cavity for receiving the rotor (2), each pole (P1 to P12) is provided with a coil (L1 to L12) consisting of several wire windings in such a way that a magnetic armature is formed and the windings of coils (L1 to L12) au about the poles (P1 to P12) successively and without interruptions.

Abstract: A rotating electromagnetic apparatus has a stator frame supporting spaced apart pairs of permanent magnets which are arranged with like magnetic poles mutually facing. A toroidally shaped rotor frame is radially wound with a plurality of wire coils immersed within slots in the in rotor frame, the slots positioned adjacent to the opposing magnets. An electromechanical commutator is used to direct current between an outside source or sink through brushes to rotating multiple contacts simultaneously. The brushes are triangular in cross section. The coils may be connected in series or parallel interconnection.

Abstract: Rotary permanent magnet motors have salient stator poles with nonuniform pole thickness in the radial direction for compensating effects of cogging torque. Pole base portions terminate at pole shoes at the radial air gap. The pole shoes extend in the circumferential direction from the bulkier base portions. Variation of the thickness of the pole shoe changes the concentration of the effective flux at the point of coupling between the stator poles and the permanent magnet pole shoes. As there is no change in the active interfacing area of the pole shoes a uniform air gap is maintained. The torque signature for each stator pole/rotor permanent magnet interface can be selectively changed to smooth motor operation by configuring the stator pole shoe thickness to vary along its circumferential extent as appropriate. Pole shoes may have tapered leading or trailing edges with respect to a pole base to change the effective flux density in the air gap at a specific pitch of rotation.

Abstract: A rotary electric motor in which a stator comprises a first number of permanent magnet poles substantially similar to each other in configuration and spaced substantially equidistantly with alternating polarity along a radial air gap, and a rotor that comprises a second number of salient poles distributed along the radial air gap, the salient poles divided in groups that have magnetic circuits isolated from each other. The radial distance between rotor salient poles of each group and the radial difference between the stator permanent magnet poles are substantially the same.

Abstract: A generator or a 3-phase motor is arranged to provide multipolar permanent magnet excitation in combination with multipolar reluctance distribution wherein different numbers of poles are used for the permanent magnet excitation and for the reluctance distribution so that the principal working flux has a finite waveform. An annular rotor rotates about a cruciform stator. The magnets are buried in pole pieces of the stator so they converge radially inwardly with a triangular pole piece between them. Each pole piece is joined to the remainder of the stator by a bridge piece. The inner periphery of the rotor is formed as a circumferential array of teeth separated by recesses. The rotor may be within an annular stator or the machine may be linear.

Abstract: It is the object of the present invention to provide a long-life brushless fan motor which can be used for a long time in the environmental conditions in which water containing oil mist is splashed on the fan motor. A stator 1, a circuit substrate 4 including an electronic parts and a plurality of lead wires 21 are received in a stator side case 14. These parts in the case 14 are molded with an epoxy resin having a Shore hardness of D30 to D90 after curing, thereby forming a molded part 24. The pole faces 2b of the stator magnetic poles of the stator are covered with the molded part 24.