Abstract: A motor is disclosed. The motor in accordance with an embodiment of the present invention can include: a shaft; a bearing supporting the shaft to rotate; a thrust plate supporting a lower end of the shaft a boss joined to the shaft and having a ring-shaped groove on a side facing the bearing; and a rotor joined to the boss.

Abstract: A stator for an electric rotating machine has iron core fastening members on the outer circumferential surface of a stator iron core, spaced apart from one another in a circumferential direction and fastened to the iron core in an axial direction. Holding rings on the outer circumferential surface of the iron core, spaced apart from one another in the axial direction, press the iron core toward a center portion thereof via the iron core fastening members. Ring-shaped inner frame members protrude from the inner surface of a frame that encloses the iron core, and are spaced apart from one another in the axial direction. Elastic supporting members are fixed to the inner circumferential surfaces of the inner frame members that are adjacent to one another, and are fixed to the outer circumferential surfaces of the holding rings at the middle in the axial direction, or vice versa.

Abstract: A stator for a rotary electric machine with wedge members insertable into slots without being bent or folded is provided. A coupling portion is integrally formed at a non-inserted end portion, which is not inserted into a slot, of a wedge member, the coupling portion extending across an end of a partition wall portion and an end of a block portion. The wedge member and the coupling portion are formed of a synthetic resin material. Two or more coupling portions of two or more adjacently disposed wedge members are integrally formed as a continuous coupling portion.

Abstract: A submersible motor is provided for the drive of a submersible pump, with a rotor (6, 10) which is mounted in the motor housing (2) via a thrust bearing (16). The thrust bearing (16) includes a stationary bearing ring (34) on whose first axial side a thrust bearing surface is situated and whose opposite second axial side (40) has a spherical curvature. The second axial side of the bearing ring (34) bears on a correspondingly spherically curved, annular abutment surface (42) of a bearing carrier (44).

Abstract: This invention presents a novel method for designing and manufacturing electrical windings for electrical machines. The presented manufacturing technique gives possibilities for an increased filling factor compared to conventional technique and improved heat transfer through application of thermally conductive compounds. The ready winding represents a solid body and has the strictly determined geometrical form. The slot part of the ready winding represents rods. These rods are the composite material consisting of coils of the insulated copper wire and any compound. The cross section of these rods precisely coincides with the cross section of slots of stator and differs only on the value of the tolerance necessary for assembling. End parts of the ready winding represent rings from a composite material. Visual appearance of a winding reminds the squirrel cage of a rotor of the asynchronous motor. The specified technology provides high precision of manufacturing of a winding.

Abstract: A linear synchronous motor, in which one or more intermediate annular magnetic pole portions and yoke assemblies can be connected easily while positioning the intermediate annular magnetic pole portions. A fitting concave portion that is opened in an axial direction and a direction away from a direct drive shaft is formed in each connected portion of the intermediate annular magnetic pole portions. A plurality of fitting grooves are formed on an outer peripheral surface of a pair of magnetic cylindrical members at a plurality of portions facing the plurality of intermediate annular magnetic pole portions. The intermediate annular magnetic pole portions are fixedly positioned between the pair of magnetic cylindrical members by fitting a peripheral portion defining the fitting concave portion of the intermediate annular magnetic pole portion into the corresponding fitting groove of the magnetic cylindrical member.

Abstract: A motor of a door lock for a vehicle comprises: a motor housing; an end cap fixed to the motor housing; and a rotation detector. The motor housing accommodates an armature including a motor shaft and a commutator. A sensor magnet is fixed to the motor shaft and the rotation detector comprises a rotation sensor fixed to a circuit board fixed to an inner part of the end cap and disposed adjacent the sensor magnet for sensing rotation of the magnet to produce a corresponding signal. A sensor connector fixed to the circuit board and electrically connected with the rotation sensor; connects to signal wires which transfer the signal to a microprocessor of the vehicle.

Abstract: An oscillator typically includes several pivotable oscillating arms each having a drive magnet and a follower magnet thereon so that the drive magnet on one arm drives movement of the follower magnet on another arm to oscillatingly pivot the other arm. Typically, a first repelling magnet is mounted on each oscillating arm and two repelling magnets are positioned on opposite sides of the first repelling magnet to facilitate the pivotal oscillation of the oscillating arm. A rotatable flywheel with a drive magnet thereon may drive movement of the follower magnet on one of the arms to drive pivotal movement of that arm. An electric motor may be used to drive rotation of the flywheel. A generating magnet may be mounted on each oscillating arm and movable adjacent an electrically conductive coil for producing an electric current therein. The coil may be in electrical communication with the motor.

Abstract: In a converter motor, the converter unit and the electric motor together form a mechatronic unit. The converter unit is located behind the electric motor and is thermally coupled with the rear bearing shield. The converter unit includes a through hole, through which the rear end of the motor shaft passes. A contactless position detector is located in the region of this through hole.

Abstract: A first pair of connected portions of one end magnetic pole portion, a first pair of connected portions of an end bracket, a first pair of connected portions of the other end magnetic pole portion, and a first pair of connected portions of each of five magnetic pole portions are connected by a pair of magnetic cylindrical members. A second pair of one connected portions of one end magnetic pole portion, a second pair of the other end magnetic pole portion, and a second pair of connected portions of each of five magnetic pole portions are connected by a pair of magnetic conductive parts. One pair of guide shafts are slidably fitted into the one pair of magnetic cylindrical members through linear bearings. A yoke is constituted from the one pair of magnetic cylindrical members and one pair of magnetic conductive parts. The five magnetic pole portions are each formed by laminating a plurality of magnetic steel plates in the axial direction.

Abstract: A rotary electrical machine has a mechanism capable of varying an output characteristic, without increasing mechanical loss, or without consuming the electric power that does not contribute to increasing torque. The rotary electrical machine has a rotor with N pole and S pole magnets alternately and fixedly disposed thereon. An end surface, (which opposes the rotor), of each of a plurality of first teeth positioned on a first stator section is broader than that of the opposite surface thereof, and a winding is wound around a portion between both of the end surfaces. A second stator section has second teeth, corresponding the number of the first teeth, and which has no winding. The second teeth are disposed to oppose the end surfaces of the respective first teeth, and each second tooth is reciprocally movable between a reference position at which the second tooth directly opposes the respective first tooth and a maximum movable position located at the right center position between the respective end surfaces.

Abstract: A rotational apparatus with one or more passive magnetic bearing(s) is described. The rotational apparatus includes a rotor with a tapered magnetic ring and a stator with a tapered array of shorted conducting circuits. A repulsive force between the tapered magnetic ring and the tapered array of shorted conducting circuits acts a passive magnetic bearing that centers the rotor radially in a stator cavity and that repels the rotor axially away from an end of the stator cavity.

Abstract: Improved energy conversion devices comprise a first ferromagnetic element, a second ferromagnetic element oriented such that similar poles of the first ferromagnetic element and the second ferromagnetic element can be positioned proximate each other, and a mechanical element connected to the first ferromagnetic element such that movement of the first ferromagnetic element can actuate the mechanical element to provide mechanical work. In some embodiments, the energy conversion devices can further comprise an externally powered temperature control device to selectively alter the temperature of the ferromagnetic elements to change the Curie temperature of the ferromagnetic elements. The change in temperature of the ferromagnetic elements and the orientation of the first and second ferromagnetic elements allows the repulsive force between the first and second ferromagnetic elements to result in mechanical work.

Abstract: A method for fabricating a monolithic micro-generator comprising: fabricating a plurality of magnet layer elements by preparing a semiconductor substrate surface to define: a plurality of coil layer recesses, a plurality of magnet wells, a plurality of integral compliant regions, and a plurality of bonding posts; disposing a ferromagnetic mass within each of a plurality of the magnet wells; fabricating a coil layer element by preparing a second semiconductor substrate surface to define a coil well, and one or more through holes, each hole disposed to accept a bonding post; disposing a conductive coil within the coil well; and bonding the upper bonding post surfaces of a magnet layer element to the corresponding upper bonding post surfaces of another magnet layer element with a coil layer element disposed between their upper surfaces such that each of the bonding posts passes through a corresponding through hole in the coil layer element.

Abstract: A permanent magnet included in a rotor of a brush-less motor is a radial anisotropic magnet in which multi-poles are magnetized in the circumferential direction and is skew magnetized along the axial direction in such a manner that a surface to one end part of an upper side from a central part in the axial direction and a surface to an end part of a lower side from the central part are axially shifted by a predetermined angle in the circumferential direction from each other. In accordance with this skew-magnetization, coggings including irregularly varying components generated in the rotor owing to the three-dimensional shapes of coil ends provided at opposite ends of a tooth 611a for fixing a winding have opposite phases to each other, so that the coggings are cancelled with each other. Accordingly, the coggings can be reduced or cancelled.

Abstract: In a rotary electric machine, for enhancing the reliability and reducing the size thereof, the rotary electric machine comprises a stator, and a rotor opposed to the stator and adapted to be rotated around a shaft, the rotor having an iron core formed therein with a plurality of axial holes formed in the iron core, a plurality of conductor bars inserted respectively in the holes, and end rings provided at the end parts of the conductor bars, wherein the outer peripheral parts of the end rings are electrically and mechanically joined to the conductor bars through friction stir welding, and the one end part of the conductor bar is axially projected from the end ring. With this configuration, it is possible to enhance the capability of heat radiation from the rotary electric machine and to enhance the design freedom of component parts around the stator and the rotor.

Abstract: An electric drive, in particular a wiper drive for vehicles, is proposed, with an electric driving motor in a motor housing (50), a brush holder (10) projecting into the motor housing (50), an anti-interference module (18) which is connected electrically and mechanically to the brush holder (10) and is intended for the electrical connection and interference protection of the motor, and with a gear mechanism (52) which is attached to the motor housing (50), at least partially accommodates the anti-interference module (18) and is designed in accordance with the predetermined position of the output shaft (53) with respect to the drive shaft (58).

Abstract: The brushless DC electric motor comprises, a rotor including a shaft and a permanent magnet fixed on said rotor shaft, stator including a winding in the shape of a hollow cylinder and composed of a plurality of rhombic single coils made of flat wire. The single coils overlap each other in an imbricated manner, wherein the single coils are performed to form an offset at least in the region of two opposite corners. The winding have legs, wherein half of the legs are located in a first radius and half of the legs are located in a second radius. The motor further comprises a housing having two end plates and supporting said rotor and stator.

Abstract: Disclosed herein is a spindle motor which is capable of more easily controlling an axial gap and levelness between the thrust plate of a rotating shaft and a sealing cap. The spindle motor includes a rotating shaft having a thrust plate which is perpendicularly inserted into the upper portion of the rotating shaft. A sleeve accommodates the rotating shaft and rotatably supports the rotating shaft. The sleeve is secured to a plate. A sealing cap is secured to the sleeve through laser welding in such a way as to face the upper surface of the thrust plate. At least part of the sealing cap is stepped towards the thrust plate to correspond to a degree of deformation occurring during the laser welding.

Abstract: A linear electric motor including a primary part having a flux guiding element on the end faces of the primary part, a three-phase winding on the primary part that produces a first magnetic field and a permanent magnet on each end face that produces a second magnetic field that is superimposed on the first field to reduce force ripple is disclosed. The primary part has tooth modules and also end-tooth modules. The end-tooth modules have no winding, are located on the end face, and are smaller in volume than and shaped differently from the tooth modules. The primary part is separated from a secondary part by an air gap, and the end-tooth modules are separated from the secondary part by an additional air gap.