Abstract: An alternator, such as for use in an electrostatic spray gun, comprises an electromagnetic alternator, a housing and an impeller. The electromagnetic alternator has a shaft. The electromagnetic alternator is disposed within the housing. The housing has an air aperture. The impeller is mounted to the shaft within the housing so as to be aligned with the air aperture. The impeller includes blades having curved leading and trailing edges. In one embodiment, each blade has a curvature so as to be perpendicular to the air aperture across an entire arc over which each impeller blade has a line of sight of the air aperture.

Abstract: A heat sink with incorporated pin fin arrangement means is preferably part of a cooling jacket assembly, used for cooling the electric machine assembly. In general, the cooling jacket assembly comprises an annular cooling jacket body (i.e. a heat sink (4)) preferably adapted for receiving a stator (3) of the electric machine. In addition, the heat sink (4) of a cooling jacket comprises at least one substantially cylindrical wall section with at least one group of incorporated unidirectional heat transfer protuberances (i.e. pin fin (42) arrangement in free-form formation), wherein the heat sink (4) in cooperation with the electric machine assembly forms an annular gap (i.e. a cooling channel) preferably adapted for coolant flow circulation. The heat sink (4) according to the invention is preferably casted or molded as one body part in a single operation; hence the cost effective solution of high performance heat sink (2) is achieved.

Abstract: The invention relates to an electric motor and a method for assembling the motor. Especially preferred is that the electric motor is for driving an antiroll stabilizer. The electric motor includes firstly a stator having at least one electromagnet and a rotor which can rotate about an axis relative to the stator. The electric motor also includes at least one bearing plate for receiving a bearing for rotatable mounting of the rotor. Disposed on the bearing plate is a retainer disc for retaining contacts. The contacts are for electrical connection of the at least one electromagnet of the stator and pass through the retainer disc. Fastening elements are used to fasten the retainer disc to the bearing plate. There is also a positioning arrangement for radial positioning of the retainer disc with respect to the bearing plate. According to the invention the positioning arrangement is designed for adjustable radial positioning of the retainer disc with respect to the bearing plate.

Abstract: A brushless motor includes a stator having a stator core; and an upper insulating bobbin connected to an upper face of the stator core, an upper surface of the upper insulating bobbin having a plurality of terminal fixing blocks and a plurality of wire through blocks, each terminal fixing block having a wire-through notch for positioning a wire and a terminal socket electrically connected with the wire. A first angle between a wire slot of each terminal fixing block and a radial direction of the upper insulating block is 50°-130°, and a second angle between a terminal socket of each terminal fixing block and a circumference direction of the upper bobbin is 50°-130°.

Abstract: An electric motor including a coil assembly having a plurality of coils which may be arranged in the shape of a cylinder. The motor further includes a rotor including a plurality of outer magnets configured as a first Halbach cylinder surrounding the coil assembly. An outer magnet housing of the rotor is coupled to and surrounds the plurality of outer magnets. A plurality of inner magnets are arranged as a second Halbach cylinder with the coil assembly being interposed between the plurality of inner magnets and the plurality of outer magnets. An inner magnet housing is coupled to the plurality of inner magnets and surrounds an output shaft.

Abstract: A brushless motor includes a printed circuit board having a plurality of locating holes therethrough; and an upper insulating bobbin including a plurality of locating bosses distributed along a circumference direction of an upper surface of the upper insulating bobbin. Each locating boss has a locating column projecting from a top surface thereof such that each locating column is inserted into a respective locating hole.

Abstract: A mounting bracket for a water cooled type alternator is provided. The mounting bracket includes a body, a plurality of bolts attached to the body, a plurality of pivot arms including a first pivot arm attached to a first bolt in the plurality of bolts at first end of the first pivot arm, and a link arm coupled to the body at a second bolt in the plurality of bolts.

Abstract: A BLDC motor for driving a cross flow fan in an air-conditioning application has an external rotor and an internal stator. The stator is a salient pole stator with insulated pole teeth and conductor coils. The inner diameter of the stator supports a single bearing. An electronic PCBA for control of the BLDC motor is optionally attached to the stator, all of which is encapsulated in a thermoset resin. The rotor comprises permanent magnet component(s) and a rotor frame. The rotor frame includes a stub axle that engages with the bearing element and features to provide torsional or rotational compliance between the rotor magnets and the fan. A level of compliance is provided between the bearing element and the stator to allow for angular misalignment between the rotational axis of the fan and the stator.

Abstract: Active vibratory control device comprising an armature, a movable element comprising a coil and mounted so as to be able to slide with respect the armature, a spring connecting the armature to the movable element. The armature comprises an electrical supply circuit and the spring comprises a conductive part that connects the electrical supply circuit to the coil.

Abstract: By employing a combination of magnetic forces and those from electrostatic fields, a new stabilizer is able, unlike those employing dynamic effects, to function at any speed with no need for sensors or dynamically generated electrical currents. Embodiments are provided that stabilize the radial, axial and tilt instability. In addition to its use for stabilization, the radial stabilizer described herein also functions as an eccentricity detector.

Abstract: An inverter-integrated electric compressor according to the present invention is provided with an inverter case for forming an inverter-accommodating space for housing an inverter device, and an inverter cover configured to close an opening of the inverter-accommodating space. The inverter case is assembled with the inverter cover using a spigot joint, and when the inverter cover closes the opening of the inverter-accommodating space, an end-face-opposing face that opposes an end face of the inverter cover is formed. Such an inverter-integrated electric compressor may make it unlikely for the end face of the inverter cover to be exposed to corrosive environments, and may suppress corrosion of the end face of the inverter cover.

Abstract: In each coil (10), between a first radial section formed by a winding-start section (10a) and a second radial section formed by a winding-end section (10b) of a winding (10A), the circumferential lengths of the winding lap sections formed by said winding change in a continuous or stepped manner. For a first coil, the sequences within two slots (22) of the winding constituting the first coil are reversed with respect to one another by a twisted section (10d) between a first coil end (12a) and a second coil end (12b) of the first coil. The first coil and next second coil form a lap winding in which the twisted sections of the first and second coils are three-dimensionally entwined. The lap winding of said twisted sections continues for the third and subsequent coils, and the first coil end and the second coil end of each coil are continuous without spaces at the end surfaces of a core (20).

Abstract: Electric motors are disclosed. The motors are preferably for use in an automated vehicle, although any one or more of a variety of motor uses are suitable. The motors include lift, turntable, and locomotion motors.

Abstract: An electric machine including a stator, a rotor surrounded by and rotatable relative to the stator, a supply terminal assembly, and an electronic module electrically connected to the stator. The electronic module includes a terminal having at least one bonding region. An electrical buss is attached to the supply terminal assembly, and includes a first and second conductor portions each having a connection region joined to a bonding region of the terminal of the electronic module. The terminal of the electronic module is electrically connected to the supply terminal assembly by the first and second conductor portions. Also disclosed is a method for manufacturing such an electric machine.

Abstract: A motor-driven fluid machine has three motor wires. The innermost one of the three motor wires in the radial direction of a rotary shaft on a specific section of an outer end portion of a coil end is defined as a first motor wire. The first motor wire has a first extension, which extends from an inner side toward an outer side in the radial direction of the rotary shaft at a position between the specific section and a downstream side in the extending direction of the motor wires, and a second extension, which is continuous from the first extension and extends from the outer side toward the inner side in the radial direction of the rotary shaft to be connected to a corresponding conductive member.

Abstract: A low resistance generator includes a series of stator plates and rotors. Stator plates include the coils wrapped around coil spools. The stator plates and coil spools are made from non-conductive and non-ferromagnetic material. The coils are exposed to the surrounding air and cooled convectively by airflow caused by a rotation of the rotors in the gaps. Rotors house magnets and are disposed within gaps between the stator plates. The rotors are also made of non-conductive and non-ferromagnetic materials. The magnets may be disposed on the rotors to form columns. Two columns of magnets are joined together to form one or more closed magnetic loops, each column being joined by a gauss bridge disposed at first and second end rotors.

Abstract: Self-centering electromagnetic transducers, such as linear motors and generators, are disclosed. In one embodiment, an electromagnetic transducer includes an outer yoke made of a ferromagnetic material, and a coil assembly including a plurality of loops of electrically conductive wire, wherein the coil assembly is substantially surrounded by the outer yoke. The electromagnetic transducer further includes a magnet, and an inner yoke made of ferromagnetic material. The magnet is disposed within the outer yoke such that the coil assembly surrounds the magnet. The inner yoke is disposed within the magnet, and the magnet is free to translate. The electromagnetic transducer further includes at least one high-reluctance zone positioned within the outer yoke and/or the inner yoke. In some embodiments, the electromagnetic transducer includes one or more actuators that vary a width of one or more high-reluctance zones to change a spring rate of the electromagnetic transducer.

Abstract: A brush-commutated direct-current motor comprises a stator which includes a plurality of exciter poles, a rotor rotatable relative to the stator about an axis of rotation, a plurality of pole teeth arranged on the rotor, and grooves arranged between the pole teeth, wherein the pole teeth are separated from each other by the grooves along a circumferential direction around the axis of rotation. On the pole teeth coil windings are arranged. A commutator is arranged on the rotor and includes a plurality of lamellae, wherein each coil winding is connected with one of the lamellae via a first connecting arm and is connected with another one of the lamellae via a second connecting arm.

Abstract: An axial flux brushless permanent magnet electrical machine having a stator and at least one rotor. The rotor includes a Halbach array of magnets with at least four magnets per magnetic cycle. The rotor magnets are contained within pockets in the rotor. The pockets are formed with magnet pocket walls being radial walls, active surface walls, and/or inactive surface walls where the walls retain the magnets within the pockets.

Abstract: A vibration motor includes a fixation part having a housing forming an accommodation space and at least one coil fixed in the accommodation space, a vibration part including a magnet and a weight for accommodating the magnet, an elastic connecting part for suspending the vibration part in the accommodation space; a damping element accommodated in the weight; a limiting column penetrating the damping element and extending along a direction from the magnet to the coil, two ends of the limiting column being fixed to the housing.