Abstract: The aim of the invention is to better adapt the power range of a linear motor to specific applications. For this purpose, the secondary part (2) is subdivided into at least one first (3) and one second section (4) in the direction of travel (15) of the primary part (1). The secondary part (2), in the first section (3), has a different shape than in the second section (4) and/or is produced from a different material. In this manner, different speeds of the primary part (1) can be achieved on the traveled distance independent of the actuation of the primary part. Optionally, cage windings can be inserted in a section of the secondary part so that said secondary part can be used for passive breaking.

Abstract: An electrical machine comprises a rotor assembly comprising a first set and a second set of rotor extensions, and a stator assembly comprising a first set and a second set of stator extensions. Rotating the rotor assembly about an axis alternates the rotor assembly between a first position and a second position. In the first position, each of the first set of rotor extensions transfers flux to one of the first set of stator extensions, and each of the second set of rotor extensions transfers flux to one of the second set of stator extensions. In the second position, each of the first set of rotor extensions transfers flux to one of the second set of stator extensions, and each of the second set of rotor extensions transfers flux to one of the first set of stator extensions. The electrical machine is at least one of a transverse flux machine or a commutated flux machine.

Abstract: A motor includes a stator, a rotor, a shaft (50) and two end caps (10, 40), which are assembled together. According to the precision requirements, the outer circumference of the rotor core (20), and the outer circumference, the inner bore (33), the end surfaces of the stator core (30) are subjected to grind. The ground rotor core (20) is nested in the ground stator core inner bore (33), wherein the punched outer diameter of the rotor core (20) is equal to the punched diameter of the inner bore (33) of the stator core (30). The shaft (50) is pressed directly into the shaft bore of the rotor core (20) so as to tightly fit with the shaft bore of the rotor core (20).

Abstract: A motor mounting device includes a polymeric motor housing having a cylindrical housing section for receiving motor components including a rotor. The housing section incorporates a detent feature disposed along the interior surface, with the interior surface inclined to gradually converge in a distal direction. The housing further has a distal end section that includes a first bearing seat centered on the housing axis. A rotor retaining member has an annular outer surface terminating at an arcuate peripheral edge, and comprises a second bearing seat. The rotor retaining member is insertable distally into the cylindrical housing section, following insertion of a rotor, to engage the first and second bearing seats respectively with distal and proximal bearings on a rotor shaft, to secure the rotor for rotation relative to the housing. During such insertion, the retaining member outer surface and the interior surface of the cylindrical housing section interact to center the retaining member.

Abstract: A motor stator mounting device includes a plastic motor housing having a cylindrical housing section for receiving the stator. Longitudinal ribs along an inside surface of the housing section are inclined to converge gradually in a distal direction, thus tending to center a stator inserted distally into the housing section. An annular stator retaining member includes a plurality of distally extending centering features. Outside surfaces of the centering features interact with an interior surface of the housing section to center the retaining member as it is inserted distally. Inside surfaces of the centering features interact with a proximal region of a previously inserted stator, such that distal insertion of the retaining member both axially positions and radially centers the stator relative to the cylindrical housing. The retaining member is secured to the housing with a series of sonic welds to positionally fix the stator inside the housing.

Abstract: A vane driving device includes: two boards each having an opening and defining a blade chamber therebetween; a blade changing an area of the opening and housed in the blade chamber; a drive source for driving the blade, the drive source including: a coil winded around a stator and exciting a stator; a rotor rotatably supported by a rotary shaft, rotatable in conjunction with the rotary shaft, and magnetized to have different polarities in a circumferential direction; and a rotor pinion meshing a driven member, and integrally formed in the rotary shaft; and a printed substrate electrically connected to the coil. The two boards define a drive source chamber housing the drive source therebetween. At least one of the two boards has an opening for escaping the coil outwardly from the drive source chamber. The printed substrate is arranged on a outer wall surface opposite to the drive source chamber.

Abstract: In a rectifier, a high-side heatsink in which high-side rectifying elements are mounted provides a common positive terminal attached to the high-side heatsink. A low-side heatsink in which the low-side rectifying elements are mounted provides a common negative terminal. A terminal block assembly includes a plurality of terminal blocks integrated with each other. The plurality of terminal blocks hold the conductive members. A fixing mechanism directly fixes one of the plurality of terminal blocks to the high-side heatsink. The one of the plurality of terminal blocks holds at least one of the conductive members. The at least one of the conductive members is connected to one of the high-side rectifying elements. The one of the high-side rectifying elements is located closest to the output terminal in all of the high-side rectifying elements.

Abstract: An exemplary voice coil motor includes a hollow stationary magnetic field generator, a movable magnetic field generator, two elastic members, a hollow case and a base. The movable magnetic field generator is received in the stationary magnetic field generator. The two elastic members are adjacent to two ends of the stationary magnetic field generator. The case and the base serve as a package for all of the above elements. The case has a top sheet. The movable magnetic field generator has guiding posts slidably received in the top sheet, and stopping bars. The stopping bars of the movable magnetic field generator are capable of limiting the movement of the movable magnetic field generator toward the top sheet by abutting the top sheet.

Abstract: The invention relates to a secondary part (2, 3) of a linear electrical machine (5), wherein the secondary part (2, 3) has permanent magnets (11) and a mount (13). The secondary part (2, 3) has spacer elements (9), wherein an installation height of the secondary part (2, 3) is also determined by means of the spacer elements (9). Tolerances of the installation height can be maintained more easily by means of the spacer elements. In a method for manufacturing a secondary part (2, 3) of a linear electrical machine (5), the spacer elements (9) are cast together with the mount (13) on which the permanent magnets (9) are arranged such that the permanent magnets (9) are embedded in the casting compound (15) and the casting compound (15) forms the surface of the secondary part (2, 3) in the region of the permanent magnets (11), wherein the spacer elements (9) protrude out of the casting compound (15) such that part of the surface of the secondary part (2, 3) is also formed by the spacer elements (9).

Abstract: A vehicle drive device includes a motor generator (MG2), a power control unit controlling the motor generator (MG2), and a case housing the motor generator (MG2) and the power control unit. The power control unit includes a first inverter driving the motor generator (MG2) and a voltage converter boosting a power supply voltage to apply the voltage to the first inverter. A reactor L1 which is a component of the voltage converter is disposed such that at least a portion of a core comes into contact with the case for heat exchange. Consequently, the heat is dissipated to the case having a large heat capacity for integral housing, to thereby allow the heat dissipation performance of the reactor (L1) arranged in the limited space to be ensured.

Abstract: Disclosed is a highly heat-resistant core which has a dust core as a base body. A dust core obtained by press-molding magnetic powder particles each of which are covered with an insulating film is used as the base body. An inorganic heat-resistant insulating film is formed on at least a part of a surface of the dust core which faces a winding wire.

Abstract: An object of the present invention is to provide a rotor magnet that is capable of adjusting attraction of magnet that is mounted in a spindle motor, a spindle motor including the same, a recording and reproducing apparatus, and a jig for manufacturing the same, with a simple configuration. A rotor magnet is an approximately annular member that is attached to a rotor hub rotating around a shaft forming a part of a spindle motor. The rotor magnet is magnetized such that magnetization properties of axially top and bottom surfaces of the rotor magnet are different from each other.

Abstract: A small size permanent magnet direct current motor has a housing accommodating a permanent magnet stator and a wound rotor. The rotor has a rotor core with a diameter of 23 mm±3 mm and 12 poles and a cylindrical commutator. The motor has an output power of more than 25 watts.

Abstract: In an insulator to be inserted into each slot to be attached to adjacent teeth formed at a rotor or a stator of an electric rotating machine, the insulator is composed of insulator segments that are made divisible in a longitudinal direction parallel to a rotational axis of the rotor at a position corresponding to 2 slots and are made divisible in a lateral direction perpendicular to the rotational axis of the rotor, the insulator segments have surfaces to be coupled to each other of a same shape in the lateral direction, and the insulator segments have a creepage distance that is made longer than a distance in the lateral direction, thereby enabling to elongate the creepage distance and to improve work efficiency.

Abstract: A dynamoelectric machine insulator includes, a body having a plurality of holes therethrough at least some of the plurality of holes being receptive of a lead such that a lead extending through each of the plurality of holes is electrically isolated from a lead extending through each of the other of the plurality of holes, and at least one channel in the body extending arcuately along a perimetrical extent of the body. The at least one channel configured and dimensioned to insulate at least one lead routed therein.

Abstract: To improve resistance of a motor device against an organic solvent and to suppress degradation in performance of the motor device with time. In a motor device, an excitation magnet is formed using a hollow-cylinder shaped anisotropic bonded magnet 13. This bonded magnet 13 is press-fitted in a housing 12 and is held. The bonded magnet 13 is formed of a hollow-cylinder shaped anisotropic rare earth bonded magnet which is obtained by compounding an anisotropic rare earth magnet powder with a phenol-novolac type epoxy resin, followed by molding. The anisotropic rare earth bonded magnet 13 is press-fitted along an inner peripheral portion of the housing 12, and on an exposed surface layer of the anisotropic rare earth bonded magnet press-fitted in the housing, a coating layer is formed by an infiltration treatment using a polyamide-imide-based resin.

Abstract: An electronic control unit (ECU) for a motor is mounted to a drum housing or the like in a plane parallel to the plane defined by the surface of the drum housing on which the motor is mounted. The housing for the motor includes an aperture window. Power contacts from the ECU mate with contacts from the motor through the window. Hall-effect sensors attached to the ECU can extend through the aperture to be proximate a ring magnet attached to the armature shaft of the motor. Alternatively, flux guides attached to the drum housing to transmit magnetic flux information from the motor to the Hall-effect sensors. Alternatively, optical sensors attached to the ECU can detect rotations of a reflector ring attached to the armature shaft through the window.

Abstract: Disclosed is a terminal assembly for a stator of a dynamoelectric machine. The terminal assembly includes a at least five electrically conductive tracks arrayed in a single layer, each track configured and positioned for electrical communication with corresponding leads extending from the stator providing electrical connection between at least one lead of stator leads and a rectifier bridge. The tracks are at least partially encapsulated in a nonconductive casing.

Abstract: A segmented electric generator/motor, such as for a wind powered generator, in which the rotor and/or stator is subdivided in the circumferential direction into segments disposed adjacent to one another. Additionally, the stator segments are accessible via and the rotor segments can be installed and removed in the axial direction in rotor segment mounts provided in the rotor ring. Each rotor segment preferably includes a base shaped to prevent radial and circumferential or tangential motion of the rotor segment while permitting axial motion in the rotor segment's respective mount. The rotor ring segment mounts are preferably sized to allow removal of stator segments through the openings.

Abstract: A submersible pump motor having an electroless nickel-boron coating applied to the sleeve and/or bearing.