Abstract: A rotating electric machine, including: a bowl-like housing having a through hole penetrated by a shaft and having a cutout portion in a part of an opening portion; a commutator fixed to the shaft; a base fixed to the housing by a clamp screw and having a tapped hole through which the clamp screw is inserted with a play; a brush disposed in the base and rubbing against the commutator; a plate having a joint portion to which a lead wire led outside is welded and fixed to the base; a grommet penetrated by the lead wire and engaged in the cutout portion of the housing; and a positioning unit which positions the lead wire to be welded in the joint portion.

Abstract: There is provided a stepping motor of low vibration realized by reducing cogging with a simple structure while maintaining the performances such as torque.

Abstract: A low cost, highly reliable linear oscillatory actuator comprising a yoke formed of magnetic material; an excitation coil wound on the yoke; and two permanent ring magnets arranged around the yoke and integrably set face-to-face on a common magnetic pole along the axial direction.

Abstract: A rectifier of an alternator includes positive and negative rectifier elements. Each rectifier element has a lead wire connected thereto, and a vicinity of a portion connecting the lead wire to the element is sealed with a material such as resin or rubber, forming a sealing portion. To protect the sealing portion against harmful components contained in cooling air blown to the rectifier, a conically shaped terminal connected to the lead wire is disposed to face and cover the sealing portion. The terminal has a sufficiently large surface area for dissipating heat generated in a process of connecting the lead wire to the terminal by welding.

Abstract: A brush holder (100) for carrying a brush (102) and for providing adjustment of the brush relative to the commutator (104) of a dynamoelectric machine (105). The brush holder provides for adjustment of the gap (110) between the commutator and the brush, and for adjustment of the brush in the axial direction along the commutator. The brush holder also locks the brush at the desired position for operation in the dynamoelectric machine.

Abstract: To provide a bearing assembly having an electric power generating capability, that can be assembled compact in size and easily incorporated in a drive transmission system of an internal combustion engine, the bearing assembly having an electric power generating capability includes a rolling bearing 1 including an outer race 7 and an inner race 6 rotatable relative to the outer race 7, and an electric power generator 2 interposed between the inner and outer races 6 and 7 for generating an electric power by a rotation of the inner race 6 relative to the outer race 7. This bearing assembly may be used as a bearing in the drive transmission system of the internal combustion engine for rotatably supporting, for example, a crankshaft 4.

Abstract: A brushless vibration motor includes a base plate unit having a burring element extended from the base plate, and including a shaft having a first portion inserted into the burring element to be fixedly coupled to the base plate, a stator having at least one coil disposed on the base plate through which current flows, a rotor rotatably supported by a second portion of the shaft, and having a bearing slidably inserted around the second portion of the shaft, a bearing holder having an inside surface forcibly coupled to the bearing, and a yoke coupled to the bearing holder and having a magnet mounted on the yoke to be spaced-apart from the coils to generate a magnetic field with the coil, and a counterweight generating eccentricity, and a cover coupled to the base plate to enclose the stator and the rotor.

Abstract: The invention relates to a device (12) for tensioning a winding (9) of a stator (1), in particular a generator stator (1) of a power plant. The winding (9) includes a winding head (10). Several winding supports (13) are arranged at the front side (4) of the core (2). Each winding support (13) abuts against the front side (4) of the core (2) and via a pressure spring element (19) against the funnel-shaped outer side (14) of the winding head (10). The winding supports (13) are fixed at the winding head (10) in the circumferential direction and in the surface line direction of the winding head (10). The winding supports (13) are movable perpendicularly with respect to the outer side (14).

Abstract: A one-piece stator lead and terminal insulator for an oil cooled alternator comprises an arcuate plate having three cylindrical retainers positioned thereon for receiving stator terminals. The arcuate plate also includes three guides for guiding stator leads to the terminals. Furthermore, three rectangular holes are provided next to each of the guides. The rectangular holes receive insulating ties that encircle the stator leads and hold the stator leads to the plate, properly positioning the stator leads away from other conductors and housings within the alternator. Two flanges also extend from the plate to aid in assembly of the device and further act to properly position the stator leads away from other conductors and housings within the alternator.

Abstract: A brushless motor includes a motor housing, a stator, a positioning projection, and a groove. The stator is fitted in the motor housing and includes an outer core and teeth, which extend in the radial direction of the stator. A radially outward end of each tooth is coupled with the outer core. Each tooth has a predetermined width in the circumferential direction of the stator. The positioning projection is located on the inner circumferential surface of the motor housing. The groove is located on the outer circumferential surface of the outer core. The groove is arranged on a radial line that passes through the center of the width direction of one of the teeth. The positioning projection is fitted in the groove to determine the position of the stator with respect to the motor housing in the circumferential direction.

Abstract: A spindle motor having a bearing housing and a thrust bearing fitted in the bearing housing at the lower end of the latter, in which an inclined part is formed on the outer peripheral edge at the lower end of the thrust bearing, and the outer diameter part of the thrust bearing is fitted in a coupling bore formed in the end surface of the bearing housing, the end surface of the bearing housing being pressed uniformly in the axial direction over the entire circumference around the coupling bore to cause the bearing housing to plastically flow around the coupling bore in order to cover the above-mentioned inclined part of the thrust bearing. The above-mentioned covering part formed in the bearing housing through plastic flow can exhibit a high bonding strength between the bearing housing and the thrust bearing in the spindle motor without deteriorating the sealing ability of the spindle motor, due to a shearing force and a residual contact pressure of the covering part.

Abstract: An electric rotary machine includes a stator armature which comprises: a stator ring; a plurality of discrete salient poles each including a pole tooth and a coil, disposed inside the stator ring thereby forming a magnetic circuit, and fixed by a molding resin injected inside the stator ring from an injection port of a molding die; and a plurality of barrier walls. Each of the barrier walls is disposed between the injection port of the molding die and two coil terminal pins to which the coil has its both wire terminations connected respectively.

Abstract: In a multilayer brush composed chiefly of copper and graphite and incorporated therein with a solid lubricant, which consists essentially of two types of brushes, a high-copper-content part brush containing the copper in a large quantity and a low-copper-content part brush containing the copper in a small quantity, at least the high-copper-content part brush contains zinc in an amount of from 0.1% by weight to 5% by weight, and the zinc and the copper form an alloy. This can provide a multilayer brush having a superior durability, which can prevent the performance of motors from lowering, without use of the harmful substance such as lead, and may less undergo any wear due to mechanical and electrical sparkling of the brush.

Abstract: A stator core 1 is surrounded by a first insulating member 40 and a second insulating member 41. Locking protrusions 9 are formed on the outer periphery of the stator core 1, and the locking protrusions 9 form a keyway 11. A modular connector 2 includes a key part 21 that fits within the keyway 11 to secure the modular connector 2 to the stator core 1. Fastening pins 18 are embedded in the modular connector 2 to conduct electricity from a mating connector 91 and a lead line 93 to the resolver.

Abstract: The permanent magnet type reluctance electric motor includes a stator including a stator iron core and having armature coils placed inside slots, and a rotor provided with a plurality of magnetic barriers formed by cavities and placed on an inner side of the stator such that sections where a magnetic flux can easily pass (d-axis) and sections where a magnetic flux cannot easily pass (q-axis) are alternately formed, and made of a rotor iron core having permanent magnets in cavities. The rotor satisfies a relationship of PL/2&pgr;RWqave≧130, where Wqave [m] indicates an average thickness of the rotor iron core on an outer side in a radial direction of the rotor with respect to cavities arranged in a q-axis direction, L [m]; a width in a circumferential direction of the cavities, P; the number of poles and R [m]; the radius of the rotor.

Abstract: A stator according to the invention has an elastoplastic element, which is disposed between the winding and the pole cog and which secures the winding firmly to the pole cog, thus preventing vibrations.

Abstract: A contact-disk system is described having a rotatable contact disk and a plurality of contact elements, the contact disk having a plurality of paths and each contact element being assigned to one path. Two selected contact elements of the plurality of contact elements are always at the same electrical potential and glide on the same path. A windshield-wiper motor and a method for controlling a windshield-wiper motor are also described.

Abstract: In a watertight brushless fan motor of the present invention, a first pad 33 is disposed in a first space between a stator 1 and a circuit substrate 3, A second pad 35 is disposed in a second space between the circuit substrate 3 and a plate-like section 7c of a case 7. Spaces between the plate-like section 7c of the case 7 and a bearing supporting cylindrical section 7a are formed with an insulating resin in such a manner that the stator 1 and the circuit substrate 3 are included inside, thereby forming a molded part 31, With this arrangement, the watertight brushless fan motor is provided that can prevent occurrence of a crack in the outer surface of the molded part due to the so-called molding shrinkage of the insulating resin or expansion and shrinkage of the insulating resin caused by a change in ambient temperature.

Abstract: The invention relates to an electrical machine with a winding (5) comprising a wire (8) consisting of individually insulated conductors (9), these conductors being wires or strands, characterized in that the insulated conductors (9) extend in a zigzag pattern between the edges of the winding (5) said edges being in thermal conductive contact with a cooling medium.

Abstract: The present invention is an improved brush card consisting of a non conductive card having a commutator aperture, and a pair of tongue and groove connectors. Each tongue and groove connector consists of at least one pair of parallel channels formed on the card adjacent the aperture and extending along the card perpendicular to the commutator aperture, the card forming a pair of parallel opposing channel edges adjacent the parallel channels. A portion of the card forms an elongated tongue separating the pair of channels, the tongue having a distal end extending towards the commutator aperture and a proximal end opposite the distal end. The brush card also includes at least one conductive brush slidingly mounted to each tongue, the brush having opposite first and second sides, the brush having a central groove dimensioned to receive the tongue. Each brush also has a first groove extending along the first side of the brush, the first groove dimensioned to receive one of the channel edges.