Abstract: The invention relates to an electric motor with a housing, a rotor, a stator, an axle, and a bearing region with two bearings, where both bearings are arranged at the same side of the rotor in axial direction, wherein the housing is built in two parts, such that one part contains rotor and stator and the bearing region and a second part is designed as a cover at the side far from the bearing region.

Abstract: An electric motor includes a rotor shaft arranged in a casing and having an axial hollow bore formed therethrough for passage of lubricating oil, a rotor, a stator, a pair of bearings each having an inner race and an outer race, a pair of bearing fixing parts supporting the rotation of the rotor shaft, and bearing cooling devices each having a cylindrical heat dissipation portion fixedly secured to the rotor shaft so as to be in contact with either one of end faces of the individual inner races, the heat dissipation portion extending from the one end face of each inner race to a side opposite to the bearings. A pair of spaces between rotor-side end faces of the bearings and the bearing fixing parts, respectively, are in communication with ring gaps between the heat dissipation portions and the rotor shaft, respectively, through radial communication holes in the rotor shaft.

Abstract: A motor comprises a stator having a stator core and a stator winding wound on the stator core and integrally molded with insulation resin, a rotor provided with a shaft, a first bearing and a second bearing for supporting the shaft, a bracket connected to the stator and retaining at least one of the first bearing and the second bearing, and a conductive member short-circuiting between the stator core and the bracket.

Abstract: A sleeve is mounted to an output terminal so as to be fitted over an output extraction end and is fastened between a cylindrical portion and a relay member mounting nut screwed onto an external thread portion such that the sleeve is in a close state of surface contact with the cylindrical portion and the relay member mounting nut. A wiring harness terminal is fastened between the relay member mounting nut and a wiring harness terminal mounting nut screwed onto the external thread portion such that the wiring harness terminal is in a close state of surface contact with the two nuts. In addition, a molded portion is molded so as to cover an outer peripheral surface of the sleeve, and is mounted such that a portion of the molded portion projecting outward from the sleeve is fitted over an output extraction end of the cylindrical portion.

Abstract: Devices and methods are provided for a rotor assembly and an electric motor. One embodiment for a rotor assembly includes a first rotor including a first interface surface and a second rotor including a second interface surface corresponding to the first interface surface. Also, the first rotor is positioned with the first interface surface in direct physical contact with the second interface surface of the second rotor.

Abstract: A water-resistant electric motor includes a housing for receiving an electric motor armature therein and an end cap for closing an open end of the housing. The housing includes a drive shaft aperture within a cylindrical recess that receives a journal bearing and a ring seal. The end cap includes a wire access hole for receiving power supply wires. Surrounding the wire access hole is a ridge with cut-outs. A wire cover plate is seated on top of the ridge and includes cut-outs that correspond to the cut-outs in the ridge so that the power supply wires are accommodated therein when the cover plate is secured to the ridge. The wire access hole includes a grommet to seal the hole.

Abstract: In a terminal of an electric motor, a branch projects from a terminal connection on a side opposite from an extension. A projecting end side of the branch extends in an installation direction of the terminal, which is a direction for installing the terminal to a housing. The terminal is tiltable about a portion of the extension, which serves as a fulcrum, to cause abutment of the branch against a wall surface of the housing when the terminal connection receives a force in a direction opposite from the installation direction.

Abstract: The stator core of a motor comprises an annular back core, and a plurality of tees created separately from the back core and secured onto the inner periphery of the back core. A stator coil is wound on each of the tees by a distributed or concentrated winding method. The stator core and stator coil are formed by molding.

Abstract: A compact electrical motor (10) especially suitable for being used for applications that do not require a constant revolution speed and a precise position control comprising a rotor (24), a stator (26), at least one electrical winding (28) and at least one further electrical winding (30) arranged coaxially to said stator (26), a shaft (18) whereto the rotor (24) is fixed, with said motor powered in alternating current, with constant number of revolutions and frequency synchronized.

Abstract: A cooling fan includes: a casing having a base wall and a surrounding wall that extends transversely from the base wall, and that has an inner wall surface and a top opening; a stator mounted on the inner wall surface of the surrounding wall; a shaft protruding from the base wall; a fan blade unit including an annular hub that is journalled rotatably to the shaft, a supporting ring that surrounds the hub, and a plurality of blades that extend between and that are connected to the hub and the supporting ring; a rotor mounted on the supporting ring; and a cover in the form of a circuit board mounted on the top end face of the surrounding wall for covering the top opening in the casing and including a substrate formed with a central opening.

Abstract: A radial core type double rotor brushless direct-current motor is provided in which a double rotor structure is employed with inner and outer rotors which are doubly disposed and thus a stator core is completely divided. The motor includes a rotational shaft which is rotatably mounted on a housing of an apparatus, cylindrical inner and outer yokes which are rotatably mounted on the center of the housing, inner and outer rotors including a number of magnets which are mounted with the opposing polarities on the outer surface of the inner yoke and the inner surface of the outer yoke, and a number of cores assemblies which are installed between the inner and outer rotors in which a number of coils are wound around a number of division type cores, respectively.

Abstract: A stator position adjustment method for a motor drive device that includes a motor case, a rotor shaft supported by the motor case in order to rotate a rotor inside the motor case, and a stator disposed at an outer circumference of the rotor concentrically with the rotor and having a configuration in which the stator is tightened and secured to the motor case by a tightening unit that tightens the stator along a rotor axis. The method includes the steps of setting a first tolerance range as a maximum tolerance range of a stator axis in which a first gap is formed between an outer circumference surface of the stator and an inner circumference surface of the motor case; measuring a position of the stator axis; and adjusting the position of the stator axis within the first tolerance range based on a measured position of the stator axis.

Abstract: A locking structure for an upper cover and an outer housing of a motor, the motor comprises an outer housing, an upper cover and at least two locking members. The upper cover is mounted on one end of the outer housing, and the locking members are locked in the outer housing by screws that pass through the upper cover, such that the upper cover and the outer housing are locked with each other stably and easily.

Abstract: Mounts can be provided at the four corners of a bottom portion of an engine generator. Projections for mounting handles can be provided at a top portion of the engine generator in vertical alignment above the mounts. The bottom face of each mount can be formed with a fitting groove having an open end. Fitting the projections in the fitting grooves allows stacking plural engine generators. The mount can be constituted with a bottom portion, a side portion, and a reinforcing metal fitting. The projections can be disposed on a front frame and a rear frame, respectively, each formed in one body. The mounts can also be attached to the front frame and the rear frame.

Abstract: The present invention relates to a sliding-contact holder (8) for an electric motor, which has a cylindrical motor housing (1), a front housing cover (2), a rear housing base (3), a rotor shaft (4), a rotor (5), a commutator (6), a stator (7) and a sliding-contact holder (8). The sliding-contact holder (8) comprises at least two holder elements, which each bear at least one sliding contact (11). The two holder elements are inserted individually into the cylindrical motor housing (1). Owing to its design, the sliding-contact holder (8) saves on space and can easily be inserted into the motor housing (1).

Abstract: In the stator of a electric rotary machine in which heat conductive insulation resin is filled at the end portions of a stator coil, the material of a stator core, the stator coil, the heat conductive insulation resin and a frame is selected such that a linear thermal expansion coefficient ?1 of the stator core, a linear thermal expansion coefficient ?2 of the stator coil, a linear thermal expansion coefficient ?3 of the heat conductive insulation resin being filled and a linear thermal expansion coefficient ?4 of the frame satisfy a relation that ?1<?2 <?4??3. A cooling medium path is integrally formed within the frame made from aluminum through die casting molding.

Abstract: A matrix converter (3) for the conversion of a polyphase alternating current (6) into a desired alternating output current (7) in which m phases of the polyphase alternating current (6) are converted into alternating output current with n (n<m) phases of a load by a multiple number of controllable bidirectional switches (4). The converter includes at least one stage (8,9), and in that at least one stage (8,9) of the converter each phase (6) of the polyphase alternating current (6) is controlled by a controllable bidirectional switch (4).

Abstract: A coil of a winding is wound around teeth of an armature core for a predetermined number of times in a motor. A start lead of the winding connects between the coil and a corresponding start segment among a plurality of segments of a commutator. A finish lead of the winding connects between the coil and a corresponding finish segment among the plurality of segments. The finish segment is located adjacent to a diametrically opposed one of the plurality of segments, which is circumferentially displaced by about 180 degrees from the start segment and is thereby diametrically opposed to the start segment.

Abstract: At least one cooling duct is provided for a motor that includes a frame. The cooling duct has a wall supported by the frame that, in turn, comprises an arcuate surface portion and a non-arcuate surface portion that together define a bore. A method of increasing the transfer of heat away from a motor is also presented.

Abstract: A rotary actuator including: a housing that rotatably supports thereinside a rotor shaft of an electric motor; an eccentric shaft portion that is provided on a protruding end portion of the rotor shaft that protrudes outside the housing; an external gear that is rotatably supported on the eccentric shaft portion via a bearing; an internal gear that is fixed to an outer surface of the housing and meshes with the external gear; and a transmitting portion that is provided on the external gear, and transmits rotation force to an external output shaft.

Abstract: An alternator for use in an automobile is driven by an internal combustion engine. The alternator includes a pulley that is coupled to a rotating shaft of the engine via a driving belt such as a poly-V belt. Plural pulley grooves to be engaged with the driving belt are formed on the pulley between a front flange and a rear flange. A projected surface of a front frame is located around the outer periphery of the rear flange, so that the driving belt is correctly positioned between the front and the rear flanges, guided by the projected surface. Two overlaps in the axial direction between the pulley and the front frame are formed to reduce an amount of water entering into the alternator through a gap between the pulley and the front frame.

Abstract: A power tool has an electric motor that includes a commutator, with which at least one commutator brush is acted upon with spring force via at least one commutator spring in the direction of a non-rotatable collector of the commutator. At least one auxiliary tool for adjusting the commutator spring is located on a component of the power tool.

Abstract: In order to obtain an electromagnetic rotating machine of lightweight and high energy efficiency, which produces big torque for rotating a large-diameter fan, a coil A and coil B as excitation coils are disposed on an inner peripheral surface of a fan casing so as to face an outer circumference of the fan, and a coil M as an armature coil crosses at a central portion and is disposed on the outer circumference of the fan. The relationships |Iai|=|Iai+1| and Iai=?Iai+1, or |Ibi|=|Ibi+1| and Ibi=?Ibi+1 are obtained respectively for the coil A or coil B by a current control device (not shown). Moreover, the coil A and coil B are subjected to excitation control such that the direction of effective electromagnetic force, which is generated by an interaction between an effective magnetic field formed by the coil A and effective induced current applied to the coil M by the coil B, corresponds to the direction of rotation of the fan.

Abstract: A motor includes a sensor which magnetically detects an angular position centered about a central axis of a rotor core with respect to an armature. The sensor preferably includes a yoke which has a substantially annular shape, is made of a magnetic material, is arranged substantially perpendicularly to the central axis and is affixed to a shaft, a sensor magnet affixed at the yoke, a magnet cover which covers a surface of the sensor magnet other than a portion in contact with the yoke, a first Hall element and a second Hall element both of which are arranged facing in an axial direction a surface of the sensor magnet opposite from a surface thereof at which the yoke is arranged. Since the sensor magnet is covered by the yoke and the magnet cover, even when the sensor magnet is damaged, the damaged sensor magnet is prevented from damaging other components of the motor. By virtue of such configuration, the reliability of the motor is improved.

Abstract: An electronic module for a rotary electrical machine which applies to any type of polyphase rotary electrical machine, synchronous or asynchronous, such as alternators or alternator starters, and also whether it is a case of electrical machines for motor vehicles and driven for example by belt, with cooling by air, liquid or any other solution that can be envisaged.

Abstract: The invention relates to an electromotive drive comprising an electric motor with a commutator that is located in a motor housing, in addition to gearing that is flange-mounted on the electric motor. In the drive, the armature shaft passes through an opening into the interior chamber of a gearing housing. A screening element is fixed onto the shaft to rotate with the latter. The screening element almost completely seals the opening against abraded carbon particles or dust from the brushes. The screening element also carries a control magnet that co-operates with a sensor of the motor control module.

Abstract: The invention relates to a claw pole generator comprising a claw pole rotor, two magnet wheel halves (21, 23) which are mounted on a drive shaft (15) and are provided with claw-shaped magnet poles (22, 24) that mesh with each other, and an annular closing member (10) located between adjacent magnet poles (21, 23). The magnet wheel halves (21, 23) can be inserted into pockets (11) of the closing member (10) along with the magnet poles (22, 24) thereof such that the closing member (10) overlaps the magnet poles (22, 24) on the edge in at least some areas. Also disclosed is a closing member (10).

Abstract: A motor includes a housing having a substantially cylindrical shape accommodating therein a stator portion and a rotor portion. The housing includes a housing body having an opening at an upper side thereof, and a lid portion arranged between an armature and a sensor so as to close the opening of the housing body. Since the lid portion is made of a magnetic material and is arranged between the armature and the sensor, a magnetic effect on the sensor caused by a magnetic force generated at the armature is minimized. By virtue of such configuration in which the lid portion of the housing functions as a magnetic shield, the motor can be smaller in the axial direction compared with a configuration in which an extra layer of magnetic shield is arranged.

Abstract: A mounting frame for an electric motor includes tabs projecting laterally from the mounting frame for mounting a stator of the electric motor to a mounting surface. Between the tabs, the mounting frame includes stop areas that define the position of the stator with respect to the mounting surface. In an electric motor having such a mounting frame, the frame is connected directly to the core stack of the stator of the electric motor.

Abstract: An electric motor includes a motor enclosure, a motor-bearing assembly, a motor control unit, a mid shield, and a bearing. The motor-bearing assembly is configured for placement within the motor enclosure and has a shaft extending therefrom. A portion of the motor control unit is configured for placement within the motor enclosure. The mid shield is configured for placement within the motor enclosure between the motor control unit and the motor-bearing assembly and further configured to engage the shaft. The bearing is configured to seat within the mid shield and provide at least a portion of the engagement between the shaft and the mid shield.

Abstract: A cooling module includes a shroud (38) having an integral cover (42). The cover receives bearing structure (40). A fan (36) is provided for moving air. A rotor and stator assembly (30) has an opened end and includes a stator (29) having permanent magnets. A rotor (31) includes a lamination stack (16), windings (21), a commutator (20); and a shaft (18). The rotor is associated with the stator so as to rotate with respect thereto. One end (34) of the shaft is coupled with the fan and another end (39) of the shaft is received by the bearing structure. A brush and connector unit (52) is associated with the cover of the shroud and includes brushes (58) associated with the commutator, and an electrical connector (62). The cover covers the opened end of the rotor and stator assembly and covers at least a portion of a brush and connector unit.

Abstract: A ceiling fan D.C. motor includes a stator and a rotor fitted around the outer circumference of the stator. The rotor is composed of a holder, annular base, a plurality of permanent magnets and a cover. The holder has its circumferential edge provided with an annular wall formed inside with an accommodating space, and its upper side formed with an opening. The annular base is secured inside the circumferential wall of the holder and has its circumferential edge disposed with a plurality of engage studs spaced apart, extending longitudinally toward the opening of the holder and respectively formed inside with an insert hole. The permanent magnets are respectively shaped as an arcuate plate with a preset thickness to be respectively positioned between every two adjacent engage studs, restrictedly fixing the permanent magnets in position.

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: An alternator (AC generator) to be mounted on a vehicle comprises slip rings, brushes, a brush holder, a rear cover, and sealing members. The slip rings are fixed on a rotary shaft and rotatable together with the rotary shaft. The brushes are slidable on the slip rings and the brush holder accommodates the brushes therein. The slip-ring cover covers the slip rings as well as the brush holder and the rear cover covers electronic components including the brushes. The sealing members give a sealing performance to an inner space containing slid portions of the brushes on the slip rings. The rear cover, the brush holder, and the sealing member have a ventilating passage for positively causing an flow of air from the inner space containing the slid portions of the brushes on the slip rings to an outside of the alternator.

Abstract: The invention relates to an electric motor (10) and gearing/drive unit (12) for actuators in a motor vehicle, comprising an armature shaft (32) mounted inside a pole casing (18), which has a jacket (20) and, on at least one face (22, 24), a bearing cover (26, 28) for accommodating a bearing (30) for the armature shaft (32). At least one radial recess (42) is formed on the pole casing (18) that, after the complete assembly of the pole casing (18), is suited for the insertion of at least one radial fastening web (53) of a gearing interface (15) inside the pole casing (18) in order to fasten the electric motor (10) to the gearing interface (15). The invention also relates to a method for producing an inventive gearing/drive unit.

Abstract: The invention relates to an electric motor (10) and to a method for producing said electric motor, especially for adjusting mobile parts in a motor vehicle. Said electric motor comprises a rotor (12), a lower housing part (16) and an upper housing part (18) which can be radially assembled in relation to the rotor (12), and at least two permanent magnets (22) that are coupled to each other by means of a magnetic feedback element (24). Said feedback element comprises a lower feedback sheet (28) and an upper feedback sheet (30), the upper feedback sheet (30) having a stop face (40) that rests on a mating stop face (42) of the lower housing part (16).

Abstract: The invention concerns a rotary single-phase electromagnetic servo actuator consisting of a rotary actuator designed to move a mobile member along a limited travel, including a 2N pole stator structure, N being equal to 1 or 2, and at least one field coil, said stator structure being made of a material with high magnetic permeability, and a rotor having a ferromagnetic yoke and a thin magnetized portion consisting of 2N pairs of axially magnetized poles, in alternate directions and a rotor angular position sensor. The invention is characterized in that the position sensor has a magnetic field emitter integral with the yoke and a receiver for the magnetic field stationary relative to the stator structure.

Abstract: A bottom portion side rib and a flange portion side rib are respectively formed on the bottom portion and the flange portion of the inner cover. The bottom portion side rib includes a plurality of bottom portion side radial ribs and a plurality of bottom portion side circular ring shaped ribs connecting the plurality of bottom portion side radial ribs. The flange portion side rib includes a plurality of flange portion side radial ribs and a flange portion side circular ring shaped rib connecting the plurality of flange portion side radial ribs.

Abstract: An adjustable bent housing comprises a stator connector, an adjustable housing having a first axial deviation and a first offset point and a plurality of spaced teeth, a crown which is disposed between the stator connector and the adjustable housing, and has a plurality of spaced teeth which are complementary to the adjustable housing teeth, means for rotatably engaging the crown to the stator connector and a slotted mandrel disposed within the crown and having a threaded connection to the stator connector at one end, and a threaded connection to the adjustable housing at the other end. The slotted mandrel has a second axial deviation and a second offset point The first offset point and the second offset point are aligned when the adjustable bent housing is assembled, creating a single offset point.

Abstract: [Problem] In a vehicular rotating electrical machine apparatus mounted in an electric vehicle or a hybrid electric vehicle, a rotating electrical machine apparatus in which a rotating electrical machine and an inverter unit to control the rotating electrical machine are integrated is miniaturized, and its torque characteristic and efficiency are improved. [Means for Resolution] Since an inverter unit 4 is cooled by cooling air forcibly formed by a cooling fan 28, the inverter unit 4 is efficiently cooled. Then, heat radiating fins 401a, 402a and 403a of heat sinks 401, 402 and 403 can be miniaturized, and consequently, the inverter unit 4 is miniaturized, and mountability of the inverter unit 4 to a rear bracket 19 is improved.

Abstract: A tool having a housing into which a motor assembly and a battery assembly are inserted. A circuit board can be employed to electrically connecting the battery assembly to the motor assembly even if the battery assembly and the motor assembly are not disposed in an in-line configuration. The circuit board can include a switch that can be employed to selectively operate the tool.

Abstract: A stator structure of a motor includes a magnetically conducting element, a circuit board, a bus line and a housing. The magnetically conducting element has at least one coil. The circuit board is positioned adjacent to the magnetically conducting element and electrically connected to the coil. The bus line is electrically connected to the circuit board or the coil. The housing has a top part and a bottom part, which are disposed at two opposite sides of the magnetically conducting element. The top part or the bottom part has a first fastening structure. One end of the circuit board or the bus line is fixed to the first fastening structure.

Abstract: An integrated motor and drive assembly includes a motor, a fan, and a drive unit. The motor is responsive to at least one drive signal. The fan is axially aligned with the motor and operable to generate a cooling flow. The drive unit is axially aligned with the fan and operable to generate the drive signal. The cooling flow traverses the motor and the drive unit.

Abstract: A motor generator that suppresses vibration that may be generated when power is transmitted through meshed gears includes: a stator; a case, a plurality of bolts that are used to attach the stator to the case; a rotor, rotatably mounted inside die stator; a first gear, coupled to and arranged concentrically with the rotor, for transferring power; and a second gear in meshing engagement with the first gear One of the plurality of bolts is positioned in the stator at a position to receive a reaction force, generated when power is transmitted through the meshed first and second gears and that acts radially outward from the central axis of the rotor on the stator, from one of the first gear and a the second gear. Thus, the transmission of undesirable vibration and noise to the passenger compartment is minimized.

Abstract: The invention relates to a drive unit (10), especially for adjusting mobile parts in a motor vehicle, and to a method for producing such a drive unit. The drive unit comprises a housing (12) which is provided with an opening (18), leading towards the surroundings (23), on which a gas-permeable, liquid-impermeable membrane (20) rests. The housing (12) has a first housing part (14) with a peripheral collar (26) and a second housing part (16) obturating the first housing part (14). The opening is injection-molded to the second housing part (16) with a peripheral contact surface (28) which forces the membrane (20) against the collar (26) of the first housing part (14) once the housing (12) is closed.

Abstract: A generator housing includes a top portion, a plurality of side portions, and a base portion. The top, sides, and base portions are connected to form an enclosure, such that a generator can be housed inside the enclosure. The top and side portions include an air and exhaust flow structure that facilitates cooling of a generator maintained inside the housing, that provides a sound attenuation function, and that releases exhaust created by a generator. At least one of the side portions and the top portion may be opened and closed to provide access inside the housing. The base portion includes a structure that facilitates installation and transport.

Abstract: In a motor, a retaining claw with a slanted surface is arranged around the upper end of a tubular portion of a housing for mounting a rotor. A cylindrical portion is integrally formed in a peripheral area of a rotational axis of a turntable. A retaining member with retaining portions having a J-shaped cross section is attached to the lower surface of the turntable. Arms of the retaining portions are located in the vicinity of the lower end of the cylindrical portion. In mounting the rotor onto the housing, the retaining portions contact the slanted surface and the arms are elastically deformed. Upon completion of the mounting, the arms return to a state before the elastic deformation, so that the retaining claw prevents the rotor from coming off.

Abstract: Certain exemplary embodiments can comprise a method, which can comprise obtaining an electric motor cooling fan. The electric motor cooling fan can be adapted to be operatively coupled to a motor enclosure of an electric motor. The motor enclosure can be configured in a ventilation pattern selected from a plurality of ventilation patterns.

Abstract: An electric motor includes a stator, a rotor positioned adjacent the stator and cooperating with the stator to generate a torque, and a bearing support assembly coupled to the rotor to at least partially support the rotor for rotation. An end frame includes a post positioned to engage and support the bearing support assembly. The end frame and the bearing support assembly cooperate to define a space therebetween. A mainframe is coupled to and cooperates with the end frame to substantially enclose the stator, and a set of electronics for controlling the motor is mounted in the space.

Abstract: A motor protector receiving bracket (10) is shown for use with a multiphase motor protector having at least two terminal pins (4 and 5). The bracket has a back wall formed with first (12e) and second (12h) slots for receiving respective pin terminals of the protector cradled in the bracket and are formed with features to prevent any movement of the protector relative to the bracket. The bracket is in turn adapted to be attached to a spring clip (14) welded to a motor casing for a low cost attachment system.