Abstract: A stepping motor includes a rotor assembly and a stator assembly including two stator units axially coupled to each other. The two stator units each include a pair of yokes which each include a base portion and a plurality of pole teeth extending from the base portion and which are disposed such that each of the pole teeth of one yoke and each of the pole teeth of the other yoke are arranged alternately in the circumferential direction. The pole teeth are shaped symmetric and each include a pair of slant sides inclined so as to become closer to each other with an increase of distance from the base portion, and the slant sides of adjacent pole teeth are located close to each other wherein a magnetic pole gap between the adjacent pole teeth pole teeth is about 0.2 times as large as the thickness of the pole teeth.

Abstract: In the drive train of a combustion engine an auxiliary arrangement is arranged which is to be coupled with an axial flow machine including a stator and a rotor, in order to perform an actuating movement. The stator has a coil arrangement, and the rotor has an essentially cup-shaped support for permanent magnet elements. The coil arrangement of the stator has at least one cylindrical winding and is at least partially enclosed by two essentially pot-shaped magnetic flux yokes. Each of the pot-shaped magnetic flux yokes has side areas with magnetic flux poles whose outsides are oriented towards the permanent magnet elements of the rotor. The magnetic flux poles of the stator are arranged spaced apart from the permanent magnet elements of the rotor. The magnetic orientation of neighboring permanent magnet elements towards the air gap alternates.

Abstract: A magnetic-pole portion can be formed by thread cutting, whereby a motor can be provided at lower cost as compared to a case where the magnetic-pole portion is formed by press-working.

Abstract: A motor including an outside rotor having a rotor disc with plural magnets alternating polarities flush mounted in the disc, an inside stator assembly with a transversely wound stator windings encased by a ring of wound magnetic flux channel pole pieces to assemble within a hub of a motor, and a controller coupled with feedback electronics for monitoring a timing, speed and direction and coupling a signal to a processing unit for adjusting the drive electronics driving the phase windings. A u-shaped channel above the bobbin filed transverse winding coil to receive the rotor disc and focus the captured magnetic flux in the pole pieces toward the magnets.

Abstract: Methods, systems and apparatus for an electric motor assist bicycle having a hub motor mounted to the front or rear hub to provide electric motor assist, and to function as a generator to charge batteries. The motor can be either a molded or wound magnetic flux channel transverse wound stator permanent magnet motor. The bicycle hub motor includes an electronic controller mounted to the frame of the bicycle and coupled with feedback electronics for monitoring a timing, speed and direction and coupling a signal to a processing unit for adjusting the drive electronics driving the phase windings. The pedal crank arm housing of the electric motor assist bicycle can include battery access ports with batteries stacked inside the bicycle seat tube and the down tube and a strain gauge to measure the rider pedaling effort and produce a signal in response.

Abstract: An interfitting groove is disposed in a bottom portion of a trough portion so as to have a groove direction that is axial and so as to extend axially outward from axially inside, and a rotation arresting portion housing recess portion is recessed into an axially inner opening edge portion of the interfitting groove on a first yoke portion. A magnet holding seat that holds a permanent magnet is disposed in the trough portion by an interfitting portion being fitted into the interfitting groove such that radial movement is restricted. A rotation arresting portion that is disposed so as to project axially outward from a flange portion of the bobbin is housed inside a space that is constituted by the rotation arresting portion housing recess portion and an external shape reduced portion that extends axially inward from the interfitting groove such that rotation of the bobbin around the shaft is restricted.

Abstract: Disclosed is a structure of a casing of a small stepping motor having an outer diameter of 8 mm or less, in which yoke teeth are integrally formed on the inner surface of the casing, and the thickness of the outer wall of the casing is different from the thickness of each of the yoke teeth. The casing of a small stepping motor includes yoke teeth integrally formed on an inner surface of the casing, in which a thickness of an outer wall of the casing is different from a thickness of the yoke tooth.

Abstract: An alternator for vehicle includes a stator that outputs an AC voltage and a rotor that includes a field coil and a rotor core. The stator includes a plurality of phase stators that are disposed side-by-side along the rotational axis and individually output AC voltages. The phase stators include an even number of stator tabs alternately extending from one outer side of a phase stator coil toward another outer side of the phase stator coil and extending from the other outer side toward the one outer side along the rotational axis. The rotor includes a field coil and a rotor core at which an even number of rotor tabs are formed along the circumferential direction so as to alternately extend from one outer side of the field coil toward another outer side of the field coil along the rotational axis and extend from the other outer side toward the one outer side along the rotational axis. A phase stator core at each phase stator is formed by laminating a plurality of magnetic sheets.

Abstract: Provided is an AC motor in a three-phase unbalanced state such as a claw-teeth type AC motor (108), which is reduced in magnetic flux pulsations and torque pulsations. Among the current command values of individual phases to be intrinsically given to an inverter (106) for feeding three-phase alternating currents of variable voltages/frequencies to the electric motor, a current command of an intermediate phase (a V-phase) having a smaller magnetic resistance of a stator core than those of other phases is subjected to a reducing correction by a correction unit (102) on the basis of the correction amount calculated by a current correction amount calculating unit (103), and the unbalanced three-phase alternating currents are fed to the AC motor (108), so that magnetic flux pulsations of a secondary electric angle and torque pulsations of the same order are reduced.

Abstract: A power-generating wheel hub includes a hub shaft including a mounting section, and a bobbin including a tubular body sleeved around the mounting section, two flange plates connected respectively to two opposite ends of the tubular body, and a coil wound around the tubular body. Two magnetic yoke disks are sleeved on the mounting section adjacent respectively to outer faces of the flange plates, and each includes a plurality of angularly spaced-apart radial protrusions, and a plurality of indentations each formed between two adjacent ones of the radial protrusions. The indentations in the two magnetic yoke disks are staggered axially with respect to each other. Magnetic yoke claws respectively include radial arms inserted respectively into the indentations in the magnetic yoke disks and abutting against the outer faces of the flange plates, and axial arms extending axially from the respective radial arms and arranged annularly around the coil.

Abstract: A wound stator includes a plurality of windings, each winding including a primary lead and a secondary lead defined by free ends of the winding. Each of the windings being associated with a first, second or third phase. For each phase, a plurality of the primary leads are wrapped around a termination side of the stator to a common primary base lead to form a primary lead connection for the phase. For each phase, a plurality of the secondary leads are wrapped around the termination side of the stator to a common secondary base lead to form a secondary lead connection for the phase.

Abstract: A rotor is adapted to be used in a reluctance motor configured to generate a magnetic field around the rotor to form magnetic circuits passing through the rotor to produce a driving force corresponding to a torque generated by changes in magnetic reluctance in the magnetic circuits. The rotor includes a first salient pole group and a second salient pole group. The first salient pole group includes a plurality of first salient poles configured and arranged to be energized simultaneously with the first salient poles being spaced apart from each other in a circumferential direction of the rotor. The second salient pole group includes a plurality of second salient poles configured and arranged to be energized simultaneously with the second salient poles being spaced apart from each other in the circumferential direction of the rotor. The first salient pole group is magnetically insulated from the second salient pole group.

Abstract: An inductor-type synchronous machine having an axial gap structure, which has a shaft portion at the center thereof, the machine includes: a field-side stator which has a yoke made of a magnetic material and a field body protruding from the yoke in an axial direction of the shaft portion to form an N pole and an S pole in a radial direction; a rotor which has N pole inductors disposed so as to be opposed to the N pole formed by the field body and S pole inductors disposed so as to be opposed to the S pole formed by the field body; and an armature-side stator in which an armature coil is disposed so as to be opposed to the N pole inductors and the S pole inductors.

Abstract: A stepping motor may include a rotor having a drive magnet and a stator having a drive coil wound in a tube shape and disposed on the drive magnet. The stator may include a first yoke, a second yoke, a plurality of first pole teeth provided in the first yoke, and a plurality of second pole teeth provided in the second yoke. The plurality of the first pole teeth and the second pole teeth may be alternately disposed in a circumferential direction of the rotor.

Abstract: A motor stator is disclosed. Each of a first phase, second phase and third phase of three-phase winding has multiple toroidal coils and crossover wires connecting the coils. The crossover wire of the first phase runs inside the second phase coil and the third phase coil. The crossover wire of the second phase runs over the first phase coil with a guide by guide posts and runs inside the third phase coil. The crossover wire of the third phase runs over the first phase coil and the second phase coil with a guide by the guide posts.

Abstract: The invention relates to an electric motor comprising a permanent magnet rotor, which is supported rotationally about a central axis, a wound stator having a cylinder ring-shaped stator winding, claw poles, which are disposed perpendicularly to ring disc-shaped stator plates and around the central axis, and a cylinder jacket-shaped yoke ring, the length of the claw poles in the axially parallel direction being clearly greater than half the inner diameter of the stator. It is the object of the invention to provide an electric motor, in which the stator is composed of the least number of components, requires simple assembly and has a robust structure and optimum efficiency, thereby enabling greater design flexibility, usability of installation space and thus an economic construction.

Abstract: A pump is driven by a compact electric motor in which a coil is disposed in a ring form around and along a stator core which has a plurality of claw magnetic poles that extend alternately from both ends of one member of the stator core toward the end of the other member thereof. A stator core can be made from a compressed powder core by molding with resin, with the molded portion able to serve as a partition separating pump and motor units.

Abstract: A motor may include a stator provided with a yoke having a plurality of pole teeth and an exciting coil and a rotor disposed in a circular space surrounded by the pole teeth. A portion where a difference between an inner side area of the pole tooth facing the rotor and an outer side area of the pole tooth facing the exciting coil is larger than a difference between the inner side area and the outer side area of the pole tooth where both circumferential direction faces of the pole tooth are formed in faces coincided with normal lines may be provided on a root part of the pole tooth. Further, circumferential direction faces of at least a root part of the pole tooth are formed so as to face the rotor in an inclined manner.

Abstract: A stepping motor may include a rotor having a drive magnet and a stator having a drive coil wound in a tube shape and disposed on the drive magnet. The stator may include a first yoke, a second yoke, a plurality of first pole teeth, and a plurality of second pole teeth. The plurality of the first and second pole teeth may be alternately disposed in a circumferential direction of the rotor.

Abstract: Provided is a starter that can ensure stable insulation and exhibits excellent leakage resistance. The starter includes: a starting motor realized with a dc motor that has a commutator, positive brushes which are disposed around the commutator to abut on the commutator and connected to an external power supply, negative brushes, which are opposed to the positive brushes, stored in a bracket bearing one end of a rotation shaft; and a starting switch that is mounted on the starting motor and electrically connects or disconnects the external power supply to or from the positive brushes. When an engine is started, the starting motor is driven with the external power supply via the starting switch, and the starting motor is mechanically coupled to the engine. Herein, the starting motor has an insulating member disposed only on the internal surface of the bracket neighboring the positive brushes.

Abstract: A stepping motor includes a rotor assembly and a stator assembly including two stator units axially coupled to each other. The two stator units each include a pair of yokes which each include a base portion and a plurality of pole teeth extending from the base portion and which are disposed such that each of the pole teeth of one yoke and each of the pole teeth of the other yoke are arranged alternately in the circumferential direction. The pole teeth are shaped symmetric and each include a pair of slant sides inclined so as to become closer to each other with an increase of distance from the base portion, and the slant sides of adjacent pole teeth are located close to each other wherein a magnetic pole gap between the adjacent pole teeth pole teeth is about 0.2 times as large as the thickness of the pole teeth.

Abstract: A motor may include a rotor provided with a rotor shaft, a cylindrical bearing made of resin material and provided with a bearing part for rotatably supporting a shaft end of the rotor shaft, and a bearing holder provided with a through-hole into which the cylindrical bearing is inserted. The cylindrical bearing is slidably held in the through-hole and at least one of a first end face where the bearing part is formed and a second end face which is an opposite end face to the first end face is formed with a ring-shaped groove. Therefore, a wall thickness of resin for forming the bearing can be made thinner and thus shrinkage of the side wall part of the bearing which faces an inner peripheral face of the through-hole of the bearing holder is reduced.

Abstract: A coil member such as a coil bobbin may include a cylindrical drum part around which a coil is to be wound in a circular shape. The cylindrical drum part is formed by two molding dies and a flat face part is formed on an outer peripheral face of the cylindrical drum part so that a space part is formed between an innermost circumferential face of the coil to be wound and the flat face part. The flat face part is formed so that the two molding dies are separated without pressing the outer peripheral face of the cylindrical drum part, and a joining part on the drum part which is formed by the two molding dies is located on the flat face part. The coil member may be only a coil bobbin, a coil bobbin with a terminal part, or a coil bobbin which is integrated with a stator core.

Abstract: A device for generating electrical or mechanical output, comprising a stator coil, a stator assembly, a rotor coil, a rotor assembly rotational about an axis, the rotor assembly at least partially surrounding the rotor coil, rotator extensions capable of induced magnetization and extending from the rotator, each rotator extension having a rotor extension surface, wherein magnetic flux leakage between the rotator extension surfaces is prevented or reduced via permanent magnet elements located at the rotator extension surfaces. Stator and rotor may be reversed in operation.

Abstract: Various devices for generating electrical or mechanical output, comprising a coil, a rotor assembly rotatable about an axis, the rotor comprising alternating magnet portion and flux conducting portions, each of the magnet portions having a first end with a first polarity and a second end with the opposite polarity and oriented along the periphery such that the first end of each magnet portion points toward the first end of the previous magnet portion and the second end of each magnet portion points toward the second end of the next magnet portion, a stator assembly having first and second sets of stator flux conductor extensions, each of the stator flux conductor extensions having a stator surface facing the rotor, wherein rotating the rotor assembly about the axis alternates the rotor assembly between a first and a second position, causing magnetic flux to flow. The stator and the rotor may be reversed in operation.

Abstract: A motor including an outside rotor having a rotor disc with plural magnets alternating polarities flush mounted in the disc, an inside stator assembly with a ring of pole pieces forming a channel to house a transversely wound stator windings, and a controller coupled with feedback electronics for monitoring a timing, speed and direction and coupling a signal to a processing unit for adjusting the drive electronics driving the phase windings. A u-shaped gap above the channel to receive the rotor disc and focus the captured magnetic flux in the pole pieces toward the magnets. In an embodiment the molded magnetic flux channel pole pieces of the inside stator are sets of molded magnetic flux channel pole pieces, each set forming a channel and corresponding to one phase of the motor; and a section of each one of the transverse windings passing through one channel, the remaining section folding back outside the set in close proximity to the outer base of the set of molded magnetic flux channel pole pieces.

Abstract: In a busbar unit, which is a distributing device arranged to supply electrical currents to coils, a busbar holder is arranged to support coil connection busbars and sensor connection busbars. Conductor wire connection portions of the coil connection busbars are exposed on both axial sides and welded to a conductor wire defining the coils. The sensor connection busbars are combined with a plurality of electronic components to define a Hall IC circuit designed to output and receive electrical signals to or from Hall ICs. Sensor connection portions of the sensor connection busbars are exposed on both axial sides, and welded to terminals of the Hall ICs. Electronic component connection portions of the sensor connection busbars are exposed on both axial sides, and welded to the electronic components.

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 claw pole generator is basically provided with a circularly arranged permanent magnet and an internal stationary unit with a yoke and a coil. The yoke includes a first laminated yoke and a second laminated yoke. The first and second laminated yokes include a disc-shaped connecting portion arranged on one side of the coil and a plurality of outer circumferential yoke portions that are arranged between the coil and the permanent magnet with circumferential spaces in-between. Each of the outer circumferential yoke portions has a plurality of outer circumferential yoke layers laminated overlying each other along a radial direction with respect to the axial centerline of the coil. An outermost one of the outer circumferential yoke layers that is closest to the permanent magnet with a longer axial length than an innermost one of the outer circumferential yoke layers.

Abstract: A linear actuator motor design including a rotor assembly that has an insert molded into a non-magnetic sleeve through a plurality of openings, which is kept from rotating within the non-magnetic sleeve by at least one opening arranged along the length of the non-magnetic sleeve which corresponds to at least one tab formed by the molded material of the insert and a stator assembly having a plurality of symmetrical and interchangeable magnetic pole plates. Each of the plurality of magnetic pole plates comprises a substantially planar plate portion with a central opening therein and a plurality of prongs extending from the central opening and substantially perpendicular to the plate portion. The prongs of the plurality of magnetic pole plates create an opening that is dimensioned to receive the rotor assembly therein. A non-conductive material is the molded over the plurality of magnetic pole plates.

Abstract: A motor includes a housing formed of a first shell and a second shell, a stator, which is formed of a first yoke, a second yoke, a connecting device and two coils. The first yoke and the second yoke each comprise a terminal holder mounting portion, a race and a plurality of pole pawls respectively extended from the race. The race of the first yoke has the race of the first yoke kept apart from the race of the second yoke at a distance to reduce magnetic interference, the connecting device having a terminal holder fastened to terminal holder mounting portions of the first yoke and second yoke of the stator and a plurality of metal terminals installed in the terminal holder, the coils respectively set between the first yoke and the first shell and between the second yoke and the second shell and respectively electrically connected to the metal terminals, and a rotor formed of a transmission shaft and magnets and inserted through the first yoke and the second yoke and rotatable relative to the stator.

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 stator (16) is proposed for a polyphase electric machine, having a core body (17), which is provided with slots (114), which are situated in the radial direction with respect to an axis of rotation of the electric machine on one side of the core body (17) parallel to the longitudinal axis of the core body (17), having a slot width (bn1, bn2) and a stator yoke (122) being provided on the opposite side, with two slots (114) each being separated from one another by a tooth (116) having a tooth width (bz1, bz2) and extending from a slot base (120) to a tooth head (118), these slots (114) being provided to receive at least one coil winding having a plurality of coils that is electrically connected in series and are manufactured from at least one continuous wire (124) without interruption, the ratio (bz2/hj) of the tooth width (bz2) to the yoke height (hj) at the tooth head (118) being between 0.3 and 0.

Abstract: Provided is a motor which is thinned by improving the structure of a section for feeding a driving coil with power. In a motor, a stator is provided with substrate holding sections for holding a power feeding substrate in substantially vertical posture to a motor shaft line direction. On the power feeding substrate, land sections, to which coil terminals of driving coils are connected, are formed. Thus, a terminal block is not required, and a structure for firmly fixing a terminal pin to the terminal block for processing the coil terminal is not required.

Abstract: An inductor motor includes a stator block, a substantially cylindrical excitation coil, and a rotor including two substantially columnar magnet rotors coaxially arranged, and the magnet rotors are individually inserted inside two stator blocks coaxially arranged. The stator is formed of a substantially flat plate-shaped preformed member of a magnetic material having a plurality of protruding pieces circumferentially formed and protruding radially outwardly, and has stator teeth formed by bending the protruding pieces to stand up. The rotor has an intermediate circumferential groove with a smaller diameter than a magnet portion between the two magnet rotors coaxially arranged. A holding plate portion of the stator placed on an axially intermediate side in each stator block is placed around the intermediate circumferential groove of the rotor.

Abstract: A claw pole type motor includes a rotor having a magnet arranged on an outer circumferential surface thereof and a stator including an annular iron core and an annular coil received within the iron core. The iron core includes a yoke portion opened in an inner circumferential surface opposite to the rotor, a plurality of upper claw-shaped magnetic poles and a plurality of lower claw-shaped magnetic poles which are arranged along an inner circumferential surface of the annular coil. The upper/lower claw-shaped magnetic poles are curved to extend axially downwardly/upwardly from an upper/lower inner edge of the yoke portion, respectively. The upper and the low claw-shaped magnetic poles are alternately arranged along a circumferential direction of the iron core. The yoke portion has cutout portions formed in non-magnetic path regions which do not include magnetic paths through which magnetic flux flows between neighboring claw-shaped magnetic poles across the annular coil.

Abstract: In an electrical axial flow machine, comprising a stator and a rotor, wherein either the stator comprises a coil arrangement and the rotor is provided with permanent magnet elements, or wherein the rotor comprises a coil arrangement and the stator is provided with permanent magnet elements, the stator is arranged spaced from the rotor under the formation of an air gap, each of the magnetic flux yokes has several neighbouring magnetic flux poles, the coil arrangement has at least one hollow cylindrical winding which is at least partially encompassed by magnetic flux yokes, the magnetic flux poles each have an outside which is oriented to the permanent magnet elements beyond the air gap, neighbouring permanent magnet elements in the circumferential direction have an alternating magnetic orientation towards the air gap, at least several of the magnetic flux poles are in certain positions of the rotor relative to the stator at least partially oriented in alignment with the permanent magnet elements, the magnetic

Abstract: A motor includes: a rotor having permanent magnets in which N-poles and S-poles are alternately arranged in the circumferential direction; seven stator pole groups, each of which has a plurality of stator poles arranged in the circumferential direction, the stator pole groups being arranged with the circumferential and axial positions of the stator poles in one stator pole group being offset from those of other stator pole groups; and a plurality of loop windings formed in the circumferential direction and arranged at positions adjacent to the plurality of stator pole groups in the rotor shaft direction.

Abstract: The present invention can achieve a highly efficient permanent-magnet synchronous motor that can obtain output in a high-speed area without prolonging the axis of the permanent-magnet synchronous motor. The present invention provides a highly efficient permanent-magnet synchronous motor that can obtain output in a high-speed area without prolonging the axis of the permanent-magnet synchronous motor, in which stator magnetic poles are formed by dividing a magnetic pole in each phase into a plurality of parts and placing them in a circumferential direction with respect to a rotational axis, at least one divided stator magnetic pole being made movable in the circumferential direction with respect to the rotational axis, and the phase of the movable stator is controlled.

Abstract: A device for generating electrical or mechanical output, comprising a rotor coil, a rotor assembly with an axis, and having rotator extensions, a stator coil, and a stator assembly, the stator assembly having two sets of stator flux conductor extensions, the rotator end of the stator flux conductor extension having a stator conductor surface and the interior ends of the first set of stator flux conductor extensions abutting the interior ends of the second stator flux conductor extensions at an abutting junction, wherein rotating the rotor assembly about the axis alternates the rotor assembly between a first and second position in which each of the rotor extension surfaces alternately face the stator conductor surfaces of the first and second set of stator flux conductor extensions. The first and second positions of the rotor assembly lead to the conduction of magnetic flux in the device in opposite paths in the stator assembly generating an output in an output coil.

Abstract: A claw pole type motor includes first and second claw poles opposed to each other and each including a radial yoke portion having an inner diameter side and an outer diameter side, a plurality of pole portions arranged on the inner diameter side, and axially extended, and an outer peripheral side yoke portion extending on the outer diameter side. A stator core is provided having an inner diameter side, and is formed so as to cause the pole portions of the first claw pole to be meshed with the pole portions of the second claw pole. A rotor is arranged on the inner diameter side of the stator core with a circumferential gap being defined therebetween. In order to provide high efficiency while simplifying manufacturing, the first and second claw poles are formed by compacting of magnetic powder.

Abstract: A motor stator includes a claw-pole assembly (20), a fixing structure (10) and a sleeve bearing (60). The claw-pole assembly includes a pair of yokes (20a, 20b) each having a plurality of pole teeth (24) intermeshed with those of the other yoke. A gap (29) is defined between two neighboring teeth. The fixing structure is made of plastic material integral with the yokes by insert molding, including a connecting portion (70) contained in the gaps, a base (30) formed at an end of the claw-pole assembly, and a tube (50) extending from the base into the claw-pole assembly. The sleeve bearing is fixedly embedded in the tube during the process of insert molding the fixing structure to the yokes.

Abstract: A pump is driven by a compact electric motor in which a coil is disposed in a ring form around and along a stator core which has a plurality of claw magnetic poles that extend alternately from both ends of one member of the stator core toward the end of the other member thereof. A stator core can be made from a compressed powder core by molding with resin, with the molded portion able to serve as a partition separating pump and motor units.

Abstract: A multiphase claw-pole type electric rotary machine has two or more phases-stator units. The stator units are arranged phase by phase in an axial direction of the electric rotary machine. Each phase stator unit comprises a pair of complementary-opposed claw pole core blocks and a ring-shaped stator coil sandwiched therebetween. The stator units have structures rotatably adjustable independent of each other in their phase positional relations while maintaining concentricity of them after assembly of the rotary machine before being secured.

Abstract: In the drive train of a combustion engine an auxiliary arrangement is arranged which is to be coupled with an axial flow machine comprising a stator and a rotor, in order to perform an actuating movement. The stator has a coil arrangement, and the rotor has an essentially cup-shaped support for permanent magnet elements. The coil arrangement of the stator has at least one cylindrical winding and is at least partially enclosed by two essentially pot-shaped magnetic flux yokes. Each of the pot-shaped magnetic flux yokes has side areas with magnetic flux poles whose outsides are oriented towards the permanent magnet elements of the rotor. The magnetic flux poles of the stator are arranged spaced apart from the permanent magnet elements of the rotor. The magnetic orientation of neighbouring permanent magnet elements towards the air gap alternates.

Abstract: A drive apparatus which is small in size, short in axial length, low in cost, and high in output. A stepping motor as the driving apparatus includes a first coil, a second coil, a magnet, and a rotor comprised of a core and a rotary shaft. First through fourth outer magnetic pole portions are opposed to the outer peripheral surface of the magnet with a predetermined gap between them. The first and the second coils are disposed adjacent to the magnet in an axial direction of the rotary shaft and disposed at respective ends of the rotary shaft. The first and second outer magnetic pole portions are inserted inside the first and second coils, respectively. As viewed in the circumferential direction of the magnet, the third and fourth outer magnetic pole portions are disposed close to the first and second outer magnetic pole portions, respectively.

Abstract: A wind turbine generator produces alternating current. The generator contains an inner cylindrical stator and an outer cylindrical rotating housing. The stator has a transverse row of molded magnetic flux members mounted on its exterior wall and a metal conductor running through a continuous transverse channel defined by the flux members. The rotating housing has a transverse row of permanent magnets mounted on the interior wall of the outer cylinder. Rotation of the housing causes the permanent magnets to induce magnetic fields in the flux members that induce an alternating current in the metal conductor.

Abstract: Disclosed herein is a structure of a casing of a small stepping motor having an outer diameter of 8 mm or less, in which a plurality of yoke teeth is integrally formed on the inner surface of the casing, and the thickness of the outer wall of the casing is different from the thickness of each of the yoke teeth, thus reducing a production cost and improving a process. The casing of a small stepping motor includes: a plurality of yoke teeth integrally formed on an inner surface of the casing, wherein a thickness (t1) of an outer wall of the casing is different from a thickness (t2) of the yoke tooth.

Abstract: Stator claw poles are disposed at a stator core at a position facing opposite a rotor so as to alternately range from the two sides along the axial direction. With a plurality of magnetic poles thus formed, the distance by which the gap between the front end portions of the stator claw poles and the stator outer circumference ranges is increased, which, in turn, reduces the reactance guided to a stator coil. It is ensured that the magnetic reluctance manifesting between the front end portions of the stator claw poles and an enclosing member that holds the stator core, facing opposite the centers of the claw poles along the circumferential direction, is greater than the magnetic reluctance manifesting between the front portions and the stator core enclosing member facing opposite the front end portions.

Abstract: A motor having a structure configured to reduce magnetic resistance between a rotor and a stator, a method for manufacturing the motor, and a washing machine using the motor are disclosed. The motor includes a rotor, and a stator co-operating with the rotor. The stator includes a main core and an auxiliary core. The main core includes a base and a plurality of teeth protruding from the base. The auxiliary core is structured to prevent the occurrence of magnetic resistance from being generated from spaces, defined between adjacent teeth, when the stator co-operates with the rotor.