Abstract: A brushless rotary electric machine includes a stator having an annular armature core with first radial teeth at the outer periphery thereof and second radial teeth at the inner periphery thereof and an armature winding wound between the teeth, a rotor having a pair of first and second rotary cores disposed tandem in the axial direction thereof, and a field coil. Each of the first and second rotary cores has a pair of coaxial outer and inner cylindrical pole members respectively facing the first and second radial teeth, a center core and a disk member magnetically connecting the pair of coaxial cylindrical pole members and the center core. The stator is accommodated by a first space defined by the outer and inner cylindrical members of the pair of first and second rotary cores. The field coil is accommodated by a second space defined by the inner cylindrical pole member and the center core of the first and second rotary cores.

Abstract: An alternator for use in an automobile includes a stator supported between a front housing and a rear housing, and a rotor connected to a rotor shaft and rotatably supported inside the stator. A cooling fan is positioned at an end of a pole core of the rotor. The cooling fan is coupled to the rotor shaft by engaging edges of a center opening of the cooling fan with a non-circular flange formed on the rotor shaft. The cooling fan is correctly positioned relative to the rotor shaft, without using a jig, both in the radial direction and in the rotational direction of cooling fan. Noises and vibrations due to rotational imbalance of the cooling fan are suppressed.

Abstract: A vehicular alternator is provided which can effectively utilize the magnetic flux of a permanent magnet disposed between claw-type magnetic poles and can improve an output of the alternator. The vehicular alternator comprises a rotor and a stator constituted by coiling stator windings over a stator core, the rotor comprising a pair of claw-type magnetic poles arranged in an opposed relation, a permanent magnet disposed between adjacent two of a plurality of claws provided on the pair of claw-type magnetic poles, and field windings coiled radially inward of the plurality of claws. Each of the plurality of claws of the rotor is formed to have a shape coming into contact with the whole of a magnetic pole surface of the permanent magnet.

Abstract: The invention provides a rotor for a dynamo-electric machine which is capable of reducing deformation of magnetic poles due to centrifugal force or noise generated by vibrations without deteriorating characteristics of the dynamo-electric machine. The rotor includes a plurality of deformation preventing members. Each of the deformation preventing members is attache on each magnetic. Each of the deformation preventing members has elongated portion pressed to aginst to the side wall of the magnetic poles. A first deformation preventing members attached on the first magnetic poles and a second deformation preventing members attached on the second magnetic poles also are used. The first and second deformation preventing menber are holded to one another.

Abstract: The present invention provides a rotor for a rotary electric machine that suppresses the occurrence of winding disturbances in the process of winding a coil wire and has a coil field having a uniform outside diameter that is less likely to collapse. A coil field of a rotor coil is constructed by winding a coil wire having a circular cross section onto an outer circumference of a drum portion of a bobbin in multiple layers so as to make columns in each of the layers equal in number in an axial direction.

Abstract: A rotor for an alternator is provided which has the benefits of a thin bobbin, as well as the benefits of a single contact steel core, thereby increasing the dissipation of heat and maximizing the space for winding the field coil to increase the overall power provided by the rotor and alternator. The rotor includes a bobbin assembly having a hollow cylinder with a first end and a second end, a first end cap attached to the first end of the cylinder and a second end cap attached to the second end of the cylinder. The bobbin assembly further includes a metallic sleeve fitted inside the hollow cylinder and providing support to the hollow cylinder.

Abstract: A brushless rotary electric machine includes a stator having an annular armature core with first radial teeth at the outer periphery thereof and second radial teeth at the inner periphery thereof and an armature winding wound between the teeth, a rotor having a pair of first and second rotary cores disposed tandem in the axial direction thereof, and a field coil. Each of the first and second rotary cores has a pair of coaxial outer and inner cylindrical pole members respectively facing the first and second radial teeth, a center core and disk member magnetically connecting the pair of coaxial cylindrical pole members and the center core. The stator is accommodated by a first space defined by the outer and inner cylindrical members of the pair of first and second rotary cores. The field coil is accommodated by a second space defined by the inner cylindrical pole member and the center core of the first and second rotary cores.

Abstract: Each tooth of a stator core has circumferential projections at an inner tooth edge and circumferential notches at a base portion adjacent to a core back. A width of the teeth at the base portion is larger than a width of the same at the tooth edge. Therefore, the magnetic reluctance of the teeth does not increase. In addition, a plurality of the magnetic strips can be formed from a long and thin magnetic sheet. This increases the yield percentage of the magnetic strip and reduces a manpower of manufacturing the magnetic strip. Further, the notches make it easy to wind the magnetic strip into a cylindrical core.

Abstract: Deformation and vibration of claw magnetic poles in rotor are reduced. A rotor includes: a rotor coil 15 for generating a magnetic flux by applying a current; a pole core comprised of a first pole core body 19 and a second pole core body 20 that are disposed so as to cover the rotor coil 15, each being provided with claw-shaped claw magnetic poles 21, 22 engaging with each other; and a magnet assembly 25 composed of a magnet 23 for reducing leakage of magnetic flux and a magnet-holding member 24 for supporting the magnet 23 on the claw magnetic poles 21, 22. Center of gravity 25G of the magnet assembly 25 is located on the base part side nearer than the center of the claw magnetic poles 21, 22.

Abstract: A claw-pole dynamo comprises a permanent magnet, a coil, and a yoke surrounding the coil. The yoke comprises a plurality of first yoke arms disposed on a first axial side of the coil and a plurality of second yoke arms disposed on a second axial side of the coil. Each yoke arm has a radially outer portion and a radially inner portion, and each yoke arm comprises a plurality of plate-shaped pieces. The radially outer portions of the yoke arms extend axially toward corresponding opposite sides of the coil. Each yoke arm radially inner portion faces a corresponding yoke arm radially inner portion disposed on the opposite side of the coil in the axial direction, and the plurality of first yoke arm radially outer portions are interleaved with the plurality of second yoke arm radially outer portions in a circumferential direction.

Abstract: According to the invention, in a rotor of a vehicular alternating current generator motor having a Lundell type core having a field winding, a cylindrical portion wound with the field winding, a yoke portion widened from a portion in an axial direction of the cylindrical portion in an outer peripheral direction, and a plurality of claw-like magnetic pole portions constituted to incorporate the field winding, extended in the axial direction from an outer periphery of the yoke portion and folded to bend to be brought in mesh with each other alternately, and a magnet arranged between the claw-like magnetic poles, an outer peripheral face of the field winding and an inner peripheral face of the magnet are made to be proximate to each other to thereby hamper draft between the field winding and the magnet.

Abstract: An electric machine for a motor vehicle is provided, the electric machine generally comprising a claw-pole rotor and a stator circumscribing the rotor. Adjacent pole fingers of the rotor define a distance P representing the axial distance between the magnetic centers of the adjacent pole fingers. The stator generally includes a stator core defining a distance H representing the axial height of the lamination stack. Preferably, the electric machine has a ratio of P to H (P/H) in the range of 0.29 to 0.45, resulting in an improvement in the power output of the electric machine.

Abstract: An annular stepped portion is formed at a first end of an inner circumferential surface of a thick ring-shaped second yoke portion, a second axial end portion of a cylindrical portion of a plate is fitted inside so as to overlap with the stepped portion in a radial direction, and the cylindrical portion of the plate is integrated with the second yoke portion by welding in the radially-overlapping region.

Abstract: A magnetic circuit component having a plurality of claws arranged in a plurality of rows, with the base of each claw connected to a common yoke. A plurality of non-interlaced coils constituting a multi-phase winding are included, with the coils being wound around the bases of corresponding claws, and being distributed uniformly in the direction of motion.

Abstract: Leakage of a magnetic flux from inside diameter face of claw magnetic poles is reduced to improve output, and deformation and vibration of the claw magnetic poles are reduced. A rotor includes: a rotor coil for generating magnetic flux; a pole core comprised of a first pole core body and a second pole core body that are arranged so as to cover the rotor coil, each being provided with protruding claw magnetic poles 21, 22 engaging with each other; a magnet 31 for reducing leakage of magnetic flux leaking from inside diameter side of the claw magnetic poles 21, 22; and a magnet-holding member 32 for supporting the magnet 31 on the claw magnetic poles 21, 22.

Abstract: Pole core members of a rotor are fitted on a rotary shaft with claw-shaped magnetic poles engaged with one another from front and rear sides. Each of magnet mounting members for holding magnets against side surfaces of each magnetic pole has magnet retaining portions on both sides and a platelike middle portion. Located between two adjacent claw-shaped magnetic poles, each magnet produces a magnetic field oriented in a direction opposite to the direction of a magnetic flux formed between the adjacent claw-shaped magnetic poles. The claw-shaped magnetic pole has a stopper portion protruding inward from an extreme end of the magnetic pole on an inclined inside surface thereof. The magnet mounting member carrying the magnets in the magnet retaining portions is affixed to each claw-shaped magnetic pole with the middle portion of the magnet mounting member fitted in a recess formed in the inclined inside surface of the magnetic pole.

Abstract: A rotor of a dynamo-electric machine according to the present invention including a pole core provided so as to cover a rotor coil generating a magnetic flux and being made up of a first pole core body and a second pole core body having respectively tooth-shaped magnetic poles projecting so as to mesh alternately with each other, includes magnet ASSYs as the magnetic element having magnets disposed on the both side surfaces of the tooth-shaped magnetic poles for reducing magnetic flux leakage from between the side surfaces of the adjacent tooth-shaped magnetic poles, and magnet retaining members for supporting the magnets on the tooth-shaped magnetic poles, and resin members filled between the magnet ASSYs at the position between the opposing surfaces thereof.

Abstract: The rotor of a vehicle alternator can firmly fasten the permanent magnets between claw-shaped magnetic poles. The rotor includes a Lundell type iron core having claw-shaped magnetic poles which are alternately arranged and opposed each other and include a centered cylindrical field winding, and a permanent magnet disposed between the claw-shaped magnetic poles for increasing the magnetic field. The permanent magnet is held by radial elastic force.

Abstract: An alternator of the present invention includes a housing, a stator assembly mounted stationary within the housing, and a rotor assembly mounted rotatably within the housing in functional engagement with the stator assembly. An air gap extends annularly around the alternator between the rotor assembly and the stator assembly. The rotor assembly has a first end and a second end, and the air gap has a non-uniform thickness that varies along the axial length of the rotor assembly between the first and second ends of the rotor assembly. This non-uniform thickness is designed to avoid interference between rotor outer surface and stator inner surface at high rotor spin speed, but minimize the averaged air gap thickness for high alternator performance.

Abstract: A brushless electric machine comprising a housing fabricated from a magnetically permeable material and having an interior region, a stator mounted within the interior region and attached to the housing wherein the stator has a stator winding, a rotor mounted for rotation about a rotational axis within the stator. The rotor comprises a plurality of magnetic pole pieces and permanent magnets circumferentially arranged in an alternating configuration such that each permanent magnet is positioned intermediate a pair of consecutive magnetic pole pieces and the axis of magnetization lies in the plane of rotation of the rotor. The rotor is separated from the stator windings by a first air gap so as to form a first magnetic circuit. The rotor further comprises a first side, a first rotor end cap attached to the first side, a second side, and a second rotor end cap attached to the second side. Each rotor end cap contacts at least some of the magnetic pole pieces.

Abstract: An alternator for a vehicle comprises two pole pieces having interlaced poles (10) and magnets, the poles exhibiting grooves profiled along an axis (21) and accommodating the magnets, the profile completely preventing the magnets escaping from the grooves in a plane perpendicular to the axis (21). It has, for each magnet (20), a strip (24) interposed between one face (25, 27) of the magnet and at least one of the grooves (18), the strip (24) being produced from a material which is less hard than the magnet.

Abstract: A bobbin for a rotor is of a three-piece construction which allows for greater heat transfer, increased percentage fill, and hence increased power density of the alternator. Preferably, the three-piece assembly includes an injection molded plastic core, and opposing end caps constructed of a laminate material having good tearresistance.

Abstract: A stator for an automotive alternator is provided with good installation characteristics for stator coils and which can lower noise. The stator includes a stator core in which a plurality of slots are formed at an inner circumference thereof and stator coils which are fitted into the slots. A rotor is provided inside the stator and includes a rotor coil, and a pole core for housing the rotor coil. Two slots are provided for each set of stator coils, each phase and each magnetic pole and the total number of slots is seventy-two or more. The stator core formed by laminating a plurality of sheet-shaped magnetic members. The stator coils are disposed in the slots, and the stator core is rounded such that the stator coils become the inner side thereof and both end surfaces thereof are contacted to connect the stator core in an annular shape.

Abstract: An object of the present invention is to provide an automotive alternator achieving high output by overlapping a laminated core of a stator and yoke portions of a field rotor in an axial direction, and enabling high-speed and low-speed electromagnetic noise to be reduced by prescribing dimensional relationships in the stator and the field rotor. In this automotive alternator, a ratio (R2/R1) between an outer radius R2 of a cylindrical portion of a Lundell-type core and an outer radius R1 of the Lundell-type core is set to a range from 0.50 to 0.54, and a ratio (Lc/Lp) between an axial length Lc of the laminated core and an axial length Lp of the Lundell-type core is set to a range from 0.55 to 0.70.

Abstract: A stator for an automotive alternator is provided with good installation characteristics for stator coils and which can lower noise; the stator 8 including, a stator core 122 in which a plurality of slots 125 are formed at an inner circumference thereof and stator coils 23 which are fitted into the slots, and a rotor 6 provided inside the stator 8 so as to be capable of rotating, including, a rotor coil 15 for flowing a current to generate magnetic flux, and a pole core 16 for housing the rotor coil and forming a plurality of claw-shaped magnetic poles in accordance with magnetic flux, and, 2 slots 125 are provided for each set of stator coils, each phase and each magnetic pole and the total number of slots 125 is seventy-two (72) or more, the stator core 122 is such that a plurality of sheet-shaped magnetic members with a plurality of teeth 124 patterning the slots 125 at one side of a yoke 123 are laminated, the stator coils 23 are disposed in the slots 125, and the stator core 122 is rounded such that the

Abstract: A cylindrical magnetic pole portion of a rotor core is constituted by first and second cylindrical magnetic pole sub-portions prepared as solid bodies. First and second magnetic poles are formed on the first and second cylindrical magnetic pole portions so as to be arranged in a circumferential direction so as to be separated from each other on an inner peripheral side by first and second recessed grooves recessed into an inner peripheral surface, and linked to each other on an outer peripheral side by first and second thin layer portions constituted by floor portions of the first and second recessed grooves.

Abstract: The present invention provides improved alternators for use alone or in combination with, for example, rotary internal combustion engines wherein the alternators are characterised by absence of moveable bearings or mountability to existing driving shafts by use of an aligning plate and through passage through the rotor of the alternator to mount to the driving shaft. The alternators may be further characterised by plural rotors on the rotor driving shaft. The rotary internal combustion engines of the present invention are characterised by fixed size combustion chambers formed of radial recesses around a rotor amongst other features.

Abstract: Electrical machine, in particular an alternator for a motor vehicle, with a housing (4) and a rotor (10) that is supported, in the housing (4), in a manner that allows it to rotate around a rotation axis (12), the rotor having at least one rotor winding (14), a plurality of claw poles (17) disposed circumferentially, whereby adjacent claw poles (17) have axial claw overlap LÜ and permanent magnets (28) have axial magnet length LM, whereby at least one permanent magnet (28) is located between every two adjacent claw poles (17) and is magnetized so as to suppress leakage flux between the claw poles (17), wherein the following applies for the ratio of axial magnet length LM to axial claw overlap LÜ: LM/LÜ?0.81.

Abstract: A rotating electric machine for a vehicle includes magnet holders for holding permanent magnets. The magnet holder is fitted between adjacent two claw-like magnetic poles of pole cores, and plural permanent magnets are provided to be magnetized for reducing magnetic-flux leakage between the magnetic poles. The magnet holder includes a radial outer surface, and a protrusion that protrudes from the radial outer surface to a radial outside around a center in a circumferential direction. Therefore, a thickness of the radial outside surface of the magnet holder increases, and its rigidity can be increased. Accordingly, it can prevent the radial outside surface of the magnet holder from being deformed due to centrifugal force, and it can prevent the magnet holder from being damaged.

Abstract: An electric-machine rotor is composed of a field coil, a pair of pole cores having a plurality of claw poles to enclose the field coil, a plurality of auxiliary permanent magnets disposed between the claw poles, a shaft fixed to the pair of pole cores, and a pair of slip rings connected to the field coil. The rotor is provided with a pattern on a surface of the pole cores for indicating the polarity of the claw poles when the field coil is energized.

Abstract: An alternator for a motor vehicle is disclosed. The alternator includes a stator having a stator winding, a rotor assembly positioned concentrically relative to the stator, and including at least one pole having an outer surface. The outer surface has a groove and includes a field coil disposed adjacent the at least one pole, the field coil having start and end leads. A slip ring is fixedly coupled to the start and end leads and a rotor shaft on which the field coil, the at least one pole and the slip ring are fixed. Moreover, the start and end leads are positioned within the groove and are retained in the groove by a locking feature formed in the outer surface of the at least one pole.

Abstract: A rotating electrical machine for a vehicle includes a stator having a multi-phase armature winding, a rotor having a pair of field cores which rotate together with a rotating shaft, and a field winding for magnetizing the pair of field cores, the pair of field cores respectively includes magnetic poles extending in an axial direction of the rotating shaft and being arranged to alternately engage with each other through a predetermined clearance Dc, each of the magnetic poles having a width in a rotation direction thereof is formed in a stair shape to be smaller toward a tip of the width, and the clearance Dc between adjacent the magnetic poles is set within a range from 50° to 70° in electrical angle. As a result, the rotating electrical machine for a vehicle can be obtained in which exciting force of harmonic components is reduced, electromagnetic noise, torque ripple and the like are effectively suppressed, and the productivity is excellent.

Abstract: An automatic electric power generating device for wheels includes a wheel hub and a housing. The wheel hub is provided with a first magnetic pole set and a second magnetic element. The first magnetic pole set has a spool, and left and right magnetic poles. The spool is winded with a coil having a guiding end thereof connected to an illuminating element installed at the wheel hub. The housing is provided with a first magnetic element and a second magnetic pole set. The second magnetic pole set has a spool, and left and right magnetic poles. The spool is winded with a coil having a guiding end thereof connected to a lighting device. Through rotations of the wheel, induction is generated between the driven and rotating magnetic pole sets and the magnetic elements.

Abstract: An alternator for motor vehicles has a stator and a claw-pole rotor that co-operates with the latter. The claw-poles of the rotor have claw-pole fingers which are uniformly distributed around the periphery, axially intermesh in alternate directions at a distance from one another and have a pole core and an excitation winding. Permanent magnets are arranged between the claw-pole fingers and are held in a retaining ring with a zigzag configuration. To mount the retaining ring in as simple a manner as possible between the claw-pole fingers, a longitudinal slit is provided on each longitudinal side of the claw-pole finger. The retaining ring engaged in said slit by one respective longitudinal side or its axial section.

Abstract: An alternator of the present invention includes a housing, a stator assembly mounted stationary within the housing, and a rotor assembly mounted rotatably within the housing in functional engagement with the stator assembly. An air gap extends annularly around the alternator between the rotor assembly and the stator assembly. The rotor assembly has a first end and a second end, and the air gap has a non-uniform thickness that varies along the axial length of the rotor assembly between the first and second ends of the rotor assembly. This non-uniform thickness is designed to avoid interference between rotor outer surface and stator inner surface at high rotor spin speed, but minimize the averaged air gap thickness for high alternator performance.

Abstract: An ac generator comprising a rotor coil for generating a magnetic flux, a pole core disposed to cover the rotor coil and having pawl-shaped magnetic poles projecting in staggered and alternating relationship, permanent magnets disposed on both side surfaces of the pawl-shaped magnetic poles for reducing the leakage of the magnetic flux, and a fan for cooling. The permanent magnets are samarium-iron alloy magnets containing Ti and B, or plastic magnets made of magnet powder bonded together by a resin, bonded magnets of Sm8.2—Fe75.6—Ti2.3—B0.9—N13. One portion of the side opposing to the pawl-shaped magnetic pole side surfaces of the permanent magnet may be resin-coated. A restricting means for restricting the displacement of the magnetic pole in the radial direction may be disposed in the vicinity of the tips of the magnetic poles.

Abstract: A method is performed for attaching a fan to a rotor assembly for a dynamounted electric machine. A shaft is mounted within a housing of the dynamo-electric machine. The shaft includes an integral shoulder portion for creating an abutment surface. A fan which includes a fan base and a plurality of fan blades protruding from the fan base is mounted on the shaft. The fan base has a central bore wherein an inner circumference of the fan base along the central bore is juxtaposed to the abutment surface. A pair of pole cores is mounted axially along the shaft toward the shoulder portion so as to clamp the fan between a respective end of the pole cores and the abutment surface.

Abstract: A rotor assembly for an alternator having a rotor shaft, a field coil wound on an insulative bobbin, and pair of poles mounted on the shaft around the field coil and bobbin. Each of the poles includes a pole core and a plurality of pole fingers. The plurality of pole fingers each have an inner surface facing the field coil. The plurality of pole fingers and their inner surface is structured to increase the electric output power if the alternator while decreasing the weight and volume of the alternator, thereby increasing the alternator maximum speed and reducing the deflection of the pole fingers.

Abstract: Pole core members of a rotor are fitted on a rotary shaft with claw-shaped magnetic poles engaged with one another from front and rear sides. Each of magnet mounting members for holding magnets against side surfaces of each magnetic pole has magnet retaining portions on both sides and a platelike middle portion. Located between two adjacent claw-shaped magnetic poles, each magnet produces a magnetic field oriented in a direction opposite to the direction of a magnetic flux formed between the adjacent claw-shaped magnetic poles. The claw-shaped magnetic pole has a stopper portion at its extreme end on an inclined inside surface. The magnet mounting member carrying the magnets in the magnet retaining portions is mounted on each claw-shaped magnetic pole with the middle portion of the magnet mounting member situated against the inclined inside surface of the magnetic pole, and a backup ring is fitted inside the magnet mounting members.

Abstract: A rotary electric machine is composed of an armature core, an armature winding, a rotor core disposed opposite said armature core, a rotary magnetic-flux source for supplying first magnetic flux to the rotor core, a frame for supporting the armature core and the rotor core and a stationary magnetic flux source, fixed to the frame, for supplying second magnetic flux to the rotor core in a direction to supplement the first magnetic flux.

Abstract: An improved generator fan serves to draw air into the generator through an inlet in the generator housing, pass the air through the rotor and stator, and direct the air out openings in the generator housing. The fan of the present invention includes a disc and at least one multi-directional blade extending from the disc. The multi-direction blade includes a leading segment extending from the disc between a first radius measured from the axis of rotation and a second radius, the leading segment including a leading edge extending from the disc at an angle of about ninety degrees from the disc, the leading segment extending from the disc with an increasing angle along the length of the leading segment; and a trailing segment extending from the disc between the second radius and a third radius measured from the axis of rotation, the third radius being greater than the second radius and the trailing segment extending from the disc with an angle having a rate of change different than the leading segment.

Abstract: A rotary electric machine is composed of an armature core, an armature winding, a rotor core disposed opposite said armature core, a rotary magnetic-flux source for supplying first magnetic flux to the rotor core, a frame for supporting the armature core and the rotor core and a stationary magnetic flux source, fixed to the frame, for supplying second magnetic flux to the rotor core in a direction to supplement the first magnetic flux.

Abstract: A method is performed for attaching a fan to a rotor assembly for a dynamo-electric machine. A shaft is mounted within a housing of the dynamo-electric machine. The shaft includes an integral shoulder portion for creating an abutment surface. A fan which includes a fan base and a plurality of fan blades protruding from the fan base is mounted on the shaft. The fan base has a central bore wherein an inner circumference of the fan base along the central bore is juxtaposed to the abutment surface. A pair of pole cores is mounted axially along the shaft toward the shoulder portion so as to clamp the fan between a respective end of the pole cores and the abutment surface.

Abstract: (Subject

Abstract: A rotor of a dynamo-electric machine according to the present invention including a pole core provided so as to cover a rotor coil generating a magnetic flux and being made up of a first pole core body and a second pole core body having respectively tooth-shaped magnetic poles projecting so as to mesh alternately with each other, includes magnet ASSYs as the magnetic element having magnets disposed on the both side surfaces of the tooth-shaped magnetic poles for reducing magnetic flux leakage from between the side surfaces of the adjacent tooth-shaped magnetic poles, and magnet retaining members for supporting the magnets on the tooth-shaped magnetic poles, and resin members filled between the magnet ASSYs at the position between the opposing surfaces thereof.

Abstract: A rotor assembly is provided in which the rotor assembly includes a first core portion, wherein the first core portion has at least one first core protrusion, and a second core portion, wherein the second core portion has at least one second core protrusion. The first core portion and the second core portion are configured to be matingly coupled to each other so as to form an assembled rotor assembly. In addition, the rotor assembly includes a number of magnetizable members wherein respective ones of the magnetizable members are coupled to each of the first core protrusions and coupled to each of the second core protrusions. The magnetizable members are adapted to be coupled to a magnetizing fixture prior to mating the first and second core portions so as to magnetize the magnetizable members.

Abstract: An improved generator has an improved rotor assembly that includes a rotor shaft defining an axis of rotation, a first pole member and a second pole member mounted on the rotor shaft and a deflector supported about the axis of rotation and having non-magnetic axial extensions. Pole claws of the first pole member and second pole member comprise north and south poles that are intermeshed and spaced apart from one another. The deflector is supported about either of the first end or second end of the shaft and corresponds to the member mounted on the same end of the shaft. The deflector is adapted to rotate with the corresponding member and includes a plurality of non-magnetic axial extensions having a base extending between adjacent pole claws of the corresponding member. The non-magnetic axial extensions provide a substantially uniform circumference creating more desirable airflow as the improved rotor assembly rotates about its axis.

Abstract: An improved generator fan serves to draw air into the generator through an inlet in the generator housing, pass the air through the rotor and stator, and direct the air out openings in the generator housing. The fan of the present invention includes a disc and at least one multi-directional blade extending from the disc. The multi-direction blade includes a leading segment extending from the disc between a first radius measured from the axis of rotation and a second radius, the leading segment including a leading edge extending from the disc at an angle of about ninety degrees from the disc, the leading segment extending from the disc with an increasing angle along the length of the leading segment; and a trailing segment extending from the disc between the second radius and a third radius measured from the axis of rotation, the third radius being greater than the second radius and the trailing segment extending from the disc with an angle having a rate of change different than the leading segment.

Abstract: A rotating electrical machine for a vehicle includes a stator having a multi-phase armature winding, a rotor having a pair of field cores which rotate together with a rotating shaft, and a field winding for magnetizing the pair of field cores, the pair of field cores respectively includes magnetic poles extending in an axial direction of the rotating shaft and being arranged to alternately engage with each other through a predetermined clearance Dc, each of the magnetic poles having a width in a rotation direction thereof is formed in a stair shape to be smaller toward a tip of the width, and the clearance Dc between adjacent the magnetic poles is set within a range from 50° to 70° in electrical angle. As a result, the rotating electrical machine for a vehicle can be obtained in which exciting force of harmonic components is reduced, electromagnetic noise, torque ripple and the like are effectively suppressed, and the productivity is excellent.

Abstract: Pole core members of a rotor are fitted on a rotary shaft with claw-shaped magnetic poles engaged with one another from front and rear sides. Each of magnet mounting members for holding magnets against side surfaces of each magnetic pole has magnet retaining portions on both sides and a platelike middle portion. Located between two adjacent claw-shaped magnetic poles, each magnet produces a magnetic field oriented in a direction opposite to the direction of a magnetic flux formed between the adjacent claw-shaped magnetic poles. The claw-shaped magnetic pole has a stopper portion at its extreme end on an inclined inside surface. The magnet mounting member carrying the magnets in the magnet retaining portions is mounted on each claw-shaped magnetic pole with the middle portion of the magnet mounting member situated against the inclined inside surface of the magnetic pole, and a backup ring is fitted inside the magnet mounting members.