Abstract: Methods of fabricating a magnetic flux channel for a transverse wound electric motor by forming a ring of plural adjacent molded magnetic flux channel pole pieces and a second ring of opposite pole pieces. The two rings are mated such that each pole piece mates with an opposite pole piece to form magnetic flux channels and a c-shaped recess forms a winding channel for a transverse phase winding. After mating, the rings are bonded together to form a stator assembly of the transversely wound electric motor. The two rings may be approximately identical, or the two rings may be different as long as they mate to form the plural molded magnetic flux channels and the transverse phase winding channel. The molds may be designed to form the outer surface of a stator assembly. Molds of adjacent phases may be combined back-to-back to reduce part count and increase mechanical strength.

Abstract: A rotary electric machine includes a stator including a plurality of teeth, a coil wound around each tooth, and a stator yoke core that connects the respective teeth, the teeth and the stator yoke core integrally fixed by a molding resin. The rotary electric machine also includes a rotor with a plurality of magnets that face the teeth, the magnets and teeth separated from each other by a space therebetween. Each of the teeth comprises a head portion facing opposite the magnets, a coil wind-up portion around which the coil is wound up, and an insert portion that can be inserted into the stator yoke core, the insert portion including a groove formed in a portion of the insert portion that protrudes from the stator yoke core, where the groove is fillable with the molding resin to inhibit the teeth from disengaging from the stator yoke core.

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: A canned linear motor armature and a canned linear motor. The canned linear motor armature including a winding accommodating frame formed in the shape of a recess which accommodates an armature winding; a flat plate-shaped connection substrate which connects the armature winding; cans which close airtightly both opening portions of the housing; refrigerant passages formed respectively between the can and the winding accommodating frame and between the can and the connection substrate; and a lead wire which connects the connection substrate and a terminal base, is so constructed that coating with an adhesive resin is provided around a land that is a connection part for connecting the armature winding and the lead wire on the connection substrate so as to include the connection part, and the surroundings of the adhesive resin are filled with a filled resin.

Abstract: The laminated core structure of a motor includes a stator iron core formed by laminating a plurality of stator iron core thin sheets in which a plurality of magnetic poles are provided at fixed intervals along the circumferential direction on the inner peripheral side so as to project toward the center direction, and a rotor iron core arranged on the axis line of the stator iron core concentrically with the stator iron core and formed by laminating a plurality of disc-shaped rotor iron core thin sheets, the stator iron core and the rotor iron core each being fastened by caulking the plurality of thin sheets to each other. The core loss produced by caulking is decreased by particular placement of the center of a caulking uneven part of the stator iron core thin sheet and the center of a caulking uneven part of the rotor iron core thin sheet.

Abstract: A device for connecting an electric motor intended for use in a fuel tank, in particular of a motor vehicle, with connection contacts carbon brushes sliding over an armature of a rotor, and electrical leads arranged between the connection contacts and the carbon brushes. The electrical leads have a sheath made of polytetrafluoroethylene.

Abstract: This motor has a stator formed by integrally molding a stator core, a stator winding wound around the stator core, and a grounding terminal mounted on the stator winding by insulating resin. The motor has a rotor provided with a shaft, a bracket mounting a bearing for supporting the shaft, and a conductive pin press fit in at least one hole having a predetermined diameter provided in the teeth of the stator core. The pin and the grounding terminal are electrically connected to each other.

Abstract: Direct coupling type motor for drum type washing machine having a stator which can reduce material required for fabrication, and a weight after fabrication, simplify a fabrication process, and can be mounted on a fixing side, such as a tub or a bearing housing securely, and a rotor which can enhance rigidity an outer rotor and protect a surface of the outer rotor.

Abstract: A stator includes an annular substrate, an outer-diameter portion of the substrate provided at a tip end of an outer-diameter leg of a bobbin, the substrate having a smaller inner diameter than an inner diameter of the stator core. When stator resin provides sealing, the outer-diameter portion of the substrate can be supported by the tip end of the outer-diameter leg of the bobbin, and an inner-diameter portion of the substrate can be supported by a mold. Accordingly, even when the moment of inertia of a molded motor is increased, the substrate can be prevented from being deformed by a molding pressure with the stator resin, without the area of the substrate being decreased.

Abstract: An electrical machine has a stator, a rotor, which features a rotor shaft, and at least one bearing for the rotor. The bearing is supported on a bearing block, which in its turn rests on an end face of the stator or on an insulating end disk positioned on an end face of the stator and/or is supported inside the stator.

Abstract: An electromagnetic component is formed from a pre-form comprising layers of soft magnetic metal ribbon. Adhesive is applied to permeate the pre-form and is then cured. The bonded pre-form is placed within a milling assembly that supports and constrains the ribbon layers during a milling operation used to process the pre-form into an electromagnetic component shape. Optionally, the shape is thermally processed. The resulting electromechanical component has attractive soft magnetic properties, including low core loss, that render it useful as a component in electric motors and generators and static inductive devices operable at high excitation frequencies.

Abstract: A method for building a device having fluidic and electrical functions includes the steps of: mounting a building part with fluidic and electrical functions on a substrate that is provided with a fluidic circuit; fluidically connecting the building part with the substrate; electrically connecting the building part with the substrate; and mechanically connecting the building part with the substrate. Flip-chip technology is utilized and a seal is made by of a gasket. With such a method, a hybrid microfluidic system can be built in which materials and processes for realizing the various connections (fluidic and mechanical and electrical) can be selected in principle independently of each other so the individual processes can be optimized independently of each other in a large measure. With the application of flip-chip technology, great accuracy in the positioning of the building parts can be achieved.

Abstract: A method of making an armature includes placing a commutator and a lamination stack on an armature stack. Coil windings wound in slots in the lamination stack, the commutator and armature shaft are at least partially encapsulated in a first plastic. The commutator has a commutator ring divided into a plurality of segments with slots between the segments that are filled with a second plastic when the commutator is made by molding a core of the second plastic in the commutator ring before the commutator ring is mounted on the armature shaft. The mold used to mold the first plastic includes projections that extend between the tangs of the commutator and against notches at axial ends of the slots of the commutator. The notches filled with the second plastic and the projections of the mold prevent plastic flash from getting into the slots of the commutator ring.

Abstract: Disclosed herein is a reliable inner rotor type miniature brushless motor structure wherein, while a field coil is fixedly disposed onto the inner wall of a housing, an end flange is fixedly disposed into one end of the housing from where tap wires of the field coil are drawn out, so that the tap wires exposed from the end-flange side end of the housing can be connected to wiring substrates fixedly disposed onto the outer periphery of the end flange without the need to bend the wiring substrates, and further so that power feed lands can be large enough to reduce the likelihood of wiring breakage and other problems.

Abstract: A motor/dynamo including a mounting shaft having a hollow channel and a bearing attached to each end, a non-rotating cylindrical hub having a hollow core for the mounting shaft, single or plural rows of plural parallel pole molded magnetic flux channels each having two halves and forming a hollow channel through which wire is transversely wound through fixedly attached on a surface of the cylindrical hub forming a high efficiency, high torque, direct drive motor/dynamo, utilizing Parallel Pole Molded Magnetic Flux Channels, low resistance and impedance transverse coil windings, and physically separate stators for electrical phases. The high torque, high efficiency motor capable of driving wheels, tracks, propellers, and other loads without a gearbox or other torque multiplying device. The high efficiency dynamo capable of being directly driven by wind turbines without a speed increasing gearbox or other speed multiplying device.

Abstract: A magnet rotor in which rotation prevention and positional displacement (rattling, and misalignment of axes) between a magnet and a rotor body can be restricted, a movable magnet type-instrument with the magnet rotor, and a stepping motor with the magnet rotor. In the magnet rotor, projections (11) and recesses (12) arranged with predetermined intervals and formed in a substantially rectangular shape are provided on the inner wall of a hollow section of an annular magnet (10). Rising side wall sections (11A) defined by the projections (11) are radially directed with the position of the axis (G) of the magnet rotor (R) as the standard. In the rotor body (20), rotation prevention sections (21) for preventing relative rotation between the rotor body (20) and the annular magnet (10) are formed by placing a plastic material along the shapes of the projections (11) and the recesses (12).

Abstract: An insulating motor housing includes first to fourth power supply elements stacked in their thickness direction to be spaced and insulated from each other and integrated with a housing body by insert molding. A power source connector using power source terminals of the second to fourth power supply elements as connector terminals is also integrated with the housing body.

Abstract: A housing assembly for an electric motor includes a sealed plastic enclosure having a body portion having a nose and an open end opposite from the nose. The open end provides access to an interior region of the plastic enclosure. The housing assembly also includes a metal sleeve located within the interior region of the plastic enclosure, and a magnet structure located within an interior region of the metal sleeve.

Abstract: A permanent magnet rotor having a shaft, a hollow cylindrical permanent magnet and an elastic connecting medium between the shaft and the permanent magnet. The permanent magnet is arranged co-axially around the shaft to ensure that the permanent magnet is mounted securely, that it is not damaged during large temperature fluctuations, and that it is not deflected impermissibly from the axis of rotation in case of heavy radial load. A simple installation process uses a mechanical connection between the shaft and the permanent magnet. This task is performed by virtue of the fact that an elastic connecting medium is arranged along the periphery of the shaft at several first areas in which the distance between the shaft and the permanent magnet is enlarged. These first areas are separated from the second areas in which the distance between the shaft and the permanent magnet is minimized but not zero.

Abstract: In an axial air-gap electronic motor having a stator that is formed by annularly connecting a plurality of core members around an axis of a rotor output axis, an insulator that insulates a winding portion of a stator core of each core member is formed in the winding portion in the shape of a bobbin having a pair of flanges, a winding draw-out portion is formed between abutted end portions of the flange, and a crossover wire of a winding is pulled out from the winding draw-out portion to outside the core member, whereby it is possible to positively perform routing treatment from the winding portion of the winding to the crossover wire and it is ensured that the crossover wire can be positively fixed without bringing a crossover wire of a different phase into contact.

Abstract: Electromagnetic components are provided with a heat exchange mechanism. For example, a fluid-cooled electromagnetic field-functioning device, such as a motor, generator, transformer, solenoid or relay, comprises one or more electrical conductors. A monolithic body of phase change material substantially encapsulates the conductors or an inductor. At least one liquid-tight coolant channel is also substantially encapsulated within the body of phase change material. The coolant channel may be part of a heat pipe or cold plate. The coolant channel may be made by molding a conduit into the body, using a “lost wax” molding process, or injecting gas into the molten phase change material while it is in the mold. The coolant channel may also be formed at the juncture between the body and a cover over the body.

Abstract: A yoke assembly is constructed by retaining integrally a yoke ring having positioning holes aligned with pole claws arranged equally on the inner circumference and a yoke ring having positioning holes aligned with the space between pole claws arranged equally on the inner circumference by a retaining cylinder made of a resin. The retaining cylinder has a pin hole remaining after pulling out a common positioning pin inserted into the positioning holes during molding.

Abstract: A stator of an electric motor includes coil cores, bobbins and coils. The coil cores include six coil cores, which are arranged at equal angular intervals in a circumferential direction. The bobbins respectively cover outer peripheral surfaces of the coil cores, and the coils are respectively wound around outer peripheral surfaces of the bobbins. Among the six coils, each diametrically opposed two coils are electrically connected to each other through the corresponding connection line. Positioning members displace positions of the connection lines from one another, so that interference between the connection lines and interference between the connection line and the coils are limited.

Abstract: A permanent magnet rotary motor is provided in which cogging torque can be reduced and an increase in copper loss can also be prevented. A first divided core unit 13 is combined with a second divided core unit 15, thereby constituting a stator core 9. The first divided core unit 13 constitutes a yoke portion 17. The second divided core unit 15 includes pole pieces 25, magnetic pole surface constituent portions 27, and first and second type connecting portions 29A and 29B each mutually couple two adjacent magnetic pole surface constituent portions 27, all of which are formed integral with one another. The thickness of the first type connecting portions 29A in a radial direction of the stator core 9 is set to be smaller than the thickness of the second type connecting portions 29B in the radial direction of the stator core 9.

Abstract: A motor assembly (20) includes a motor (22) and an end cap (26). The end cap (26) includes an electrically insulating body (28) having a peripheral edge (30) that interfaces with a conductive housing (24) of the motor (22). Motor terminals (94, 102) and an electromagnetic suppression (EMD) chip device (54) are located within the body (28). The chip device (54) has an input terminal (74) in electrical communication with the motor terminal (94), an input terminal (76) in electrical communication with the motor terminal (102), and an earth terminal (78). A conductive ground strap (56) is in electrical communication with the earth terminal (78). The ground strap (56) encapsulates and retains the chip device (54) in the end cap (26) and has an end (60) fitted onto the peripheral edge (30) of the end cap (26) between the end cap (26) and the conductive housing (24) of the motor (22).

Abstract: A motor that includes a motor frame, an end-bell assembly, a stator assembly, and filling material is described. The stator assembly is placed within the frame such that at least one open area is defined between an inner diameter of the stator assembly and an inner diameter of the motor frame. The at least one end-bell assembly is attached to the motor frame, forming an inside area adjacent the motor frame and the stator assembly. The motor also includes a material configured to fill the at least one open area and the inside area of the at least one end-bell assembly for the purpose of sealing the stator assembly and the inside area associated with the at least one end-bell assembly. The material assists in a bonding and attachment between any two or more of the stator assembly, the motor frame, and the at least one end-bell assembly.

Abstract: The jacketed active magnetic bearing is applied to a rotary machine having a rotor in contact with a process gas and placed in a leaktight enclosure. The magnetic stator is protected by a first jacket of magnetic anti-corrosion material that constitutes a portion of the leaktight enclosure and that is secured to the bearing stator, and the detector stator is protected by a second jacket of non-magnetic anti-corrosion material that constitutes a portion of the leaktight enclosure and that is secured to the detector stator. The bearing armature and the detector armature can be made of a laminated magnetic identical to that of the first jacket.

Abstract: There is provided a motor having a rotor in which a rotor magnet is fixed on the outer peripheral surface of a rotor body. The motor is configured so that the support shaft portion is formed of a material having a self-lubricating property, and a first sliding surface (33c) of the support shaft portion is supported rotatably. Also, the motor is configured so as to have a metallic motor casing (10), a rotor (30) provided in the motor casing (10) to drive a motor shaft (31) projecting from the motor casing (10) through a shaft hole (14) in an end wall portion (11b), a stator (20) provided around the rotor (30) in the motor casing (10) to rotationally drive the rotor (30), a cover member (40) provided to close the other end opening (12) of the motor casing (10), and a connector body (50) integrally formed of a resin so as to seal the other end opening (12) of the motor casing (10) from the outside of the cover member (40).

Abstract: The present invention provides a rotor of a brushless (BL) motor, including: a high-strength engineering plastic member formed by injection-molding high-strength engineering plastic around a concavo-convex portion 12a formed on the outer circumferential surface of a rotary shaft; a sound-absorbing resin element formed by injection-molding a sound-absorbing resin around the high-strength engineering plastic member; a cylindrical ring magnet assembly including a plurality of axially aligned ring-shaped magnets, each of which has a plurality of indented grooves 20a and 20b formed on both end edges of the inner circumferential surface thereof; and a high-strength plastic member formed by injection-molding a high-strength plastic between the sound-absorbing resin element and the ring magnet assembly, the high-strength plastic member having a plurality of protrusions formed on the outer circumferential surface thereof in such a fashion that each protrusion corresponds to an associated one of the indented grooves of

Abstract: A device for positioning and affixing magnets on a magnetic yoke member of an electric motor includes: a nonmagnetic support for receiving the magnets; a magnetic element for holding the magnets in position on the nonmagnetic support arranged on the other side of the nonmagnetic support with respect to the magnets, the attraction exerted by this element on the magnets greater than that exerted by the magnetic yoke member during positioning of the device with respect to the yoke; a device for varying the magnetic forces present, whereby the magnetic attraction of the magnetic yoke member and/or the magnetic element on the magnets may be varied such that the magnetic force of attraction exerted by the yoke on the magnets becomes greater than that exerted by the magnetic element on them, thus provoking transfer of the magnets to the yoke.

Abstract: A stator for an electric machine includes a plurality of core segments interconnected with one another. At least one core segment includes a plurality of teeth and a back portion that at least partially interconnects the teeth. A first one-piece mold defines a first end insulator portion and a plurality of slot insulator portions, and a second one-piece mold defines a second end insulator portion and a second plurality of slot insulator portions. The plurality of core segments is positioned between the first mold and the second mold such that the molds align and insulate the core portions. The stator also includes a plurality of coils. Each coil surrounds at least a portion of one tooth.

Abstract: A high-precision cylindrical coil having a high-precision fine coil pattern and a high mechanical precision such as fine roundness and no axial runout, and a cylindrical micrometer using the cylindrical coil are provided. In a cylindrical coil, a plurality of layers of coil patterns formed by filling the coil pattern grooves formed on a cylindrical substrate with a conductor and a plurality of insulating layers coating the cylindrical substrate are formed, the layers of coil patterns are electrically interconnected to each other by filling a through-hole formed by performing a hole forming process with a conductor, and the outmost layer is made of an insulating material.

Abstract: A composite rotor for an axial airgap, permanent magnet dynamoelectric machine comprises a plurality of magnet subassemblies adhesively bonded together to form the rotor. Each magnet subassembly comprises a rotor permanent magnet and an optional spacer. A fibrous belt is wrapped around the periphery of each subassembly to provide high tensile strength at least along the radial sides of the subassembly. The belt is preferably infiltrated with an adhesive agent, such as an epoxy resin, that is used to bond the subassemblies. The rotor is thereby provided with high strength and low mass, making it suitable for use in a high-speed, high pole count electric machine.

Abstract: A motor includes a drive circuit for driving a rotor by controlling a current applied to an armature winding of a stator, and a capacitor for smoothing a voltage supplied to the armature winding and/or a capacitor for smoothing a supply voltage from outside on a same board. The board and the stator are integrally molded in using resin. Prior to the molding, capacitors are sealed inside a cylindrical metal case with a closed top face by rubber, and a pair of lead terminals protrude outside through this sealing rubber. The capacitors are mounted upright on the board and fixed by applying adhesive at two diagonally opposite areas on a bottom end of the metal case.

Abstract: A bus bar secured to a stator in an electric motor in a preferred embodiment according to the invention includes four wiring boards, which are arranged perpendicularly to a center axis at intervals in a direction toward the center axis, and a resin portion for covering the surroundings of the four wiring boards by injection molding. Resin passing holes, through which a resin flows when the resin portion is molded, are formed at each of the wiring boards. When the bus bar is molded, the resin is injected into a resin molding die in a state in which the four wiring boards are supported by supporting pins disposed inside of the die. The resin flows to and fro between a space defined between the die and the wiring board and a space defined between the adjacent wiring boards.

Abstract: A motor includes a rotor that is rotatable about a center axis, a stator facing the rotor, a bearing housing arranged to support the stator and having a plurality of fixing portions, and a base having a through hole. The base is fixed to the bearing housing via the fixing portions. The base also includes a recess and at least some of the fixing portions are engaged in the recess. At least one of the fixing portions is arranged to engage a surface at a radially inner portion of the base.

Abstract: A method for forming an armature for an electric motor includes securing a lamination stack having slots therein on an armature shaft. A commutator is secured on one end of the armature shaft. Magnet wires are wound in the slots in the lamination stack and ends of the magnet wires are secured to the commutator. Plastic is molded around the lamination stack, commutator and magnet wires. Excess plastic is machined off. The magnet wires can have a layer of heat activated adhesive that is activated when the plastic is molded. Slots in the lamination stack can include slot liners formed of thermally conductive plastic. A fan can be formed when the thermally conductive plastic is molded to encapsulate the magnet wires.

Abstract: A partially enclosed induction motor comprises a rotor assembly, a stator assembly, and a metal frame defining a housing having a generally cylindrical shape with bearing housings at each axial end. The interior of the frame is configured to closely embrace a laminated core and follows the contour of the coil end turns of the stator assembly. A canister seal between the stator assembly and the rotor assembly hermetically seals the rotor assembly from the stator assembly. A heat conductive molding material fills gaps in the stator winding and the space between the stator assembly and the frame. A fan driven by the rotor shaft and a shroud direct the air along the canister seal and through the rotor assembly.

Abstract: A switched reluctance motor includes: a stator including a cylindrical body, a plurality of salient poles coupled to an inner circumferential surface of the cylindrical body and provided with a winding coil, and an exterior member formed as a cylindrical shape by encompassing an assembly formed by coupling of the cylindrical body, the salient poles and the like; a rotor rotatably inserted inside the exterior member of the stator; a rotary shaft coupled to the rotor; and a phase indication magnet coupled to the rotor or the rotary shaft. Accordingly, an external structure of the motor is simplified, and the number of components and the number of assembling processes are remarkably reduced.

Abstract: An electric motor cartridge comprises a first cartridge housing portion (2) and a second cartridge housing portion (3). The cartridge housing portions (2, 3) are coupled together so as to assembly the electric motor cartridge (1) by radially and axially positioning a stator (4) there between.

Abstract: A regulator assembly mounting threaded aperture is formed on an inner wall surface of a rear bracket, and a receiving recess portion is recessed into an inner wall surface of the rear bracket around the regulator assembly mounting threaded aperture. A regulator assembly mounting penetrating aperture is disposed through a base of a regulator assembly, and an engaging protruding portion is disposed so as to project from the base around the regulator assembly mounting penetrating aperture. The regulator assembly is fixed to the rear bracket by engaging the engaging protruding portion in the receiving recess portion and fastening a regulator assembly mounting screw that has been passed through the regulator assembly mounting penetrating aperture into the regulator assembly mounting threaded aperture.

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: The invention relates to a magnet module for fixing to a shaft (4), said module comprising a magnet holder (8) consisting of an injection moulded plastic material, and a magnet element (9). The magnet holder (8) and magnet element (9) are embodied as separate components, the magnet element (9) being injected into the plastic material of the magnet holder (8) and the magnet holder (8) being connected to the shaft (4).

Abstract: A manufacturing process for a motor stator assembly includes the following steps. A plurality of stator segments is manufactured. The stator segment includes an inner ring portion, a connection rib and an outer ring portion. The connection rib is connected between the inner ring portion and the outer ring portion. The stator segments are disposed at intervals in a mold. By using a plastic injection molding method, an insulating unit is formed on the surface of the stator segments. The adjacent inner ring portions are connected together via the insulating unit to form a full circle. There is a gap between two adjacent outer ring portions. Thereby, it is handy and convenient to perform the wire-winding process for the motor stator assembly.

Abstract: A heat dissipation fan includes a fan frame, a stator mounted to the frame, and a rotor rotatably disposed around the stator. The fan frame includes a bracket, a central tube for positioning the stator, and a supporting member. The supporting member is made of a material having a higher bending strength than a plastic material used to form the bracket and the central tube. The supporting member includes a main body connected to the central tube, a plurality of ribs extending radially outwardly from the main body, and a plurality of engaging units formed at free ends of the ribs, respectively. The engaging units are embedded in the bracket for integrally connecting the central tube to the bracket.

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: 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: 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 brush holder incorporates a terminal integral part, which has a coupling portion. The coupling portion couples the terminals with each other. The brush holder has a resin body and a plurality of terminals. The resin body has an opening. The terminals are embedded in the resin body. The terminals are coupled to each other by the coupling portion as an integral part before being embedded in the resin body. The coupling portion is exposed from the opening of the resin body. The terminals are separated from each other by cutting the coupling portion, which is exposed from the opening of the resin body. A coating member coats the opening of the resin body to insulate each terminal.

Abstract: An electric machine has a rotor and a stator as well as a method for cooling such a machine. In order to improve cooling of an electric machine, the electric machine (18) has a rotor (2) that is excited by permanent magnets, a stator (38), magnets (3) which are arranged along the circumferential line of the rotor (2) in such a way that a magnetically non-effective zone (10) is created around the center of the rotor (2), at least one opening (11) in the magnetically non-effective zone (10) of the rotor (2) in order to embody an air flow path (41) through the rotor (2), the opening (11) extending substantially in an axial direction, and a fan (15, 56, 58, 59) which moves along with the rotor (2) and is used for embodying an air flow through the opening (11) of the rotor (2).