Abstract: A permanent magnet electric motor has a stator and a rotor. The stator includes a stator housing having opposed axial ends and magnets affixed to an inner surface of the stator housing, and overmold material overmolded around the plurality of magnets to securely hold the plurality of magnets to the inner surface of the stator housing. The thickness of the overmold material, as measured from the inner surface of the stator housing to an inner surface of the overmold material, is greater at edges of the magnets than at a center of the magnet.

Abstract: A Halbach array is radially disposed in an environment optimized for efficiency and controlled for efficient generation and use of power in order to generate, establish, and maintain a desired level of rotational energy with enhanced efficiency.

Abstract: In a ventilation fan of inner rotor type in which a shaft is fixed to a motor supporting portion, the shaft is held by a shaft holding portion preferably provided by, for example, a metal member. The shaft holding portion includes a cylindrical portion which is fixed to a resin of the motor supporting portion preferably by being embedded through insert molding and into which the shaft is inserted, and a shaft holding flange portion extending outwards in the radial direction from either one of an upper end or a lower end of the cylindrical portion.

Abstract: A spindle motor including a base, a bearing housing supported on the base, a bearing provided within the bearing housing, a rotating shaft rotatably supported by the bearing, a stator including a core fixed to the bearing housing and coils wound around the core, a rotor including a rotor yoke fixed to the rotating shaft, and a first magnet installed on the rotor yoke facing the stator, a turntable positioned on the rotor yoke, rotating together with the rotating shaft, a center guide member coupled to the rotating shaft at an upper side of the turntable, an elastic member disposed between the turntable and the center guide member for elastically supporting the center guide member.

Abstract: The present invention relates to a motor cover including: a first cover formed at one side with a housing coupling unit that is coupled with a motor housing; a second cover coupled to the other side of the first cover; and alignment units formed at the first and second covers to prevent a twist between the two covers by aligning an assembly position when the first cover and the second covers are assembled, and a motor including the motor cover, whereby a twist can be prevented when the motor cover is assembled and a dimensional accuracy can be enhanced.

Abstract: A motor assembly includes a working part, a synchronous motor having a shaft, and a mechanical coupling joining the working part to the motor. The coupling has two driving teeth fixed relative to the shaft, two driven teeth fixed relative to the working part, and two middle members. The coupling provides a predetermined range of angular movement between the motor and the working part. The middle members are circumferentially distributed between the two driving teeth and between the two driven teeth, thereby each of the middle members is movable by the driving teeth to contact the driven teeth and provides an interference between a driving tooth and a driven tooth to drive the working part.

Abstract: An electrical machine rotor or stator having a plurality of salient poles and a barrier that inhibits the flow of air along an axial path between the environment outside the rotor or stator and the space between adjacent pairs of the poles. The barrier serves to reduce acoustic noise.

Abstract: A pump motor assembly operable to provide driving power to a fluid pump includes a rotor, a stator, a case housing the rotor and the stator, and a control assembly mounted to the case and operable to control motor operation. The control assembly includes an information display and a cover overlying the display, with a window section in general alignment with the display. The control assembly also includes a filler plate underlying the window section to prevent any air gap along an underside thereof, allowing the display to be visible while reducing the risk of condensation buildup. The control assembly further includes a low voltage housing with the display disposed in a first compartment defined thereby, and a high voltage housing with a high voltage component disposed in a second compartment defined thereby.

Abstract: Disclosed is an anti-separating structure of a sensing magnet for EPS motor, capable of applying a mechanical coupling force to a magnet and a plate to stably prevent the magnet from being disengaged to an axial and rotational direction, the structure including a plate, and a magnet formed on an upper surface of the plate and injection molded along with the plate, whereby a manufacturing process can be simplified to achieve an excellent adhesive strength.

Abstract: A spindle motor including a base, a bearing housing supported on the base, a bearing provided within the bearing housing, a rotating shaft rotatably supported by the bearing, a stator including a core fixed to the bearing housing and coils wound around the core, a rotor including a rotor yoke fixed to the rotating shaft, and a first magnet installed on the rotor yoke facing the stator, a turntable positioned on the rotor yoke, rotating together with the rotating shaft, a center guide member coupled to the rotating shaft at an upper side of the turntable, an elastic member disposed between the turntable and the center guide member for elastically supporting the center guide member.

Abstract: The present invention provides a wiring method of a motor for connecting a coil wound around an armature of the motor and having a coating layer on a core made of aluminum material to a lead wire connected to power source, comprises the steps of: removing the coating layer on the end position of the coil; electrically connecting the end of the lead wire with the end of the coil in which the coating layer is removed; covering the connected part of the end of the lead wire and the end of the coil with a tube; and performing a varnishing process by impregnating the part covered with the tube with an insulation varnish solution.

Abstract: In a one-piece resin component, a plurality of stackable resin portions is resin-molded integrally with a resin housing of a dynamoelectric machine and radially outwardly projects from the resin housing. Each the plurality of stackable resin portions is adapted to be stacked against a corresponding one of a plurality of stackable resin portions of another one-piece resin component that is generally identical to the one-piece resin component.

Abstract: A brush holder for an electrical motor has an electrically insulating support structure supporting a number of brushes. The support structure has a molded-plastic body incorporating conducting elements forming conductive paths for connecting the brushes to a power supply. A discontinuity is provided in one of the connection paths. A resiliently deformable and electrically conductive strip is connected across the discontinuity with a substantially permanent connection at one end and a heat-meltable connection at the other, with a resilient pre-load tending to break the heat-meltable connection. A voltage drop resistor is provided for operating the motor at a reduced speed. One terminal of the resistor is connected to one side of the discontinuity via a thermally and electrically conducting connection.

Abstract: A method for obtaining, in a quick way, a strong, compact and waterproof permanent-magnet rotor (3), intended for a synchronous motor (1), particularly for pumps of washing machines for industrial and domestic use and the like, of the external stator (2) type, comprising a cylindrical hollow core (6) surrounded by a plurality of permanent magnets (10) comprising the steps of arranging a cup-like body (7) with a base end (8a), a free end (8b) and a side wall (9) exhibiting a plurality of passing longitudinal recesses (12) which define, between the same, a plurality of positioning seats (13) for the magnets (10), providing to insert the core (6) into the cup-like body (7) and arrange the magnets (10) in said seats (13) and injecting a plastic material with obtainment of a cage-like structure (50) having opposite bottoms (27, 28) abutting at the ends (8a, 8b) of the cup-like body (7) as well as columns (29) extended between the opposite bottoms (27, 28) housed in the recesses (12).

Abstract: A method for magnetizing a rotor of an electrical machine is provided. The method includes assembling an array of non-magnetized anisotropic permanent magnet segments around a rotor spindle encased in a metallic ring. The method also includes determining multiple optimal magnetization orientation directions of the non-magnetized anisotropic permanent magnet segments. Further, the method includes positioning the assembled non-magnetized anisotropic permanent magnet segments around the rotor spindle such that the optimal magnetization orientation directions of the anisotropic permanent magnet segments are aligned with multiple flux lines produced by a magnetization fixture. Finally, the method includes energizing the magnetization fixture for magnetizing the segments via a pulse direct current for an optimal duration of the pulse.

Abstract: A method of making a pump (10) including a polymeric pump housing (12) and a drive shaft (14) mounted for rotation in a bearing (16), the bearing (16) having on an exterior surface at least one engagement formation (44), —the method including the step of molding the pump housing (12) around the bearing (16) such that the housing (12) co-operates with the engagement formation (44) to restrict movement of the bearing (16) with respect to the housing (12).

Abstract: An electric motor arrangement for a medical, especially dental, tool handle, which is extremely compact and resistant to sterilizing temperatures due to a plurality of advantageous embodiments. The electric motor arrangement is characterized by the following properties: the use of a light source based on SMD-LED or LED as a semiconductor chip; the shortening of the INTRAmatic coupling to between 20 mm and 25 mm; a hermetically extruded stator comprising integrated media tubes and molded connection sockets; the stator winding is embodied as a coil segment winding instead of an H winding or triangle; and the winding head has openings for media tubes.

Abstract: Heat discharging property of the stator coil end is improved effectively in a rotating electric machine. A motor as the rotating electric machine includes a stator and a rotor. The stator includes a stator core and resin mold coil ends provided on both axial ends thereof. Column-shaped projections projecting in the axial direction are provided on axial side surfaces of resin mold coil ends at a plurality of positions. Cooling oil supplied from above the resin mold coil ends effectively cools the resin mold coil ends.

Abstract: Disclosed are a split stator and a manufacturing method thereof with which insulation reliability can be improved by preventing deformation or cracking of the insulator by eliminating slippage of the insulator at the coil end face. A slip prevention mechanism that prevents slippage of the insulator is provided at the coil end face, and using insert molding, the insulator is integrally molded to a split stator core provided with the slip prevention mechanism.

Abstract: A rotor for a motor includes a shaft having an outer periphery with an engaging portion. At least one coupling member includes an engaging hole. The shaft extends through the engaging hole of the at least one coupling member. The at least one coupling member is engaged with the engaging portion of the shaft by tight coupling. A plastic magnet envelops the shaft and the at least one coupling member by injection molding. The at least one coupling member prevents the plastic magnet from disengaging from the shaft, providing enhanced engaging effect while reducing structural complexity and enhancing assembling convenience.

Abstract: Disclosed is a rotor (1) for an electric rotor motor, consisting of a rotor bell (2) with a peripheral wall (4) and at least one one-sided rotor base (6) to enclose a stator, in particular as a part of a motor housing with a high IP rating, for example IP54 per DIN/IEC-EN 60034-5. The rotor bell (2) features a heat sink (12) with high heat conductivity that extends through the rotor base (6) in such a way that the motor heat arising on the inside can be removed via the heat sink (12) through the rotor base (6) to the outside into the environment. Further, the invention relates to an electric rotor motor, in particular with an encapsulated motor housing with a high IP-protection system, for example IP54 per DIN/IEC-EN 60034-5, consisting of a stator and a rotor (1) enclosing the stator in an embodiment of the above-described type.

Abstract: An impeller and at least a portion of a cooperating peripheral volute may be integrated are integrally injection molded with, concentric outer rotor and inner stator assemblies, respectively, to achieve a low profile precision impeller mechanism based on an improved brushless D.C. motor with low length to diameter ratio and suitable for use in a variety of other applications. A rotating cap has an inner circumference which is molded about an outer ferromagnetic back ring that in turn supports a rotor magnet having a number of poles of alternating polarity and separated by a relatively small cylindrical air gap from a fixed stator assembly. The fixed stator assembly is integrally molded into a base housing having a bearing support that extends upwardly through the center of the stator assembly and that is rotatably coupled to a rotating shaft that extends downwardly from the center of the rotating cap.

Abstract: A rotor that includes a rotor core assembly secured to a shaft. The rotor core assembly includes a magnet and an end cap secured to an end of the magnet. Each of the magnet and the end cap has a bore into which the shaft extends. The end cap forms an interference fit with the shaft. The magnet forms a clearance fit with the shaft and an adhesive is located in the clearance between the magnet and the shaft. Additionally, a method of manufacturing the rotor. The method includes inserting the shaft into the bore of the end cap. An adhesive is then introduced into the bore of the magnet and the shaft is inserted into the bore of the magnet so as to cause adhesive to be drawn into the clearance defined between the magnet and the shaft.

Abstract: A rotor core assembly that includes a magnet, a first end cap located at an end of the magnet, a second end cap located at an opposite end of the magnet, and a sleeve that surrounds the magnet and the end caps. The sleeve forms an interference fit with each of the end caps, and an adhesive is located between the magnet and the sleeve. Additionally, a method of manufacturing the rotor core assembly.

Abstract: A motor include a rotor to rotate a drum of the washing machine, and the rotor includes a base, a ring-shaped rib formed at the edge of the base, and a back yoke ring connected to the ring-shaped rib. The back yoke ring is inserted into the ring-shaped rib while the base is formed by injection molding.

Abstract: The invention relates to a DC motor 1 comprising a cylindrical coil carrier 7; 17 comprising wire guide element 9; 10, 12 for guiding a first winding wire 80; 180 and a second winding wire 81; 181 of an air-gap winding on both side end sections, wherein the first winding wire 80; 180 and the second winding wire 81; 181 each comprise rectangular winding segments 20; 120, wherein the rectangular winding segments 20; 120 of the second winding wire 81; 181 are disposed overlapping on the cylindrical coil carrier 7; 17 and the wire guide elements 9; 10, 12 are designed for guiding the first winding wire 80; 180 and the second winding wire 81; 181 past each other.

Abstract: The invention relates to an actuator (1), having a motor (2) and an actuator component (3) operable by the motor (2), having a movable gear component (4) with a limit stop component (5a, 5b), and at least one limit stop element (6) with a reference plane serving as stop for the limit stop component (5a, 5b) of the gear component (4), wherein at least one limit stop element (6) and/or the first and/or the second limit stop component (5a, 5b) is/are made from a high-temperature plastic material. Furthermore, the invention of such an actuator (1) relates to the use of such an actuator for the headlamp leveling of a headlamp.

Abstract: A motor includes a stator having a stator iron-core on which a winding is wound, a rotor having a rotary body holding a permanent magnet opposed to the stator along a circumferential direction and a shaft joined to the rotary body such that it extends through the rotary body at the center, bearings supporting the shaft, two conductive brackets for fixing the bearings, and a printed circuit board on which a drive circuit for driving the winding is mounted. A dielectric layer is provided between an outer wall of the rotary body and the shaft, the two brackets are electrically connected together, and a capacitor is connected between the stator iron-core and the brackets for adjusting impedance.

Abstract: To improve tranquility and controllability of an iron core-equipped permanent magnet motor with an improved maximum energy product (BH)max by improving shape compatibility of a radial anisotropic magnet, there is provided a radial anisotropic magnet manufacturing method of fixing magnet powder in a net shape so as to maintain a magnetic anisotropic (C-axis) angle of a magnet with respect to a tangential line and for performing a deformation with a flow so as to have a predetermined circular arc shape or a predetermined annular shape. Particularly, by performing a deformation with a viscous flow or an extension flow, a deformability of the magnet is improved, and thus shape compatibility with respect to a thickness is. improved. A C-axis angle ? with respect to a tangential direction is controlled at an arbitrary position and an arbitrary angle so as to reduce cogging torque without separating a magnetic pole into segments.

Abstract: A motor includes a stator integrally molded together with a stator member, which includes a stator iron-core wound with a winding, by insulating resin, a rotor mounted on a shaft as a center and confronting the stator, two bearings supporting the shaft rotatably, brackets fixing the bearings, and a drive circuit board including a drive circuit which supplies an electric current to the winding and drives the rotor. Either one of the two bearings includes an outer ring and an inner ring both of which are electrically insulated from each other.

Abstract: A method for producing a core and a method for producing an electrical machine. Said core has a body of soft magnetic material having a plurality of teeth and at least one magnetic flux cross section area enlarging element being made from a composite of a soft magnetic powder and a binder, said magnetic flux area enlarging element being arranged onto a tooth of said body.

Abstract: A stator includes an annular stator core and a stator coil. The stator coil is formed of a plurality of electric wires mounted on the stator core. The stator coil has a coil end part that protrudes from an axial end face of the stator core so as to be located outside slots of the stator core. The electric wires forming the stator coil are grouped into a plurality of electric wire sets. Each of the electric wire sets consists of a predetermined number of the electric wires which are electrically connected to one another. The stator coil further includes a plurality of bridging wires. Each of the bridging wires extends, on an axially outer periphery of the coil end part of the stator coil, to electrically connect a corresponding pair of the electric wire sets. Further, at least two of the bridging wires are fixed to one another.

Abstract: An electric motor assembly including a stator assembly and a rotor assembly extending through the stator assembly. A first end cap is located adjacent to a first end of the stator assembly and includes a bearing insert supporting a first end bearing for receiving an end of a rotor shaft. A second end cap is located adjacent to a second end of the stator assembly. An endbell is formed separately from the second end cap and is positioned within the second end cap. The endbell supports a bearing for a second end of the rotor shaft. An overmold material extends through the stator assembly.

Abstract: A spherical rotor wet rotor motor centrifugal pump having an electric motor that has a plastic encapsulated electrical motor stator and where plastic may also separate the electrical motor stator from coming in contact with the pumped fluid and where plastic may also form the housing of the electrical motor stator.

Abstract: The invention relates to an electric motor with an outer rotor and an inner rotor, wherein the stator carrying the excitation coils is formed as a hollow cylinder and is arranged between the cup-shaped outer rotor and the inner rotor and is rigidly connected on the front to the housing or to a part of the electric motor rigidly connected to the housing, wherein the stator comprises a plurality of stator teeth which rest against supports extending in the axial direction, wherein the supports are formed by an injection moulding composition of plastics material, in particular a thermosetting plastics material which fills the space between the respectively adjacent excitation coils and the stator teeth, the supports extending into and/or through the metallic housing or a metallic part rigidly connected to the housing and rest against it.

Abstract: Disclosed herein is a stepping motor for a slim optical disk drive (ODD). A casing which protects and covers a stator of a motor part is divided into two casing parts, and a casing part adjacent to an end of a rotating shaft has at least two insert holes in an end plate thereof. Thus, a support member which supports a center guide is fastened to the casing in such a way that the support member is inserted into the insert holes. The casing part adjacent to the end of the rotating shaft is integrally formed with the support member by insert molding. Therefore, the stepping motor of the present invention can satisfy the trend of a reduction in size and thickness.

Abstract: A rotary machine (e.g., motor or generator) has end caps with plastic piloting rings that engage a stator's plastic winding frame in an interference fit, so that a rotor seated by bearings in the end caps is properly aligned with the stator. The flexibility of the plastic-to-plastic fit allows looser tolerances in comparison to machining of all-metal end caps, while the average circle of the piloting ring's outer diameter still assures proper concentricity of rotor shaft, bearings, piloting rings and stator.

Abstract: Provided is a stator for use in a brushless direct-current (BLDC) that is used for a direct drive (DD) apparatus for drum-washing machines that is mounted in an allowable space without reducing size of a tub related to a laundry capacity in a drum-washing machine, to thereby make a basket in the inside of the tub rotationally driven in a direct drive method.

Abstract: A first motor case (52) comprises a partition unit (52A) of annular shape that is formed on a surface facing a first space (P1) that is formed between the first motor case (52) and a gear case (70). The gear case (70) is fitted into the partition unit (52A).

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: An electric motor includes: a rotor configured to rotate about a rotating shaft; a stator having a coil; and a mold resin configured to mold the stator. The stator includes a bus ring which is provided along a circumferential direction of the stator and which is connected to the coil. The bus ring has a terminal exposed from the mold resin to the outside. The terminal is held by a terminal holder provided outside the mold resin.

Abstract: A base for a heat-dissipating fan motor includes a plate member made of metal, a coupling barrel made of plastic, and an outer case made of plastic. The plate member is formed with at least one positioning leg and at least one air inlet hole. The plate member has a motor-confronting side, and the positioning leg extends inclinedly and protrudes from the motor-confronting side. The coupling barrel is adapted for coupling with the heat-dissipating fan motor, and has a closed-barrel end that has the positioning leg embedded therein, and an open-barrel end opposite to the closed barrel end. The outer case is connected to the plate member, cooperates with the coupling barrel to form a motor-receiving space, and is formed with an air outlet hole.

Abstract: A resin injection molded rotary member having an insertion hole into which a shaft member is inserted, the resin injection molded rotary member rotating integrally with the shaft member inserted in the insertion hole or rotating relative to the shaft member, includes a central rotation axis, first and second shaft support portions positioned at respective end portions in a direction of the central rotation axis to be in contact with the shaft member, and an intermediate portion arranged between the first and second shaft support portions, the resin injection molded rotary member (X) including a thickness defined between outer and inner surfaces in one of radially outward directions from the central rotation axis, the thickness of the resin injection molded rotary member being configured so that a thickness of the intermediate portion is smallest at a position adjacent to the first shaft support portion or the second shaft support portion.

Abstract: A rotor of an electric motor is provided in which a permanent magnet holding member can be assuredly fixed to a rotor main body and the rotor main body can be easily worked and inexpensively manufactured. In a rotor, a plurality of permanent magnets 21 are held in a permanent magnet holding member 29 made of a synthetic resin and fixed to an outer peripheral part of a cylindrical rotor main body 28. An outer peripheral surface of the rotor main body 28 is a cylindrical surface. Rotation prevention recessed parts 30 are formed at a plurality of parts in the circumferential direction of the outer peripheral part in both end parts of the rotor main body 28. The permanent magnet holding member 29 includes annular parts 31 which come into close contact with the outer peripheral parts of both end faces of the rotor main body 28 and connecting parts 32 which connect both the annular parts 31 on the outer peripheral surface of the rotor main body 28 and hold the permanent magnets 21.

Abstract: A molded motor having a stator having an annular stator core coated with molding resin has a motor case which joins the stator. The motor case has a rib portion formed at the outer circumference of the junction face between the motor case and the stator.

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: The motor including a stator having a stator core, and an insulator provided to the stator core for winding a coil thereon, a rotor rotatably provided with respect to the stator, and a tap terminal provided to the insulator for positioning an end of the coil, wherein the coil includes a core wire of aluminum.

Abstract: A motor stator includes a plurality of stator cores constituted of divided cores and cassette coils which are conductive coils. One of the divided core and the cassette coil is integrally formed with an insulator of a thermosetting resin by insert molding. A stator assembly including the plurality of cassette coils is covered with a thermosetting resin by molding to produce the state.

Abstract: A vehicle windshield wiper motor including an output shaft and an attachment device for attaching a mounting structure onto a tube, the attachment device including an attachment base and a plate. The base includes at least five attachment members for attaching parallel rods therebetween, three attachment members forming a first group being spaced around the output shaft of the motor, and two attachment members forming a second group being placed at a sufficient distance from at least one of the three attachment members of the first group to form a cavity capable of holding the tube, the cavity being closable by the plate. A mounting structure can mount such a windshield wiper motor.

Abstract: A positioning structure for a stator assembly of a cooling fan has a fan base and a stator assembly. The fan base has a central hub projected thereon for connecting to one end of an axial tube is received in the central hub. The fan base is further formed with a plurality of first engagement portions at a plurality of positions away from a hub base of the central hub. The stator assembly has an axial hole sleeved on the axial tube and a plurality of second engagement portions which can be engaged with the first engagement portions. Thus, the stator assembly can be rapidly and stably installed on the fan base.