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. The overmold material may form the first end cap, supporting the bearing insert therein, and extends within and substantially fills an annular space within the second end cap.

Abstract: A motor damping structure for an actuator device includes a motor housing and a casing. The motor housing includes a drive motor therein. The casing includes an upper actuator case and a lower actuator case to accommodate the motor housing therebetween, the casing including a motor support section formed integrally in at least one of the upper actuator case and the lower actuator case to support the drive motor by contacting an outside surface of the motor housing. The motor support section has an elastic contacting member protruding from the at least one of the upper actuator case and the lower actuator case to contact one of an upper slanted surface and a lower slanted surface of the motor housing.

Abstract: The invention relates to a DC current machine, in particular a DC current motor for driving a blower of a motor vehicle, with a pole housing forming the stator of the machine, a rotor that is rotatably mounted in two bearing plates, and with a brush support for supplying current to the rotor. According to the invention, a support is integrated into the brush support, with de-tensioning for the electrical connecting cables of the machine, which means that a secure fastening, de-tensioning, and insulation of the connecting cables is achieved without additional components and without additional expense in the assembly of the machine.

Abstract: An electric compressor provided with an integral inverter, incorporated with a motor and provided in a receiving space surrounded by a compressor housing with a motor drive circuit that includes the inverter. At least some of electric parts including the motor drive circuit are covered by a resin charged into the receiving space, and a part of a region which is in the receiving space and into which the resin can be charged is filled with a light-weight material different from the charged resin. In the structure of the resin covering section for such a motor drive circuit, the amount of resin charged is significantly reduced, and the entire compressor is reduced in weight and cost.

Abstract: A rotary pump with a plastic pump housing, that can be processed by injection molding, with a first housing part defining a pump space, which is connected to a second intermediate housing part accommodating an electric motor with a wound core stator. The rotary pump includes a plastic split core, the wound claw pole stator being mounted on the split core and a permanent magnetic rotor being mounted to rotate within the split core. A plastic motor housing part defines a motor space, wherein at least three axial and parallel split core ribs are provided between the split core and the claw pole stator, the ribs being distributed about the periphery of the split core at predetermined angles relative to each other. A return ring has first and second end sections, the return ring being connected to the wound claw pole stator, so that the first and second end sections are welded to each other. The stator is press-fit onto the split core via the ribs.

Abstract: A permanent magnet rotor for an brushless electric motor of the kind having an internal stator, has a supporting structure made of molded plastic that includes an essentially disc-shaped portion to which a shaft is centrally connected. The periphery of the disc is joined to an essentially cylindrical cage portion which extends coaxially around the shaft. A plurality of magnetically conductive yokes are disposed in the cage portion. The yokes are shaped as ring segments which as a whole form an essentially cylindrical wall. A plurality of ring segment permanent magnets are each disposed astride the junction of a pair of adjacent yokes. Each yoke has a dimension which increases from the circumferential ends thereof towards its circumferentially intermediate portion, such that the cross-sectional area of the yoke in a radial plane correspondingly increases from the ends thereof towards its intermediate portion.

Abstract: An electrical rotating machine which includes: a rotor; a stator provided with an armature winding, the rotor and the stator being housed in a housing space formed by a front bracket and a rear bracket; and a rear cover provided with a circumferential side wall and a bottom wall and disposed near the bottom of the rear bracket. The rear cover includes a plurality of engaging openings formed in the circumferential side wall of the rear cover, and steps of the engaging openings each produced by the difference between the diameter of the side wall on the bottom wall side and the diameter of the side wall on the end opening side. The bracket has engaging portions inserted into the corresponding steps for fixing the rear bracket.

Abstract: Electric generator is disclosed having a stator and a rotor. The rotor being rotatable around a centre axis and relatively to the stator and the stator includes a number of stator windings extending in freely exposed end windings. The stator and/or the rotor is provided with at least one barrier means which barrier means axially extends to such a manner that at least the end windings of the stator are at least partially covered.

Abstract: A motor includes a stator having boss portions on an end plate thereof, a front plate provided on an upper surface of the stator, and a band connecting the stator and the front plate. Recess portions are formed adjacent to an outer peripheral edge of the front plate, and a protruding portion is provided in each recess portion. The band has a bottom plate part and attachment parts. The bottom plate part includes notched portions. Each attachment part includes an engagement portion at a tip end thereof which includes a notched portion. The notched portions of the bottom plate part are fitted with the boss portions of the end plate, and the notched portions of the engagement portions are fitted with the protruding portions of the front plate to form engagement hooks at most tip ends of the engagement portions, respectively, thereby connecting the stator and the front plate.

Abstract: A motor includes a stator, a bearing, a cover, a shaft, a rotor holder and a rotor magnet. The cover member includes an outer cylinder portion arranged to support the stator on the inner surface thereof, an inner cylinder portion arranged to support the bearing on the inner surface thereof and a bottom portion arranged to interconnect the lower end of the outer cylinder portion and the lower end of the inner cylinder portion. The stator includes a stator core, an insulator arranged to cover the stator core and coils. The cover member is preferably formed by press-forming a single metal plate member. The insulator includes a protrusion portion positioned radially outwards of the coils to protrude upwards higher than the upper end of the outer cylinder portion. The upper ends of the coils are positioned higher than the upper end of the outer cylinder portion.

Abstract: The invention relates to a drive device (1), in particular for window wiping devices in motor vehicles, having a motor housing (2) which is fixed to a gearbox housing (3) which has a housing upper side (7), and having an air-permeable diaphragm (14) which closes off an opening (15) which is provided in the gearbox housing (3), said diaphragm (14) having the purpose of equalizing pressure when fluctuations in temperature occur. The invention provides that the diaphragm (14) is arranged on a housing side section (16) which runs at an angle to a housing upper side (7). In addition, the invention relates to a motor vehicle having a mounted drive device (1).

Abstract: In attachment structure for motor assembly, accommodating portion with a bottom is formed in housing such that the motor assembly including commutator motor and brush holder unit is accommodated therein with the brush holder unit facing downward. Receiving portion for positioning the brush holder unit is formed in the accommodating portion. Abutment portion is formed on the brush holder unit for positioning between stator and the brush holder unit. The motor assembly is positioned within the accommodating portion such that the brush holder unit is in contact with the receiving portion and that the stator and the brush holder unit are brought into contact with each other through the abutment portion. Fixing member is inserted from an open side of the housing, brought into contact with the stator, and fixed to the housing, so that the motor assembly is interposed between the fixing member and the receiving portion.

Abstract: A motor, including: a body, including a housing, a stator, and a rotor; and a controller, including a control box, and a control board. The body is disposed at the top of the motor. The controller is disposed at the bottom of the motor. The control board is disposed in the control box. A debug window is disposed on side wall or at the bottom of the control box. A sealing cover is disposed on the debug window. The sealing cover can be opened. The control board can be exposed for wire connection, adjustment of parameters of electronic components, and fixation of a rotating shaft according to requirements of users for installation and use.

Abstract: The stator of an electric rotating machine includes a stator core constituted of a plurality of split cores joined to one another in a ring, a plurality of phase windings wound around the stator core, and an outer casing to an inner periphery of which an outer periphery of the stator core is fitted with clamping margin therebetween. The outer casing is provided with a brim including at least two brim portions at least at one of axial ends thereof. The brim portions are spaced from each other in a circumferential direction of the outer casing and project in a direction receding from a center axis of the outer casing.

Abstract: A starter motor for an engine includes a motor casing made of electrically conductive material and an end bracket fixed to one end of the motor casing. The end bracket comprises a base with brush cages integrally formed therewith, brushes mounted in the brush cages and a conductor electrically connected to the brushes and motor casing. The base is a single piece made of electrically insulating material and coaxial mounting holes are formed in the base and motor casing for fasteners to fix the starter motor to a housing of the engine.

Abstract: A submersible electric motor has feature to enhance thermal conductivity from the motor interior to the exterior. The motor has a cylindrical housing and a stator rigidly mounted within housing. A rotatable rotor is located within the stator. A gap formed between the stator's outer diameter and the inner wall of the housing is filled with a high thermal conductivity material to improve heat transfer from the motor. The remaining portion of the housing may be filled with a dielectric lubricant that has lesser thermal conductivity than the high thermal conductivity material.

Abstract: A spring plate includes an engaging portion, a connecting portion, a first elastic portion, a second elastic portion, a first fixing portion, and a second fixing portion. The first elastic portion and the second elastic portion are connected to the engaging portion and the connecting portion, the first fixing portion and the second fixing portion are formed on opposite ends of the connecting portion. The engaging portion defines a recess. The present disclosure further provides a voice coil motor using the spring plate.

Abstract: A voltage regulator negative electrode terminal is mounted to an axially outer end surface of a rear bracket so as to be in a state of electrical connection with the rear bracket by fastening a flange portion to a mounting pedestal of the rear bracket using a voltage regulator fixing second screw. A screw loosening restricting lug is disposed so as to project from a floor portion of a protective cover so as to face the voltage regulator fixing second screw so as to have a predetermined clearance in an axial direction.

Abstract: A motor may include a stator formed with a rotor arrangement hole, a rotor disposed in the rotor arrangement hole, and a plate-like member disposed on at least one end side in an axial direction of the stator. The plate-like member is joined with an end face of the stator structured such that a peripheral edge part of the plate-like member is melted. In this case, it is preferable that the peripheral edge part of the plate-like member is joined with the end face of the stator structured such that an edge part on an opposite side to a face contacting with the end face of the stator is melted by irradiation of a laser beam.

Abstract: A driving device (100) is provided with first and second rotating electrical machines (MG1, MG2); an inverter (30); a first storing case (23) having a first rotating electrical machine storing section (21) for storing the first rotating electrical machine (MG2), and an inverter storing section (300) for storing the inverter (30); and a second storing case (13) which can store the second rotating electrical machine (MG1) and can be attached to the first storing case (23); a first terminal section (121) connected to the inverter; and a second terminal section (15) which is arranged on the second storing case (13) and is connected to the second rotating electrical machine (MG1). The first terminal section (121) and the second terminal section (15) are arranged so that one protrudes toward the other.

Abstract: Provided is an automotive alternator having structure for preventing entry and discharging of foreign matters irrespective of a posture of a brush unit, to thereby allow normalization of the brush unit. The brush unit of the automotive alternator includes a slip ring, a brush, a brush holder, and a slip ring cover coaxially spaced from the slip ring and having an inner peripheral surface surrounding substantially an entire periphery of the slip ring. The inner peripheral surface of the slip ring cover has a tapered surface increasing in diameter from a first end on the frame side toward a second end having a fully-open opening. The fully-open opening is sealed by a sealing member that forms a labyrinth seal with the second end.

Abstract: A drive device includes a rotating electrical machine; a control device that controls the rotating electrical machine; and a case that accommodates the rotating electrical machine and the control device. The case includes a machine chamber that accommodates the rotating electrical machine, and an electric chamber that accommodates the control device. The machine chamber and the electric chamber are separated from each other by a partition wall, and a connection member that electrically connects the rotating electrical machine and the control device to each other is provided so as to extend through the partition wall in a fluid-tight state. Each of the machine chamber and the electric chamber has an opening on one axial end side of the rotating electrical machine, and a cover that covers the openings in a separated state from each other is mounted to the openings.

Abstract: A motor, including a body, including a housing, a stator, and a rotor, and a controller, including a control box, and a control circuit board. The body is disposed at the top of the motor. The controller is disposed at the bottom of the motor. The control circuit board is disposed in the control box. A rotary dip switch is disposed at the bottom of the control box. The control circuit board includes a power board, and a control board. The rotary dip switch is electrically connected to the control board. The rotary dip switch controls different functions of the motor.

Abstract: A housing for a rotating electrical machine includes a first housing block, a second housing block, a seal member, and a positioning pin. The first and second housing blocks define a breathing passage to communicate an inner space defined by the first housing block and the second housing block with an outside space of the first housing block and the second housing block. The breathing passage includes a first end hole and a second end hole. The first end hole is provided at the axial end of the first housing block. The second end hole is provided in the second housing block and faces the first end hole. The positioning pin is inserted in the first and second end holes of the breathing passage.

Abstract: An engine generator is disclosed in which an engine drives a generator and causes a cooling fan to rotate to cool the generator. The generator includes an intake duct having an intake port provided in a lower portion thereof and oriented downward. Moisture-containing outside air sucked through the intake port impinges on a barrier plate disposed in the intake duct. The barrier plate is located above the intake port and faces the intake port. The moisture adheres to the barrier plate in the form of water droplets, which then fall toward the intake port after having separated from the outside air.

Abstract: An electrical actuator comprising a housing of plastic with a reversible low voltage motor (2), electrical equipment for controlling and supplying the motor with power, where the electrical equipment (19,15) is enclosed in an enclosure (20) of fire resistant material. By this the housing (1) can be designed according to strength, hygiene and sealing, while fire prevention as a result of defect in the electrical equipment can be limited to the separate enclosure.

Abstract: A method of making a pole housing for an electric motor is provided. The pole housing may be used in both sealed and unsealed applications.

Abstract: A power plant for a jet-type model airplanes and UAVs includes an electric motor and a cover. The cover receives a portion of the electric motor and a sleeve into which the electric motor is inserted. The sleeve has a plurality of fins to dissipate heat and create openings into the cover. Air from the fan rotor passes through the openings to cool an electronic speed control member and exits a rear opening in the cover. The cover may also have additional openings for air to enter into the cover.

Abstract: A mounting structure for mounting a device to an electric motor having an output shaft has a body including an opening for receiving the output shaft through the body. A plurality of connector elements are supported by the body. The mounting structure includes a plurality of threaded inserts. Each of these inserts is inserted in one of the connector elements for receiving a fastener to connect the body to the motor. Each connector element is sized and shaped for alternatively receiving an insert in at least two, non-coincident locations. The mounting structure can be combined with an electric motor to produce an electric motor assembly that can be mounted on a pump or other device so the device is powered by the motor.

Abstract: A motor fixing structure and a motor assembly capable of reducing vibration of a motor and also maintaining a compact configuration. The motor assembly includes a motor, a fixing member disposed to be spaced from the motor by a predetermined spacing distance, and a vibration absorbing member to prevent vibration of the motor from being transferred to the fixing member, wherein the vibration absorbing member is formed to be longer by a predetermined specified length than the predetermined spacing distance between the motor and the fixing member and is disposed outside of a periphery of the motor.

Abstract: An electric motor having a rotation shaft includes a motor housing into which the electric motor is accommodated, at least one pair of rolling bearings positioned in the motor housing and rotatably supporting both ends of the rotation shaft, and a displacement restriction member provided inside the motor housing and restricting a displacement of the rolling bearing in an axial direction of the rolling bearing. Each rolling bearing includes an inner race, an outer race, and rolling elements rotatably supported between the inner race and the outer race. The inner race is press fitted without any gaps onto an outer peripheral surface of the rotation shaft, and the outer race is press fitted without any gaps into a bearing attachment portion provided inside the motor housing.

Abstract: A direction in which cooling air generated by a cooling fan flows to be discharged is perpendicular or nearly perpendicular to a direction in which diffusers are inclined. Thus, airflow resistance is increased by the diffusers, and the cooling air cannot be efficiently discharged from discharge ports provided circumferentially in an outer peripheral portion of a housing. Further, a stator coil cannot be sufficiently cooled.

Abstract: A motor for HVAC applications, has a stator; a motor housing forming a part of the stator; an end cap fixed to the motor housing, and a rotor rotatably mounted confronting the stator. The end cap has an opening formed by a ring-shaped collar, the collar being at least partly disposed inside the motor housing. A plurality of projections on an outer circumferential surface of the collar are received in a plurality of receiving cutouts in the motor housing. Two fingers formed at the opening of each receiving cutout are deformed to lock the received projection inside the respective receiving cutout. At least three of the projections being pressed against the axially inner end of the respective receiving cutout.

Abstract: An electric motor has a housing, a rotor rotatably installed in the housing, n permanent magnets with the same polarity fixed at an inner surface of the housing. The rotor is a wound armature having a plurality of teeth extending in a radial direction. The housing includes n inner projecting parts, the permanent magnets and the inner projecting parts being alternately arranged in a circumferential direction about the rotor. The magnets generate 2n magnetic circuits via the housing and the rotor, n being an integer greater than one. The size of at least a portion of a first air gap formed between the permanent magnets and the rotor is greater than the size of at least a portion of a second air gap formed between the inner projecting parts and the rotor.

Abstract: A superconducting apparatus includes a magnetic field generating portion including a superconducting coil, an extremely low temperature generating portion maintaining the superconducting coil at an extremely low temperature and in a superconducting state, a container defining a heat insulation chamber that accommodates the superconducting coil, a first terminal electrically connected to the superconducting coil and supplying an electric power to the superconducting coil, a second terminal connected to an external electric power source and supplying the electric power to the first terminal in a case where the magnetic field generating portion is driven, and a heat penetration preventing element holding one of the first and second terminals and thermally separating the first and second terminals from each other in a case where a driving of the magnetic field generating portion is stopped, the heat penetration preventing element restraining a heat penetration from the second terminal to the first terminal.

Abstract: A fluid deflecting baffle is provided for use on an electric motor to be used in an environment where liquid may otherwise pass through a vent opening in an endshield of the motor. The baffle is secureable to the endshield and extends in a partial covering relationship with the vent opening. The baffle includes a vent passage therethrough and has at least one liquid flow obstructing louver that extends across the vent opening to deflect liquid away from the vent passage while allowing venting air to flow through the vent passage. The louver includes a generally flat liquid deflection surface that is disposed at an oblique angle relative to the axis of the motor and at least partially faces a venting direction of incoming air and fluid.

Abstract: A motor shield covered on a motor of a drainage device over a cooling vane is disclosed to include a shield body having an arched portion and a straight portion, a guide wall disposed in the shield body and having an arched segment and a straight segment connected to the straight portion of the shield body, an airflow zone defined in the shield body in an interference relationship relative to the cooling vane and surrounded by the arched segment and straight segment of the guide wall and the arched portion and straight portion of the shield body, horizontally extending air outlets and vertically extending air outlets respectively located on the arched portion and straight portion of the shield body, and air inlets located on the periphery of the shield body. During rotation of the cooling vane, a flow of air is induced to carry heat out of the shield body through the vertically and horizontally extending air outlets efficiently.

Abstract: A housing member for use in a disk drive apparatus includes a rectangular bottom portion and a side wall portion arranged to extend upward from an outer circumferential portion of the bottom portion. The side wall portion includes four outside surfaces including a first outside surface and a second outside surface perpendicular or substantially perpendicular to the first outside surface. The first outside surface includes a first cutting base region. The second outside surface includes a second cutting base region. The bottom portion includes a bearing fixing portion arranged to fix a bearing mechanism of a motor arranged to rotate a disk.

Abstract: An electric motor assembly is configured to be mounted within a machine in a selected one of multiple possible motor dispositions corresponding with different motor axis positions. The motor assembly includes an endshield having a pair of opposite generally radially-extending mounting flanges. Each mounting flange presents an engagement portion that includes a plurality of spaced apart, dissimilarly-shaped recesses that extend in a generally common direction. The pair of flanges cooperatively present corresponding sets of like-shaped recesses, each of which is associated with one of the motor dispositions, but only one of the sets of recesses extends entirely through the engagement portions to define a single set of like-shaped fastener-receiving through holes corresponding to the selected motor disposition. A method of manufacturing components for electric motor assemblies configured to be mounted within respective machines in a selected one of multiple possible dispositions is also disclosed.

Abstract: A motor includes a base plate and an armature having two or more arms mounted to the base plate for rotation about an axis. At least two powerstroke solenoids are positioned on each arm for applying force effecting first rotational motion of the armature. At least one reset solenoid is positioned on each arm for applying force effecting second rotational motion of the armature opposite the first rotational motion. Means are provided for sequentially applying current to the powerstroke solenoids and then to the reset solenoids to effect an oscillating motion of the armature. Further means are provided for transferring the first rotational motion to a disk cylinder rotatably mounted to the base plate for rotation about the axis, but for restraining the transfer of the second rotational motion to the disk cylinder.

Abstract: A motor is provided with a set of end cap guides on the ends of a stator winding assembly to pilot the placement of end caps into the correct placement relative to the stator winding assembly so that the rotor assembly is maintained concentric with the stator. The end cap guides may be rings fitting within the winding insulators on the ends of the stator stack or may be integrated as guide segments with the winding insulators to outline an interrupted cylindrical inner surface coinciding with the inner diameter of the stator winding assembly. The guides allow proper positioning of the rotor assembly without increasing the stator stack length.

Abstract: An assembly includes a frequency converter, a motor, and an adapter. The frequency converter and the motor both have housings with an opening. The adapter has a base part and a circuit board having first and second electrical connecting elements supported over a portion of a central opening of the base part. The adapter is between the housings with the central opening being between the openings of the housings. The base part is mechanically connected to the housings with the first electrical connecting element of the adapter engaging an electrical connecting element of the frequency converter via the opening of the converter housing and the central opening and with the second electrical connecting element of the adapter engaging an electrical connecting element of the motor via the opening of the motor housing and the central opening whereby the frequency converter and the motor are connected via the adapter.

Abstract: A motor pump for a headlamp cleaner includes a motor, a control circuit board for driving the motor, an impeller rotatable by the motor, a plurality of terminal pieces adapted to be coupled to an outside connector, and a casing. The casing includes a pump chamber having a washer fluid suction port and a discharge port and inside which the impeller is accommodated, a motor housing chamber disposed above the pump chamber and inside which the motor is accommodated, a board housing chamber inside which the control circuit board is accommodated, and a connector portion extending outwardly in a cylindrical shape and inside which the plurality of terminal pieces extends. The connector portion is provided such that one of the terminal pieces is directly coupled to the motor.

Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.

Abstract: A shaft support system 7 for an electric motor 1, comprising a rolling bearing 17 provided with an inner race 33 and an outer race 34, at least one angular position sensor 20 for detecting the angular position of the inner race, an encoder 19 mounted on the inner race, a flange 16 for supporting the outer race of the bearing, and a processing module 18 supported by the flange.

Abstract: A motor includes a tubular housing having flat side walls along each side of rectangular joined with each other by joining sections, a magnet, having magnet poles in the jointing section, disposed along the inner peripheral surfaces of the housing, a shaft inserted along the axis of the housing, an armature fixed to the shaft in such a position as to be opposite to the magnet, a commutator mounted on the shaft, a carbon brush in sliding contact with the outer peripheral surface of the commutator, and electrical components provided within the housing. The electrical components in the longer direction are arranged such that they are not parallel with all the sides of the housing.

Abstract: A motor includes a stator, a case and a supporting portion. The stator formed by laminating plural disc plates includes a yoke portion having a plurality of first and second portions alternately formed in a circumferential direction of the stator, and plural tooth portions respectively radially protruding from an inner circumferential surface the yoke portion at the second portion of the yoke portion towards an axial center of the stator. The case provided at an outer circumference of the stator includes a first communicating passage extending in an axial direction of the stator to be in communication with both axial ends of the stator and defined by an inner circumferential surface of the case. The supporting portion protrudes from an inner circumferential surface of the first communicating passage towards the stator and contacts an outer surface of the stator at one of the first portions of the stator.

Abstract: An overload protection device includes a chassis, a motor, a pair of resilient members, and at least one of electrode. The motor is received in the chassis and includes a stator having a spiral groove defined on the stator and a pair of electrical conductive contacts attached on the stator, a rotor rotatably received in the stator at one end and protruding from the stator at another end. The resilient members are positioned between the chassis and two opposite ends of the motor. The at least one friction bump is attached on the inner side of the chassis and frictionally engaged in the spiral groove of the motor. The electrodes are separately attached on the inner side of the chassis and electrically coupled to electrical conductive contacts of the motor for supply power.

Abstract: A rotating machine comprises a stationary subassembly, a rotating subassembly, and a first circumferential track. The stationary subassembly includes a plurality of stator elements disposed proximate an inner circumference of a portion of the stationary subassembly, and a casing having a first portal. The rotating subassembly includes a plurality of rotor elements disposed proximate an outer circumference of a portion of the rotating subassembly. The rotating subassembly is aligned coaxially within the stationary subassembly and is rotatable relative to the stationary subassembly without the aid of support bearings. The first circumferential track is defined by a first rotor track portion on the rotating subassembly and a first stator track portion on the stationary subassembly, and is in communication with a first portal on the casing.

Abstract: A motor positioning structure is constructed by providing a plurality of positioning pins 28, 29 for positioning a circuit board 22 on a case 21 of a circuit main body 3 and also providing receiving holes 35, 36 for receiving the positioning pins 28, 29 in a frame 4 on the side of a stator in a motor main body 2.