Abstract: A mixer/stirrer motor-reducer (e.g. as part of a mixer, stirrer or similar building machine), includes an electric motor (2) and a reducer (3) kinematically connected to the motor via a gear train (4, 6, 8) and with a relevant output shaft (9) intended for moving a mixing tank (10; 110). The motor-reducer (1) is provided with a box-shaped shell (15) made of insulating material. The shell (15) is open laterally, is able to include the casing (12) of the electric motor (2), is closable by a flange (19) and is made of electrically insulating material and is interposed between the motor (2) and the reducer (3).

Abstract: In order in the case of an electric motor, in particular a brushless electric motor, comprising a rotor, a stator, a motor housing receiving the rotor and the stator, a first bearing, disposed on the motor housing, and a second bearing, disposed opposite the first bearing, to allow the bearings to be positioned with the necessary precision when the rotor is being fitted into the motor housing, it is proposed that the motor housing comprises a housing body, which receives the stator, and a flange body, which receives the second bearing and can be mounted on the housing body, and that the flange body, when it is in an axial end position in relation to the rotor axis, is guided on the housing body against a movement transversely to the rotor axis and is fixed in relation to the housing body against a movement in the direction of the rotor axis by means of first positively connecting features, provided on the flange body, and second positively connecting features, provided on the housing body, which features can

Abstract: An electrical actuator has a DC motor which is provided with a rotor having a permanent magnet for forming a plurality of magnetic poles around a periphery thereof and a stator having a plurality of energizing coils and being disposed around a periphery of the rotor to thereby generate a rotary force for the rotor. In mounting this DC motor on a heat-generating member which generates radiant heat, a member for shielding radiant heat from a heat-generating member is disposed between the DC motor and the heat generating member. In this manner, the radiant heat from the heat-generating member is prevented from reaching the DC motor, whereby the problems in the DC motor associated with the radiant heat can be prevented.

Abstract: A permanent-magnet synchronous electric motor with isolated rotor for circulation pumps of heating and/or conditioning systems having: a motor casing; a stator in the motor casing and having associated coils; a housing tightly isolated from the stator for hosting a permanent-magnet rotor; a shaft integral with the rotor; and a bearing supporting the shaft in the housing. The bearing has a bush rotatively engaged by one end of the shaft, a sleeve inserted at one end of the housing and keyed onto the bush, and a cap having a first portion removably inserted into the sleeve and a second portion screwly engaged in a threaded seat of the casing. This design has the major advantage of combining in a unitary part, the sleeve, the supporting function of the bearing and the hydraulic tightness with respect to the electronic components mounted at the bottom of the casing.

Abstract: A fan motor support bracket has a central body portion and first and second end portions upwardly offset from the central body portion. First and second transition portions extend respectively between the first and second end portion and first and second ends of the central body portion. The central body portion has a base and first and second sidewalls extending generally upward from the base. The first sidewall has at least one relief for accommodating a mounting ear of the motor.

Abstract: A method of using a balance clip in a hard disk drive spindle motor for disk pack balance correction provides the balance clip with one end that is offset from the circular shape of the balance clip. The offset end is located opposite the precise bent tab that provides tooling engagement in the balance clip. The offset end of the balance clip is offset at a radius that is less than the radius of the balance clip, or at a lesser radial offset from the circular shape. The edge of the offset end does not make contact with the groove in which the balance clip is seated. This design eliminates scratching between the offset end and motor hub, and reduces friction and particle generation during clip adjustment in the disk pack balancing process.

Abstract: A brushless motor includes a highly reliable thrust-receiving member that simplifies the machining and assembling of parts and prevents deformation of the bearing and leakage of lubricating oil. A stator base has a cylindrical portion serving as a base portion of a bearing housing of the motor. The cylindrical portion is integral with the stator base. A sleeve bearing is pressed in and mounted in a fixed condition on the inner side of the cylindrical portion. A stator core consisting of a conductive wire is mounted in a fixed condition on the outer side of the cylindrical portion, thereby forming a stator. A thrust-receiving portion for the rotary shaft is molded integrally with the stator base at the opening of the cylindrical portion by outsert and resin integral molding, this thrust-receiving portion serving to receive the end of the rotary shaft opposite to the output end thereof.

Abstract: A mounting bracket for the motor within a motor operator for a circuit breaker may be secured within the motor operator's housing a first orientation, thereby permitting it to support a first type of motor. Placing the mounting bracket within the housing in a second orientation permits the mounting bracket to accommodate a second type of motor.

Abstract: An axial tube assembly for a motor includes an axial tube and a sleeve mounted in the axial tube. The axial tube is securely mounted to a casing, and a stator is mounted to the axial tube. The axial tube includes at least one engaging member on an inner periphery thereof. The sleeve includes at least one engaging member engaged with the engaging member of the axial tube. When a bearing is mounted in the sleeve, the sleeve is tightly engaged with the axial tube such that the axial tube and the bearing exert forces to each other to thereby retain the axial tube and the bearing in place.

Abstract: A spindle motor adapted to be loaded with a disk provided with an attracted plate and to rotate the disk is provided which comprises a turn table having a flange portion on a front surface of which the disk is to be mounted and on a back surface of which a rotor yoke is supported, and a cylindrical portion a distal end of which is to be opposed to the attracted plate, the turn table being supported on a housing of a stator through a rotational shaft; an attraction magnet fixed to the distal end of the cylindrical portion of the turn table, and an aligning member an inner periphery of which is engaged with an outer periphery of the cylindrical portion and an outer periphery of which is to be brought into contact with an inner periphery of a center hole of the disk to align the disk; and an urging member interposed between the aligning member and the flange portion of the turn table to urge the aligning member by restoration force, wherein the urging member is comprised of an annular spring material with a plur

Abstract: A support structure (20) is provided for supporting and spacing apart high-voltage electrical conductors (12) in an electric machine. An exemplary support structure (20) includes an improved spacer block (32,33) that is configured to reduce electrical flashover, in the form of creep, between adjacent high voltage conductors, without necessarily increasing the width of the spacer block. The improved spacer block (32,33) includes a main body (33) and a protruding portion (32), which elongates the creepage path (30) between adjacent high-voltage conductors to greater than the width of the spacer block (32,33).

Abstract: An electric motor includes an armature structure 12 having a shaft 14, a lamination stack 11 coupled with the shaft, a commutator 16 coupled with the shaft, and windings 13 carried by the lamination stack and connected to the commutator. Brushes 17 engage the commutator to deliver electric current to the windings. The motor includes a frame structure 18 and permanent magnets 19 carried by the frame structure. At least one assembly is provided including a sleeve bearing 22, an elastomer structure 24 coupled with the sleeve bearing, and a retainer 26. The sleeve bearing is operatively associated with an end of the shaft to support the shaft for rotation. The elastomer structure is clamped between the frame structure and the retainer, with the retainer being engaged with a portion of the frame structure to maintain clamping on the elastomer structure.

Abstract: A pole ring suitable for d.c. motors is provided. The pole ring includes several retaining projections provided at the outer circumference for the secure retainment in a motor housing. The retaining projections have retaining surfaces pointing oppositely to the mounting direction. The retaining surfaces affix the vole ring in the soft material, such as aluminum diecasting or plastic, for example, of the motor housing.

Abstract: A housing of a motor includes a barrel having fins on an outer surface thereof and stands on a bottom of the outer surface for mounting the motor onto a predetermined plane horizontally. A rear lid is mounted at a rear end of the barrel and has an axle hole at a center thereof. A front lid is mounted at a front end of the barrel and ahs an axle hole at a center thereof. And, a front disk that has a diameter greater than that of the barrel is detachably fastened to the front lid. The front disk is provided with fastening holes for mounting the motor onto a predetermined plane vertically.

Abstract: A fan/motor assembly having an integrated brush support and bearing retainer is disclosed. The fan/motor assembly includes a rotatable shaft, a working air fan coupled to the shaft, and a motor bracket and baffle assembly interposed between the working air fan and the motor assembly. The motor bracket and baffle assembly retains a bearing which rotatably receives the shaft and provides integral brush boxes for the motor assembly.

Abstract: A motor, particularly suited for carpet cleaners and other wet vacuuming appliances, includes a motor housing with a stepped bore. The stepped bore is part of a bearing/seal assembly that simultaneously clamps a bearing and compresses a seal member. The assembly maintains the motor's commutator at a substantially fixed axial location relative to the commutator's brushes, regardless of the extent to which the seal is compressed and regardless of any subsequent creep of the seal.

Abstract: A rotor assembly for an electric motor having a rotor shaft and at least one permanent magnet arranged on the rotor shaft. The rotor shaft with the permanent magnet is accommodated in a sleeve the rotor shaft being freely rotatable within the sleeve. The sleeve is closed off by a flange at a first end face. An inner-rotor electric motor having a stator and a rotor assembly of the type described above, with the stator being inserted over the sleeve of the rotor assembly.

Abstract: A fastening structure for securing a stator of a motor includes a sleeve with a cut portion formed thereon and a fastener. The fastener is composed of a position section and an engaging section, wherein the engaging section engages with the cut portion and the position section presses on the top surfaces of the coil bobbin of the stator.

Abstract: A support hole, screw holes, and eleven orientating holes are formed in a plate. The orientating holes are each positioned asymmetric to any other thereof about a center of the plate.

Abstract: The invention relates to the decoupling device for an actuator, which has a number of decoupling elements. A securing element is disposed between these decoupling elements. The actuator is fastened to the securing element. The decoupling elements rest against radial support shoulders and axial support shoulders of the securing element and a housing. These are embodied so that radial, axial, and tangential oscillations of the actuator are decoupled from the housing.

Abstract: An improved electric motor cooling construction where the motor stator is contained within the motor housing. The motor covers and motor housing are designed to provide direct increased airflow to the motor stator, and coil windings to provide better airflow through the motor resulting in improved cooling.

Abstract: A stack assembly is disclosed of the type used in linear brushless DC motors, the stack assembly having a base portion, a plurality of teeth extending from the base portion and about which the windings can be positioned, and in which the plurality of teeth are spaced apart from each other so as to define slot openings at ends of and between adjacent teeth, and magnetic material shaped and positionable to enclose one or more of the slot openings between adjacent teeth. Also disclosed is a mounting bracket positionable along the back iron of the stack assembly and shaped so that the ends of the mounting bracket engage with the ends of the stack assembly.

Abstract: A capstan-motor assembly for a magnetic recording/reading apparatus comprises a bearing holder fixed to a motor frame on a main deck for rotatably supporting a shaft; a stator core coupled to the bearing holder, and on which a coil is wound; a rotor frame coupled to the shaft so as to be rotated together with the shaft, and in which a magnet corresponding to the coil is supported; and a PCB substrate disposed between the stator core and the motor frame, and electrically connected with the coil. The bearing holder has a soldering boss soldered to the PCB substrate and/or the stator core so as to protrude to outer surfaces thereof, thereby reducing components needed to affix PCB substrate and stator core to the bearing holder.

Abstract: A stepping motor comprises a rotor assembly and a stator assembly. The stator assembly includes first and second stator units arranged horizontally on a same plane. Each stator unit is composed of: upper and lower stator yokes, which are shaped substantially semi-annular, arranged squarely opposite to each other in parallel, each have a plurality of pole teeth formed along its inner circumference so as to surround the rotor assembly, and which are coupled to each other with their respective pole teeth opposing each other so as to intermesh; a coil for exciting, wound rectangularly, and having its axis located outside the rotor assembly so as to be sandwiched between the upper and lower stator yokes; and a spacer shaped substantially in rectangular parallelepiped, oriented parallel to the axial direction of the rotor assembly, and inserted through the coil.

Abstract: A bracket assembly for a dynamoelectric machine includes a base plate and a bracket support assembly. The bracket support assembly includes a first end plate, a second end plate and a support member connected to at least one support plate. The bracket support assembly reinforces the bracket assembly and provides a configuration effectively achieving a desired natural frequency which is unlikely to be excited in use.

Abstract: The invention relates to a spindle motor comprising a casing part with a horizontal flange portion and a vertically oriented receiving sleeve for receiving and fastening a corresponding bearing configuration. According to the invention a bottom portion, integrally connected with the horizontal flange portion, is provided, which unilaterally closes the receiving sleeve. Consequently, the mounting of a separate cover for closing the receiving sleeve can be omitted.

Abstract: An electric power steering system is provided, which comprises a steering assist electric motor, and a reduction gear mechanism for reducing a rotation speed of a rotatable shaft of the electric motor. The reduction gear mechanism comprises a worm shaft driven by the rotatable shaft, and a worm wheel driven by the warm shaft. The electric power steering system further comprises a joint for coupling the rotatable shaft to the worm shaft for transmission of a driving force. Longitudinally biasing means is provided in association with the joint for longitudinally biasing the worm shaft.

Abstract: In order to design an electric motor with a housing, with a rotor and with a stator, each stator unit including pole shoes, formed as claw poles, as well as a coil positioned following the rotor in the direction of the rotor axis, by means of which the pole shoes can be magnetized, at low cost, it is proposed that the stator unit has two pole shoe elements of which a first pole shoe element has a first pole shoe carrier as well as first pole shoes formed integrally onto this carrier and of which a second pole shoe element has a second pole shoe carrier as well as second pole shoes formed integrally onto this carrier, and that the first pole shoe carrier carries a connecting element which establishes a magnetic circuit between the pole shoe carriers and which is fixedly connected to at least the second pole shoe carrier.

Abstract: In a flexible disk drive having a main frame in which a flexible disk is inserted and a direct-drive motor having a stator disposed on a main surface of the main frame and a rotor including a permanent magnet, a gap between the main surface of the main frame and the permanent magnet is set at a distance so that the rotor does not fall due to gravity by attracting the rotor to the main frame by the magnetic attractive force of the permanent magnet even if the rotor is turned upside down to the stator.

Abstract: An axial tube assembly for a motor includes an axial tube and a sleeve mounted in the axial tube. The axial tube is securely mounted to a casing, and a stator is mounted to the axial tube. When a bearing is mounted in the sleeve, the sleeve is tightly engaged with the axial tube such that the axial tube and the bearing exert forces to each other to thereby retain the axial tube and the bearing in place.

Abstract: The invention relates to a relay supporting unit for an electric motor to arrange a number of relays at the end of the electric motor, at which winding connections and signal lines of the electric motor are provided. The relays are used to connect and interrupt the power supply to the motor windings. The relay supporting unit according to the invention features a supporting component which is designed in such a way that it extends over the end of the electric motor and has at least one, preferably several, chambers to accommodate and position the relays. A connecting frame is integrated into the supporting component to electrically connect the winding connections and the relays. Furthermore, a sensor PCB is also preferably integrated to which the signal lines of the electric motor can be connected.

Abstract: An electric drive unit provides a simple and economical electrical connection of an electric motor and an electronic module. The commutator of the electric motor, a brush rocker ring arranged on the commutator, and the drive shaft of the electric motor as well as the carrier body of the electronic module are inserted into a transmission housing. In the transmission housing, the carrier body of the electronic module is positioned so that contact elements provided on the brush rocker ring engage into contact points provided on the carrier body of the electronic module. The electric drive unit can be used for window lifter drives.

Abstract: A bearing having a high thrust rigidity, an excellent vibration resistance, and a simple structure, as well as a spindle motor using such a bearing are provided. A groove or grooves 7 are disposed to either one of a shaft 2 and a sleeve 3 which form a radial bearing portion, to thereby exert thrust force in a direction which brings two mutually facing members at a thrust bearing portion closer to each other. The groove 7 is inclined with respect to an axis, and the inclination exerts, between the shaft 2 and the sleeve 3, thrust force in a thrust direction. The groove 7 may be herringbone-shaped or other type of groove which can generates such thrust force. It is also possible to further enhance the thrust force utilizing a negative pressure, with an upstream side of the radial bearing portion for introducing fluid such as air shielded from outside air.

Abstract: An electric motor has a stator and a rotor. The rotor is supported by a sintered bearing associated with the stator. The bearing 10 co-operates with an abutment 18 on the rotor to form a thrust interface. The abutment has a planar surface 19 with an outer diameter A. The bearing 10 has a cylindrical radially outer surface, a central bore 13 with a diameter B and two end faces 12. One end face has an axially inclined thrust surface 16 having an inner edge with a diameter C and an outer edge with a diameter D wherein C<A<D and B?C?1.5B.

Abstract: A throttle device with a throttle body and first and second supports supporting a motor for controlling the opening position of the throttle of a valve. The first and second supports support the motor from both sides of the motor in the longitudinal direction. At least one of the first and second supports may also elastically support the motor, and may be a metallic leaf spring disposed within the throttle body.

Abstract: A miniature motor includes a closed-bottomed cylindrical motor casing having a cylindrical bearing support portion projecting from a central portion of the bottom of the motor casing, a motor-casing-side bearing accommodated in the bearing support portion, a casing cover fitted to an open end portion of the motor casing, a casing-cover-side bearing accommodated in a central portion of the casing cover, and a rotor rotatably supported by means of the motor-casing-side bearing and the casing-cover-side bearing. The end face of the motor-casing-side bearing is concentrically polished at at least a portion which, when the rotor is urged toward the motor casing, abuts a washer provided on a shaft of the rotor. The above structure reduces sliding loss on the end face of an oil-impregnated bearing which receives a thrust load of the rotor generated due to rotation of the motor.

Abstract: A drive device includes an electric drive motor, a housing, at least one shaft driven by the drive motor, compensation elements enabling the end play of the shaft to be adjusted or compensated while the shaft is being mounted, and fixing elements which are used to fix the shaft after the end play has been adjusted or compensated. The compensation elements include a spring element which is arranged inside the housing and which axially actuates the shaft. The fixing elements are not accessible from the outer side of the housing.

Abstract: A drive assembly in a motorized door opener includes a motor that is mounted on a mounting structure. At least one vibration isolator is provided between the motor and the mounting structure. The vibration isolator includes a first mounting fastener configured to be mounted to a mounting fastener on the motor, a second mounting fastener configured to be mounted to the mounting structure to mount the motor on the mounting structure, and an elastomeric material between the first and second mounting fasteners. The elastomeric material lies between the first and second mounting fasteners so that the isolator's two mounting fasteners are not in physical contact.

Abstract: The present invention provides a metal bushing motor to fix a fan. The fan includes a frame body, a circuit board disposed on the frame body, a stator assembly mounted on the frame body, and a rotor assembly set on the outside of the stator assembly. A loading base is disposed in the center of the frame body and a bearing is disposed on the base. The bearing on the loading base is composed of a connection part and a hollow tube. At least one joint part is disposed on outer circumference of the connection part. A lower bobbin is mounted on the button of the stator assembly. A hole is in the center of the lower bobbin and at least one obstructer corresponding to the joint part mounted on the bearing is disposed on inner circumference of the hole. By the lower bobbin, the stator assembly is firmly mounted on the bearing of the base, rather than get loose or fall off to interrupt the rotation operation of the fan while being forced or operated for a certain period.

Abstract: A device and a process for mounting the rotor of a hermetic compressor, said device comprising a pulling rod (40), which is loosely and coaxially provided through the rotor (30) of the electric motor of the compressor, in order to have a first end coupled to an end of the crankshaft (10) located adjacent to an end face of the rotor (30), and a second opposite end to be seated against an opposite end face of the rotor (30) and to which a driving means (DM) is engaged to move the pulling rod (40), in order to provoke a relative axial displacement of the crankshaft (10), sufficient to fit, by mechanical interference, the extension (11) of the crankshaft (10) inside the rotor (30).

Abstract: An alternator for a vehicle has a housing that is formed with attachment holes in external portions of the housing, through which a carrier jig is passed, to support the alternator when it is being mounted in the vehicle. By forming a plurality of attachment holes oriented along a common axis, at respectively different positions on the exterior of the alternator housing, it can be ensured that the carrier jig reliably holds the alternator in a required attitude as it is moved into position for mounting, e.g., to be attached to a sloping side of the engine of the vehicle.

Abstract: The engine has a rotor rotationally mounted about a rotational axis and is provided with a superconductive winding arranged in a winding support. In order to fix the winding support inside an external rotor housing, a rigid connecting device having a hollow cylindrical connecting element made of fiber reinforced plastic is provided on the torque transmitting side. The connecting element is configured as a single piece and consist of end parts located on the front face and a central part located between the latter, wherein the end parts are corrugated in peripheral direction and are non-corrugated in the central part. The end parts of the connecting element are connected to and engine with one another in a non-positive fit manner in groovelike recesses of flangelike end pieces made of metal.

Abstract: By applying a force to cancel a reaction acting on a stator due to driving of a mover to the stator by an electromagnetic interaction generated between reaction canceling magnetic pole units and armature coils, and by having a magnetic pole unit, which constitutes the mover, composed by combining magnets having such magnetization-directions that their magnetic flux are toward the stator and magnets having magnetization-directions crossing the aforementioned magnetization-directions without using yoke material for the mover to be light weight, the vibration of the stator can be prevented even upon the high speed drive of the mover. Therefore, a highly precise positioning control can be performed while moving a placed sample at high speed.

Abstract: An improved armature construction in which a coil winding wiring board and cooperating insulator around which the coils are wound at least in part wherein the insulator and wiring board are interconnected by an attachment arrangement that automatically positions and retained components in the desired circumferential, axial and radial positions.

Abstract: An independent and modular apparatus is disclosed for extending the operational capacity of a servo motor. The apparatus includes a frame member having a servo motor and a rotatable shaft mounted therein. The output shaft of the servo motor and the rotatable shaft are displace from one another. Means are incorporated for translating rotation motion from the output shaft to the rotatable shaft so as to enable a torque or rotational capacity for the rotatable shaft that is greater than that of the servo output shaft.

Abstract: An external rotor brush motor includes a permanent magnet mounted on a fixed shaft to form an internal stator, a front wheel and a rear wheel mounted on the shaft at two sides, the front wheel having an integrated belt pulley for the mounting of a transmission belt, a commutator provided at the rear wheel for synchronous rotation, a shell connected between the front wheel and the rear wheel for synchronous rotation; an iron core and a coil mounted inside the shell and forming an external rotor, a cover affixed to the shaft and covered over the commutator; and two electric brushes fixedly mounted inside the cover and respectively pressed on the commutator.

Abstract: A stator device which prevents the formation of varnish accumulations on jumper wires, thereby preventing jumper wire breakage due to temperature variations. A gap is created between the jumper wire and the stud located on the stator body. When varnish is applied to the stud and the jumper wires, excess varnish flows through the gap and pools underneath. Moreover, when there is a significant accumulation of varnish in the gap, the varnish will flow off from the edge of the stator body.

Abstract: An electronically commutated internal rotor motor (20) has an outer stator (28) and a permanent magnet rotor (36) arranged rotatably therein by means of a shaft (40) supported at its drive end (42) by a rotary bearing (54) located in the A-side bell (26) and supported at its other end (44) by a rotary bearing (72) located in the B-side bell (66). The rotary bearing (54) in the A-side bell is preferably so configured that it permits a small radial movement (56) of the drive end (42) relative to this bell (26). The rotary bearing (72) in the B-side bell (66) has its outer race (72) tensioned against a shoulder (90, 94). Its inner race (74) is tensioned between a shoulder (78) of the shaft (40) and a shaped part of non-ferromagnetic material. This shaped part is pressed by a countersunk screw (82), screwed into a threaded bore (84) of the other shaft end (44), against the inner race.

Abstract: An axial tube assembly of a motor includes an axial tube around which a stator assembly is mounted, an engaging member, and a sleeve in which a bearing is mounted. The engaging member includes a base and a plurality of resilient legs projecting from the base. Each resilient leg has a hook on a distal end thereof. The base of the engaging member is engaged with and thus seals a bottom end of an axial hole of the axial tube. The sleeve is mounted in the engaging member and has a base portion. The hook of each resilient leg is pressed outward to thereby retain the stator assembly in place when the sleeve and the engaging member are received in the axial tube, with the resilient legs of the engaging member together holding the sleeve to thereby allow tight engagement between the sleeve and the bearing.

Abstract: The present invention prevents peak noise caused by a resonance frequency, and reduces an overall noise of the system by supporting core teeth of a stator of a BLDC motor with a supporting member.