Abstract: A vehicle window lift control system includes a window lift motor, a motor drive/control module, an inverter, a rotor position sensing unit, and an anti-pinch module. The window lift motor is a brushless direct current motor. The anti-pinch module detennines whether or not the vehicle window is in an anti-pinch area based on position feedback signals generated by a rotor position sensing unit that is inherently included in the brushless direct current motor. When the vehicle window is in the anti-pinch area, an obstacle judgment unit is initiated. When there is an obstacle, an anti-pinch instruction unit sends an anti-pinch instruction to the motor drive/control module, and the motor drive/control module drives the inverter according to the anti-pinch instruction to make the motor rotate reversely. The present vehicle window lift control system has the advantages of small size, low failure rate and low cost.

Abstract: An end cap assembly for an electric motor has a brush assembly, a circuit board, an inductor and a grounded metal element. The brush assembly has a plurality of brushes. The circuit board is fixed relative to the brush assembly. The inductor is electrically connected to the circuit board. The grounded metal element is positioned between the brushes and the inductor to absorb high frequency electromagnetic radiation transmitted from the brushes to the inductor.

Abstract: A blower includes a housing, and an impeller and a motor received in the housing. The motor drives the impeller to rotate. The motor includes a stator and a rotor. The stator includes a stator core and windings wound around the stator core. The stator core includes a yoke and teeth extending from the yoke. A distal end of each of the teeth forms a tooth tip, with a slot opening formed between each two adjacent tooth tips. The rotor includes a permanent magnet forming a plurality of magnetic poles. The stator and the rotor define an air gap therebetween. A circumferential width of the slot opening is equal to or less than two times of a radial width of the air gap.

Abstract: The present invention provides a single phase permanent magnet motor including a stator core and a permanent magnet rotor. The stator core includes an end portion and two arm portions extending from the end portion. Each arm portion includes a connecting arm connected to the end portion and a pole claw formed at a distal end of the connecting arm. The two pole claws defines a receiving space. The rotor is rotatably disposed in the receiving space of the stator core. The rotor includes a rotor core made of a magnetic material and at least one permanent magnet attached to the rotor core.

Abstract: A liquid pump includes a housing, a motor fixed in the housing, and an impeller driven by the motor. The motor includes a stator and a rotor rotatable relative to the stator. The impeller is connected to a rotor of the motor. The housing includes a guide wall surrounding the stator, and a guide face extending outwardly from an outer surface of the guide wall to guide a liquid flowing to the guide wall to flow in a direction away from the stator, thus ensuring the electrical safety of the liquid pump.

Abstract: A motor driving circuit, the motor itself, and a motor driving method are disclosed. The circuit includes a controllable bidirectional alternating current (AC) switch and a processing unit, a voltage polarity of the AC power source and zero voltage crossing point of an AC power source being detected, together with a magnetic pole position of a permanent-magnet rotor, to govern the operation of the AC switch. When the controllable bidirectional AC switch is to be switched on, a trigger pulse is output after a delay time after the zero voltage crossing point, such that a phase difference between a back electromotive force and current flowing through the stator winding is decreased.

Abstract: A circuit includes a first operating component, a second operating component and a starting time control circuit. The starting voltage of the first operating component is different from that of the second operating component, and the starting time control circuit is configured to regulate a starting time of the first operating component to be synchronous with that of the second operating component.

Abstract: A rotor, motor, pump and a cleaning apparatus are provided. The rotor includes a shaft and two magnets fixed to the rotary shaft. Each magnet comprises a radial outer surface, a radial inner surface, and two connecting surfaces that connect the radial outer surface and the radial inner surface at opposite ends of the magnet. The radial outer surface has an arc section. The radial inner surfaces of the two magnets cooperatively define an inner bore for the shaft to pass therethrough. A ratio of a pole arc angle of each magnet to a 180-degree angle is in the range of 0.75 to 0.95.

Abstract: A fluid driving device, a motor assembly and a friction clutch thereof are disclosed. The friction clutch includes: a fixing member fixed on a rotary shaft; a connecting member slidable disposed on the rotary shaft, wherein when the rotary shaft starts rotating, an axial distance between the connecting member and the fixing member changes such that a friction force between the fixing member and the connecting member increases until the connecting member rotates synchronously with the fixing member; a loading member slidable disposed on the rotary shaft, the loading member and the connecting member being circumferentially positioned; and a restoring member configured to reduce an amount of change of the axial distance between the fixing member and the connecting member when the rotary shaft stops rotating.

Abstract: A single-phase outer-rotor motor and a stator thereof are provided. The stator includes a stator core having a yoke and a number of teeth. Each tooth includes a tooth body and a tooth tip. A winding slot is formed between each two adjacent tooth bodies. A slot opening is formed between each two adjacent tooth tips. The tooth tip protrudes beyond the tooth body. Inner surfaces of at least part of the tooth tips facing the stator are formed with cutting grooves such that a portion of the tooth tip outside the cutting groove is capable of being tilted outwardly to enlarge the slot opening and deformed inwardly to narrow the slot opening.

Abstract: An electric motor includes a stator and a rotor. One of the stator and the rotor includes a magnetic core, preferably an iron core. A reactive metal or a mixture or reactive metals is fixed to the magnetic core. The or each reactive metal has a reactivity greater than the reactivity of the metal of the magnetic core. A rotor and a stator is also provided. By fixing the reactive metal or metal mixture to the magnetic core of the motor, rotor or stator, oxidation and corrosion of the core can be avoided or reduced.

Abstract: A single-phase outer-rotor motor includes a stator and a rotor surrounding the stator. The stator includes a stator core and windings wound around the stator core. The stator core includes a yoke and a plurality of teeth. Each of the teeth forms a tooth tip at a distal end thereof. A slot opening is formed between each two adjacent tooth tips. The rotor includes a housing and a permanent magnet affixed to an inside of the housing. The permanent magnet forms a closed ring in a circumferential direction. The permanent magnet forms a plurality of magnetic poles along the circumferential direction. An outer surface of the stator and an inner surface of the permanent magnet define there between a symmetrical uneven gap. A width of the slot opening in the circumferential direction is less than or equal to five times of a minimum width of the gap.

Abstract: An actuator for a medical device includes a housing, a driving unit mounted in the housing, a first moving unit slidably mounted in the housing and movable by the driving unit. The first moving unit includes a movable first car, an spring with two ends thereof abutting the housing and first car, respectively, and a lock formed between the driving unit and first car. The lock includes a first snap and a first protrusion detachably engagable with the first snap. One of the first snap and first protrusion is formed on the first car, and the other is formed on the driving unit. When the first protrusion disengages from the first snap, the spring moves the first car relative to the housing.

Abstract: The present invention provides a stator core comprising an end portion and a pole arm extending from the end portion. The pole arm includes two spaced connecting arms and two pole claws respectively formed at distal ends of the connecting arms. The two pole claws define a space for receiving a rotor therein. The pole claws surround the space and form an arc pole surface. The arc pole surface forms a discontinuity opening along a circumferential direction. The discontinuity opening faces a spacing between the connecting arms and has a width changed along an axial direction.

Abstract: A motor driving device for brushless direct current motors and an application apparatus thereof are provided. The motor driving device includes an inverter, a plurality of motor branches, and a microprocessor. The inverter includes a plurality of semiconductor switches to output an alternating current power via a first output terminal and a second output terminal. The plurality of motor branches are connected in parallel between the first output terminal and the second output terminal of the inverter, and each of the plurality of motor branches comprising a motor and a controllable bidirectional alternating current switch connected in series. The microprocessor controls a conduction manner of the semiconductor switches in the inverter, and whether to turn of the controllable bidirectional alternating current switch in each of the plurality of motor branches.

Abstract: A motor includes a stator and a rotor. The stator includes a stator core and a bobbin. The bobbin includes upper and lower bobbins covering the stator core from two axial ends. The upper and lower bobbins each include an end face and a side portion. The two end faces overlap two axial ends of the stator core. The side portions are aslant relative to the axial direction of the stator core. Ends of the upper and lower bobbins connected to the end faces form tight fit with the stator core, and the other ends away from the end faces form loose fit with the stator core.

Abstract: A fan and a motor thereof are provided. The motor includes a motor drive device. The motor drive device includes a printed circuit board. A control management unit and a voltage converter are arranged on the printed circuit board, the control management unit classifies target rotation speed signals provided by an ECU into multiple rotation speed intervals, with each rotation speed interval corresponding to a fixed duty ratio. The control management unit receives a target rotation speed signal transmitted from the ECU in a real-time manner, and outputs a pulse width modulation signal having a duty ratio corresponding to the rotation speed interval to which the target rotation speed signal transmitted from the ECU belongs.

Abstract: In a method for the manufacture of actuators comprising an electric motor for driving an output shaft (10), a sensor device for generating a signal that is a function of the angle at which the output shaft is rotated, and a support surface (30a) with mounting points for mounting an actuator, a mechanical adjustment of at least one actuator component is carried out, which takes place depending on the deviation between an actual value and a setpoint such that the output shaft has an output end (40b), the angular position of which is adjusted to the setpoint.

Abstract: A low-voltage direct current motor has a stator and a rotor rotatable relative to the stator. The rotor includes a rotary shaft, a rotor core fixed to the shaft, a commutator fixed to the shaft adjacent to the rotor core, and rotor windings wound about poles of the rotor core and electrically connected to the commutator. The stator includes a round housing, a permanent magnet mounted to an inner surface of the housing, and brushes disposed in sliding contact with the commutator. An input voltage of the motor is in the range of 7 to 36V, and a ratio of an outer diameter of the rotor core to an outer diameter of the housing is in the range of 67% to 75%.

Abstract: A drive circuit for an electric motor having a wound stator and a permanent magnet rotor, includes a controllable bidirectional AC switch connected in series with a stator winding between two terminals for connecting to an AC power supply. First and second position sensors detect the position of magnetic poles of the rotor. A voltage regulating circuit is connected between the two terminals and the controllable bidirectional AC switch and configured to supply power to the first sensor during the positive cycle and to the second position sensor during the negative cycle of the AC power supply such that the controllable bidirectional AC switch is switched between a conductive state and a non-conductive state in a preset manner, thus enabling the stator to rotate the rotor in only one predetermined direction during start-up.