145results about "DC commutator" patented technology

The disclosure relates to a four-phase motor and generator device with increased efficiency for generating electrical energy. The device features a stator wall with eight stator slots and four pole groups, and an armature rotatable within the stator wall. The eight stator slots are divided into four pole groups of opposing stator slots; the two opposing stator slots include an N (North) stator slot and an S (South) stator slot. N and S stator slots are alternatively activated in response to the rotation of the armature. The activation of the armature pole groups results in armatures rotating the magnetic field within the stator wall, and only four of the eight poles are actively coupled in any given configuration. The disclosure also includes a method of operating the motor for generating electrical energy with increased efficiency and in an environmentally friendly manner compared to conventional motors.

A rotor core of a rotary electric machine according to the present application is capable of adjusting the flow of magnetic flux at the tip of a tooth. The rotor core of the rotary electric machine is provided with a slot portion in which a coil is wound, and a tooth portion that forms a space in which the coil is wound in the slot portion, a boundary portion of the inner peripheral side of the tooth portion with the slot portion being formed by a flat portion and a curved portion, the flat portion being formed in a straight line perpendicular to the radial direction, the curved portion being formed in a curved line continuous with the flat portion via a corner provided at the boundary with the flat portion, the curved portion being located at a position closer to the tip than the flat portion in the circumferential direction of the tooth portion.

DC motor (1) for operation in an external magnetic field comprising: a rotor (2) which is rotatable about an axis of rotation (5) and has at least two windings (10, 11), at least four continuous rotary transformers (3), two rotary transformers (3) being assigned to each of the windings (10, 11) and being designed to supply the respectively assigned winding (10, 11) with direct current, an angle sensor (4) designed to determine the angular position of the rotor (2), and a control unit (15) designed to control the current supply to at least one of the windings (10, 11) as a function of the angular position of the rotor (2), wherein the motor (1) is aligned with an external magnetic field during operation such that the axis of rotation (5) extends transversely to the external magnetic field.

The utility model relates to a two-antipode magnetic steel and one-pair carbon brush motor for a short-time working mode, and solves the technical problems of low production efficiency and high cost caused by the structure in the prior art. The motor comprises a casing, two carbon brushes, four magnetic steels and a rotor, wherein the two carbon brushes and the four magnetic steels are arranged on the inner wall of the casing; the included angle between the two carbon brushes is 90 degrees; the rotor is provided with an armature with a six-groove structure and six commutators, or is provided with a 12 * N groove structure and 12 * N sheets; six grooves of the armature and six commutators form a group; the armature part corresponding to each groove is marked as a-f, and the rising piece between the armature d and the armature e is taken as a starting point and marked as 1-6; the winding structure is as follows: a lead is led in from a riser 3 # and a riser 6 #, is wound along an armature d and an armature a and then is led out along a riser 1 #; a lead is led in along the riser 2 # and the riser 5 #, is wound along the armature c and the armature f and then is led out along the riser 6 #; a wire is led in along the rising piece 1 # and the rising piece 4 #, is wound along the armature b and the armature e, and then is led out along the rising piece 5 #.

[Integrated electrically insulated bearing device, particularly for electric motors or machines] The device includes a bearing 10 having a first ring 12 and a second ring 14. The device includes an insulating sleeve 26 mounted on the second ring 14 and having a bushing 28 and an insulating lining 30. The insulating lining is fixed to the second ring 14 and to at least one of the outer and inner surfaces of the bushing 28. The bushing 28 also includes first and second front faces 28c, 28d defining the axial length of said bushing.A first connecting chamfer 28e links the first front face 28c of the socket to the outer surface, and is provided with a first concave radius connecting to the outer surface by forming a sharp edge, a second concave radius connecting to the first front face 28c by forming another sharp edge, and a frustoconical surface extending between the first and second concave radii. Reference: Figure 1.

The present invention relates to a linkage system for an output shaft (21) of an electric machine with a transmission system, the linkage system being formed by a linkage element (3) mounted on the output shaft (21), the output shaft (21) having knurling (22). Abstract figure: Figure 1

To provide a technique capable of holding energization in an electric motor with a simple configuration even after a manual switch for a reciprocating tool is turned off.SOLUTION: A reciprocating tool includes a reciprocating member, an electric motor, a transmission device, a drive circuit, a first manual switch, a switch element and a control circuit. A first contact point of the first manual switch is connected to a power supply, and a second contact point of the first manual switch is connected to the drive circuit. The first manual switch in its on state connects the first contact point to the second contact point. The switch element (i) is turned on when it receives an electric signal, and (ii) establishes electrical continuity between the first contact point and the second contact point in its on state. In response to at least the first manual switch being turned on, the control circuit continues to output the electric signal to the switch element until the drive of the electric motor is stopped.SELECTED DRAWING: Figure 6

The utility model provides a micromotor, which comprises a shell, a group of carbon brushes, an armature, a commutator, a permanent magnet and an output shaft, one end of the commutator is electrically connected to the armature, and the other end of the commutator is fixedly connected to the output shaft; the two sides of the commutator are respectively and oppositely provided with a carbon brush. The armature is wrapped by the shell; a group of opposite permanent magnets are arranged on the inner wall of the shell; a preset distance is arranged between the opposite permanent magnets; the output shaft penetrates out of the shell and extends out by a preset distance. The service life is effectively prolonged, and the operation noise is reduced through the arrangement of the narrow groove, so that the service life of the micromotor is long.

The utility model discloses a brush stepping motor, and relates to the technical field of motors. The two ends of the motor rotor are matched with the ball bearings respectively, the motor rotor is arranged in the motor shell, the commutator ring is installed on the motor rotor, commutator contacts are further installed in the motor shell, the commutator contacts are matched with the commutator ring, and a PCB with a Hall sensor is fixed to the probe shell through epoxy resin adhesive and first self-tapping screws. The positioning plunger is sleeved with a plunger spring, the positioning plunger is fixed in the execution cover through a second self-tapping screw, the terminal cover, the electric brush spring and the electric brush are all inserted into the execution cover, the sealing element is fixed on the bearing cover through a sealing element fixer, and the bearing cover is internally matched with a ball bearing through a spring washer. The interior of the groove of the motor shell is coated with silicone sealant, and the hot pile is heated into the motor shell. The device is reasonable in structural design, convenient and reliable to install, capable of achieving accurate control, high in operation efficiency and high in practicability.

The utility model discloses a 48V DC brush motor comprising a housing, a stator assembly, a rotor assembly, a commutator and a carbon brush. The number of the stator assembly is an even number of stator magnetic shoes; the rotor assembly comprises a rotor shaft and a rotor iron core fixed on the periphery of the rotor shaft, wire slots are formed on the periphery of the rotor iron core at intervals, the number of the wire slots is an odd number, winding coils are filled in the wire slots clockwise, and the span of the winding coils is 3; the commutator is fixed on the periphery of the rotor shaft, the carbon brush comprises a first carbon brush and a second carbon brush, and the included angle between the first carbon brush and the second carbon brush is 90 degrees. According to the utility model, the structural arrangement of the wire ducts, the magnetic poles, the carbon brushes and the windings is optimized, and the DC brush motor which is stable in commutation and long in service life is provided.

A DC electric motor for driving a tailgate of a vehicle is provided, the DC electric motor including a rotor and a stator, the rotor being rotatably supported about an axis of rotation, at least one of the rotor and the stator having a magnetic asymmetry for generating an asymmetric magnetic interaction between the rotor and the stator, wherein the rotor and the stator are configured to assume first positions and second positions relative to each other, wherein a higher holding torque acts between the rotor and the stator in one of the first positions than in one of the second positions due to the asymmetry.

To change properties of a motor without lowering the degree of freedom in designing the motor, a coreless motor (100) includes a rotating shaft (20); a coil (60) that is formed by winding a conductive wire (61) into a cylindrical shape, the coil being configured to rotate together with the rotating shaft (20); and a cylindrical magnet (30) that is disposed inside or outside the cylindrical coil (60). An angle interval (β) about an axis (center C) of the rotating shaft (20) between conductive wire portions (as one example, between two parallel portions (62), (62)) in a single winding in the coil (60) is set to be different from an angle interval (a) about the axis (center C) of the rotating shaft (20) between magnetic poles (30N, 30S) of the magnet (30).

The invention is suitable for the technical field of miniature NGW speed reducing motor structures, and discloses a miniature NGW multi-stage planetary gear speed reducing motor which comprises a motor and a miniature NGW multi-stage planetary speed reducer installed at one end of the motor. The planetary reducer comprises a shell, a planetary reducing mechanism arranged in the shell and an output shaft, one end of the output shaft extends out of the shell, the other end of the output shaft penetrates through the shell and is connected with one end of the planetary reducing mechanism, a motor is provided with a driving shaft, one end of the driving shaft penetrates through the shell and is connected with the other end of the planetary reducing mechanism, and the length-diameter ratio t of the motor meets the relation that t is larger than or equal to 1 and smaller than or equal to 2; the ratio y of the diameter of the speed reduction motor to the diameter of the speed reduction box meets the relation that y is larger than 0.95 and smaller than 1.05, the transmission ratio i of the planetary speed reduction mechanism meets the relation that i is larger than or equal to 40 and smaller than or equal to 360, and the ratio k of the axial length of the shell to the outer diameter of the shell meets the relation that k is larger than 0 and smaller than 1. The planetary gear reduction motor provided by the invention not only meets the design requirement of large transmission ratio of the planetary gear reduction motor, but also reduces the length-diameter ratio of the planetary reducer.

In order to improve motor characteristics, this coreless motor (100) is provided with: a rotary shaft (20); a coil (60) which is formed in a cylindrical shape by winding a conductor (61) and rotates integrally with the rotary shaft (20); and a cylindrical magnet (30) which is disposed inside the cylindrical shape of the coil (60). One winding of the coil (60) is formed in a hexagonal shape having parallel sections (62) which are parallel to an axial direction (center C direction) of the rotary shaft (20) and two oblique side portions (63, 64) which are inclined with respect to a surface orthogonal to the center C direction and connected to both ends of the parallel sections (62), wherein the oblique side portions (63, 64) are formed in a curved shape protruding from the inner side toward the outer side of the one winding of the coil (60), and a tangential angle (θ) between a tangential line of the oblique side portion (63) drawn from a vertex where two adjoining oblique side portions (63, 63) in the one winding of the coil (60) are connected together at one end and a surface orthogonal to the rotary shaft (20) is set in a range of 15 [degrees] to 50 [degrees].

This invention provides a motor that suppresses corrosion that occurs at the connection point between the terminal electrodes and the aluminum rotor coil. [Solution] The motor 10 of the present disclosure is a motor comprising a stator and a wound-field type rotor, the rotor comprising a rotor core, an aluminum rotor coil wound around the rotor core, an aluminum terminal electrode provided at the end of the rotor coil, and a rotor shaft attached to the rotor core and rotating together with the rotor core, the aluminum terminal electrode being attached to the rotor shaft and configured to receive power from an electrode connected to an external power source.

The invention relates to a method for operating an electric motor for driving a vehicle, wherein in order to separately excite a rotor of the electric motor, said rotor being arranged on a rotor shaft, at least one first and second contact brush (4, 6) are pressed against paired contact rings (8, 10) of the rotor shaft in a quality-based manner such that a sufficient contact of the contact rings (8, 10) is produced by the contact brushes (4, 6) for a given excitation current while applying as little pressure as possible. The invention additionally relates to a computer program, to a computer program product, to a system, and to a vehicle.

The present invention relates to a direct current electric motor (1) with sliding contacts comprising a motor body (10), a drive shaft (15), a rotor (20), fixed to the drive shaft (15), a stator (30) coaxial to said drive shaft (15), a rotating slip ring (18), a pair of sliding electric contacts (40) cooperating with the slip ring (18), wherein the stator (30) comprises two pairs of poles each with two respective north (N1, N2) and south (S1, S2) magnetic poles and wherein with respect to two first (P1) and second (P2) planes orthogonal to each other, where the straight line of intersection of said planes coincides with the rotation axis (R) of the rotor (15), which define four quadrants (Q1, Q2, Q3, Q4) of the stator (30) of equal angular extension, said magnetic poles are each arranged on one of the four quadrants.

In a winding field type rotating electric machine, a winding field rotor (60) includes a rotor core (61) having main pole portions (62) provided for each magnetic pole arranged in a circumferential direction and protruding in a radial direction, and a field winding (70) wound around the main pole portions. The field winding has coil bodies (90) formed by winding a conductor wire in multiple layers in the radial direction for each of the main pole portions, and each of the coil bodies is connected in series in the circumferential direction. Each of the coil bodies has an inner end (93) which is one end of the conductor wire at a position on a radially inner side of the coil body, and an outer end (94) which is the other end of the conductor wire at a position on a radially outer side of the coil body. In the coil body, the inner end is connected to the inner end of another coil body adjacent to the coil body on one circumferential side, and the outer end is connected to the outer end of another coil body adjacent to the coil body on the other circumferential side.

The application relates to the technical field of motor equipment, and discloses a high-overload three-phase brushless motor, which comprises a shell, a plurality of insertion grooves are formed in the side wall of the shell, a bolt is slidably connected in the insertion grooves, and a rotating shaft is rotatably connected in the shell. When the spring elasticity is used to reduce the gap and the running deviation of the rotating shaft, the situation that the rotating shaft and the magnetic steel are damaged or rubbed during the rotation process under the high-overload condition due to the excessively large gap formed between the rotating shaft and the surrounding structure under the high-overload condition can be reduced, the operation accuracy and stability of the equipment during the high-overload process are ensured, and the reliability of the equipment during the operation is improved.

The utility model relates to the technical field of motors, in particular to a hollow cup brush motor and gear motor system, which comprises a casing, two bearings, a stator assembly and an armature cup assembly, a first mounting hole and a second mounting hole are correspondingly arranged at the closed ends of a cover body and the casing, and the two bearings are respectively mounted in the first mounting hole and the second mounting hole. A first mounting gap is formed between the peripheral side of the coil cup and the inner wall of the mounting cavity, the commutator is inserted into one end, close to the cover body, of the coil cup, the rotating shaft penetrates through the stator assembly and the commutator, the two ends of the rotating shaft are rotationally connected to the two bearings respectively, and at least one end, close to the cover body, of the rotating shaft is an open bearing; and the first mounting gap is communicated with the external working environment. When the hollow cup brush gear motor works in an oil bath environment, the pressure inside and outside the motor can be kept balanced, the running state without pressure difference is achieved, the working load is reduced, the working efficiency is improved, and the service life is prolonged.

An electric motor with shaft, rotor and stator. The stator has a pair of magnets and the rotor has a number of rotor poles, and the same number of electrically isolated pole windings and inter-pole spaces. The motor has first and second commutators, each divided into equally arc spaced commutator segments, the same number as the number of rotor poles.

The invention relates to an arrangement for operating an electric motor, for example an electric motor for actuating a roof component, in a vehicle. Therein, the electric motor is electrically connected via at least two control lines with a motor control unit. The motor control unit is configured to control the electric motor by means of pulse width modulation. The motor control unit is configured to operate a first one of the two drive lines as an inactive line, and to operate a second one of the two drive lines as an active line during control of the electric motor. A switching module associated with the electric motor is configured to connect a terminal of the pole housing of the electric motor with the drive line which is operated as the inactive line during operation of the electric motor. The invention further relates to an electric motor as well as to a method of operating an electric motor, for example an electric motor for actuating a roof component, in a vehicle.

A choke coil is mechanically fixed without using an adhesive, and a fixed state is maintained for a long period of time. A fixing structure of a choke coil electrically connected to a brush that is in sliding contact with a commutator and housing a ferrite core inside includes: a bottom surface portion where the choke coil is placed; a housing wall portion erected from the bottom surface portion and forming a first space that houses the choke coil with the bottom surface portion; an elastic portion that is formed by notching a part of the housing wall portion and capable of elastic deformation; and a pressing portion that presses the choke coil via the elastic portion by biasing the elastic portion to an inside of the first space, and fixes the choke coil between the pressing portion and the inner surface of the housing wall portion.

The invention relates to the field of micro electro mechanical systems, and discloses a magnetic circuit module, a micro electro mechanical system rotating mirror and a laser communication terminal. The magnetic circuit module comprises a first magnet yoke, a permanent magnet and a second magnet yoke; the first magnet yoke comprises a first end face and a second end face, and the second magnet yoke comprises a third end face and a fourth end face. The first end face is connected with a first magnetic pole of the permanent magnet, and the third end face is connected with a second magnetic pole of the permanent magnet; the second end face is opposite to the fourth end face for forming an air gap; the area of the second end face is smaller than that of the first end face; and / or the area of the fourth end face is smaller than that of the third end face. According to the embodiment of the invention, the magnetic flux density of the second end face and / or the fourth end face with a smaller area can be obviously improved, so that the magnetic flux density in the air gap is improved.

The invention relates to a device and a method for predictive brush regulation in a separately excited electric machine. The separately excited electric machine (10) comprises a brush unit (20) with sub-brushes (21) which are movable by means of a regulating mechanism (22) driven by a regulating motor (23) either towards the commutator (13) to establish electrical contact between the sub-brushes (21) and the commutator (13) in a reversible manner or away from the commutator (13) to disconnect the electrical contact between the sub-brushes (21) and the commutator (13) in a reversible manner. The brush unit (20) is connected to a control unit which is designed to control the regulating motor (23) in such a way that only the minimum contact area between the entire sub-brush (10) and the commutator (13) required for reaching a predicted, i.e. future, electric machine (10) operating point is provided.

To provide a brush base for a brush motor which corresponds to multiple kinds of lead wires with different thicknesses.SOLUTION: An insertion hole 35 penetrated from an outside face 31a to an inside face 31b is formed through which a lead wire 39 (38) can be inserted from the outside face 31a side. The insertion hole 35 is formed having some thicknesses corresponding to the different thicknesses of multiple kinds of lead wires 39, which are predetermined for each of the lead wires 39 to be inserted. As an example, the insertion hole 35 includes a large diameter part 33 and a small diameter part 34, which have different diameters corresponding to the different thicknesses of two kinds of lead wires 39, and which are arranged in an axis C2 direction of the insertion hole 35 so that each thickness of the lead wires 39 inserted from the insertion side in the insertion direction is in order from large to small.SELECTED DRAWING: Figure 3

Provided is an electric motor capable of reducing influence of magnetic flux, which is generated by an armature winding, on a constant force spring. A magnetic motor (1) comprises: a rotor (20) having a rotation shaft (21), and a commutator (30) attached to the rotation shaft (21); a brush (40) adjacent to the commutator (30); a plurality of armature windings (22) connected to the commutator (30); a constant force spring (110); and a soft magnetic member (second bracket (102)) which is disposed between the plurality of armature windings (22) and the constant force spring (110), and shields magnetic flux generated by the plurality of armature windings (22). The constant force spring (110) is formed by a band-like plate material, and presses the brush (40) against the commutator (30).

A motor drive device includes a substrate, a motor drive portion, a feed pattern, a coil pattern, and a detection circuit. The feed pattern is formed on a first surface of the substrate. The coil pattern is formed on a second surface of the substrate and includes an overlapping portion formed in a region overlapping with the feed pattern and an adjacent portion formed in a region adjacent to the feed pattern. The detection circuit detects a magnitude of an induction current that flows in the coil pattern and outputs a detection signal. The detection circuit includes a current-voltage conversion circuit and an amplifier circuit.

A brush-type motor, according to the present invention, comprises: a stator; a rotor; a brush making contact with the rotor; and a brush hold for securing the brush, wherein the brush hold is formed in a pocket shape into which the brush is inserted, a guide slot is formed in a side surface of the brush, and a guide means is provided to the brush hold. The guide means includes a guide rail which is provided in one side surface of the brush hold and is formed so as to be projected toward the inside of the brush hold so as to be fitted into the guide slot. The guide rail is formed by inwardly bending any one front end among two front ends which are formed by bisecting the one surface of the brush hold in the length direction. The guide means includes a guide wire which is mounted in one side surface of the brush hold and protrudes toward the inside of the brush hold. The guide slot is formed so as to extend in the length direction of the brush and is formed in each of side surfaces of the brush which face each other, and the guide means includes leaf springs which are mounted in the brush hold so as to be fitted into the respective guide slots. The guide means includes torsion springs which are mounted in the brush hold so as to be fitted into the respective guide slots.

The application discloses a kind of electric tools of hall commutation structure, and relate to the technical field of electric tool.Its technical points are: including left casing, right casing, commutation fixed seat, commutation lever, steel ball, small first spring, commutation rod, first magnet, second magnet, first hall sensor, second hall sensor, control board assembly, by control board assembly to control motor rotation and then realize commutation function, the application has the advantages: using hall sensor can achieve contactless mode output commutation signal, without mechanical friction, so that tool assembly is simple, long service life, stable work.