114results about "Magnetic circuit shape/form/construction" patented technology

Disclosed are a non-contact rotary transformer and a motor comprising same. A non-contact rotary transformer according to the present invention is a device for connecting a rotor of a motor with an external power source in a non-contact manner, and is characterized by comprising: a core part disposed inside a hollow motor shaft in a coaxial structure with the motor shaft; a primary coil part installed on the outer circumferential surface of the core part; a secondary coil part which is installed on an inner main surface of the motor shaft and surrounds the primary coil part at a predetermined interval (air gap) therefrom; and a rectifier circuit part which is coupled to the motor shaft and rotates in synchronization therewith, and which is electrically connected to the secondary coil part.

The utility model provides a three-rotor linear motor which comprises a support, a rotor assembly and a stator assembly are arranged in the support, and the rotor assembly is arranged above the stator assembly in a suspended mode and is driven by the stator assembly to move back and forth in a staggered mode. The rotor assembly comprises an inner rotor and outer rotors arranged on the two sides of the inner rotor respectively, an annular frame integrally formed in a die-casting mode is jointly connected between the two outer rotors, the annular frame cannot make contact with the inner rotor when swinging, the annular frame swings along with swinging of the two outer rotors, and therefore it can be guaranteed that the swinging frequencies of the two outer rotors are consistent, and the service life of the two outer rotors is prolonged. The swing accuracy of the inner rotor is improved, the use of parts is greatly reduced, the structure is simplified, and the assembly efficiency is improved; a limiting piece is connected between the inner rotor and any outer rotor, an opening is formed in at least one end of the limiting piece, the inner rotor or the outer rotors are rotationally connected into the opening, impact caused by high-speed swing of the rotors can be reduced, noise is greatly reduced, and the user experience feeling is better.

The invention relates to the field of electrical engineering. A multi-pole, multi-phase generator-motor comprises a fixed magnetic core (stator), a movable magnetic core (rotor), a magnet and a winding. The fixed magnetic core contains a base element which consists of a magnet with a magnetizing winding and with generating windings arranged on two sides of the magnet such as to provide for opposite magnetic flux reversals in the combined power winding when the movable magnetic core is moving. The magnetizing winding is fed by the power windings via a rectifier. The number of base elements is a multiple of 6 or 12. The base elements are offset from one another by an angle β = Т+ΔТ and are arranged uniformly at the vertices of regular polygons, where T is a period determined by the angular size of a tooth and a space of the rotor, and ΔТ is the same dimension divided by the number of phases required by the consumer. All of the power windings of the base elements are connected in series. The technical result is that of providing a multi-phase alternating voltage to the end consumer.

The utility model provides a mover support frame assembly, mover and planar motor, the mover support frame assembly comprises a support frame, a rolling part and a backstop part, the support frame is connected with the mover, the support frame is provided with an accommodating groove, the rolling part is arranged in the accommodating groove, the backstop part is covered on the accommodating groove, a part of the rolling part is exposed outside the backstop part, and the backstop part is arranged in the accommodating groove. Thus, when the weight of an object borne by the mover exceeds the bearing range of the mover, the mover realizes relative movement with the stator through the rolling part, the friction force between the mover and the stator can be reduced, the abrasion between the mover and the stator is reduced, the service life of the planar motor is prolonged, and the application range of the planar motor is widened.

This invention discloses an R-T-B sintered magnet with reduced eddy current losses, its preparation method, and its application. The magnet has partition grooves on one or two orientation surfaces, where each orientation surface is perpendicular to the orientation direction of the magnet. The partition grooves extend through the magnet in a first extension direction but not in a second extension direction. The first extension direction of the partition grooves is perpendicular to the orientation direction of the magnet, and the second extension direction is parallel to the orientation direction of the magnet. By creating crisscrossing partition grooves on the magnet and filling them with an insulating layer, this invention increases the resistivity of a thin layer on the magnet's surface by a certain thickness, significantly reducing motor power loss due to eddy current effects. The insulating layer filling the grooves increases the resistivity of both the magnet surface and the grooves, effectively preventing conduction due to poor processing or current breakdown when the groove width is narrow. It also compensates for the reduction in mechanical strength caused by the grooving, ultimately resulting in a low-eddy-current, high-strength sintered magnet.

The invention discloses a preparation method of a ferromagnetic annular rubber magnet, which comprises the following steps: providing a sheet material of the rubber magnet, and cutting the sheet material into strips to form a plurality of rubber magnetic strips; performing primary cold pressing treatment on the rubber magnetic strip, so that the two ends of the rubber magnetic strip are jointed to form a conical annular magnet; performing secondary cold pressing treatment on the conical annular magnet to form an annular magnet; and carrying out hot-pressing vulcanization, cooling shaping and magnetizing on the annular magnet in a high-intensity magnetic field to realize special magnetic circuit magnetization so as to obtain the ferromagnetic annular rubber magnet. According to the preparation method, the annular rubber magnet which is high in raw material utilization rate and has strong magnetism can be prepared.

The present invention relates to a shaft (1) with a first shaft part (2) and a second shaft part (4) welded to it, - wherein the two shaft parts (2, 3) have an outer diameter d a exhibit - wherein the first shaft part (2) transitions via a step (5) into an axial extension (6) with an outer diameter d f transitions, whereby d applies f < d a , and where the outer diameter d f an inner diameter d w of the second wave part (4) corresponds to - wherein at a transition (7) from the step (5) to the axial extension (6) an annular groove (10) is provided which is oriented obliquely to the axial direction (8), the outer groove wall (11) and the inner groove wall (12) of which have an acute angle α to the axial direction (8), - where one radial thickness s a a step end face (14) at least approximately a radial thickness s bcorresponds to a wave end face (15) of the second wave part (4), - wherein the first wave part (2) extends over the entire radial thickness s a the step end face (14) is welded to the shaft end face (15) of the second shaft part (4).

This invention discloses a multi-stage adjustable speed power shunt motor system and its control method, relating to the field of motor technology. The system includes at least two stages of motor units arranged sequentially along the axial or radial direction; the rotor of the first-stage motor unit serves as the total power output end; the rotor of the second-stage motor unit is driven by the stator of the previous-stage motor unit, driving the stator to rotate; except for the last stage, all other stators are rotatable structures. By controlling the rotation direction and speed of the rotors of the second-stage and subsequent motor units, the relative speed between the stator and rotor of the previous-stage motor unit is adjusted, achieving electromagnetic coupling and power shunt, thus changing the system's total output torque, speed, and back electromotive force. This invention has a compact structure, achieves optimized efficiency under all operating conditions, balances low-speed high torque and high-speed constant power operation, and optimizes both drive and power generation performance, making it suitable for electric vehicles, wind power generation, industrial transmission, and other fields.

The application belongs to the technical field of winding type iron cores, in particular to a winding type iron core for a motor, which comprises an iron core body, a support frame is arranged around the iron core body, support rods are arranged in an array inside the support frame, annular grooves are symmetrically arranged inside the support frame, sliding rings are arranged inside the annular grooves, a driving assembly for driving the sliding rings to move is arranged inside the support frame, limit grooves are symmetrically arranged on the annular grooves, and positioning blocks are arranged inside the limit grooves. The winding type iron core for the motor is convenient for quickly positioning and installing the position of the winding type iron core for the motor through the positioning blocks and the sliding rings, the support frame and the iron core body can be moved to the installation position inside the motor, the positioning blocks can be pushed to slide inside the limit grooves by rotating the knob, the limit grooves can guide the positioning blocks to move stably, the position of the support frame can be positioned, the position of the winding type iron core for the motor can be positioned and installed, and the installation efficiency is improved.

The utility model relates to the field of magnetic rings for motors, and discloses a magnetic ring for a high-strength transmission motor. The end, opposite to the buffering connector, of the connecting rod is provided with an inserting rod, a through groove is formed in the inserting rod, a reset spring is installed in the through groove, the two ends of the reset spring are connected with fixing clamping blocks, and the end, close to the first half magnetic ring body, of the second half magnetic ring body is provided with an adaptive clamping sleeve. An adjusting slot matched with the fixed clamping block is formed in the surface of the adaptive clamping sleeve; the distance between the first semi-magnetic ring body and the second semi-magnetic ring body is adjusted according to specific installation requirements, during adjustment, the distance between an insertion rod and an adaptive clamping sleeve can be adjusted by pressing a fixing clamping block inwards, then an anti-disengaging fixing screw is screwed into an anti-disengaging threaded hole, anti-disengaging fixing can be conducted on the fixing clamping block from the side edge, and the anti-disengaging effect is achieved. In the using process, even if large vibration occurs, falling is not prone to occurring, and the stability of the whole device in the using process is improved.

The invention relates to a suspension motor actuator, a suspension assembly and a vehicle. The suspension motor actuator comprises a shell assembly and a suspension assembly, the rotor assembly is partially located in the shell assembly, and the rotor assembly can generate variable relative displacement relative to the shell assembly; the elastic supporting assembly comprises a first elastic piece, one end of the first elastic piece abuts against the shell assembly, and the other end of the first elastic piece abuts against the rotor assembly; the first elastic piece is a variable-rigidity elastic supporting assembly. According to the suspension motor actuator, the suspension assembly and the vehicle, on the premise that the effective stroke of the rotor of the suspension motor is guaranteed, the maximum radial size and the maximum axial size of the suspension motor actuator assembly can be controlled within a reasonable range.

The present application discloses a system comprising: a stator having a plurality of windings configured to generate a rotating magnetic field; a first rotor having a plurality of permanent magnets having an associated second magnetic field; a second rotor through which the rotating magnetic field and the second magnetic field are coupled, wherein rotation of the first rotor is magnetically coupled to rotation of the second rotor; a first rotation sensor associated with the first rotor; a second rotation sensor associated with the second rotor; and a controller configured to control current supplied to the windings based on signals from the first sensor and signals from the second sensor, wherein one of the first rotor and the second rotor is a drive rotor configured to be attached to an external load, and the other of the first rotor and the second rotor is a passive rotor.

The application discloses a rotor motor and relates to the technical field of motors, wherein the rotor motor comprises a rotor part, a stator part, an electromagnetic brake part and a sealing assembly; the stator part comprises a stator coil and is used for driving the rotor part to rotate; the electromagnetic brake part comprises a brake coil and a magnetic conducting sheet; the brake coil is used for driving the magnetic conducting sheet; the magnetic conducting sheet is used for abutting and braking the rotor part; the sealing assembly is rotationally sealed with the rotor part, is used for sealingly wrapping the abutting and braking area of the electromagnetic brake part and the rotor part, and is internally provided with a containing cavity for containing the debris generated by the abutting and braking. The rotor motor wraps the abutting and braking area of the electromagnetic brake part and the rotor part through the sealing assembly, and the containing cavity is arranged to contain the debris generated by the abutting and braking, so that the influence on the working stability of the rotor motor and the influence on the braking effect are effectively reduced.

The invention provides a high-performance flexible motor magnetic strip and a preparation method and application thereof. The high-performance flexible motor magnetic strip comprises a strong magnetic layer, a first plain layer and a second plain layer, wherein the first plain layer and the second plain layer cover the two sides of the strong magnetic layer respectively; the high-performance flexible motor magnetic strip is prepared by calendering different magnetic adhesive tapes at a relatively low temperature, so that the influence on the performance of the magnetic strip due to processing of the original magnetic adhesive tape at a high temperature is avoided, and the stability and the reliability of the high-performance flexible motor magnetic strip are improved. And the composite plain sheet layers on the two sides of the strong magnetic layer improve the oxidation resistance and increase the mechanical strength of the composite material on the basis of ensuring the magnetic performance strength of the composite material, so that the high-performance flexible motor magnetic strip better meets the requirements of high-rotating-speed motor operation on high-performance and high-strength magnets.

This utility model discloses an injection-molded magnet assembly for an electric motor, belonging to the technical field of magnet assembly. It includes an injection-molded outer shell and a magnetic housing, with a positioning hole inside the bottom wall of the injection-molded outer shell. The beneficial effects of this utility model are that it features a detachable magnetic housing and magnets. The positioning hole inside the bottom wall of the injection-molded outer shell provides alignment support for the magnetic housing. The magnetic housing is composed of multiple circular magnets arranged in a ring array, with a positioning post fixed at the bottom, inserted into the positioning hole of the injection-molded outer shell for positioning and fixation. The magnets are fixedly installed inside the magnetic housing, providing a magnetic field. The two outer walls of the magnetic housing are in contact with each other, enhancing the stability and strength of the overall structure. The injection-molded outer shell is installed on the outside of the magnetic housing through an injection molding process, forming a tight whole. A limit frame is provided on one side wall of the magnetic housing, with hexagonal bolts installed inside, which can further fix the injection-molded outer shell, ensuring the stability of the assembly.

This invention provides a Fe-based soft magnetic amorphous alloy sheet capable of easily reducing losses in laminated iron cores, a laminated iron core and a rotary motor using the sheet, and a method for manufacturing the Fe-based soft magnetic amorphous alloy sheet. The Fe-based soft magnetic amorphous alloy sheet for laminated iron cores of this invention is characterized in that the sheet has: opposing front and back sides; and side sides, the sheet thickness is 10–50 μm, the side sides have fracture surfaces inclined relative to the thickness direction of the sheet from the front and back sides respectively, and the side sides are V-shaped in cross-section in the thickness direction of the sheet, gradually tapering towards the ends.

The invention relates to a method for operating an electric machine (4), at least comprising the step: (S200) at least temporarily subjecting a laminated core (10, 18) of the electric machine (4) to ultrasound.

toroidal coil arrangement (10), comprising - a toroidal outer coil (12) with a plurality of electrically interconnected outer windings enclosing an outer coil interior, and - a toroidal inner coil (14) arranged concentrically to the outer coil (12) within the interior of the outer coil, with a plurality of electrically interconnected inner windings, wherein each of the coils (12, 14) has a pair of terminals (121; 141) for its separate electrical contacting, characterized by that the outer coil (12) has two open ring rails (122a,b) running at a constant distance from each other, defining an annular gap (124) between them, which are connected to each other by conductor arcs (123) distributed evenly over their circumference, forming the outer windings.

A coil body (32) is provided with substrates (34) which are formed using an insulating material in a shape extending in the radial direction and which are laminated in the axial direction. Furthermore, the coil body (32) has a magnetic field generation unit (80) which is formed on the substrate (34) using a conductive material, and which generates a rotating magnetic field when energized. Furthermore, the coil body (32) has a reinforcing part (70) formed in a region different from the region in which the magnetic field generating part (80) is formed on the surface of the substrate (34) facing the axial direction. The reinforcing part (70) reinforces the substrate (34).

The invention provides an amorphous strip with high saturation flux density, a preparation method of the amorphous strip and an amorphous motor iron core. The amorphous strip comprises the following components in atomic percent: 1.5-2.5% of Si; 14 to 16.5 percent of B; 0.2% to 0.5% of C; 1 to 5 percent of La; 0.5 to 3 percent of Mo; 0.5 to 3 percent of Cr; 0.2-1.0% of R, wherein R is at least one of Nb, Ta, Hf and Zr; and the balance of Fe and inevitable impurities. The saturation flux density Bs of the amorphous strip is larger than or equal to 1.75 T, and the high-frequency iron loss P10 / 50k is smaller than or equal to 0.16 W / kg. 0.2-1.0 at% of rare metal R (Nb / Ta / Hf / Zr) is introduced into a Fe-Si-B-C-La-Mo-Cr system, and a gradient vacuum impregnation process is matched, so that the contradiction among high Bs, low loss, high toughness and high bonding strength is systematically solved. The prepared amorphous strip has the performance of high saturation flux density, low high-frequency iron loss, high toughness, high bonding strength and the like which are remarkably superior to those in the prior art, has excellent performance of zero falling, high filling rate, high mass production stability and the like, and has direct industrial application value.

This invention provides a highly efficient chiller system using an inverter equipped with SiC elements. [Solution] A chiller device comprising a refrigerant circuit including a compressor, condenser, throttle device, and evaporator with a built-in motor, a bypass circuit branched from the refrigerant circuit, an inverter for driving the motor, and a control unit, wherein the motor for driving the compressor is cooled by the refrigerant flowing through the bypass circuit, the control unit for controlling the motor operates the inverter, which includes a wide-bandgap semiconductor element, at a carrier frequency of 10 kHz or higher, and the motor has a product of the square root of its rated rotational speed [rpm] and rated power [kW] of 180,000 or higher.

The utility model relates to a miniature focusing motor, which comprises a shell loaded on a camera, a magnetic field generation module arranged on the shell, an elastic upper cover arranged on the shell, a lens arranged in the middle of the elastic upper cover, a plurality of coils arranged at the lower part of the elastic upper cover, and a plurality of coils used as current access spacing adjustment execution members and accessed into different currents and magnetic fields. The distance between the coils is adjusted, the elastic upper cover is driven to elastically deform, the lens is driven to float upwards for adjustment, the imaging distance between the lens and the optical sensor is adjusted, and a miniature focusing motor structure capable of fast focusing is formed.

The present invention provides a core in which a plurality of plate-shaped soft magnetic materials are bonded with high adhesion between layers. The core (1) of the present invention includes a plurality of plate-shaped soft magnetic materials (2) laminated with a thermosetting resin layer (3) interposed therebetween, and rubber particles (4) are dispersed in the thermosetting resin layer (3). The content of the rubber particles (4) is preferably more than 0 phr and 8 phr or less when the content of the thermosetting resin is 100 phr. The thermosetting resin layer (3) is preferably an epoxy resin, an unsaturated polyester resin, or an acrylic resin.

The application discloses a compact voice coil deformable mirror based on a micro voice coil driver and belongs to the field of adaptive optics. The application considers that the output force of the micro voice coil driver is two to three orders of magnitude smaller than that of a conventional voice coil driver, adopts a polyimide to replace a glass, silicon carbide and other materials with a large stiffness coefficient which are conventionally used to make a thin mirror surface, provides certain stiffness for the polyimide through a spring structure so as to meet the stiffness requirement, comprehensively considers the correlation between structure parameters, materials, working currents and other performances of the voice coil deformable mirror and the phase modulation amount, frequency and other performances of the voice coil deformable mirror, balances and optimizes the structure parameters, and obtains the compact voice coil deformable mirror with the best comprehensive performance. It is verified through experiments that the single micro driver provided in the application can reach a maximum output force of 1mN, a motor constant of 0.032N x W ‑1 / 2 ; the phase modulation amount of the compact deformable mirror reaches ±45um, and the first resonance frequency reaches 2000Hz.

The invention discloses a hybrid excitation type double-permanent-magnet magnetic driving system and method.In the system, a first hybrid magnetic field generating device comprises a first pole shoe, a first excitation coil, a first permanent magnet, a first magnetic conductive arm and a first turn-off structure; the second mixed magnetic field generating device comprises a second pole shoe, a second excitation coil, a second permanent magnet, a second magnetic conductive arm and a second turn-off structure, the excitation coil is used for generating an electric excitation field, and the pole shoe and the permanent magnet are used for generating a permanent magnetic field; the first turn-off structure is fixedly arranged between the two arms of the first magnetic conductive arm and used for controlling turn-off of permanent magnet excitation in the first mixed magnetic field generating device, and the second turn-off structure is fixedly arranged between the two arms of the second magnetic conductive arm and used for controlling turn-off of permanent magnet excitation in the second mixed magnetic field generating device. The magnetic flux closed loop is formed by the pole shoes, the permanent magnets, the first magnetic conductive arms and the second magnetic conductive arms, the magnetic field between the pole shoes can be effectively reinforced and stabilized, and a strong magnetic field is formed.

To provide a rotating electric machine that can suppress the decrease in rotational efficiency. [Solution] The rotating electric machine 1 comprises a stator core 10, a rotor core 20, and a coil 30 composed of conductors 31. The stator core 10 has a plurality of teeth 11 arranged along the circumferential direction D2 of the stator core 10, the teeth 11 have two end faces 12a, 12b spaced apart in the axial direction D3 of the stator core 10, the conductor 31 is wound around the teeth 11 through the end faces 12a, 12b, the coil 30 has a first point P located on one edge of the end faces 12a, 12b in the circumferential direction D2 and a second point Q located on the other edge of the end faces 12a, 12b in the circumferential direction D2, at least a second portion 33 between the first point P and the second point Q extends in the radial direction D1 or substantially radial direction D5, at least the second portion 33 is aligned with the second rotor portion 22 in the axial direction D3, and the coil 30 is not folded back in the radial direction D1 at the end faces 12a, 12b.

The invention relates to a linear compressor with a linear electric motor and a household appliance. Disclosed is a linear compressor for a household appliance (e.g., a refrigerator) in which a yoke-magnet arrangement is clamped on a cylinder of a cylinder-piston arrangement in a manner that enables temperature expansion of the yoke-magnet arrangement; in particular by forcing the yoke-magnet arrangement against a fixed stop of the cylinder via a spring force. The invention further discloses a household appliance.

The present embodiment relates to a lens driving device comprising: a housing comprising a first hole and a second hole; a first bobbin disposed in the first hole of the housing; a second bobbin disposed in the second hole of the housing; a first coil disposed on the first bobbin; a second coil disposed on the second bobbin; a first magnet disposed in the housing to face the first coil; a second magnet facing the second coil; and a third magnet disposed between the first coil and the second coil.