557 results about "Magnetic loop" patented technology

The invention discloses a half-open type thrust magnetic levitation bearing. The bearing comprises a first magnetic ring, a second magnetic ring and a third magnetic ring, wherein the first magnetic ring, the second magnetic ring and the third magnetic ring are arranged in annular and laminating manners so as to form an annular magnetic pole; the magnetic pole of each of the magnetic rings is different from that of the adjacent magnetic ring; a first winding and a second winding of the annular magnetic pole are wound according to a predetermined half-open way, the lower part of the middle magnetic pole is recessed inwards so as to generate a winding space which meets predetermined conditions; and the magnetic pole arranged at the upper end extends, and thus, a complete circle of magnetic pole is formed after splicing. Based on the bearing, continuity and consistency of magnetic field strength of the magnetic poles of the half-opened axial thrust bearing can be basically reserved, and the half-open type thrust magnetic levitation bearing can be applied to high-speed rotation machines; and moreover, a more flexible mounting way can be obtained, particularly to large-size rotation machines.

The utility model discloses an electromagnetic relay and a power utilization device. The electromagnetic relay comprises a static contact assembly provided with a static contact, a movable spring assembly, a first magnetic conductive piece and a second magnetic conductive piece. The movable spring assembly comprises a movable spring body and a movable contact arranged on the movable spring body; one end of the movable spring body is a fixed end, and the other end is a movable end; and the movable contact can be in contact with or separated from the static contact. The first magnetic conducting piece is fixedly connected with the insulating structure and is located in a magnetic field corresponding to the part, used for current circulation, of the movable spring body; the second magnetic conducting piece is fixedly connected to the side, away from the static contact, of the movable spring body, the second magnetic conducting piece and the first magnetic conducting piece are oppositely arranged, and when the movable contact and the static contact are closed and conducted, the first magnetic conducting piece and the second magnetic conducting piece form a closed magnetic loop based on current flowing in the movable spring body and generate electromagnetic attraction force; and the movable contact and the static contact are driven to resist the electric repulsive force and keep a closed conduction state. The relay provided by the embodiment of the utility model has the advantages of excellent short-circuit resistance, low consumption of copper consumables and low cost.

The invention belongs to the technical field of encoder signal processing, and particularly relates to an encoder capable of realizing non-contact rotation through a measurement magnetic ring of a magnetic induction technology and a TMR magnetic induction read head encoder, performing digital signal processing through a DSP under the driving of a high-speed motor, and integrating signal direct-current bias, amplitude phase difference correction and temperature detection through a program. High-precision position feedback is achieved by subdividing and encoding sine and cosine orthogonal signals inductively output by the measuring magnetic ring, the RS485 protocol communication has the advantages of being high in anti-interference capacity and rich in communication protocol, state monitoring information can be obtained while position information is obtained, motor parameters and encoder parameters can be stored in a built-in mode, and high-precision position feedback can be achieved through a driver. The upper computer is used for reading and modifying, operation is convenient, and the application range is wide.

The invention provides a magnetic conductive device and method, electronic equipment, a storage medium and a program product, and the device comprises a magnetic ring powder cavity which is used for accommodating magnetic ring powder; the magnetizing coil is used for charging to generate a magnetic field; the first magnetic conduction section is used for receiving the magnetic field, so that the magnetic ring powder is subjected to main path magnetic conduction; the second magnetic conduction section is connected to one side of the first magnetic conduction section and is used for inhibiting a receiving magnetic field, so that non-main-path radial or axial magnetic conduction of the magnetic ring powder is reduced; and the third magnetic conduction section is connected to the other side of the first magnetic conduction section and used for restraining the receiving magnetic field, so that non-main-path radial or axial magnetic conduction of the magnetic ring powder is reduced. In this way, the magnetic conductive device is definitely segmented into a plurality of magnetic conductive sections. In the magnetizing process, the magnetic field can be distributed along the preset main path more intensively through the synergistic effect of all the magnetic conduction sections, magnetic field dispersion in the non-main-path radial direction or the axial direction is effectively reduced, the magnetic performance is improved, the expectation can be achieved, and the magnetizing device can adapt to various scenes.

The utility model belongs to electric drive controller technical field, propose a kind of filter module and power domain control unit, wherein a kind of filter module includes shell, second capacitor, ferrite magnetic ring, first capacitor, nanocrystalline magnetic ring and third capacitor are sequentially inlaid with on the surface of shell from input to output, connection line is provided in the shell, second capacitor, first capacitor and third capacitor are all with connection line electricity is connected;The utility model's filter module includes shell, second capacitor, ferrite magnetic ring, first capacitor, nanocrystalline magnetic ring and third capacitor are sequentially inlaid with on the surface of shell from input to output, and then the module of integrated filter of small volume is realized, the volume of filter module is reduced.

This utility model discloses a frequency converter controller, including a control unit, a first filtering topology, and a second filtering topology. The first filtering topology includes a differential-mode inductor unit, and the second filtering topology includes a common-mode inductor unit. The first filtering topology is connected to the live wire, neutral wire, and protective ground wire, and receives the input signal from the power input terminal, suppresses the differential-mode noise and common-mode noise of the input signal from the power input terminal, and generates a first electrical signal. The second filtering topology receives the first electrical signal, suppresses the differential-mode noise and common-mode noise of the first electrical signal, and generates a second electrical signal. The control unit receives the second electrical signal. Because a differential-mode inductor unit is added to the first filtering topology, the number of magnetic rings can be reduced, the number of installation steps can be reduced, and costs can be optimized.

The utility model discloses a magnetic ring inductance rotary wire feeding mechanism which comprises a speed reducer fixing plate and a pair of speed reducers symmetrically arranged on the speed reducer fixing plate, an eccentric rotary wire feeding assembly is rotatably connected with the speed reducer fixing plate through the speed reducers, and each speed reducer comprises a longitudinal output shaft. One end of the bottom of the longitudinal output shaft penetrates through the speed reducer fixing plate and is fixedly connected with the eccentric rotary wire feeding assembly, the eccentric rotary wire feeding assembly comprises a wire feeding guide pin used for outputting a metal wire, and the wire feeding guide pin and the longitudinal output shaft are arranged in a non-coaxial mode; the eccentric rotary wire feeding assembly is adopted, copper wires can be tensioned in the wire feeding process, equivalent rotation can be conducted according to rotation of the magnetic ring in the wire feeding process, the magnetic ring is round, and the tensioning end and the wire feeding end of the eccentric rotary wire feeding assembly can rotate along with the track of the magnetic ring. Therefore, the purpose that the thread end can rotate along with the magnetic ring can be achieved; and the stability and the accuracy of magnetic ring winding are improved.

The invention relates to the technical field of geological disaster monitoring, and discloses an automatic monitoring method for monitoring stratum collapse by using a layered settlement meter, which comprises the following steps: step 1), mounting an isolation pipe in a monitoring hole; step 2), placing the isolation pipe provided with the magnetic ring into the monitoring hole; (3) filling a gap between the outer wall of the isolation pipe and the hole wall of the monitoring hole with a backfill soil layer; (4) adjusting the relative positions of a plurality of magnetic layering settlement sensors on the core rod to enable the magnetic layering settlement sensors to be matched with the positions of the magnetic rings, and then loading the core rod into the isolation pipe; 5) matching a data acquisition terminal on the core rod, and configuring power supply equipment on the data acquisition terminal; by drilling holes in hidden danger points, installing isolation pipes and arranging magnetic rings and magnetic layering settlement sensors, layering monitoring of different depths of the stratum is achieved, the limitation that a settlement layer position is difficult to accurately position in traditional monitoring is broken through, and the settlement dynamic state of the stratum of each depth can be clearly captured.

The utility model discloses a miniature 60A gradient magnetic conductivity direct-current-resistant current transformer which comprises a bottom shell, a winding magnetic ring, an electronic wire with a terminal and an epoxy glue layer. A shell cavity is formed in the bottom shell; a wire connecting seat extending upwards from the bottom along the shell wall is arranged in the shell cavity; a plurality of wire connecting grooves are formed in the wire connecting seat at intervals, and each wire connecting groove is provided with a through hole in the top surface of the wire connecting seat and one surface, opposite to the shell wall, of the wire connecting seat; each external connection end of the winding magnetic ring is correspondingly connected with one wiring end of the electronic wire with the terminal to form a connection part, and each connection part is reinforced by tin immersion; the winding magnetic ring is installed in the shell cavity, the electronic wire with the terminal is arranged outside the bottom shell, and the connecting part penetrates into the wire connecting groove and is positioned through the wire connecting groove. The epoxy glue layer is formed by pouring epoxy glue into the shell cavity after the winding magnetic ring and the electronic wire with the terminal are installed. According to the utility model, the size reduction and miniaturization of the mutual inductor can be realized under the condition that the connection between the winding magnetic ring and the electronic wire is not influenced.

This utility model relates to a circuit breaker that saves internal installation space, including a housing. The housing contains terminals, a terminal block, wires, and a magnetic ring. The wires are soldered to the terminal block. A terminal opening is provided on the housing corresponding to the terminal position. The key feature is that the housing has an installation chamber, in which the terminals and the terminal block are installed. The terminal opening communicates with the installation chamber. An opening for the wires to enter and exit is provided on the side of the installation chamber near the magnetic ring. A welding plate extending towards the terminal opening is provided on the lower end face of the terminal block, and the wires are soldered to the bottom of the welding plate. By adopting the above technical solution, this utility model provides a circuit breaker that saves internal installation space. Soldering the wires to the bottom of the terminal block saves extra internal space in the circuit breaker, allowing for the installation of larger magnetic rings and wires. In daily assembly, the internal components of the circuit breaker will be easier to install into the housing.

The utility model discloses a kind of power inductors, by the cooperation base assembly of a group of magnetic ring splicing into annular cylinder with prefabricated flat coil, wherein flat coil is annular winding with turn gap zero under prefabricated state, flat coil is reversed and folded to show fin ring under assembly state, two free ends of flat coil are extended in parallel in two states, magnetic ring is inserted in fin ring and is bonded to receive port, under the state that flat coil wraps closed loop magnetic ring, two free ends are penetrated and fixed to base. The inductor effectively solves the production problem of using flat wire to wind circular power inductor by optimizing the variable shape of flat coil prefabrication and assembly and splitting and splicing magnetic ring for embedded assembly, effectively improves the current-carrying capacity of inductor device, improves its DC-DC Converter Buck circuit conversion efficiency under the condition of reducing copper loss and iron loss.

The invention discloses a dielectric composite electromagnetic interference suppression winding magnetic ring, and relates to the field of electronic components. The device comprises a winding belt, and the winding belt is arranged on the periphery of a suppressed cable in a winding mode to form a winding magnetic ring structure. One of the two modes is as follows: (1) a soft magnetic material-polymer composite belt: an electromagnetic functional material is a soft magnetic material; the winding belt is a magnetic medium composite belt material formed by compounding a soft magnetic material and a high polymer material. And (2) a soft magnetic material / dielectric material / high-molecular double-layer composite belt and a grounding metal layer, wherein the electromagnetic functional material comprises a soft magnetic material and a dielectric material. The winding belt is formed by compounding a soft magnetic material and a dielectric material with a high polymer material, the soft magnetic material and the high polymer material are compounded to form a magnetic dielectric layer, and the dielectric material and the high polymer material are compounded to form a dielectric medium layer; and the magnetic medium layer and the dielectric medium layer are overlapped along the thickness direction to form a double-layer composite winding belt. The resonant frequency and the insertion loss can be flexibly adjusted through the structure size and the material parameters.

The invention discloses an analog quantity signal intelligent preprocessor which is formed by detachably connecting a cable fixer integrated with a magnetic ring, a magnetic ring amplification module and a magnetic ring tail fixer, a plurality of fiber core holes and butt joint fixing holes are correspondingly formed in the two ends of the magnetic ring, a butt joint fixing pin is arranged on the cable fixer, and the butt joint fixing pin is connected with the cable fixer. The cable fixing device and the magnetic ring amplification module are made of amorphous magnetic ring materials which can be formed at a time, an analog quantity signal processing module is arranged in the tail end of the magnetic ring tail fixing device, the magnetic ring tail fixing device is made of neodymium iron boron magnetic ring materials, and the analog quantity signal processing module leads out a processed signal output terminal strip. The conduction sensitivity performance of the cable can be improved by selecting the number of wire cores penetrating through the magnetic ring, and different self-correction function modules for sensor analog quantity signals (temperature, pressure, current and the like) based on a neural network algorithm can be installed according to requirements.

The utility model discloses a packaging device of embedded intelligent integrated sensing magnetic ring, specifically relates to electronic packaging technical field, including transfer subassembly, positioning cleaning subassembly, burdening subassembly and potting subassembly, the positioning cleaning subassembly is installed above transfer subassembly, and the burdening subassembly is placed on the side face of positioning cleaning subassembly, and the potting subassembly is placed on the side face of the burdening subassembly. By means of the positioning and cleaning assembly, when the packaging equipment uses a mechanical arm to splice a substrate and a magnetic ring, accurate splicing and positioning can be provided, the problems of eccentricity and inclination in butt joint of the substrate and the magnetic ring are solved, and therefore the efficiency and performance of the magnetic ring in the subsequent machining process are not affected. And the plasma cleaning gun can carry out dirt removal and oil stain removal treatment on the surface of the magnetic ring, so that the surface of the magnetic ring base connector is smoother, and subsequent potting treatment of the potting assembly on the magnetic ring base connector is facilitated.

The disclosure provides a power supply module, including: a pin; a magnetic core including: a first and second magnetic plate arranged in parallel; a first upper wiring layer; a first middle wiring layer; a first lower wiring layer, wherein at least a part of the first upper wiring layer and the first middle wiring layer are connected to form a first winding surrounding the first magnetic plate, at least a part of the first lower wiring layer and the first middle wiring layer are connected to form a second winding surrounding the second magnetic plate. The magnetic core, the first and second winding form a magnetic element electrically connected to a switch. A magnetic loop surrounds a first axis, the first winding surrounds a second axis, the second winding surrounds a third axis, the first, second and third axis are parallel to a plane where the pin is located.

This invention discloses a device and method for monitoring and warning of pit bottom heave throughout the entire excavation process, belonging to the field of foundation pit engineering safety monitoring technology. The device's anchoring unit includes a cone head, a radially deployable umbrella-type support assembly, and a cylindrical guide rail. Reliable anchoring is achieved by inserting the cone head into a stable soil layer and deploying it in conjunction with the support plate. The measuring unit includes a protective tube that can slide axially along the cylindrical guide rail, a measuring rod fixed to the guide rail, a magnetic ring that moves synchronously with the protective tube, a magnetostrictive displacement sensor, a flexible cable, and an intelligent acquisition module. This invention enables high-precision, automated, and remote real-time monitoring and early warning of the entire foundation pit excavation process, facilitating timely warning of pit bottom heave risks.

This invention provides a relay terminal plug-in structure, belonging to the technical field of relay equipment. It includes a relay body connected to a first wire, which in turn connects to a front terminal assembly, which in turn connects to a rear terminal assembly. It also includes: a cleaning assembly comprising a magnetic ring and a telescopic airbag; a plug-in assembly comprising a push ring and a terminal head connected to a telescopic spring; and a fire extinguishing assembly comprising a storage cylinder and a second telescopic airbag. The invention offers the following advantages: it prevents accidental loosening of the terminal head during use, ensuring stability; it reduces dust adhesion to the surface, ensuring smooth current flow; and when exposed to open flame, it sprays out the fire extinguishing dry powder from the storage cylinder, quickly dispersing it to ensure uniform spraying and extinguishing the fire at the connection point, effectively increasing coverage, improving fire extinguishing effect, and reducing property damage and personal injury.

An electric machine, in particular a motor or a generator, comprising a rotor and a stator, wherein the rotor comprises a planar, ring-shaped rotor base element and the stator comprises a planar ring-shaped stator base element, wherein the rotor base element and the stator base element are aligned along an axial axis (Z) of the electric machine, wherein a plurality of magnet elements are arranged around the circumference of the ring-shaped rotor base element forming a Halbach magnet-ring assembly, wherein the Halbach magnet-ring assembly generates a magnetic field (BR) with axial and azimuthal components, wherein a plurality of coils are arranged around the circumference (C) of the ring-shaped stator base element.

The invention discloses a miniature loudspeaker, the length-width ratio of the miniature loudspeaker is not less than 1.5: 1, the miniature loudspeaker comprises a shell, a vibration assembly and a magnetic circuit assembly, and the vibration assembly comprises a vibrating diaphragm assembly connected with the shell, a framework connected with the vibrating diaphragm assembly and an annular voice coil connected with the framework; the magnetic circuit assembly is accommodated in the shell and located below the vibrating diaphragm assembly, the magnetic circuit assembly is provided with a magnetic gap for the annular voice coil to move, and the magnetic circuit assembly comprises a lower yoke, a central magnetic structure and an upper yoke which are sequentially connected from bottom to top; the magnetic gap surrounds the central magnetic structure and is located between the upper yoke and the lower yoke, the magnetic circuit assembly is provided with an upper magnetic loop and a lower magnetic loop which are opposite in direction, the upper magnetic loop penetrates through the upper portion of the magnetic gap, and the lower magnetic loop penetrates through the lower portion of the magnetic gap. The miniature loudspeaker has the advantages of small size and high performance.

The utility model relates to the field of capacitance pen charging, in particular to a charging structure of a capacitance pen. When the electric quantity of the battery of the capacitance pen is used up, the battery of the capacitance pen can be charged by separating the first magnetic ring from the second magnetic ring, pulling out the wire in the wire storage module, electrically connecting the charging interface with the charging wire of the charging head and connecting the charging head with a power supply, so that the length of the charging wire can be indirectly increased; the requirement for the charging distance between the use position of the capacitance pen and the power source can be met under some conditions, the capacitance pen can be used while being charged, when the battery is not charged, the wire can be stored in the wire storage module, normal use of the capacitance pen is not affected, and under the condition that the capacitance pen is not suitable for being used, the use position of the capacitance pen is not affected. The charging structure can be charged like a common capacitance pen.

The utility model discloses an oil sampler with a quantitative structure, and relates to the technical field of oil samplers. The device comprises the main body, the clamping mechanism and the quantifying mechanism, the clamping mechanism comprises the first fixing plate, flexible adaptation to sampling bottles with different sizes is achieved by arranging the clamping mechanism, the first fixing plate and the second fixing plate in the clamping mechanism can clamp the sampling bottles with different sizes through adjustment of the screws, and therefore the sampling bottles with different sizes can be fixed conveniently. The sampling bottle is stably fixed in the sampling process, the problems of oil splashing and pollution caused by size mismatching of the sampling bottle are solved, the sampling accuracy is improved, the universality and practicability of equipment are enhanced, accurate quantitative sampling of oil products is achieved through the quantitative mechanism, and the sampling efficiency is improved. A first magnetic ring and a second magnetic ring in the quantifying mechanism are matched with quantitative marks on the main body, so that the moving distance of the piston can be accurately controlled, the sampled oil quantity is accurately controlled, and the sampling accuracy and the detection efficiency are improved.

This utility model discloses a magnetic ring inductive power current monitoring device for unmanned aerial vehicles (UAVs). It includes a magnetic ring sensor body with a through-hole and a PCB connected to the magnetic ring sensor body. The PCB includes a voltage conversion module, a magnetic induction sensor module, a microcontroller module, and a debugging interface module. Through the cooperation of these modules on the PCB, the magnetic ring sensor body can detect the real-time current value of the cable passing through the through-hole. This utility model solves the problem that the resistance-based overcurrent detection method used in existing technologies easily leads to power outages in the entire UAV power supply system.

The invention discloses a direct-current busbar filtering assembly, an inverter assembly and a vehicle, and belongs to the technical field of vehicles, the direct-current busbar filtering assembly comprises an insulating shell, a high-voltage connector, a magnetic ring, a grounding piece, a plurality of Y capacitors and two busbars, the insulating shell is provided with a central through hole, a first mounting groove and a second mounting groove, the first mounting groove is wound around the outer side of the central through hole, the second mounting groove is located in the side, away from the central through hole, of the first mounting groove, the high-voltage connector penetrates through the central through hole, the magnetic ring is mounted in the first mounting groove, the grounding piece is mounted on the insulating shell, and each Y capacitor is mounted in the second mounting groove. The high-voltage connector, the magnetic ring, the grounding piece, the Y capacitors and the two busbars can be integrated and fixed on the insulating shell, the direct-current busbar filtering assembly is compact in structure and small in occupied space, meanwhile, the magnetic ring and the Y capacitors can form an efficient common-mode filter, direct current entering an inverter is filtered from the source, and good electromagnetic compatibility is achieved.

Permanent magnet synchronous joint motor, magnetic encoder and angle detection method, relate to motor angle detection technical field. The magnetic encoder contains a magnetic encoder module and an AMR sensor array. The magnetic encoder module is suitable for being installed at the motor shaft end. The magnetic encoder module includes coaxially arranged outer ring magnet and inner ring magnet. The absolute value of the difference between the pole pairs of the outer ring magnet and the inner ring magnet is 2. The AMR sensor array is suitable for being arranged in the magnetic field action area of the outer ring magnet and the inner ring magnet. The AMR sensor array includes two AMR sensors located on the same radius line of the magnetic field action area. Two AMR sensors correspond to the magnetic field area of the outer ring magnet and the inner ring magnet respectively, and are used for synchronously collecting the signals of the respective corresponding magnetic ring. The signals are suitable for realizing high-resolution detection of single-turn absolute angle through double-ring vernier effect and disambiguation algorithm.

The utility model relates to the technical field of magnetic ring fixing, and discloses a fixing device for a magnetic ring, which comprises a shell, a sliding shell slidably connected in the shell, a top plate fixedly connected at the top of the shell, and a fixing mechanism comprising a sliding block fixedly connected in the top plate, the servo motor drives the threaded rod to rotate, and then the first connecting rod drives the first rotating block to slide, so that the first rotating block drives the limiting block to move, the limiting block drives the fixed rod to move, and the fixed rod drives the sliding block to move. And finally, the protective sleeve is driven to move outwards to be in contact with the magnetic ring, so that the magnetic ring is fixed, the position of the magnetic ring in the device can be ensured to be stable, the magnetic ring cannot move at will in the subsequent operation, test or use process, meanwhile, the device can adapt to magnetic rings of various sizes, and the adaptability of the device is improved.

The invention discloses a long-stroke proportional electromagnet which solves the problems that in the prior art, the displacement control precision of a proportional electromagnet is insufficient, and hovering at any position cannot be achieved. The device comprises a coil magnetic field unit and an armature magnetic field unit, the armature magnetic field unit is slidably arranged in the coil magnetic field unit, a reset assembly is arranged between the armature magnetic field unit and the coil magnetic field unit, the coil magnetic field unit is powered on, a coil generates a magnetic field, and the coil magnetic field unit and the armature magnetic field unit act to generate displacement. When the coil magnetic field unit is powered off, the reset assembly assists the armature magnetic field to return. The device is arranged in a modular nested mode along the axis, the coil magnetic field unit provides a controllable alternating magnetic circuit, the armature magnetic field unit achieves long-stroke stepless displacement under the magnetic coupling effect, and the reset assembly provides non-lagging return after power failure. The whole device forms a closed magnetic loop through an end cover-connecting rod system, has the functions of magnetic shielding and structure supporting, and is suitable for high-humidity and high-dust industrial environments.

The invention discloses a permanent magnet saddle type moving iron type structure torque motor for a servo valve. The permanent magnet saddle type moving iron type structure torque motor comprises magnetic steel, a magnetizer, a gap adjusting screw, an armature assembly, an armature rod, an elastic support and a baffle. The two magnetic steels and the two magnetizers are integrated together to form a closed magnetic loop; a hollow cylinder structure is designed between the two magnetizers to form a fixed magnetic gap; the armature rod is mounted in a hollow cylindrical magnetic gap space formed by the two magnetizers; the coil assembly is sleeved on the armature rod, and the magnetic field intensity and polarity of the control magnetic flux at the end of the armature rod are changed by inputting control currents with different magnitudes and directions to the coil assembly, so that the armature rod is controlled to rotate anticlockwise or clockwise, and the baffle at the lower end of the lower armature rod is driven to deflect. According to the structure, the requirement for the control precision of the size of the magnetic steel is not high, the magnetic gap is achieved through the fine-tooth magnetic gap adjusting screw, adjustment is easy and convenient, parts do not need to be disassembled and assembled repeatedly when the magnetic gap is adjusted, continuous adjustment can be achieved, part abrasion is reduced, and the service life is longer.

The utility model provides a magnetic ring fixing device, an electric appliance box and an air conditioner. The magnet ring fixing device comprises a base; the clamping structure is arranged on the base, and a clamping space used for fixing a magnetic ring is defined by the clamping structure and the base together. According to the magnetic ring fixing device, the electric appliance box and the air conditioner provided by the utility model, the first clamping structure is arranged on the base, so that the base can be disassembled and assembled on the preset structure, the base can be assembled when needed and disassembled when not needed, and the space utilization rate of the electric appliance box is improved. Meanwhile, the second clamping structure is matched with the third clamping structure of the other magnetic ring fixing device in a clamping mode, stacking of the two magnetic ring fixing devices is achieved, the number of fixed magnetic rings can be increased, wires of the strong current and wires of the weak current can be separated according to the layout of the strong current and the weak current, and mutual interference of the strong current and the weak current is prevented.

The application relates to the technical field of electric machines, in particular to a high-speed three-phase hollow cup electric machine and a manufacturing method thereof. The technical scheme is as follows: the electric machine comprises a motor shell, a coil support, three-phase hollow cup coils, a magnetic ring rotor and a rotating shaft, the three-phase hollow cup coils are made of three groups of flattened coils arranged in an equidistant circumferential array in a cross-laminated manner, wherein each group of flattened coils is made by flattening a coil wound in an odd number of layers, and after heat pressing and rounding, each group of flattened coils is wound into one turn, and the coil wire heads at the two ends are twisted together. The beneficial effect is that the three-phase hollow cup coils are obtained by adopting three groups of coils wound in an odd number of layers (preferably five layers) in a cross-laminated manner for rounding and shaping, the thickness of the hollow cup coils can be effectively improved, high-voltage, high-frequency and high-power control operation of the hollow cup coils is realized, the rotating speed and the power of the hollow cup electric machine are effectively improved, the weight is reduced under the same power, and the power density of the electric machine is improved by more than 30%.

The utility model discloses an open-close type prefabricated penetrating and winding magnetic ring, which relates to the technical field of manufacturing of white household appliances and comprises a first magnet, a second magnet is hinged to the outer surface of the first magnet through a pin shaft, the magnetic pole directions of the movable ends of the first magnet and the second magnet are opposite, and one end, far away from the second magnet, of the first magnet is fixedly connected with a connecting part. A containing cavity is formed in the inner wall of the second magnet. According to the utility model, the complete magnetic ring is set to be openable, so that the electric wire can be wound on the outer surface of the magnetic ring more simply, conveniently and quickly, and the magnetic ring can be closed after the winding of the electric wire is finished and the number of turns is confirmed, thereby avoiding the situation that the electric wire needs to be continuously and repeatedly inserted during winding; therefore, the probability of wrong winding is effectively reduced, the problem of labor hour waste of magnetic ring assembly is solved, the accuracy and the working efficiency of magnetic ring penetrating and winding are improved, and meanwhile the stability of the openable and closable magnetic rings during connection can be improved.