40results about How to "Increase the magnetic field density" patented technology

The invention discloses a plastic electronic horn. A common car horn uses an iron shell, and an iron gland bush is riveted with a steel membrane to form a sound-producing device. The horn with the structure has high cost, heavy weight, complex manufacture craft, high energy consumption, common sound effect and not high enough sound level. The invention comprises a coil (4); the coil (4) is linkedwith an iron bowl (6); the iron bowl (6) is linked with a plastic shell (5); and the opening of the iron bowl (6) is linked with a steel vibrating sheet (3). The invention relates to an electronic horn used for a car.

The invention discloses a rotor of a disk-type permanent magnet motor and a disk-type permanent magnet motor applying the same. The rotor includes a first rotor iron core, a second rotor iron core and a magnetic tile, and the first rotor iron core includes a first annular ring and the first magnetic conductive block, two adjacent first magnetic conductive blocks form a first groove; the second rotor core includes a second annular ring and a second magnetic conductive block, and two adjacent second magnetic conductive blocks form a second groove A left magnetic steel slot and a right magnetic steel slot are formed between the two sides of the second magnetic conductive block and the adjacent two first magnetic conductive blocks, and the first top surface of the second magnetic conductive block is lower than the phase The second top surfaces of the two first magnetic conductive blocks are adjacent to form the top surface magnetic steel groove; the magnetic tile includes the top magnetic steel, the left magnetic steel and the right magnetic steel, the top magnetic steel is embedded in the top magnetic steel groove, and the left magnetic steel is embedded in the top magnetic steel groove. The side magnet steel and the right magnet steel are embedded in the left magnet steel slot and the right magnet steel slot; the hybrid magnetization of the rotor is realized, the magnetization effect of the motor is improved, the number of assembled parts of the rotor is reduced, and the difficulty of the rotor manufacturing process is reduced. , improve the production efficiency of the rotor.

Disclosed in the present invention are a vibrating sound production apparatus and an electronic product. The apparatus comprises a housing, a fixed piece, and a driving assembly. At least a portion of the housing is configured to vibrate relative to the fixed piece. The driving assembly comprises at least one wire coil and a Halbach magnet, the wire coil being fixedly connected to the fixed piece and the Halbach magnet being fixedly connected to the housing, or the Halbach magnet being fixedly connected to the fixed piece and the wire coil being fixedly connected to the housing. The plane on which the wire coil is located is perpendicular to the portion of the housing used for vibration, the wire coil is positioned at a side portion of the Halbach magnet, an annular end surface of the wire coil faces the Halbach magnet, and the wire coil passes through the strengthened region of the magnetic field of the Halbach magnet.

The invention relates to a DC motor, in particular to a ship propulsion DC motor. According to the technical solution provided by the present invention, the ship propulsion DC motor includes a left end cover arranged at the left end of the machine base, and a right end cover arranged at the right end of the machine base, the left end of the main shaft is installed on the left end cover by the first bearing, and the main shaft The right end is installed on the right end cover by the second bearing; and, the right end of the main shaft protrudes from the right end cover to form a shaft extension end; the rotor is installed on a section where the main shaft is located in the base, and the inner wall of the base corresponds to the rotor. Stator, the stator surrounds the periphery of the rotor; it is characterized in that: a pressure plate is connected to the left end of the main shaft, an annular angle ring is arranged between the left side of the inner ring of the first bearing and the pressure plate, and the first bearing The right side is provided with a bearing inner cover fixed on the inner wall of the left end cover, and the center of the bearing inner cover has a shaft hole. The direct current motor can solve the power problem of electric propulsion of domestic small work boats.

The invention relates to an axial flux permanent magnet motor used for a high-voltage circuit breaker and its use, comprising a first stator, a first rotor, a second stator, a second rotor and a third stator arranged in sequence along the axial direction, A sandwich structure with three stators and two rotors is formed; iron cores are arranged on the outside of the first stator and the third stator; the second stator is a double-layer structure, and an iron core is arranged in the middle; the first rotor and the second rotor have the same structure, Both include nine brushless windings of three phases arranged in the circumferential direction, the nine brushless windings form a ring, and a magnetic field is generated during rotation. The invention adopts the axial magnetic field permanent magnet synchronous motor as the driving motor of the high-voltage circuit breaker, which reduces the saturation degree of the iron core, thus increases the output torque and reduces the moment of inertia, and further improves the voltage level of the high-voltage circuit breaker driven by the motor. The fixed material density of the winding is relatively low, which can improve the dynamic response of the motor-driven high-voltage circuit breaker.

The invention belongs to the field of motors and provides an axial-radial excitation permanent magnet brushless motor. The motor comprises a first axial rotor, a second axial rotor, a radial rotor and a stator component, the stator component comprises a fixing shaft, a radial stator support, a first axial stator, a second axial stator, a radial stator, a first folding winding and a second folding winding, the radial stator support is fixed on the fixing shaft, and the first axial stator, the second axial stator and the radial stator are fixed on the radial stator support. The first axial rotor and the second axial rotor are arranged at two ends of the fixing shaft in a penetrating mode and oppositely arranged, and permanent magnets are arranged in the rotors respectively. The first axial rotor, the second axial rotor and the radial rotor form an enclosed cavity, and the stator component is fixed on the fixing shaft in the enclosed cavity. By means of the axial-radial excitation permanent magnet brushless motor, the space in the motor can be utilized to the hilt, the magnetic field intensity distribution of the motor is improved, and thereby the efficiency of the motor is improved.

Disclosed is a superconductive synchronous motor. A superconductive coil is fixed in a cylindrical sealed rotor inner cavity; a sealed outer cover covers the rotor inner cavity; a vacuum nozzle is arranged on the outer cover; the outer cover is fixed on a stator shell through a bearing; one end of the rotor inner cavity and one end of the outer cover are connected with a rotating connector; the other end of the rotating connector is simultaneously connected with a refrigerant feeding pipe and a refrigerant discharging pipe; the other end of the rotor inner cavity is fixedly connected with the other end of the outer cover; two leading-out ends of the superconductive coil are connected with the inner end of a copper sheet; the copper sheet penetrates in the rotor inner cavity and the outer end of the outer cover and then is connected with a power source through a power line; and the two leading-out ends of the superconductive coil are also connected with a superconductive switch. According to the specific connection structure of the superconductive synchronous motor, a superconductive wire of the superconductive switch is connected with the two leading-out ends of the superconductive coil; a section of the superconductive wire clings to a heater; and a power line of the heater penetrates in the rotor inner cavity and the outer cover and then is connected with a power source of the heater. The superconductive synchronous motor is high in reliability, high in efficiency and long in service life.

The invention relates to a wind power generator, which comprises a coil assembly, magnetic steel assemblies, a rotating shaft and an impeller, wherein the magnetic steel assemblies are arranged at two sides of the coil assembly; the coil assembly is shaped as a disc, and the disc-shaped coil assembly is provided with a circuit for cutting magnetic induction lines; each magnetic steel assembly comprises magnetic steel and a magnetic yoke which are respectively shaped as a disc, a plurality of magnetic poles are uniformly arranged on each magnetic steel at intervals, each magnetic steel is arranged at one side of each magnetic yoke, one surface, where each magnetic steel is arranged, on each magnetic yoke, faces to the coil assembly; the rotating shaft passes through the coil assembly and the circle centers of the magnetic steel assemblies at two sides of the coil assembly, and the circle center of the magnetic yoke of each magnetic steel assembly is connected with the rotating shaft; and the impeller is connected to the rotating shaft. The wind power generator disclosed by invention has the advantages of high magnetic field density, high uniformity, capability of realizing multigroup input and free combination of coils, high wind power utilization rate and low start wind power.