12results about How to "Improve the magnetic effect" patented technology

This application relates to the field of vest technology, disclosing a reflective warning vest, including a vest, an arc-shaped magnetic plate, a magnetic base, a warning light, a magnetic plate, a photovoltaic panel, a storage battery, and a control box. In use, in dimly lit environments at night, the warning light can be activated via the control box to serve as a warning, making it easily observable and alerting others to avoid the area. During this time, the storage battery continuously consumes its charge. In well-lit environments during the day, the photovoltaic panel utilizes the photovoltaic effect at the semiconductor interface to directly convert solar energy into electrical energy, which is then stored in the storage battery to charge it. This compensates for the nighttime power consumption and enables automatic battery charging. Therefore, there is no need to repeatedly remove and recharge the battery, saving time and effort and offering the advantage of ease of use.

This invention belongs to the field of permanent magnet motor technology, specifically relating to a dual-secondary modular permanent magnet flux switching linear motor and its manufacturing method, comprising a motor primary and a motor secondary, with an air gap structure provided between the motor primary and the motor secondary; wherein, the motor primary includes at least one motor primary module with identical structure; the motor primary module includes an iron core, a permanent magnet, and an armature coil; the permanent magnet is placed inside the iron core, and the permanent magnet is distributed in a double U-shape around the armature coil; the motor secondary adopts an axisymmetric double-sided secondary structure composed of an iron core.

The invention discloses a strong magnetic screwdriver bit extension rod with a telescopic unlocking function and belongs to the technical field of electric tools. The strong magnetic screwdriver bit extension rod specifically comprises an extension rod sleeve, a magnet and an extension rod handle, a tool head sleeve used for being connected with a tool head is arranged at the front end of the extension rod sleeve, a sliding limiting sleeve is arranged at the rear end of the extension rod sleeve, and the magnet is arranged at the front end of the extension rod handle; a partition structure or / and a magnetic conduction structure is also arranged between the magnet and the bottom of the tool head sleeve; and the connecting rod sleeve and the sliding limiting sleeve can synchronously and axially slide relative to the connecting rod handle and the magnet. In the process of replacing the screwdriver head, the magnet can be driven to the position away from the screwdriver head in a sliding mode and is kept at the position through the positioning structure, and therefore an operator can easily complete insertion and extraction of the screwdriver head with one hand. The sliding limiting sleeve is located at the rear end of the extension rod sleeve, the diameter of the magnet in the extension rod sleeve can be made to be large as much as possible, the magnetic attraction capacity is improved, the outer diameter of the front section of the extension rod sleeve can be reduced, and use in a small space is facilitated.

This invention discloses a low-leakage flux asymmetric magnetic pole rotor and magnetic pole motor, comprising rotor laminations with eight magnetic pole regions uniformly arranged on the laminations. A first, second, third, and fourth permanent magnet group are sequentially repeated twice on the eight magnetic pole regions. Multiple identical rotor laminations are stacked and welded to form a rotor core. The magnetic pole polarities of any two adjacent permanent magnet groups in the eight magnetic pole regions are opposite. The permanent magnetic field within a single magnetic pole is asymmetric, and the permanent magnetic fields of adjacent magnetic poles are also asymmetric, reducing cogging torque, torque pulsation, and vibration noise. Each magnetic pole consists of multiple layers of permanent magnet steel and a magnetically insulating air gap, resulting in significant magnetic focusing effect, high magnetic field strength, high power density, low air gap harmonic magnetic flux density, low hysteresis loss, low stator core eddy current loss, and high motor output efficiency.

This application discloses an energy-saving industrial cold storage, belonging to the field of industrial cold storage technology. The energy-saving industrial cold storage includes an insulated body and an energy-saving mechanism. The energy-saving mechanism is installed and fixed at one end of the insulated body and includes a sliding frame that slides with the top surface of the insulated body. A winding roller is rotatably connected inside the sliding frame, and an insulating cloth is wound on the winding roller. A counterweight is fixedly connected to the lower end of the insulating cloth, and a rotating rod is slidably engaged below the insulating cloth. The lower end of the counterweight has a triangular structure, and the rotating rod is rotatably connected to the sliding frame. In this invention, the sealing frame ensures the sealing of both ends of the insulating cloth. When the counterweight is inserted and slides down the sealing frame to the bottom, the insertion rod can be pulled out and then re-inserted into the insertion slots at both ends of the counterweight. Finally, it is inserted into the insertion slots on the sealing frame for magnetic fixation. Because the temperature of the cold storage is low, the magnetic fixation effect is good, avoiding loosening and other issues, making it simple and convenient to use.

The application provides a rotor core and a motor with the same. The rotor core is formed with a plurality of magnetic poles which are arranged at intervals along the circumference of the rotor core. The outer periphery of the cross section of each magnetic pole comprises a plurality of arc lines and a plurality of straight lines, and the plurality of arc lines and the plurality of straight lines are arranged alternately. The air gap magnetic field between the stator core and the rotor core is optimized, the torque ripple is reduced, the motor demagnetization resistance and the motor efficiency are improved. The stator tooth is opposite to the magnetic pole and comprises a tooth body and a tooth shoe. The tooth shoe comprises two tooth shoes which are arranged at the two radial sides of the tooth body respectively. The tooth body corresponds to the first arc line, and the tooth shoe corresponds to the straight line. The magnetic field in the region between the tooth body and the first arc line is the strongest, the magnetic field in the region between the stator slot and the second arc line is the weakest, and the magnetic field in the region between the tooth shoe and the straight line is in the middle. The position and size of the straight line can be adjusted to adjust the magnetic field in the region. The motor iron loss is greatly reduced, the magnetic steel utilization rate is improved, and the motor harmonic loss is reduced.

This invention discloses an elevator counterweight frame, comprising a frame, a sheave, and a counterweight block. The frame has a space for accommodating the counterweight block. At least one sheave is provided, mounted on the counterweight upper beam at the top of the frame and rotatably connected to it. A power generation module is located on one side of the sheave body. The power generation module includes a stator frame, which is fitted onto and rotatably connected to the sheave's axle. Multiple winding posts are evenly distributed around the outer side wall of the stator frame, with coils wound around them. Multiple permanent magnets are evenly distributed around the edge of the sheave body, corresponding to the winding posts. Strain gauges are mounted on the counterweight upper beam. In this invention, the strain gauges and the power generation module work together to monitor the weight of the counterweight block, while the power generation module generates its own power to supply the strain gauges. Throughout the process, the mechanical energy of the sheave is converted into electrical energy, achieving self-sufficiency in electrical energy without the need for an external power source.

The utility model discloses a rotor assembly and a motor, and relates to the technical field of motors, the rotor assembly comprises a rotor yoke, a plurality of radial magnetic shoes and a plurality of circumferential magnetic shoes, and the rotor yoke is configured to be annular and rotates around a rotation axis; the plurality of radial magnetic shoes are connected to the inner side of the rotor yoke and configured to be magnetized in the radial direction of the rotating axis, and the plurality of radial magnetic shoes are arranged at intervals in the circumferential direction of the rotating axis; the plurality of circumferential magnetic shoes are connected to the inner side of the rotor yoke and configured to be magnetized in the circumferential direction of the rotating axis, and the plurality of circumferential magnetic shoes are located between every two adjacent radial magnetic shoes respectively; one side surface, facing the rotating axis, of each radial magnetic shoe comprises a first arc surface, and a first surface and a second surface which are connected to the two sides of the first arc surface in the circumferential direction, the distance between the first surface and the rotating axis is gradually increased in the direction away from the first arc surface, and the distance between the second surface and the rotating axis is gradually increased in the direction away from the first arc surface. The rotor assembly of the utility model can enhance the electromagnetic performance and improve the mute effect.

The invention relates to the technical field of motors, in particular to a high-magnetism-gathering anti-saturation less rare earth permanent magnet and electromagnetic salient pole hybrid excitation motor which comprises a front end cover, a machine shell, a rear end cover, a rotating shaft, a stator and a rotor. The rotor is composed of a rotor iron core, neodymium iron boron permanent magnet steel, ferrite permanent magnet steel and an excitation winding, an even number of salient poles are uniformly distributed on the rotor iron core, arc-shaped contours are processed on two sides of a pole body of each salient pole to form a gourd-like excitation winding groove, the excitation winding is wound in the gourd-like excitation winding groove, and the excitation winding is wound in the excitation winding groove. Magnetic steel grooves for placing ferrite permanent magnet steel are formed in the outer sides of the gourd-like excitation winding grooves; and magnetic steel grooves for placing neodymium iron boron permanent magnet steel and arc-shaped magnetic isolation grooves are formed in the salient pole shoes. According to the invention, the magnetism gathering performance of the salient pole rotor can be effectively improved, the air gap flux density waveform can be improved, the distortion rate can be reduced, and the design of the gourd-like excitation winding grooves can effectively reduce the magnetic circuit saturation of the rotor and improve the torque performance of the motor.

This utility model discloses a formula preparation device, which includes a housing, a bottle holder, and a magnetic assembly. The housing has a receiving groove, and at least a portion of the bottle holder is disposed within the receiving groove. The magnetic assembly includes a magnetic mating component and a magnetic component. The magnetic mating component and at least a portion of the magnetic component are arranged opposite to each other in a first direction. One of the magnetic mating component and the magnetic component is disposed on the bottle holder, and the other of the magnetic mating component and the magnetic component is disposed on the housing. The magnetic mating component and the magnetic component magnetically engage to make the bottle holder detachable relative to the housing. The bottle holder in the formula preparation device of this utility model is easy to disassemble, not easily damaged, and provides a good user experience.

This utility model discloses a magnetically attached triaxial high-frequency digital vibration sensor, relating to the field of digital vibration sensor technology. It aims to provide a triaxial high-frequency digital vibration sensor that can be magnetically attached to a product under test. The sensor includes a sensor body, a mounting frame, and an adsorption mechanism. The mounting frame is fixed to the sensor body, and the adsorption mechanism is mounted on the mounting frame. The adsorption mechanism includes an electromagnet assembly for adsorbing a compressor, thereby fixing the sensor body to the compressor. The adsorption mechanism also includes an adsorption block adapted to the compressor. A connector is provided between the electromagnet assembly and the adsorption block to connect the two. In this application, the sensor body can be directly magnetically attached to the compressor via the electromagnet assembly, facilitating the connection between the sensor body and the compressor. The installation method is simple and convenient, saving time and effort, and greatly improving detection efficiency.