1810results about "Permanent magnets" patented technology

The invention discloses a single-coil winding type four-eight-pole composite iron system for beam homogenization. The composite iron system comprises a composite magnet current control device, a composite magnet main power supply and four-pole / eight-pole composite iron, the quadrupole / octupole composite iron has eight pole heads, and only one type of excitation coil is wound on each pole head; the current value of the A-type excitation coil is an absolute value of a quadrupole magnetic field excitation current value plus an octupole magnetic field excitation current value; the current value of the B-type excitation coil is an absolute value obtained by subtracting an octupole magnetic field excitation current value from a quadrupole magnetic field excitation current value; the quadrupole / octupole composite iron is used for simultaneously generating a dominant quadrupole magnetic field and an octupole magnetic field, so that the effects of quadrupole iron and octupole iron can be simultaneously realized by only installing one transmission element; the excitation coil structure of the quadrupole / octupole composite iron composite magnet is improved, and only one excitation coil is wound on each pole head, so that the size of the coil structure can be reduced, and the construction cost is reduced.

The present invention provides a magnet mount for securely holding a firearm. The magnet mount includes a side mounting plate, one or more magnets are affixed to the side mounting plate, and a firearm holder. The firearm includes (a) a firearm seat, (b) a connector extending upwardly from the firearm seat and connecting to the side mounting plate, and (c) a trigger shield extending upwardly from the firearm seat. The trigger shield is configured for blocking at least 50% of a trigger accessing area of the firearm to prevent accidental discharge. Also provided is a method of securely holding a firearm using the magnet mount.

The present disclosure discloses a suction cup holder, and relates to the technical field of mobile phone holders. The suction cup holder includes a fixed seat and a magnetic suction seat; several suction cups are fixed on a bottom surface of the fixed seat; the fixed seat is circular; a first circular groove is provided on a top surface of the fixed seat; a mirror is fixed in the first circular groove; the magnetic suction seat is annular; the magnetic suction seat and the fixed seat are rotatably connected; the magnetic suction seat can sleeve the fixed seat; an annular groove is provided on the magnetic suction seat; an opening of the annular groove faces away from the suction cups; and an annular magnet is fixed in the annular groove.

An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed portion, a movable portion, a driving assembly, and a first weighting element. The movable portion is arranged with the fixed portion in a main axis, and the movable portion is movable relative to the fixed portion. The driving assembly is used for driving the movable portion to move relative to the fixed portion. The first weighting element is disposed on the driving assembly for stabilizing the driving assembly.

The invention relates to a transfer method of a Micro LED packaging structure and a Micro LED display device, and relates to the technical field of semiconductor display. According to the transfer method of the Micro LED packaging structure, the ratio of the thickness of a packaging layer subjected to planarization processing to the height of a Micro LED unit is set to be larger than 10, then four symmetrically-distributed concave cavities are formed in the packaging layer of each Micro LED packaging array, the ratio of the depth of the concave cavities to the thickness of the packaging layer is 0.3-0.5, and the ratio of the depth of the concave cavities to the thickness of the packaging layer is 0.3-0.5. The distance between every two adjacent concave cavities is 800-3000 microns, through the process steps, the large-size magnetic component can be formed, the preparation process of the magnetic component is simplified, and the magnetic attraction force of the magnetic component can be improved.

A cigar holder can include an annular body defining an inner surface and an outer surface; the annular body comprising: a protrusion extending outward in a radial direction from a surrounding portion of the outer surface with respect to an axis of the annular body; and a plurality of protuberances, each of the plurality of protuberances extending in a radial direction from a surrounding portion of the inner surface with respect to the axis of the annular body; and a magnet coupled to the annular body. A cigar holder can alternatively include an annular body defining an inner surface and outer surface and formed from an elastomeric material, the annular body comprising a protrusion extending from the outer surface of the annular body; and a magnet coupled to the annular body.

A holder is configured to be detachably secured to an electronic device which includes a first magnetic attraction member. The holder includes a case and a second magnetic attraction member mounted to the case. The second magnetic attraction member is configured to be attracted to the first magnetic attraction member in a first direction. The second magnetic attraction member includes a first magnet layer extending along a circumferential direction; and a second magnet layer disposed around the first magnet layer in the circumferential direction, the first magnet layer and the second magnet layer being separately formed. The first magnet layer and the second magnet layer are polarized in an axial direction which is parallel to the first direction and perpendicular to the circumferential direction, and polarization directions of the first magnet layer and the second magnet layer are opposite to each other.

A magnetic data cable is disclosed, including cable body and a data interface connected to both ends of the cable body. The cable body includes a cored wire group and an external protective layer wrapped outside of the cored wire group, a flexible magnetic strip is provided in the outer protective layer, and the flexible magnetic strip is located alongside of the cored wire group and extends parallel to the cored wire group. It is convenient to adjust diameter of the coil after the data cable has been coiled so as to facilitate storing of the data cable, and it is easy to operate.

Magnetic coupling devices are disclosed having magnetic field sensors. The magnetic coupling device may include degaussing coils wrapped about pole extension shoes of the magnetic coupling device.

The present application relates to the technical field of bendable circuit boards and provides a magnetic assembly and assembly method thereof, a linear motor, a camera, and an electronic device, capable of resolving the problems of low connection reliability between two repelling magnets in magnetic assemblies and low assembly efficiency of magnetic assemblies in related technologies. The magnetic assembly includes a magnet unit, which includes multiple magnets, wherein two adjacent and repelling magnets are welded together. The present application can be used in electronic devices such as mobile phones.

The invention provides an electro-permanent magnet uncoiling composite magnetic field multi-mode adjustment system which comprises a data acquisition and preprocessing module, a graph structure construction module, a dynamic prediction module, a historical matching prediction module, a magnetic force adjustment strategy module and an electro-permanent magnet execution mechanism. The data acquisition module constructs a multi-modal data cube through a temperature field, deformation, stress and magnesium powder concentration sensing network; the graph structure module discretizes the steel strip coil into a node network and calculates a mechanical association edge weight; the dynamic prediction module updates node features through the graph neural network and then outputs a sliding probability vector through the LSTM network; the historical matching module screens similar working conditions based on a dynamic time warping algorithm and generates magnetic force preset parameters; the strategy model fuses the probability vector and a preset parameter to generate a partition magnetic matrix; and the execution mechanism realizes millisecond-level magnetic field regulation and control through the reconfigurable magnetic pole array. According to the system, the magnetic field control precision can be improved, the interlayer sliding risk is reduced, and the self-adaptive adjustment effect is achieved.

A connector structure in which a male connector and a female connector are easily coupled to each other. The connector structure includes a coupling part, a housing, and a first removing tool. The coupling part is coupled to the female connector in a coupling mode and separated from the female connector in a separating mode. The housing includes a first magnet on a first surface among surfaces surrounding the coupling part and is configured to attract the female connector by using magnetic force of the first magnet. The first removing tool is configured to rotate a second magnet in the separating mode so as to weaken the magnetic force.

The utility model discloses an arrangement structure of magnets, and relates to the technical field of Halbach array magnet assembly, a plurality of first single magnets are arranged at intervals along the left-right direction, two second single magnets are embedded between adjacent first single magnets, the length and the width of each second single magnet are half of those of each first single magnet, the magnetic pole direction of each first single magnet is upward, and the magnetic pole direction of each second single magnet is upward. The magnetic pole of the second single magnet located on the left side deflects by 45 degrees towards the upper left, and the magnetic pole of the second single magnet located on the right side deflects by 45 degrees towards the upper right; the length and the width of the third single magnets are the same as those of the first single magnets, the arrangement mode of the third single magnets is the same as that of the first single magnets, the two fourth single magnets are embedded between the adjacent third single magnets, the length and the width of each fourth single magnet are half of those of each third single magnet, and the magnetic pole direction of each third single magnet faces upwards; the magnetic pole of the fourth single magnet located on the left side deflects by 45 degrees towards the upper left, and the magnetic pole of the second single magnet located on the right side deflects by 45 degrees towards the upper right. The magnetic field generated by the utility model is more uniform.

The invention discloses a positioning electromagnetic magnetic needle device based on permanent magnet bias and application thereof, and relates to the technical field of chip mass transfer, the positioning electromagnetic magnetic needle device comprises a magnetic field generation system and a chip transfer system, the magnetic field generation system comprises permanent magnet steel, an electrified solenoid coil, a magnetic conductive layer and a magnetic conductive magnetic needle, the electrified solenoid coil surrounds the periphery of the permanent magnet steel, and the magnetic conductive layer is arranged on the periphery of the chip transfer system; the magnetic conductive layer is arranged on the upper surface of the permanent magnet steel, the magnetic conductive magnetic needles are uniformly distributed on the upper surface of the magnetic conductive layer in an array manner, the chip transfer system comprises a chip transfer substrate and a plurality of LED light-emitting chips, a plurality of welding spots are arranged on the transfer substrate and correspond to the magnetic conductive magnetic needles, and the LED light-emitting chips are provided with N-type nickel-plated electrode pins and P-type electrode pins. According to the positioning electromagnetic magnetic needle device based on permanent magnet bias and the application of the positioning electromagnetic magnetic needle device, the magnetic induction density of the magnetic conductive magnetic needle is accurately regulated and controlled by means of the magnetic field which is generated by the electrified solenoid coil and is opposite to the permanent magnetic field, and accurate fixing of a chip at a welding spot position of a transfer substrate is achieved.

The invention discloses a magnetic array adsorption module, a design method thereof and a wall-climbing robot. The magnetic array adsorption module comprises a first magnetic assembly and a second magnetic assembly, the first magnetic assembly comprises a plurality of first magnets distributed in an array mode in the first direction and the second direction, every two adjacent first magnets are spaced and opposite in magnetism in the third direction, and every two of the first direction, the second direction and the third direction are perpendicular to each other; the second magnetic assembly comprises a plurality of second magnets, each second magnet is connected with two adjacent first magnets, an air gap exists between the two adjacent second magnets, and the magnetism of the two adjacent second magnets is opposite in the first direction or the second direction. By designing the magnetic array adsorption module arranged in the circumferential direction, the permanent magnet utilization rate of the magnetic array adsorption module is superior to that of a linear classic Halbach magnetic array adsorption module under the same magnet volume, and magnetic attenuation caused by the end effect is improved. And meanwhile, the air gap can be used as a replacement space of the mounting hole, so that magnetic loss caused by opening a hole in the magnet is avoided.

The utility model discloses a novel flexible machine core which comprises an integrated frame body, a track assembly and a massage machine core, the track assembly is arranged in the middle of the integrated frame body, the massage machine core is arranged on the track assembly in a walking mode, and an elastic device is arranged between the integrated frame body and the track assembly. According to the utility model, the integrated frame body and the track assembly are connected through the elastic device, so that the massaging machine core can dynamically adjust the angle and the pressure, and the massaging comfort is obviously improved; the design of a track assembly integrating a rack and a conductive strip synchronously realizes power transmission and power supply, reduces the risk of cable winding, and the sliding fit of a guide rib and a reinforcing rib effectively prevents the movement from shifting and improves the movement precision; the arc bumps and the side arc surface bulges reduce the contact area and reduce the friction coefficient, and the rack pressing plate and the track pressing plate are dual-fixed, so that the risk of derailing is avoided; the fixing plate is matched with the magnet to accurately detect the position of the machine core, and automatic reciprocating motion is achieved.

A magnetic electronic cigarette and its combined electronic cigarette, which comprise an electronic cigarette unit, wherein the electronic cigarette unit further comprises a shell with an atomizing main part arranged inside. The shell is provided with a magnetic component that be magnetically attached to external objects. Users can combine at least two different flavors of electronic cigarettes through magnetic components, or only smoke a single flavor of electronic cigarette based on needs. At the same time, a wireless charging is performed through wireless coils, eliminating the trouble of entangled charging cables.

A closure device includes a first magnet and a housing with a second magnet positioned therein. The first magnet is configured to be position in a first object and the housing is configured to be positioned in a second object. The housing has a top end and at least one adjustment mechanism connected to the housing that moves the second magnet in at least one translational direction or at least one rotational direction relative to the top end of the housing. The movement of the second magnet relative to the top end of the housing adjusts the position or orientation of the second magnet relative to the first magnet to alter a magnetic force between the first magnet and the second magnet when the first magnet is positioned proximate the top end of the housing.

The present invention discloses an ultra-thin flexible magnetic adsorption eyelash magnetic sheet and a preparation method thereof, which relates to the technical field of magnetic adsorption eyelashes. Each group of eyelash magnetic sheets is composed of upper and lower magnetic sheets. Opposite adsorption magnetic poles are arranged on the two magnetic sheets respectively, and the magnetism of the opposite adsorption magnetic poles shows a gradient distribution of strong at the edge and weak in the middle on the magnetic sheet. The raw materials of the magnetic sheet include samarium iron nitride magnetic powder and polypropylene. Samarium iron nitride is non-toxic and resistant to sweat corrosion, and polypropylene meets the cosmetic grade standard, improving the biological safety and solving the problem of unreliable materials for traditional magnetic adsorption eyelashes. The magnetic sheet is designed as an opposite adsorption magnetization structure, and the upper and lower magnetic sheets can achieve firm adsorption, overcoming the defect of easy falling off of traditional magnetic adsorption eyelashes. The thickness is only 0.14 - 0.24 mm, and it does not break after being folded more than 500 times, conforming to the curvature of the eye, being comfortable to wear, and avoiding the defect of heaviness of traditional magnetic adsorption eyelashes.

An electronic device is disclosed, including: a first housing, a second housing, a folding housing that pivotably connects the first housing and second housing, a flexible display spanning the first, second and folding housings, a printed circuit board (PCB), a first camera module at least partly visible through a surface of the second housing, a first magnet disposed in the first housing, a second magnet disposed in the second housing, and a hall sensor disposed on the PCB, the hall sensor configured to detect magnetic flux caused by motion of the first and / or second magnet in folding and unfolding of the electronic device so as facilitate determination of a configuration state of the electronic device.

Electromechanical lock and method are disclosed. The lock includes: a movable permanent magnet to move between a first position and a second position; a stationary permanent semi-hard magnet; and an electrically powered magnetization coil positioned adjacent to the stationary permanent semi-hard magnet to switch a polarity of the stationary permanent semi-hard magnet between a first magnetization configuration and a second magnetization configuration. The first magnetization configuration of the stationary permanent semi-hard magnet moves the movable permanent magnet to the first position. The second magnetization configuration of the stationary permanent semi-hard magnet moves the movable permanent magnet to the second position. A magnetic axis of the movable permanent magnet is side by side with a magnetic axis of the stationary permanent semi-hard magnet.

The invention relates to the technical field of robots, in particular to an inspection robot mother ship split robot folding and unfolding manipulator system which comprises an inspection vehicle base and a manipulator arranged on the inspection vehicle base. The manipulator comprises a telescopic mechanism; the inspection vehicle base is provided with a folding mechanism; the system further comprises a split robot and a storage bin for containing the split robot. An access channel is arranged above the storage bin; an elastic mechanism is arranged at the bottom of the storage bin; a pressing mechanism is arranged above the access channel; the in-out channel is provided with a retracting opening, and the retracting opening faces the direction opposite to the direction in which the folding mechanism folds the telescopic mechanism. The access channel is further provided with a push-pull mechanism, and the push-pull mechanism is provided with an electric locking device. A Halbach permanent magnetic mechanism is arranged on the front side of the split robot; an electromagnetic induction coil is wound outside the middle permanent magnet and the yoke, and the electromagnetic induction coil generates magnetism opposite to the middle permanent magnet after being electrified. The inspection robot is prevented from rolling over, and the split robot is prevented from falling.

The invention discloses an adjustable ultra-short period permanent magnet undulator magnet pole clamping device and an undulator. The device comprises a plurality of unit structures, and each unit structure corresponds to one period of a periodic magnetic field of the undulator and is used for clamping and fixing a magnet and a magnetic pole required by one period in the periodic magnetic field; each unit structure comprises an M1 unit and an M3 unit; wherein the M1 unit clamps an independent magnetic pole; the M3 unit clamps two magnets and one magnetic pole; a magnetic pole height adjusting structure is arranged at the top of the side wall of the clamping structure of the M3 unit; first connecting tools are arranged on the two sides of the clamping structure of the M3 unit and used for being fixedly connected with a supporting beam. Second connecting tools are arranged on the two sides of the clamping structure of the M1 unit and used for being connected with the supporting beam and adjusting the position of the magnetic pole in the height direction by adjusting the second connecting tools. The undulator breaks through the technical bottleneck that the period length of the permanent magnet insert cannot be reduced to the millimeter level, and the performance of the undulator is greatly improved.

The invention relates to the technical field of high-energy physical equipment, and discloses a vacuum box of an undulator and a manufacturing method of the vacuum box. A vacuum cartridge of an undulator includes a first half-shell and a second half-shell. The first half shell is provided with a first beam groove extending in the length direction of the first half shell. The second half shell is provided with a second beam groove extending in the length direction of the second half shell, and the first half shell and the second half shell are arranged independently. The first half shell is provided with a first welding structure, the second half shell is provided with a second welding structure, the first welding structure and the second welding structure are welded, and the second beam groove and the first beam groove form a beam channel. According to the undulator, the vacuum box of the undulator is arranged to be of the split type structure formed by welding and connecting the first half shell and the second half shell, so that the first half shell and the second half shell can be machined in the manufacturing process, and the machining precision is guaranteed. Moreover, by arranging the first welding structure and the second welding structure which are used for welding, the influence of welding heat and welding stress on the size and form and location tolerance of the vacuum box of the undulator in the welding process is reduced.

The invention provides a linear Halbach array based on a non-uniform permanent magnet and a preparation method of the linear Halbach array, and belongs to the field of permanent magnets. The method comprises the steps that the interior of a mold is divided into an area A1, an area A2 and an area B, wherein the area A1 and the area A2 are symmetrical on the two sides and concave in an arc shape; the B area is loosely filled with low-grade magnetic powder, and the A1 area and the A2 area are loosely filled with high-grade magnetic powder; carrying out compression molding and magnetization orientation to obtain a neodymium iron boron pressed blank; the neodymium-iron-boron pressed blank is subjected to heat treatment after being demolded to obtain the non-uniform permanent magnet, and the heat treatment comprises preheating, gradient sintering of first heating and then cooling, and tempering treatment; and (2n + 3) groups of non-uniform permanent magnets are adhered and fixed by using magnet glue to obtain the linear Halbach array. According to the non-uniform permanent magnet, the non-uniform permanent magnet is manufactured by adopting different marks of magnetic powder partition mold pressing, region strengthening is carried out on the edge, the demagnetization effect of the magnet at the corner angle under the extreme condition is reduced, the local intrinsic coercive force is improved, the service performance of the magnet is enhanced, and the performance of a Halbach array assembled by the non-uniform permanent magnet is promoted to be more excellent.

The invention discloses a quadrupole / octupole composite iron system for beam homogenization. The composite iron system comprises a composite magnet current control device, a composite magnet main power supply and quadrupole / octupole composite iron, the composite magnet current control device is used for controlling a composite magnet main power supply to output quadrupole field coil current and octupole field coil current of quadrupole / octupole composite iron. The quadrupole / octupole composite iron is used for simultaneously generating a dominant quadrupole magnetic field and an octupole magnetic field, so that the effects of quadrupole iron and octupole iron can be simultaneously realized by only installing one transmission element; according to the invention, a quadrupole magnetic field and an octupole magnetic field are generated in the aperture of the composite iron, focusing and homogenization of beam envelope are realized at the same time, the number of transmission elements can be reduced, the length of a transmission line can be shortened, and the construction cost of the beam transport line is reduced. The problem that traditional quadrupole iron and octupole iron cannot be simultaneously installed at the maximum beam envelope position due to the space problem and cannot play a great role of a magnet is solved.