403 results about "Repulsion force" patented technology

A banknote transport system 10 includes: an air blowing tube 100 that forms an air flow path 101; a moving body 200 that travels inside the air blowing tube while receiving an air flow within the air blowing tube; a transport path 401 (a transport tube 400) having at least a portion arranged along the air blowing tube to be adjacent to the air blowing tube; and a transport body 500 configured to be able to retain a banknote and traveling inside the transport path. The moving body includes a moving body magnet 213, and the transport body includes a transport body magnet 523. The banknote transport system moves the transport body in conjunction with movement of the moving body receiving the air flow due to attraction and / or repulsion based on a magnetic force applied between the moving body magnet and the transport body magnet.

A visual inspection device for surface defects of plastic bottles relates to the technical field of detecting materials by utilizing optical means and comprises a conveying mechanism, a lateral clamping mechanism, a visual inspection module and a rejecting mechanism. The suction cup assembly capable of sliding up and down is arranged in the adsorption hole, and the repulsive force of the first magnet and the second magnet is utilized, so that the vacuum suction cup can automatically adjust the height, be attached to an irregular surface and form effective sealing according to the shape of the bottle bottom (such as a flat bottom, a convex bottom and an inclined surface), and the problem that a traditional fixed plane adsorption hole cannot be matched with a special-shaped bottle bottom is solved; the plastic bottles are prevented from falling or deviating due to inertia during high-speed conveying, and the stability and the accuracy in the detection process are improved.

The invention provides a loudspeaker and electronic equipment. The loudspeaker comprises a vibration system which comprises a vibrating diaphragm and a voice coil, and the voice coil is fixed on the vibrating diaphragm; the magnetic circuit system and the vibration system are arranged in a spaced mode, the magnetic circuit system comprises a magnetic circuit assembly and an upper magnetic conduction assembly, and the upper magnetic conduction assembly is located on the side, close to the vibrating diaphragm, of the magnetic circuit assembly and fixedly connected with the magnetic circuit assembly; the adjusting magnet is fixed to the vibration system, at least part of the adjusting magnet is located in the magnetic gap of the upper magnetic conduction assembly, the polarization direction of the adjusting magnet is parallel to the vibrating diaphragm, the adjusting magnet is provided with a first end and a second end which are oppositely arranged in the polarization direction, and the first end is close to the upper magnetic conduction assembly relative to the second end; repulsive force is generated between the first end and the upper magnetic conductive assembly. The loudspeaker provided by the embodiment of the invention can meet the rigidity requirement of a vibration system while having better low-frequency performance, and the swing of the voice coil during movement is smaller.

A reflection module includes a housing, a guide member disposed to be relatively rotatable on the housing, based on a first rotation axis, and a holder disposed to be relatively rotatable on the guide member based on a second rotation axis and having a reflection member mounted therein, wherein a first pulling magnet is disposed on one of the guide member and the holder, a second pulling magnet facing the first pulling magnet is disposed on the other of the guide member and the holder, and both attractive force and repulsive force are applied between the first pulling magnet and the second pulling magnet.

A reflection module includes a housing, a guide member disposed to be relatively rotatable on the housing, based on a first rotation axis, and a holder disposed to be relatively rotatable on the guide member based on a second rotation axis and having a reflection member mounted therein, wherein a first pulling magnet is disposed on one of the guide member and the holder, a second pulling magnet facing the first pulling magnet is disposed on the other of the guide member and the holder, and both attractive force and repulsive force are applied between the first pulling magnet and the second pulling magnet.

The invention belongs to the technical field of flange machining, and particularly relates to a multi-shaft drilling device for flange machining, the multi-shaft drilling device comprises a to-be-machined flange body, a drilling platform, flange clamps and a drilling bit, at least two evenly-distributed moving grooves are formed in the top of the drilling platform, and each moving groove is internally and movably provided with one flange clamp; the flange body to be machined is arranged in the center of the top of the drilling platform and located between the flange clamps. According to the device, when the linear moving frame moves downwards, the vertical frame drives the first piezoelectric plate to move downwards until the first piezoelectric plate is in contact with the second piezoelectric plate, so that the switch electromagnetic block is electrified, and then the magnetic sliding block drives the pushing frame to slide in the direction away from the switch electromagnetic block under the action of magnetic repulsive force of the switch electromagnetic block and the magnetic sliding block, that is, the pushing frame drives the flange clamp to move; and all the flange clamps are made to make folding movement, so that the flange body to be machined is fixed to the center of the drilling platform, the drilling position is more accurate, and the positioning action is automatically completed.

The invention relates to the technical field of motor assembling, in particular to a motor assembling device and method. The motor assembling device comprises a guide shaft, a power pack and a clamping mechanism for clamping a stator. And the guide shaft is matched with the clamping mechanism, so that the guide shaft can penetrate into the stator clamped by the clamping mechanism. The power pack comprises a plurality of direct-current power supplies. During use, a plurality of power supplies are respectively connected with each winding of the stator, so that each winding of the stator generates a magnetic field, and the magnetic field generated by each winding is the same as the magnetic field of the closest rotor magnetic pole. When the rotor enters the stator, repulsive force of the stator is applied to the periphery of the rotor. And the rotor is locked at the center of the stator. The rotor is prevented from colliding with the inner wall of the stator in the process of entering the stator.

The invention belongs to the field of medical instruments, and particularly discloses a magnetic control vibration drug delivery capsule robot and system. According to the invention, the power supply and the motor are arranged inside, so that high vibration intensity can be realized; in a default state, attraction force exists between the valve magnet and the limiting magnet, and the valve magnet blocks the medicine bin outlet under the action of the attraction force; under the action of an external strong magnetic field, the valve magnet rotates, the force between the valve magnet and the valve magnet is converted into repulsive force, and as the transverse movement of the limiting magnet is limited by the limiting bin, the valve magnet opens the medicine bin outlet under the action of the repulsive force; under the vibration effect of the vibration motor, the medicine is released in an accelerated mode through the medicine release channel, meanwhile, the mucus barrier is removed, and therefore the absorption rate of the medicine is increased. The multi-time dosing and stirring can be realized as required, and compared with a medicine capsule with a magnetic soft body valve, a non-alternating small magnetic field is used for triggering, so that the requirement on a power supply is reduced, and the problem of coil heating is avoided.

A transport system 10C has a configuration to move a transport body 500 in conjunction with movement of a moving body 200 by using repulsion based on a magnetic force applied between moving body magnets 213 and a transport body magnet 523 when there is a proximal positional relation between these magnets. The transport system 10C includes a control coil 903 that controls a traveling state of the moving body 200, and a coil drive control unit that drives and controls the control coil. The control coil 903 is configured to apply a magnetic force to the moving body magnets 213. The coil drive control unit supplies the control coil 903 with power to cause the control coil 903 to attract the moving body magnets 213 against an air flow flowing within an air blowing tube 100 in order to control and prevent the moving body 200 from traveling.

The utility model provides a ratchet wheel structure of a bicycle hub, which comprises a clutch ratchet group, a first ratchet ring and a second ratchet ring which are made of magnetic materials and mutually exclusive in magnetism, a plurality of first ratchets and second ratchets which are radially arranged are respectively arranged on one end face of each first ratchet ring and one end face of each second ratchet ring, and a plurality of second ratchets are respectively arranged on the other end face of each first ratchet ring and the other end face of each second ratchet ring. The other meshed end edges of the first ratchet rings and the second ratchet rings are respectively provided with an elastic element; a first transmission group is arranged between each first ratchet ring and the hub seat, and a second transmission group is arranged between each first transmission group and the hub seat; therefore, the first ratchet ring and the second ratchet ring which are in a magnetic repulsion state are utilized to generate separation force, and elastic elements at the other ends of the first ratchet ring and the second ratchet ring are matched to apply approaching force, so that the ratchet rings are in a floating state, and when friction force is larger than elastic force and the repulsion force is added, the separation distance between the ratchets on the two sides can be increased so as to reduce friction. And the service life of the ratchets is prolonged, the non-treading tooth disengaging action is quicker and more sensitive, and the maintenance cost can be effectively reduced.

To provide an impact absorption device that can be reused by reverting a holder after use, and that is less likely to generate a repulsive force because impact is absorbed by a friction force generated at the time of press fitting of a columnar member.SOLUTION: An impact absorption device includes: a plate-shaped holder 3 which is detachably assembled to a frame body 2; and a columnar member 4 provided on the holder 3. The holder 3 has a through hole 3a open thereon. Both of one face and the other face of the holder 3 can be assembled to the frame body 2. With one end part 41 side of the columnar member 4 being disposed in the through hole 3a and the other end part 42 side of the columnar member 4 extending to an opposite side of the frame body 2, when an external force toward the one end part 41 side is applied to the other end part 42 side of the columnar member 4, the one end part 41 of the columnar member 4 is displaced toward the side of the frame body 2 and a middle part of the columnar member 4 is press-fitted into the through hole 3a.SELECTED DRAWING: Figure 1

The invention discloses a wall column formwork slurry leakage prevention plugging device, and relates to the technical field of building construction, the wall column formwork slurry leakage prevention plugging device comprises a mounting box, a plugging mechanism is arranged above the mounting box, the plugging mechanism comprises a sealing block, an air bag is fixedly mounted on the bottom surface of the sealing block, a sealing gasket is arranged below the air bag, and a correction assembly is arranged on the back surface of the mounting box. According to the wall column formwork slurry leakage prevention plugging device, through the arrangement of the correction assembly, a worker fixes a magnetic block to a formwork, then when a vibrator vibrates concrete, the pressure detected by a pressure induction piece is increased, and then the concrete is subjected to slurry leakage prevention, so that the slurry leakage prevention of the wall column formwork is achieved; by increasing the magnetic force of the electromagnet, the electromagnet and the magnetic block attract each other, the electromagnet is more firmly fixed to the formwork, meanwhile, the repulsive force between the electromagnet and the magnetic plate is utilized, the sealing block is more tightly attached to the gap, and therefore the phenomenon that concrete leaks is avoided.

The present invention discloses a drawing assistance device, a control method, a refrigerator and a computer-readable storage medium, comprising: a first magnetic force assembly, with a magnet part arranged at the rear side of the drawer and a magnetic force device part arranged on the inner wall of the inner liner box facing the opening; a distance sensing device for detecting the distance that the drawer is drawn out of the inner liner box; and a controller capable of controlling the two parts of the first magnetic force assembly to attract each other, repel each other or cut off power according to the distance information detected by the distance sensing device. By arranging a magnetic force device on the drawer or the fruit and vegetable box, the present invention can generate a repulsive force or an attractive force between the magnetic force device of the first magnetic force assembly and the magnet by controlling the energization of the magnetic force device, so as to provide an outward thrust force to the drawer, reducing the force used by the user to draw the refrigerator outwards; or provide an inward suction force to the drawer, reducing the force used by the user to push the refrigerator back inwards. Magnetic force devices are also arranged on the left and right sides to ensure the stable position of the drawer box.

The invention belongs to the technical field of environmental functional materials and pollution remediation, and particularly relates to a universal method for preparing a magnetic adsorbent based on physical blending. The method comprises the following steps: mixing magnetic colloid particles and non-magnetic colloid particles in a solution, adding salt to adjust electrolyte concentration to induce colloid coagulation, uniformly mixing the particles by ultrasonic or vortex, standing, and collecting the obtained magnetic adsorbent by using an external magnetic field. The mechanism is characterized in that the interaction between particles is based on the colloid coagulation effect of the DLVO theory, and the relative magnitude of electrostatic repulsive force and Van der Waals attractive force is regulated and controlled by regulating and controlling the salt concentration, so that colloid coagulation is driven, and the magnetic adsorbent is formed. Complex chemical modification or high-temperature treatment is not needed, the original structure, adsorption performance and extraction performance of the adsorbent can be reserved, and the adsorbent is endowed with magnetic separation performance. Meanwhile, the method has the advantages of simplicity and convenience in operation, low cost, high universality and the like, and has a wide application prospect in the field of large-scale preparation of magnetic adsorbents.

The application relates to the technical field of electromagnetic damping, and provides a novel eddy current electromagnetic damper which comprises a cylindrical shell conductor plate (formed by embedding a conductive plate and a magnetic conductive plate), a ring-shaped Halbach permanent magnet array (as a mover), two strip-shaped permanent magnets, a central shaft and an end cover. When the damper is impacted, the mover and the stator move relatively, the conductive plate generates an eddy current, and an eddy current resistance is formed. Meanwhile, repulsion between N poles between the two strip-shaped permanent magnets and the ring-shaped Halbach permanent magnet array generates repulsion force, pushes the ring-shaped Halbach permanent magnet array back to the middle position, and makes the damper reset rapidly. The damper has the advantages of simple structure, low cost and high reliability, and is suitable for large-scale popularization and application.

This application relates to the field of underground transportation in coal mines and discloses a method for intercepting runaway speeding vehicles underground. The method includes: acquiring the vehicle speed and a preset speed threshold; triggering a hook to pop out downwards when the vehicle exceeds the speed limit; the hook inserts into a groove in the bottom plate and moves forward with the vehicle, physically connecting with an arresting cable in the shallow groove; the arresting cable, under traction, causes an upper sliding magnet to slide within a steel groove, generating friction and forming a first-stage braking force; the upper sliding magnet approaches a lower fixed magnet, generating a magnetic repulsion force of the same pole, which, combined with the friction force, forms a second-stage braking force until the vehicle stops; finally, the connection is released and the system is reset. This application achieves smooth vehicle interception through the two-stage superposition of friction and nonlinear magnetic repulsion, avoiding rigid impact; a power-off trigger mechanism ensures reliable interception when the vehicle is damaged due to power failure; and the reserved redundant rope segment at the end of the arresting cable compensates for tensile deformation, preventing cable overload and breakage.

The utility model discloses a cable external deformation detection device which comprises a workbench and a cable roller, the top of the workbench is fixedly provided with a vertical plate, the back of the vertical plate is fixedly provided with a motor, the output end of the motor is fixedly provided with a rotating shaft A, and one end of the rotating shaft A far away from the motor is fixedly provided with an electromagnet. A friction ring is fixedly mounted on the back of the vertical plate, a rotating block is rotatably mounted on the inner side of the friction ring, a rotating shaft B is fixedly mounted on one side of the rotating block, connecting plates are fixedly mounted on the outer side of the rotating shaft B and the outer side of the rotating shaft A, and four inserting rods are fixedly mounted on one side of each connecting plate. And when the cable roller is used for winding the detected cable, the current introduced to the magnet is increased, so that the magnetic force of the magnet is enhanced, the repulsive force to the electromagnet is improved, the cable roller moves on the outer side of the rotating shaft A, the cable cannot be stacked and wound, and the winding effect is improved.

The invention relates to an electromagnetic actuator having a magnetic circuit comprising at least two, preferably three, magnetic circuit elements, wherein the magnetic circuit elements exert an attracting or repelling force on one another such that the actuator effects a movement, wherein the position of at least one of the magnetic circuit elements relative to another magnetic circuit element can be adjusted in order to influence the actuator rigidity.

The application discloses a magnetic suspension push neutral pen, which comprises a tube body, a pen core, a gear, a rotating wheel, an upper magnet and a lower magnet with mutual repulsion, wherein the gear and the rotating wheel are sleeved on the tube body, the inner side of the tube body is provided with a guide rail, the guide rail is in sliding connection with the gear, the gear is used for abutting against the rotating wheel to drive the rotating wheel to move along the axial direction to a first point position and a second point position, the upper magnet is located below the rotating wheel and moves up and down along the axial direction following the rotating wheel under the action of the mutual repulsion, and the upper end of the pen core is connected with the rotating wheel and follows the rotating wheel to axially stretch and contract so that the pen tip of the pen core is located on the inner side of the tube body or extends out. The structure of the scheme does not need to use a spring and can effectively reduce noise.

The present invention relates to a permanent magnet assembly (1) for a shuttle (2) of a linear motor and / or a planar motor. The permanent magnet assembly (1) has a plurality of permanent magnets (3, 3') disposed on at least one magnetic surface. These permanent magnets (3, 3') form alternating magnetic strips with different polarities in the central region of the magnetic surface. At the edge (7, 7') of the magnetic surface, at least one end magnetic body (13, 13') is provided in the edge surface between the central region and the edge (7, 7'). The at least one end magnetic body changes the magnetic field distribution formed by the permanent magnet (3, 3') in the central region along the edge (7, 7') in a manner that varies along the length of the edge (7, 7'). Alternatively, the at least one end magnetic body (13, 13') is implemented as a magnetic short-circuit element that guides the magnetic field formed by the permanent magnet (3, 3') in the central region along the edge (7, 7'). The mutual attraction or repulsion between two permanent magnet assemblies (1, 1') of the same type arranged side by side with parallel edges (7, 7') is reduced by the changed magnetic field.

The magnetic fluid sealing structure comprises an outer sleeve, an inner ring sleeve, a first magnetic ring and a second magnetic ring, the outer sleeve, the inner ring sleeve, the first magnetic ring and the second magnetic ring are coaxially arranged, the inner ring sleeve is located in an inner ring of the outer sleeve, the second magnetic ring is located in a groove of the outer sleeve, the first magnetic ring is located in a groove of the inner ring sleeve, and the second magnetic ring is located in a groove of the outer sleeve. The same magnetic poles of the first magnetic ring and the second magnetic ring are oppositely arranged, a gap is formed between the first magnetic ring and the second magnetic ring, and the magnetic fluid is placed in the gap, so that a dynamic O-shaped ring formed by the magnetic fluid under the action of a magnetic field has high adaptability and stability, leakage of a gas or liquid medium can be effectively prevented, and the service life of the gas or liquid medium is prolonged. And the device is suitable for high-vacuum environments or corrosive medium treatment occasions. The like magnetic poles of the first magnetic ring and the second magnetic ring are oppositely arranged, strong repulsive force is generated, it is ensured that the magnetofluid forms evenly-distributed liquid rings in a gap between the first magnetic ring and the second magnetic ring, and the sealing effect is further enhanced.

The key structure of the keyboard comprises a keyboard shell, a keycap, a groove, a first magnet and a second magnet, the keycap is vertically installed on the keyboard shell, the groove is formed in the keycap, the first magnet is installed in the keycap, the second magnet is installed at the bottom of the first magnet, and the second magnet is installed at the bottom of the second magnet. Through the magnetic interaction between the first magnet and the second magnet and the adjustment of the attraction force or repulsive force of the electromagnet to the second magnet, the key cap can move up and down quickly and stably, so that the response speed of the keyboard and the stability of typing experience are improved, and the design of the electromagnet below the second magnet is matched with a contraction part between the electromagnet and the second magnet. According to the key structure, a progressive and controllable resistance sense can be provided when the key is pressed down, the touch sense of the key is softer, feedback is clear, finger fatigue caused by long-time typewriting is reduced, and due to the application of the conductive film and the elastic rubber cap, the durability of the key structure is enhanced, and the service life is prolonged.

The application discloses a constant elastic force clamping mechanism, which comprises a base, a left clamping piece, a right clamping piece, an elastic piece, a sliding block, a first magnet arranged in the sliding block and a second magnet arranged in the base, wherein the first magnet and the second magnet are oppositely arranged and spaced, the two opposite surfaces of the first magnet and the second magnet are parallel to each other, the included angles between the two surfaces and a horizontal plane are θ respectively, and the repulsion force between the first magnet and the second magnet is a clamping force F of the sliding block on a bottle mouth X =Fsinθ; the clamping force F of the sliding block on a bottle with a bottle mouth radius of a set value R1 1X =F1sinθ, wherein the clamping force F of the sliding block on a bottle with a bottle mouth radius of a set value R2 2X =F2sinθ, and F1=F2. The constant elastic force clamping mechanism and the constant elastic force clamping method can maintain a constant clamping force after replacement for two types of bottles with a determined bottle mouth radius, and the problems of bottle falling and bottle mouth scratching are avoided.

Provided in the present invention is an excitation combination structure, comprising two magnets and a winding consisting of wires, wherein the two magnets are respectively a fixed magnet and a movable magnet, the winding is located between the two magnets and is attached to an adjacent surface of the fixed magnet, and the winding is connected to a power source, a sensor and a control circuit. A brushless electric motor manufactured by using the excitation combination structure comprises a stator, a rotor, a winding, a power source, an induction control circuit, etc., wherein the rotor is mainly composed of a permanent magnet group and an electric motor spindle, the stator is mainly composed of a permanent magnet group and a winding arranged on an adjacent surface of the stator relative to the rotor, and the winding is connected to the power source, a magnetic-induction or light-sensation sensor and a control circuit, and is attached to a stator permanent magnet; and an electromagnetic force generated by the winding is mainly used for overcoming a repulsive force barrier, and the main work done by the electric motor is generated by an inherent repulsive force between the permanent magnet groups of the rotor and the stator of the electric motor.

To provide an electrostretching machine with improved material uniformity. [Solution] The present invention relates to an electrostretching machine with improved material uniformity, in which the shape of the electric field generated between the emitter and the collector is changed stably or variably over time, thereby achieving a more uniform deposition of fiber-particles. To do this, the machine comprises a steering electrode (6) positioned at the end of an injector (1), the steering electrode (6) being connected to a power module (5) that applies a potential difference to the steering electrode to exert a repulsive or attractive force on the fiber-particles (4), and a collector (3) comprising conductive material regions (8) positioned on the surface of an insulating material (7) that are electrically insulated from each other, and a voltage which can have a continuous or alternating amplitude and / or phase is applied to the conductive material regions (8).

The invention discloses a magnetic latching relay, and relates to the technical field of relays. In order to solve the problems that the contact opening distance of a conventional relay is insufficient (only 0.8 mm) and the conventional relay is difficult to bear 6000A short-circuit current, the invention designs a symmetrical Z-type contact system. The system comprises two groups of movable reeds which form a Z-shaped structure through a riveting connection sheet. And the armature assembly rotates to drive the two push sheets to drive each group of movable reeds to realize a stroke greater than 3mm, so that an electric gap between the two lead-out sheets is greater than 5.5 mm. When short-circuit large current occurs, reverse repulsive Lorentz force (F2) is generated between the movable contact spring and the connecting sheet, repulsive force (F1) between the movable contact and the static contact is offset, reliable attachment of the contacts is ensured, and explosion under the impact of 6000A short-circuit current is prevented.

The embodiment of the invention provides a method and device for determining the volume of a permanent magnet, a storage medium and electronic equipment, and the method comprises the steps: determining the repulsive force corresponding to the magnetic suspension between the permanent magnet in a target object and a wind wheel, the minimum gap between the permanent magnet and the wind wheel, and the diameter of the permanent magnet, the minimum gap is used for indicating a minimum distance for maintaining a non-contact suspension state between the permanent magnet and the wind wheel; determining the target thickness of the permanent magnet according to the repulsive force, the minimum gap and the diameter of the permanent magnet; and determining a target volume corresponding to the permanent magnet according to the target thickness. According to the method, the problem that the required magnetic suspension force is not matched with the size of the permanent magnet in the prior art can be solved.

A detachable repelling magnet assembly for use with a water pipe, comprising a plurality of magnetic components positioned in a repelling sequence in which each magnetic component exerts a repelling force against the magnetic component adjacent thereto, the magnetic components are disposed linearly within a flexible outer casing secured in linear alignment with the water pipe, or are disposed in opposing pairs within a housing formed of a first portion and a second portion which fit together to circumferentially enclose a portion of the water pipe.

The present disclosure relates to a reflective module comprising: a housing; a bracket disposed in the housing and configured to be rotatable relative to the housing; a first magnetic portion disposed on one surface of the bracket; and a second magnetic portion disposed on one surface of the housing and facing the first magnetic portion, in which both the attractive force and the repulsive force act between the first magnetic portion and the second magnetic portion. The present disclosure also relates to a camera module comprising the reflective module.