226 results about "Magnetic wires" patented technology

The multiple rotation angle detection device includes a segment counter that counts segments obtained by dividing one rotation period of a rotating body into two in an angle range exceeding one rotation to generate a count value, a precision absolute angle detector that generates an absolute angle detection value within one rotation period with high resolution, and a calculation device that integrates the count value and the absolute angle detection value to generate a multiple rotation absolute angle detection value. The segment counter includes a power generation sensor, a magnetic field generation source, a sensor element, and a non-volatile memory that stores the count value and information that can identify pulse information. The pulse information includes the output state of the sensor element and the polarity of the pulse voltage. The magnetic field generation source applies an alternating magnetic field of two periods per rotation in the axial direction of the magnetic wire. When power is supplied from an external source, the calculation device performs calculation for integration using the count value stored in the non-volatile memory and the information that can identify pulse information.

The utility model belongs to the technical field of magnetic separators, and particularly relates to an electromagnetic separator with a heat dissipation coil, which comprises a frame, a conveying mechanism mounted on the frame, a transmission mechanism connected with the conveying mechanism, and a magnetic separation mechanism mounted on the frame. The magnetic separation mechanism comprises a shell, a winding reel is mounted in the shell, the winding reel is connected with a mounting frame, and a mounting ring is mounted on the mounting frame; each installation ring is provided with a plurality of winding supporting rods, electromagnetic wires are wound around the outer sides of the winding supporting rods of the installation rings, the electromagnetic wires sequentially wind around the winding supporting rods of the installation rings from inside to outside along the centermost installation ring, and a heat dissipation gap is reserved between every two electromagnetic wire layers. By arranging the mounting ring and the winding supporting rod, a plurality of gaps are reserved between the electromagnetic coils, heat dissipation of the electromagnetic coils is facilitated, the ventilation holes, the draught fan, the coil pipe, the oil cooler and the temperature sensor are additionally arranged, the temperature in the magnetic separation mechanism can be detected and adjusted in real time, and normal operation of the device is guaranteed.

A position detection device includes: a first support; a second support that is movable relative to the first support; a power generation sensor disposed on the first support; and a magnetic field generation source fixed to the second support. The relative movement of the second support causes a plurality of magnetic poles having the same polarity to sequentially enter the detection region of the power generation sensor. The power generation sensor includes: a magnetic wire configured to exhibit a large Barkhausen effect; a coil wound around the magnetic wire; and a first magnetic flux conducting piece and a second magnetic flux conducting piece respectively magnetically coupled to the opposite end portions of the magnetic wire and each having a magnetic flux conducting end opposed to the detection region.

The invention discloses a production line and a production method for processing square blocks into ferrite magnetic discs, comprising a square mold: a press: a bell furnace: a first magnetic material wire cutting machine: a rounding machine: a centerless external circular grinding machine: the centerless external circular grinding machine is placed at the tail of the first magnetic material wire cutting machine, and is used for fine processing of cylindrical blanks, so that the cylindrical blanks are processed into cylindrical parts; a bonding platform: the bonding platform is placed at the tail of the centerless external circular grinding machine, and a plurality of cylindrical parts are placed in a rectangular array in the bonding platform, and the bonding platform is used for bonding the cylindrical parts arranged in the rectangular array into one; a second magnetic material wire cutting machine: the second magnetic material wire cutting machine is placed at the tail of the bonding platform, and is used for cutting the cylindrical parts bonded into one into a plurality of circular discs bonded into one; an immersion separation tank; the present invention uses a set of molds and a tonnage press to realize the processing of magnetic discs of different thicknesses, and has high production efficiency and low cost.

A multiturn angle detection device generates the multiturn absolute angle detection value of a rotating body. The multiturn angle detection device includes: a segment counter; a precision absolute angle detector; and an arithmetic device to generate the multiturn absolute angle detection value by combining the outputs of the segment counter and the precision absolute angle detector with each other. The segment counter includes: a single power generation sensor; a magnetic field generation source; a sensor element; and a nonvolatile memory to store a count value. The magnetic field generation source applies a k-cycle alternating magnetic field (wherein k is an integer not smaller than 3) per each turn of the rotating body axially of a magnetic wire. The arithmetic device uses the count value stored in the nonvolatile memory as it is, and combines the count value with the absolute angle detection value of the precision absolute angle detector.

The invention belongs to the technical field of robot milling vibration control, and particularly relates to a three-dimensional unit cell type vibration absorber for restraining variable flutter during robot milling and a design method of the three-dimensional unit cell type vibration absorber. The vibration absorber comprises a plurality of magnetic conductive balls, a plurality of magnetorheological elastomers, a magnetic conductive block, an electromagnetic coil, an upper wall, a lower wall and four side walls. The upper wall, the lower wall and the four side walls form a cubic structure, the electromagnetic coil sleeves the outer walls of the four side walls, and the magnetic conductive block sleeves the outer wall of the electromagnetic coil and is connected with the upper wall and the lower wall; the three-dimensional unit cell type vibration absorber is of a central symmetry structure. The plurality of magnetic conductive balls are arranged in the cubic structure according to the form of the body-centered cubic structure, the inner wall of the cubic structure is connected with the magnetic conductive balls, and the magnetic conductive ball located at the body center is connected with the magnetic conductive balls located at the eight vertex angles through the magnetorheological elastomer. The whole structure has three-dimensional symmetry, so that the structure can still keep stable under any rotating posture of the robot, modals of different directions and frequencies of the robot can be restrained, and the restraining effect is good.

Rare earth iron nitrogen (R-Fe-N) magnetic powder is further compounded with ferrite magnetic powder, an elastic base material and a flame retardant are added to obtain a flame-retardant magnetic layer material, a wire core and the flame-retardant magnetic layer material are subjected to co-extrusion molding, and the wire is obtained through magnetization. And a wire preparation scheme with minimum addition of the flame retardant, highest magnetic attraction performance and optimal mechanical performance at present can be realized. The prepared wire rod has good flexibility and also has good tear resistance and tensile property, the excellent flame retardant property can still be kept under the condition that the adding amount of the flame retardant is reduced, and meanwhile the high magnetic attraction force of the wire rod is achieved.

A multiturn angle detection device includes: a segment counter to count segments in an angular range over the single turn of a rotation shaft; a precision absolute angle detector to generate an absolute angle detection value within the single-turn cycle; and an arithmetic device to generate a multiturn absolute angle detection value by combining the output of the segment counter with the output of the precision absolute angle detector. The segment counter includes: a single power generation sensor; a magnetic field generation source; a sensor element; and a nonvolatile memory to store a count value. The magnetic field generation source applies a two or more-cycle alternating magnetic field per each turn of the rotation shaft axially of a magnetic wire. The arithmetic device uses the count value stored in the nonvolatile memory as it is when receiving external electric power supply.

The invention discloses a magnetic circuit combination structure of an electromagnetic valve, and relates to the technical field of electromagnetic valves. Comprising an electromagnetic wire winding support, a magnetic conductive frame, a magnet, an upper fixed iron core, a lower fixed iron core, a movable iron core, movable iron core sealing soft rubber, an electromagnetic coil and a magnetic conductive frame fixing piece. A magnet is placed on the inner side of the magnetic conductive frame, the magnetic conductive frame, the matched magnetic conductive frame fixing piece, the upper fixed iron core and the lower fixed iron core are assembled together to form a complete magnetic field loop, and the assembled magnetic field loop wraps or surrounds the electromagnetic wire winding support so that a complete magnetic field encirclement ring can be formed in the center of the electromagnetic wire winding support. A through hole is formed in the center of the electromagnetic winding support, the electromagnetic winding support, the upper fixed iron core and the lower fixed iron core are assembled to form a closed movable iron core moving cavity, the movable iron core moving cavity is used for containing a movable iron core, and the electromagnetic wire winding support is provided with an electromagnetic coil position used for winding an electromagnetic coil. The movable iron core is driven to move by instantly electrifying the electromagnetic coil and changing the electrode direction of the electromagnetic coil to generate electromagnetic force in different directions, and the movable iron core is attracted to the upper fixed iron core or the lower fixed iron core through the magnetic field loop under the condition that the electromagnetic coil is stopped being electrified, so that the effect of stabilizing the switch valve is achieved. The structure design is reasonable, the production efficiency is high, the stroke of the movable iron core is large, the movable iron core is adsorbed and fixed by magnetic force when the valve is opened and closed, the performance is stable, and high practicability is achieved.

The utility model discloses a key assembly, a key module and electronic equipment, and relates to the field of electronic equipment. The key assembly comprises a stator unit and a mover unit, one of the stator unit and the mover unit comprises a first electromagnetic coil, and the other one of the stator unit and the mover unit comprises a first magnetic element which can be acted by a magnetic field generated by energization of the first electromagnetic coil; the key assembly is arranged to detect pressing force by detecting magnetic field changes between the first electromagnetic coil and the first magnetic element, and the key assembly is arranged to enable the mover unit to conduct vibration feedback when the detected pressing force is larger than a trigger threshold value. In the key assembly, the stator unit and the mover unit can be matched to realize detection of the pressing force, the mover unit can be utilized to realize vibration feedback after pressing, and the mover unit is shared in the pressing force detection process and the vibration feedback process after pressing, so that the structure of the key assembly is simplified, the size of the key assembly is reduced, and the cost is reduced. And the cost of the key assembly is reduced.

The present invention relates to a DCT superconducting magnet structure, characterized by comprising a cylindrical electromagnetic wire formed by a plurality of monopole coils, the cylindrical electromagnetic wire being solidified on a skeleton to form a magnet structure, and the monopole coils being connected in series. Each monopole coil includes N turns of electromagnetic wire arranged in a spaced-apart arrangement, where N is an integer representing the total number of turns of electromagnetic wire in the monopole coil. The proposed DCT superconducting magnet structure can generate a high-quality multipolar magnetic field without requiring an iron core. The cylindrical structure enables a multi-layer nested structure, making it suitable for applications with varying apertures and magnetic field requirements, thus possessing a wide range of applications.

The present disclosure provides "Asymmetric wire insulation for traction motor stators." A stator assembly is presented. The stator assembly includes a stator core defining slots and magnetic wires positioned within the slots. Each magnetic wire includes a conductive core and an insulation layer surrounding the core. The insulation layer can have a varying thickness, with thinner portions spanning certain sides of the wire and thicker portions spanning other sides.

The utility model discloses a low damping pulsation electromagnetic pump, including pump shell, pump core, solenoid and elastic reset piece, the solenoid is sleeved in the outside of pump shell, be equipped with the water passageway and be equipped with the water inlet and the water outlet of water passageway both ends in the pump shell, the pump core is under the action of the magnetic field of solenoid and the elastic reset piece and reciprocates in the water passageway, be equipped with the Tesla valve flow channel in the pump core, the both ends of Tesla valve flow channel have positive and negative direction mouth, the positive direction mouth is linked together with the water inlet, the negative direction mouth is linked together with the water outlet. The utility model discloses an electromagnetic pump, still guarantee electromagnetic pump to have the water pumping capacity and the effect of accelerating and pressurizing to water flow under the condition of not using check valve, because of not having check valve, the water pressure loss is smaller. In addition, the utility model discloses a kind of intelligent closestool using above-mentioned low damping pulsation electromagnetic pump.

According to the invention, a magnetic sensor can be easily arranged on a substrate together with other electrical and electronic components. A magnetic sensor device (3) is provided with a sensor unit (4) and board-side connectors (24, 25). The sensor unit (4) is provided with a magnetic sensor, a yoke, and a housing (19). The magnetic sensor includes a magnetic wire that plays a large Barkhausen effect, a bobbin in which the magnetic wire is disposed, a coil formed by winding an electric wire around the bobbin, a sensor-side connector provided at a left end portion of the bobbin, and a sensor-side connector provided at a right end portion of the bobbin. The magnetic sensor device (3) is provided on the substrate (35) by mounting the substrate-side connectors (24, 25) on the substrate (35) and then connecting the sensor unit (4) to the substrate-side connectors (24, 25).

The motion detection device (5) includes a first support (51), a second support (52) that moves relative to the first support, a power generation sensor (100) disposed on the first support, and a magnetic field generating source (400) supported on the second support. The power generation sensor includes a magnetic wire (110), a coil (120), and a magnetic flux conducting plate (130, 131). The magnetic flux conducting plate includes an axially orthogonal portion and an axially parallel portion, and has a wire arrangement portion that fixes the axially orthogonal portion and both ends of the magnetic wire. The power generation sensor is configured such that the side opposite to the magnetic wire is set as the detection area (140) relative to the axially parallel portion. The magnetic field generating source has multiple magnetic poles. Magnetic poles of different polarities enter the detection area sequentially along a track (30) parallel to the axis of the magnetic wire and are opposite to the power generation sensor. The magnetic flux direction of each magnetic pole is perpendicular to its direction of movement and is the direction that intersects with the magnetic wire.

The invention provides a multi-rotation angle detection device which generates a multi-rotation absolute angle detection value of a rotating body rotating around a rotation axis. A multi-rotation angle detection device includes: a segment counter that counts segments in an angle region in which rotation exceeds one time, the segments being divided into one rotation cycle of a rotating body; a precision absolute angle detector that generates an absolute angle detection value for one rotation period of the rotating body; and a calculation device that integrates the outputs thereof and generates a multi-rotation absolute angle detection value. The segment counter includes a power generation sensor, a magnetic field generation source, a sensor element, and a non-volatile memory storing a count value. The magnetic field generation source applies an alternating magnetic field of k cycles (k is an integer of 3 or more) to the axial direction of the magnetic wire every time the rotating body rotates. When the arithmetic device receives the external power supply, the counting value stored in the nonvolatile memory is directly used for integrating the absolute angle detection value of the precise absolute angle detector.

When a plurality of magnetic sensors are mounted on a substrate in order to detect rotation of a rotating body using the plurality of magnetic sensors, the present invention suppresses displacement of disposition between the plurality of magnetic sensors, and reduces man-hours for mounting work. A magnetic sensor device (3) is provided with: a plurality of magnetic sensors (4) each having a magnetic wire (5) that plays a large Barkhausen effect, and a coil provided on the outer peripheral side of the magnetic wire (5); and a housing (16) to which each of the plurality of magnetic sensors (4) is fixed, the plurality of magnetic sensors (4) being arranged at predetermined intervals in the circumferential direction around a reference line orthogonal to a reference surface on the same reference surface as the lower surface of the housing (16) and so that the direction in which the magnetic lines (5) extend is parallel to the reference surface.

The rotation detection device includes an annular multi-pole magnet provided on a rotating shaft and a power generation sensor that detects a magnetic field that changes with rotation of the multi-pole magnet. The power generation sensor includes a magnetic conductive wire exhibiting a large Barkhausen effect, a coil wound around the magnetic conductive wire, and a pair of magnetic flux conduction sheets comprising soft magnetic members magnetically coupled to both ends of the magnetic conductive wire, respectively. The annular multi-pole magnet has a magnetization pattern inclined with respect to the rotation axis at the outer peripheral portion. The power generation sensor faces the magnetization pattern of the multipole magnet in a posture in which the axial direction of the magnetic wire is parallel to the rotation axis.

The utility model relates to the field of mining area electromechanical equipment maintenance, in particular to an electromagnetic induction type flexible heating device which comprises an outer box body and a heating device, heat dissipation holes are formed in the surface of the outer box body, moving wheels are arranged at the bottom of the outer box body, and a control panel is arranged on the side of the upper end face of the outer box body. The heating device is composed of a frame, a heat preservation cylinder and an electromagnetic cable, the frame is of a cylindrical structure design, the heat preservation cylinder wraps the outer side of the frame, the upper end and the lower end of the heat preservation cylinder are fixedly connected with the frame, and the electromagnetic cable is arranged on the inner side of the frame in a winding mode. The two ends, extending to the outer side of the heat preservation cylinder, of the electromagnetic cable are each provided with a power connection plug. The utility model has the advantages of low energy consumption, electricity saving, high heating speed, no pollution, no noise, no need of preheating, difficulty in oxidation, convenience in gas protection, automatic control, safety, reliability, easiness in operation, capability of continuously working and the like.

A medical device for retrieval of kidney stone fragments from a urinary tract is provided. The medical device has a plurality of magnets arranged within a flexible sheath forming a flexible wire. The magnets are magnetically attached end-to-end and arranged with their magnetic polarities alternating in direction. The magnetization direction of each of the magnets is orthogonal to the length axis of the flexible wire. A removable inner stylet is situated within the flexible sheath allowing for modifiable flexibility of the wire. The medical device is dimensioned to be introduced into the urinary tract and standard endoscopic devices. The medical device is further dimensioned to allow for the wire with magnetically attached stone fragments to be retrieved from the urinary tract. The magnetic field along the length axis is sufficient to attract to the surface of the flexible wire superparamagnetic nanoparticles which have bound themselves to kidney stone fragments.

Provided is a magnetic wire material containing an alloy containing 40 mass % or more and 50 mass % or less of Ni, with the balance being Fe and unavoidable impurities, in which in a cross section of the wire material along an axial direction thereof, a proportion of a crystal structure in which an angle difference between the axial direction and a <111> direction is 10° or less is 20% or more.

The invention discloses a manufacturing process of a charging magnetic attraction wire, the charging magnetic attraction wire comprises a magnetic attraction head, an electric wire and a plug, the electric wire comprises a wire core, a wire core jacket and a jacket material, and the manufacturing process comprises the following steps: selecting a proper copper wire, carrying out wire drawing treatment on the copper wire through a wire drawing machine until the copper wire is treated to a proper diameter to be used as a conductor, wrapping the periphery of the conductor with an insulating layer to support a single conductor core, and selecting a plurality of conductor cores to be twisted together to form a wire core; manufacturing a wire core jacket and a jacket material, coating glue on the wire core jacket and the jacket material, wrapping the outer side of the wire core with the wire core jacket, and wrapping the outer side of the wire core jacket with the jacket material to complete the preparation of the wire; respectively connecting the two ends of the electric wire manufactured in the step 2 with a magnetic suction head and a plug, and pressing at the joint; and the magnetic suction head is optimized through process innovation and is changed into no-shell SMD patch welding with the PCB, so that the space is saved, the volume is reduced, and meanwhile, the welding is more precise.

The utility model discloses a double-strand magnetic wire rod capable of being absorbed and stored, which comprises a wire rod main body, and is characterized in that the wire rod main body comprises a first wire core group, a second wire core group, a soft magnet arranged between the first wire core group and the second wire core group, and a protective layer, the protection layer wraps the peripheries of the soft magnet, the first wire core group and the second wire core group; a first magnetic part and a second magnetic part protrude from the two sides of the soft magnet respectively. According to the utility model, the wire core is divided into a plurality of strands, the protection layer wraps the soft magnet, the first wire core group and the second wire core group structurally, the protection effect of the protection layer can be maximized, the soft magnet can be protected from being abraded and demagnetized, the magnetic attraction function cannot be lost after long-term use, and the service life of the wire rod is prolonged. The device is suitable for various working scenes such as outdoor, dark and wet and underground working scenes, and is wide in application range and long in service life.

One aspect of the present disclosure provides an electric work machine with a brushless DC motor. A stator of the brushless DC motor includes a conductive member stacked on a yoke of the stator via an insulator of the stator in an axial direction of a rotation axis of the brushless DC motor. A first connector in the conductive member is aligned with a second connector in the conductive member across the axial direction. The first connector and the second connector overlap an axially extended region of coils on the stator, when viewed from a direction perpendicular to the axial direction. The first connector and the second connector are coupled respectively to a first end and a second end of at least one magnetic wire of the coils.

A stator assembly is presented. The stator assembly includes a stator core defining slots and magnetic wires positioned within the slots. Each magnetic wire includes an electrically conductive core and an insulation layer surrounding the core. The insulation layer may have a varying thicknesses, with thinner portions spanning certain sides of the wires and thicker portions spanning other sides.

A power generation sensor includes a magnetic wire configured to exhibit a large Barkhausen effect, a coil wound around the magnetic wire, and a pair of magnetic flux conducting pieces that include a pair of magnetically-soft components respectively magnetically coupled to the opposite end portions of the magnetic wire. The pair of magnetic flux conducting pieces include a pair of axis-orthogonal portions respectively fixed to the opposite end portions of the magnetic wire and respectively extending parallel to each other orthogonally to the axial direction from the opposite end portions of the magnetic wire, and a pair of axis-parallel portions extending toward each other in the axial direction from the distal ends of the axis-orthogonal portions with their adjacent ends opposed to each other and spaced a gap from each other in the axial direction.

The magnetic sensor device 3 comprises a sensor unit 4 and substrate-side connectors 24, 25. The sensor unit 4 comprises a magnetic sensor, a yoke, and a casing 19. The magnetic sensor comprises a magnetic wire rod that generates a large Barkhausen effect, a bobbin having the magnetic wire rod disposed therein, a coil formed by winding an electrical wire around the bobbin, a sensor-side connector provided in the left end portion of the bobbin, and a sensor-side connector provided in the right end portion of the bobbin. The magnetic sensor device 3 is provided on the substrate 35 by mounting the substrate-side connectors 24, 25 to the substrate 35 and, thereafter, connecting the sensor unit 4 to the substrate-side connectors 24, 25.

The present invention relates to a loudspeaker element for a loudspeaker, comprising two membrane planes substantially spaced apart from each other, wherein each membrane plane comprises at least one electromagnetic wire, which is arranged to generate a magnetic field when an electric current passes through the electromagnetic wire, wherein at least one permanent magnet is arranged between the two membrane planes, wherein the electromagnetic wires of the two membrane planes can be connected to a power supply in such a way that current passes through the electromagnetic wires in substantially opposite directions, thereby generating substantially opposite magnetic fields, so that when an electric current passes through the electromagnetic wires of each membrane plane, the membrane planes are attracted toward the permanent magnet or repelled from the permanent magnet, and thereby move toward or away from each other, respectively, thereby generating sound waves.

Disclosed herein is an apparatus for separation of diamagnetic particles of sub-micron diameter from a fluid. The disclosed apparatus includes a first magnetic coil including a hollow center and a separation unit including an outer enclosure and a second magnetic coil. The second magnetic coil includes a single-layer of windings of a magnetic wire and at least one nonmagnetic wire on a nonmagnetic core where the first magnetic coil houses the separation unit in the hollow inner center. Also disclosed herein is a method of using the apparatus.

The invention discloses an immersion type magnetic field auxiliary electrochemical mechanical polishing device of an additive manufacturing space lattice dot matrix, which comprises a main shaft system unit, the main shaft system unit comprises a Z-direction linear module, a Y-direction linear module, a main shaft motor and a main shaft, the Z-direction linear module is mounted on the Y-direction linear module in a matched manner, the main shaft motor is mounted on the Z-direction linear module, and the main shaft motor is mounted on the Y-direction linear module; the output end of the spindle motor is connected with the spindle which is provided with a clamp used for clamping a workpiece in a matched mode. The electrolytic bath is filled with electrolyte and magnetic abrasive particles, and the electrolytic bath is provided with a cathode; the magnetic field generator comprises a plurality of electromagnetic coils, the electromagnetic coils sleeve the outer side of the electrolytic bath, and a magnetic field is formed in the electrolytic bath by adjusting the current and phase of each electromagnetic coil; the cleaning tank is used for cleaning the workpieces; and the controller is used for controlling the working operation state of the device, the device is used for efficiently treating the space lattice dot matrix through the cooperation of electrochemical corrosion and mechanical friction, and the surface quality and smoothness of the lattice dot matrix are improved.