722 results about "Force lines" patented technology

This portable electromagnetic induction heating device is used to carry an induction current in a conductor, make the conductor generate heat by Joule's heat, and heat adhesive by the heat generating conductor. A heating induction coil (13a) is formed by a plurality of coil bodies (21-24 and 51-54), the respective coil bodies can change mutually center-to-center distances. Simultaneously, by changing any one of polarities thereof, a polarity and a position of a magnetic force line generated by the conductor are changed, whereby a heating state of the adhesive can be changed depending on a region of the adhesive.

The invention discloses a multitooth magnetic bridge type hybrid excitation magnetic flux switching motor. Permanent magnets, an armature winding and a single-phase excitation winding are installed on a stator; the tooth number of the stator is four times of the number of the permanent magnets; and part of a rotor part is a salient pole, and a rotor has no winding or permanent magnets and has simple and firm structure. An air gap magnetic field comprises an electric excitation magnetic field generated by the excitation winding and a magnetic field generated by the permanent magnets and is adjusted by changing the magnitude and the direction of excitation current, thereby improving the rotating speed operating range and the magnetic weakening capability of the motor. An electric excitation magnetic force line is connected with a magnetic bridge for closing after penetrating through an iron core at the top of the permanent magnets, which is beneficial to reducing the electric excitation ampere turns. The invention has parallel connecting structure of the excitation winding and the permanent magnet in space, bipolarity of phase magnetic flux, large magnetic chain change amplitude value and higher torque output capability and power density and is suitable for a low-speed straight application occasion.

A first conductor and a second conductor are provided at a diaphragm. The first and second conductors intersect magnetic force lines between north poles and south poles of permanent magnets M which are adjacent to one another. When electricity passes through the conductors, a direction in which a force from the magnetic field acts on the current is substantially orthogonal to a surface of the diaphragm. Therefore, the diaphragm can be oscillated in the direction orthogonal to the diaphragm surface. The conductors have widths of from 1000 mum to 2000 mum. Therefore, relative errors in the widths caused by etching can be greatly reduced compared to the prior art, and etching is easier. Moreover, the conductors are arranged in a zigzag pattern. Because the conductors do not have a coil form, a large number of through-holes is not required as in conventional products.

The invention provides a method and a device for vulcanizing an inner mold and an outer mold of a tire through direct voltage electromagnetic heating. The vulcanization device consists of an assembly drum structure, an electromagnetic heating device and a tire outer mold. A vulcanization capsule on the conventional shaper vulcanizer central mechanism is replaced by the assembly drum structure of the tire, and the original vulcanization heating mode is replaced by an electromagnetic heating mode through an electromagnetic induction principle; in the vulcanizing process, an alternating magnetic field is generated by an electromagnetic coil under the action of high-frequency alternating current, and a drum tile of an assembly drum generates eddy current through the surface of a magnetic force line in a cutting magnetic field; due to the heat effect of the eddy current, the temperature of the drum tile is quickly increased to heat the tire, and the drum tile is matched with the outer mold to apply direct-voltage type vulcanization pressure onto a tire blank together; in the vulcanization heating process, temperatures of all parts of the tire are uniformly increased, temperature differences cannot be generated on the lateral parts of an upper tire and a lower tire, and steam and other heat transfer media are not required to be introduced at the vulcanizing stage; and the method and the device are high in electromagnetic heating efficiency and heating speed, the vulcanizing time of the tire can be greatly shortened, and the production efficiency of products can be improved.

The invention discloses a circumference magnet-cutting fluid power generation device, which comprises a rotor, a stator and a rear-end processing circuit, wherein the rotor comprises a rotary bearing, a blade and an inner wheel; one end of the blade is connected with the rotary bearing, and the other end of the blade is connected with the inner wheel; the stator comprises an outer wheel and a supporting structure, which are connected with each other; a wire is connected with the rear-end processing circuit; a magnet is arranged on the inner wheel, and the wire is arranged on the outer wheel; or, the wire is arranged on the inner wheel, and the magnet is arranged on the outer wheel; and the blade is driven by fluid and stressed, the inner wheel rotates and moves relative to the outer wheel, and the wire cuts a magnetic force line which is generated by the magnet to generate induced electromotive force, so current is generated. According to the characteristic that the circumference of the inner wheel of the rotor has maximum line speed, the magnetic force line is directly cut for power generation, and the circumference magnet-cutting fluid power generation device can be applied to the fields of wind power generation, river power generation, wave power generation, tail gas power generation and the like, and is simple in structure, high in efficiency and low in cost.

The invention provides an electronic component transporting device, which can guide a plurality of electronic elements towards one direction, keep the position of the inner electrodes as the same and transport in order. The electronic component transporting device is a transporting device for transporting a rectangular electronic element (1) having ferromagnetic inner electrodes. The device is provided with a first transporting path (13), a rotating path (14) and a second transporting path (15), wherein each path is provided with first, second and third transporting platforms. A first magnet (21) is arranged in the rotating path (14) for exerting magnetic force lines on the electronic element (1) so as to guide the inner electrodes of the electronic element to face towards the specified direction.

A pickup apparatus for independently detecting the vibrations of each of a plurality of strings, and an electronic stringed instrument utilizing the pickup apparatus. The pickup apparatus minimizes the crosstalk effects between the different pickups by positioning the pickups such that the magnetic force lines of each pickup is not parallel to or not in close proximity of the magnetic force lines of adjacent pickups. In one example, each pickup in the pickup apparatus is disposed at an angle with respect to the string and with respect to adjacent pickups. In another example, each pickup is disposed at an offset along the length direction of the strings relative to adjacent pickups. In yet another example, each pickup is disposed both at an angle and at an offset relative to adjacent pickups.

A positioning device and method for moving a positioning stage is provided. The device includes a movable stage, at least one actuator, and the same number of sensors as there are actuators. Each actuator is placed such that it applies a force along a line parallel to the line of movement of the positioning stage. Each actuator can be operated to generate an input force for moving the movable stage. A sensor is placed along the force line of each included actuator. Each sensor detects movement of the positioning stage. A first force is applied to a first location on the positioning stage. A second force is applied to a second location on the positioning stage. Application of the first and the second forces moves the positioning stage. The first location and the second location are symmetrically located about an axis of the positioning stage.

A plasma processing apparatus includes a worktable in a process chamber to horizontally place a target substrate thereon. A plasma generation space is defined above and around the worktable within the process chamber. The plasma generation space includes a peripheral plasma region and a main plasma region respectively located outside and inside an outer edge of the target substrate placed on the worktable. The apparatus further includes a magnetic field forming mechanism configured to form a magnetic field within the peripheral plasma region. The magnetic field includes magnetic force lines extending through the peripheral plasma region between a start position and an end position, at least one of which is located radially inside a sidewall of the process chamber.

A method for obtaining high temperature plasma in the Field Reversed Configuration (FRC) magnetic topology is described, allowing for compression, retention and heating plasma, which can be used for obtaining thermonuclear energy or laser pumping. The storage of the magnetic field energy is accomplished by creating a current in the winding of a solenoid over a working volume. In addition, a pulse toroidal magnetic field with force lines perpendicular to the magnetic field of the solenoid is created via the transmission of a current through the working volume. Then, the current is broken off in the solenoid winding when it reaches its maximum to excite a closed current loop in the plasma created in the working volume. The change of the direction of magnetic field outside the current-carrying loop in the plasma is achieved either by changing to the opposite direction of the current in the solenoid or transmitting the current in additional turns parallel to the turns of the solenoid.

A foot wheel driving paraplegia walking aided external skeleton comprises a lower limb brace, a foot driving module and a power supply and a control circuit. The lower limb brace is used for supporting and fixing the lower limbs of a user, the foot driving module comprises wheels which are driven by power to make the user move forwards, and the power supply and the control circuit comprise a power supply module, a driving device and a signal receiving and sending device. By means of the foot wheel driving paraplegia walking aided external skeleton, the force lines of the limb joints do not need to be considered, a complex electromagnetic control scheme is not adopted to coordinate the movement of the joints, walking can be achieved only by controlling a foot motor, the equipment complexity can be reduced, the external skeleton is lighter and more convenient in structure, and the cost of the paraplegia walking aided external skeleton is lower.

A lighting fixture includes a body and a light emitting unit; the body being provided with a magnetic attraction device comprised a magnetic member with permanent permeability and a control member to control direction of magnetic filed lines from the magnetic member for it to provide attraction force or not; the lighting fixture being attached to a metallic surface when attraction force is provided or disengaged from the metallic surface by changing the direction of those magnetic force lines in the magnetic member.

The invention discloses a personalized minimally-invasive knee joint positioning guide plate used for knee arthroplasty and manufactured on the basis of medical image three-dimensional reconstruction and computer-aided design technologies, 3D (three-dimensional) printing or other machining methods, and particularly relates to accurate determination of a positioning joint surface. Firstly, a patient skeleton model is reconstructed on the basis of a two-dimensional medical image; preoperative planning is performed on the reconstructed model, and important parameters such as a lower extremity force line, a femoral rotation axis and an osteotomy reference point are determined to simulate osteotomy and prosthesis implantation; a positioning sheet (single positioning type and composite type) is determined and designed with the results. The positioning sheet is used for positioning with a local positioning principle by means of local area jointing, so that over-positioning and positioning instability are avoided; meanwhile, the wound area is reduced to the maximum extent. A dissection point is positioned through the reconstructed model, so that the lower extremity force line can be reconstructed accurately, and accurate osteotomy is realized.

The invention discloses a novel wave-activated power generator. The novel wave-activated power generator comprises a sealed shell capable of rising and falling or going back and forth by being pushed by waves, a stator is arranged in the sealed shell, a coil winding is arranged in the stator, a fixing shaft is arranged on the sealing shell and located on the inner side of the stator, and the fixing shaft is sleeved with a rotor capable of sliding along the fixing shaft and moving relative to the stator; the rotor comprises multiple magnetic pole units; when the rotor moves relative to the rotor, the coil winding cuts the magnetic force line of the magnetic pole units, induced current is generated in the coil winding, a first return spring is arranged between the upper portion of the rotor and the upper portion of the sealed shell, a second return spring is arranged between the lower portion of the rotor and the lower portion of the sealed shell, and the first return spring and the second return spring can drive the rotor to move relative to the stator when the sealed shell rises and falls. The power generator is simple in structure and capable of generating power by means of waves.

Disclosed is a high-frequency high-voltage transformer structure. A magnetic core of a transformer comprises two U-shaped magnetic cores (1) in butt joint, primary windings (5) and secondary windings (4) are respectively provided with a two-section structure and are wound on two primary winding frameworks (3) and two secondary winding frameworks (2) respectively, and the secondary winding frameworks (2) are sleeved outside the primary winding frameworks (3) to form a coaxial structure. The two primary winding frameworks and the two secondary winding frameworks are sleeved on magnetic arms in the height direction of the U-shaped magnetic cores (1), the primary windings are connected in series, the secondary windings are connected in series, and magnetic force lines generated by the windings are in the same direction in the magnetic cores by a series connection direction. The primary windings and the magnetic cores (1) of the transformer are insulated by the primary winding frameworks (3), and the secondary windings and the primary windings are insulated by the wall thicknesses of the secondary winding frameworks (2) and gaps among the primary windings (5) and the inner walls of the secondary winding frameworks. By the aid of a set of fixtures (6 and 7), the two magnetic cores in butt joint are clamped, and the transformer is fixed.

The present invention discloses making process of electromagnetic oven ceramic cooking utensil with magnetic resonant heating film, and ceramic cooking utensil features its heating layer, which is one magnetic resonant heating film to block magnetic force lines to form magnetic force eddy flow. The magnetic resonant heating film is 0.02-0.15mm thick and has one antioxidant protecting layer of 0.02-0.15mm thickness. The present invention makes it possible to use ceramic cooking utensil on electromagnetic oven.

The invention discloses a magnetic field cancellation big-current detection device and method. A to-be-detected current conductor is provided with two magnetic rings in a winding manner, wherein the winding angles of the two magnetic rings on the conductor are different, thereby forming a structure shaped similar to a concave structure. The intersection of the two magnetic rings is provided with a bigger gap, thereby enabling magnetic force lines to respectively form closed loops in the magnetic rings, and enabling the magnetic fields generated on the magnetic rings to be cancelled to leave a part of magnetic flux when a current passes through the conductor. The joint of the magnetic rings is provided with an air gap, and a magnetic field sensor is disposed at the air gap, and is used for detecting the remaining the magnetic flux. A voltage signal outputted by the magnetic field sensor is enabled to be zero through the adjustment of the current passing through a compensation coil wound around the magnetic rings. Because the remaining magnetic flux is smaller, the magnetic flux cannot be saturate in the magnetic rings, thereby enabling the whole measurement system to work in a linear region. The method can greatly reduce the size, weight and power consumption of the big-current measurement device, is high in accuracy, and is good in stability.

The invention relates to a stretching-bending combined-load in-situ nano-indentation test device and a method and belongs to the field of precision scientific instruments and material mechanical testers. The overall structure of the test device is in a crossing distribution form and comprises three parts, namely, a stretching loading module, a bending loading module and an indentation loading module, wherein the stretching loading module is arranged in the middle place; the bending loading module and the indentation loading module are respectively distributed on the two sides of the stretching loading module; each of the stretching loading module, the bending loading module and the indentation loading module comprises a driving component, a transmission component, an executing component and a displacement signal and force signal precise detecting component; the loading force lines of the stretching loading module, the bending loading module and the indentation loading module are in the same plane. The synchronous acquisition for the loading/displacement signals can be realized and the closed-loop control on a servo driving system can be realized. The device is smart in structure, is compatible with a mainstream optical microscope and is capable of realizing the multi-load in-situ test for a macroscopic test piece with the feature size above millimeter level.