24results about How to "Reduce magnetic force" patented technology

The invention relates to the technical field of hearing aids, in particular to a hearing aid with a magnetic attraction design on a fishing line, which comprises a hearing aid main body, an ear mold arranged on one side of the hearing aid main body, a winding roller arranged at one end of an inner cavity of the hearing aid main body, the fishing line wound on the outer side of the winding roller, an attraction ball arranged at one end of the fishing line, and a magnetic block integrated in the attraction ball. The locking mechanism is arranged at one end of the hearing aid main body, the locking mechanism comprises two locking plates, and a plurality of brake blocks are arranged on the inner walls of the locking plates. According to the hearing aid, the spherical magnetic block is embedded into the tail end of the fishing line, so that the problems that a traditional hearing aid magnetic attraction device is abrupt in appearance and occupies internal space are solved; the hearing aid is simple in structure, the appearance of the hearing aid is kept smooth and attractive, the internal space is prevented from being occupied, and meanwhile, the spherical magnetic block is arranged at the tail end of the fishing line, so that the hearing aid can be fixed on clothes, a knapsack or other magnetic objects through the magnetic attraction effect, and the hearing aid cannot fall off accidentally.

The invention discloses an embedded part positioning and adsorbing device and an embedded part construction method, and relates to the technical field of embedded part construction.The embedded part positioning and adsorbing device comprises a frame, powerful magnets are installed on the frame, and the frame is used for being attached to a wood formwork and corresponds to an embedded part on the other side of the wood formwork; therefore, the embedded part is adsorbed and attached to the wood formwork. By the adoption of the technical scheme, the embedded part is attracted through the powerful magnet, the embedded part is made to be tightly attached to the wood formwork, then the surface of the embedded part after concrete solidification can be flush with the surface of the concrete, follow-up construction precision is improved, the overall scheme is simple, cost is low, and the good result rate is achieved.

The invention relates to the technical field of winding equipment, and particularly discloses a winding device for winding tape packaging, which comprises a rack, a material guide mechanism and a driving source for driving a material disc to rotate, the shaft pressing assembly comprises a middle block and rotating shafts elastically hinged to the left end and the right end of the middle block, the middle block is arranged at the front end of the rotating arm and located above the material belt, limiting rings are fixedly arranged on the sides, away from each other, of the rotating shafts, and an elastic rope is connected between the middle block and the rotating arm; the bending mechanism comprises two abutting parts arranged at the front end of the rotating arm, the two abutting parts abut against the two rotating shafts correspondingly to enable the rotating shafts to rotate, the pressing shaft assembly is switched between the unfolding state and the bending state, in the unfolding state, the two rotating shafts are in a coaxial state, the pressing shaft assembly is in butt joint with and disengaged from spoke holes through switching of the unfolding state and the bending state of the pressing shaft assembly, and the spoke holes are in butt joint with the spoke holes. Therefore, the pressing shaft assembly presses the end of the material belt or is separated from the end of the material belt.

The application discloses a kitchen sliding door, and aims to solve the problem that it is relatively inconvenient to open the sliding door when people are holding dishes with both hands. The technical scheme is as follows: the kitchen sliding door comprises a door frame and a door body, the door body is provided with a door handle capable of sliding inward, the door body is provided with a pushing device used for abutting against the door frame to push the door body to move, and the pushing device is connected with the door handle. The door handle is abutted against by the elbow or other positions, so that the door handle slides inward, the pushing device abuts against the inner wall of the door frame to push the door body to move, a gap is formed between the door body and the door frame, the user can insert the gap with the foot, the elbow or other positions, and push the door body to be completely opened, so that the inconvenient situation that the sliding door needs to be opened when people are holding dishes with both hands is reduced.

The present invention discloses a magnetic plate, comprising: a magnet plate, which includes a left area, a middle area and a right area in sequence along the width direction of the magnet plate, and the width of the left area and the right area are both 1 / 6 to 1 / 8 of the width of the middle area; multiple groups of magnetic steel components, each group of magnetic steel components is composed of multiple magnetic steels arranged along the length direction of the magnet plate, the length directions of the multiple magnetic steels are consistent with the length direction of the magnet plate, the widths of the multiple magnetic steels in each group of magnetic steel components are equal, and the multiple groups of magnetic steel components are arranged along the width direction of the magnet plate, the widths of the magnetic steel components in the middle area are equal, and the widths of at least some of the magnetic steel components in the left area and the right area are smaller than the widths of the magnetic steel components in the middle area. The present invention also discloses a method for making a magnetic plate. The magnetic force in the edge area of ​​the magnetic plate can be reduced, and the uniformity of the magnetic force of the magnetic plate can be improved.

This utility model discloses a magnetic template quick-change device, which relates to the technical field of template changing devices. It includes a fixing component, a template component at the top of the fixing component, the template component comprising a module, a second permanent magnet block fixedly installed at the bottom of the module, and locking grooves at both ends of the module. The fixing component includes a housing, a lifting cavity inside the housing, a partition fixedly installed in the middle of the lifting cavity, a lifting plate slidably connected inside the lifting cavity, a first permanent magnet block fixedly installed at the top of the lifting plate, wedges fixedly installed at both ends of the lifting plate, and limit grooves inside both ends of the housing. Locking blocks are slidably connected inside the limit grooves, with one end of the locking block located inside the locking groove, and a wedge groove at the bottom of the locking block. This utility model can stably fix the template component when power is off, preventing loosening and detachment, and has high practical value.

The utility model discloses an assembly type magnetic suction wood veneer quick dismounting structure which comprises a wall body and a wood veneer, a plurality of first magnets are arranged on the wall body, a plurality of magnetic suction units are arranged on the back face of the wood veneer, each magnetic suction unit comprises a containing groove and a second magnet, a fixing block is arranged in the middle of each containing groove, and the second magnets are arranged in the containing grooves. The second magnet is arranged on the end face of the fixing block, and a separating mechanism is movably arranged on the outer side of the fixing block. The separating mechanism is arranged at the bottom of the second magnet, when the wood veneer needs to be detached and separated, an ejection nut is rotated through a wrench to drive the sleeve to be ejected out, and the stripping force between the first magnet and the second magnet is gradually increased in the ejection process of the sleeve; and the magnets are separated by the sleeve and cannot be magnetically combined again, and the magnets on the edges of the wood veneers are sequentially separated, so that the overall magnetic force can be greatly reduced, the wood veneers can be quickly disassembled and separated by a single person through the structure disclosed by the utility model, and a large amount of manpower and material resources are saved.

The application discloses a short-circuit prevention valve seat high-frequency quenching induction coil and relates to the technical field of induction coils. The induction coil comprises an induction pipe, the induction pipe is bent in multiple turns, the induction pipe is divided into a wiring end and a separation end after being bent, further comprises an insulating pipe for reducing the magnetic force influence of the induction pipe, a center positioning mechanism for automatically clamping and correcting the workpiece during quenching, and a strength adjusting mechanism for adjusting the number of turns of the induction pipe. The short-circuit prevention valve seat high-frequency quenching induction coil can not only move synchronously with the induction pipe through the center positioning mechanism to improve portability, but also automatically corrects the position of the workpiece when the induction pipe is placed on the workpiece before quenching, so that the workpiece and the induction pipe are on the same center line, thereby improving the quenching uniformity. When the inclination angle of the induction pipe is too large, the induction pipe cannot be normally placed on the workpiece, thereby reminding the operator.

The present invention discloses a needle selection device for a circular weft jacquard machine, belonging to the technical field of jacquard machines, comprising a needle cylinder and a bottom ring 1 and a bottom ring 2 fixed to each other, the bottom ring 1 being fixedly mounted with a connecting seat, the connecting seat being mounted with a cam assembly, the needle cylinder being formed with a needle slot, the needle slot being mounted with knitting needles, intermediate needles and jacquard pieces from top to bottom, the knitting needles, intermediate needles and jacquard pieces being matched with each other, the bottom ring 2 being mounted with a needle selector and an auxiliary cam connected to the jacquard piece, the side wall of the needle slot being provided with and connected with a receiving slot, the receiving slot being connected with a resistance member for increasing the resistance of the jacquard piece, the resistance member being slidably connected with the receiving slot through a control member, the control member being used to change the corresponding area of ​​the resistance member and the jacquard piece. The needle selection device for a circular weft jacquard machine of the present invention ensures stability and accuracy during needle selection, while reducing the probability of accidental needle removal caused by vibration actuating the jacquard piece.

The utility model discloses a magnetic attraction support and a support assembly, the magnetic attraction support comprises a supporting member and a magnetic attraction assembly, and the supporting member is provided with a supporting surface; the magnetic attraction assembly comprises a driving part and a plurality of magnetic attraction parts, the magnetic attraction parts are located on the side, back to the supporting face, of the supporting part, at least part of the magnetic attraction parts are defined as first magnetic attraction parts, the first magnetic attraction parts can move relative to the supporting part, and the driving part is in transmission connection with the first magnetic attraction parts and used for driving the first magnetic attraction parts to move. Therefore, the opposite area between the first magnetic attraction part and the magnetically attractable part in the magnetically attractable equipment can be adjusted. Therefore, when the mobile phone is taken down from the magnetic bracket, the first magnetic part can be driven to move, so that the area opposite to the magnetically-attracted part in the magnetically-attracted equipment is reduced, and the magnetic force between the magnetically-attracted equipment and the magnetic bracket is reduced, so that the mobile phone is taken down more easily; therefore, the damage to the magnetically-attracted equipment and the magnetically-attracted bracket is reduced.

The utility model relates to the technical field of wireless sensor networks, and discloses a data collection device based on an industrial wireless sensor network, which comprises a box body, a side plate, a circuit board, a data receiver, a data processor, a data transmitter, an interface and the like, a thermistor is fixedly connected on the circuit board, an electromagnet is arranged inside the side wall of the box body, and the data receiver is connected with the thermistor. And a movable cavity is formed in the box body. When the temperature inside the data collection device is high, the temperature inside the data collection device can be sensed by the thermistor, the resistance value of the thermistor is reduced along with the rise of the temperature, the current of a circuit where the electromagnet is located is increased, the magnetic force of the electromagnet is increased, and at the moment, the electromagnet adsorbs the sliding plate; after the partition plate slides down, the through holes are opened, air convection is formed between the through holes in the two sides of the box body, and then heat dissipation in the box body is accelerated.

The utility model discloses a plug-in type rotary electronic connector, which comprises a connector A and a connector B. The connector A is internally provided with a first terminal group, and the connector B is internally provided with a second terminal group. The connector A is further provided with a positioning sleeve, the positioning sleeve is provided with multiple sets of deformation plates, the multiple sets of deformation plates are arranged in an annular array with the positioning sleeve as the axis, the connector B is provided with a fixing sleeve, and the multiple sets of deformation plates are matched with the inner wall of the fixing sleeve, so that the connector B is fixed to the connector A; the second terminal group is driven to sleeve the first terminal group; the beneficial effects of the utility model are that by using the cooperation mechanism of the deformation plate and the fixing sleeve, physical plugging and locking between the connector A and the connector B are ensured, and compared with a magnetic type connector depending on magnetic force, the connector is more reliable in the aspect of mechanical stability, especially in the case of vibration or impact.

The invention relates to the technical field of welding positioning devices, in particular to a welding positioning device for a steel structure arch bridge, which comprises an adjusting mechanism and two positioners, the peripheral wall surface of the positioner comprises a plurality of positioning surfaces which are connected end to end and are used for fixing workpieces; the adjusting mechanism is arranged between the two positioners and used for adjusting the distance between the two positioners and the included angle between the two positioners. The distance between the two positioners and the included angle between the two first side plates can be adjusted through the adjusting mechanism, so that the included angle between the positioning surfaces of the two positioners is changed; the flexibility is improved, and variable welding angle requirements in a welding task can be met; furthermore, after welding is completed, the first connecting rod rotates relative to the second connecting rod, the two positioners are driven to rotate relatively, the contact area between the positioners and the workpiece is reduced along with increase of the rotating angle of the positioners, and therefore the magnetic force between the workpiece and the positioners is reduced, and the positioners and the workpiece can be separated conveniently.

The utility model relates to cosmetic packing technical field, and disclose a kind of magnetic attraction type cosmetic lipstick replacement shell structure, including bottom disc, the top of bottom disc is fixedly installed with cylinder one, the top of bottom disc is equipped with circular groove one and cylinder two, the outer wall of cylinder one is equipped with spiral groove, the bottom of bottom disc is equipped with magnetic attraction assembly and bottom shell respectively, the outer wall of cylinder two is equipped with straight mouth groove, the inner wall of bottom shell is fixedly installed with outer tube, the outer wall of outer tube is equipped with U-shaped sliding slot, through the cooperation of strong magnet one and strong magnet two, through the cooperation of strong magnet one and strong magnet two, it is driven strong magnet one to realize and strong magnet two are separated by rotating threaded rod, and then reach strong magnet one and strong magnet two when replacing lipstick solid The weakening of magnetic force, to realize replacing lipstick solid more quickly, improve the environmental protection utilization of lipstick tube simultaneously, reduce the consumption capacity of using population.

The present invention relates to a dynamic magnetic damping device and an adaptive sliding door anti-sway system. The dynamic magnetic damping device is used for a sliding door, and the dynamic magnetic damping device comprises a magnetic damping structure and a magnetic attraction member separated from each other. The magnetic damping structure is used to be arranged at the lower part of the sliding door, and the magnetic attraction member is used to be arranged below the magnetic damping structure. When the sliding door switches from a static state to a moving state, the magnetic force between the magnetic damping structure and the magnetic attraction member decreases, and when the sliding door switches from a moving state to a static state, the magnetic force between the magnetic damping structure and the magnetic attraction member increases. The dynamic magnetic damping device can prevent the sliding door from shaking and ensure the stability of the sliding door.

The present invention relates to the technical field of welding positioning devices, and specifically to a welding positioning device for a steel structure arch bridge, which includes an adjustment mechanism and two positioners; the peripheral wall surface of the positioner includes a plurality of positioning surfaces connected end to end for fixing a workpiece; the adjustment mechanism is arranged between the two positioners, and is used to adjust the distance between the two positioners and the angle between the two positioners. The present invention can adjust the distance between the two positioners and the angle between the two first side plates through the adjustment mechanism, thereby changing the angle between the positioning surfaces of the two positioners; the flexibility is improved, and it can adapt to the changing welding angle requirements in welding tasks; further, after the welding is completed, the first connecting rod is rotated relative to the second connecting rod, driving the two positioners to rotate relative to each other, and as the rotation angle of the positioner increases, the contact area between the positioner and the workpiece decreases, thereby reducing the magnetic force between the workpiece and the positioner, so as to facilitate the separation of the positioner from the workpiece.

The utility model belongs to the technical field of cipher machines, and particularly relates to a cipher machine detection device which comprises a detection machine body, a display screen and a control button, the display screen is arranged on the upper surface of the detection machine body, the control button is located on one side of the display screen, and a magnetic plate is movably arranged in an inner cavity of the detection machine body. A magnetizing plate is arranged on the surface of the back of the detection machine body, an inserting groove is formed in the middle of the surface of the magnetizing plate, a fixing base is integrally formed on the side wall of the detection machine body, a stress application rod is rotationally arranged on the surface of the fixing base, and a triangular wedge is movably inserted into an inner cavity of the inserting groove; the novel detection machine body can be adsorbed on the surface of a metal object through the matching of the magnetic plate and the magnetizing plate, the detection machine body can be quickly fixed during detection, the triangular wedge pushes the magnetic plate to lift along the guide column through the inclined surface after detection, the magnetic plate is far away from the magnetizing plate, and the magnetic force on the magnetizing plate can be reduced, so that the detection machine body can be conveniently and quickly taken down, and the detection efficiency is improved. And the detection device and the cipher machine can be conveniently and quickly connected.

The invention discloses a maintenance device for fair-faced concrete construction, and relates to the technical field of constructional engineering maintenance equipment, the maintenance device comprises a frame, a shell, a water tank and wheels, a plurality of auxiliary components are installed in a roller, each auxiliary component comprises a water outlet pipe, a plug pin, a rotating plate, a support and a gravity block, and through the magnetic attraction force of a first magnet strip, the water outlet pipe is connected with the rotating plate; according to the concrete curing device, the inserting nails can be inserted into the covering layer more rapidly and accurately, so that the fixing efficiency of the covering layer is improved, it is guaranteed that the covering layer cannot slide or move in the laying process, and then the concrete curing quality is guaranteed; and when a gravity block rotates to the lower side of a roller, under the combined action of repulsive force and gravity of a second magnet strip and a magnet block, the gravity block is prevented from falling off or shifting. The sealing cover and the short pipe can be rapidly separated, the situation that the stability of the device is affected by vibration generated by movement of the device is avoided, concrete is evenly sprayed on a covering layer and concrete, the concrete curing effect is improved, and the problems of concrete cracking and the like caused by uneven curing are solved.

The invention relates to a failure protection type microwave switch, and relates to the technical field of microwave switches, the microwave switch comprises a connecting mechanism, the connecting mechanism comprises a base shell, a first terminal, a second terminal and a third terminal, and push rod conductive assemblies are arranged between the first terminal and the second terminal and between the second terminal and the third terminal; the swinging mechanism comprises a magnetic-conductive swinging part, and the middle part of the magnetic-conductive swinging part is rotationally connected with the base shell; the electromagnetic mechanism comprises a magnetic conductive plate, a magnetic conductive swing is located between the base shell and the magnetic conductive plate, two swing electromagnets are arranged on the magnetic conductive plate at intervals, the swing electromagnets and the push rod conductive assemblies are arranged in a one-to-one correspondence mode, and one end of the magnetic conductive swing is located between the corresponding push rod conductive assembly and the corresponding swing electromagnet; a permanent magnet is further arranged on the concentrating flux plate and located between the two swing electromagnets, and the distance between the permanent magnet and one swing electromagnet is smaller than the distance between the permanent magnet and the other swing electromagnet. The driving current of the swing electromagnet can be reduced.

The invention discloses a self-ventilation projection lamp and a ventilation method thereof. The self-ventilation projection lamp comprises a shell, an air inlet, an air outlet, an air outlet, a light source, a light source and a light source, the lampshade covers the opening of the shell, a light source assembly is arranged on the side, close to the shell, of the lampshade, and the light source assembly is fixedly connected to the inner wall of the shell and provided with a temperature sensor used for detecting the temperature of the light source assembly; the ventilation assembly is arranged corresponding to the ventilation hole and comprises a ventilation box, ventilation holes are formed corresponding to the ventilation hole, a movable groove is formed in the ventilation box, an electromagnet is arranged on the top wall of the movable groove, a sliding iron block is slidably connected into the movable groove, and an elastic piece is fixedly connected to the end, back on to the electromagnet, of the sliding iron block; one end of the elastic piece away from the sliding iron block is connected to the bottom wall of the movable groove; the sliding iron block abuts against the electromagnet in the initial state, and when the temperature rises, the electromagnet correspondingly weakens the magnetic force according to feedback of the temperature sensor, so that the sliding iron block gradually gets away from the electromagnet, and the vent hole is opened.

The utility model relates to a miniature gear motor rotor. The technical problem to be solved by the utility model is to provide the miniature gear motor rotor. According to the technical scheme, the rotor comprises a rotor rotating shaft assembly, an iron core assembly and a rotor bearing, the rotor rotating shaft assembly comprises a rotating shaft, a rotating shaft inner core and a rotating shaft end cover, an inner core imbedding hole is formed in one end of the rotating shaft, an inner core butt joint seat is arranged at the bottom of a rotating shaft water inlet hole, a butt joint seat threaded hole is formed in the inner core butt joint seat, and the rotor bearing is arranged in the butt joint seat threaded hole. And the rotating shaft inner core comprises an inner core main body, an inner core bearing boss and an inner core thread mounting part which are arranged in sequence. The motor rotor has the advantages that the rotor water inlet channel of the rotating shaft and the inner core water outlet hole structure of the rotating shaft inner core form circulating flow of cooling water, heat generated in the operation process of the motor rotor is effectively taken away, the temperature of the motor rotor in the operation process is remarkably reduced, attenuation of magnetic force of the powerful magnets is delayed, and the service life of the motor rotor is prolonged. And the problem of motor stalling or noise caused by overheating is reduced.

The utility model discloses a night lamp structure without installation. The installation-free night lamp structure comprises a night lamp support, the night lamp support comprises a containing base, a cavity is formed in the containing base, a light-emitting lamp tube is arranged in the cavity and embedded into the containing base, an adjusting assembly is further arranged at the lower end of the containing base, the adjusting assembly comprises a bottom plate, and the bottom plate is arranged on the bottom plate. A magnetic attraction base is arranged at the lower end of the bottom plate, folding plates are further symmetrically arranged on the two sides of the bottom of the bottom plate, the folding plates are rotationally connected with the bottom plate through rotating shafts, through the arranged magnetic attraction base, complex installation steps are not needed through use of the magnetic attraction base, and a user can directly place the night lamp in a proper position; meanwhile, the folding plate and the rotating shaft are used in cooperation, the height of the small night lamp can be adjusted, the height of the night lamp is increased, light can better cover a table top, shadows are reduced, and the sight is clearer during reading and writing.

The utility model discloses a high-speed magnetic separation roller which comprises two fixing plates, a roller body is rotationally connected between the two fixing plates through a connecting shaft, a magnetic ring is fixedly connected to the inner wall of the circumference of the roller body, and the connecting shaft at one end of the roller body penetrates through the fixing plates to be fixedly connected with a belt wheel. And connecting blocks are fixedly connected to one sides of the two fixing plates, a shell is fixedly connected between the two connecting blocks, a first scraping plate is fixedly connected to the side, close to the roller, of the shell, and a collecting part for collecting dirt scraped by the first scraping plate is arranged in the shell. According to the magnetic separation roller, magnetic powder can be prevented from being accumulated on the surface of the roller, the magnetic force of the magnetic separation roller is prevented from being reduced, the using effect of the magnetic separation roller is improved, the magnetic powder with dirt can be prevented from being scattered, the using effect of the magnetic separation roller is further improved, the surface of the roller can be cleaned more thoroughly, and the service life of the roller is prolonged. And the cleaning effect on the magnetic separation roller is improved.

The invention discloses a positioning device for deck welding, and proposes the following scheme, which comprises a bracket and a pair of decks, wherein a first base and a second base are installed at the bottom end of the bracket, a fixed column is installed on the first base and the second base, an electromagnet is connected to the fixed column, a slide is slidably connected to the bracket, a partition is slidably connected to the slide, a sliding cylinder is slidably connected to the partition, and a connected collecting frame is installed on the top of the sliding cylinder; the electromagnet adsorbs the deck after being energized, the electromagnet swings around the fixed column to control the state of the deck, pushes the deck so that its edge can keep parallel and contact with the partition, and the partition facilitates the reservation of a precise welding gap between the two decks, and during the welding process, a negative pressure is formed at the collecting frame through an air suction pipe, so as to facilitate the removal of smoke generated during welding, and the electromagnet slowly rotates around the fixed column to push the welded deck away, so as to facilitate the welding of the next deck, and the operation is convenient.