9results about How to "Increase electromagnetic force" patented technology

The application discloses a non-magnetic ring proportional pressure reducing electromagnetic valve for a hydraulic system, a first through hole, a second through hole and a first blind hole are formed in the valve body, a pressure relief hole and a pressure inlet hole are formed in the side wall of the valve body, the pressure relief hole and the pressure inlet hole are communicated with the first through hole, a working hole is radially formed in the side wall of the valve body, the inner end of the working hole is communicated with the first through hole, and the outer end extends to the outer surface of the valve body, a valve core is axially movably installed in the first through hole, and a fifth outer groove and a first annular protrusion are arranged on the outer periphery of the valve core, the first annular protrusion forms an annular gap with the inner wall of the first through hole, a coil assembly is arranged in the yoke, a stop iron is fixedly arranged in the yoke through a mounting plate, and a magnetic circuit optimization structure is arranged on the outer surface of the stop iron. The magnetic circuit optimization and the multiple anti-sticking and friction-reducing designs are integrated, the independent magnetic ring is cancelled, the structure is simplified, the electromagnetic force, the response speed and the service life of the electromagnetic valve are comprehensively improved, the processing difficulty is obviously reduced, and the application range of the electromagnetic valve is widened.

The application discloses a small-sized circuit breaker clapping type electromagnetic system with high magnetic efficiency, which comprises a magnetic yoke, and a armature is arranged above the magnetic yoke; the armature comprises a shaft pin part and a magnetic concentration part, and a recess part is further arranged on the magnetic concentration part; wherein the recess part is recessed towards the magnetic yoke. In summary, without reducing the magnetic increase of the magnetic yoke to the static contact rod, the recess part is arranged in the normal working air gap path of the armature, the distance from the current conductor is reduced, the electromagnetic force is larger and more concentrated in the working air gap, the magnetic path surface is larger, the suction is sufficient under low current (such as 32A and below), the action is sensitive, the magnetic flux leakage is minimum, and the large current working condition is considered.

The invention discloses a kind of carbon tank solenoid valve, it includes the valve mechanism (20) being arranged in valve housing (10), the valve mechanism (20) includes stator (21), armature (22) and coil assembly (23), wherein, the stator (21) and the armature (22) are arranged in a line, and with the coil assembly (23) side by side, the stator and the armature are arranged at the outside of the coil assembly (23) so as to be magnetized by the magnetic field induced by the coil assembly (23), whereby the armature (22) can be moved between the first position of closing the carbon tank solenoid valve and the second position of opening the carbon tank solenoid valve by the attraction between the stator (21) and the armature (22).The invention allows to increase the maximum number of turns of the coil by placing the stator outside the coil, thereby increasing the maximum ampere-turn ratio of the coil, improving the coil utilization rate, and increasing the electromagnetic force.

The utility model discloses a linear vibrator. The linear vibrator comprises a cylindrical shell with an internal accommodating space, a vibrator assembly, a stator assembly, an elastic piece, a circuit board and a T-shaped insertion piece, the elastic piece is in a plate shape and comprises an inner ring, an outer ring and an elastic arm spirally connected between the inner ring and the outer ring. The stator assembly is fixed in the shell, the circuit board is fixed outside the shell, and the vibrator assemblies are arranged in the stator assembly in a penetrating manner at intervals; at least three through holes are evenly formed in the positions, matched with the inserting pieces, of the upper side and the lower side of the axial direction of the shell in the circumferential direction at intervals, the radial length of the inserting pieces is larger than the radial depth of the through holes, and the inserting pieces are inserted into and stretch out of the through holes to clamp and fix the outer ring to the shell. And the vibrator assembly is elastically suspended in the accommodating space by connecting and fixing the inner ring. The linear vibrator is simple in structure, convenient to assemble and good in vibration performance.

This invention belongs to the field of machining technology and relates to a magnetic reluctance type dynamic hole cold extrusion device. It includes a housing with a magnetic loading assembly, which includes a support guide rail assembly on the housing. A cylindrical shot guide rail is mounted on the support guide rail assembly, and a coil is fitted onto the shot guide rail. A shot is fitted inside the shot guide rail. A mandrel assembly is located inside the housing on one side of the shot guide rail. The mandrel assembly includes a detachably connected boss mandrel and a non-boss mandrel. The end of the boss mandrel is used to connect to a mandrel. A guide buffer assembly includes a first mass block inside the housing. One end of the first mass block is connected to the shot, and the other end of the first mass block is connected to the end of the non-boss mandrel. At least one buffer block is provided on the first mass block, located near the shot. A limiting ring is fitted on the shot guide rail and is used to match the buffer block to achieve limiting. Using this invention, the mandrel is easy to disassemble, the surface quality is high, and the working efficiency is high.

The application belongs to the technical field of low-voltage electrical apparatus, and particularly provides a low-power under-voltage release based on high-end NMOS driving, which comprises a surge absorption circuit, a rectification circuit, a DC / DC circuit, a voltage detection and release driving circuit, a starting time control circuit, a starting current control circuit, a release control circuit and a release coil; the rectification circuit is connected with the surge absorption circuit, the DC / DC circuit and the starting current control circuit respectively; the DC / DC circuit is further connected with the voltage detection and release driving circuit and the starting time control circuit respectively; the voltage detection and release driving circuit is further connected with the release control circuit; the release control circuit, the starting time control circuit and the starting current control circuit are sequentially connected; and the release control circuit and the starting current control circuit are both connected with the release coil. The low-power under-voltage release based on high-end NMOS driving has the advantages of low power consumption, long service life, stable action voltage and the like.

The present application relates to a kind of arc extinguishing assembly and circuit breaker comprising the arc extinguishing assembly, the arc extinguishing assembly includes: side member, at a certain distance apart from each other and oppositely configuration;Exhaust part, set in the upper portion of the side member;Multiple grids, set between the side member, and both ends are fixed to each side member;Arc guider, one side is combined with the side member, set in the lower portion of multiple grids;And magnet, set as in the lower portion of multiple grids, both ends are combined with the side member respectively, and electromagnetic force is formed in the direction towards the grid.

The utility model discloses a miniature loudspeaker with double voice coils, which adds a planar voice coil between the diaphragm and the longitudinal voice coil, increases the overall electromagnetic force without substantially changing the size of the loudspeaker, cancels the upper magnetic guide plate of the main magnet to change the magnetic force distribution area and make more magnetic lines pass through the planar voice coil, so as to increase the overall electromagnetic force and improve the loudspeaker volume.

The utility model relates to the technical field of vibration motors, and discloses a linear vibration motor, which comprises an upper cover, a lower cover, a vibrator assembly, a stator assembly and an elastic piece, and is characterized in that the stator assembly comprises an upper annular support and a lower annular support which are split and symmetrically arranged, a magnetic conductive ring and a coil which are respectively fixed on the inner wall surfaces of the supports, and a circuit board fixed on the outer wall surfaces of the supports; the upper cover and the lower cover respectively cover the two ends of the support to form an accommodating space, and the vibrator assembly is elastically suspended in the accommodating space through the elastic pieces at the two ends of the vibrator assembly; a first annular mounting groove and a second annular mounting groove are oppositely and concavely formed in the inner wall surface of one side, far away from the upper cover and the lower cover, of the bracket, and plane mounting grooves are oppositely and concavely formed in the outer wall surface; the first mounting groove and the second mounting groove are radially communicated, and the second mounting groove is adjacent to the vibrator assembly; the magnetic conductive ring is embedded in the first installation groove, the coil is embedded in the second installation groove, and the circuit board is fixed in the plane installation groove. The vibration motor is simple in structure, convenient to assemble and high in vibration feedback performance.