68 results about "Static core" patented technology

A permanent magnetic contactor and its control device are used in starting switch control devices and engines and switching on and off the master circuit. A permanent magnetic steel is set between two static cores to form a U-like bulk, two iron cores connected in series and in a same polarity, a tower spring supports the framework of the packet, the top of the tower spring is connected with a dynamic core. The output over voltage protection part of said control device is connected with the rectification part, output of which is connected with a low-voltage judgment part the output of which is connected with a shut off executing part and the output of which is connected with the wire packet.

This invention discloses a magnet unit contactor with parallel magnetic circuit, which replaces the magnetic operation unit of an original contactor to a magnet operation unit, in which, the static core of the unit includes a U-static core, a magnet and a magnetic circuit static core, both ends of the static core are fixed with serial excitation coil, the magnet is inserted in the static core, when the structure is at the kept position, it overcomes the absorption force of the counter spring force, which is borne by the electromagnetic absorption and magnet absorption and the contactor is at the closed position, since parallel circuit is applied, flux generated by the serial excitation coil and that generated by the magnet flow through different paths separately, and the serial excitation coil flux passes through the minimum magnetic resistance to save energy of the magnet contactor.

The invention discloses a jetting head for a non-contact type large-character ink-jet printer. The jetting head for the non-contact type large-character ink-jet printer comprises an installation base, a jetting cavity, a jetting nozzle board, a static core module, a valve pipe module, a movable core assembly, a driving coil and a jetting head cable. The jetting nozzle board is sealed on the jetting cavity. A row of jetting holes are formed in the jetting nozzle board. The jetting cavity is connected with a jetting head ink supply pipe and a backflow pipe. The valve pipe module is fixed to the installation base. The static core module is connected with the installation base through the valve pipe module. Electromagnetic valves, independently controlling the jetting holes in the jetting nozzle board to jet ink, of ink droplets are formed by the static core module, the valve pipe module, the movable core assembly and the driving coil together, wherein the number of the electromagnetic valves is identical to that of the jetting holes in the jetting nozzle board. The jetting head for the non-contact type large-character ink-jet printer has the advantages of being simple in structure, high in interchangeability, convenient to repair, low in cost, good in performance, convenient to use, practical and safe.

The invention relates to a magnetic valve, comprising a valve seat, a sleeve fixedly connected with the valve seat, a coil arranged outside of the sleeve, a movable core arranged in the sleeve, a static core and a reset spring arranged between the movable core and the static core, wherein a sealing element is arranged at one end of the movable core opposite to the other end close to the static core, and a valve port is arranged at the side opposite to the sealing element in a valve body; and the sealing element comprises a major diameter part in the central cavity body at the end part of the movable core, a middle part and a minor diameter part which partially extends out of the central cavity body at the end part of the movable core. The magnetic valve also is provided with a balance channel passing through the sealing element, so that no pressure difference generates at the two sides of the sealing element, thus avoiding instable magnetic valve flow due to action of the sealing element resulted from the pressure difference, and solving the problem of larger stress of the sealing element, thereby reducing abrasion of the sealing element.

A mainstay type turbocharger electronically controlled pressure relief valve, the outer shaft sleeve of the moving iron core, the coil winding frame with the coil winding, and the guide seat are inlaid in the upper casing by injection molding, and the piston sleeve is inlaid in the moving body by injection molding. on the core. The inner shaft sleeve of the moving iron core is press-fitted in the shaft hole of the moving iron core, and the upper casing is set on the lower casing, and is connected with the lower casing by an interference fit. The static iron core is press-fitted in the shaft hole of the guide seat, the moving iron core is sleeved on the static iron core, and the outer circle of the moving iron core adopts dynamic fit with the shaft hole on the outer shaft sleeve of the moving iron core. The circumference of the lower casing is provided with two symmetrically distributed pressure relief holes, and the piston hole of the lower casing is provided with two guide columns, each of which is provided with a spring, and the baffle plate is installed on the guide columns through nuts. The sealing ring is installed in the annular groove on the outer circle of the baffle, and is in contact with the inner hole wall of the piston sleeve to play a sealing role. The piston sleeve inlaid on the moving iron core is installed in the piston hole of the lower casing, and two symmetrically distributed pressure relief holes are arranged at the end of the piston sleeve.

The invention discloses a punch forming device of guide grooves of an energy-absorbing box of an automobile anti-collision rod, which is used for solving the forming problem of the guide grooves. Thetechnical scheme is as follows: the punch forming device comprises a core die, a core die oil cylinder and punching oil cylinders, wherein the shape of the core die is matched with the shape of an inner cavity of the energy-absorbing box and is combined by an upper part and a lower part which are respectively a static core die positioned therebelow and a movable core die positioned thereabove; theinterface of the upper part and the lower part is a folding surface and divides concave dies corresponding to all guide grooves into an upper part and a lower part; the core die oil cylinder is positioned above the core die and a piston rod thereof drives the movable core die; the punch oil cylinders are four and respectively correspond to the guide grooves on the four surfaces of the energy-absorbing box; and each punching oil cylinder drives a punching die which is matched with the corresponding punching die. Compared with the traditional punching device, the punch forming device has high punching efficiency and simple operation, not only guarantees the quality of the energy-absorbing box, but also reduces the production cost.

A loudspeaker with a heat radiation function comprises a housing, a paper cone, an underframe, and a fixed connector; the housing is in a circular terrace shape, and a cavity is formed inside the housing; the housing upper undersurface is in a through state, the lower undersurface is in a sealed state, wherein the upper undersurface area is bigger than the lower undersurface area; a heat radiationassembly is arranged in the housing, and comprises radiating fins and a fixed device; the paper cone and the underframe are arranged in the housing; the underframe is arranged on the bottom of the paper cone, and comprises two cylinders called the first and second cylinders; the paper cone comprises a cone rack, a vibrating diaphragm, a dust shield, a static core support chip, and a voice coil; apermanent magnet is arranged on the paper cone bottom; the cone rack is a metal rack; a damping device is arranged on the housing upper undersurface; the loudspeaker has the heat radiation effect.

The invention discloses an upper end sealed fuel valve which comprises a lower shell (13) connected with an upper shell (1) in a sealing manner, wherein the lower shell (13) is internally provided with a ventilating hole. The upper end sealed fuel valve is characterized in that a baffle plate is arranged between the upper shell (1) and the lower shell (13), the top of a cavity of the upper shell (1) is fixed with a static core (2), a coil (4) with a magnet (6) is fixed under the static core (2), a movable core (3) is arranged in the coil (4), a pull rod (7) is fixed on the side wall of the movable core (3), a guide groove (14) is arranged on the side wall of the upper shell (1) along the vertical direction; the pull rod (7) penetrates through the guide groove (14) and extends out of the upper shell (1); the guide groove (14) is provided with a sealing cap (8); the bottom of the movable core (3) is fixed with a lower pull rod (10), the lower pull rod (10) extends into the lower shell (13) after penetrating through the baffle plate, the bottom of the lower pull rod (10) is fixed with an end cover cap (12) matched with the ventilating hole; and a spring (9) is arranged between the end cover cap (12) and the baffle plate.

The invention relates to the technical field of electric engineering and machinery and discloses a novel gas circuit breaker with real-time adjustable air pressure. According to the novel gas circuit breaker, a pressure sensor is arranged inside an arc extinguish chamber; a transmission rod, a movable core, a static core, a primary permanent magnet, a secondary permanent magnet, a coil and a non-magnetic material are arranged inside a novel magneto-electric mechanism; the arc extinguish chamber is connected with an insulating post; the insulating post is connected with the transmission rod; one end of a control system is connected with the pressure sensor, and the other of the control system is connected with the coil; the gas pressure measured by the pressure sensor is acquired in real time and is fed back to the control system; and the discharging mode of a capacitor is regulated through logical judgment of the control system. Compared with the previous permanent magnet mechanism, the novel magneto-electric mechanism has the advantages that the structure and the working principle are different, reasonable static characteristic curves can be provided, and high retaining force can be provided at the switching-on / off positions. The on-off success rate of the gas circuit breaker is improved, and the novel gas circuit breaker is simple in structure, convenient to maintain and low in economic cost.

The invention discloses an alternating-current high-voltage SF6 circuit breaker and a permanent-magnet operating mechanism thereof. The permanent-magnet operating mechanism comprises an interlocking crank arm, a closing mechanism, a transmission rod and an opening mechanism. When a closing mechanism of a permanent-magnet structure is powered and a movable core and a magnet are attracted each other, a movable rod moves towards a static core to drive the transmission rod to be swung to further drive the interlocking crank arm to rotate, closing is achieved, and the interlocking crank arm can compress an opening spring to store energy in the closing process. When reverse current is connected, a movable core and the static core are separated, force of the movable rod on the transmission rod isremoved, the opening spring releases energy, so that interlocking crank arm reversely rotates and resets, overall parts are less, and the mechanism is simple in structure. The alternating-current high-voltage SF6 circuit breaker needs small closing force, rapid closing can be achieved under the action of the permanent-magnet closing mechanism, and rapid opening can be ensured under the action ofthe opening spring in opening.

The invention discloses a separate magnetic circuit permanent magnetic mechanism contactor and a control unit thereof. A movable core comprises an electromagnetic circuit movable core (1), a movable core low magnetic conducting clapboard (2) and a permanent magnetic circuit movable core (3); a static core comprises a permanent magnet (4), a permanent magnetic circuit static core (5), a static core low magnetic conducting clapboard (6) and an electromagnetic circuit static core (7); and a coil comprises a trip coil (J2) and closing coils (JI) fixed at the two ends of the electromagnetic circuit static core (7). The control unit comprises a power module (P1), a capacitance voltage monitoring module (P2), a closing module (P3), an energy storage module (P4), a trip module (P5), a closing short-time conductive module (P6), the closing coils (J1) and the trip coil (J2). The permanent magnetic mechanism with separate magnetic circuit leads the permanent magnetic circuit to be separated from the electromagnetic circuit and not mutually affected; and the introduction of the closing short-time conductive module (P6) can reduce the volume of an energy storage capacitance, enhance the closing capacity of the permanent magnetic contactor, as well as ensure large volume and normal closing of the permanent magnetic contactor with a long opening distance.

The invention provides a radial flux hybrid stepping motor. The radial flux hybrid stepping motor comprises a stator portion, a rotor portion, a housing, a front end cover and a rear end cover. The stator portion comprises a stator core, stator windings, a stator inner static core, a permanent magnet and a magnetic modulation ring. The rotor portion is a rotating core and small teeth are uniformly distributed on the outer periphery of the rotating core. The stator core is mounted on the inner periphery of the housing, magnetic poles are distributed on the inner periphery of the stator core, the stator winding is arranged on a pole body of every magnetic pole, and small teeth in the same pitch with that of the teeth on the rotating core are evenly distributed on pole shoes of the magnetic poles. The rotating core rotates between the stator core and the stator inner static core. One end of the stator inner static core is connected to the front end cover. The permanent magnet is mounted on the stator inner static core. The magnetic modulation ring is mounted outside the permanent magnet. The permanent magnet radially magnetizes or parallelly magnetizes. The radial flux hybrid stepping motor is reasonable in structure, low in machining difficulty, high in permanent magnet utilization rate, capable of being analyzed and optimized through two-dimensional finite element software, small in rotor rotational inertia and high in motor operation efficiency.

The invention discloses a novel movable core used for an alternating current arc welding machine. Rectangular design is adopted, the novel movable core is provided with a plurality of stacks, the direction of the stacks is the same with the direction of a static core lamination stack; an adjusting screw rod at one side of the novel movable core is also provided with a small round nut, and the small round nut pulls backward and forward to adjust the direction of the stacks of the novel movable core. The novel movable core disclosed by the invention has the beneficial effects of smart design, simple structure, small space area, convenience in processing and mounting processes and low loss. A rectangle movable core design is adopted, and the problem that short circuit ring heat production is caused by the fact that the traditional trapezoid movable core is easy to collide with a static core under the condition of low current is thoroughly solved.

The invention relates to a magnetic valve, comprising a valve seat, a sleeve fixedly connected with the valve seat, a coil arranged outside of the sleeve, a movable core arranged in the sleeve, a static core and a reset spring arranged between the movable core and the static core, wherein a sealing element is arranged at one end of the movable core opposite to the other end close to the static core, and a valve port is arranged at the side opposite to the sealing element in a valve body; and the sealing element comprises a major diameter part in the central cavity body at the end part of the movable core, a middle part and a minor diameter part which partially extends out of the central cavity body at the end part of the movable core. The magnetic valve also is provided with a balance channel passing through the sealing element, so that no pressure difference generates at the two sides of the sealing element, thus avoiding instable magnetic valve flow due to action of the sealing element resulted from the pressure difference, and solving the problem of larger stress of the sealing element, thereby reducing abrasion of the sealing element.

The invention discloses a molded case circuit breaker, which comprises a casing, the casing is provided with a traction assembly, an adjustment screw, a bimetal sheet and a static iron core, the adjustment screw is fixedly connected to the bimetal sheet, and the static iron core is fixed to the bimetal sheet Connection, the traction assembly includes an instant draw bar and a delay draw bar, the instant draw bar includes a moving iron core and a fixed shaft, the position of the moving iron core corresponds to that of the static iron core, and the fixed shaft and the housing are axially fixed , the delay drawbar is set on the instant drawbar and the delay drawbar can move along the setting direction of the instant drawbar, and the position corresponding to the adjustment screw on the delay drawbar is provided with a slope interacting with the adjustment screw, The invention provides a molded case circuit breaker provided with a delay draw bar and an instantaneous draw bar, the delay draw bar and the instant draw bar are independent of each other, so as to achieve the effect of not affecting each other when adjusting the functions of the instant release and the delay release Purpose, to facilitate factory commissioning of molded case circuit breakers.

The invention discloses a static iron core. The static iron core is used for an electric horn, a stud is arranged in a center position at one end of the static iron core, a riveting part for fixation with a horn base is arranged on the end face of the static iron core and is located at the outer edge of the stud, and a groove is formed between the end face of the riveting part and the stud, so that the riveting part takes a shape of a continuous annular lug boss surrounding the stud. When the static iron core and the horn base are fixed, a riveting process can be adopted to fix the riveting part in the static iron core and the horn base, so that air gap precision between the riveting part and the horn base is greatly increased; a manual regulation procedure is not needed after machining is completed; and in a horn working process, the iron core is firm in fixation, so that an air gap value is always kept in a factory setting state, and the stability and the consistence of the horn arebetter guaranteed.

The invention discloses an electromagnetic switch for a starter, belongs to the start technology field of an engine starter and aims to solve a technical problem of contact arc caused by absorption of iron powder by a static contact existing in an electromagnetic switch for a starter in the prior art. The electromagnetic switch comprises a static core, a moving core, a coil, a contact plate, a static contact and a top rod, wherein the contact plate is fixed at one end of the top rod, the moving core is fixed at another end of the top rod, the moving core under the electromagnetic force generated by the coil moves to approach the static core, the contact plate and the static contact are made to realize contact through the top rod, and a bushing is arranged between the static core and the top rod. The electromagnetic switch is advantaged in that not only can the technical problem of contact arc caused by absorption of iron powder by the static contact existing in the electromagnetic switch for the starter in the prior art be solved, cleanliness of the contact is guaranteed, but also guiding precision of the top rod, high matching precision, low wear rate and long service life are realized.

The invention relates to a long life solenoid valve started with zero pressure difference. The long life solenoid valve comprises a valve seat, valve covers and a sleeve fixed to the valve seat and the valve covers in a threaded connection mode. A first sealing piece is arranged between the sleeve and the valve seat for sealing; static core iron is arranged on the upper portion of the sleeve; the sleeve is connected with the static core iron together in a welding mode; a movable core iron part and a guiding part are arranged on the lower portion of the static core iron; the guiding part is arranged in an inner cavity of the movable core iron part; a reset spring is arranged between the guiding part and the static core iron; a second sealing piece is arranged in the movable core iron part; and in the valve closing state, the lower portion of the second sealing piece is attached to a valve opening formed in the valve seat in a sealed mode. The reset spring abuts against the guiding part, the borne load impact on the sealing pieces in the valve body closing process can be reduced, and liquid impact is prevented, so that the life of a valve body is long; through the scheme, the requirement for electromagnetic force of a matched coil and manufacturing cost are greatly reduced, the characteristics of zero pressure difference valve opening of a direct-action type solenoid valve are inherited, and using is more stable and reliable.

The invention provides a bistable contactor with sector permanent magnets. The existing contactor has the disadvantages of slow response speed, low permanent magnet utilization rate, large space volume, and low holding force. The invention has a symmetrical structure and simple assembly; bistable magnetic holding, the holding force can be adjusted by changing the number of permanent magnets; the permanent magnetic flux does not have a short-circuit path by the static iron core or the lower yoke iron, which improves the utilization rate of the permanent magnet , which is beneficial to reduce the height of the permanent magnet and reduce the overall size of the contactor; the permanent magnet holding force and the closing spring reaction force cooperate with each other to make the contactor pull-in ampere-turns small, the pull-in power consumption is small, the pull-in time is short, and the response The speed is fast; the lower end surface of the armature is stepped to form the main and auxiliary pole surfaces. On the one hand, the large area of ​​the main pole surface is conducive to reducing the ampere-turns of the pull-in and shortening the pull-in time. On the other hand, the contact area between the auxiliary pole surface and the lower yoke is small. It improves the pull-in retention force, ensures reliable pull-in of the contactor, avoids misoperation, and helps reduce contact bounce and improve the electrical life of the contactor.

The invention discloses a motor starting device which comprises an arc extinguishing cover, a static core and a moving core arranged in the arc extinguishing cover, and a contact plate arranged above the arc extinguishing cover. Two ends of the bottom of the contact plate are provided with moving contact points. The top of the arc extinguishing cover is provided with static contacts which are corresponding to the moving contact points one to one. The static cores are in the shape of a hollow cylinder. An insulation sheath goes through the center of the static core and is internally provided with multiple parallel conductive wires. A conductive wire at the same side of the static core goes through the insulation sheath and then is split into two wire harnesses. Two sides of the static core are provided with two mounting grooves which are internally provided with wire connection bodies. The wire harnesses are connected to the wire connection bodies through a metal connection plate. The motor starting device provided by the invention has reasonable space utilization and can adapt to large impact current.

The invention provides a core box loose piece automatic mold release device. The automatic mold release device includes a static core box and a moving core box, wherein loose pieces are arranged between the static core box and the moving core box, and a pair of fixed rollers are arranged between loose pieces to constitute a loose piece assembly, which is embedded into the moving core box via a guide rail; a slipper guide rod is arranged between the two rollers, and is fixed on a guide rod fixation plate in inclined manner, and the guide rod fixation plate is fixed on the static core box via a bolt; and the static core box is provided in interior with an automatic core pushing device. The automatic mold release device drives the loose piece via a slope guide rod to move in direction perpendicular to the device, automatically pushes loose piece to predetermined working position during core making process, can realize automatic mold release of the loose piece from sand core to return to predetermined position, has convenience and rapidity, fundamentally overcomes defect of take-out of loose piece in conventional manual manner, and facilitates mechanical batch production and quality stabilization.

The invention discloses a driving circuit board of an IPM, and belongs to the technical field of circuit boards. The driving circuit board comprises a driving circuit board main body, wherein a reserved mounting hole is formed in the top part of the driving circuit board main body, and an elastic connecting sleeve is clamped in the reserved mounting hole. According to the driving circuit board, under the mutual cooperation of the designed structures such as a threaded rod, a threaded panel, a first supporting spring, a limiting clamping piece, a limiting locking piece, a second supporting spring and an anti-static core plate, on the basis of preventing the threaded rod from falling off, the driving circuit board main body can be supported to a certain extent, the embedded anti-static core plate replaces a surface mounting surge suppressor, and the anti-static core plate is implanted into the driving circuit board main body, so that static protection can be performed on the driving circuit board main body from the whole system, the space can be saved, the development time can be shortened, the reliability of the driving circuit board main body in the operation process is improved, and in the field of high-density integrated electronic circuit, the driving circuit board has a relatively high application prospect.

An electromagnetic disc brake and a traction machine equipped with the electromagnetic disc brake. The invention discloses an electromagnetic disc brake, which comprises a static iron core and a moving iron core interacting through electromagnetic force, a brake disc fixed to the main shaft, and a brake disc that cooperates with the moving iron core to clamp the brake disc. There are two moving iron cores, which are respectively located on both sides of the static iron core, and a brake spring is arranged between the two moving iron cores and the static iron core; The coil winding of the moving iron core; the brake disc and the brake plate are two sets, which are sequentially arranged outside the corresponding moving iron core. The static iron core, the two moving iron cores and the two brake plates are fastened through the connecting sleeve. It is connected with the static iron core through interference fit, and the connecting sleeve and the brake plate are riveted together. The invention has the advantages of small volume, safe and reliable use, and convenient maintenance.

The invention discloses an electrical structure for improving the rated short circuit current closing ability of a load switch. The electrical structure comprises a load switch electromagnetic mechanism control circuit. In the circuit, a closing coil is connected in series between the anode and cathode of a power supply and is internally provided with a moving core, a moving bracket and the moving core are arranged with an interval, the moving bracket is orderly connected to a closing rotation shaft, a connection rod and a vacuum arc extinguish chamber contact moving end. A spring sleeves the connection rod between the closing rotation shaft and a moving contact. A capacitor is connected between the anode and cathode of the power supply and is used for storing energy which is used for indirectly increasing the magnetic field of the closing coil in a closing moment. A magnetized moving core is in a magnetic connection with the moving bracket, and the moving bracket, the closing rotation shaft and a vacuum arc extinguish chamber moving contact are driven to be in linkage. According to the electrical structure, through adding corresponding electric components into an electromagnetic mechanism secondary circuit of the load switch, in the moment of energization and the closing of moving and static cores, the closing coil is assisted to generate power to drive the moving contact to move to close.

The invention discloses a novel air channel for an AC (alternating current) arc welding machine, which is used as a flowing channel of cooling air. The novel air channel comprises a wind shield, a box cover side plate and an upper surface of a transformer static core, wherein the bottom surface of the novel air channel is the upper surface of the transformer static core of the AC arc welding machine; the wind shield is arranged at the cooling air inlet end of the novel air channel; the wind shield is made by lengthening and widening a static core splint; and a rubber strip is also arranged between the wind shield and the box cover side plate so that the wind shield and the box cover side plate are tightly installed. The invention has the beneficial effect that: the wind shield is made by lengthening and widening the static core splint so as to enable the cooling air blown from the back to fully pass through the inside of a transformer core window of the arc welding machine, thereby improving the cooling effect of the arc welding machine.

The invention relates to a self-reset type overvoltage and undervoltage protection structure which comprises a moving contact, a moving contact bracket, a static core 1, a coil frame 1, a DC coil 1, a DC coil 2, a pressing spring 1, a static core 2, a magnetic yoke, a coil frame 2, a magnetic conductive plate, a pressing spring 2, a moving core, a left tension spring, and a right tension spring. When a line is in an overvoltage or undervoltage state, the DC coil 1 does not work, the DC coil 2 is instantaneously turned on and conducted, a generated magnetic field attracts the moving core, the moving core moves rightward to press the pressing spring 1 and the static contact to close and the moving contact is pushed, thus the moving contact is allowed to counterclockwise rotate for a certain angle around a spring pass dead spot position on the moving contact bracket, the spring passes a dead spot, finally a disconnection state is maintained, and the moving core returns to an original position under the reverse elasticity of the pressing spring 1, and vice versa. The self-reset type overvoltage and undervoltage protection structure is mainly used in a self-reset type overvoltage and undervoltage protector, the magnetic field generated by the coil is used to drive the moving core, thus the moving core pushes the moving contact, and the connection and disconnection of the moving contact and the static contact are realized.

The embodiment of the invention discloses an electromagnetic drive device and an electromagnetic relay; the electromagnetic drive device comprises a static core and a movable core, and comprises a core casing, a U-type yoke and a magnetic conductive plate; a core casing wire wraps the static and movable cores; the first end of the core casing is provided with the static core, and the second end isprovided with the movable core; the magnetic conductive plate is arranged outside the first end of the core casing, and makes contact with the static core; the first side of the U-type yoke makes contact with the magnetic conductive plate in a magnetic conductive mode, and the second side makes contact with the movable core in a magnetic conductive mode, thus enabling the static core, the movablecore, the magnetic conductive plate and the U-type yoke to form a magnetic loop; the core casing comprises the first portion between the second side of the U-type yoke and the movable core and the residual second portion, wherein the first portion is made of a magnetic conductive material, and the second portion is made of a nonmagnetic material. A magnetic conductive loop of an existing electromagnetic drive device has gaps, so the magnetic conductive effect is affected; the electromagnetic drive device and the electromagnetic relay can solve said problems.

The invention belongs to a static core code restraining lock of a pure mechanical elastomer structure. The static core code restraining lock comprises a lock core, a lock core sleeve, a code restraining groove, lock core elastomer holes, lock core first layer elastomers, a lock sleeve elastomer hole, lock sleeve second layer elastomers, an elastomer spring and a lock core key groove, wherein the code restraining groove of which the interior is wide, the exterior is narrow and the section is special shape horseshoe-shaped (trapezoid combined with rectangle) is additionally formed in the outer ends of the lock core entire row elastomer holes, is parallel to the lock core key groove, and penetrates through all the elastomer holes along center lines of the entire row elastomer holes; the lock core elastomer holes and the lock core first layer elastomers are designed as T-shaped step-shaped; and the lock sleeve second layer elastomers are designed as I shape of which the two ends are thick and the middle is thin. According to the static core code restraining lock, through the structural design, a user is only allowed to insert a key when the lock core is in the static state to release locking corresponding to all the elastomers to open the lock, if the user does not have the key, rotary force (a must for technical lock opening) applied to the lock core in the lock core opening direction by any unlocking tools triggers the technical unlocking prevention function preset between the code restraining groove and the second layer elastomers, unlocking action is prohibited by virtue of the static core, technical opening aimed at mechanical elastomer locks can be effectively restrained, and a super excellent burglary prevention effect is achieved.

The invention relates to an electromagnetic gas valve comprising a valve body and a shell. An electromagnetic component is arranged in the shell and comprises a movable core, a static core and an electric drive unit, a plurality of air inlets allowing gas to enter the valve body are arranged in the valve body, an insertion opening is arranged in the joint of the valve body and the shell, a second cavity is formed by downwards extending in the valve body along the direction of the insertion opening, the static core is fixedly arranged in the second cavity, one movable core is arranged in the second cavity and above the static core at a distance from the static core, the static core is provided with a through hole, a connecting shaft which can be matched with the through hole is arranged in a first cavity, the connecting shaft is connected with the movable core fixedly and connected with the static core movably, a gas baffle block is arranged at the bottom of the connecting shaft, a gas pipeline is arranged inside the valve body and below the gas baffle block, and the spacing distance between the gas baffle block and the gas pipeline is smaller than that between the movable core and the static core. After the gas baffle block is arranged, the gas baffle block are controlled to ascend and descend by vertical ascending and descending of the movable core and the static core under electromagnetic induction so as to cover the gas pipeline.