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1067results about "Circuit-breaking switch contacts" patented technology
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Dynamic closed-loop management method for bridge-shaped contact performance
PendingCN121769771AEmergency protective arrangement detailsEmergency protective arrangements for automatic disconnectionHealth indexElectric power system
The invention discloses a dynamic closed-loop management method for bridge-shaped contact performance, and relates to the technical field of power system protection. The method comprises the following steps: S1, a dynamic sensing process: acquiring multi-source dynamic parameters of a bridge-shaped contact in a non-intrusive mode; s2, a quantitative evaluation process: fusing the multi-source dynamic parameters and the static parameters, and calculating a health index or a health level of the contact through a preset model; s3, adaptively optimizing the process, dynamically adjusting the closing energy or protection parameters of the circuit breaker according to the health state, and compensating the performance change of the contact; and S4, a predictive maintenance process: performing trend extrapolation based on the historical data of the health index, predicting the residual life and generating a maintenance suggestion. The processes are sequentially connected and cyclically iterated to form dynamic closed-loop management, so that the problems of one-sided parameter sensing, inaccurate evaluation, fixed parameters and maintenance lag in the prior art are solved, the operation reliability of the bridge-shaped contact is improved, the service life of equipment is prolonged, and the operation and maintenance cost is reduced.
Owner:YUEQING SUOTAI ELECTRIC
Miniature circuit breaker
InactiveCN119833364ASwitching device condition indicationProtective switch operating/release mechanismsScreen printingInjection moulding
The invention provides a miniature circuit breaker, which comprises a shell, a handle, a connecting rod, a contact support, a lock catch, a lock catch elastic piece and a support elastic piece, and is characterized in that the shell is provided with an indication window; the handle is rotationally mounted on the shell; the connecting rod is provided with a first rod part connected with the handle and a second rod part matched with the contact support; and the contact support is rotationally installed on the shell through a rotating shaft, and a first indicating part which can be arranged corresponding to the indicating window is formed on the contact support. In an opening state, the first indication part of the contact support is arranged corresponding to the indication window. In a switching-on state, the second indicating part of the lock catch corresponds to the indicating window, and the contact support and the lock catch are different in color during injection molding, so that compared with the prior art in which indicating surfaces with different colors need to be processed on the contact support in an ink screen printing manner after injection molding, the production process is simpler, and the production efficiency is improved. And the production cost is reduced.
Owner:WENZHOU KEYU ELECTRIC CO LTD
Circuit breaker
PendingCN120727521AProtective switch terminals/connectionsCircuit-breaking switch contactsModular designProcess engineering
A circuit breaker comprises a circuit breaker body, and accessories which can be selectively and additionally arranged on the circuit breaker body at least comprise an air outlet groove accessory, an arc striking row accessory, a bottom cover and a dustproof cover accessory. The beneficial effects of the invention are that the technical scheme achieves the selectable installation of accessories through the modular design, and remarkably improves the applicability and flexibility of the circuit breaker. A user can flexibly combine the accessories according to actual use scenes (such as different environments or functional requirements), so that the purchase of unnecessary components is avoided, and the initial cost is reduced; meanwhile, a subsequent installation mechanism allows a user to gradually expand functions when demands change, the whole circuit breaker does not need to be replaced, and resource waste is reduced.
Owner:乐清跃界工业设计工作室(个体工商户)
Power supply control mechanism
ActiveCN223450817UProtective switch operating/release mechanismsCircuit-breaking switch contactsControl theoryContact mechanism
The utility model relates to the field of low-voltage electric appliances, in particular to a power supply control mechanism, which comprises a reset button, a tripping rod, a tripper, a control module and a switch contact system. When the reset button is at the hasp position or the release position, the switch contact system is switched on or switched off; a switch moving contact mechanism of the switch contact system comprises a contact support, a switch moving contact and a switch moving contact spring; in the process that the reset button moves to the hasp position, the switch moving contact mechanism is firstly driven to move to enable the switch moving contact to be in initial contact with the switch static contact, and then the contact support and the switch moving contact are driven to move relatively to enable the switch moving contact spring to store energy; in the process that the reset button moves to the tripping position, the switch moving contact spring releases energy to enable the switch moving contact and the contact support to recover limiting fit; according to the power supply control mechanism, the current-carrying capability and the arc-resistant capability of the switch contact system are good.
Owner:ZHEJIANG CHINT ELECTRIC CO LTD
Contact system of molded case circuit breaker
The utility model discloses a contact system of a molded case circuit breaker. The contact system comprises a moving contact group and a conductive bracket, the device further comprises a hinge shaft and an elastic clamp. The conductive support comprises a first support arm and a second support arm. The movable contact group is located between the first support arm and the second support arm, and the two sides of the movable contact group are attached to the inner surfaces of the first support arm and the second support arm respectively; the hinge shaft passes through the movable contact group, the first support arm and the second support arm, so that the movable contact group is hinged to the first support arm and the second support arm. The elasticity of the elastic clamp is better than that of the conductive support. The elastic clamp comprises a first elastic arm and a second elastic arm. The first elastic arm abuts against the outer surface of the first support arm, and the second elastic arm abuts against the outer surface of the second support arm, so that the inner surfaces of the first support arm and the second support arm are in stable contact with the moving contact group. The conductive film has the characteristic of relatively good conductive performance.
Owner:ZHEJIANG DELING SCI & TECH
Rotating shaft structure of double-breakpoint molded case circuit breaker
ActiveCN224053117UProtective switch operating/release mechanismsCircuit-breaking switch contactsButt jointControl theory
The utility model relates to the technical field of circuit breaker structures, in particular to a rotating shaft structure of a double-breakpoint molded case circuit breaker, which is characterized in that a rotating shaft main body is of an integral structure design, a contact groove is formed in the rotating shaft main body along the radial direction, the middle part of a moving contact is inserted into the contact groove, and two ends of the moving contact penetrate out along an opening of the contact groove; the static spring shaft and the moving spring shaft are used for being in butt joint with the static contact, the static spring shaft and the moving spring shaft are located on the two sides of the moving contact respectively, the two ends of the contact spring are connected to the static spring shaft and the moving spring shaft respectively, and the moving spring shaft is pulled through elastic tension of the contact spring so that the two sides of the moving contact can abut against the inner side wall of the contact groove respectively. Due to the integral structure design of the rotating shaft main body, the three-phase synchronism of the molded case circuit breaker is consistent, the limit breaking capacity and the operation breaking capacity of the circuit breaker are greatly improved, the safety and the reliability of the circuit breaker in operation are improved, and the electrical life of the circuit breaker is prolonged.
Owner:ANDELI GRP
Circuit breaker
PendingCN120511176AProtective switch operating/release mechanismsCircuit-breaking switch contactsCouplingControl theory
The circuit breaker comprises a moving contact, a static contact, an operating mechanism, a rotating shaft, a traction rod and a push rod, the traction rod is rotatably connected to the operating mechanism, and the push rod is rotatably and slidably connected to the rotating shaft. The moving contact is rotatably connected to the rotating shaft and has a coupling state and an electric repulsive force state; in the coupling state, the moving contact and the static contact are mutually coupled; and in the electric repulsive force state, the moving contact and the static contact are mutually disconnected, and the moving contact swings, acts on one end of the push rod and drives the push rod to move, so that the other end of the push rod acts on the traction rod and drives the traction rod to rotate, thereby realizing the tripping of the operating mechanism. The push rod can rotate and slide on the rotating shaft, so that the push rod can move quickly to realize quick opening of the circuit breaker; the push rod is high in movement stability on the rotating shaft, and the push rod can be conveniently installed on the rotating shaft.
Owner:ZHEJIANG CHINT ELECTRIC CO LTD
Circuit breaker
PendingCN120637170AProtective switch terminals/connectionsProtective switch operating/release mechanismsElectrical conductorElectric equipment
The invention provides a circuit breaker, and relates to the technical field of electrical equipment. The circuit breaker comprises a moving contact, a static contact, a first connecting conductor and a second connecting conductor, the first connecting conductor comprises a first connecting section, a flexible connecting section and a second connecting section which are connected in sequence, the first connecting section is used for being fixedly arranged on an installation shell and used for being connected with an external electrical element, and the second connecting section is connected with the moving contact. The moving contact moves synchronously along with the moving contact; the static contact is connected with the second connecting conductor; under the condition that the moving contact and the static contact are switched on, the first connecting section, the flexible connecting section, the second connecting section, the moving contact, the static contact and the second connecting conductor form a conductive loop, and the current direction of the first connecting section is opposite to that of the second connecting section and is the same as that of the second connecting conductor. The purpose of enhancing the contact pressure of the contact by using the electromagnetic force generated by the current in the closing state is achieved, so that the short-time tolerance performance and the operation reliability of the circuit breaker are improved.
Owner:SHANGHAI LIANGXIN ELECTRICAL CO LTD +1
Integrated sealed primary and secondary fusion pole-mounted circuit breaker
ActiveCN120656904AContactsProtective switch operating/release mechanismsControl theoryArc extinction
The invention discloses an integrated sealed primary and secondary fusion pole-mounted circuit breaker in the technical field of circuit breakers, and the integrated sealed primary and secondary fusion pole-mounted circuit breaker comprises a case, a push-pull mechanism, a first elastic mechanism and a second elastic mechanism. A plurality of sets of insulating pull rods extending into the circuit breaker body are installed in the case in an up-down sliding mode, the push-pull mechanisms are fixedly installed in a plurality of sets of supports in the case in a rotating mode, and the top ends of the push-pull mechanisms are fixedly connected with the bottom ends of the insulating pull rods. The two sides of the support are symmetrically provided with two groups of first elastic mechanisms connected with the push-pull mechanism, and the problems that the speed of a movable contact block in an existing circuit breaker cannot be effectively buffered when the movable contact block rapidly gets close to or gets away from a static contact block, and the elastic mechanisms in the circuit breaker are inconvenient to efficiently synchronize energy storage and pressure release of a closing spring and an opening spring; and the operation efficiency, the reliability, the synchronism, the arc extinguishing performance and the like of the circuit breaker are not improved.
Owner:GREAT WALL ELECTRIC GRP ZHEJIANG TECH CO LTD
A circuit breaker
ActiveCN222749424UProtective switch operating/release mechanismsCircuit-breaking switch contactsControl theoryJumper
The utility model relates to a circuit breaker, including a base, a partition, an upper cover, an operating mechanism, an electromagnetic system and a leakage tripping mechanism, wherein the leakage tripping mechanism includes a leakage tripping device, the operating mechanism includes a handle, an L-pole contact seat, an L-pole moving contact arranged on the L-pole contact seat, an N-pole contact seat, an N-pole moving contact arranged on the N-pole contact seat, a lock and a tripping lock, in a closed state, a tripping rod extends out of an installation space, and when tripping, the lock rotates the tripping rod under the action of the electromagnetic system to retract the installation space, and the leakage tripping mechanism also includes a pull rod, the pull rod includes a fixed arm, a swing arm and a leakage pushing arm that are integrally formed or fixedly connected, and the fixed arm is connected to the lock. By adopting the above technical solution, the utility model provides a circuit breaker with a reasonable structural layout, flexible and smooth lock action, fast tripping speed, and a simple transmission structure between the leakage tripping device and the lock, good stability, and fast transmission.
Owner:ZHEJIANG AOELEC ELECTRICAL CO LTD
Plug-in circuit breaker
PendingCN120108983AElectric switchesProtective switch operating/release mechanismsElectronic switchControl theory
A plug-in circuit breaker comprises a shell, an operating mechanism, a static contact and a moving contact, a closing handle and an opening handle of the operating mechanism are respectively arranged on the shell in a sliding mode, a closing locking piece is assembled in a rotating mode and is respectively matched with the closing handle and the opening handle, the contact mechanism further comprises a contact spring, and the moving contact and the contact spring are respectively arranged in a rotating mode. When the closing handle is pressed to a closing position, the contact spring firstly drives the moving contact to switch on the contact mechanism and provide contact pressure for the moving contact, the closing handle then closes the solid-state electronic switch, the closing handle is in limiting fit with the closing locking piece, and when the opening handle is pulled to an opening position, the solid-state electronic switch is closed. The switching-off handle drives the switching-on locking piece to release the limiting cooperation with the switching-on handle, so that when the switching-on handle moves to the switching-off position, the solid-state electronic switch is firstly switched off, and then the moving contact is driven to switch off the contact mechanism. According to the invention, the mechanism of the operation mechanism is simplified, misoperation in the operation process can be prevented, and the reliability and the use safety of the product are improved.
Owner:CHINT LOW VOLTAGE ELECTRICAL TECH CO LTD
Miniature circuit breaker
ActiveCN223273202UProtective switch terminals/connectionsCircuit-breaking switch contactsAlloyElectric shock
The utility model discloses a miniature circuit breaker, which comprises a shell provided with an arc extinguish chamber. The arc extinguish chamber is connected with an upper arc striking sheet; the upper arc striking sheet comprises an upper arc striking sheet conductive section and an upper arc striking sheet arc striking section; the conductive section of the upper arc striking sheet is made of copper, and the arc striking section of the upper arc striking sheet is made of iron; the upper arc striking sheet conductive section and the upper arc striking sheet arc striking section are connected through a solder layer; a moving contact plate used for being matched with the upper arc striking sheet is arranged in front of the upper arc striking sheet, and an electric shock part used for being in contact with the upper arc striking sheet is arranged on the moving contact plate. The moving contact plate is made of copper-iron-phosphorus alloy.
Owner:WENZHOU ZIYAO ELECTRIC CO LTD
Power supply control mechanism
ActiveCN223450816UProtective switch operating/release mechanismsCircuit-breaking switch contactsControl theoryReset button
The utility model relates to the field of low-voltage electric appliances, in particular to a power supply control mechanism, a reset button of the power supply control mechanism is in hasp fit with a tripping rod and in transmission fit with a tripper, a control module is electrically connected with the tripper through a connecting circuit, and a switch contact system is connected in series in the connecting circuit; when the reset button is at the hasp position / tripping position, the switch contact system is switched on / off; in the switch contact system, a switch moving contact mechanism is linked with a reset button, and a switch static contact is provided with a first position and a second position. In the process that the reset button moves to the hasp position, the switch moving contact mechanism is firstly driven to move to make initial contact with the switch static contact located at the first position, and then the switch static contact is driven to move to the second position through the switch moving contact mechanism. When the reset button moves to the tripping position, the switch static contact is reset to the first position; according to the power supply control mechanism, the current-carrying capability and the arc-resistant capability of the switch contact system are good.
Owner:ZHEJIANG CHINT ELECTRIC CO LTD
Auxiliary contact device of molded case circuit breaker
ActiveCN222672945UProtective switch detailsCircuit-breaking switch contactsSlide plateCircuit breaker
The utility model relates to the technical field of auxiliary contacts of molded case circuit breakers, and discloses an auxiliary contact device of a molded case circuit breaker, which comprises a shell, the outer wall of the shell is fixedly connected with a cylinder, the output end of the cylinder is fixedly connected with a moving block, and the outer wall of the moving block is rotatably connected with a pull plate. A fixing plate is fixedly connected to the inner wall of the shell, a first linkage plate is rotationally connected to the outer wall of the fixing plate, the outer wall of the first linkage plate is rotationally connected to the inner wall of a pulling plate, a second linkage plate is rotationally connected to the inner wall of the pulling plate, and a limiting block is rotationally connected to the outer wall of the second linkage plate. According to the utility model, the output end of the air cylinder drives the moving block and the second linkage plate to rotate on the inner wall of the limiting block and the first linkage plate to rotate on the outer wall of the fixed plate so as to drive the sliding plate to slide on the outer wall of the first sliding rail, and then the contact body can be clamped and fixed through the first clamping block and the second clamping block; the effect of improving the stability of the contact body is achieved.
Owner:SHANGHAI TENGSHENG PUMP MANUFACTURING CO LTD
Manual tripping mechanism of leakage protection device
ActiveCN223108817UProtective switch operating/release mechanismsCircuit-breaking switch contactsControl theoryPush-button
The utility model relates to a manual tripping mechanism of a leakage protection device, which comprises an upper cover and a base which are covered with each other, a swing seat is movably arranged between the upper cover and the base, movable contact pieces are arranged on the left side and the right side of the swing seat, static contact pieces are arranged on the upper cover on the upper sides of the rear ends of the two movable contact pieces, and a lock catch seat is arranged on the front side of the swing seat. The upper end of the lock catch seat is rotatably matched on the upper cover, the lower end of the lock catch seat penetrates out of the base downwards, the lock catch seat is provided with a limiting step used for limiting the front side of the swing seat, and the lower side of the base is fixedly provided with a trip coil which is internally and movably matched with an ejector pin. One end of the ejector pin penetrates out of the tripping coil and is fixedly connected with a sliding ring facing the rear side of the lower end of the lock catch seat, and the upper cover is provided with a manual tripping button used for pushing the sliding ring to move forwards. The quick and reliable tripping action is realized, and the safety and multifunctionality of the product are improved.
Owner:WENZHOU WYNDHAM INTELLIGENT TECHNOLOGY CO LTD
Moving contact of direct current circuit breaker and contact system
ActiveCN222562606Uextend your lifeIncrease current capacityCircuit-breaking switch contactsContact systemCircuit breaker
The utility model provides a moving contact and a contact system of a direct current circuit breaker, the moving contact comprises two pieces which are respectively marked as a left moving contact and a right moving contact, the left moving contact and the right moving contact are symmetrically arranged, a gap exists between the left moving contact and the right moving contact, the left moving contact is provided with a left silver contact, and the right moving contact is provided with a right silver contact. A left silver contact is arranged on the left moving contact, a left arc contact is further detachably installed on the left moving contact above the left silver contact, a right silver contact is arranged on the right moving contact, a right arc contact is further detachably installed on the right moving contact above the right silver contact, an elastic piece is arranged between the left moving contact and the right moving contact, and through kidney-shaped holes are further formed in the left moving contact and the right moving contact. And the kidney-shaped hole is formed above the elastic piece. According to the utility model, the arcing contact is contacted before the silver contact in the closing process, and the silver contact is disconnected before the arcing contact in the opening process, so that the service life of the moving contact can be effectively prolonged, the moving contact has the characteristics of large current capacity and long service life, and the safety and reliability of the circuit breaker in the using process are improved.
Owner:JIANGSU KAIFAN ELECTRICAL APPLIANCES
Circuit breaker
PendingCN121687789AElectric switchesProtective switch operating/release mechanismsControl theoryContact mechanism
A circuit breaker relates to the technical field of low-voltage electrical appliances and comprises a shell, a handle, an operating mechanism and a contact mechanism, the shell is provided with a first rotating shaft and a second rotating shaft, the operating mechanism is mounted on the first rotating shaft and comprises a mechanism seat, a jump fastener and a lock fastener, the contact mechanism comprises a moving contact and a static contact, the moving contact is mounted on the second rotating shaft, and the static contact is mounted on the second rotating shaft. The handle and the jump fastener are connected through a first connecting rod. The jump fastener and the moving contact are connected through a second connecting rod. During normal switching-on or switching-off operation, the locking fastener is buckled with the tripping fastener, and the handle is driven to drive the mechanism seat to rotate around the first rotating shaft through the first connecting rod, so that the moving contact is driven to be close to or far away from the static contact through the tripping fastener and the second connecting rod; when a fault is tripped, the locking piece and the tripping piece are tripped, and the moving contact is driven to rotate around the second rotating shaft so as to be far away from the static contact. According to the circuit breaker, the operating mechanism and the moving contact are respectively arranged on different rotating shafts, and the motion decoupling of the operating mechanism and the moving contact is realized during fault tripping, so that the moving contact can be quickly broken.
Owner:SHANGHAI LIANGXIN ELECTRICAL CO LTD +1
Circuit breaker and power equipment
ActiveCN222785231USwitching device condition indicationProtective switch operating/release mechanismsElectric power equipmentPower equipment
The utility model provides a circuit breaker and power equipment. The circuit breaker comprises a shell, an operating handle, an operating mechanism, a moving contact assembly and a static contact. The moving contact assembly comprises a main shaft and a rotating rod which are rotatably connected with the main shaft. The moving contact is located at one end of the rotating rod away from the operating mechanism. The operating handle can control the operating mechanism to drive the main shaft to rotate, so that the moving contact is contacted with or separated from the static contact. The main shaft is provided with a boss, and the boss is used for driving the rotating rod to rotate, so that the moving contact is separated from the static contact. The main shaft is provided with a driving lever, and the driving lever can switch on or switch off the first microswitch. When the circuit breaker is in a closed state, the boss and the rotating rod are arranged in a spaced mode, and the shifting rod presses the first microswitch to enable the first microswitch to be kept on. During opening, the operating mechanism drives the main shaft to rotate, so that the driving lever is far away from the first microswitch and is disconnected before the moving contact is separated from the static contact, and the first microswitch switches a sent signal to adjust the voltage state of the power equipment in advance and ensure the stability of the output voltage.
Owner:HUAWEI DIGITAL POWER TECH CO LTD
Arc extinguishing system and circuit breaker
The invention relates to the technical field of low-voltage electric appliances, in particular to an arc extinguishing system and a circuit breaker. The arc extinguishing system comprises a shell and an arc extinguishing chamber; a mounting cavity is formed in the shell, and the arc extinguish chamber is arranged in the mounting cavity; a plurality of air outlet holes for exhausting air to the outside are formed in one end of the mounting cavity; the arc extinguishing chamber is provided with an arc extinguishing cavity; a pressure relief channel is further arranged in the mounting cavity, an inlet of the pressure relief channel is communicated with the arc extinguishing cavity, and an outlet of the pressure relief channel is communicated with the air outlet hole. Through the pressure relief channel, the problem that gas impacts the moving and static contacts to cause damage to the moving and static contacts can be avoided; the phenomenon that a large amount of gas carrying charged particles flows between the moving contact and the static contact to cause breakdown between the moving contact and the static contact can be relieved, and the breaking capacity of the arc extinguishing system is further improved; in addition, charged particles or electric arcs entering the pressure relief channel can be gradually cooled in the pressure relief channel, and therefore the arc extinction effect is improved.
Owner:SHANGHAI LIANGXIN ELECTRICAL CO LTD
Circuit breaker
PendingCN120183974AProtective switch operating/release mechanismsCircuit-breaking switch contactsContact systemArc extinction
A circuit breaker provided by the present invention comprises a housing and internal elements, the internal elements at least comprise an upper arc extinguish chamber, a lower arc extinguish chamber, a double-breakpoint contact system, a first wiring terminal, a second wiring terminal, an overload release, a mechanism and a rotating shaft, and the double-breakpoint contact system comprises a single-breakpoint moving contact, a double-breakpoint moving contact and a static contact. The mechanism drives at least one rotating shaft, the double-breakpoint contact system is arranged between the upper arc extinguish chamber and the lower arc extinguish chamber, and the single-breakpoint moving contact and the double-breakpoint moving contact are respectively driven by two rotating shafts. When the circuit breaker is subjected to breaking and manual operation opening, the mechanism drives the two sets of rotating shafts to move together so that the two breakpoints can be kept disconnected at the same time, the opening distance is large, the isolation performance is good, and high-short-circuit current under high voltage can be broken.
Owner:TIANJIN SVRUI INTELLIGENT ELECTRICAL CO LTD
Multi-phase independent breaking intelligent measurement switch
ActiveCN223193732UProtective switch operating/release mechanismsCircuit-breaking switch contactsCarrier signalElectronic component
Owner:ZHEJIANG CHINT ELECTRIC CO LTD
Split-phase independently controlled three-phase switch
ActiveCN120565354AProtective switch operating/release mechanismsCircuit-breaking switch contactsPower applicationControl engineering
The invention belongs to the technical field of power application, and aims to solve the problems that arc energy of an existing three-phase switch is difficult to accurately control and potential safety hazards exist when an electronic scheme is adopted. A split-phase independent control three-phase switch provided by the present invention comprises a switch body and three switch mechanisms, each switch mechanism comprises a shell, a handle, a linkage assembly, a moving contact assembly, a static contact, an arc extinguish chamber, a microswitch and a tripping assembly, the moving contact assembly and the arc extinguish chamber are both arranged in the closed shell, and the static contact assembly is arranged in the shell. The handle is connected with the moving contact assembly through the linkage assembly, the joint position of the moving contact assembly and the static contact is located in the arc extinguish chamber, and the linkage assembly is arranged to be capable of being connected with the microswitch when the moving contact assembly is connected with the static contact. The tripping assembly is set to enable the linkage assembly to drive the moving contact assembly to be separated from the static contact when the current reaches a set threshold value. The three-phase switch can accurately control arc energy, adopts a mechanical tripping mechanism to optimize a protection structure, and has no potential safety hazard.
Owner:JIANGSU DONGXI PERSIMMON TECH CO LTD +2
Circuit breaker
PendingCN119650377Aquick drawquick jumpProtective switch terminals/connectionsCircuit-breaking switch contactsElectrical conductorArc extinction
The invention provides a circuit breaker, which at least comprises an insulating shell and internal elements, the internal elements at least comprise an arc extinguish chamber, a static contact, a moving contact, a wiring terminal, an operating mechanism and an arc striking sheet, the arc extinguish chamber is formed by superposing a plurality of metal arc extinguishing grid sheets, and the arc striking sheet and the static contact are integrally arranged. The connecting conductor between the static contact and the wiring terminal is provided with at least one magnet yoke, the magnet yoke is U-shaped or U-shaped, and the opening of the magnet yoke faces the metal arc extinguishing grid sheet or / and the arc striking sheet of the arc extinguishing chamber. When current passes through the connecting conductor, a magnetic field can be generated at the opening of the magnet yoke, and the magnetic field acts on the metal arc extinguishing grid sheet or / and the arc striking sheet to quickly attract an electric arc so as to promote the electric arc to quickly jump; when the moving contact leaves the static contact and generates an electric arc, the metal arc extinguishing grid piece or / and the arc striking piece with the magnetic field accelerates the electric arc generated on the static contact to move towards the metal arc extinguishing grid piece or / and the arc striking piece, and the electric arc deionization effect is improved.
Owner:TIANJIN SVRUI INTELLIGENT ELECTRICAL CO LTD
A small circuit breaker
ActiveCN222749417UProtective switch terminals/connectionsProtective switch operating/release mechanismsCopper wireHemt circuits
The utility model discloses a small circuit breaker, including a shell, a handle and a multi-link mechanism, a first locking wire terminal is fixedly installed on one side of the inner part of the shell, the first locking wire terminal is electrically connected to an electromagnetic trip assembly, the electromagnetic trip assembly is electrically connected to a static contact, the handle is connected to a moving contact through a multi-link mechanism, and the moving contact and the static contact are matched, the moving contact is electrically connected to a bimetallic strip through a copper wire, and the bimetallic strip is electrically connected to a second locking wire terminal. The utility model adopts the above structure: the first locking wire terminal, the coil, the static contact, the moving contact, the copper wire, the bimetallic strip, the conductive bracket and the second locking wire terminal are sequentially formed into a conductive path, the lock buckle and the trip buckle are matched to form a stable support structure, if the trip buckle is pressed by the electromagnetic trip assembly or the bimetallic strip, the lock buckle and the stable support structure are destroyed, and then the circuit is tripped, which can play a role in cutting off the circuit when the circuit is short-circuited or overloaded.
Owner:ANHUI YOUQIANSHUO INTELLIGENT ELECTRIC CO LTD
Miniature circuit breaker
Provided is a miniature circuit breaker. The problem that an existing miniature circuit breaker is weak in breaking capacity is solved. The device comprises a shell, the movable contact piece is arranged in the shell; the arc extinguish chamber comprises an arc extinguish frame and arc extinguish grid sheets, the arc extinguish grid sheets are arranged on the arc extinguish frame, the number of the arc extinguish grid sheets is multiple, and arc extinguish notches are formed in the arc extinguish grid sheets; the movable contact piece is provided with a first position attached to the static contact piece and a second position separated from the static contact piece; the static contact piece comprises an arc striking part, the arc striking part is arranged in front of the arc extinguishing grid piece, and the projection of the end part of the static contact piece on the plane falls into the arc extinguishing notch of the arc extinguishing grid piece. The beneficial effects of the utility model are that the arc striking part is arranged in front of the arc extinguishing grid sheet, and the projection of the end part of the static contact sheet on the plane falls in the arc extinguishing gap of the arc extinguishing grid sheet, so that reliable and rapid arc striking can be realized, the arc can enter the arc extinguishing chamber for arc extinguishing, and even if particles are generated during arc extinguishing, the particles cannot fall on the arc extinguishing grid sheet to cause short circuit.
Owner:ZHEJIANG ETEK ELECTRICAL TECH CO LTD
Circuit breaker
ActiveCN223206201UContactsProtective switch operating/release mechanismsTorsion springElectric equipment
The utility model provides a circuit breaker, which belongs to the field of electrical equipment and comprises a shell and a connecting shaft fixed on the shell. The double-contact torsion spring comprises a first torsion spring and a second torsion spring which are connected with each other, and the first torsion spring and the second torsion spring have the same rotation direction and are arranged on the connecting shaft side by side; the double-contact torsion spring is provided with a connecting end and a free end, the free end comprises a first free end of the first torsion spring and a second free end of the second torsion spring, and the first free end is not connected with the second free end; the N-pole moving contact assembly is connected with the first free end; the L-pole moving contact assembly is connected with the second free end; when the double-contact torsion spring rotates, the N-pole moving contact assembly and the L-pole moving contact assembly can be driven to move at the same time, the contact pressure of the N-pole moving contact assembly and the contact pressure of the L-pole moving contact assembly can be controlled at the same time, the stability of the circuit breaker is guaranteed, assembling is convenient, and the manufacturing efficiency is improved.
Owner:DELIXI ELECTRIC
Residual current protection circuit breaker with backup protection mechanism
ActiveCN222914717UProtective switch operating/release mechanismsCircuit-breaking switch contactsRecloserInductor
The utility model relates to a residual current protection circuit breaker with a backup protection mechanism, which comprises a base, a middle cover, a surface cover, an operating mechanism, an automatic reclosing mechanism, three groups of contact modules and a mutual inductor module, one end of an outgoing line static contact of each contact module is provided with three conductive parts extending out of the contact box, the three conductive parts are respectively provided with three backup protection mechanisms matched with a draw bar of the operating mechanism, each backup protection mechanism comprises a magnet yoke, a support, an armature and a torsion spring, the support is respectively provided with two limiting arms abutting against one end of the armature, and the two limiting arms are respectively provided with a spring. A trigger arm is arranged at the position, corresponding to the position between the two limiting arms, of one end of the armature, acts along with the armature and abuts against the traction rod, and linkage matching of the traction rod and the armature is formed. The utility model has the advantages of simple structure, stable and reliable performance, good insulating property, low temperature rise, high assembly efficiency and small volume.
Owner:SHANGHAI MULLER ELECTRICAL APPLIANCES (GROUP) CO LTD +1
Closing device and circuit breaker
PendingCN120878512AProtective switch operating/release mechanismsCircuit-breaking switch contactsLow voltageControl theory
A closing device and a circuit breaker relate to the low-voltage electrical field. The invention provides a closing device, which comprises a handle and a contact assembly, and is characterized in that the contact assembly comprises a static contact group and a moving contact group which can be in contact with or separated from the static contact group, and the moving contact group is in transmission connection with the handle; the handle comprises a body and a quick-closing piece rotationally arranged in the body; and the driving handle rotates to drive the moving contact group to move towards the static contact group, and the quick closing piece can be in contact with the moving contact group, so that the moving contact group stores energy to realize quick closing. According to the switching-on device, rapid switching-on of the contact assembly can be realized through the processes of energy storage and energy release, so that abrasion to the contact is reduced, and the switching-on reliability of the contact and the performance of the circuit breaker are improved.
Owner:SHANGHAI LIANGXIN INTELLIGENT ELECTRIC CO LTD +1
Shunt release and splicing structure of shunt release and circuit breaker
ActiveCN223140697UProtective switch operating/release mechanismsCircuit-breaking switch contactsLap jointControl theory
The utility model provides a shunt release and a splicing structure of the shunt release and a circuit breaker, and relates to the technical field of electrical equipment, and the shunt release comprises a housing, an operating mechanism, a movable contact piece and a static contact piece. The operating mechanism comprises a handle, a connecting rod, a jump pin, a lock catch and a contact support, the handle is rotationally connected to the shell, the contact support is rotationally connected to the shell, the lock catch is rotationally connected to the contact support, the jump pin is rotationally connected to the contact support, and the jump pin is in lap joint with the lock catch; the lock catch is provided with a clamping groove, and a part of the contact support is located in the clamping groove. The other end of the connecting rod is rotationally connected with the handle; the moving contact is connected to the contact support; the static contact is connected to the shell; the handle can rotate between a first position and a second position so as to drive the movable contact piece to be in contact with or separated from the static contact piece. According to the shunt release, the contact support is directly connected to the shell through the first connecting shaft, a supporting piece is omitted, the number of parts is reduced, and the cost of the shunt release is reduced.
Owner:DELIXI ELECTRIC
Arc extinguishing system of molded case circuit breaker
The utility model relates to an arc extinguishing system of a molded case circuit breaker. The arc extinguishing system comprises an arc extinguishing chamber, an arc extinguishing grid sheet group, a short arc extinguishing grid group, an arc isolating piece, an arc isolating cover, an arc striking plate and a magnetism increasing plate, wherein the arc extinguishing grid sheet group is arranged in the arc extinguishing chamber, and one side of the arc extinguishing grid sheet group is provided with a moving contact abdicating space; the static contact is U-shaped, the front end is used for connecting the connecting plate, and the rear end is used for contacting with the moving contact; a short arc chute group is arranged below the arc chute sheet group; the end tab is connected to the rear end of the static contact and extends to the lower side of the short arc chute group; the arc-isolating cover covers the rear end of the static contact, and the arc-isolating piece covers the static contact and extends from the front end to be connected with the arc-isolating cover so as to wrap the static contact in an insulating manner. Compared with the prior art, through the ingenious structural design, all-around insulation protection on the static contact is achieved in a narrow space left between the static contact and the arc extinguish chamber, the breaking capacity of the circuit breaker is improved, the electrical service life of the circuit breaker is prolonged, a local magnetism increasing structure is additionally arranged, the breaking capacity is improved, the electrical service life of the circuit breaker is prolonged, and meanwhile cost is saved.
Owner:SHANGHAI RENMIN ELECTRICAL APP WORKS