Abrégé

The present invention relates to the field of low-voltage electric apparatuses, and specifically to an arc-quenching system and a circuit breaker comprising the arc-quenching system. In the arc-quenching system, a plurality of arc chutes within an arc-quenching chamber are arranged side by side in a first direction; in a third direction, an arc inlet and an exhaust port of the arc-quenching chamber are respectively located at two ends of the arc-quenching chamber; in a second direction, front permanent magnets and rear permanent magnets of a magnetism-generating structure are arranged opposite each other on two sides of the arc-quenching chamber; and the first direction, the second direction, and the third direction are perpendicular to each other. A left rear permanent magnet and a right rear permanent magnet among the rear permanent magnets are arranged side by side in the first direction, and a left front permanent magnet and a right front permanent magnet among the front permanent magnets are arranged side by side in the first direction; in the second direction, the left rear permanent magnet and the left front permanent magnet have the same poles opposite each other and are arranged on two sides of the left portion of the arc-quenching chamber, and the right rear permanent magnet and the right front permanent magnet have the same poles opposite each other and are arranged on two sides of the right portion of the arc-quenching chamber; and magnetic poles of the same group of permanent magnets facing the arc-quenching chamber are opposite. The arc-quenching system can be used for quenching direct and alternating current arcs, with no special requirements for the wiring direction of a circuit breaker.

Classes IPC  ?

• H01H 73/18 - Moyens pour éteindre ou supprimer un arc
• H01H 9/44 - Moyens pour éteindre ou empêcher des arcs entre pièces traversées par le courant utilisant des aimants de soufflage
• H01H 9/36 - Pièces métalliques

Abrégé

The present invention relates to the field of electrical low-voltage devices, and in particular to a contact system and an electrical switching device comprising same. The contact system comprises a main contact structure and at least one movable contact structure; the main contact structure comprises a main contact; the main contact comprises a main contact portion; the movable contact structure comprises a movable contact; the movable contact comprises a movable contact portion; when the main contact is located at a closed position, the main contact portion and the movable contact portion are connected to enable the main contact and the movable contact to be closed; the movable contact structure further comprises an elastic piece working in conjunction with the movable contact; and in the process of the main contact being disconnected from the movable contact, when the main contact portion drives the movable contact portion to move from an initial position to a disengaged position, the elastic piece stores energy such that the main contact continues to operate, and the elastic piece releases energy to drive the movable contact portion to reset to the initial position. The contact system and the electrical switching device have high breaking capacity.

Classes IPC  ?

• H01H 50/54 - Dispositions de contact
• H01H 50/60 - Contact mobile combiné rigidement avec un élément mobile de circuit magnétique
• H01H 19/14 - Organes moteurs, p. ex. bouton rotatif
• H01H 19/04 - EnveloppesCouvercles
• H01H 9/30 - Moyens pour éteindre ou empêcher des arcs entre pièces traversées par le courant

Abrégé

A contact unit and a rotary isolation switch. The contact unit comprises a housing and a contact mechanism provided in the housing, wherein the contact mechanism comprises a pair of stationary contact assemblies and a moving contact assembly, each stationary contact assembly comprising a stationary contact portion; arc-extinguishing systems are provided on either side of the contact mechanism, each arc-extinguishing system comprises an arc-extinguishing cover, one end of which serves as an arc inlet; the contact mechanism further comprises a shell, which has an accommodating cavity provided with two opposite openings, each opening being connected to one arc inlet; and the moving contact assembly and the stationary contact portions are mounted into the accommodating cavity, the moving contact assembly is located between the pair of stationary contact portions, and the contact mechanism and the arc-extinguishing systems on the two sides jointly form a relatively closed space. In the present invention, the contact mechanism and the arc-extinguishing systems on the two sides jointly form the relatively closed space, such that the arc generated by the contact mechanism flows in the relatively closed space, thereby improving the arc-striking and arc-quenching effects.

Classes IPC  ?

• H01H 33/73 - Interrupteurs comportant des moyens séparés pour diriger, obtenir ou augmenter l'écoulement du fluide extincteur d'arc comportant des organes fixes pour diriger l'écoulement du fluide extincteur d'arc, p. ex. chambre d'arc dans lesquels la coupure s'opère dans de l'air à pression atmosphérique, p. ex. à l'air libre
• H01H 33/18 - Moyens pour éteindre ou empêcher des arcs entre organes traversés par le courant utilisant des aimants de soufflage

Abrégé

The present invention relates to the field of low-voltage electric devices, and in particular to a contact system and an electric switch device comprising the contact system. The contact system comprises a main contact structure and auxiliary contact structures which are respectively pivotally arranged and synchronously rotate; two auxiliary contact structures are respectively arranged on two radial sides of the main contact structure, and rotate synchronously with the main contact structure so that the contact system is closed or opened. The contact system has a fast breaking speed, large clearance, and a strong breaking capability.

Classes IPC  ?

• H01H 71/46 - Mécanismes de déclenchement automatique avec ou sans déclenchement manuel comportant des moyens pour actionner des contacts auxiliaires en complément aux contacts principaux

Abrégé

A contact unit and an isolation switch. The contact unit comprises a housing and a contact mechanism arranged in the housing; the contact mechanism comprises a moving contact assembly and a pair of static contact assemblies; the moving contact assembly comprises a contact support, the contact support is provided with a pair of moving contact parts, and the contact support drives the moving contact parts to correspondingly match static contact parts of the static contact assemblies; the housing is provided with a swing limiting groove, a swing supporting part protrudes from the center position of the contact support, the swing supporting part rolls along the side wall of the swing limiting groove, and the contour line of the rolling surface of the swing supporting part is an equal-width curve. According to the present invention, the swing supporting part separately rolls along the swing limiting groove to enable a moving track to be longer, so that the contact support obtains a larger linear speed.

Classes IPC  ?

• H01H 31/02 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs Détails

Abrégé

A circuit breaker operating mechanism and a circuit breaker. The circuit breaker operating mechanism comprises: a frame (1), wherein an energy storage unit (2), an opening and closing transmission unit (3) and a tripping transmission unit (4) are arranged in the frame (1); and a ready-to-close indicator (5) rotatably arranged on the outer side of a side plate (11) of the frame (1), wherein the ready-to-close indicator (5) comprises an indicator body (51), and a first linkage portion (52) that can be linked to the energy storage unit (2), a second linkage portion (53) that can be linked to the opening and closing transmission unit (3) and a third linkage portion (54) that can be linked to the tripping transmission unit (4) are arranged on the indicator body (51); when the energy storage unit (2) is in an energy storage state, the opening and closing transmission unit (3) is in an opening state and the tripping transmission unit (4) is in a free state, the ready-to-close indicator (5) is displaying a closeable state; and when the energy storage unit (2) is in an energy release state or the opening and closing transmission unit (3) is in a closing state or the tripping transmission unit (4) is in a non-free state, the ready-to-close indicator (5) is displaying a non-closeable state.

Classes IPC  ?

• H01H 71/04 - Moyens pour indiquer l'état du dispositif de commutation

Abrégé

The present invention relates to the field of low-voltage electrical appliances, and in particular to an operating mechanism and a switching apparatus comprising the operating mechanism. In the operating mechanism, a main shaft is configured to rotate around a center line o-o to switch among a first position, a middle position and a second position; a connecting rod is used for driving a moving contact structure to rotate so as to be connected to and disconnected from a static contact structure and is configured to rotate around the center line o-o to switch between a third position and a fourth position; when the operating mechanism is in a closed state/open state, the main shaft is located at the first position/second position and the connecting rod is located at the third position/fourth position; the main shaft is driven by external force to rotate towards the middle position, so that an energy storage structure stores energy, and the connecting rod is kept static; when the main shaft passes the middle position, the energy storage structure releases the energy to drive the main shaft and the connecting rod to rotate in opposite directions. The operating mechanism has a simple structure and increases the rotation angle of the connecting rod; and the switching apparatus uses the operating mechanism, thereby improving the performance of an electrical appliance and reducing the specification size.

Classes IPC  ?

• H01H 3/02 - Organes moteurs, c.-à-d. pour actionner le mécanisme d'entraînement par une force mécanique extérieure à l'interrupteur
• H01H 3/30 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur à ressort

Abrégé

The present invention relates to the field of low-voltage electrical appliances, in particular to an operating mechanism and to a rotary disconnect switch comprising the operating mechanism. The operating mechanism comprises: a mechanism support; a connecting rod structure; a driving shaft structure and a rotating shaft which are respectively and rotatably arranged on the mechanism support; and a transmission structure. The driving shaft structure is in transmission connection with the connecting rod structure by means of the transmission structure; the connecting rod structure is in transmission connection with the rotating shaft, so as to drive the rotating shaft to rotate in a reciprocating manner; the rotating shaft is in transmission connection with a support shaft for bearing a movable contact, so as to drive the support shaft to rotate in a reciprocating manner; and the connecting rod structure comprises a fastener structure, which has a fastened state and a released state. The operating mechanism further comprises a transmission rod, wherein the rotating shaft and the support shaft are both rotatably arranged around an axis, two ends of the transmission rod are respectively connected to the rotating shaft and the support shaft, and the transmission rod is positioned on one side of the axis and is arranged parallel to the axis. The operating mechanism and the rotary disconnect switch have a simple structure and good reliability.

Classes IPC  ?

• H01H 3/46 - Mécanismes-moteurs, c.-à-d. pour transmettre la force motrice aux contacts utilisant une liaison par tige ou levier, p. ex. une genouillère
• H01H 3/02 - Organes moteurs, c.-à-d. pour actionner le mécanisme d'entraînement par une force mécanique extérieure à l'interrupteur

Abrégé

A contact system, a contact unit and a breaker. The contact system comprises a moving contact assembly and a pair of static contact assemblies which are arranged in a housing. The moving contact assembly comprises an arc isolating part which is rotationally assembled, a contact slot is provided in the arc isolating part, and a pair of moving contact parts are arranged in the contact slot. Each static contact assembly comprises a static contact part extending into the contact slot. The arc isolating part rotates to drive the pair of moving contact parts to be, in the contact slot, in contact with or separated from the static contact parts of the static contact assemblies. A pair of mounting grooves communicated with the contact slot is further provided in the edge of the arc isolating part, and, at least on the end face of one end of the arc isolating part, each mounting groove is provided with a notch used for containing a static contact part. In the present invention, when the contact system is being assembled, the static contact parts of the static contact assemblies are correspondingly placed in the notches, so that there is no need to lift the static contact parts to place same at a proper angle in the contact slot, simplifying the steps of assembly of the contact system, making operations convenient, and allowing for automatic assembly, thereby helping to reduce cost.

Classes IPC  ?

• H01H 1/20 - Contacts pontants
• H01H 1/58 - Connexions électriques avec ou entre contactsBornes
• H01H 9/34 - Éléments fixes pour restreindre ou sous-diviser l'arc, p. ex. plaques-barrières
• H01H 9/30 - Moyens pour éteindre ou empêcher des arcs entre pièces traversées par le courant

Abrégé

The present invention relates to the field of low-voltage electric appliances, and in particular to a circuit breaker. The circuit breaker comprises a circuit breaker housing, and an operating mechanism, a contact system, a wire inlet terminal, a wire outlet terminal, an arc extinguishing chamber and a thermomagnetic tripping mechanism which are arranged in the circuit breaker housing. The contact system comprises a first contact structure and a second contact structure which are synchronously and rotationally arranged. An operating member of the operating mechanism, the contact system and the arc extinguishing chamber are sequentially arranged in the height direction of the circuit breaker. In the length direction of the circuit breaker, the wire inlet terminal and the wire outlet terminal are located at two ends of the circuit breaker, the contact system and the arc extinguishing chamber are located between the wire inlet terminal and the wire outlet terminal, the contact system and the arc extinguishing chamber are located on one side of the thermomagnetic tripping mechanism, the wire inlet terminal or the wire outlet terminal is located on the other side of the thermomagnetic tripping mechanism, and the first contact structure and the second contact structure are arranged side by side. The internal layout of the circuit breaker is more reasonable, and a larger assembly space is provided for the arc extinguishing chamber.

Classes IPC  ?

• H01H 73/18 - Moyens pour éteindre ou supprimer un arc

Abrégé

The present invention relates to the field of low-voltage electrical appliances, and relates in particular to an energy storage structure and a rotary isolation switch comprising said energy storage structure. The energy storage structure comprises an operating shaft that rotates between a closed position and an open position, a time-delay energy storage mechanism, and a locking mechanism. The time-delay energy storage mechanism comprises a first energy storage spring and a rotating disc that drivingly matches with the operating shaft and rotates between an energy release position and an energy storage position. The locking mechanism is used to lock the rotating disc at the energy storage position. When the operating shaft rotates from the open position to the closed position, the rotating disc follows the rotation of the operating shaft to rotate from the energy release position to the energy storage position, and meanwhile, drives the first energy storage spring to store energy. The rotating disc and the operating shaft are arranged coaxially. The rotating disc reaches the energy storage position when or before the operating shaft reaches the closed position. Remote opening control functions of the energy storage structure and a rotary isolation switch are reliable and stable.

Classes IPC  ?

• H01H 31/02 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs Détails

Abrégé

A quick tripping device of a circuit breaker having a contact system that includes a moving contact mechanism and a static contact, wherein the moving contact mechanism includes a contact support and a moving contact, and a contact spring having, two ends connected with the moving contact and the contact support respectively. The quick tripping device further includes a first transmission structure in driving fit with the contact spring and rotatable rotates along with the contact spring. When a short-circuiting current flows through the contact system, the moving contact is repelled by an electric repulsive force between the moving contact and the static contact, so that the moving contact rotates relative to the contact support. The moving contact drives the first transmission structure to rotate through the contact spring, and the first transmission structure drives an operating mechanism to trip.

Classes IPC  ?

• H01H 71/24 - Mécanismes électromagnétiques

Abrégé

Disclosed in the present application is a smart measurement circuit breaker, comprising a circuit breaker body, a connector and a smart module, wherein a first groove and a second groove are respectively provided in the circuit breaker body and the smart module; the connector comprises a first side and a second side arranged opposite each other. Detachable and fixed connections between the smart module, the circuit breaker body and the smart module are realized by means of guide grooves of the connector and the grooves, which enable flexible replacement when the smart module fails and reduces the replacement cost of the smart measurement circuit breaker.

Classes IPC  ?

• H01H 71/08 - BornesConnexions
• H01H 71/04 - Moyens pour indiquer l'état du dispositif de commutation

Abrégé

A circuit breaker that includes circuit breaker poles, an operating mechanism and a tripping system. Each circuit breaker pole includes a pole housing and a contact system that includes a moving contact mechanism and a static contact. The operating mechanism drives the moving contact mechanisms. The tripping system includes groups of tripping mechanisms and an adjusting mechanism. Each group of tripping mechanisms includes a conductive plate, a magnetic yoke and an armature. The conductive plate passes through the magnetic yoke. Each circuit breaker pole has a group of tripping mechanisms. Each contact system is electrically connected to a corresponding conductive plate Each adjusting mechanism includes a linkage rod. Each group of the tripping mechanisms includes an insulated transmission rod having one end inserted into the pole housing and connected to the armature, and another end that protrudes out of the pole housing and trips the operating mechanism.

Classes IPC  ?

• H01H 71/74 - Moyens pour régler les conditions dans lesquelles le dispositif doit fonctionner pour assurer la protection
• H01H 71/02 - BoîtiersEnveloppesSoclesGarnitures
• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement

Abrégé

An operating mechanism having a second operating shaft assembly a second transmission structure. One end of a second energy storage spring structure drives an energy storage shaft while the other end of the second energy storage spring structure is arranged rotatably. The second transmission structure is in driving fit with the energy storage shaft to drive the energy storage shaft to rotate, so that the second energy storage spring structure stores energy. The second energy storage spring structure releases energy after turning past a second dead center position to drive the energy storage shaft to rotate. The energy storage shaft includes an energy storage shaft gear, a power output structure includes a power output gear shaft, and the energy storage shaft gear is engaged with the power output gear shaft to drive the power output gear shaft to rotate.

Classes IPC  ?

• H01H 33/28 - Dispositions à énergie incorporée dans l'interrupteur pour actionner le mécanisme moteur
• H01H 33/42 - Mécanismes moteurs

Abrégé

An operating mechanism with a second connecting rod assembly that includes a second crank pivotally disposed around a tenth axis, a third connecting rod, and a third crank pivotally disposed around an eleventh axis. The second crank is rotatably connected to the third connecting rod through an eighth shaft, the third connecting rod is rotatably connected to the third crank through a ninth shaft, a first connecting rod assembly is rotatably connected to the second crank through a seventh shaft, and all the shafts and the axes are spaced in parallel. The tenth axis or the eleventh axis coincides with a rotation axis of a moving contact mechanism, and the eighth shaft or the ninth shaft rotates the moving contact mechanism. The operating mechanism provides a plurality of modes of connection with the moving contact mechanism, thereby facilitating the design of a contact system of the circuit breaker.

Classes IPC  ?

• H01H 71/52 - Mécanismes à réarmement manuel actionnés par un levier
• H01H 73/04 - Contacts

Abrégé

An operating mechanism, comprising: a main shaft, which is rotatably mounted on a side plate; and a swing member, which is arranged on the main shaft, wherein the side plate is provided with a limiting shaft configured to block the rotation of the swing member; the swing member is provided with a rotatable blocking member and an elastic member connected to the blocking member; the swing member can drive the blocking member to rotate around the main shaft as the center, and the elastic member is configured to drive a blocking portion of the blocking member to rotate towards the main shaft, such that the limiting shaft is located outside the path of the blocking portion rotating around the main shaft as the center; and the side plate is provided with an impact member on an inner side of the main shaft, the impact member is provided with two limiting portions which are spaced apart from each other and respectively in limiting fit with the main shaft, and the impact member is configured to push the blocking portion to overcome the acting force of the elastic member to rotate away from the main shaft, such that the limiting shaft is located on the path of the blocking portion rotating around the main shaft as the center. Pushing the blocking member to rotate by means of the impact member can avoid the problem of the poor reliability of the blocking member rotating depending on inertia.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement

Abrégé

Provided in the present application are an arc signal processing circuit and method, and an electrical device. The arc signal processing circuit comprises: an amplification module, wherein an input end of the amplification module is connected to an arc signal, and the amplification module is used for amplifying the arc signal and then outputting an amplified signal; a band-pass filtering amplification module, wherein an input end of the band-pass filtering amplification module is electrically connected to an output end of the amplification module, and the band-pass filtering amplification module is used for filtering and amplifying the amplified signal outputted by the amplification module and then outputting a high-frequency signal of a preset frequency band; and a main control module, wherein the main control module is electrically connected to the output end of the amplification module, and the main control module is electrically connected to an output end of the band-pass filtering amplification module. In the present application, the amplitude of a half-wave signal and an arc energy value of the half-wave signal in a high-frequency signal are compared with corresponding threshold values, and whether an arc signal fails is identified according to a comparison result, such that the accuracy of arc failure determination of an electrical device is improved.

Classes IPC  ?

• G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
• H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion

Abrégé

An operating mechanism of a circuit breaker, comprising: a support (1); a rocker arm assembly, a tripping fastener (7), a locking fastener (10), and a refastening piece (9) that are rotatably provided on the support (1), separately; a first crank (14); an energy storage spring (4); a sliding rail (1-0) fixedly arranged relative to the support (1); a sliding block (18); a first connecting rod (16); a second connecting rod (19); a second crank (22) rotatably arranged about a sixth center (6S); a third connecting rod (23); and a third crank (25) rotatably arranged about a seventh center (7S), wherein the third crank (25) is located on one side of the operating mechanism in the horizontal direction of the operating mechanism. Switching between three working states can be achieved without connection to a contact system; moreover, the layout of the contact system can be changed, so as to provide a larger installation space for an arc-extinguishing chamber.

Classes IPC  ?

• H01H 71/02 - BoîtiersEnveloppesSoclesGarnitures

Abrégé

The present invention relates to the field of low-voltage electrical appliances, and in particular to a circuit breaker operating mechanism. The operating mechanism is provided with two four-connecting-rod structures. One four-connecting-rod structure is composed of a second crank (21), a third connecting rod (23), and a third crank (25), and the third crank (25) has the same center of rotation as and is in driving connection with a phase pole rotary shaft (39); the other four-connecting-rod structure is composed of a second crank (21), a fourth connecting rod (29), and an N-pole rotary shaft (30), allowing the phase pole rotary shaft (39) and the N-pole rotary shaft (30) to rotate around different centers of rotation, thus providing more convenience for the design of the circuit breaker.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement

Abrégé

A remotely-controlled rotary isolator switch, comprising an operating device (1) and a switch body (2). The switch body (2) comprises at least one switch unit, and the switch unit comprises a moving contact assembly (225) and a static contact. The operating device (1) is transmittingly connected to the moving contact assembly (225) of the switch unit, and drives the moving contact assembly (225) to rotate so as to be in contact with or separated from the static contact, thereby achieving connection or disconnection of a circuit. The operating device (1) comprises an operating shaft (1131), a real-time energy storage mechanism, a delayed energy storage mechanism, a locking mechanism, and a trip mechanism. The locking mechanism comprises a locking member (122). The trip mechanism comprises a trip unit (134). The trip unit (134) acts after receiving a trip signal, and drives the locking member (122) to release the locking of the delayed energy storage mechanism, and the delayed energy storage mechanism releases energy so as to drive the operating shaft (1131) to rotate toward an open position, so that the remotely-controlled rotary isolator switch is switched to an open state. The remotely-controlled rotary isolator switch has good reliability.

Classes IPC  ?

• H01H 19/10 - Organes mobilesContacts montés sur ces organes
• H01H 19/14 - Organes moteurs, p. ex. bouton rotatif
• H01H 31/02 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs Détails

Abrégé

The present invention relates to the field of low-voltage electrical apparatuses, and in particular to an automatic opening mechanism, comprising an operating shaft, a delayed energy-storage mechanism, a reset mechanism and a tripping mechanism. The delayed energy-storage mechanism comprises a rotating disk and a first energy-storage spring, the reset mechanism comprises a reset gear, and the tripping mechanism comprises a tripper. The tripper triggers the delayed energy-storage mechanism in an energy-storage state; and the first energy-storage spring releases energy to drive the rotating disk to rotate from an energy-storage position to an energy-release position so that the delayed energy-storage mechanism switches to an energy-release state, and at the same time, the operating shaft is driven to rotate from a closing position to an opening position. The operating shaft rotates from the opening position to the closing position, and the rotating disk is driven to rotate from the energy-release position to the energy-storage position, thereby driving the first energy-storage spring to store energy, so that the delayed energy-storage mechanism switches from the energy-release state to the energy-storage state; and at the same time, the rotating disk meshes with the reset gear to drive same to rotate, and the reset gear drives the tripper to reset. Therefore, the automatic opening mechanism realizes remote opening operations and the automatic resetting of the tripping mechanism.

Classes IPC  ?

• H01H 9/20 - Mécanismes d'interverrouillage, verrouillage ou accrochage
• H01H 3/30 - Dispositions comportant une énergie à l'intérieur de l'interrupteur pour actionner le mécanisme d'entraînement utilisant un moteur à ressort
• H01H 3/34 - Mécanismes-moteurs, c.-à-d. pour transmettre la force motrice aux contacts utilisant un encliquetage
• H01H 19/40 - Commutateurs n'ayant qu'une pression de contact axiale
• H01H 19/64 - Interrupteurs enfermés adaptés pour fonctionner en groupe lorqu'ils sont assemblés avec des interrupteurs identiques, p. ex. interrupteurs empilés
• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement

Abrégé

A secondary connection device, comprising a movable connection assembly and a stationary connection assembly. The movable connection assembly comprises a base and a moving part slidably mounted in an inner cavity of the base; first connection terminals are arranged on the moving part; a locking mechanism is arranged between the base and the moving part; the locking mechanism comprises a first locking assembly, and the first locking assembly is used for locking the moving part in the inner cavity of the base; the first locking assembly comprises a first limiting part, a rotating member and a sliding member. When the movable connection assembly moves from a test position to a connected position, the stationary connection assembly drives the rotating member to perform unlocking rotation, and the sliding member is driven by the rotating member to slide in the direction away from the first limiting part so as to release a limiting fit, thus allowing the moving part to move in the inner cavity of the base. The first locking assembly of the locking mechanism locks the moving part in the inner cavity of the base, and, when unlocked, the moving part can move in the inner cavity of the base, so that the present invention has the advantages of simple structure, high reliability and convenient operation.

Classes IPC  ?

• H01H 71/08 - BornesConnexions
• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
• H01H 71/02 - BoîtiersEnveloppesSoclesGarnitures
• H01H 9/22 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour interverrouillage entre enveloppe, capot ou volet de protection et le mécanisme actionnant les contacts

Abrégé

An arc extinguishing mechanism, comprising an arc extinguishing chamber. The arc extinguishing chamber comprises two partition plates and a plurality of arc extinguishing grid sheets provided between the two partition plates; and arc striking sheets matching a moving contact or a fixed contact are provided at the tops of the arc extinguishing grid sheets. The arc extinguishing mechanism further comprises a first magnetism increasing mechanism; the first magnetism increasing mechanism comprises two first magnetism increasing sheets oppositely arranged on the two sides of the plurality of arc extinguishing grid sheets, and an arc striking structure provided at the bottoms of the arc extinguishing grid sheets; the first magnetism increasing sheets are parallel to the partition plates; the first magnetism increasing sheets, the arc striking structure, and the arc striking sheets form a first magnetic loop; and the first magnetic loop is used for generating a force for pushing an electric arc entering the arc extinguishing chamber towards an exhaust port of the arc extinguishing chamber. The first magnetism increasing sheets, the arc striking sheets, and the arc striking structure at the bottoms of the arc extinguishing grid sheets form the first magnetic loop, so that the moving speed of the electric arc can be increased, and the arc extinguishing speed is further increased.

Classes IPC  ?

• H01H 73/18 - Moyens pour éteindre ou supprimer un arc

Abrégé

The present application discloses a signal injection circuit and injection method. The signal injection circuit comprises a constant current generation module and a feedback module. The constant current generation module is used to switch a working state according to a frequency driving signal, and when the constant current generation module is in an on state, output a constant current feature signal to the feedback module. The frequency driving signal is a signal used for physical topology identification of a low-voltage power transformer region. The feedback module is used to adjust a feedback signal according to the constant current feature signal. The feedback signal is used to reflect an occurrence status of the constant current feature signal. According to the present application, the constant current feature signal has no influence on the power supply quality of a power grid, which improves the reliability of power system operations, the success rate of physical topology identification of the low-voltage power transformer region can be increased by means of the feedback signal, and the rate of physical topology identification is further increased, thereby ensuring the reliability of physical topology identification.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif

Abrégé

An operating mechanism of a circuit breaker that includes a bracket, a rocker arm assembly, a jump buckle, a latch, a re-buckle, a first crank, a first spring and a first connecting rod, the jump buckle is in latching fit with the latch, and the re-buckle is in limiting fit with the latch; one end of the first crank is pivotally disposed on the jump buckle around a first axis, and the other end of the first crank is rotatably connected to one end of the first connecting rod around a second axis; the rocker arm assembly is driving fit with the first crank through the first spring; and slide rails disposed on the bracket and a slider slidably disposed on the slide rails, rotatably connected to the other end of the first connecting rod, and in driving fit with a moving contact mechanism of the circuit breaker.

Classes IPC  ?

• H01H 71/52 - Mécanismes à réarmement manuel actionnés par un levier

Abrégé

The present invention relates to the field of low-voltage electric appliances, in particular to an operation mechanism and a switch device comprising same. When opening the operation mechanism, an operation shaft drives an energy storage rotary disc and a transmission plate at the same time; the transmission plate moves from a transmission plate closed position to a transmission plate breaking position; the energy storage rotary disc drives an output shaft structure to rotate from an output shaft closed position to an output shaft breaking position; after a first spring starts to release energy, the energy storage rotary disc drives the output shaft structure to rotate to a breaking transition position and is disengaged from the output shaft structure after driving same to cross the breaking transition position, and meanwhile, the output shaft structure and the transmission plate cooperate to enable a second spring group to start energy release after energy storage is completed; and the second spring group releases energy to drive the output shaft structure to rotate to said output shaft breaking position. The operation mechanism and the switch device of the present invention can remarkably increase the clearance between a moving contact and a fixed contact when they are open.

Classes IPC  ?

• H01H 3/32 - Mécanismes-moteurs, c.-à-d. pour transmettre la force motrice aux contacts
• H01H 3/02 - Organes moteurs, c.-à-d. pour actionner le mécanisme d'entraînement par une force mécanique extérieure à l'interrupteur

Abrégé

An electromagnetic system and a contactor. The electromagnetic system comprises a base, and at least two electromagnetic units arranged in the base, wherein the base comprises a wall, by means of which a mounting space is enclosed for mounting the electromagnetic units. Each electromagnetic unit comprises a coil support for winding a coil thereon, wherein the side of the coil support corresponding to the wall is provided with wiring sheets at a wire input end and a wire output end respectively, and each wiring sheet comprises a connecting portion; and holes are formed in the positions of the wall corresponding to the connecting portions of the electromagnetic unit. The two electromagnetic units penetrate the mounting space via the holes by means of connecting wires arranged on the exterior of the wall, and are connected to the connecting portions to form a connection. The present invention can improve the reliability of products.

Classes IPC  ?

• H01H 50/14 - Dispositions des bornes

Abrégé

An operating mechanism and an isolating switch. The isolating switch comprises the operating mechanism. The operating mechanism comprises a primary energy storage mechanism and an output shaft, and further comprises a secondary energy storage mechanism, wherein the secondary energy storage mechanism comprises a second driving structure and a second energy storage elastic member which are coaxially assembled on the output shaft; the second driving structure comprises a fixing member and a locking assembly; the fixing member is provided with two limiting grooves; and during switching off, the primary energy storage mechanism releases energy to drive the output shaft to rotate, so as to store energy for the second energy storage elastic member, after the output shaft drives a locked portion of the locking assembly to slide out of one limiting groove to be unlocked, the second energy storage elastic member releases energy to drive the locking assembly to drive the output shaft to continue rotating to a switching-on position, and the locked portion is driven to slide into the other limiting groove to be limited and locked. The primary energy storage mechanism and the secondary energy storage mechanism separately drive the output shaft to rotate, so that a contact mechanism can be driven to have a larger opening distance during switching on, thereby being beneficial for ensuring the electrical performance of a product.

Classes IPC  ?

• H01H 31/00 - Interrupteurs à coupure dans l'air pour haute tension sans moyen d'extinction ou de prévention des arcs
• H01H 31/04 - Mécanismes d'interverrouillage
• H01H 31/06 - Mécanismes d'interverrouillage pour interverrouillage entre l'enveloppe, le couvercle ou le volet de protection et le mécanisme actionnant les contacts

Abrégé

A moving contact mechanism with a contact support that rotates around a third axis, a moving contact pivotable around a contact axis, and both ends of the contact spring are a third end of the spring and a fourth end of the spring, respectively, which are rotatably connected to the moving contact and the contact support respectively. A geometric axis of the contact spring is a second axis line located on one side of the third axis when the moving contact is normally on or off. The contact spring keeps the moving contact in an on or off state. The moving contact rotates relative to the contact support when repelled, drives the contact spring to rotate around the fourth end of the spring, so that the second axis line swings to the other side of the third axis, and remains in a temporary breaking position.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
• H01H 1/00 - Contacts
• H01H 3/38 - Mécanismes-moteurs, c.-à-d. pour transmettre la force motrice aux contacts utilisant un ressort ou autre couplage élastique de l'arbre

Abrégé

A quick tripping device with a moving contact mechanism that includes a contact support and a moving contact. An operating mechanism is in driving connection with the moving contact mechanism, so that the moving contact and a static contact are switched on or off. A first push rod is pivotally disposed on the contact support with one end in driving fit with the moving contact, a driving gap is formed between the one end and the moving contact, and a first push rod driving end of the first push rod is in driving fit with the operating mechanism to trip the operating mechanism. When the moving contact is repelled, the moving contact rotates relative to the contact support through the driving gap, and then contacts with the first push rod driven end and drives the first push rod to rotate, so that the operating mechanism is tripped.

Classes IPC  ?

• H01H 71/12 - Mécanismes de déclenchement automatique avec ou sans déclenchement manuel
• H01H 71/08 - BornesConnexions
• H01H 1/24 - Contacts caractérisés par la manière dont les contacts coopérants s'engagent en butant l'un contre l'autre avec montage élastique

Abrégé

An operating mechanism of a circuit breaker, relating to the field of low-voltage electric appliances. The operating mechanism is provided with a double-slider mechanism, a first slider mechanism comprising a first crank, a first connecting rod, a sliding rail and a slider, and a second slider mechanism comprising a contact support, a second connecting rod, a sliding rail and a slider. The double-slider mechanism reduces the space requirement of the operating mechanism while increasing the opening distance of a moving contact, and the breaking performance is good. A circuit breaker comprising the operating mechanism, which provides good breaking performance.

Classes IPC  ?

• H01H 71/52 - Mécanismes à réarmement manuel actionnés par un levier

Abrégé

An operating mechanism of a circuit breaker, wherein two ends of a first spring are rotationally connected to a rocker arm assembly and a first crank through a first spring shaft and a second spring shaft respectively, and one end of a jump buckle is rotationally connected to a bracket and is a jump buckle pivoting end; a jump buckle hole of the jump buckle is aligned with a bracket hole of the bracket; the first spring shaft is in limiting fit with the jump buckle; and one end of the first crank swings in a direction away from the jump buckle pivoting end, such that a spacing between the first spring shaft and the second spring shaft is smaller than or equal to the length of the first spring, and a first assembly state is formed.

Classes IPC  ?

• H01H 69/00 - Appareillage ou procédés pour la fabrication de dispositifs de protection
• H01H 71/54 - Mécanismes à réarmement manuel actionnés par un basculeur
• H01H 71/50 - Mécanismes à réarmement manuel

Abrégé

The present patent relates to the field of low-voltage electric appliances, and in particular to a thermal disconnection and indication mechanism which is applied to a surge protector. The thermal disconnection and indication mechanism comprises a supporting frame; an indicating member and a push rod, which are respectively slidably arranged on the supporting frame; a conductive piece, which is fixedly arranged on the push rod and acts synchronously with the push rod; a push rod driving member; and an indicating member driving member. The conductive piece is fixed to a second electrode of a protective element of the surge protector by means of welding. The indicating member comprises an indicating portion and an indicating member fitting portion, which are connected in a bent manner. When the indicating member is located at a first position, the indicating member fitting portion is fitted with the push rod in a limiting manner. After the conductive piece and the second electrode are unfixed from each other, the push rod driving member drives the push rod to slide, so as to stop the limiting fitting thereof with the indicating member fitting portion. The indicating member driving member drives the indicating member to slide to a second position. The thermal disconnection and indication mechanism has a simple structure and a compact layout, and is reliable in terms of actions. The present patent further relates to the surge protector comprising the thermal disconnection and indication mechanism. The surge protector is small in terms of size.

Classes IPC  ?

• H01H 71/04 - Moyens pour indiquer l'état du dispositif de commutation
• H01H 71/14 - Mécanismes électrothermiques
• H02H 9/04 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de tension

Abrégé

The present invention relates to the low-voltage electrical field, and specifically relates to a residual current operated circuit-breaker with a width of 18 mm. On a projection perpendicular to a widthwise direction of a circuit-breaker housing, the circuit-breaker housing comprises first to fifth regions. The residual current operated circuit-breaker further comprises an operation mechanism and a leakage testing mechanism, which are arranged in the first region; a short-circuit instantaneous tripping mechanism, an L-pole contact system, and an N-pole contact system, which are arranged in the second region; an arc extinguishing system, which is arranged in the third region; an overload tripping mechanism, which comprises a bimetallic strip and is arranged in the fourth region; and a zero-sequence current transformer and a flux trip device, which are arranged in the fifth region. The L-pole contact system and the N-pole contact system are arranged side by side in the widthwise direction of the circuit-breaker housing. The zero-sequence current transformer and the flux trip device are arranged side by side in a lengthwise direction of the circuit-breaker housing and are respectively arranged opposite the second region and the third region. The residual current operated circuit-breaker has a rational internal layout and a compact structure.

Classes IPC  ?

• H01H 71/02 - BoîtiersEnveloppesSoclesGarnitures
• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement

Abrégé

An operating mechanism and a switching device. The switching device comprises the operating mechanism. The operating mechanism comprises an operating member (2), a first connecting rod (3), a first engaging member (4), a second engaging member (5), a second connecting rod (7), and a lever (6). The first engaging member (4) and the second engaging member (5) are pivotally mounted and engaged with each other, respectively; the first engaging member is provided with a sliding groove (42); the operating member and the lever are pivotally mounted, respectively; one end of the first connecting rod is hingedly connected to one end of the second connecting rod, the other end of the first connecting rod is connected to the operating member, and the other end of the second connecting rod is connected to the lever; hinge ends of the first connecting rod and the second connecting rod are in sliding fit with the sliding groove of the first engaging member. Provided are an operating mechanism and a switching device having high reliability. An engaging mechanism composed of the first engaging member and the second engaging member and a transmission mechanism are mechanisms which are independent of each other, so that when the operating mechanism is normally turned on or off, the engaging mechanism is basically in a static state and greatly improves the operation reliability of the whole mechanism.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement

Abrégé

A circuit breaker, comprising a housing, a handle, a first connecting rod, a jump fastener, a latch fastener, a second connecting rod, a lever, a movable contact and a stationary contact. The jump fastener and the latch fastener are respectively pivotally mounted on the housing; the jump fastener is provided with a sliding groove, and a jump fastener buckle-fitting portion for being buckle-fitted with a buckle platform of the latch fastener; the handle is pivotally mounted on the housing, one end of the first connecting rod is connected to the handle, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is connected to the lever, and the end where the first connecting rod and the second connecting rod are hinged to each other are in sliding fit with the sliding groove of the jump fastener; and the lever is pivotally mounted on the housing, one end of the movable contact is mounted on the lever, and the other end of the movable contact is arranged corresponding to the stationary contact. By means of the present invention, a circuit breaker having a compact and small structure and having a high operational reliability is provided.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
• H01H 71/02 - BoîtiersEnveloppesSoclesGarnitures

Abrégé

The present invention relates to the field of low-voltage electricity, and in particular to an operating mechanism of a switching device. The switching device comprises a transmission shaft, a cam and an operating shaft, which are each rotationally arranged, wherein the operating shaft is in driving fit with the cam to drive the cam to rotate; the cam rotates to make an energy storage spring store energy; when the cam rotates to a dead-point position, the energy storage spring stores energy to a maximum value, and after the cam rotates past the dead-point position, the energy storage spring releases the energy to drive the cam to rotate; the transmission shaft is in driving fit with the cam and is used for outputting a driving force to a movable-contact structure of the switching device; a rotation allowance is provided between the cam and the transmission shaft, such that the transmission shaft remains stationary during the rotation of the cam to the dead-point position; and after rotating to the dead-point position, the cam continues to rotate by a first angle φ1 and then comes into contact with the transmission shaft to drive the transmission shaft to rotate, the first angle φ1 being larger than 0 degrees. The operating mechanism has a simple structure and has a fast opening and closing operation speed. The present invention further relates to a switching device comprising the operating mechanism, and the switching device has a fast opening and closing speed and a good current-carrying capacity.

Classes IPC  ?

• H01H 3/42 - Mécanismes-moteurs, c.-à-d. pour transmettre la force motrice aux contacts utilisant des cames ou excentriques

Abrégé

The present invention relates to the low-voltage electrical field, and specifically relates to a circuit breaker, comprising a plurality of circuit breaking poles, an operating mechanism, and a tripping system, wherein each circuit breaking pole comprises a pole housing and a contact system; the contact system comprises a moving contact mechanism and a static contact; the operating mechanism is provided outside each circuit breaking pole and is separately in driving connection with each moving contact mechanism; the tripping system comprises a plurality of groups of tripping mechanisms and an adjustment mechanism; each group of tripping mechanisms comprise a conductive plate, a magnetic yoke, and an armature; the conductive plate passes through the middle portion of the magnetic yoke; a group of tripping mechanisms are arranged in each circuit breaking pole; the contact system of each circuit breaking pole is electrically connected to a corresponding conductive plate; the adjustment mechanism comprises a linkage rod; each group of tripping mechanisms further comprise an insulating transmission rod that is rotatably arranged; and one end of the insulating transmission rod is inserted into the pole housing and is in driving fit with the armature, and the other end of the insulating transmission rod protrudes out of the pole housing and is in driving fit with the operating mechanism by means of the linkage rod so as to drive the operating mechanism to trip. The circuit breaker is good in insulativity and high in safety.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
• H01H 71/02 - BoîtiersEnveloppesSoclesGarnitures
• H01H 71/74 - Moyens pour régler les conditions dans lesquelles le dispositif doit fonctionner pour assurer la protection

Abrégé

The present invention relates to the field of low-voltage appliances, and in particular relates to an operating mechanism. A second operating shaft assembly of the operating mechanism is in driving cooperation with a second transmission structure. The second operating shaft assembly rotates about its own axis so as to drive the second transmission structure to move back and forth. One end of a second energy storage spring structure is drivingly connected to an energy storage shaft and the other end is rotatably arranged. The second transmission structure is in driving cooperation with the energy storage shaft so as to drive the rotation thereof, so that the second energy storage spring structure stores energy. Once the second energy storage spring structure turns over a second dead point position, the energy is released so as to drive the energy storage shaft to rotate. The energy storage shaft comprises an energy storage shaft gear, a power output structure comprises a power output gear shaft, and the energy storage shaft gear meshes with a power output structure gear so as to drive the power output gear shaft to rotate. The operating mechanism may flexibly adjust the breaking speed and opening distance of a conductive apparatus connected thereto. The present invention also relates to a switching device comprising the operating mechanism, which may adjust the breaking speed and opening distance of the conductive apparatus as required without changing the volume.

Classes IPC  ?

• H01H 33/42 - Mécanismes moteurs

Abrégé

The present invention relates to the low-voltage electrical field, and in particular, to an operating mechanism of a circuit breaker. A second connecting rod assembly of the operating mechanism comprises a second crank pivoted around a tenth axis, a third connecting rod, and a third crank pivoted around an eleventh axis; the second crank is further rotatably connected to the third connecting rod by means of an eighth shaft; the third connecting rod is further rotatably connected to the third crank by means of a ninth shaft; a first connecting rod assembly is further connected to the second crank by means of a seventh shaft; the shafts and the axes are arranged in parallel at intervals; the tenth axis or the eleventh axis coincides with a rotating axis of a moving contact mechanism, and the eighth shaft or the ninth shaft is in driving connection with the moving contact mechanism so as to drive the moving contact mechanism to rotate. The operating mechanism provides a plurality of modes of connection with the moving contact mechanism, thereby facilitating the design of a contact system of the circuit breaker. The present invention further relates to a circuit breaker comprising the operating mechanism, which can flexibly adjust a positional relationship between the operating mechanism and the moving contact mechanism according to requirements.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
• H01H 73/04 - Contacts

Abrégé

A low-voltage switching device, comprising an operation mechanism, a differential system, and a compensation mechanism. The compensation mechanism comprises a support base, and a lever and a cam rotatably assembled on the support base; a slide block respectively connected to the lever and the cam is assembled on the support base; a compensation piece respectively mating with the lever and the differential system is provided on the slide block; the differential system enables, by pushing the compensation piece to rotate, the lever to rotate so as to trigger the operation mechanism to trip; an adjustment screw is provided between the cam and the slide block; the slide block is enabled, by rotating the cam or the adjustment screw, to drive the compensation piece to move so as to adjust the distance between the compensation piece and the lever. According to the low-voltage switching device of the present invention, the slide block, the cam and the lever of the compensation mechanism thereof mate with each other; the slide block is adjusted by means of the adjustment screw or the cam so as to indirectly adjust the distance between the compensation piece and the lever, such that the structure of the entire compensation mechanism is more compact; compensation adjustment can be completed merely in a small space.

Classes IPC  ?

• H01H 71/74 - Moyens pour régler les conditions dans lesquelles le dispositif doit fonctionner pour assurer la protection
• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement

Abrégé

The present invention relates to the field of low-voltage electrical appliances, and in particular, to a quick tripping apparatus for a circuit breaker. A contact system thereof comprises a moving contact mechanism and a static contact. The moving contact mechanism comprises a contact support and a moving contact. The moving contact mechanism further comprises a contact spring, and two ends of the contact spring are respectively connected to the moving contact and the contact support. The quick tripping apparatus further comprises a first transmission structure. The first transmission structure is in driving fit with the contact spring, and the first transmission structure rotates along with the contact spring. When a short-circuit current flows through the contact system, an electric repulsive force between the moving contact and the static contact repels the moving contact, such that the moving contact rotates relative to the contact support. The moving contact, by means of the contact spring, drives the first transmission structure to rotate, and the first transmission structure drives an operating mechanism to trip. The present quick tripping apparatus is simple in structure and convenient to assemble, and can achieve quick tripping of the circuit breaker. The present invention also relates to a circuit breaker comprising the quick tripping apparatus, which can avoid the circuit breaker from closing for a second time.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement

Abrégé

The present utility model relates to the field of low-voltage electric appliances, and in particular to a moving contact mechanism, wherein a contact support is rotatably arranged around a third center, a moving contact is pivotally arranged around a contact center, two ends of a contact spring are respectively a spring third end and a spring fourth end which are rotatably connected to the moving contact and the contact support, respectively, and a geometric axis of the contact spring is a second axis; when the moving contact is normally closed or normally opened, the second axis is located on one side of the third center, and the moving contact is maintained at a normal closed position or a normal opened position by means of the contact spring; and when the moving contact is repulsed by an electric repulsion force generated by a short-circuit current, the moving contact rotates relative to the contact support, and the moving contact drives the contact spring to rotate around the spring fourth end, such that the second axis swings to the other side of the third center, and the moving contact is maintained at a temporary breaking position. The moving contact mechanism in the present utility model has a simple structure, and the moving contact can be locked by means of the contact spring.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement

Abrégé

The solution relates to the field of low-voltage electric appliances, and in particular to an operating mechanism (100) of a circuit breaker. In the operating mechanism, two ends of a first spring (22) are rotatably connected to a rocker arm assembly and a first crank (30) by means of a first spring shaft (46) and a second spring shaft (16), respectively; one end of a jump pin (60) is rotatably connected to a support (50) and is a jump pin pivot end; and a jump pin hole (605) of the jump pin (60) is aligned with a support hole (508) of the support (50), the first spring shaft (46) is fitted to the jump pin (60) in a limiting manner, and one end of the first crank (30) swings in a direction away from the jump pin pivot end, such that the distance between the first spring shaft (46) and the second spring shaft (16) is less than or equal to the length of the first spring (22), forming a first assembly state. The operating mechanism (100) facilitates the assembly of the first spring (22). Further disclosed is an assembly method for the operating mechanism, which is simple to operate and has high efficiency.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement

Abrégé

The present invention relates to the field of low-voltage electrical appliances, and in particular to a quick tripping device. A moving contact mechanism thereof comprises a contact support and a moving contact; an operating mechanism is connected to the moving contact mechanism in a driving manner, such that the moving contact and a static contact are closed or disconnected thereby; the quick tripping device further comprises a first push rod pivotally arranged on the contact support, a first push rod receiving end of the first push rod is in driving fit with the moving contact, and a driving clearance is provided therebetween; and a first push rod driving end of the first push rod is in driving fit with the operating mechanism to release the first push rod. When the moving contact is electrically disconnected by a short-circuit current, the moving contact rotates relative to the contact support, and after the moving contact rotates through the driving clearance, the moving contact comes into contact with the first push rod receiving end and drives the first push rod to rotate, so that the operating mechanism performs tripping. In the quick tripping device of the present invention, the driving clearance thereof prevents a quick tripping device misoperation. The present invention further relates to a circuit breaker comprising the quick tripping device, wherein the quick tripping device thereof prevents misoperation of the circuit breaker.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement

Abrégé

An operating mechanism of a circuit breaker, relating to the field of low-voltage electric appliances. The operating mechanism is provided with a double-slider mechanism, a first slider mechanism comprising a first crank, a first connecting rod, a sliding rail and a slider, and a second slider mechanism comprising a contact support, a second connecting rod, a sliding rail and a slider. The double-slider mechanism reduces the space requirement of the operating mechanism while increasing the opening distance of a moving contact, and the breaking performance is good. A circuit breaker comprising the operating mechanism, which provides good breaking performance.

Classes IPC  ?

• H01H 71/24 - Mécanismes électromagnétiques
• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement

Abrégé

The present invention relates to the field of low-voltage electrical appliances, and in particular relates to an operating mechanism of a circuit breaker, the mechanism comprising a support, a rocker arm assembly, a jumper pin, a lock catch, a re-fastening member, a first crank, a first spring, and a first connecting rod. The jumper pin is in lock fit with the lock catch and the re-fastening member is in limiting fit with the lock catch. One end of the first crank is disposed on the jumper pin so as to pivot about a first axis center and the other end thereof is connected to one end of the first connecting rod so as to rotate about a second axis center. The rocker arm assembly is in drive connection with the first crank by means of the first spring. The operating mechanism further comprises a slide rail disposed on the support and a slider slidably disposed on the slide rail, the slider being rotatably connected to the other end of the first connecting rod and being in drive fit with a moving contact mechanism of a circuit breaker. The operating mechanism of a circuit breaker of the present invention can independently implement opening, closing and tripping operations.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
• H01H 71/52 - Mécanismes à réarmement manuel actionnés par un levier