Safety circuit breaker

Abstract

The invention provides a safety circuit breaker, and relates to the technical field of circuit breakers. The safety type circuit breaker comprises a circuit breaker, the circuit breaker comprises a control mechanism, the control mechanism comprises a driving module, a switching-on and switching-off module, a jumping module, a power-in wiring terminal, a power-out wiring terminal and a position sensor, the driving module can drive the switching-on and switching-off module to be switched between a switching-off position and a switching-on position, and when the switching-on and switching-off module is in the switching-off position, the jumping module is driven to jump when the switching-on and switching-off module is in the switching-off position When the switch-on and switch-off module is at the switch-on position, the power-in wiring terminal is connected with the power-out wiring terminal, and when the current in the circuit breaker is abnormal, the jumping module triggers the position sensor, the position sensor sends a signal to the driving module, and the driving module drives the switch-on and switch-off module to drive the switch-on and switch-off module to drive the switch-on and switch-off module to switch off. Therefore, the driving module drives the opening and closing module to be switched from the closing position to the opening position. According to the invention, whether opening and closing are automatically opened or manually opened can be accurately judged, so that potential safety hazards can be found and processed in time.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a safety circuit breaker. Background Art

[0002] A circuit breaker is a switching device that can close, carry and disconnect current under normal circuit conditions and can close, carry and disconnect current under abnormal circuit conditions within a specified time. Circuit breakers can be used to distribute electrical energy, start asynchronous motors infrequently, and protect power lines and motors. When they are seriously overloaded or have faults such as short circuits and undervoltage, they can automatically cut off the circuit. Its function is equivalent to the combination of a fuse-type switch and an over- and under-temperature relay, and generally no parts need to be changed after disconnecting the fault current. At present, it has been widely used.

[0003] The existing circuit breaker cannot accurately judge whether it is automatically disconnected or manually disconnected when in use, and cannot meet our use needs. In view of the above situation, it is necessary to improve the existing circuit breaker so that it can adapt to the current use needs of the circuit breaker. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a safety circuit breaker.

[0005] The present invention provides a safety circuit breaker, comprising a circuit breaker, wherein the circuit breaker comprises a control mechanism, wherein the control mechanism comprises a driving module, an opening and closing module, a jumping module, an input power terminal, an output power terminal and a position sensor, wherein the driving module is drivingly connected to the opening and closing module to drive the opening and closing module to switch between an opening position and a closing position, wherein when the opening and closing module is in the opening position, the input power terminal is disconnected from the output power terminal, and when the opening and closing module is in the closing position, the input power terminal is connected to the output power terminal, and when the current in the circuit breaker is abnormal, the jumping module triggers the position sensor, and the position sensor sends a signal to the driving module, so that the driving module drives the opening and closing module to switch from the closing position to the opening position.

[0006] Optionally, the opening and closing module includes a lock, a special-shaped gear, a control handle, a handle connecting rod, a U-shaped connecting rod, a rotating plate, a first linkage plate and a second linkage plate. The control handle is connected to one end of the handle connecting rod, the special-shaped gear is mounted on the handle connecting rod, one end of the U-shaped connecting rod is connected to the handle connecting rod, and the other end of the U-shaped connecting rod is connected to the rotating plate. The rotating plate is rotatably connected to the housing of the circuit breaker, the first linkage plate is connected to the rotating plate, and the second linkage plate is connected to the first linkage plate. The driving module is used to drive the special-shaped gear to rotate, and the lock is rotatably connected to the housing. When the opening and closing module is in the opening position, the lock is used to lock the jumping module, and when the opening and closing module is in the closing position, the lock is used to unlock the jumping module.

[0007] Optionally, the opening and closing module also includes a first return spring, a third return spring, a fifth return spring, a first limit block and a protrusion, the first limit block and the protrusion are arranged on the special-shaped gear, the first return spring is connected to the rotating plate, the third return spring is connected to the second linkage plate, the fifth return spring is connected to the special-shaped gear, one end of the fifth return spring is clamped between the first limit block and the protrusion, and the other end of the fifth return spring passes through the protrusion and is connected to it.

[0008] Optionally, the jumping module includes a trigger unit, a jumping block and a jumping buckle, the trigger unit is drivingly connected to the jumping block, the jumping buckle is arranged on the rotating plate, when the trigger unit is not working, the jumping buckle and the rotating plate are in an unlocked state so that the rotating plate can rotate relative to the jumping buckle, when the trigger unit is working, the jumping buckle and the rotating plate are in a locked state so that the rotating plate can rotate synchronously with the jumping buckle.

[0009] Optionally, the jumping module further includes a second return spring and a fourth return spring, the second return spring is connected between the jump buckle and the rotating plate, and the fourth return spring is connected to the jump buckle.

[0010] Optionally, the drive module includes a motor, a worm, a turbine and a gear set, the motor is connected to the housing of the circuit breaker, the output shaft of the motor is connected to one end of the worm, the worm is meshingly connected to the turbine, the turbine is meshingly connected to the gear set, the gear set is meshingly connected to the special-shaped gear, and the turbine and the gear set are both rotatably connected to the housing of the circuit breaker.

[0011] Optionally, the driving module also includes a power supply port, a PCB board, a transformer and a micro control unit, the power supply port and the PCB board are both connected to the housing of the circuit breaker, the power supply port is electrically connected to the PCB board, the transformer is electrically connected to the PCB board, the transformer is electrically connected to the micro control unit, and the motor is electrically connected to the micro control unit.

[0012] Optionally, one end of the circuit breaker is used to be electrically connected to a current metering module through a power-taking copper sheet, and the other end of the circuit breaker is used to be electrically connected to a leakage detection module through a power-taking copper sheet. A display screen is also provided on the circuit breaker, and the display screen, current metering module and leakage detection module are all electrically connected to the micro control unit.

[0013] Optionally, the safety circuit breaker further includes a protection module, which includes a sulfur hexafluoride gas cylinder. When an abnormal current occurs in the circuit breaker, the sulfur hexafluoride gas cylinder is used to release sulfur hexafluoride gas.

[0014] Optionally, the protection module also includes a first connecting rod and a second connecting rod, one end of the first connecting rod is arranged in the sulfur hexafluoride gas cylinder, the other end of the first connecting rod passes through the sulfur hexafluoride gas cylinder and is rotatably connected to one end of the second connecting rod, the other end of the second connecting rod is rotatably connected to the jump buckle, and a ventilation groove is provided on the outer peripheral surface of the first connecting rod. When the jump buckle is not rotated, the ventilation groove is located in the sulfur hexafluoride gas cylinder. When the jump buckle rotates, the second connecting rod pulls the first connecting rod upward so that the top end of the ventilation groove extends out of the sulfur hexafluoride gas cylinder.

[0015] The beneficial effects of the safety circuit breaker of the present invention are as follows: the driving module can drive the opening and closing module to switch between the opening position and the closing position. When the driving module drives the opening and closing module to be in the opening position, the power input terminal and the power output terminal are disconnected, so that the current in the circuit breaker is cut off. When the driving module drives the opening and closing module to be in the closing position, the power input terminal and the power output terminal are connected, so that the current in the circuit breaker is connected, so that the driving module is artificially controlled to perform opening and closing operations, and then artificial opening and disconnection is realized. When the current in the circuit breaker has problems such as overload, short circuit, undervoltage, etc., the jumping module can trigger the position sensor, and the position sensor sends a signal to the driving module, so that the driving module drives the opening and closing module to switch from the closing position to the opening position, and then automatic opening and disconnection is realized. Therefore, it is possible to accurately determine whether the opening and closing is automatically disconnected or manually disconnected, so that potential safety hazards can be discovered and handled in time, and the reliability and service life of the equipment are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the installation structure of the control mechanism and the display of the present invention; Figure 3 It is a schematic diagram of the installation and decomposition structure of the current metering module, the leakage detection module and the control mechanism of the present invention; Figure 4 It is a schematic diagram of the explosion structure of the opening and closing of the control mechanism of the present invention; Figure 5 It is a schematic diagram of the normal opening structure of the control handle of the present invention; Figure 6 It is a schematic diagram of the normal closing structure of the control handle of the present invention; Figure 7 It is a schematic diagram of the working state structure of the trip button when a fault occurs in the present invention; Figure 8 It is a schematic diagram of the control mechanism working and the separation structure of the first linkage plate and the second linkage plate when a fault occurs in the present invention; Fig. 9 It is a three-dimensional structural schematic diagram of the control mechanism of the present invention when a fault occurs; Fig.10 This is a schematic diagram of the structure of the opening and closing drive module of the present invention from a first angle; Fig.11 It is a second angle structural schematic diagram of the opening and closing drive module of the present invention; Fig.12 yes Figure 7 A magnified view of the structure in Figure 2.

[0017] Description of the accompanying drawings: 1. Current metering module; 2. Circuit breaker; 3. Control mechanism; 31. Drive module; 311. Power supply port; 312. PCB board; 313. Transformer; 314. Micro control unit; 315. Motor; 316. Worm; 317. Turbine; 318. Gear set; 319. Special-shaped gear; 32. Control handle; 33. Handle connecting rod; 34. U-shaped connecting rod; 35. Rotating plate; 36. Housing; 37. First linkage plate; 38. First Two linkage plates; 39, jump buckle; 30, lock buckle; 4, leakage detection module; 5, display screen; 6, power supply copper sheet; 7, first reset spring; 8, second reset spring; 9, third reset spring; 10, fourth reset spring; 11, fifth reset spring; 12, first limit block; 13, bump; 14, position sensor; 15, jumping module; 16, jumping block; 17, sulfur hexafluoride gas cylinder; 18, first connecting rod; 181, ventilation groove; 19, second connecting rod. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment", "some embodiments", "exemplarily" and "one embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiment are included in at least one embodiment or embodiment of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or embodiments in a suitable manner.

[0021] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0022] An embodiment of the present invention provides a safety circuit breaker, including a circuit breaker 2, wherein the circuit breaker 2 includes a control mechanism 3, and the control mechanism 3 includes a driving module 31, a separation and closing module, a jumping module 15, an input power terminal, an output power terminal and a position sensor 14. The driving module 31 is driven and connected to the separation and closing module to drive the separation and closing module to switch between an opening position and a closing position. When the separation and closing module is in the separation position, the input power terminal is disconnected from the output power terminal. When the separation and closing module is in the closing position, the input power terminal is connected to the output power terminal. When the current in the circuit breaker 2 is abnormal, the jumping module 15 triggers the position sensor 14, and the position sensor 14 sends a signal to the driving module 31, so that the driving module 31 drives the separation and closing module to switch from the closing position to the opening position.

[0023] In this optional embodiment, combined with Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the driving module 31 is the core of the control mechanism 3. The driving module 31 is responsible for receiving signals from other modules and driving the movement of the opening and closing module according to these signals. It can be composed of a driving motor, a transmission mechanism and a control system. The opening and closing module is a component in the circuit breaker 2 that directly controls the on and off of the current. When the opening and closing module is in the closing position, the input power terminal and the output power terminal are connected by a conductive component, and the current can flow; when the opening and closing module is in the opening position, the conductive component is disconnected and the current is cut off. The jumping module 15 is a fault detection device, which is designed to be sensitive to current abnormalities (such as overload, short circuit, undervoltage, etc.), such as a thermistor or an electromagnetic coil. When the current is abnormal, the thermistor will heat up and deform or the electromagnetic coil will produce a magnetic field change, thereby triggering the position sensor 14. When the current abnormality is detected, the jumping module 15 will trigger an action, such as activating the position sensor 14 by mechanical or electromagnetic means. The position sensor 14 can be a Hall sensor or a photoelectric sensor, which is used to detect the position of the jumping module 15. The Hall sensor can determine the position by detecting the change of magnetic field, while the photoelectric sensor can determine the position by detecting whether the light is blocked. The position sensor 14 is used to detect the position state (closed or open) of the beating module 15. In the case of current fault, the beating module 15 triggers the position sensor 14, and the position sensor 14 transmits the signal to the driving module 31. The input terminal and the output terminal can be copper or aluminum conductive sheets, which are connected to the external circuit by bolts or crimping. The two are respectively connected to the input and output parts of the circuit, which are the only way for the current to pass through the circuit breaker 2. When the current in the circuit breaker 2 is abnormal, the beating module 15 detects the abnormality and triggers the position sensor 14. The position sensor 14 then sends a signal to the driving module 31, instructing it to drive the opening and closing module to switch from the closed position to the open position, thereby cutting off the current in the circuit and preventing the fault from further expanding.

[0024] In this optional embodiment, the driving module 31 can drive the opening and closing module to switch between the opening position and the closing position. When the driving module 31 drives the opening and closing module to be in the opening position, the input power terminal and the output power terminal are disconnected so that the current in the circuit breaker 2 is cut off. When the driving module 31 drives the opening and closing module to be in the closing position, the input power terminal and the output power terminal are connected so that the current in the circuit breaker 2 is connected, thereby manually controlling the driving module 31 to perform opening and closing operations, thereby realizing manual opening and disconnection. When the current in the circuit breaker 2 has problems such as overload, short circuit, undervoltage, etc., the jumping module 15 can trigger the position sensor 14, and the position sensor 14 sends a signal to the driving module 31, so that the driving module 31 drives the opening and closing module to switch from the closing position to the opening position, thereby realizing automatic opening and disconnection. Therefore, it is possible to accurately determine whether the opening and closing is automatically disconnected or manually disconnected, so that potential safety hazards can be discovered and dealt with in a timely manner, thereby improving the reliability and service life of the equipment.

[0025] Optionally, the opening and closing module includes a lock 30, a special-shaped gear 319, a control handle 32, a handle connecting rod 33, a U-shaped connecting rod 34, a rotating plate 35, a first linkage plate 37 and a second linkage plate 38. The control handle 32 is connected to one end of the handle connecting rod 33, the special-shaped gear 319 is mounted on the handle connecting rod 33, one end of the U-shaped connecting rod 34 is connected to the handle connecting rod 33, and the other end of the U-shaped connecting rod 34 is connected to the rotating plate 35. The rotating plate 35 is rotatably connected to the housing 36 of the circuit breaker 2, the first linkage plate 37 is connected to the rotating plate 35, and the second linkage plate 38 is connected to the first linkage plate 37. The driving module 31 is used to drive the special-shaped gear 319 to rotate, and the lock 30 is rotatably connected to the housing 36. When the opening and closing module is in the opening position, the lock 30 is used to lock the jumping module 15, and when the opening and closing module is in the closing position, the lock 30 is used to unlock the jumping module 15.

[0026] Furthermore, the opening and closing module also includes a first return spring 7, a third return spring 9, a fifth return spring 11, a first limit block 12 and a protrusion 13. The first limit block 12 and the protrusion 13 are arranged on the special-shaped gear 319, the first return spring 7 is connected to the rotating plate 35, the third return spring 9 is connected to the second linkage plate 38, and the fifth return spring 11 is connected to the special-shaped gear 319. One end of the fifth return spring 11 is clamped between the first limit block 12 and the protrusion 13, and the other end of the fifth return spring 11 passes through the protrusion 13 and is connected thereto.

[0027] Optionally, the jumping module 15 includes a trigger unit, a jumping block 16 and a jumping buckle 39. The trigger unit is drivingly connected to the jumping block 16. The jumping buckle 39 is arranged on the rotating plate 35. When the trigger unit is not working, the jumping buckle 39 and the rotating plate 35 are in an unlocked state so that the rotating plate 35 can rotate relative to the jumping buckle 39. When the trigger unit is working, the jumping buckle 39 and the rotating plate 35 are in a locked state so that the rotating plate 35 can rotate synchronously with the jumping buckle 39.

[0028] Furthermore, the jumping module 15 further includes a second reset spring 8 and a fourth reset spring 10 . The second reset spring 8 is connected between the jump buckle 39 and the rotating plate 35 , and the fourth reset spring 10 is connected to the jump buckle 39 .

[0029] In this optional embodiment, combined with Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the first return spring 7, the second return spring 8, the third return spring 9, the fourth return spring 10 and the fifth return spring 11 are all torsion springs, which realize the resetting effect of the corresponding structure. Each torsion spring can be sleeved on the rotating shaft of the corresponding structure, and the two ends of each torsion spring are respectively clamped at the corresponding position of the corresponding structure and the torsion spring clamping position specially formed on the housing 36, as shown in FIG. Figure 5 As shown, at this time, the opening and closing module is in the opening position. When the opening and closing module is switched from the opening position to the closing position, the driving module 31 drives the handle connecting rod 33 to rotate counterclockwise, so that the U-shaped connecting rod 34 rotates accordingly. The rotation of the U-shaped connecting rod 34 also drives the rotating plate 35 to rotate. The lock buckle 30 will rotate under the action of the handle connecting rod 33, so that the first linkage plate 37 and the second linkage plate 38 rotate counterclockwise together until the moving contact and the static contact on the first linkage plate 37 and the second linkage plate 38 are in contact, and the moving contact and the static contact are respectively connected to the input power terminal and the output power terminal, so as to realize the closing. At this time, the trip buckle 39 is in contact with the position sensor 14, that is, Figure 6 In the state, when the current is abnormal, the jumping module 15 works, the driving trigger unit works, the jump button 39 and the rotating plate 35 are in a locked state, so that the rotating plate 35 can rotate synchronously with the jump button 39, so that the jump button 39 is separated from the position sensor 14, that is, Figure 7 At the same time, the position sensor 14 sends a signal to make the driving module 31 drive the handle connecting rod 33 to rotate clockwise, thereby returning to the open position, that is, Figure 5 In this state, the corresponding torsion spring stores torsional force. When the external force is released, the corresponding structure can return to its original position through the corresponding torsion spring.

[0030] Optionally, the drive module 31 includes a motor 315, a worm 316, a turbine 317 and a gear set 318, the motor 315 is connected to the housing 36 of the circuit breaker 2, the output shaft of the motor 315 is connected to one end of the worm 316, the worm 316 is meshingly connected to the turbine 317, the turbine 317 is meshingly connected to the gear set 318, the gear set 318 is meshingly connected to the special-shaped gear 319, and the turbine 317 and the gear set 318 are both rotatably connected to the housing 36 of the circuit breaker 2.

[0031] In this optional embodiment, combined with Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, the gear set 318 can be composed of a plurality of gears meshing with each other, wherein the lowest gear in the gear set 318 meshes with the turbine 317, and the highest gear in the gear set 318 meshes with the special-shaped gear 319. The motor 315 drives the turbine 317 to rotate through the worm 316, and then drives the special-shaped gear 319 to rotate through the gear set 318, thereby driving the handle connecting rod 33 to rotate forward or reverse, thereby realizing the opening and closing operations.

[0032] Furthermore, the driving module 31 also includes a power supply port 311, a PCB board 312, a transformer 313 and a micro control unit 314. The power supply port 311 and the PCB board 312 are both connected to the housing 36 of the circuit breaker 2. The power supply port 311 is electrically connected to the PCB board 312, the transformer 313 is electrically connected to the PCB board 312, the transformer 313 is electrically connected to the micro control unit 314, and the motor 315 is electrically connected to the micro control unit 314.

[0033] Specifically, the power supply port 311 is the power input interface of the driving module 31, which can be designed as a standard interface (such as a DC socket, a terminal block, etc.) to connect to an external power supply. The power supply port 311 is electrically connected to the PCB board 312 to transmit the external input power to the circuit system on the PCB board 312; the PCB board 312 is the electronic component carrier of the driving module 31, on which various electronic components and circuits including a transformer 313, a micro control unit 314, etc. are arranged. The PCB board 312 is electrically connected to the power supply port 311, the transformer 313, the micro control unit 314 and other components through wires or copper foil to form a complete circuit system. The PCB board 312 is also responsible for transmitting the control signal sent by the micro control unit 314 to the opening and closing module to drive the motor 315 to rotate forward and reverse; the transformer 313 is the driving module The power conversion element in 31 is responsible for converting the voltage input from the power supply port 311 into a voltage suitable for the micro control unit 314 and other electronic components to work. The transformer 313 is electrically connected to the power supply port 311 and the micro control unit 314 through the PCB board 312 to ensure that the entire drive module 31 can work normally; Micro control unit 314 (MCU): The micro control unit 314 is the control core of the drive module 31, responsible for receiving signals from external components such as the position sensor 14, and processing them according to the preset program and logic. The micro control unit 314 is electrically connected to the transformer 313, the opening and closing module and other components through the PCB board 312, and sends a control signal to drive the opening and closing module to operate. The micro control unit 314 is also responsible for monitoring the working state of the drive module 31 to ensure the stability and reliability of the entire system. The housing 36 is the external protection structure of the circuit breaker 2, which can be made of insulating material to protect the internal electronic components and circuits from interference and damage from the external environment. The power supply port 311 and the PCB board 312 and other components are connected to the housing 36 to form a complete circuit breaker 2 structure. In summary, the drive module 31 receives external power input through the power supply port 311, and supplies the power to the micro control unit 314 and other electronic components after the voltage is converted by the transformer 313. The micro control unit 314 sends a control signal according to the received signal and the preset program logic, and transmits it to the opening and closing module through the PCB board 312 to drive it to operate. The entire drive module 31 is installed inside the housing 36 of the circuit breaker 2, is protected and works normally.

[0034] Optionally, one end of the circuit breaker 2 is used to be electrically connected to the current metering module 1 through the power-taking copper sheet 6, and the other end of the circuit breaker 2 is used to be electrically connected to the leakage detection module 4 through the power-taking copper sheet 6. A display screen 5 is also provided on the circuit breaker 2, and the display screen 5, the current metering module 1 and the leakage detection module 4 are all electrically connected to the micro control unit 314.

[0035] In this optional embodiment, combined with Figure 1 , Figure 2 and Figure 3 As shown, when the abnormal current causes the trip button 39 to rotate, the trip button 39 is separated from the position sensor 14, and the position sensor 14 sends a signal to the micro control unit 314. The micro control unit 314 controls the current metering module 1 and the leakage detection module 4 to work, thereby feeding back the information to the display screen 5.

[0036] Furthermore, the safety circuit breaker also includes a protection module, which includes a sulfur hexafluoride gas cylinder 17. When the current in the circuit breaker 2 is abnormal, the sulfur hexafluoride gas cylinder 17 is used to release sulfur hexafluoride gas.

[0037] Optionally, the protection module also includes a first connecting rod 18 and a second connecting rod 19, one end of the first connecting rod 18 is arranged in the sulfur hexafluoride gas cylinder 17, the other end of the first connecting rod 18 passes through the sulfur hexafluoride gas cylinder 17 and is rotatably connected to one end of the second connecting rod 19, the other end of the second connecting rod 19 is rotatably connected to the jump buckle 39, and a ventilation groove 181 is provided on the outer peripheral surface of the first connecting rod 18. When the jump buckle 39 is not rotated, the ventilation groove 181 is located in the sulfur hexafluoride gas cylinder 17. When the jump buckle 39 rotates, the second connecting rod 19 pulls the first connecting rod 18 to move upward so that the top end of the ventilation groove 181 extends out of the sulfur hexafluoride gas cylinder 17.

[0038] In this optional embodiment, combined with Figure 5 , Figure 6 , Figure 7 and Fig.12 As shown, when the manual control driving module 31 drives the opening and closing module to perform opening and closing operations, the position of the trip button 39 will not change. At this time, the arc can be eliminated by the arc extinguishing chamber and other structures inside the circuit breaker 2. When the current is abnormal, such as when a short circuit occurs, the trip button 39 is triggered by the trigger unit and rotates clockwise, thereby pulling the first connecting rod 18 upward through the second connecting rod 19 until the top of the ventilation groove 181 protrudes from the top of the sulfur hexafluoride gas cylinder 17. At this time, the sulfur hexafluoride gas in the sulfur hexafluoride gas cylinder 17 can be transported from the bottom of the ventilation groove 181 to the top of the ventilation groove 181, so that the sulfur hexafluoride gas can enter the arc extinguishing chamber through the pipeline, and the arc is extinguished by using the cooling and insulating properties of the sulfur hexafluoride gas, thereby further improving the safety performance of the circuit breaker 2 when the current is abnormal and eliminating safety hazards.

[0039] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A safety circuit breaker, characterized in that: The invention comprises a circuit breaker (2), wherein the circuit breaker (2) comprises a control mechanism (3), wherein the control mechanism (3) comprises a drive module (31), an opening and closing module, a jump module (15), an input power terminal, an output power terminal and a position sensor (14), wherein the drive module (31) is connected to the opening and closing module so as to drive the opening and closing module to switch between an opening position and a closing position; when the opening and closing module is in the opening position, the input power terminal is disconnected from the output power terminal; when the opening and closing module is in the closing position, the input power terminal is connected to the output power terminal; when the current in the circuit breaker (2) is abnormal, the jump module (15) triggers the position sensor (14), and the position sensor (14) sends a signal to the drive module (31), so that the drive module (31) drives the opening and closing module to switch from the closing position to the opening position.

2. The safety circuit breaker according to claim 1, characterized in that: The switch opening and closing module comprises a lock (30), a special-shaped gear (319), a control handle (32), a handle connecting rod (33), a U-shaped connecting rod (34), a rotating plate (35), a first linkage plate (37) and a second linkage plate (38), wherein the control handle (32) is connected to one end of the handle connecting rod (33), the special-shaped gear (319) is sleeved on the handle connecting rod (33), one end of the U-shaped connecting rod (34) is connected to the handle connecting rod (33), the other end of the U-shaped connecting rod (34) is connected to the rotating plate (35), and the rotating plate (35) is rotatably connected to On the housing (36) of the circuit breaker (2), the first linkage plate (37) is connected to the rotating plate (35), the second linkage plate (38) is connected to the first linkage plate (37), the driving module (31) is used to drive the special-shaped gear (319) to rotate, the lock buckle (30) is rotatably connected to the housing (36), when the opening and closing module is in the opening position, the lock buckle (30) is used to lock the jumping module (15), and when the opening and closing module is in the closing position, the lock buckle (30) is used to unlock the jumping module (15).

3. The safety circuit breaker according to claim 2, characterized in that: The opening and closing module further comprises a first return spring (7), a third return spring (9), a fifth return spring (11), a first limit block (12) and a protrusion (13); the first limit block (12) and the protrusion (13) are arranged on the special-shaped gear (319); the first return spring (7) is connected to the rotating plate (35); the third return spring (9) is connected to the second linkage plate (38); the fifth return spring (11) is connected to the special-shaped gear (319); one end of the fifth return spring (11) is clamped between the first limit block (12) and the protrusion (13); the other end of the fifth return spring (11) passes through the protrusion (13) and is connected to it.

4. The safety circuit breaker according to claim 3, characterized in that: The jumping module (15) comprises a trigger unit, a jumping block (16) and a jumping button (39); the trigger unit is drivingly connected to the jumping block (16); the jumping button (39) is arranged on the rotating plate (35); when the trigger unit is not working, the jumping button (39) and the rotating plate (35) are in an unlocked state, so that the rotating plate (35) can rotate relative to the jumping button (39); when the trigger unit is working, the jumping button (39) and the rotating plate (35) are in a locked state, so that the rotating plate (35) can rotate synchronously with the jumping button (39).

5. The safety circuit breaker according to claim 4, characterized in that: The jumping module (15) further comprises a second return spring (8) and a fourth return spring (10), wherein the second return spring (8) is connected between the jumping buckle (39) and the rotating plate (35), and the fourth return spring (10) is connected to the jumping buckle (39).

6. The safety circuit breaker according to claim 5, characterized in that: The drive module (31) comprises a motor (315), a worm (316), a turbine (317) and a gear set (318); the motor (315) is connected to the housing (36) of the circuit breaker (2); the output shaft of the motor (315) is connected to one end of the worm (316); the worm (316) is meshingly connected to the turbine (317); the turbine (317) is meshingly connected to the gear set (318); the gear set (318) is meshingly connected to the special-shaped gear (319); and both the turbine (317) and the gear set (318) are rotatably connected to the housing (36) of the circuit breaker (2).

7. The safety circuit breaker according to claim 6, characterized in that: The driving module (31) further comprises a power supply port (311), a PCB board (312), a transformer (313) and a micro control unit (314); the power supply port (311) and the PCB board (312) are both connected to a housing (36) of the circuit breaker (2); the power supply port (311) is electrically connected to the PCB board (312); the transformer (313) is electrically connected to the PCB board (312); the transformer (313) is electrically connected to the micro control unit (314); and the motor (315) is electrically connected to the micro control unit (314).

8. The safety circuit breaker according to claim 7, characterized in that: One end of the circuit breaker (2) is used to be electrically connected to the current metering module (1) via a power-taking copper sheet (6), and the other end of the circuit breaker (2) is used to be electrically connected to the leakage detection module (4) via the power-taking copper sheet (6). The circuit breaker (2) is also provided with a display screen (5), and the display screen (5), the current metering module (1) and the leakage detection module (4) are all electrically connected to the micro control unit (314).

9. The safety circuit breaker according to claim 4, characterized in that: It also comprises a protection module, the protection module comprising a sulfur hexafluoride gas cylinder (17), and when an abnormality occurs in the current in the circuit breaker (2), the sulfur hexafluoride gas cylinder (17) is used to release sulfur hexafluoride gas.

10. The safety circuit breaker according to claim 9, characterized in that: The protection module further comprises a first connecting rod (18) and a second connecting rod (19); one end of the first connecting rod (18) is arranged in the sulfur hexafluoride gas cylinder (17); the other end of the first connecting rod (18) passes through the sulfur hexafluoride gas cylinder (17) and is rotatably connected to one end of the second connecting rod (19); the other end of the second connecting rod (19) is rotatably connected to the jump buckle (39); a venting groove (181) is provided on the outer peripheral surface of the first connecting rod (18); when the jump buckle (39) is not rotating, the venting groove (181) is located in the sulfur hexafluoride gas cylinder (17); when the jump buckle (39) rotates, the second connecting rod (19) pulls the first connecting rod (18) upward, so that the top end of the venting groove (181) extends out of the sulfur hexafluoride gas cylinder (17).

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