circuit breaker

Abstract

A kind of circuit breaker, including button mechanism and lever mechanism, button mechanism is connected with lever mechanism, the button mechanism is driven by lever mechanism to open and close circuit breaker, it further includes electromagnetic actuating mechanism for driving circuit breaker closing with button mechanism or lever mechanism cooperation, reliability is high and service life is long, effectively solve the existing motor and gear closing device gear wear or damage or gear gap mismatch, service life low problem.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of low-voltage electrical apparatus, and relates to a circuit breaker, in particular to an automatic opening and closing device of a circuit breaker. BACKGROUND

[0002] The existing plug-in circuit breaker for communication equipment improves the space utilization and installation efficiency, but with the development of Internet of Things technology, the existing plug-in circuit breaker cannot meet the requirements of remote monitoring and control. Most existing lever mechanisms with remote control adopt a motor and a gear mechanism to achieve this, which requires a large gear. Due to the limited use environment and design space, gear wear or damage or misalignment between gears often causes the remote control function to fail. SUMMARY

[0003] The present application aims to overcome the defects of the prior art and provide a circuit breaker that realizes automatic opening and closing based on an electromagnetic actuating mechanism.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] A circuit breaker includes a button mechanism and a lever mechanism, the button mechanism is connected with the lever mechanism, the button mechanism drives the circuit breaker to open and close through the lever mechanism, and the circuit breaker further includes an electromagnetic actuating mechanism cooperating with the button mechanism or the lever mechanism to drive the circuit breaker to close.

[0006] Preferably, the circuit breaker further includes a trip unit, the trip unit triggers the lever mechanism to trip to open the circuit breaker.

[0007] Preferably, when a short circuit and / or overload fault occurs in the circuit, the trip unit automatically triggers the lever mechanism to trip, and the trip unit receives a control signal to trigger the lever mechanism to trip.

[0008] Preferably, the electromagnetic actuating mechanism drives the button mechanism to close the circuit breaker through a linkage rod.

[0009] Preferably, the linkage rod is made of a material that can be magnetically attracted, the button mechanism includes a button provided with a button slot, one end of the linkage rod is connected to the electromagnetic actuating mechanism or the circuit breaker housing, and the other end of the linkage rod is installed in the button slot of the button.

[0010] Preferably, the linkage rod is rotatably installed in the circuit breaker housing, one end of the linkage rod is correspondingly arranged with the electromagnetic actuating mechanism, and the other end of the linkage rod is correspondingly arranged with the button mechanism. When the electromagnetic actuating mechanism is powered, the linkage rod is attracted or pushed to drive the button mechanism to move for closing operation.

[0011] Preferably, the lever mechanism comprises a rotating member, a second connecting rod, a jump buckle, a lock buckle, a main lever, the rotating member and the main lever are rotatably installed in the circuit breaker housing, the jump buckle and the lock buckle are rotatably installed on the main lever and are buckled, the rotating member is drivingly connected with the jump buckle through the second connecting rod and is connected with the button mechanism through the first connecting rod, the main lever is connected with the movable contact, and the lock buckle spring is connected with the lock buckle to provide a restoring force for the rotation of the lock buckle to the buckling direction of the jump buckle.

[0012] Preferably, the button mechanism and the first wiring terminal are arranged at one end of the circuit breaker, the second wiring terminal is arranged at the other end of the circuit breaker, the lever mechanism is arranged in the middle of the circuit breaker, the electromagnetic actuating mechanism and the first wiring terminal are located on the same side of the button mechanism, the electromagnetic actuating mechanism is located between the lever mechanism and the first wiring terminal, the arc extinguishing device and the release are arranged side by side and located between the lever mechanism and the second wiring terminal, and the overload release is arranged side by side with the lever mechanism and is located between the electromagnetic actuating mechanism and the arc extinguishing device.

[0013] Preferably, the button mechanism comprises a button, a button connecting rod, a button transmission rod and a first connecting rod connected in sequence, and the linkage rod drives the circuit breaker to close through the button or the button connecting rod or the button transmission rod.

[0014] Preferably, the linkage rod is slidingly installed in the circuit breaker housing, one end of the linkage rod is arranged corresponding to the electromagnetic actuating mechanism, and the other end of the linkage rod is matched with the button mechanism, the electromagnetic actuating mechanism drives the linkage rod to slide when powered, so that the linkage rod drives the button mechanism to move to close.

[0015] Preferably, the release comprises a separate excitation release at the front end and a short-circuit protection release at the rear end, the separate excitation release can trigger the lever mechanism to release under the control of a control signal, the short-circuit protection release can trigger the lever mechanism to release when a short-circuit fault occurs in the circuit, and the separate excitation release and the short-circuit protection release are integrated.

[0016] The circuit breaker of the present application adopts the electromagnetic actuating mechanism to drive the button mechanism to close, has high reliability and long service life, effectively solves the problems of gear wear or damage or misalignment between gears in the existing motor and gear closing device, and has low service life, and the electromagnetic actuating mechanism acts quickly and can drive the circuit breaker to close quickly.

[0017] In addition, the electromagnetic actuating mechanism drives the button mechanism through the linkage rod, which does not affect the existing manual opening and closing action, and does not need to be designed to avoid the automatic opening and closing device affecting the manual opening and closing operation like the existing motor and gear mechanism, and has simple and reliable structure. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1-2is the internal layout schematic diagram of the first embodiment of the circuit breaker in the tripping state of the application;

[0019] Fig. 3 is the internal layout schematic diagram of the first embodiment of the circuit breaker in the closing state of the application;

[0020] Fig. 4 is another embodiment schematic diagram of the button mechanism of the circuit breaker of the application;

[0021] Fig. 5-6 is the internal layout schematic diagram of another embodiment of the circuit breaker of the application;

[0022] Fig. 7 is Fig. 5 is the schematic diagram of the tripping state of part A in the embodiment;

[0023] Fig. 8 is Fig. 5 is the schematic diagram of the closing state of part A in the embodiment;

[0024] Fig. 9 is Fig. 5 is the movement trajectory diagram of the driving end of the linkage lever during the tripping and closing of the embodiment;

[0025] Fig. 10-11 is the internal layout schematic diagram of another embodiment of the circuit breaker of the application. DETAILED DESCRIPTION

[0026] The specific embodiments of the circuit breaker of the application are further described below in combination with the drawings. The circuit breaker of the application is not limited to the description of the following embodiments.

[0027] A circuit breaker comprises a circuit breaker housing 3, a button mechanism 1 and a lever mechanism 6, the button mechanism 1 is manually operated, the button mechanism 1 drives the circuit breaker to trip and close through the lever mechanism 6, an electromagnetic actuating mechanism 2 cooperates with the button mechanism 1 or the lever mechanism 6 for driving the circuit breaker to close, the electromagnetic actuating mechanism 2 triggers and drives the button mechanism 1 when receiving a closing command, so that the button mechanism 1 slides and drives the circuit breaker to close through the lever mechanism 6, thereby realizing remote control of automatic closing of the circuit breaker.

[0028] The circuit breaker of the application adopts the electromagnetic actuating mechanism 2 to drive the button mechanism 1 or the lever mechanism 6 to close, which is highly reliable and has a long service life, effectively solves the problems of gear wear or damage or misalignment between gears in the existing motor and gear closing device, and has a low service life, and the electromagnetic actuating mechanism 2 acts quickly and can drive the circuit breaker to close quickly. In particular, the electromagnetic actuating mechanism 2 is preferably used to drive the button mechanism 1 to close, and the electromagnetic actuating mechanism 2 is suitable for cooperating with the linearly moving button mechanism 1.

[0029] As a technical solution of the application, preferably, the circuit breaker further comprises a tripping device 7, the tripping device 7 triggers the lever mechanism 6 to trip to make the circuit breaker open, so as to realize remote control of automatic opening of the circuit breaker. The remote control of automatic opening and closing of the circuit breaker is realized through cooperation of the electromagnetic actuating mechanism 2 and the button mechanism 1 and cooperation of the tripping device 7 and the lever mechanism 6.

[0030] As another technical solution of the application, preferably, the electromagnetic actuating mechanism 2 cooperates with the button mechanism 1 to drive the circuit breaker to open and close. When the circuit breaker is in an open state, the electromagnetic actuating mechanism 2 triggers and drives the button mechanism 1 to slide and drive the circuit breaker to close through the lever mechanism 6 when a closing command is received; meanwhile, when the circuit breaker is in a closed state, the electromagnetic actuating mechanism 2 triggers and drives the button mechanism 1 to slide and drive the circuit breaker to open through the lever mechanism 6 when an open command is received. The circuit breaker of the present solution uses the same electromagnetic actuating mechanism 2 to drive the button mechanism 1 to open and close, which not only makes the structure compact and reduces the cost, but also has high reliability and long service life, and the electromagnetic actuating mechanism 2 acts quickly and can drive the circuit breaker to open and close quickly. As shown in FIG. 1, which shows a first embodiment of the circuit breaker of the present application, the circuit breaker of the embodiment comprises a circuit breaker housing 3, a button mechanism 1, an electromagnetic actuating mechanism 2, a lever mechanism 6, a moving contact 10, a stationary contact 11, an arc extinguishing device 9, and a tripping device 7. The button mechanism 1 is connected with the lever mechanism 6, the lever mechanism 6 is connected with the moving contact 10, the stationary contact 11 is arranged in the circuit breaker housing 3 and corresponds to the moving contact 10, and the button mechanism 1 is pressed and pulled to drive the circuit breaker to close and open through the lever mechanism 6, respectively. The electromagnetic actuating mechanism 2 triggers and drives the button mechanism 1 to slide and drive the circuit breaker to close through the lever mechanism 6 when a closing command is received, so as to realize remote control of automatic closing of the circuit breaker; the tripping device 7 triggers the lever mechanism 6 to trip to make the circuit breaker open when an open command is received, so as to realize remote control of automatic opening of the circuit breaker. Fig. 1-3

[0031] Preferably, the electromagnetic actuating mechanism 2 and the tripping device 7 can receive a closing signal and an open signal of an upper computer, such as an intelligent terminal, an electric energy meter, a switch cabinet, etc., through a signal terminal 5 arranged on the circuit breaker housing 3. Alternatively, the electromagnetic actuating mechanism 2 and the tripping device 7 can also receive a closing signal and an open signal of a microcontroller inside the circuit breaker.

[0032] ​Preferably, the circuit breaker further comprises an overload release 8, the lever mechanism 6 comprises a snap-fit trip latch 64 and a lock latch 65, the overload release 8 comprises a bimetallic strip which bends to drive the lock latch 65 on the lever mechanism 6 to trip the lever mechanism 6 to open the circuit breaker when overload occurs. The release 7 automatically triggers the lock latch 65 of the lever mechanism 6 to trip the lever mechanism 6 to open the circuit breaker when the circuit breaker fails. The release 7 can be an electromagnetic short-circuit release and / or an overload release and / or an electric leakage release, which automatically actuates the lock latch 65 of the lever mechanism 6 when the circuit breaker has a short-circuit or overload or electric leakage. For example, the release 7 is an oil-damped release, which can have both short-circuit protection and overload protection functions. The release 7 can be controlled by a microcontroller to actuate the release 7 to open the circuit breaker when under-voltage or over-voltage is detected. As shown in Fig. 2 , as a preferred embodiment, the release 7 comprises a front-end anti-pumping release 72 and a rear-end short-circuit protection release 73, the anti-pumping release 72 can be triggered by a control signal to trip the lever mechanism 6, the short-circuit protection release 73 can be triggered to trip the lever mechanism 6 when a short-circuit fault occurs in the circuit, and the anti-pumping release 72 and the short-circuit protection release 73 are integrated.

[0033] As shown in Fig. 2 , the electromagnetic actuating mechanism 2 comprises an electromagnetic body provided with a coil 22 and a linkage rod 21, the electromagnetic body drives the button mechanism 1 to open the circuit breaker through the linkage rod 21. As shown in Fig. 2 , an embodiment of the electromagnetic actuating mechanism 2 cooperating with the button mechanism 1, the electromagnetic actuating mechanism 2 comprises an electromagnetic body provided with a coil 22 and an iron linkage rod 21, the linkage rod 21 is made of a material that can be magnetically attracted, the button mechanism 1 comprises a button 101 provided with a button slot 102, the button 101 is drivingly connected to the lever mechanism 6 through a first connecting rod 106, one end of the linkage rod 21 is connected to the electromagnetic actuating mechanism 2 or the circuit breaker housing 3 and can swing around the end (a straight type can also be provided), the other end of the linkage rod 21 is installed in the button slot 102 of the button 101.

[0034] As shown in Fig. 2 , the circuit breaker is in an open state, when automatic closing, the coil 22 of the electromagnetic actuating mechanism 2 is powered, the linkage rod 21 is attracted by the magnetic field of the coil and drives the button 101 to move towards the inside of the circuit breaker, when the button 101 moves, the rotating member 61 is driven to rotate clockwise through the first connecting rod 106, the linkage mechanism 6 is driven to make the movable contact 10 contact the static contact 11 to close the circuit breaker, automatic closing is realized, the coil of the electromagnetic actuating mechanism 2 is de-energized, the linkage rod 21 is reset by a linkage rod reset spring, of course, the linkage rod reset spring can not be provided. At this time, the circuit breaker is in Fig. 3 , a closed state.

[0035] like Fig. 3 As shown, the circuit breaker is in the closed state. When the circuit breaker is automatically opened, the trip unit 7 is energized, and the push rod 71 in the trip unit 7 moves to push the lock 65 of the lever mechanism 6 to rotate counterclockwise, releasing the hasp connection between the lock 65 and the tripping catch 63. The lever mechanism 6 is tripped to realize the circuit breaker opening, and the button spring drives the button 101 to reset.

[0036] like Fig. 2 As shown, the circuit breaker is in the open state. When manually closing the circuit breaker, the button 101 is manually pressed to move toward the inside of the circuit breaker. When the button 101 moves, the rotating member 61 is driven to rotate clockwise through the first connecting rod 106, driving the connecting rod mechanism 6 to make the moving contact 10 and the static contact 11 contact and close the circuit breaker, thereby realizing manual closing. At the same time, the button 101 also drives the linkage rod 21 to rotate to a position close to the electromagnetic body. At this time, the circuit breaker is in the open state. Fig. 3 The closing state is shown.

[0037] like Fig. 3 As shown, the circuit breaker is in the closed state. When manually opening, the button 101 is manually pulled to move outside the circuit breaker. When the button 101 moves, the first connecting rod 106 drives the rotating member 61 to rotate counterclockwise, driving the connecting rod mechanism 6 to separate the moving contact 10 from the static contact 11, thereby realizing manual opening. At the same time, the button 101 also drives the linkage rod 21 to rotate to a position relatively far away from the electromagnetic body. At this time, the circuit breaker is in the closed state. Fig. 3 The closing state is shown.

[0038] Another improvement of the electromagnetic actuation mechanism 2 using this solution is that it does not require consideration of how to prevent the automatic opening and closing device from affecting manual opening and closing operations, as is required with existing automatic opening and closing solutions using a motor and a gear mechanism. Existing automatic opening and closing solutions using a motor and a gear mechanism require the use of micro switches, contacts, or sensors to monitor the closing position, opening position, and / or initial position of the motor or gear, require the gear to stop or reverse after it reaches the corresponding position, and require the use of a corresponding avoidance mechanism on the gear mechanism or button mechanism so that after the motor and gear mechanism drive the circuit breaker to close or open, the button mechanism can still be manually driven to open or close the circuit breaker. However, the electromagnetic actuating mechanism 2 of this solution does not require corresponding design. The electromagnetic actuating mechanism 2 has only two states: the linkage rod 21 is attracted and not attracted. When the linkage rod 21 is attracted, the button 101 is driven to close the circuit breaker. Then the coil 22 of the electromagnetic actuating mechanism 2 loses power and the linkage rod 21 is no longer attracted. The button 101 can be manually pulled, and the button 101 drives the linkage rod 21 to swing back and at the same time, the first connecting rod 106 drives the rotating member 61 to rotate counterclockwise to realize manual opening. The button 101 can also be pressed again to realize manual closing. The structure is simple and does not affect each other.

[0039] As another embodiment, the electromagnetic actuating mechanism 2 can also drive the linkage rod 21 in the way of a push rod. The linkage rod 21 can be a non-magnetic plastic piece. The linkage rod 21 is rotatably installed in the circuit breaker housing 3. One end of the linkage rod 21 is arranged corresponding to the push rod of the electromagnetic actuating mechanism 2. The other end of the linkage rod 21 is arranged corresponding to the button mechanism 1. When the electromagnetic actuating mechanism 2 is powered, the linkage rod 21 is hit by the push rod of the electromagnetic actuating mechanism 2 at one end, so that the linkage rod 21 drives the button mechanism 1 to move to perform the closing operation.

[0040] As another embodiment, the circuit breaker housing is provided with a sliding groove for the linear sliding of the linkage rod 21. One end of the linkage rod 21 is arranged corresponding to the electromagnetic actuating mechanism 2. The other end of the linkage rod 21 is arranged corresponding to the button mechanism 1. When the electromagnetic actuating mechanism 2 is powered, the linkage rod 21 is driven to slide by the electromagnetic actuating mechanism 2, so that the linkage rod 21 drives the button mechanism 1 to move to perform the closing operation. When the electromagnetic actuating mechanism 2 is powered, the linkage rod 21 is attracted to slide by the electromagnetic actuating mechanism 2, and the button mechanism 1 is pulled to close by the pull hook on the linkage rod 21. Alternatively, when the electromagnetic actuating mechanism 2 is powered, the linkage rod 21 is hit to slide, and the button mechanism 1 is pushed to close by the linkage rod 21. When the electromagnetic actuating mechanism 2 is powered off, the linkage rod 21 is reset by the linkage rod spring, or is reset by the button mechanism 1 when the circuit breaker is opened again.

[0041] As another embodiment, two electromagnetic actuating mechanisms 2 can be arranged. One is used to drive the button mechanism 1 to perform the closing operation. The other is used to drive the button mechanism 1 to perform the opening operation. The opening operation is not triggered by the release 7. In this way, too many mechanisms are used, the circuit breaker is large in size, and the cost is high.

[0042] As another embodiment, as shown in FIG. 6, the linkage rod 21 is arranged corresponding to the electromagnetic actuating mechanism 2. The linkage rod 21 is arranged corresponding to the button mechanism 1. When the electromagnetic actuating mechanism 2 is powered, the linkage rod 21 is hit by the electromagnetic actuating mechanism 2 at one end, so that the linkage rod 21 drives the button mechanism 1 to move to perform the closing operation. Fig. 4As shown, the button mechanism 1 includes the button 101, the button connecting rod 103, the button transmission rod 104 and the first connecting rod 106 connected in sequence, the button protrusion 105 cooperating with the linkage rod 21 is arranged on the button 101 or the button connecting rod 103 or the button transmission rod 104, the button protrusion 105 is arranged on the button transmission rod 104 in the embodiment, one end of the button 101 extends out of the circuit breaker shell 3 for operation, the button transmission rod 104 is linearly slidably arranged in the circuit breaker shell 3, the button 101, the button connecting rod 103, the button transmission rod 104 and the first connecting rod 106 drive the lever mechanism 6 in sequence to drive the circuit breaker to perform opening and closing operation, the relatively long button 101 is replaced by the button 101, the button connecting rod 103 and the button transmission rod 104, and the button 101 or the button connecting rod 103 or the button transmission rod 104 is facilitated to cooperate with the plug-in type locking mechanism. The linkage rod 21 is rotationally arranged in the circuit breaker shell 3, one end of the linkage rod 21 is correspondingly arranged with the electromagnetic actuating mechanism 2, and the other end of the linkage rod 21 is correspondingly arranged with the button protrusion 105, the linkage rod 21 is rotated when the electromagnetic actuating mechanism 2 is electrified, the linkage rod 21 drives the button transmission rod 104 to slide through the first connecting rod 106 to drive the rotating member 61 to rotate counterclockwise to realize closing, and the linkage rod 21 also drives the button 101 to slide to Fig. 3 As shown, the button mechanism 1 includes the button 101, the button connecting rod 103, the button transmission rod 104 and the first connecting rod 106 connected in sequence, the button protrusion 105 cooperating with the linkage rod 21 is arranged on the button 101 or the button connecting rod 103 or the button transmission rod 104, the button protrusion 105 is arranged on the button transmission rod 104 in the embodiment, one end of the button 101 extends out of the circuit breaker shell 3 for operation, the button transmission rod 104 is linearly slidably arranged in the circuit breaker shell 3, the button 101, the button connecting rod 103, the button transmission rod 104 and the first connecting rod 106 drive the lever mechanism 6 in sequence to drive the circuit breaker to perform opening and closing operation, the relatively long button 101 is replaced by the button 101, the button connecting rod 103 and the button transmission rod 104, and the button 101 or the button connecting rod 103 or the button transmission rod 104 is facilitated to cooperate with the plug-in type locking mechanism. The linkage rod 21 is rotationally arranged in the circuit breaker shell 3, one end of the linkage rod 21 is correspondingly arranged with the electromagnetic actuating mechanism 2, and the other end of the linkage rod 21 is correspondingly arranged with the button protrusion 105, the linkage rod 21 is rotated when the electromagnetic actuating mechanism 2 is electrified, the linkage rod 21 drives the button transmission rod 104 to slide through the first connecting rod 106 to drive the rotating member 61 to rotate counterclockwise to realize closing, and the linkage rod 21 also drives the button 101 to slide to

[0043] It should be noted that the button mechanism 1 can also be pressed to open and pulled to close, and the electromagnetic actuating mechanism 2 can also be rotationally arranged, and the attraction end of the electromagnetic main body of the electromagnetic actuating mechanism 2 is arranged towards the lever mechanism side. The linkage rod 21 can be rotationally arranged or linearly arranged, and a corresponding limiting protrusion or limiting groove can also be arranged in the circuit breaker shell 3 to guide and limit the rotation range or sliding range of the linkage rod 21. The button mechanism 1 can be provided with the button slot 102 or other cooperating structures cooperating with the linkage rod 21, which all belong to the protection scope of the present application.

[0044] As shown in the drawings, Fig. 3 As shown, the button mechanism 1 includes the button 101 provided with the button slot 102, the button 101 is drivingly connected with the lever mechanism 6 through the first connecting rod 106, and the button spring is connected with the button 101 to drive the button 101 to move outwards of the circuit breaker shell 3. The lever mechanism of the present application is a four / five connecting rod structure, as shown in the drawings, Fig. 3As shown in the figure, an embodiment of the lever mechanism 6 of the application comprises a rotating member 61, a second connecting rod 62, a jump buckle 63, a lock buckle 65, and a main lever 64, the rotating member 61 and the main lever 64 are rotatably installed in the circuit breaker housing 3, the jump buckle 63 and the lock buckle 65 are rotatably installed on the main lever 64 and are snap connected, the rotating member 61 is drivingly connected with the jump buckle 63 through the second connecting rod 62 and is connected with the button mechanism 1 through the first connecting rod 106, the main lever 64 is connected with the movable contact 10, and a lock buckle spring is connected with the lock buckle 65 to provide a restoring force for rotating the lock buckle 65 to the direction of snap connection with the jump buckle 63. Of course, the lever mechanism 6 can also adopt other four / five connecting rod structures.

[0045] Preferably, as Fig. 1 As shown in the figure, the circuit breaker of the embodiment is an insertion type circuit breaker, the button mechanism 1 and the first wiring terminal 12 are arranged at one end of the circuit breaker, the second wiring terminal 4 and the signal terminal 5 are arranged at the other end of the circuit breaker, the lever mechanism 6 is arranged in the middle of the circuit breaker, the electromagnetic actuating mechanism 2 and the first wiring terminal 12 are located on the same side of the button mechanism 1, and the electromagnetic actuating mechanism 2 is located between the lever mechanism 6 and the first wiring terminal 12, the arc extinguishing device 9 and the release 7 are arranged side by side and are located between the lever mechanism 6 and the second wiring terminal 4, and the overload release 8 is arranged side by side with the lever mechanism 6 and is located between the electromagnetic actuating mechanism 2 and the arc extinguishing device 9. The circuit breaker of the embodiment has a reasonable internal layout design, the layout between the components is compact, the overall size of the circuit breaker can be effectively reduced, and the development trend of miniaturization of the circuit breaker is met.

[0046] As another technical solution of the application, the electromagnetic actuating mechanism 2 cooperates with the lever mechanism 6 to drive the circuit breaker to close. For example, the electromagnetic actuating mechanism 2 drives the rotating member 61 to rotate to the closing direction to realize closing. In an embodiment, a closing drive arm is protrudingly arranged on the rotating member 61, and the electromagnetic actuating mechanism 2 pushes or attracts the closing drive arm to drive the rotating member 61 to rotate to the closing direction to realize closing when receiving a closing command. As another embodiment, the electromagnetic actuating mechanism 2 drives the rotating member 61 to close the circuit breaker through a linkage rod 21, the linkage rod 21 is rotatably installed on the electromagnetic actuating mechanism 2 or the circuit breaker housing 3, and the electromagnetic actuating mechanism 2 pushes or attracts the linkage rod 21 to drive the rotating member 61 to rotate to the opening direction to realize opening when receiving an opening command.

[0047] As Fig. 5-6FIG. 1 shows another embodiment of a circuit breaker of the present invention. This embodiment has the same overall structure and function as the first embodiment, and includes a circuit breaker housing 3, a button mechanism 1, an electromagnetic actuator 2, a lever mechanism 6, a movable contact 10, a stationary contact 11, an arc extinguishing device 9, a trip unit 7, a first terminal 12, a second terminal 4, and a signal terminal 5. This embodiment differs from the first embodiment in that the same electromagnetic actuator 2 and button mechanism 1 cooperate to drive the circuit breaker to close and open.

[0048] When the circuit breaker is in the open state, the button mechanism 1 is manually pressed, and the button mechanism 1 drives the circuit breaker to close through the lever mechanism 6. Alternatively, when the coil 22 of the electromagnetic actuator mechanism 2 is energized, the linkage rod 21 is attracted by the magnetic field of the coil, driving the button mechanism 1 to move toward the inside of the circuit breaker, driving the circuit breaker to close, and then the electromagnetic actuator mechanism 2 is powered off.

[0049] When the circuit breaker is in the closed state, pressing the button mechanism 1 again drives the circuit breaker to open through the lever mechanism 6, realizing manual opening; or, when the coil 22 of the electromagnetic actuator mechanism 2 is energized, the linkage rod 21 is attracted by the magnetic field of the coil, driving the button 101 to move toward the inside of the circuit breaker, driving the circuit breaker to open, realizing automatic opening, and then the electromagnetic actuator mechanism 2 is powered off.

[0050] like Fig. 5-6 As shown, the lever mechanism 6 includes a linkage lever 14 connected to the button mechanism 1, and a guide groove 31 is provided in the circuit breaker housing 3. One end of the linkage lever 14 is rotatably mounted on the button mechanism 1, and the other end is a driving end 141 provided in the guide groove 31. When the circuit breaker is in the open state, the button mechanism 1 is pressed to drive the button mechanism 1 to move toward the inside of the circuit breaker housing 3, and the button mechanism 1 drives the circuit breaker to close. At the same time, the driving end 141 of the linkage lever 14 moves to a position coordinated with the lock 65 of the lever mechanism 6 under the guidance of the guide groove 31. When the circuit breaker is in the closed state, the button mechanism 1 is pressed again, and the driving end 141 of the linkage lever 14 drives the lock 65 to rotate, so that the lock 65 and the tripping buckle 63 are released from the lock, so that the lever mechanism 6 is tripped to realize the circuit breaker opening, and the driving end 141 of the linkage lever 14 returns to the initial position.

[0051] like Fig. 7-9As shown, the inside wall of the circuit breaker housing 3 is provided with a guide groove 31 and a guide boss 311 located in the guide groove 31, the guide groove 31 surrounds the guide boss 311, when the button mechanism 1 is pressed, the driving end 141 of the driving linkage lever 14 is slid from one side of the guide boss 311 to a position matched with the lock catch 65, and then the button mechanism 1 is pressed again to drive the linkage lever 14 to trigger the lever mechanism 6 to trip to realize the opening of the circuit breaker, after that, the button spring drives the button 101 to reset, and at the same time, the driving end 141 of the linkage lever 14 is reset from the other side of the guide boss 311, and the driving end 141 of the linkage lever 14 moves around the guide boss 311 in the guide groove 31.

[0052] A specific preferred embodiment is as follows: Fig. 7-9 As shown, the guide groove 31 includes a first guide groove 310, a second guide groove 312, a third guide groove 313, a fourth guide groove 314 and a fifth guide groove 315 connected in sequence, the first guide groove 310, the second guide groove 312, the third guide groove 313, the fourth guide groove 314 and the fifth guide groove 315 are connected to form a ring-shaped guide groove 31 around the guide boss 311, the first guide groove 310 extends outwardly to form a Y shape with the second guide groove 312 and the fifth guide groove 315, the third guide groove 313 and the fourth guide groove 314 are connected and opposite to a guide side surface 316 of one side of the guide boss 311, when the button mechanism 1 drives the closing of the circuit breaker, the driving end 141 of the driving linkage lever 14 enters the third guide groove 313 from the first guide groove 310 and the second guide groove 312, after the closing of the circuit breaker, the button mechanism 1 is slightly reset (the reset of the over-travel part of the moving and static contacts) under the driving of the button spring, the driving end 141 of the driving linkage lever 14 enters the fourth guide groove 314 under the guidance of the guide side surface 316, and is arranged opposite to the lock catch 65; the button mechanism 1 is pressed again, the driving end 141 of the driving linkage lever 14 moves away from the fifth guide groove 315 to trigger the lever mechanism 6 to trip to realize the opening of the circuit breaker, and then the button mechanism 1 is reset under the driving of the button spring, and the driving end 141 of the driving linkage lever 14 returns to the initial position of the first guide groove 310 from the fourth guide groove 314 and the fifth guide groove 315.

[0053] Preferably, the second guide groove 312 is an inclined slope, the highest edge of the slope of the second guide groove 312 is connected to the guide side surface 316 of the boss 311, and is in communication with the third guide groove 313, the groove surface of the third guide groove 313 is lower than that of the second guide groove 312, so that the driving end 141 of the linkage lever 14 cannot return to the second guide groove 312 after entering the third guide groove 313 from the first guide groove 310 and the second guide groove 312, but enters the fourth guide groove 314 along the guide side surface 316. Further, the groove surface of the fourth guide groove 314 is lower than that of the third guide groove 313, the fifth guide groove 315 is a guide slope, the highest edge of the guide slope of the fifth guide groove 315 is connected to the first guide groove 310, and the connection surface of the fifth guide groove 315 and the first guide groove 310 is higher than the first guide groove 310, so that the circuit breaker cannot return to the third guide groove 313 from the fourth guide groove 314 when the circuit breaker is opened, but is reset to the first guide groove 310 along the fifth guide groove 315.

[0054] Of course, for the structure for realizing that the linkage lever 14 moves to the position matched with the lock catch 65 of the lever mechanism 6 when the circuit breaker is closed, so that the linkage lever 14 can drive the lever mechanism 6 to be tripped by pressing the button mechanism 1 again, the linkage lever 14 can also be reset to the initial position by using other similar existing technical solutions.

[0055] In the embodiment, the structure of the lever mechanism 6 is the same as that of the first embodiment, and will not be described again. The lock catch 65 is rotatably installed, and is provided with a clasp arm matched with the clasp 63, a first driving arm matched with the trip 7 and an overload tripping device 8, and a third driving arm matched with the linkage lever 14. Of course, the linkage lever 14 can also share a driving arm with the trip 7 and the overload tripping device 8. Of course, the trip 7 or the overload tripping device 8 can also not be provided according to needs, and other protection tripping devices can be used.

[0056] When the circuit breaker is in the open state, the circuit breaker is automatically closed, the electromagnetic actuating mechanism 2 is powered on, the linkage lever 21 is attracted by the electromagnetic force, the button mechanism 1 is driven to move to the right to close, the driving end 141 of the linkage lever 14 enters the third guide groove 313, the button mechanism 1 drives the rotating piece 61 to rotate clockwise through the first connecting rod 106, the connecting rod mechanism 6 is driven to make the movable contact 10 contact the static contact 11 to close, automatic closing is realized, the electromagnetic actuating mechanism 2 is powered off, the linkage lever 21 returns to the initial position under the action of the spring, the button mechanism 1 is reset to the left by a small stroke under the action of the button spring, and the driving end 141 of the linkage lever 14 enters the fourth guide groove 314 under the guidance of the guide side surface 316, and is arranged opposite to the lock catch 65.

[0057] In the current closing state, when the automatic opening is performed, the electromagnetic actuating mechanism 2 is powered again, the linkage lever 21 is attracted to the coil 22 side, the button mechanism 1 is moved to the right side, the linkage lever 14 is slid in the fourth guide groove 314 area in the arrow direction, at this time, the driving end 141 pushes the lock catch 65, the jump catch 63 is disengaged from the lock catch 65, the lever mechanism 6 is disintegrated to realize the opening of the circuit breaker, and after the coil is powered off, the button mechanism 1 is reset to the left under the action of the button spring and drives the linkage lever 14 to slide in the fifth guide groove 315 to the first guide groove 310 for resetting.

[0058] As another technical solution of the application, the electromagnetic actuating mechanism 2 cooperates with the lever mechanism 6 to drive the circuit breaker to open and close. For example, when the electromagnetic actuating mechanism 2 receives a closing command, the rotating part 61 is driven to rotate to realize closing, at the same time, the rotating part 61 also drives the button mechanism 1 to move into the circuit breaker housing 3, and the linkage lever 14 moves to the position cooperating with the lock catch 65 of the lever mechanism 6. When the electromagnetic actuating mechanism 2 receives a closing command, the lever mechanism 6 is pushed again to rotate in the same direction as when closing, drives the button mechanism 1 to move into the circuit breaker housing 3, and the linkage lever 14 drives the lock catch 65 to realize tripping and opening. The electromagnetic actuating mechanism 2 can directly cooperate with the closing driving arm of the rotating part 61, or cooperate with the rotating part 61 through the linkage lever 21.

[0059] It should be noted that, similar to the first embodiment, the electromagnetic actuating mechanism 2 can also drive the linkage lever 21 in the way of a jacking rod, the button mechanism 1 can adopt other schemes similar to Fig. 4 and all belong to the protection scope of the application.

[0060] As shown in Fig. 9-10 , the third embodiment of the application is basically the same as the structure of the embodiment Fig. 5-9 , and the difference lies in that one end of the linkage lever 14 is connected with the electromagnetic actuating mechanism 2, instead of being connected with the button mechanism 1. The circuit breaker housing 3 is provided with a guide groove 31, one end of the linkage lever 14 is rotatably installed on the linkage lever 21, and the other end is provided as a driving end 141 in the guide groove 31.

[0061] The electromagnetic actuating mechanism 2 drives the button mechanism 1 through the linkage lever 21, one end of the linkage lever 21 is correspondingly provided with the electromagnetic actuating mechanism 2, and the other end is linked with the button mechanism 1. As shown in Fig. 9The button mechanism 1 is provided with a button slot, one end of the linkage lever 21 is rotatably installed on the circuit breaker housing 3 or the electromagnetic actuating mechanism 2, and the other end extends into the button slot and is linked with the button mechanism 1. The electromagnetic actuating mechanism 2 attracts or strikes the linkage lever 21 to drive the button mechanism 1. When the button mechanism 1 is pressed, the button mechanism 1 also drives the linkage lever 21 to move. When the circuit breaker is in the open state, the electromagnetic actuating mechanism 2 drives the linkage lever 21 to move, and the linkage lever 21 drives the button mechanism 1 to move towards the inside of the circuit breaker to close the circuit breaker, realizing automatic closing, or the button mechanism 1 is pressed to move towards the inside of the circuit breaker to manually close the circuit breaker while the button mechanism 1 drives the linkage lever 21. That is, the electromagnetic actuating mechanism 2 drives the linkage lever 21, or the button mechanism 1 drives the linkage lever 21, and the linkage lever 21 drives the linkage lever 14 to move the driving end 141 to the position matched with the locking catch 65 of the lever mechanism 6 under the guidance of the guide slot 31. When the circuit breaker is in the closed state, the electromagnetic actuating mechanism 2 drives the linkage lever 21 to drive the button mechanism 1 to move towards the inside of the circuit breaker, or the button mechanism 1 is pressed to drive the linkage lever 21 to move towards the inside of the circuit breaker, the linkage lever 21 drives the linkage lever 14, the driving end 141 drives the locking catch 65 to release the lever mechanism 6 to realize the opening of the circuit breaker, and the driving end 141 of the linkage lever 14 returns to the initial position.

[0062] The above is a further detailed description of the present application in combination with specific preferred embodiments, and cannot be deemed as limiting the specific implementation of the present application to these descriptions. For ordinary skilled persons in the technical field of the present application, several simple deductions or replacements can be made without departing from the concept of the present application, and all of them shall be deemed as falling within the protection scope of the present application.

Claims

1. A circuit breaker, comprising a button mechanism (1) and a lever mechanism (6), wherein the button mechanism (1) is connected to the lever mechanism (6), and the button mechanism (1) drives the circuit breaker to open or close via the lever mechanism (6), characterized in that: The invention also includes an electromagnetic actuating mechanism (2) that cooperates with a button mechanism (1) or a lever mechanism (6) to drive the circuit breaker to close. When the electromagnetic actuating mechanism (2) receives a closing command, it drives the button mechanism (1) or the lever mechanism (6) to close the circuit breaker, thereby realizing automatic closing of the remote-controlled circuit breaker. The invention also includes a tripping device (7). When the tripping device (7) receives an opening command, it triggers the lever mechanism (6) to trip and open the circuit breaker, thereby realizing automatic opening of the remote-controlled circuit breaker. The button mechanism (1) and the first contact are connected. The wire terminal (12) is arranged at one end of the circuit breaker, the second terminal (4) is arranged at the other end of the circuit breaker, the lever mechanism (6) is arranged in the middle of the circuit breaker, the electromagnetic actuating mechanism (2) and the first terminal (12) are located on the same side of the button mechanism (1), and the electromagnetic actuating mechanism (2) is located between the lever mechanism (6) and the first terminal (12), and the arc extinguishing device (9) and the trip unit (7) are arranged side by side and located between the lever mechanism (6) and the second terminal (4).

2. The circuit breaker according to claim 1, wherein: When a short circuit and / or overload fault occurs in the line, the tripper (7) automatically triggers the lever mechanism (6) to trip.

3. The circuit breaker according to claim 1, wherein: The electromagnetic actuating mechanism (2) comprises an electromagnetic main body provided with a coil (22) and a linkage rod (21). The electromagnetic actuating mechanism (2) drives the button mechanism (1) via the linkage rod (21) to close the circuit breaker.

4. The circuit breaker according to claim 3, wherein: When the circuit breaker is in the open state, the button (101) is manually pressed to move toward the inside of the circuit breaker. When the button (101) moves, it drives the connecting rod mechanism (6) to make the moving contact (10) and the static contact (11) contact and close the circuit breaker, thereby realizing manual closing. At the same time, the button (101) drives the linkage rod (21) to rotate to a position close to the electromagnetic body. When the circuit breaker is in a closed state, the button (101) is manually pulled to move toward the outside of the circuit breaker. When the button (101) moves, it drives the connecting rod mechanism (6) to separate the moving contact (10) from the static contact (11), thereby realizing manual opening. At the same time, the button (101) also drives the linkage rod (21) to rotate to a position relatively far away from the electromagnetic body.

5. The circuit breaker according to claim 4, characterized in that: The linkage rod (21) is made of a material capable of being magnetically attracted, the button mechanism (1) comprises a button (101) provided with a button slot (102), one end of the linkage rod (21) is connected to the electromagnetic actuation mechanism (2) or the housing (3), and the other end of the linkage rod (21) is installed in the button slot (102) of the button (101).

6. The circuit breaker according to claim 3, wherein: A linkage rod (21) is rotatably mounted in the circuit breaker housing (3), one end of which is corresponding to the electromagnetic actuating mechanism (2), and the other end of which is corresponding to the button mechanism (1). When the electromagnetic actuating mechanism (2) is energized, the linkage rod (21) is attracted or pushed to drive the button mechanism (1) to move and perform a closing operation.

7. The circuit breaker according to claim 1, wherein: The lever mechanism (6) comprises a rotating member (61), a second connecting rod (62), a tripping catch (63), a locking catch (65), and a main lever (64); the rotating member (61) and the main lever (64) are rotatably mounted in the circuit breaker housing (3); the tripping catch (63) and the locking catch (65) are rotatably mounted on the main lever (64) and are snap-connected; the rotating member (61) is drive-connected to the tripping catch (63) via the second connecting rod (62) and is connected to the button mechanism (1) via the first connecting rod (106); the main lever (64) is connected to the moving contact (10); and a locking catch spring is connected to the locking catch (65) to provide a reset force for rotating the locking catch (65) in the direction of snap connection with the tripping catch (63).

8. The circuit breaker according to claim 1, wherein: It also includes an overload release (8), which is arranged side by side with the lever mechanism (6), and the overload release (8) is located between the electromagnetic actuation mechanism (2) and the arc extinguishing device (9).

9. The circuit breaker according to claim 4, characterized in that: The button mechanism (1) comprises a button (101), a button connecting rod (103), a button transmission rod (104) and a first connecting rod (106) connected in sequence; one end of the button (101) extends out of the circuit breaker housing (3) for operation; the button transmission rod (104) is linearly slidably installed in the circuit breaker housing (3); the button (101), the button connecting rod (103), the button transmission rod (104) and the first connecting rod (106) sequentially drive the lever mechanism (6) to perform opening and closing operations; the linkage rod (21) drives the circuit breaker to close via the button (101) or the button connecting rod (103) or the button transmission rod (104).

10. The circuit breaker according to claim 4, wherein: The linkage rod (21) is slidably mounted in the circuit breaker housing (3); one end of the linkage rod (21) is correspondingly arranged with the electromagnetic actuating mechanism (2), and the other end cooperates with the button mechanism (1); the electromagnetic actuating mechanism (2) is energized to drive the linkage rod (21) to slide, so that the linkage rod (21) drives the button mechanism (1) to move and close the circuit.

11. The circuit breaker according to claim 2, wherein: The release (7) comprises a shunt release (72) located at the front end and a short-circuit protection release (73) located at the rear end, wherein the shunt release (72) can receive a control signal to trigger the lever mechanism (6) to trip, and the short-circuit protection release (73) can trigger the lever mechanism (6) to trip when a short-circuit fault occurs in the line, and the shunt release (72) and the short-circuit protection release (73) are an integrated structure.

Images