circuit breaker

Abstract

A circuit breaker comprises 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 comprises an electromagnetic actuating mechanism matched with the button mechanism or the lever mechanism and used for driving the circuit breaker to open and close, the same electromagnetic actuating mechanism is used to drive the button mechanism to open and close, so that the structure is compact, the cost is reduced, the reliability is high and the service life is long.

Description

Technical Field

[0001] This invention belongs to the field of low-voltage electrical appliances and relates to a circuit breaker, specifically an automatic opening and closing device for a circuit breaker. Background Technology

[0002] Current communication equipment uses plug-in circuit breakers, which improves space utilization and installation efficiency. However, with the development of IoT technology, existing plug-in circuit breakers cannot meet the requirements for remote monitoring and control. Most existing lever mechanisms with remote control use motors and gear mechanisms, which place high demands on the gears. Due to limited operating environment and design space, gear wear, damage, or misalignment often leads to the failure of remote control functions. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a circuit breaker that achieves automatic opening and closing based on an electromagnetic actuation mechanism.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A circuit breaker includes a button mechanism and a lever mechanism, the button mechanism being connected to the lever mechanism, the button mechanism driving the circuit breaker to open and close via the lever mechanism, and also includes an electromagnetic actuation mechanism that cooperates with the button mechanism or the lever mechanism to drive the circuit breaker to close and open.

[0006] Preferably, when the circuit breaker is in the open state, the electromagnetic actuation mechanism drives the button mechanism to move into the circuit breaker through the linkage rod to achieve closing; and when the circuit breaker is in the closed state, the electromagnetic actuation mechanism drives the button mechanism to move into the circuit breaker through the linkage rod to achieve opening.

[0007] Preferably, the linkage rod is made of a material that can be magnetically attracted, the button mechanism includes a button with a button slot, one end of the linkage rod is connected to an electromagnetic actuation mechanism or a circuit breaker housing, and the other end of the linkage rod is installed in the button slot of the button.

[0008] Preferably, the linkage rod is rotatably installed inside the circuit breaker housing, with one end corresponding to the electromagnetic actuation mechanism and the other end corresponding to the button mechanism. When the electromagnetic actuation mechanism is energized, it drives the button mechanism to move by attracting or pushing the linkage rod to perform the closing operation.

[0009] Preferably, when the circuit breaker is in the open state, pressing the button mechanism drives the circuit breaker to close via the lever mechanism; when the circuit breaker is in the closed state, pressing the button mechanism drives the circuit breaker to open via the lever mechanism.

[0010] Preferably, the circuit breaker includes a linkage lever connected to the push button mechanism. The circuit breaker housing is provided with a guide groove. One end of the linkage lever is rotatably mounted on the push button mechanism, and the other end is a drive end disposed in the guide groove. When the circuit breaker is in the open state, the push button mechanism moves into the circuit breaker to drive the circuit breaker to close. At the same time, the drive end of the linkage lever moves under the guidance of the guide groove to a position that engages with the latch of the lever mechanism. When the circuit breaker is in the closed state, the push button mechanism moves into the circuit breaker, and the drive end of the linkage lever drives the latch to disengage the lever mechanism and realize the circuit breaker opening. The drive end of the linkage lever returns to its initial position.

[0011] Preferably, the circuit breaker includes a linkage lever connected to an electromagnetic actuation mechanism. A guide groove is provided inside the circuit breaker housing. One end of the linkage lever is rotatably mounted on a linkage rod, and the other end, serving as a drive end, is located within the guide groove. One end of the linkage rod corresponds to the electromagnetic actuation mechanism, and the other end is linked to a button mechanism. When the circuit breaker is in the open state, the electromagnetic actuation mechanism drives the linkage rod to move the button mechanism inwards to close the circuit breaker, or presses the button mechanism to move it inwards to close the circuit breaker while simultaneously actuating the linkage rod. The linkage rod then drives the linkage lever, causing the drive end to move under the guidance of the guide groove to a position engaging with the latch of the lever mechanism. When the circuit breaker is in the closed state, the electromagnetic actuation mechanism drives the linkage rod to move the button mechanism inwards to close the circuit breaker, or presses the button mechanism to move it inwards to a position engaging the linkage rod. The linkage rod then drives the linkage lever, and the drive end drives the latch to disengage the lever mechanism, thus opening the circuit breaker. The drive end of the linkage lever returns to its initial position.

[0012] Preferably, the guide groove includes a first guide groove, a second guide groove, a third guide groove, a fourth guide groove, and a fifth guide groove connected in sequence. The first guide groove, the second guide groove, the third guide groove, the fourth guide groove, and the fifth guide groove are connected to form an annular guide groove around the guide boss. The first guide groove extends outward to form a Y-shape with the second guide groove and the fifth guide groove. The third guide groove and the fourth guide groove are connected and are opposite to the guide side of one side of the guide boss. When the button mechanism drives the circuit breaker to close, the driving end of the linkage lever enters the third guide groove from the first guide groove and the second guide groove. After the circuit breaker closes, the button mechanism is slightly reset under the drive of the button spring, driving the driving end of the linkage lever to enter the fourth guide groove under the guidance of the guide side, and is set opposite to the latch. When the button mechanism is pressed again, the button mechanism drives the driving end of the linkage lever to move away from the fifth guide groove, triggering the lever mechanism to trip and realize the circuit breaker opening. The button mechanism is reset under the drive of the button spring, driving the driving end of the linkage lever to return from the fourth guide groove and the fifth guide groove to the initial position of the first guide groove.

[0013] Preferably, the lever mechanism includes a rotating component, a second link, a trip latch, a locking latch, and a main lever. The rotating component and the main lever are rotatably mounted inside the circuit breaker housing. The trip latch and the locking latch are rotatably mounted on the main lever and are connected by a latch. The rotating component is driven by the trip latch through the second link and is connected to the button mechanism through the first link. The main lever is connected to the moving contact. The locking latch spring is connected to the locking latch to provide a restoring force for the locking latch to rotate in the direction of the latch connection with the trip latch.

[0014] Preferably, the button mechanism includes a button, a button linkage, a button transmission rod, and a first linkage connected in sequence, and the linkage rod drives the circuit breaker to close via the button, the button linkage, or the button transmission rod.

[0015] Preferably, the linkage rod is slidably installed inside the circuit breaker housing. One end of the linkage rod is correspondingly set with the electromagnetic actuation mechanism, and the other end cooperates with the button mechanism. When the electromagnetic actuation mechanism is energized, it drives the linkage rod to slide, thereby driving the button mechanism to move and close the circuit.

[0016] The circuit breaker of the present invention uses the same electromagnetic actuation mechanism to drive the button mechanism for opening and closing, which not only makes the structure compact and reduces costs, but also has high reliability and long service life. At the same time, the electromagnetic actuation mechanism operates quickly and can drive the circuit breaker to open and close quickly.

[0017] Furthermore, the electromagnetic actuation mechanism drives the button mechanism through the linkage rod, which does not affect the existing manual opening and closing actions. Unlike the existing automatic opening and closing schemes with motor and gear mechanisms, it does not require corresponding design to avoid the automatic opening and closing device from affecting the manual opening and closing operations. The structure is simple and reliable. Attached Figure Description

[0018] Figure 1-2 This is a schematic diagram of the internal layout of the circuit breaker in the first embodiment of the present invention in the open state;

[0019] Figure 3 This is a schematic diagram of the internal layout of the circuit breaker in the closed state according to the first embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of another embodiment of the circuit breaker button mechanism of the present invention;

[0021] Figure 5-6 This is a schematic diagram of the internal layout of another embodiment of the circuit breaker of the present invention;

[0022] Figure 7 yes Figure 5 A schematic diagram of the tripped state of part A in the embodiment;

[0023] Figure 8 yes Figure 5 A schematic diagram of the closed state of part A in the embodiment;

[0024] Figure 9 yes Figure 5 The motion trajectory diagram of the drive end of the linkage lever during the opening and closing of the circuit breaker;

[0025] Figure 10-11 This is a schematic diagram of the internal layout of another embodiment of the circuit breaker of the present invention. Detailed Implementation

[0026] The specific embodiments of the circuit breaker of the present invention are further described below with reference to the accompanying drawings. The circuit breaker of the present invention is not limited to the descriptions of the following embodiments.

[0027] A circuit breaker includes a circuit breaker housing 3, a button mechanism 1, and a lever mechanism 6. The button mechanism 1 is manually operated, and the button mechanism 1 drives the circuit breaker to open or close via the lever mechanism 6. An electromagnetic actuation mechanism 2 cooperates with the button mechanism 1 or the lever mechanism 6 to drive the circuit breaker to close. When the electromagnetic actuation mechanism 2 receives a closing command, it triggers and drives the button mechanism 1, causing the button mechanism 1 to slide and drive the circuit breaker to close via the lever mechanism 6, thereby realizing remote control of the circuit breaker to automatically close.

[0028] The circuit breaker of this invention uses an electromagnetic actuation mechanism 2 to drive a button mechanism 1 or a lever mechanism 6 for closing, which has high reliability and long service life. It effectively solves the problems of gear wear or damage or misalignment between gears in existing motor and gear closing devices, resulting in short service life. Moreover, the electromagnetic actuation mechanism 2 operates quickly and can drive the circuit breaker to close rapidly. In particular, it is preferable that the electromagnetic actuation mechanism 2 drives the button mechanism 1 for closing, and the electromagnetic actuation mechanism 2 is suitable for cooperating with the linearly moving button mechanism 1.

[0029] As a preferred embodiment of the present invention, the circuit breaker further includes a trip unit 7. The trip unit 7 triggers the lever mechanism 6 to trip, causing the circuit breaker to open, thus achieving remote control of the circuit breaker's automatic opening and closing. The automatic opening and closing of the circuit breaker is achieved through the cooperation of the electromagnetic actuation mechanism 2 and the button mechanism 1, as well as the cooperation of the trip unit 7 and the lever mechanism 6.

[0030] As another technical solution of the present invention, preferably, the electromagnetic actuation mechanism 2 cooperates with the button mechanism 1 to drive the circuit breaker to open and close. When the circuit breaker is in the open state, the electromagnetic actuation mechanism 2 triggers and drives the button mechanism 1 upon receiving a closing command, causing the button mechanism 1 to slide and drive the circuit breaker to close via the lever mechanism 6; simultaneously, when the circuit breaker is in the closed state, the electromagnetic actuation mechanism 2 triggers and drives the button mechanism 1 upon receiving a opening command, causing the button mechanism 1 to slide and drive the circuit breaker to open via the lever mechanism 6. This solution uses the same electromagnetic actuation mechanism 2 to drive the button mechanism 1 for opening and closing, which not only makes the structure compact and reduces costs, but also provides high reliability and a long service life. Furthermore, the electromagnetic actuation mechanism 2 operates quickly, enabling the circuit breaker to open and close rapidly. Figure 1-3 As shown, in the first embodiment of the circuit breaker of the present invention, the circuit breaker includes a circuit breaker housing 3, a button mechanism 1, an electromagnetic actuation mechanism 2, a lever mechanism 6, a moving contact 10, a stationary contact 11, an arc extinguishing device 9, and a trip unit 7. The button mechanism 1 is connected to the lever mechanism 6, and the lever mechanism 6 is connected to the moving contact 10. The stationary contact 11 is disposed inside the circuit breaker housing 3 and corresponds to the moving contact 10. Pressing and pulling the button mechanism 1 drives the circuit breaker to close and open respectively through the lever mechanism 6. When the electromagnetic actuation mechanism 2 receives a closing command, it triggers and drives the button mechanism 1, causing the button mechanism 1 to slide and drive the circuit breaker to close through the lever mechanism 6, thereby realizing remote control of the circuit breaker to automatically close. When the trip unit 7 receives an opening command, it actuates to trigger the lever mechanism 6 to trip, causing the circuit breaker to open, thereby realizing remote control of the circuit breaker to automatically open.

[0031] Preferably, the electromagnetic actuation mechanism 2 and the trip unit 7 can receive closing and opening signals from a host computer, such as a smart terminal, energy meter, or switch cabinet, via signal terminals 5 located on the circuit breaker housing 3. Alternatively, the electromagnetic actuation mechanism 2 and the trip unit 7 can also receive closing and opening signals from a microcontroller inside the circuit breaker.

[0032] Preferably, the circuit breaker further includes an overload trip unit 8. The lever mechanism 6 includes a latching latch 64 and a locking latch 65. The overload trip unit 8 includes a bimetallic strip. When overloaded, the bimetallic strip bends and drives the locking latch 65 on the lever mechanism 6, causing the lever mechanism 6 to trip and thus tripping the circuit breaker. When the circuit breaker fails, the trip unit 7 automatically triggers the locking latch 65 of the lever mechanism 6, tripping the lever mechanism 6 and thus tripping the circuit breaker. The trip unit 7 can be an electromagnetic short-circuit trip unit, an overload trip unit, or a leakage current trip unit, etc., which automatically actuates and drives the locking latch 65 of the lever mechanism 6 when a short circuit, overload, or leakage current occurs in the circuit breaker. For example, if the trip unit 7 is a hydraulic damping trip unit, it can simultaneously provide short-circuit protection and overload protection. The trip unit 7 can be controlled by a microcontroller to trip and provide protection when undervoltage or overvoltage is detected. Figure 2 As shown, in a preferred embodiment, the trip unit 7 includes a shunt trip unit 72 located at the front end and a short-circuit protection trip unit 73 located at the rear end. The shunt trip unit 72 can accept a control signal to trigger the lever mechanism 6 to trip, and the short-circuit protection mechanism 73 can trigger the lever mechanism 6 to trip when a short-circuit fault occurs in the line. The shunt trip unit 72 and the short-circuit protection trip unit 73 are an integral structure.

[0033] like Figure 2 As shown, the electromagnetic actuation mechanism 2 includes an electromagnetic body with a coil 22 and a linkage rod 21. The electromagnetic body drives the button mechanism 1 to trip the circuit breaker via the linkage rod 21. Figure 2 The electromagnetic actuation mechanism 2 shown is used in conjunction with the button mechanism 1 in one embodiment. The electromagnetic actuation mechanism 2 includes an electromagnetic body 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 includes a button 101 with a button slot 102. The button 101 is driven and connected to the lever mechanism 6 through a first connecting rod 106. One end of the linkage rod 21 is connected to the electromagnetic actuation mechanism 2 or the circuit breaker housing 3 and can swing around that end (or be configured as a direct-acting type). The other end of the linkage rod 21 is installed in the button slot 102 of the button 101.

[0034] like Figure 2 As shown, when the circuit breaker is in the open state and automatically closes, the coil 22 of the electromagnetic actuator 2 is energized, and the linkage rod 21 is attracted by the magnetic field of the coil, causing the button 101 to move into the circuit breaker. When the button 101 moves, it drives the rotating part 61 to rotate clockwise through the first connecting rod 106, causing the moving contact 10 to contact the stationary contact 11 and close the circuit, thus achieving automatic closing. When the coil of the electromagnetic actuator 2 is de-energized, the linkage rod 21 is reset by the linkage rod reset spring. Of course, the linkage rod reset spring can also be omitted. At this time, the circuit breaker is in the open state. Figure 3 The circuit breaker is shown in the closed state.

[0035] like Figure 3 As shown, when the circuit breaker is in the closed state and automatically trips, the trip unit 7 is energized, and the push rod 71 inside the trip unit 7 moves to push the latch 65 of the lever mechanism 6 to rotate counterclockwise, releasing the latch connection between the latch 65 and the trip latch 63. The lever mechanism 6 trips to realize the circuit breaker tripping, and the button spring drives the button 101 to reset.

[0036] like Figure 2 As shown, when the circuit breaker is in the open state, to manually close it, the button 101 is pressed and moved into the circuit breaker. When the button 101 moves, it drives the rotating part 61 to rotate clockwise through the first connecting rod 106, which in turn drives the linkage mechanism 6 to make the moving contact 10 contact the stationary contact 11 to close the circuit, thus achieving 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. Figure 3 The circuit breaker is shown in the closed state.

[0037] like Figure 3 As shown, when the circuit breaker is in the closed state, to manually open it, the button 101 is manually pulled outwards from the circuit breaker. When the button 101 moves, it drives the rotating component 61 to rotate counterclockwise via the first connecting rod 106, causing the linkage mechanism 6 to separate the moving contact 10 from the stationary contact 11, thus achieving manual opening. Simultaneously, the button 101 also drives the linkage rod 21 to rotate to a position relatively far from the electromagnetic body. At this time, the circuit breaker is in the closed state. Figure 3 The circuit breaker is shown in the closed state.

[0038] Another improvement of the electromagnetic actuation mechanism 2 using this solution is that it eliminates the need to consider how to avoid the influence of the automatic opening and closing device on manual opening and closing operations, unlike existing automatic opening and closing schemes using motor and gear mechanisms. Existing automatic opening and closing schemes using motor and gear mechanisms require setting microswitches, contacts, or sensors to monitor the closing position, opening position, and / or initial position of the motor or gear; they require the gear to stop or reverse after rotating to the corresponding position; and they require corresponding avoidance mechanisms on the gear mechanism or push-button mechanism so that after the motor and gear mechanism has driven the circuit breaker to close or open, the push-button mechanism can still be manually driven to perform opening or closing operations. The electromagnetic actuation mechanism 2 in this solution does not require any special design. The electromagnetic actuation mechanism 2 has only two states: the linkage rod 21 is engaged and disengaged. When the linkage rod 21 is engaged, the button 101 is driven to close the circuit. Then, the coil 22 of the electromagnetic actuation mechanism 2 is de-energized and the linkage rod 21 is no longer engaged. The button 101 can be manually pulled, which will cause the linkage rod 21 to swing and reset. At the same time, the first connecting rod 106 drives the rotating part 61 to rotate counterclockwise to manually open the circuit. The button 101 can also be pressed again to manually close the circuit. The structure is simple and the two states do not affect each other.

[0039] In another embodiment, the electromagnetic actuation mechanism 2 can also drive the linkage rod 21 by means of a push rod. The linkage rod 21 can be a non-magnetic plastic part. The linkage rod 21 is rotatably installed in the circuit breaker housing 3, with one end corresponding to the push rod of the electromagnetic actuation mechanism 2 and the other end corresponding to the button mechanism 1. When the electromagnetic actuation mechanism 2 is energized, it strikes one end of the linkage rod 21 through the push rod, causing the other end of the linkage rod 21 to drive the button mechanism 1 to move and perform the closing operation.

[0040] In 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 correspondingly arranged with the electromagnetic actuation mechanism 2, and the other end cooperates with the button mechanism 1. When the electromagnetic actuation mechanism 2 is energized, it drives the linkage rod 21 to slide, thereby driving the button mechanism 1 to move and close the circuit. When the electromagnetic actuation mechanism 2 is energized, it attracts the linkage rod 21 to slide, and the hook on the linkage rod 21 pulls the button mechanism 1 to close the circuit; or, when the electromagnetic actuation mechanism 2 is energized, it strikes the linkage rod 21 to slide, and the linkage rod 21 pushes the button mechanism 1 to close the circuit. After the electromagnetic actuation mechanism 2 is de-energized, the linkage rod 21 is reset by the linkage rod spring, or it is reset by the button mechanism 1 when the circuit is opened again.

[0041] As another inferior embodiment, two electromagnetic actuation mechanisms 2 can be set, one for driving the button mechanism 1 to perform the closing operation and the other for driving the button mechanism 1 to perform the opening operation, without triggering the opening through the trip unit 7. However, this method uses too many mechanisms, resulting in a larger circuit breaker size and higher cost.

[0042] As another embodiment, such as Figure 4As shown, the button mechanism 1 includes a button 101, a button connecting rod 103, a button transmission rod 104, and a first connecting rod 106 connected in sequence. A button protrusion 105 that cooperates with the linkage rod 21 is provided on the button 101, the button connecting rod 103, or the button transmission rod 104. In this embodiment, the button protrusion 105 is set on the button transmission rod 104. 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. When 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, the circuit breaker performs opening and closing operations. The button 101, the button connecting rod 103, and the button transmission rod 104 replace the relatively long button 101, and make it easier for the button 101, the button connecting rod 103, or the button transmission rod 104 to cooperate with the insertion-type locking mechanism. The linkage rod 21 is rotatably mounted inside the circuit breaker housing 3, with one end corresponding to the electromagnetic actuation mechanism 2 and the other end corresponding to the button protrusion 105. When the electromagnetic actuation mechanism 2 is energized, it triggers the linkage rod 21 to rotate. The linkage rod 21 drives the button transmission rod 104 to slide through the button protrusion 105, which in turn drives the rotating component 61 to rotate counterclockwise via the first connecting rod 106, thus closing the circuit breaker. At the same time, it also causes the button 101 to slide to... Figure 3 The indicated closing position enables automatic closing.

[0043] It should be noted that the button mechanism 1 can also be configured to open when pressed and close when pulled. The electromagnetic actuation mechanism 2 can also be rotatably configured, with the engaging end of the electromagnetic body of the electromagnetic actuation mechanism 2 facing the lever mechanism. The linkage rod 21 can be rotatably mounted or directly mounted. Corresponding limiting ribs or limiting grooves can also be provided in the circuit breaker housing 3 to guide and limit the rotation or sliding range of the linkage rod 21. The button mechanism 1 can be provided with a button groove 102, or with other mating structures such as a button protrusion that cooperates with the linkage rod 21, all of which fall within the protection scope of this invention.

[0044] like Figure 3 As shown, the button mechanism 1 includes a button 101 with a button slot 102. The button 101 is driven to the lever mechanism 6 via a first connecting rod 106. A button spring is connected to the button 101 and drives it to move outward from the circuit breaker housing 3. The lever mechanism of the present invention is a four / five-bar linkage structure, as shown... Figure 3As shown, one embodiment of the lever mechanism 6 of the present invention includes a rotating member 61, a second connecting rod 62, a jump buckle 63, a locking buckle 65, and a main lever 64. The rotating member 61 and the main lever 64 are rotatably mounted inside the circuit breaker housing 3. The jump buckle 63 and the locking buckle 65 are respectively rotatably mounted on the main lever 64 and are connected by a latch. The rotating member 61 is driven to the jump buckle 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. The locking spring is connected to the locking buckle 65 to provide a restoring force for the locking buckle 65 to rotate in the direction of latching with the jump buckle 63. Of course, the lever mechanism 6 can also adopt other four / five-bar linkage structures.

[0045] Preferred, such as Figure 1 As shown, the circuit breaker in this embodiment is a plug-in type circuit breaker. The push button mechanism 1 and the first terminal 12 are located at one end of the circuit breaker, and the second terminal 4 and the signal terminal 5 are located at the other end of the circuit breaker. The lever mechanism 6 is located in the middle of the circuit breaker. The electromagnetic actuation mechanism 2 and the first terminal 12 are located on the same side of the push button mechanism 1, and the electromagnetic actuation mechanism 2 is located between the lever mechanism 6 and the first terminal 12. 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. The overload trip unit 8 is arranged side by side with the lever mechanism 6 and located between the electromagnetic actuation mechanism 2 and the arc extinguishing device 9. The circuit breaker in this embodiment has a reasonable internal layout design and a compact layout between the components, which can effectively reduce the overall size of the circuit breaker and conform to the trend of circuit breaker miniaturization.

[0046] As another technical solution of the present invention, the electromagnetic actuation mechanism 2 cooperates with the lever mechanism 6 to drive the circuit breaker to close. For example, the electromagnetic actuation mechanism 2 drives the rotating member 61 to rotate in the closing direction to achieve closing. In one embodiment, the rotating member 61 is provided with a closing drive arm protruding from it. When the electromagnetic actuation mechanism 2 receives a closing command, it triggers the push or pull to drive the closing drive arm, causing the rotating member 61 to rotate in the closing direction to achieve closing. In another embodiment, the electromagnetic actuation mechanism 2 drives the rotating member 61 to close the circuit breaker through a linkage rod 21. The linkage rod 21 is rotatably mounted on the electromagnetic actuation mechanism 2 or the circuit breaker housing 3. When the electromagnetic actuation mechanism 2 receives a closing command, it pushes or pulls the linkage rod 21, causing the linkage rod 21 to drive the rotating member 61 to rotate in the opening direction to achieve opening.

[0047] like Figure 5-6As shown, another embodiment of the circuit breaker of the present invention has the same overall structure and function as the first embodiment, including a circuit breaker housing 3, a push-button mechanism 1, an electromagnetic actuation mechanism 2, a lever mechanism 6, a moving contact 10, a stationary contact 11, an arc extinguishing device 9, a trip unit 7, a first terminal block 12, a second terminal block 4, and a signal terminal block 5. The difference between this embodiment and the first embodiment is that the same electromagnetic actuation mechanism 2 cooperates with the push-button mechanism 1 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. The button mechanism 1 drives the circuit breaker to close through the lever mechanism 6. Alternatively, when the coil 22 of the electromagnetic actuation mechanism 2 is energized, the linkage rod 21 is attracted by the magnetic field of the coil, which drives the button mechanism 1 to move into the circuit breaker and drives the circuit breaker to close. Then the electromagnetic actuation mechanism 2 is de-energized.

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

[0050] like Figure 5-6 As shown, the lever mechanism 6 includes a linkage lever 14 connected to 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 mounted on the button mechanism 1, and the other end, the drive end 141, is set in the guide groove 31. When the circuit breaker is in the open state, pressing the button mechanism 1 drives the button mechanism 1 to move into the circuit breaker housing 3, and the button mechanism 1 drives the circuit breaker to close. At the same time, the drive end 141 of the linkage lever 14 moves to a position engaged with the latch 65 of the lever mechanism 6 under the guidance of the guide groove 31. When the circuit breaker is in the closed state, pressing the button mechanism 1 again drives the drive end 141 of the linkage lever 14 to rotate the latch 65, causing the latch 65 to disengage from the trip latch 63, thus disengaging the lever mechanism 6 and realizing the circuit breaker opening. The drive end 141 of the linkage lever 14 returns to its initial position.

[0051] like Figure 7-9As shown, the inner 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 button mechanism 1 drives the driving end 141 of the linkage lever 14 to slide from one side of the guide boss 311 to the position that engages with the latch 65. After the button mechanism 1 is pressed again, the linkage lever 14 triggers the lever mechanism 6 to trip and realize the circuit breaker tripping, the button spring drives the button 101 to reset, and at the same time drives the driving end 141 of the linkage lever 14 to reset from the other side of the guide boss 311. 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, such as Figure 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 an annular guide groove 31 surrounding the guide boss 311. The first guide groove 310 extends outward 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 are opposite to the guide side surface 316 on one side of the guide boss 311. When the button mechanism 1 drives the circuit breaker to close, the driving end 141 of the drive linkage lever 14 drives 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 to form an annular guide groove 31 around the guide boss 311. 312 enters the third guide groove 313. After the circuit breaker is closed, the button mechanism 1 is slightly reset under the drive of the button spring (the part that was pressed too much during closing, or the overtravel part of the moving and stationary contacts is reset). The button mechanism 1 drives the drive end 141 of the linkage lever 14 to enter the fourth guide groove 314 under the guidance of the guide side 316, and is set opposite to the latch 65. Press the button mechanism 1 again, and the button mechanism 1 drives the drive end 141 of the linkage lever 14 to move away from the fifth guide groove 315, triggering the lever mechanism 6 to trip and realize the opening. Then the button mechanism 1 is reset under the drive of the button spring, driving the drive end 141 of the linkage lever 14 from the fourth guide groove 314 and the fifth guide groove 315 back to the initial position of the first guide groove 310.

[0053] Preferably, the second guide groove 312 is an inclined ramp. The highest edge of the ramp of the second guide groove 312 is connected to the guide side surface 316 of the boss 311 and communicates 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. Furthermore, the groove surface of the fourth guide groove 314 is lower than that of the third guide groove 313, and the fifth guide groove 315 is a guide ramp. The highest edge surface of the guide ramp of the fifth guide groove 315 is connected to the first guide groove 310. The connection surface between the fifth guide groove 315 and the first guide groove 310 is higher than that of the first guide groove 310, so that when the circuit breaker is tripped, it cannot return from the fourth guide groove 314 to the third guide groove 313, but instead resets to the first guide groove 310 along the fifth guide groove 315.

[0054] Of course, other existing technical solutions can also be used to enable the linkage lever 14 to move to the position that engages with the latch 65 of the lever mechanism 6 when the circuit breaker is closed, so that the lever mechanism 6 can be disengaged by the linkage lever 14 when the button mechanism 1 is pressed again, and the linkage lever 14 returns to its initial position.

[0055] In this embodiment, the structure of the lever mechanism 6 is the same as in Embodiment 1, and will not be described again. The latch 65 is rotatably mounted and has a latch arm that engages with the jump latch 63, a first drive arm and a second drive arm that engage with the trip unit 7 and the overload trip unit 8 respectively, and a third drive arm that engages with the linkage lever 14. Of course, the linkage lever 14 can also share a drive arm with the trip unit 7 and the overload trip unit 8. Of course, if necessary, the trip unit 7 or the overload trip unit 8 can be omitted, and other protective trip units can be used.

[0056] In this embodiment, when the circuit breaker is in the open state and automatically closes, the electromagnetic actuation mechanism 2 is energized, and the linkage rod 21 is attracted by electromagnetic force, driving the button mechanism 1 to move to the right to close. The button mechanism 1 drives the driving end 141 of the linkage lever 14 into the third guide groove 313. At the same time, the button mechanism 1 drives the rotating part 61 to rotate clockwise through the first connecting rod 106, driving the linkage mechanism 6 to make the moving contact 10 contact the stationary contact 11 to close the circuit, thus realizing automatic closing. After the electromagnetic actuation mechanism 2 is de-energized, the linkage rod 21 returns to the initial position under the spring force. Under the drive of the button spring, the button mechanism 1 resets to the left by a small stroke and drives the driving end 141 of the linkage lever 14 into the fourth guide groove 314 under the guidance of the guide side 316, and is set opposite to the latch 65.

[0057] In the current closed state, when the circuit breaker automatically trips, the electromagnetic actuator 2 is energized again, the linkage rod 21 is attracted to the coil 22 side, driving the button mechanism 1 to move to the right, and the linkage lever 14 slides in the area of ​​the fourth guide groove 314 in the direction of the arrow. At this time, the drive end 141 pushes against the latch 65, causing the trip latch 63 to disengage from the latch 65, and the lever mechanism 6 disintegrates to realize the circuit breaker tripping. After the coil is de-energized, under the action of the button spring, the button mechanism 1 resets to the left and drives the linkage lever 14 to slide in the direction of the arrow through the fifth guide groove 315 to reset in the first guide groove 310.

[0058] As another technical solution of the present invention, the electromagnetic actuation mechanism 2 cooperates with the lever mechanism 6 to drive the circuit breaker to open and close. For example, when the electromagnetic actuation mechanism 2 receives a closing command, it drives the rotating part 61 to rotate to achieve 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 a position that engages with the latch 65 of the lever mechanism 6. When the electromagnetic actuation mechanism 2 receives a closing command again, it pushes the lever mechanism 6 to rotate in the same direction as when closing, driving the button mechanism 1 to move into the circuit breaker housing 3, and the linkage lever 14 drives the latch 65 to achieve tripping and opening. The electromagnetic actuation mechanism 2 can directly cooperate with the closing drive arm of the rotating part 61, or cooperate with the rotating part 61 through the linkage rod 21.

[0059] It should be noted that, similar to the first embodiment, the electromagnetic actuation mechanism 2 can also drive the linkage rod 21 using a push rod, and the button mechanism 1 can use a similar method. Figure 4 Other solutions, etc., are all within the protection scope of this invention.

[0060] like Figure 9-10 As shown, the third embodiment of the present invention is... Figure 5-9 The embodiments are basically the same in structure, except that one end of the linkage lever 14 is connected to the electromagnetic actuation mechanism 2, but not to 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 mounted on the linkage rod 21, and the other end, the drive end 141, is set in the guide groove 31.

[0061] The electromagnetic actuation mechanism 2 drives the button mechanism 1 via a linkage rod 21. One end of the linkage rod 21 is correspondingly set with the electromagnetic actuation mechanism 2, and the other end is linked with the button mechanism 1. Figure 9As shown, the button mechanism 1 has a button slot. One end of the linkage rod 21 is rotatably mounted on the circuit breaker housing 3 or the electromagnetic actuation mechanism 2, and the other end extends into the button slot and is linked with the button mechanism 1. The electromagnetic actuation mechanism 2 attracts or strikes the linkage rod 21 to drive the button mechanism 1. When the button mechanism 1 is pressed, the button mechanism 1 also drives the linkage rod 21 to move. When the circuit breaker is in the open state, the electromagnetic actuation mechanism 2 drives the linkage rod 21 to move, and the linkage rod 21 drives the button mechanism 1 to move into the circuit breaker to close the circuit breaker, realizing automatic closing. Alternatively, pressing the button mechanism 1 to move into the circuit breaker causes the circuit breaker to close manually, and at the same time, the button mechanism 1 drives the linkage rod 21. That is, the electromagnetic actuation mechanism 2 drives the linkage rod 21, or the button mechanism 1 drives the linkage rod 21. The linkage rod 21 drives the linkage lever 14, causing the driving end 141 to move under the guidance of the guide groove 31 to a position that engages with the latch 65 of the lever mechanism 6. When the circuit breaker is in the closed state, the electromagnetic actuation mechanism 2 drives the linkage rod 21 to move the button mechanism 1 into the circuit breaker, or the button mechanism 1 is pressed to move into the circuit breaker, driving the linkage rod 21. The linkage rod 21 drives the linkage lever 14, and the driving end 141 drives the latch 65 to disengage the lever mechanism 6 and realize the circuit breaker opening. The driving end 141 of the linkage lever 14 returns to the initial position.

[0062] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A circuit breaker, comprising a push-button mechanism (1) and a lever mechanism (6), wherein the push-button mechanism (1) is connected to the lever mechanism (6), and the push-button mechanism (1) drives the circuit breaker to open and close via the lever mechanism (6), characterized in that: It also includes an electromagnetic actuation mechanism (2) that works with the button mechanism (1) to drive the circuit breaker to close and open. When the circuit breaker is in the open state, the electromagnetic actuation mechanism (2) drives the button mechanism (1) to move into the circuit breaker through the linkage rod (21) to achieve closing; and when the circuit breaker is in the closed state, the electromagnetic actuation mechanism (2) drives the button mechanism (1) to move into the circuit breaker through the linkage rod (21) to achieve opening. The button mechanism (1) and the first terminal (12) are located at one end of the circuit breaker, the second terminal (4) and the signal terminal (5) are located at the other end of the circuit breaker, the lever mechanism (6) is located in the middle of the circuit breaker, the electromagnetic actuation mechanism (2) and the first terminal (12) are located on the same side of the button mechanism (1), and the electromagnetic actuation mechanism (2) is located between the lever mechanism (6) and the first terminal (12), 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), the overload trip unit (8) is arranged side by side with the lever mechanism (6) and located between the electromagnetic actuation mechanism (2) and the arc extinguishing device (9).

2. The circuit breaker according to claim 1, characterized in that: The linkage rod (21) is made of a material that can be magnetically attracted. The button mechanism (1) includes a button (101) with a button slot (102). One end of the linkage rod (21) is connected to the electromagnetic actuation mechanism (2) or the circuit breaker housing (3), and the other end of the linkage rod (21) is installed in the button slot (102) of the button (101).

3. The circuit breaker according to claim 1, characterized in that: The linkage rod (21) is rotatably installed inside the circuit breaker housing (3). One end is set in correspondence with the electromagnetic actuation mechanism (2), and the other end is set in correspondence with the button mechanism (1). When the electromagnetic actuation mechanism (2) is energized, it drives the button mechanism (1) to move by attracting or pushing the linkage rod (21) to perform the closing operation.

4. The circuit breaker according to claim 1, characterized in that: When the circuit breaker is in the open state, press the button mechanism (1), and the button mechanism (1) will drive the circuit breaker to close through the lever mechanism (6). When the circuit breaker is in the closed state, press the button mechanism (1), and the button mechanism (1) will drive the circuit breaker to open through the lever mechanism (6).

5. The circuit breaker according to claim 1, characterized in that: The circuit breaker includes a linkage lever (14) connected to 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 mounted on the button mechanism (1), and the other end is the drive end (141) set in the guide groove (31). When the circuit breaker is in the open state, the button mechanism (1) moves into the circuit breaker to drive the circuit breaker to close. At the same time, the drive end (141) of the linkage lever (14) moves under the guidance of the guide groove (31) to a position that cooperates with the latch (65) of the lever mechanism (6). When the circuit breaker is in the closed state, the button mechanism (1) moves into the circuit breaker. The drive end (141) of the linkage lever (14) drives the latch (65) to disengage the lever mechanism (6) and realize the circuit breaker opening. The drive end (141) of the linkage lever (14) returns to the initial position.

6. The circuit breaker according to claim 1, characterized in that: The circuit breaker includes a linkage lever (14) connected to an electromagnetic actuation mechanism (2). A guide groove (31) is provided inside the circuit breaker housing (3). One end of the linkage lever (14) is rotatably mounted on a linkage rod (21), and the other end is a drive end (141) located in the guide groove (31). One end of the linkage rod (21) is correspondingly set with the electromagnetic actuation mechanism (2), and the other end is linked with the button mechanism (1). When the circuit breaker is in the open state, the electromagnetic actuation mechanism (2) drives the linkage rod (21) to move the button mechanism (1) into the circuit breaker to close the circuit breaker, or pressing the button mechanism (1) moves it into the circuit breaker to close the circuit breaker and simultaneously drive the linkage lever (14) to close the circuit breaker. The moving rod (21) drives the linkage lever (14) to move the driving end (141) to the position where it engages with the latch (65) of the lever mechanism (6) under the guidance of the guide groove (31). When the circuit breaker is in the closed state, the electromagnetic actuation mechanism (2) drives the linkage rod (21) to move the button mechanism (1) into the circuit breaker, or the button mechanism (1) is pressed to move into the circuit breaker and drive the linkage rod (21). The linkage rod (21) drives the linkage lever (14), and the driving end (141) drives the latch (65) to disengage the lever mechanism (6) and realize the circuit breaker tripping. The driving end (141) of the linkage lever (14) returns to the initial position.

7. The circuit breaker according to claim 5 or 6, characterized in that: 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 an annular guide groove (31) around the guide boss (311). The first guide groove (310) extends outward 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 are opposite to the guide side surface (316) on one side of the guide boss (311). When the button mechanism (1) drives the circuit breaker to close, the driving end (1) of the drive linkage lever (14) is driven. 41) After the circuit breaker is closed, the button mechanism (1) is slightly reset under the drive of the button spring, which drives the drive end (141) of the linkage lever (14) to enter the fourth guide groove (314) under the guidance of the guide side (316) and is set opposite to the latch (65). Press the button mechanism (1) again, and the button mechanism (1) drives the drive end (141) of the linkage lever (14) to move away from the fifth guide groove (315) to trigger the lever mechanism (6) to trip and realize the circuit breaker opening. The button mechanism (1) is reset under the drive of the button spring, which drives the drive end (141) of the linkage lever (14) to return from the fourth guide groove (314) and the fifth guide groove (315) to the initial position of the first guide groove (310).

8. The circuit breaker according to claim 1, characterized in that: The lever mechanism (6) includes a rotating component (61), a second connecting rod (62), a jump buckle (63), a locking buckle (65), and a main lever (64). The rotating component (61) and the main lever (64) are rotatably mounted inside the circuit breaker housing (3). The jump buckle (63) and the locking buckle (65) are rotatably mounted on the main lever (64) and are connected by a latch. The rotating component (61) is driven to the jump buckle (63) through the second connecting rod (62) and is connected to the button mechanism (1) through the first connecting rod (106). The main lever (64) is connected to the moving contact (10). The locking buckle spring is connected to the locking buckle (65) to provide a restoring force for the locking buckle (65) to rotate in the direction of the latch connection with the jump buckle (63).

9. The circuit breaker according to claim 1, characterized in that: The button mechanism (1) includes a button (101), a button linkage (103), a button transmission rod (104), and a first linkage (106) connected in sequence. The linkage rod (21) drives the circuit breaker to close via the button (101), the button linkage (103), or the button transmission rod (104).

10. The circuit breaker according to claim 1, characterized in that: The linkage rod (21) is slidably installed inside the circuit breaker housing (3). One end of the linkage rod (21) is correspondingly set with the electromagnetic actuation mechanism (2), and the other end is engaged with the button mechanism (1). When the electromagnetic actuation mechanism (2) is energized, it drives the linkage rod (21) to slide, so that the linkage rod (21) drives the button mechanism (1) to move to close the circuit.

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