Switching control structure of circuit breaker and circuit breaker

Abstract

The utility model provides a kind of opening and closing control structure and circuit breaker of circuit breaker, operating mechanism is locked by locking member and moving shaft locking to realize circuit breaker closing locking, opening electromagnetic iron drive locking member and moving shaft unlock realizes circuit breaker tripping opening, and closing control loop for controlling the on-off of closing coil to realize the closing of circuit breaker is equipped with closing switch, and the on-off of closing switch is driven by push rod spring driven push rod, make push rod and closing switch associated closing state of circuit breaker, realize the current of closing coil after closing success is quickly cut off, the energization time of closing coil is controlled;At the same time, tripping control loop for controlling the on-off of opening coil to realize the tripping opening of circuit breaker is equipped with opening switch, and the on-off of opening switch is driven by shaft mechanism driven push rod, make push rod and opening switch associated tripping opening state of circuit breaker, realize the current of opening coil after tripping opening success is quickly cut off, the energization time of opening coil is controlled.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a circuit breaker opening and closing control structure and a circuit breaker. Background Technology

[0002] Existing reclosing circuit breakers use a motor to drive the operating mechanism to achieve the opening and closing operations, which has a relatively long opening and closing cycle (about 20 seconds) and cannot meet the requirements for rapid opening and closing.

[0003] In view of this, existing technology has introduced an operating mechanism for circuit breakers that uses electromagnets to drive the circuit breaker's opening and closing operations. This structure can complete the opening and closing operation in 100ms. Typically, two electromagnets are used: one for closing and one for opening. Both electromagnets have coils that generate magnetic field excitation. Upon receiving a closing (opening) command, the controller supplies power to the closing (opening) coil, actuating the closing (opening) electromagnet to perform the opening and closing operation. However, since the coil heats up during energization, energy loss occurs, and overheating can burn out the coil. Utility Model Content

[0004] The purpose of this utility model is to overcome at least one defect of the prior art and to provide a circuit breaker opening and closing control structure and a circuit breaker.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The circuit breaker's opening and closing control structure includes a controller, an opening coil, an opening electromagnet, a closing coil, and a closing electromagnet. The controller has an opening control circuit for controlling the energization and de-energization of the opening coil, and a closing control circuit for controlling the energization and de-energization of the closing coil. The opening and closing control structure also includes an opening and closing control system and a first bracket. The opening and closing control system includes an opening switch, a closing switch, a push rod, and a push rod spring for driving the push rod. The opening switch is disposed in the opening control circuit, and the closing switch is disposed in the closing control circuit. The first bracket has a first accommodating space, and the opening and closing control system is installed in the first accommodating space. The push rod of the opening and closing control system has a push rod driven part that extends out of the first bracket.

[0007] When the driven part of the push rod is subjected to force, the push rod can move from the first position to the second position, so that the push rod drives the trip switch to switch from the on state to the off state, and the closing switch to switch from the off state to the on state, and the push rod drives the push rod spring to store energy.

[0008] The push rod spring drives the push rod to move from the second position to the first position, so that the push rod drives the trip switch to switch from the open state to the closed state, and the closing switch to switch from the closed state to the open state.

[0009] Optionally, the first bracket is further provided with a second receiving space, in which the tripping coil and the tripping electromagnet are installed, and a first push rod provided on the tripping electromagnet extends out of the first bracket to trigger the tripping of the operating mechanism.

[0010] Optionally, the first bracket includes a first mounting portion having the first accommodating space and a second mounting portion having the second accommodating space on its bottom side. The first mounting portion is a block structure with its length direction along the height direction of the first bracket, and the second mounting portion is a block structure with its length direction along the length direction of the first bracket. The first mounting portion and the second mounting portion are connected in a T-shape.

[0011] Optionally, the trip switch is provided with a first trigger part, the closing switch is provided with a second trigger part, and the push rod is provided with a first pushing part and a second pushing part. When the push rod is in the first position, the first trigger part is located on the path of the first pushing part moving to the second position. When the push rod moves from the first position to the second position, the first pushing part pushes the first trigger part to drive the trip switch to switch from the on state to the off state.

[0012] When the push rod is in the second position, the second trigger part is located on the path of the second push part moving from the second position to the first position. When the push rod moves from the second position to the first position, the second push part pushes the second trigger part to drive the closing switch to switch from the on state to the off state.

[0013] Optionally, the first pushing part is provided with a first pushing surface and a first limiting surface connected together. The first pushing surface and the first limiting surface are arranged sequentially along the direction in which the push rod moves from the second position to the first position. The first pushing surface is set at an angle to the direction of movement of the push rod, and the first limiting surface is parallel to the direction of movement of the push rod. When the push rod moves from the first position to the second position, the first pushing part first pushes the first trigger part through the first pushing surface to drive the trip switch to switch from the on state to the off state, and then limits the first trigger part through the first limiting surface to keep the trip switch in the off state.

[0014] And / or, the second pushing part is provided with a connected second pushing surface and a second limiting surface. The second pushing surface and the second limiting surface are arranged sequentially along the direction in which the push rod moves from the first position to the second position. The second pushing surface is set at an angle to the direction of movement of the push rod, and the second limiting surface is parallel to the direction of movement of the push rod. When the push rod moves from the second position to the first position, the second pushing part first drives the second trigger part through the second pushing surface to drive the closing switch to switch from the on state to the off state, and then limits the second trigger part through the second limiting surface to keep the closing switch in the off state.

[0015] Optionally, the push rod is provided with a first clearance groove and a first groove. The first clearance groove and the first groove are arranged sequentially along the direction in which the push rod moves from the second position to the first position. A first pushing part protrudes between the first clearance groove and the first groove. When the push rod is in the first position, the first trigger part extends into the first clearance groove.

[0016] And / or, the push rod is provided with a second clearance groove and a second groove, the second clearance groove and the second groove are arranged sequentially along the direction in which the push rod moves from the first position to the second position, a second protruding pushing part is formed between the second clearance groove and the second groove, and when the push rod is in the second position, the second triggering part extends into the second clearance groove.

[0017] Optionally, the push rod and push rod spring of the opening and closing control system are arranged along a first direction, the opening switch and closing switch are arranged side by side along a second direction, and are located on the side of the push rod away from the push rod spring in the first direction, the push rod is slidably arranged along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0018] Optionally, the first bracket includes a first mounting part having the first accommodating space. The first accommodating space includes a first mounting space, a second mounting space, and a third mounting space that are sequentially connected along the width direction of the first bracket. The opening switch and the closing switch are respectively installed in the first mounting space. The second mounting space and the third mounting space pass through the first mounting part along the height direction of the first bracket. The push rod is slidably disposed in the second mounting space, and the push rod spring is installed in the third mounting space.

[0019] A circuit breaker includes a housing, a traction rod installed within the housing, an operating mechanism, and a rotating shaft mechanism. The operating mechanism is connected to the rotating shaft mechanism, which has at least one moving contact. The operating mechanism includes a moving shaft, a locking element, and a return spring. The moving shaft is linearly sliding and can move between an unlocked position and a locked position. The moving shaft is connected to the rotating shaft mechanism via a connecting rod.

[0020] It also includes the opening and closing control structure of the circuit breaker described in any one of the claims.

[0021] The closing electromagnet of the circuit breaker control structure is connected to the moving shaft. When the closing coil is energized, it drives the closing electromagnet to move the moving shaft to the locked position and the return spring stores energy. At the same time, the moving shaft drives the rotating shaft mechanism to rotate to the closing position through the connecting rod, so that the rotating shaft mechanism drives the moving contact to contact the corresponding stationary contact. The locking member locks the moving shaft in the locked position. The rotating shaft mechanism, which rotates to the closing position, avoids the push rod driven part of the push rod of the circuit breaker control structure, so that the push rod spring drives the push rod to move from the second position to the first position.

[0022] When the opening and closing control structure is energized, it drives the opening electromagnet. The opening electromagnet drives the traction rod to release the locking member from the moving shaft. The reset spring drives the moving shaft from the locked position to the unlocked position, so that the moving shaft drives the rotating shaft mechanism to rotate to the opening position through the connecting rod. This causes the rotating shaft mechanism to separate the moving contact from the corresponding stationary contact. The rotating shaft mechanism, which has rotated to the opening position, drives the push rod to move from the first position to the second position by acting on the driven part of the push rod.

[0023] Optionally, the controller is located on one side of the operating mechanism in the first direction, the operating mechanism and the closing coil are arranged along the second direction, the closing electromagnet is arranged inside the closing coil, the opening coil and the opening / closing control system are located on the other side of the operating mechanism in the first direction, the opening electromagnet is arranged inside the opening coil, the traction rod is located on one side of the opening electromagnet in the second direction and is located between the operating mechanism and the closing coil in the second direction, the operating mechanism and the rotating shaft mechanism are arranged along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0024] Optionally, the locking member has a locking surface that engages with the moving shaft, and the locking member has a limiting hole in which the moving shaft is inserted. The limiting hole includes a guide portion and a locking portion, which are connected in the length direction. The width of the guide portion is smaller than the width of the locking portion, so that the locking surface is formed at the point where the locking portion communicates with the guide portion.

[0025] Optionally, the operating mechanism includes a second bracket, an operating member, and a sliding member. The operating member and the locking member are rotatably mounted on the second bracket, and the sliding member and the moving shaft are slidably mounted on the second bracket. The operating member is driven to cooperate with the sliding member, and the sliding member is driven to cooperate with the moving shaft. Rotating the operating member can drive the sliding member to slide along the guide portion until it locks with the locking surface of the locking member.

[0026] Optionally, the second bracket includes two bracket side plates spaced apart and opposite to each other along a first direction, and a positioning plate connected between the top sides of the two bracket side plates. The two bracket side plates are respectively provided with a second sliding groove and a third sliding groove, the length direction of the second sliding groove and the third sliding groove is arranged along the second direction. The two ends of the moving shaft are slidably disposed in the third sliding groove, the two ends of the sliding member are slidably disposed in the second sliding groove, the locking member is rotatably mounted between the two bracket side plates and is hinged to the lower traction rod, the moving shaft passes through the limiting hole on the locking member, the operating member is rotatably disposed on the positioning plate, and the eccentric shaft on the operating member extends into the first sliding groove of the sliding member to drive the sliding member to slide. The sliding member has a downwardly protruding sliding member protrusion located on one radial side of the moving shaft for driving the moving shaft to slide.

[0027] This utility model discloses a circuit breaker opening and closing control structure and a circuit breaker. The operating mechanism locks the circuit breaker in place by locking the moving shaft with a locking element. The opening electromagnet drives the locking element to unlock the moving shaft, thus tripping and opening the circuit breaker. Furthermore, the closing control circuit for controlling the energization of the closing coil to close the circuit breaker includes a closing switch. A push rod driven by a spring drives the closing switch to open and close, associating the push rod and the closing switch with the circuit breaker's closing state. This allows for rapid disconnection of the current in the closing coil after successful circuit breaker closing. This effectively controls the energizing time of the closing coil, reducing power loss and preventing the closing coil from overheating and burning out. Simultaneously, the tripping control circuit, used to control the energizing of the tripping coil to achieve circuit breaker tripping, includes a tripping switch. A push rod driven by a rotating shaft mechanism drives the tripping switch to open and close, associating the push rod and the tripping switch with the circuit breaker's tripping status. This allows for rapid disconnection of the tripping coil current after successful circuit breaker tripping, effectively controlling the energizing time of the tripping coil, reducing power loss, and preventing the tripping coil from overheating and burning out.

[0028] In addition, the push rod uses an inclined first pushing surface to push the trip switch to open, and a flat first limiting surface to limit the trip switch in the open state. The structure is simple, the push rod can quickly and reliably push the trip switch, and stably and reliably limit the trip switch.

[0029] In addition, the push rod uses an inclined second pushing surface to push the closing switch to open, and a flat second limiting surface to limit the closing switch in the open state. The structure is simple, the push rod can quickly and reliably push the closing switch, and stably and reliably limit the closing switch.

[0030] In addition, the opening and closing control system is set on one side of the push rod by a push rod spring, and the opening switch and closing switch are set side by side on the other side of the push rod, making the structure compact and reducing the size.

[0031] Furthermore, by mounting the electromagnetic trip unit on the first bracket of the opening and closing control system, the opening and closing control system and the electromagnetic trip unit are integrated into one unit, which is miniaturized and modularized, facilitates automated assembly, has a compact structure, and reduces size.

[0032] In addition, the guide and locking parts of the circuit breaker's locking components, formed by the limiting holes, cooperate with the traction rod to lock and unlock the moving shaft, resulting in a compact and simple overall structure. Attached Figure Description

[0033] Figure 1 This is a front view of the circuit breaker of this utility model with the top cover removed;

[0034] Figure 2 This is a cross-sectional view of the circuit breaker of this utility model with the top cover removed;

[0035] Figure 3This is a cross-sectional view of the circuit breaker in the closed state, showing the positions of the push rod and the trip switch;

[0036] Figure 4 This is a cross-sectional view of the circuit breaker in the closed state, showing the positions of the push rod and the closing switch;

[0037] Figure 5 This is a cross-sectional view of the circuit breaker in the open state of this utility model, showing the positions of the push rod and the open switch;

[0038] Figure 6 This is a cross-sectional view of the circuit breaker in the open state of this utility model, showing the positions of the push rod and the closing switch;

[0039] Figure 7 This is a perspective view of the opening and closing control system and electromagnetic trip device of this utility model;

[0040] Figure 8 This is a partial cross-sectional view of the opening and closing control system and electromagnetic trip device of this utility model;

[0041] Figure 9 This is a cross-sectional view of the opening and closing control system of this utility model;

[0042] Figure 10 This is a schematic diagram of the push rod of this utility model;

[0043] Figure 11 This is a schematic diagram of the structure of the first support of this utility model;

[0044] Figure 12 This is a schematic diagram of the tripping control circuit of the circuit breaker in the closed state of this utility model;

[0045] Figure 13 This is a schematic diagram of the closing control circuit of the circuit breaker in the closed state of this utility model;

[0046] Figure 14 This is a schematic diagram of the tripping control circuit of the circuit breaker in the tripping state of this utility model;

[0047] Figure 15 This is a schematic diagram of the closing control circuit of the circuit breaker in the open state of this utility model;

[0048] Figure 16 This is a schematic diagram of the structure of the electric operating mechanism, operating mechanism, traction rod and opening / closing control system of this utility model;

[0049] Figure 17 This is a schematic diagram of the closing electromagnet, second push rod, traction rod, and operating mechanism of this utility model without the second bracket.

[0050] Figure 18This is a structural schematic diagram of the traction rod, locking component, and moving shaft of this utility model.

[0051] Controller 100; tripping power supply 110; closing power supply 120; electromagnetic trip unit 200; tripping coil 210; tripping electromagnet 220; first push rod 230; electric operating mechanism 300; closing coil 310; closing electromagnet 320; second push rod 330; push rod body 331; push rod connecting plate 332; tripping and closing control system 400; tripping switch 410; first trigger part 411; first common contact C1; first normally closed contact NC1; first Normally open contact NO1; Closing switch 420; Second trigger part 421; Second common contact C2; Second normally closed contact NC2; Second normally open contact NO2; Push rod 430; First pushing part 431; First pushing surface 4311; First limiting surface 4312; Second pushing part 432; Second pushing surface 4321; Second limiting surface 4322; First clearance groove 433; First groove 434; Second clearance groove 435; Second groove 436; Push rod driven Part 437; First limiting part 438; Push rod spring 440; First bracket 450; First mounting space 451; Second mounting space 452; Third mounting space 453; Second receiving space 454; First mounting part 455; Second mounting part 456; Mounting column 457; Second limiting part 458; Rotating shaft mechanism 500; Traction rod 600; Housing 700; Base 710; Middle cover 720; Operating mechanism 800; Second bracket 810; Bracket side Plate 811; Positioning plate 812; Second slide groove 813; Third slide groove 814; Operating element 820; Cam 821; Eccentric shaft 822; Sliding element 830; First slide groove 831; Sliding element protrusion 832; Sliding shaft 833; Moving shaft 840; Locking element 850; Locking surface 851; Locking element rotating shaft 852; Guide part 853; Locking part 854; Connecting rod 860; Indicator 870; Moving contact 910; Stationary contact 920; Arc extinguishing chamber 930. Detailed Implementation

[0052] The following description, in conjunction with the accompanying drawings, further illustrates the opening and closing control structure of the circuit breaker and the specific implementation of the circuit breaker according to this utility model. The opening and closing control structure and circuit breaker of this utility model are not limited to the descriptions in the following embodiments.

[0053] like Figure 1-2As shown, the circuit breaker of this embodiment includes a housing 700, an operating mechanism 800 installed within the housing 700, and a rotating shaft mechanism 500. The housing 700 typically includes a base 710, a middle cover 720, and a top cover (not shown in the figure) connected in sequence. The rotating shaft mechanism 500 is provided with at least one moving contact 910. The circuit breaker of this embodiment also includes a controller 100, an electromagnetic trip unit 200, and an electric operating mechanism 300. The electromagnetic trip unit 200 includes a trip coil 210 and a trip electromagnet 220. The electric operating mechanism 300 includes a closing coil 310 and a closing electromagnet 320. The controller 100 is provided with a trip control circuit for controlling the energization and de-energization of the trip coil 210, and a closing control circuit for controlling the energization and de-energization of the closing coil 310. When the controller 100 controls the trip coil 210 to be energized, it drives the circuit breaker to trip. Electromagnet 220: The tripping electromagnet 220 drives the operating mechanism 800 to trip. After tripping, the operating mechanism 800 drives the rotating shaft mechanism 500 to rotate to the tripping position, causing the rotating shaft mechanism 500 to cause the moving contact 910 to separate from the corresponding stationary contact 920. When the controller 100 controls the closing coil 310 to be energized, it drives the closing electromagnet 320 to drive the operating mechanism 800. The operating mechanism 800 drives the rotating shaft mechanism 500 to rotate to the closing position, causing the rotating shaft mechanism 500 to cause the moving contact 910 to contact the corresponding stationary contact 920.

[0054] refer to Figure 16-18 The operating mechanism 800 includes a moving shaft 840, a locking element 850, and a return spring. The moving shaft 840 is linearly sliding and can move between an unlocked position and a locked position. The moving shaft 840 is connected to the rotating shaft mechanism 500 via a connecting rod 860. A closing electromagnet 320 is connected to the moving shaft 840 to drive the moving shaft 840 to the locked position and to store energy in the return spring. This causes the moving shaft 840 to drive the rotating shaft mechanism 500 to rotate to the closing position via the connecting rod 860, and the locking element 850 locks the moving shaft 840 in the locked position. The opening electromagnet 220 can drive the locking element 850 to release the lock on the moving shaft 840. After the locking element 850 releases the lock on the moving shaft 840, the return spring releases energy and drives the moving shaft 840 from the locked position to the unlocked position, causing the moving shaft 840 to drive the rotating shaft mechanism 500 to rotate to the opening position via the connecting rod 860. The return spring directly or indirectly drives the moving shaft 840.

[0055] A circuit breaker typically includes a multi-pole conductive system and a current transformer (not shown in the figure). Each pole of the multi-pole conductive system includes a contact system and a conductive structure (not shown in the figure). The contact system includes a moving contact 910 and a stationary contact 920. The moving contacts 910 of the multi-pole conductive system are respectively disposed on the rotating shaft mechanism 500, and the stationary contacts 920 are fixedly disposed in the housing 700. One end of the stationary contact 920 is used for wiring, and the other end is disposed opposite to the moving contact 910. An arc-extinguishing chamber 930 may be disposed above the stationary contact 920. One end of the conductive structure is used for wiring, and the other end is electrically connected to the moving contact 910 of the contact system. The conductive structure passes through the current transformer, causing the current transformer to generate an induced current or an induced voltage. The current transformer is electrically connected to the controller 100, and the induced current or induced voltage is transmitted to the controller 100. The controller 100 compares the obtained induced current with a current threshold or the induced voltage with a voltage threshold to determine whether to output a trip signal to the electromagnetic trip unit 200. The controller 100 can send an action signal to the electromagnetic trip unit 200 according to the remote control signal, so that the electromagnetic trip unit 200 triggers the operating mechanism to trip and realize automatic trip control. When the current transformer 100 senses the residual current, it transmits the residual current signal to the controller 100. When the controller 100 determines that there is a leakage fault, it triggers the operating mechanism to trip through the electromagnetic trip unit 200 to realize leakage protection.

[0056] The housing 700 is also provided with a rotatably mounted traction rod 600. Figure 16 The electromagnetic trip unit 200 indirectly releases the locking element 850 from the moving shaft 840 via the traction rod 600, causing the operating mechanism 800 to trip. The circuit breaker can also be equipped with multiple backup protection mechanisms (not shown in the figure) corresponding one-to-one with the multi-pole conductive system. These backup protection mechanisms typically include a fixed magnetic yoke and a rotatable armature. The armature and yoke are arranged opposite each other to form a through cavity, and the conductive structure of each pole conductive system also passes through the through cavity of the corresponding backup protection mechanism.

[0057] The circuit breaker can provide protection against overload, short circuit, leakage current and / or overvoltage. Both the electromagnetic trip unit 200 and the backup protection mechanism have tripping elements. The tripping element of the backup protection mechanism refers to the armature. Under the action of external force, the tripping element drives the traction rod 600, causing the operating mechanism 800 of the circuit breaker to trip during closing. At the same time, the operating mechanism 800 drives the rotating shaft mechanism 500 to separate the moving contact 910 from the stationary contact 920, and the circuit breaker trips and opens. Both the electromagnetic trip unit 200 and the backup protection mechanism are used to drive the movement of the traction rod 600. In terms of execution, the two complement each other and do not interfere with each other.

[0058] like Figure 2 , Figure 7 and Figure 8As shown, the improvement of this application is that it also includes a circuit breaker control system 400 and a first bracket 450. The circuit breaker control system 400, controller 100, circuit breaker coil 210, circuit breaker electromagnet 220, circuit breaker coil 310 and circuit breaker electromagnet 320 form the circuit breaker control structure. The circuit breaker control system 400 includes a circuit breaker switch 410, a circuit breaker switch 420, a push rod 430 and a push rod spring 440 for driving the push rod 430. The circuit breaker switch 410 is set in the circuit breaker control circuit, the circuit breaker switch 420 is set in the circuit breaker control circuit, and the push rod 430 is driven and cooperated with the circuit breaker switch 410 and the circuit breaker switch 420 respectively. The first bracket 450 is provided with a first accommodating space, the circuit breaker control system 400 is installed in the first accommodating space, and the push rod 430 of the circuit breaker control system 400 is provided with a push rod driven part 437 extending out of the first bracket 450. The rotating shaft mechanism 500 is driven and cooperated with the push rod driven part 437.

[0059] like Figure 5-6 As shown, the push rod 430 moves from the first position to the second position under the force of the push rod driven part 437. That is, when the rotating shaft mechanism 500 rotates from the closed position to the open position, the rotating shaft mechanism 500 drives the push rod 430 to move from the first position to the second position by acting on the push rod driven part 437. This causes the push rod 430 to drive the open switch 410 to switch from the on state to the off state, disconnecting the open control circuit to de-energize the open coil 210. The closing switch 420 switches from the off state to the on state, connecting the closing control circuit to connect the closing coil 310. The push rod 430 also drives the push rod spring 440 to store energy.

[0060] like Figure 3-4 As shown, when the rotating shaft mechanism 500 rotates from the open position to the closed position, the push rod spring 440 drives the push rod 430 to move from the second position to the first position, so that the push rod 430 drives the open switch 410 to switch from the open state to the closed state, connects the open control circuit to turn on the open coil 210, and the close switch 420 switches from the closed state to the open state, disconnects the close control circuit to de-energize the close coil 310.

[0061] In this embodiment, the circuit breaker's opening and closing control structure and the circuit breaker itself are described. The circuit breaker's operating mechanism 800 is locked to the moving shaft 840 via a locking element 850, achieving circuit breaker closing lock. The opening electromagnet 220 drives the locking element 850 to unlock from the moving shaft 840, achieving circuit breaker tripping and opening. Furthermore, the closing control circuit for controlling the energization and de-energization of the closing coil 310 to achieve circuit breaker closing includes a closing switch 420. A push rod 430, driven by a push rod spring 440, drives the closing switch 420 to open and close, associating the push rod 430 and the closing switch 420 with the circuit breaker's closing state. This allows for rapid disconnection of the closing coil 310 after successful circuit breaker closing. The 10 current effectively controls the energizing time of the closing coil 310, reducing power loss and preventing the closing coil 310 from overheating and burning out. At the same time, the tripping control circuit, which controls the energizing of the tripping coil 210 to achieve the tripping of the circuit breaker, is equipped with a tripping switch 410. The push rod 430 driven by the rotating shaft mechanism 500 drives the tripping switch 410 to switch on and off, so that the push rod 430 and the tripping switch 410 are associated with the tripping state of the circuit breaker. This enables the current of the tripping coil 210 to be quickly cut off after the circuit breaker trips and is successfully tripped, effectively controlling the energizing time of the tripping coil 210, reducing power loss and preventing the tripping coil 210 from overheating and burning out.

[0062] like Figure 3-6 and Figure 10 As shown, the cooperation structure between the push rod 430 and the opening switch 410 and closing switch 420 in this embodiment is as follows: the opening switch 410 is provided with a first trigger part 411, the closing switch 420 is provided with a second trigger part 421, and the push rod 430 is provided with a first pushing part 431 and a second pushing part 432, as shown. Figure 3 As shown, when the push rod 430 is in the first position, the first trigger part 411 is located on the path of the first push part 431 moving to the second position, as... Figure 5 As shown, when the push rod 430 moves from the first position to the second position, it drives the first trigger part 411 through the first push part 431 to switch the trip switch 410 from the on state to the off state; as Figure 6 As shown, when the push rod 430 is in the second position, the second trigger part 421 is located on the path of the second push part 432 moving from the second position to the first position, as... Figure 4 As shown, when the push rod 430 moves from the second position to the first position, it drives the second triggering part 421 through the second pushing part 432 to drive the closing switch 420 to switch from the on state to the off state.

[0063] Furthermore, the first pushing part 431 is provided with a first pushing surface 4311 and a first limiting surface 4312 connected together. The first pushing surface 4311 and the first limiting surface 4312 are arranged sequentially along the direction in which the push rod 430 moves from the second position to the first position. The first pushing surface 4311 is set at an angle to the moving direction of the push rod 430, and the first limiting surface 4312 is parallel to the moving direction of the push rod 430. Figure 3 and Figure 5 As shown, when the push rod 430 moves from the first position to the second position, the first pushing part 431 first pushes the first trigger part 411 through the first pushing surface 4311 to drive the trip switch 410 from the on state to the off state, and then limits the first trigger part 411 through the first limiting surface 4312 to keep the trip switch 410 in the off state. The push rod 430 uses an inclined first pushing surface 4311 to push the trip switch 410 to open, and uses a planar first limiting surface 4312 to limit the trip switch 410 in the off state. The structure is simple, and the push rod 430 can quickly and reliably push the trip switch 410 and stably and reliably limit the trip switch 410. In this embodiment, the first pushing surface 4311 and the first limiting surface 4312 are planar. Of course, in other embodiments, they can also be curved surfaces or other structures.

[0064] Furthermore, the second pushing part 432 is provided with a connected second pushing surface 4321 and a second limiting surface 4322. The second pushing surface 4321 and the second limiting surface 4322 are arranged sequentially along the direction in which the push rod 430 moves from the first position to the second position. The second pushing surface 4321 is set at an angle to the moving direction of the push rod 430, and the second limiting surface 4322 is parallel to the moving direction of the push rod 430. Figure 4 and Figure 6 As shown, when the push rod 430 moves from the second position to the first position, the second pushing part 432 first pushes the second trigger part 421 through the second pushing surface 4321 to drive the closing switch 420 from the on state to the off state, and then limits the second trigger part 421 through the second limiting surface 4322 to keep the closing switch 420 in the off state. The push rod 430 uses an inclined second pushing surface 4321 to push the closing switch 420 to open, and uses a planar second limiting surface 4322 to limit the closing switch 420 in the off state. The structure is simple, and the push rod 430 can quickly and reliably push the closing switch 420, and stably and reliably limit the closing switch 420. In this embodiment, the second pushing surface 4321 and the second limiting surface 4322 are planar. Of course, in other embodiments, they can also be curved surfaces or other structures.

[0065] Preferably, the push rod 430 has a straight plate structure and is provided with a first clearance groove 433 and a first groove 434. The first clearance groove 433 and the first groove 434 are arranged sequentially along the direction in which the push rod 430 moves from the second position to the first position. A protruding first pushing part 431 is formed between the first clearance groove 433 and the first groove 434, such as... Figure 3 As shown, when the push rod 430 is in the first position, the first trigger part 411 of the trip switch 410 extends into the first clearance groove 433. The push rod 430 has a first pushing part 431 with two grooves forming a protrusion, which is used to cooperate with the trip switch 410, so that the push rod 430 and the trip switch 410 can be compactly arranged.

[0066] Furthermore, the push rod 430 is provided with a second clearance groove 435 and a second groove 436. The second clearance groove 435 and the second groove 436 are arranged sequentially along the direction in which the push rod 430 moves from the first position to the second position. A protruding second pushing part 432 is formed between the second clearance groove 435 and the second groove 436, such as... Figure 6 As shown, when the push rod 430 is in the second position, the second trigger part 421 of the closing switch 420 extends into the second clearance groove 435. The push rod 430 has a second pushing part 432 with two grooves forming a protrusion, which is used to cooperate with the opening switch 410, so that the push rod 430 and the closing switch 420 can be compactly arranged.

[0067] like Figure 7-9 As shown in the diagram, the layout of the circuit breaker control system 400 in this embodiment is as follows: the push rod 430 and push rod spring 440 of the circuit breaker control system 400 are arranged along a first direction, and the opening switch 410 and closing switch 420 are arranged side by side along a second direction, with the opening switch 410 located on the side of the push rod 430 away from the push rod spring 440 in the first direction. The push rod 430 is slidably arranged along a third direction, and the first direction, second direction, and third direction are perpendicular to each other. The first direction is the X direction in the diagram, the second direction is the Y direction, and the third direction is the Z direction. The circuit breaker control system 400 is compact and reduces size by having the push rod spring 440 located on one side of the push rod 430 and the opening switch 410 and closing switch 420 arranged side by side on the other side of the push rod 430.

[0068] like Figure 7-9 and Figure 11As shown, the circuit breaker control system 400 and the electromagnetic trip unit 200 in this embodiment are modularly designed. The first bracket 450 in this embodiment is also provided with a second receiving space 454. The trip coil 210 and the trip electromagnet 220 are installed in the second receiving space 454, and the first push rod 230 provided on the trip electromagnet 220 extends out of the first bracket 450 to trigger the tripping of the operating mechanism 800. The tripping component of the electromagnetic trip unit 200 refers to the first push rod 230. Preferably, the direction in which the push rod driven part 437 extends out of the first bracket 450 is perpendicular to the direction in which the first push rod 230 extends out of the first bracket 450. By assembling the electromagnetic trip unit 200 on the first bracket 450 of the circuit breaker control system 400, the circuit breaker control system 400 and the electromagnetic trip unit 200 are integrated into one unit, resulting in a miniaturized and modular design that facilitates automated assembly, has a compact structure, and reduces size.

[0069] It should be noted that the electromagnetic trip unit 200 typically also includes a first coil frame and a tripping stationary iron core. The tripping coil 210 is wound around the outside of the first coil frame, and the tripping stationary iron core is fixed inside the first coil frame. The tripping electromagnet 220 is slidably disposed inside the first coil frame and is disposed opposite to the tripping stationary iron core. One end of the first push rod 230 is fixedly connected to the tripping electromagnet 220, and the other end passes through the tripping stationary iron core and extends out of the first coil frame. When the tripping coil 210 is energized, the tripping electromagnet 220 slides towards the tripping stationary iron core under the electromagnetic force driven by the tripping coil 210. This is prior art in the field and will not be described in detail here.

[0070] Specifically, the first bracket 450 includes a first mounting portion 455 having the first accommodating space and a second mounting portion 456 having the second accommodating space 454 on its bottom side. The first mounting portion 455 is a block structure arranged along the height direction of the first bracket 450 in the length direction (i.e., the direction of maximum size). The second mounting portion 456 is a block structure arranged along the length direction of the first bracket 450 in the length direction (i.e., the direction of maximum size). The first mounting portion 455 and the second mounting portion 456 are connected in a T-shape. The first push rod 230 extends out of the first bracket 450 in the direction of the length direction of the first bracket 450 and extends out of the second mounting portion 456 from the side away from the first mounting portion 455. The first accommodating space includes a first mounting space 451, a second mounting space 452, and a third mounting space 453 that are sequentially connected along the width direction of the first bracket 450. A mounting post 457 protrudes from the first mounting space 451 along the length direction of the first bracket 450. The trip switch 410 and the closing switch 420 are respectively installed in the first mounting space 454. The first mounting part 455 is fitted onto the mounting post 457 through a mounting hole. The second mounting space 452 and the third mounting space 453 respectively penetrate the first mounting part 455 along the height direction of the first bracket 450. The push rod 430 is slidably disposed in the second mounting space 452. The direction in which the push rod driven part 437 extends out of the first bracket 450 is along the height direction of the first bracket 450, and it extends out of the first mounting part 455 from the bottom side opening of the second mounting space 452. The top of the push rod 430 protrudes from the side facing the push rod spring 440 and extends into the third mounting space. The third mounting space 453 includes a first limiting part 438, preferably a hook structure. A second limiting part 458 is provided within the third mounting space 453, preferably a straight rib structure located in the bottom opening of the third mounting space 453. A push rod spring 440 is installed within the third mounting space 453. The push rod spring 440 is preferably a tension spring, but can also be a leaf spring, compression spring, or other elastic element. One end of the push rod spring 440 is connected to the first limiting part 438, and the other end is connected to the second limiting part 458. It should be noted that the width direction of the first support 450 is the first direction, i.e., the X direction in the figure; the length direction of the first support 450 is the second direction, i.e., the Y direction in the figure; and the height direction of the first support 450 is the third direction, i.e., the Z direction in the figure.

[0071] like Figure 12 and Figure 14As shown, the electrical connection relationship of the controller 100, the trip coil 210, and the trip switch 410 in this embodiment is illustrated. The controller 100 is used to control the trip power supply 110 to energize and de-energize the trip coil 210. The trip switch 410 in this embodiment is a micro switch, including a first common contact C1, a first normally closed contact NC1, and a first normally open contact NO1. The first common contact C1 and one end of the trip coil 210 are electrically connected to the two poles of the trip power supply 110, and the other end of the trip coil 210 is connected to the first normally closed contact... NC1 is electrically connected; when push rod 430 moves from the second position to the first position, the first common contact C1 of the trip switch 410 is connected to the first normally closed contact NC1 and disconnected from the first normally open contact NO1, that is, the trip switch 410 switches from the off state to the on state; when push rod 430 moves from the first position to the second position, the first common contact C1 of the trip switch 410 is disconnected from the first normally closed contact NC1 and connected to the first normally open contact NO1, that is, the trip switch 410 switches from the on state to the off state. Of course, as other embodiments, the trip switch 410 can also use conventional moving contacts and stationary contacts.

[0072] like Figure 13 and Figure 15 As shown, the electrical connection relationship of the controller 100, closing coil 310, and closing switch 420 in this embodiment is illustrated. The controller 100 is used to control the closing power supply 120 to energize and de-energize the closing coil 310. The closing switch 420 in this embodiment is a micro switch, including a second common contact C2, a second normally closed contact NC2, and a second normally open contact NO2. The second common contact C2 and one end of the closing coil 310 are electrically connected to the two poles of the closing power supply 120, and the other end of the closing coil 310 is connected to the second normally closed contact C2. NC2 is electrically connected; when push rod 430 moves from the first position to the second position, the second common contact C2 of the closing switch 420 is connected to the second normally closed contact NC2 and disconnected from the second normally open contact NO2, that is, the closing switch 420 switches from the open state to the closed state; when push rod 430 moves from the second position to the first position, the second common contact C2 of the closing switch 420 disconnects from the second normally closed contact NC2 and connects to the second normally open contact NO2, that is, the closing switch 420 switches from the closed state to the open state. Of course, as other embodiments, the closing switch 420 can also use conventional moving contacts and stationary contacts.

[0073] like Figure 2 and Figure 16As shown in the diagram, the circuit breaker layout of this embodiment includes a controller 100 located on one side of the operating mechanism 800 in the first direction. The operating mechanism 800 and the closing coil 310 are arranged along the second direction. The closing electromagnet 320 is disposed within the closing coil 310. The opening coil 210 and the opening / closing control system 400 are located on the other side of the operating mechanism 800 in the first direction. The opening electromagnet 220 is disposed within the opening coil 210. The traction rod 600 is located on one side of the opening electromagnet 220 in the second direction and is positioned between the operating mechanism 800 and the closing coil 310 in the second direction. The operating mechanism 800 and the rotating shaft mechanism 500 are arranged along the third direction. The first direction is the X direction in the diagram, which is the width direction of the circuit breaker and the axial direction of the rotating shaft mechanism 500. The second direction is the Y direction in the diagram, which is the length direction of the circuit breaker. The third direction is the Z direction in the diagram, which is the height direction of the circuit breaker.

[0074] like Figure 16-18 As shown, the operating mechanism 800 of this embodiment includes a moving shaft 840, a locking element 850, and a return spring. The moving shaft 840 is linearly slidable and can move between an unlocked position and a locked position. The moving shaft 840 is connected to the rotating shaft mechanism 500 via a connecting rod 860. The closing electromagnet 320 is connected to the moving shaft 840, driving the moving shaft 840 to the locked position and driving the return spring to store energy, so that the moving shaft 840 drives the rotating shaft mechanism 500 to rotate to the closing position via the connecting rod 860, and the locking element 850 locks the moving shaft 840 in the locked position. The opening electromagnet 220 can drive the locking element 850 to release the lock on the moving shaft 840 and release the energy of the return spring. After the locking element 850 releases the lock on the moving shaft 840, the return spring drives the moving shaft 840 from the locked position to the unlocked position, so that the moving shaft 840 drives the rotating shaft mechanism 500 to rotate to the opening position via the connecting rod 860.

[0075] In this embodiment, the locking member 850 is provided with a locking surface 851 that locks with the moving shaft 840; one end of the connecting rod 860 is hinged to the moving shaft 840, and the other end of the connecting rod 860 is hinged to the rotating shaft mechanism 500; the traction rod 600 is connected to the locking member 850 of the operating mechanism 800; the opening electromagnet 220 is provided with a first push rod 230, which drives the traction rod 600; the closing electromagnet 320 is provided with a second push rod 330, which is connected to the moving shaft 840. When the closing coil 310 is energized, it drives the closing electromagnet 320. The closing electromagnet 320 drives the second push rod 330 to move in the closing direction, thereby driving the moving shaft 840 to slide to the locked position. That is, the moving shaft 840 is locked in place with the locking surface 851 of the locking member 850. The moving shaft 840 drives the rotating shaft mechanism 500 to rotate to the closing position through the connecting rod 860. At this time, because the moving shaft 840 is locked in place with the locking member 850, after the closing electromagnet 320 is de-energized, the return spring cannot drive the second push rod 330 to move in the reset direction. The rotating shaft mechanism 500 is locked in the closing position and cannot rotate to the opening position. The opening coil... When 210 is energized, it drives the tripping electromagnet 220. The tripping electromagnet 220 drives the first push rod 230 to drive the traction rod 600 to rotate, so that the traction rod 600 drives the locking member 850 to release the lock on the moving shaft 840 and release the energy of the reset spring. At this time, the locking member 850 rotates to the locking surface 851 and releases the locking engagement with the moving shaft 840. That is, the operating mechanism 800 is disengaged. As a result, the reset spring drives the second push rod 330 to move away from the locking surface 851 in the reset direction, and drives the moving shaft 840 to slide from the locked position to the unlocked position. The moving shaft 840 drives the rotating shaft mechanism 500 to rotate to the tripping position through the connecting rod 860. The reset spring is used to drive the second push rod 330 to reset after the closing coil 310 is de-energized. The reset spring can act on the closing electromagnet 320 and is located between the closing electromagnet 320 and the closing stationary iron core to drive the closing electromagnet 320 to reset; or the reset spring can act directly on the second push rod 330 or the moving shaft 840; or multiple reset springs can be set in different positions, all of which are possible.

[0076] Preferably, the locking member 850 is provided with a limiting hole, and the moving shaft 840 is inserted into the limiting hole. The limiting hole includes a guide portion 853 and a locking portion 854, which are connected in the length direction. The width of the guide portion 853 is greater than or equal to the outer diameter of the moving shaft 840 and less than the width of the locking portion 854, so that the locking surface 851 is formed at the connection between the locking portion 854 and the guide portion 853. The moving shaft 840 can slide within the guide portion 853, and after sliding into the locking portion 854, it is limited by the locking surface 851. The guide portion 853 and the locking portion 854 formed by the limiting hole cooperate with the traction rod 600 to lock and unlock the moving shaft 840. The overall structure is compact and simple.

[0077] In another embodiment, the locking member 850 may not be connected to the traction rod 600, and the moving shaft 840 may be locked by the spring-driven locking member 850.

[0078] For example, the operating mechanism 800 is also provided with a locking spring for driving the locking member 850. When the circuit breaker is in the open state, the length direction of the guide portion 853 of the locking member 850 forms an angle with the moving direction of the moving shaft 840. When the circuit breaker is closed, the moving shaft 840 first slides in the guide portion 853 of the locking member 850 and interferes with the guide portion 853 to drive the locking spring to store energy. When the moving shaft 840 continues to slide until it slides out of the guide portion 853 and into the locking portion 854, since the width of the locking portion 854 is greater than the width of the guide portion 853, the moving shaft 840 loses the limitation of the locking portion 854 in the width direction of the locking portion 854. Thus, the locking spring releases energy and drives the locking member 850 to rotate until the moving shaft 840 located in the locking portion 854 locks with the locking surface 851. In another embodiment, the locking member 850 may not have the guide portion 853 and the locking portion 854 formed by the limiting hole, but instead has a protruding hook on the outside, which rotates under the drive of the locking member spring and locks the moving shaft 840 through the hook.

[0079] Furthermore, the operating mechanism 800 includes a second bracket 810, an operating member 820, and a sliding member 830. The operating member 820 and the locking member 850 are rotatably mounted on the second bracket 810, and the sliding member 830 and the moving shaft 840 are slidably mounted on the second bracket 810. The operating member 820 and the sliding member 830 are driven to cooperate, and the sliding member 830 and the moving shaft 840 are driven to cooperate.

[0080] When the circuit breaker is manually closed, the operating member 820 is rotated, which drives the sliding member 830 to slide. The sliding member 830 drives the moving shaft 840 to slide along the guide part 853 until it locks into contact with the locking surface 851 of the locking member 850. The moving shaft 840 drives the connecting rod 860 to drive the rotating shaft mechanism 500 to rotate to the closed position, so that the rotating shaft mechanism 500 drives the moving contact 910 to contact the corresponding stationary contact 920. The rotating shaft mechanism 500, when rotated to the closing position, avoids the push rod driven part 437 of the push rod 430. When the circuit breaker successfully closes, the push rod 430 slides under the drive of the push rod spring 440. The push rod 430 pushes the second trigger part 421 of the closing switch 420 through the first pushing surface 4311, driving the second normally closed contact NC2 and the second common contact C2 to quickly switch to the open state, thereby cutting off the closing power supply 120. At the same time, the push rod 430 pushes the first normally closed contact NC1 and the first common contact C1 of the opening switch 410 to connect.

[0081] When the circuit breaker trips, the controller 100 issues a trip command. Since the first normally closed contact NC1 and the first common contact C1 of the trip switch 410 are in the closed state at this time, the trip control circuit is activated, energizing the trip power supply 110 to the trip coil 210. Under the magnetic field excitation of the trip coil 210, the trip electromagnet 220 drives the first push rod 230 to drive the traction rod 600, causing the traction rod 600 to rotate the locking member 850 of the operating mechanism 800. The locking member 850 first rotates until the locking surface 851 separates from the moving shaft 840 to release the lock on the moving shaft 840. Then, through the return spring, the second push rod 330 is reset, causing the moving shaft 840 to slide, thus allowing the moving shaft 840 to move. The connecting rod 860 drives the rotating shaft mechanism 500 to rotate to the open position, causing the rotating shaft mechanism 500 to separate the moving contact 910 from the corresponding stationary contact 920. When the circuit breaker successfully completes the tripping and opening, the rotating shaft mechanism 500 drives the push rod 430 to slide by acting on the push rod driven part 437. The push rod 430 pushes the first trigger part 411 of the opening switch 410 through the first pushing surface 4311, driving the first normally closed contact NC1 and the first common contact C1 to quickly switch to the open state, thereby cutting off the opening power supply 110 and de-energizing the opening coil 210. This effectively avoids the opening coil 210 from overheating and burning due to prolonged energization and reduces the losses caused by the heating of the opening coil 210.

[0082] When the circuit breaker automatically closes, the controller 100 issues a closing command. Since the second normally closed contact NC2 and the second common contact C2 of the closing switch 420 are in the closed state at this time, the closing control circuit is activated, energizing the closing coil 310 from the closing power supply 120. Under the magnetic field excitation of the closing coil 310, the closing electromagnet 320 drives the second push rod 330 to slide the moving shaft 840 of the operating mechanism 800. The moving shaft 840 drives the connecting rod 860 to rotate the rotating shaft mechanism 500 to the closing position, causing the rotating shaft mechanism 500 to move the moving contact 910 to the corresponding stationary contact. When the circuit breaker successfully closes, the push rod 430 slides under the drive of the push rod spring 440 until the push rod driven part 437 is in contact with the rotating shaft mechanism 500. This causes the push rod 430 to push the second trigger part 421 of the closing switch 420 through the first pushing surface 4311, driving the second normally closed contact NC2 and the second common contact C2 to quickly switch to the open state, thereby cutting off the closing power supply 120 and de-energizing the closing coil 310. This effectively avoids the closing coil 310 from overheating and burning due to prolonged energization and reduces the losses caused by the heating of the closing coil 310.

[0083] Preferably, the rotation center direction of the locking member 850 and the axial direction of the moving shaft 840 are respectively arranged along a first direction, the sliding member 830 and the moving shaft 840 are respectively slidably arranged along a second direction, and the rotation center direction of the operating member 820 is arranged along a third direction.

[0084] Preferably, the operating member 820 is provided with an eccentric shaft 822 that is eccentrically disposed with respect to the rotation center of the operating member 820, and the sliding member 830 is provided with a first sliding groove 831. The length direction of the first sliding groove 831 is greater than the outer diameter of the eccentric shaft 822, and the eccentric shaft 822 is slidably disposed in the first sliding groove 831. The operating member 820 drives the sliding member 830 to slide along the length direction of the first sliding groove 831 through the eccentric shaft 822, thereby the sliding member 830 drives the moving shaft 840 to slide.

[0085] The second bracket 810 in this embodiment includes two bracket side plates 811 spaced apart and opposite to each other along a first direction, and a positioning plate 812 vertically connected between the top sides of the two bracket side plates 811. The two bracket side plates 811 are respectively provided with a second sliding groove 813 and a third sliding groove 814, the length direction of which is along the second direction. The moving shaft 840 is slidably disposed at both ends within the third sliding groove 814, and the sliding member 830 is slidably disposed at both ends within the second sliding groove 813 for... The sliding member 830 is driven to slide, the locking member 850 is rotatably mounted between the two bracket side plates 811 and hinged to the lower traction rod 600, the moving shaft 840 passes through the limiting hole on the locking member 850; the operating member 820 is rotatably mounted on the positioning plate 812, and the eccentric shaft 822 on the operating member 820 extends into the first sliding groove 831 of the sliding member 830, the sliding member 830 has a downward protrusion of a sliding member protrusion 832 located on the radial side of the moving shaft 840, for driving the moving shaft 840 to slide.

[0086] Specifically, the operating component 820 is a round shaft structure rotatably mounted on the positioning plate 812. One end of the operating component 820 extends out of the housing 700 and is provided with an operating hole for manual operation in conjunction with a tool. The other end of the operating component 820 extends between the two support side plates 811, and a cam 821 coaxially arranged with the operating component 820 is provided on this end of the operating component 820. The eccentric shaft 822 is provided on the part of the cam 821 that protrudes from the operating component 820. The sliding component 830 is located above the moving shaft 840. The sliding component 830 has a downwardly protruding sliding component protrusion 832 located on one radial side of the moving shaft 840 for driving the moving shaft 840 to slide. The sliding component 830 is provided with a sliding shaft 833, the axial direction of the sliding shaft 833 is arranged along a first direction, and the two ends of the sliding shaft 833 slide... The sliding member 830 is preferably an inverted U-shaped structure, with its two sides spaced apart and opposite to each other along a first direction, and each side having a downward protrusion 832. The sliding member 830 preferably has two sliding shafts 833, which pass through both sides of the sliding member 830. The top edge of the sliding member 830 has a first sliding groove 831, and an eccentric shaft 822 is inserted into the first sliding groove 831, with the bottom end of the eccentric shaft 822 extending between the two sides of the sliding member 830 and located between the two sliding shafts 833. The operating mechanism 800 preferably has two connecting rods 860 spaced apart and opposite to each other along a first direction, which are hinged to both ends of the moving shaft 840 and located on both sides of the locking member 850.

[0087] The locking member 850 is provided with a locking member shaft 852. The two ends of the locking member shaft 852 are rotatably connected to the two bracket side plates 811. The axis of the locking member shaft 852 is the rotation center of the locking member 850. The locking member 850 is preferably a U-shaped structure. The two sides of the locking member 850 are spaced apart and opposite to each other along a first direction. The locking member shaft 852 passes through the two sides of the locking member 850. The two sides of the locking member 850 are respectively hinged to the traction rod 600. The two sides of the locking member 850 are respectively provided with the limiting hole. The length direction of the limiting hole is set along a second direction. The limiting hole is located in the second direction between the hinge point of the locking member 850 and the traction rod 600 and the locking member shaft 852.

[0088] The second push rod 330 includes a push rod body 331, which is preferably a U-shaped structure. The two sides of the push rod body 331 are spaced apart and opposite to each other along a first direction. The two sides of the push rod body 331 are respectively hinged to the moving shaft 840 and are respectively located between the connecting rod 860 and the locking member 850. That is, one side of the push rod body 331 is located between one side of the connecting rod 860 and one side of the locking member 850, and the other side of the push rod body 331 is located between the other side of the connecting rod 860 and the other side of the locking member 850. The two sides of the bottom edge of the push rod body 331 are respectively bent away from the two sides of the push rod body 331 and provided with push rod connecting plates 332. The two push rod connecting plates 332 are spaced apart and opposite to each other along a third direction and are connected to the two sides of the closing electromagnet 320.

[0089] It should be noted that the electric operating mechanism 300 typically also includes a second coil frame and a closing stationary iron core. The second coil frame is located inside the closing stationary iron core, and the closing coil 310 is wound around the outside of the second coil frame and located between the second coil frame and the closing stationary iron core. The closing electromagnet 320 is slidably disposed inside the second coil frame. The push rod connecting plate 332 of the second push rod 330 extends into the interior of the second coil frame and is connected to the closing electromagnet 320.

[0090] In this embodiment, the traction rod 600 is rotatably mounted on the second bracket 810. Of course, the traction rod 600 can also be rotatably mounted on the housing 700.

[0091] Optionally, one end of the sliding shaft 833 extends out of the second bracket 810, and the end of the sliding shaft 833 extending out of the second bracket 810 is provided with an indicator 870, which is provided with an indicator mark for indicating the closed and open states of the circuit breaker.

[0092] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0093] 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 protection scope of the present invention.

Claims

1. A switching control structure of a circuit breaker, comprising a controller (100), a tripping coil (210), a tripping electromagnet (220), a closing coil (310) and a closing electromagnet (320), the controller (100) being provided with a tripping control circuit for controlling the tripping coil (210) to be energized and de-energized, and a closing control circuit for controlling the closing coil (310) to be energized and de-energized, characterized in that: The circuit breaker control structure further includes a circuit breaker control system (400) and a first bracket (450). The circuit breaker control system (400) includes a circuit breaker switch (410), a circuit breaker switch (420), a push rod (430), and a push rod spring (440) for driving the push rod (430). The circuit breaker switch (410) is set in the circuit breaker control circuit, and the circuit breaker switch (420) is set in the circuit breaker control circuit. The first bracket (450) is provided with a first receiving space. The circuit breaker control system (400) is installed in the first receiving space, and the push rod (430) of the circuit breaker control system (400) is provided with a push rod driven part (437) extending out of the first bracket (450). When the push rod driven part (437) is subjected to force, the push rod (430) can move from the first position to the second position, so that the push rod (430) drives the trip switch (410) to switch from the on state to the off state, and the closing switch (420) to switch from the off state to the on state, and the push rod (430) drives the push rod spring (440) to store energy; The push rod spring (440) drives the push rod (430) to move from the second position to the first position, so that the push rod (430) drives the trip switch (410) to switch from the open state to the closed state, and the closing switch (420) to switch from the closed state to the open state.

2. The opening and closing control structure of a circuit breaker according to claim 1, characterized in that: The first bracket (450) is also provided with a second receiving space (454), the trip coil (210) and the trip electromagnet (220) are installed in the second receiving space (454), and the first push rod (230) provided on the trip electromagnet (220) extends out of the first bracket (450) to trigger the operating mechanism (800) to trip.

3. The opening and closing control structure of a circuit breaker according to claim 2, characterized in that: The first bracket (450) includes a first mounting part (455) having the first accommodating space and a second mounting part (456) having the second accommodating space (454) on its bottom side. The first mounting part (455) is a block structure with its length direction along the height direction of the first bracket (450), and the second mounting part (456) is a block structure with its length direction along the length direction of the first bracket (450). The first mounting part (455) and the second mounting part (456) are connected in a T-shape.

4. The opening and closing control structure of a circuit breaker according to claim 1, characterized in that: The trip switch (410) is provided with a first trigger part (411), the closing switch (420) is provided with a second trigger part (421), and the push rod (430) is provided with a first push part (431) and a second push part (432). When the push rod (430) is in the first position, the first trigger part (411) is located on the path of the first push part (431) moving to the second position. When the push rod (430) moves from the first position to the second position, the first push part (431) pushes the first trigger part (411) to drive the trip switch (410) to switch from the connected state to the disconnected state. When the push rod (430) is in the second position, the second trigger part (421) is located on the path of the second push part (432) moving from the second position to the first position. When the push rod (430) moves from the second position to the first position, the second push part (432) pushes the second trigger part (421) to drive the closing switch (420) to switch from the connected state to the disconnected state.

5. The opening and closing control structure of a circuit breaker according to claim 4, characterized in that: The first pushing part (431) is provided with a first pushing surface (4311) and a first limiting surface (4312) connected together. The first pushing surface (4311) and the first limiting surface (4312) are arranged sequentially along the direction in which the push rod (430) moves from the second position to the first position. The first pushing surface (4311) is set at an angle to the direction of movement of the push rod (430). The first limiting surface (4312) is parallel to the direction of movement of the push rod (430). When the push rod (430) moves from the first position to the second position, the first pushing part (431) first pushes the first trigger part (411) through the first pushing surface (4311) to drive the trip switch (410) to switch from the on state to the off state. Then, the first limiting surface (4312) limits the first trigger part (411) to keep the trip switch (410) in the off state. And / or, the second pushing part (432) is provided with a connected second pushing surface (4321) and a second limiting surface (4322). The second pushing surface (4321) and the second limiting surface (4322) are arranged sequentially along the direction in which the push rod (430) moves from the first position to the second position. The second pushing surface (4321) is set at an angle to the direction of movement of the push rod (430), and the second limiting surface (4322) is parallel to the direction of movement of the push rod (430). When the push rod (430) moves from the second position to the first position, the second pushing part (432) first pushes the second trigger part (421) through the second pushing surface (4321) to drive the closing switch (420) to switch from the on state to the off state. Then, the second limiting surface (4322) limits the second trigger part (421) to keep the closing switch (420) in the off state.

6. The opening and closing control structure of a circuit breaker according to claim 4, characterized in that: The push rod (430) is provided with a first clearance groove (433) and a first groove (434). The first clearance groove (433) and the first groove (434) are arranged sequentially along the direction in which the push rod (430) moves from the second position to the first position. A first protruding pushing part (431) is formed between the first clearance groove (433) and the first groove (434). When the push rod (430) is in the first position, the first trigger part (411) extends into the first clearance groove (433). And / or, the push rod (430) is provided with a second clearance groove (435) and a second groove (436), the second clearance groove (435) and the second groove (436) are arranged sequentially along the direction in which the push rod (430) moves from the first position to the second position, a second protruding pushing part (432) is formed between the second clearance groove (435) and the second groove (436), and when the push rod (430) is in the second position, the second triggering part (421) extends into the second clearance groove (435).

7. The opening and closing control structure of a circuit breaker according to claim 1, characterized in that: The push rod (430) and push rod spring (440) of the opening and closing control system (400) are arranged along a first direction, and the opening switch (410) and closing switch (420) are arranged side by side along a second direction and are located on the side of the push rod (430) away from the push rod spring (440) in the first direction. The push rod (430) is slidably arranged along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

8. The opening and closing control structure of a circuit breaker according to claim 1, characterized in that: The first bracket (450) includes a first mounting part (455) having the first accommodating space. The first accommodating space includes a first mounting space (451), a second mounting space (452), and a third mounting space (453) that are sequentially connected along the width direction of the first bracket (450). The trip switch (410) and the closing switch (420) are respectively installed in the first mounting space (451). The second mounting space (452) and the third mounting space (453) pass through the first mounting part (455) along the height direction of the first bracket (450). The push rod (430) is slidably disposed in the second mounting space (452). The push rod spring (440) is installed in the third mounting space (453).

9. A circuit breaker, comprising a housing (700), a traction rod (600) installed within the housing (700), an operating mechanism (800), and a rotating shaft mechanism (500), wherein the operating mechanism (800) is connected to the rotating shaft mechanism (500), the rotating shaft mechanism (500) is provided with at least one movable contact (910), the operating mechanism (800) comprises a moving shaft (840), a locking element (850), and a return spring, the moving shaft (840) is linearly sliding and capable of moving between an unlocked position and a locked position, the moving shaft (840) is connected to the rotating shaft mechanism (500) via a connecting rod (860), characterized in that: It also includes the circuit breaker opening and closing control structure as described in any one of claims 1-8. The closing electromagnet (320) of the opening and closing control structure is connected to the moving shaft (840). When the closing coil (310) is energized, it drives the closing electromagnet (320) to move the moving shaft (840) to the locked position and the return spring stores energy. At the same time, the moving shaft (840) drives the rotating shaft mechanism (500) to rotate to the closing position through the connecting rod (860), so that the rotating shaft mechanism (500) drives the moving contact (910) to contact the corresponding stationary contact (920), and the locking member (850) locks the moving shaft (840) in the locked position. The rotating shaft mechanism (500) rotated to the closing position avoids the push rod driven part (437) of the push rod (430) of the opening and closing control structure, so that the push rod spring (440) drives the push rod (430) to move from the second position to the first position. When the opening and closing control structure is energized, the opening coil (210) drives the opening electromagnet (220). The opening electromagnet (220) drives the traction rod (600) to unlock the moving shaft (840). The reset spring drives the moving shaft (840) from the locked position to the unlocked position, so that the moving shaft (840) drives the rotating shaft mechanism (500) to rotate to the opening position through the connecting rod (860). The rotating shaft mechanism (500) drives the moving contact (910) to separate from the corresponding stationary contact (920). The rotating shaft mechanism (500) rotated to the opening position drives the push rod (430) to move from the first position to the second position through the action of the push rod driven part (437).

10. The circuit breaker of claim 9, wherein: The controller (100) is located on one side of the operating mechanism (800) in the first direction. The operating mechanism (800) and the closing coil (310) are arranged along the second direction. The closing electromagnet (320) is arranged inside the closing coil (310). The opening coil (210) and the opening / closing control system (400) are located on the other side of the operating mechanism (800) in the first direction. The opening electromagnet (220) is arranged inside the opening coil (210). The traction rod (600) is located on one side of the opening electromagnet (220) in the second direction and is located between the operating mechanism (800) and the closing coil (310) in the second direction. The operating mechanism (800) and the rotating shaft mechanism (500) are arranged along the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

11. The circuit breaker of claim 9, wherein: The locking member (850) is provided with a locking surface (851) that locks into the moving shaft (840). The locking member (850) is provided with a limiting hole. The moving shaft (840) is inserted into the limiting hole. The limiting hole includes a guide part (853) and a locking part (854). The guide part (853) and the locking part (854) are connected in the length direction. The width of the guide part (853) is smaller than the width of the locking part (854), so that the locking surface (851) is formed at the connection between the locking part (854) and the guide part (853).

12. The circuit breaker of claim 11, wherein: The operating mechanism (800) includes a second bracket (810), an operating member (820), and a sliding member (830). The operating member (820) and the locking member (850) are rotatably mounted on the second bracket (810), and the sliding member (830) and the moving shaft (840) are slidably mounted on the second bracket (810). The operating member (820) and the sliding member (830) are driven to cooperate, and the sliding member (830) and the moving shaft (840) are driven to cooperate. Rotating the operating member (820) can drive the sliding member (830) to slide and drive the moving shaft (840) to slide along the guide portion (853) to lock and cooperate with the locking surface (851) of the locking member (850).

13. The circuit breaker of claim 12, wherein: The second bracket (810) includes two bracket side plates (811) spaced apart and opposite to each other along a first direction, and a positioning plate (812) connected between the top sides of the two bracket side plates (811). The two bracket side plates (811) are respectively provided with a second sliding groove (813) and a third sliding groove (814), the length direction of the second sliding groove (813) and the third sliding groove (814) is arranged along the second direction; the two ends of the moving shaft (840) are slidably disposed in the third sliding groove (814), the two ends of the sliding member (830) are slidably disposed in the second sliding groove (813), and the locking member (840) is slidably disposed in the second sliding groove (813). 50) Rotatably mounted between two bracket side plates (811) and hinged to the lower traction rod (600), the moving shaft (840) passes through the limiting hole on the locking member (850); the operating member (820) is rotatably mounted on the positioning plate (812), and the eccentric shaft (822) on the operating member (820) extends into the first sliding groove (831) of the sliding member (830) to drive the sliding member (830) to slide, the sliding member (830) has a downward protrusion with a sliding member protrusion (832) located on the radial side of the moving shaft (840) to drive the moving shaft (840) to slide.

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