Operating device and circuit breaker

Abstract

The invention relates to the field of low-voltage electric appliances, in particular to an operating device and a circuit breaker, in the operating device, an electromagnetic system comprises a coil assembly, a main armature and a main reset piece, the coil assembly comprises a main magnet yoke and an electromagnetic coil, and the main reset piece acts on the main armature to enable the main armature to have the movement trend of being separated from the main magnet yoke; the transmission frame comprises a transmission frame bearing part and at least one group of transmission frame linkage parts used for being in transmission connection with a moving contact assembly of the contact mechanism, the electromagnetic system and the transmission frame linkage parts are located on the two sides of the transmission frame bearing part respectively, and the main armature is arranged on the transmission frame bearing part and fixedly connected with the transmission frame bearing part. The two sides of the linkage part of the transmission frame are respectively provided with an arrangement space used for arranging the contact mechanism. The operation device is simple in structure and convenient to assemble.

Description

Technical Field

[0001] The present invention relates to the field of low-voltage electrical appliances, and particularly to an operating device and a circuit breaker. Background Art

[0002] For existing switching electrical appliances (such as contactors) that use an electromagnetic system to drive the closing and opening of the contact mechanism, the structural layout of the yoke, electromagnetic coil, main armature, and transmission structure of the operating device, as well as the connection method between the transmission structure and the contact mechanism, result in a complex and insufficiently compact structural layout of the switching electrical appliance, and the assembly operation is complex. In addition, the structure of the transmission structure of its operating device is complex, which is not convenient for production and assembly. Summary of the Invention

[0003] The purpose of the present invention is to overcome at least one defect of the prior art, and to provide an operating device and a circuit breaker including the operating device, the structure of the operating device is simple and convenient for assembly.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An operating device includes an electromagnetic system and a transmission frame. The electromagnetic system includes a coil assembly, a main armature, and a main reset member. The coil assembly includes a main yoke that cooperates with the main armature and an electromagnetic coil sleeved on the main yoke. The main reset member acts on the main armature to make it have a movement tendency to separate from the main yoke.

[0006] The transmission frame includes a transmission frame bearing part and at least one group of transmission frame linkage parts. The electromagnetic system and the transmission frame linkage parts are respectively located on both sides of the transmission frame bearing part. The main armature is arranged on the transmission frame bearing part and fixedly connected thereto, so that the main armature and the transmission frame move synchronously. Arrangement spaces for arranging the contact mechanism are respectively provided on both sides of the transmission frame linkage part. The transmission frame linkage part is used for driving connection with the moving contact assembly of the contact mechanism.

[0007] Further, the transmission frame includes two or more groups of transmission frame linkage parts arranged side by side and respectively connected to the transmission frame bearing part. An arrangement space is provided between adjacent two transmission frame linkage parts, and an arrangement space is respectively provided on both sides of the two transmission frame linkage parts at both ends.

[0008] Further, the operating device further includes a transmission frame guiding structure corresponding to the transmission frame linkage part. The transmission frame guiding structure is arranged on the housing structure for accommodating the contact mechanism, and the transmission frame linkage part is in sliding limit fit with the transmission frame guiding structure.

[0009] Further, the transmission frame includes two groups of transmission frame linkage parts arranged side by side and respectively connected to the transmission frame bearing part. An arrangement space is provided between the two groups of transmission frame linkage parts.

[0010] Furthermore, the transmission frame bearing part includes an armature mounting groove provided on the side thereof facing the electromagnetic system; the operating device further includes at least one connecting plate, the main armature is arranged in the armature mounting groove, the connecting plate is inserted in the middle of the main armature and both ends are respectively inserted in a pair of side walls of the armature mounting groove.

[0011] Furthermore, the connecting plate includes a connecting section and a mating section, the two connecting sections are respectively connected to both ends of the mating section, the two connecting sections are coplanar and offset to the same side of the mating section, and the connecting section is arranged parallel to the mating section;

[0012] A main armature mounting hole is provided in the middle of the main armature, the connecting plate is inserted in the main armature mounting hole, the mating section and part of each connecting section are located in the main armature mounting hole, and among a pair of side surfaces of the main armature mounting hole, one is in interference fit with the mating section and the other is in interference fit with the two connecting sections.

[0013] Furthermore, the main yoke is an E-shaped yoke, which includes three main yoke arms arranged side by side at intervals, and the electromagnetic coil is sleeved on the main yoke arm in the middle; the main armature includes three main armature mating convex platforms arranged side by side at intervals, and the three main armature mating convex platforms are respectively in relative fit with the three main yoke arms.

[0014] Furthermore, the operating device further includes a main reset member, the main reset member is a main reset spring, four groups of main reset springs are arranged around the coil assembly and located at the four vertices of a rectangle, and one end of each group of main reset springs is fixedly arranged and the other end is in cooperation with the transmission frame bearing part.

[0015] Furthermore, the transmission frame bearing part is provided with four groups of reset spring seats respectively cooperating with the four groups of main reset springs, one end of each group of main reset springs is fixedly arranged and the other end is arranged on the corresponding reset spring seat; the two main reset members are located on one side of the armature mounting groove of the transmission frame bearing part, and the other two main reset members are located on the other side of the armature mounting groove.

[0016] Furthermore, the operating device further includes a linkage rod, and the linkage rod is used to be inserted into the transmission frame linkage part and the moving contact assembly; the transmission frame linkage part is of a straight plate-shaped structure.

[0017] A circuit breaker includes the described operating device.

[0018] For the operating device of the present invention, the coil assembly, the main armature and the transmission frame are reasonably arranged, which is convenient for assembly; moreover, the relative positional relationship between the transmission frame linkage part of the transmission frame and the contact mechanism is convenient for the connection between the transmission frame and the contact mechanism, and the assembly is simple; moreover, the structure of the transmission frame is simple, which is convenient for production and assembly.

[0019] In addition, the assembly of the main armature and the transmission frame bearing part is simple and reliable.

[0020] In addition, the transmission frame linkage part is connected to the moving contact assembly through a linkage rod, so the assembly is simple and the transmission is reliable.

[0021] The circuit breaker of the present invention has a simple structure and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a projection view of the circuit breaker of the present invention perpendicular to its width direction;

[0023] Figure 2 is a first exploded view of the circuit breaker of the present invention;

[0024] Figure 3 is a second exploded view of the circuit breaker of the present invention;

[0025] Figure 4 is a first cross-sectional view of the circuit breaker of the present invention, wherein the moving contact is disconnected from the stationary contact;

[0026] Figure 5 is a second cross-sectional view of the circuit breaker of the present invention, with the moving contact and the stationary contact closed;

[0027] Figure 6 It is a schematic structural diagram of a circuit breaker without a housing according to the present invention, showing the connection relationship between a transmission frame, a linkage rod and a moving contact assembly;

[0028] Figure 7 It is a structural schematic diagram of the contact unit of the present invention;

[0029] Figure 8 is a third cross-sectional view of the circuit breaker of the present invention, showing the assembly relationship between the quick-action mechanism and the transmission frame;

[0030] Figure 9 The present invention Figure 10 An enlarged structural diagram of the P part;

[0031] Figure 10 is a fourth cross-sectional view of the circuit breaker of the present invention, wherein the triggering member triggers the auxiliary switch to switch it from a closed state to an open state;

[0032] Figure 11 It is a structural schematic diagram of the transmission frame of the present invention;

[0033] Figure 12 It is a schematic structural diagram of the trigger member of the present invention.

[0034] Description of Reference Numerals

[0035] 110 housing, 110c housing cover; 110b housing base; s1 upper area, s2 lower area, s20 contact area, s21 arc extinguishing area;

[0036] g Transmission frame guide structure;

[0037] o Operating device;

[0038] s200 Electromagnetic system; 210 Electromagnetic coil, 220 Main yoke, 230 Main armature;

[0039] 310 Transmission frame, 3100 Transmission frame bearing part, 3100c Bearing part installation bin, 31000 Installation bin cavity, 31001 Yoke guiding part, 31002 Installation bin opening, 3100g Armature installation groove, 3100p Transmission frame jack, 3101 Transmission frame linkage part, 31010 Linkage part hole, 3102 Return spring seat; 320 Main return part; 330 Linkage rod; 340 Connection plate, 3401 Connection section, 3402 Matching section;

[0040] d Switch device;

[0041] c Contact unit;

[0042] 400 Unit housing, 400g Unit housing guiding hole, 400p Unit housing jack; 410 Arc extinguishing chamber; 420 Contact mechanism; 421 Moving contact assembly, 4210 Contact support, 4211 Moving contact; 422 Static contact group, 4220 Static contact; 430 Zero arcing mechanism;

[0043] 500 Quick-acting mechanism, 510 - 520 Electromagnetic structure, 510 Auxiliary yoke, 520 Auxiliary armature, 530 Auxiliary return part, 540 Trigger part, 540b Trigger part body, 5400 Trigger part top plate, 5401 Trigger part base plate, 5402 Trigger part side plate, 5403 Trigger boss, 5404 Trigger part driven part, 550 Trigger part return part, 560 Auxiliary switch; Detailed implementation manners

[0044] The following embodiments given in conjunction with the accompanying drawings further illustrate the detailed implementation manners of the circuit breaker of the present invention. The circuit breaker of the present invention is not limited to the descriptions of the following embodiments.

[0045] As Figures 1-12 shown, it is an embodiment of the circuit breaker of the present invention. The circuit breaker in this embodiment is preferably a contactor-type circuit breaker.

[0046] As Figures 2-6As shown, the circuit breaker of this embodiment includes a housing 110, an operating device o disposed in the housing 110, and at least one group of switch devices d. The operating device o includes an electromagnetic system 200, a transmission frame 310, and a main reset member 320. The electromagnetic system 200 includes a coil assembly and a main armature 230 used in conjunction with each other. The coil assembly includes a main magnetic yoke 220 and an electromagnetic coil 210 sleeved on the main magnetic yoke 220. The main armature 230 is fixedly connected to the transmission frame 310 and moves synchronously. The main reset member 320 acts on the main armature 230 (directly or indirectly) to make it have a movement tendency to separate from the main magnetic yoke 220. Each group of switch devices d includes a contact unit c, and the contact unit c includes a contact mechanism 420. The contact mechanism 420 includes a movable contact assembly 421 and a static contact group 422 used in conjunction with each other. The transmission frame 310 is transmission-connected to the movable contact assembly 421. The electromagnetic system 200 is powered, that is, the electromagnetic system 200 is connected to the working power supply, and the coil assembly generates a magnetic field to make the main yoke 220 attract the main armature 230, and the main armature 230 drives the moving contact assembly 421 to move through the transmission frame 310, so that the moving contact assembly 421 and the static contact group 422 are closed, that is, the circuit breaker is closed; the electromagnetic system 200 is de-energized, that is, the working power supply of the electromagnetic system 200 is cut off, the magnetic field of the coil assembly disappears, the main reset member 320 drives the armature 230 to separate from the main yoke 220 and reset, and at the same time, the transmission frame 310 drives the moving contact assembly 421 and the static contact group 422 to disconnect, that is, the circuit breaker is opened.

[0047] Furthermore, the contact unit c also includes an arc extinguishing chamber 410 used in conjunction with the contact mechanism 420. Furthermore, the switch device d also includes a zero arcing mechanism 430, and the exhaust port of the arc extinguishing chamber 410 is connected to the outside through the zero arcing mechanism 430, that is, the gas exhausted from the arc extinguishing chamber 410 is discharged from the inside of the circuit breaker through the zero arcing mechanism 430 and enters the external environment where the circuit breaker is located; the zero arcing mechanism 430 cooperates with the arc extinguishing chamber 410 to ensure that the arc generated by the contact mechanism 420 is completely extinguished to prevent the arc from moving out of the circuit breaker.

[0048] like Figures 1-2 , 4-6, 8, and 10 are a layout of the circuit breaker of this embodiment:

[0049] like Figure 1As shown, in the projection perpendicular to the width direction of the circuit breaker, the housing 110 includes an upper area s1 and a lower area s2 arranged side by side along the height direction of the circuit breaker, and the lower area s2 includes a contact area s20 and an arc extinguishing area s21 arranged side by side along the length direction of the circuit breaker; the length direction, width direction and height direction of the circuit breaker are preferably the directions of the three coordinate axes of the three-dimensional coordinate system, that is, in space, the length direction, width direction and height direction of the circuit breaker are perpendicular to each other. The electromagnetic system 200 is arranged in the upper area s1, and the transmission frame 310 extends from the upper area s1 to the lower area s2 to be transmission-connected with the moving contact assembly 421 of each switch device d to drive the moving contact assembly 421 to move. In the switch device d, the contact unit c is arranged in the contact area s20, and the zero arcing mechanism 430 is arranged in the arc extinguishing area s21.

[0050] The circuit breaker of this embodiment adopts an operating device and a contact mechanism similar to those of a contactor, which greatly improves the service life; and its structural layout is reasonable and compact (especially the coil assembly, the main armature and the transmission frame are reasonably arranged and easy to assemble), which improves the utilization efficiency of the internal space of the circuit breaker. The various structures are independent of each other and easy to assemble. In addition, the combined use of the arc extinguishing chamber 410 and the zero arcing mechanism 430 significantly improves the arc extinguishing performance of the circuit breaker and prevents the arc from escaping the circuit breaker.

[0051] Further, such as Figure 2 As shown, the circuit breaker of this embodiment includes at least two groups of switch devices d, that is, the circuit breaker of this embodiment includes two or more groups of switch devices d, each switch device d is arranged side by side along the width direction of the circuit breaker and is arranged in the lower area s2. Specifically, the circuit breaker of this embodiment is a three-phase circuit breaker, which includes three groups of switch devices d arranged side by side along the width direction of the circuit breaker, and the three groups of switch devices d are arranged in the lower area s2. Those skilled in the art can adjust the number of switch devices d according to actual needs.

[0052] Further, such as Figure 2 , 4 As shown in , 5, the coil assembly, the main armature 230, and the transmission frame 310 are sequentially arranged along the height direction of the circuit breaker. Further, the main reset member 320 is a main reset spring, and four main reset springs are distributed at four vertices of a rectangle and arranged around the coil assembly, and the two ends of each main reset spring are respectively matched with the housing 110 and the transmission frame 310.

[0053] Further, such as Figure 4 and 5As shown, in the housing 110, the two arc extinguishing regions s21 are respectively located on both sides of the contact region s20 in the length direction of the circuit breaker. That is, the housing 110 includes two arc extinguishing regions s21 and one contact region s20, and the two arc extinguishing regions s21 are located on both sides of the contact region s20 in the length direction of the circuit breaker; in the switching device d, the static contact group 422 includes two sets of static contacts 4220 arranged side by side in the length direction of the circuit breaker, and the two ends of the moving contact 4211 of the moving contact assembly 421 are synchronously closed and disconnected from the two sets of static contacts 4220. The two arc extinguishing chambers 410 are respectively located on both sides of the contact mechanism 420 in the length direction of the circuit breaker, and the two zero arc leakage mechanisms 430 are respectively matched with the two arc extinguishing chambers 410 (that is, the exhaust ports of the two arc extinguishing chambers 410 are respectively communicated with the outside of the circuit breaker through the two zero arc leakage mechanisms 430), and are respectively located on both sides of the contact unit c in the length direction of the circuit breaker and are respectively arranged in the two arc extinguishing regions s21. Specifically, the moving contact assembly 421 moves towards the static contact group 422 to make the moving contact 4211 close with the two sets of static contacts 4220, and the moving contact assembly 421 moves away from the static contact group 422 to make the moving contact 4211 disconnect from the two sets of static contacts 4220; each set of the switching device d includes two arc extinguishing chambers 410 and two zero arc leakage mechanisms 430. The two arc extinguishing chambers 410 are located on both sides of the corresponding contact mechanism 420 in the length direction of the circuit breaker, and the two zero arc leakage mechanisms 430 are located on both sides of the corresponding two arc extinguishing chambers 410 in the length direction of the circuit breaker, that is, the two zero arc leakage mechanisms 430 are located on both sides of the corresponding contact unit c in the length direction of the circuit breaker. Further, the electromagnetic system 200, the static contact group 422, and the moving contact assembly 421 are arranged side by side in sequence along the height direction of the circuit breaker. That is, in each set of the contact mechanisms 420, the static contact group 422 and the moving contact assembly 421 are arranged side by side along the height direction of the circuit breaker, and the static contact group 422 is located between the electromagnetic system 200 and the moving contact assembly 421.

[0054] Further, as Figure 3 and 6As shown, the drive frame 310 includes at least one set of drive frame linkage parts 3101 that are drivingly connected to the moving contact assembly 421. Arrangement spaces for arranging the contact mechanism 420 are provided on both sides of the drive frame linkage part 3101, that is, the drive frame linkage part 3101 and the contact mechanism 420 are arranged side by side. The drive frame linkage part 3101 and the switch device d are arranged side by side in the width direction of the circuit breaker. The drive frame linkage part 3101 is preferably drivingly connected to the moving contact assembly 421 of the switch device d through a linkage rod 330. The relative positional relationship between the drive frame linkage part and the contact mechanism facilitates the connection between the drive frame and the contact mechanism, and the assembly is simple; moreover, the drive frame linkage part and the moving contact assembly are drivingly connected through a linkage rod, with simple assembly and reliable transmission. Further, the circuit breaker in this embodiment includes at least two sets of switch devices d, and the switch devices d are arranged side by side in the width direction of the circuit breaker. The drive frame 310 includes at least one drive frame linkage part 3101, and one drive frame linkage part 3101 is provided between every two adjacent sets of switch devices d; in other words, the circuit breaker in this embodiment includes n switch devices d, n≥2, the drive frame 310 includes m drive frame linkage parts 3101, m≥1, and in this embodiment of the circuit breaker, m=n - 1 is preferably selected to ensure the balance of the force on the drive frame 310 and the synchronization of the closing and opening of each switch device d; of course, when n≥3, the value range of m can be [1, (n - 1)], that is, the value of m is not limited to n - 1. Or, the circuit breaker in this embodiment includes at least two sets of switch devices d, and the switch devices d are arranged side by side in the width direction of the circuit breaker. The drive frame 310 includes two drive frame linkage parts 3101, and each switch device d is arranged between the two drive frame linkage parts 3101. The two drive frame linkage parts 3101 are both drivingly connected to the moving contact assembly 421 of each switch device d. Or, when the circuit breaker in this embodiment includes only one set of switch devices d, that is, when the circuit breaker is a single-phase circuit breaker (1P), the drive frame 310 includes two drive frame linkage parts 3101, and an arrangement space is provided between the two drive frame linkage parts 3101, that is, the two drive frame linkage parts 3101 are located on both sides of a switch device d and are respectively drivingly connected to the moving contact assembly 421 of the switch device d.

[0055] Specifically, the circuit breaker in this embodiment includes three sets of switch devices d arranged side by side in the width direction of the circuit breaker. The drive frame 310 includes two drive frame linkage parts 3101 arranged side by side in the width direction of the circuit breaker. One drive frame linkage part 3101 is provided between every two adjacent sets of switch devices d. Each switch device d and each drive frame linkage part 3101 are preferably drivingly connected to each other through a linkage rod 330.

[0056] Such as Figure 2 、 4As shown in FIG. -6, the circuit breaker of this embodiment further includes at least one set of quick-acting mechanism 500, which is used to cut off the power supply of the electromagnetic system 200 when a short-circuit fault occurs in the circuit where the corresponding switching device d is located (that is, the main circuit where the corresponding moving contact assembly 421 is located). Further, the quick-acting mechanism 500 is arranged side by side with the main armature 230 in the length direction of the circuit breaker, and each set of switching devices d is used in cooperation with at least one set of quick-acting mechanism 500.

[0057] The following is the first cooperation mode between the quick-acting mechanism 500 and the electromagnetic system 200:

[0058] The electromagnetic system 200 further includes a control circuit board, which is connected to the electromagnetic coil 210 of the electromagnetic system 200 for cutting off and restoring the power supply of the electromagnetic coil 210; each set of the quick-acting mechanism 500 includes an auxiliary switch 560, and the auxiliary switch 560 is connected to the control circuit board; when a short-circuit fault occurs in the circuit where the switching device d is located (that is, the main circuit where the corresponding moving contact assembly 421 is located), the auxiliary switch 560 switches its state (for example, the auxiliary switch 560 switches from the conducting state to the non-conducting state; or the auxiliary switch 560 switches from the non-conducting state to the conducting state; or the auxiliary switch 560 includes two-way contact structures, namely the first-way contact structure and the second-way contact structure, the first-way contact structure is a normally closed contact, the second-way contact structure is a normally open contact, and the state switching of the auxiliary switch 560 means that the normally closed contact disconnects while the normally open contact closes) and outputs a control signal to the control circuit board, and the control circuit board cuts off the power supply of the electromagnetic coil 210; after the short-circuit fault is eliminated, the auxiliary switch 560 resets, and then the control circuit board restores the power supply of the electromagnetic coil 210. The quick-acting mechanism 500 realizes the short-circuit protection function of the circuit breaker, and can quickly cut off the circuit when a short-circuit current appears in the circuit where the circuit breaker is located, so as to realize the short-circuit protection of other electrical equipment connected in the circuit; moreover, the auxiliary switch 560 is arranged on the transmission frame 310 on one side of the main armature 230, which can effectively shorten the connection line between the auxiliary switch 560 and the electromagnetic coil 210 of the electromagnetic system 200 and simplify the internal circuit layout of the circuit breaker; moreover, the structure of the quick-acting mechanism 500 is simple and convenient for assembly. Further, the auxiliary switch 560 of the quick-acting mechanism 500 is arranged on the transmission frame 310.

[0059] Further, in the circuit breaker of this embodiment, the control circuit board is also used to connect a remote communication control device (such as a host computer), and the remote communication control device can remotely conduct and cut off the power supply of the electromagnetic coil 210 through the control circuit board and monitor the power supply state of the electromagnetic coil 210, etc. Further, the control circuit board is arranged in the upper region s1 and is arranged side by side with the electromagnetic system 200; the control circuit board and the electromagnetic system 200 can be arranged side by side along the length direction of the circuit breaker or along the width direction of the circuit breaker.

[0060] In this embodiment, the circuit breaker preferably adopts the first cooperation mode of the quick-acting mechanism 500 and the electromagnetic system 200.

[0061] The following is the second cooperation mode of the quick-acting mechanism 500 and the electromagnetic system 200:

[0062] Each group of the quick-acting mechanisms 500 includes an auxiliary switch 560 connected in series in the power supply circuit of the electromagnetic system 200, that is, the closing and opening of the auxiliary switch 560 will cause the conduction and disconnection of the power supply circuit of the electromagnetic coil 210 of the electromagnetic system 200. The auxiliary switch 560 is a normally closed switch, that is, without considering factors other than the auxiliary switch 560, the power supply circuit of the electromagnetic system 200 remains in a conducting state; when a short-circuit fault occurs in the circuit where the switch device d is located (that is, the main circuit where the corresponding moving contact assembly 421 is located), the corresponding quick-acting mechanism 500 acts to trigger the auxiliary switch 560 to open, cut off the power supply circuit of the electromagnetic system 200 to de-energize the electromagnetic system 200, then the electromagnetic coil 210 stops generating a magnetic field, and the main armature 230 moves away from the main magnetic yoke 220 under the drive of the main resetting member 320. At the same time, the transmission frame 310 moves synchronously with the main armature 230 to drive the moving contact assemblies 421 of the respective switch devices d to disconnect from the static contact groups 422, and finally the circuit breaker trips.

[0063] Further, the quick-acting mechanism 500 further includes an electromagnetic structure 510-520. The electromagnetic structure 510-520 includes an auxiliary yoke 510, an auxiliary armature 520, and an auxiliary reset member 530. The auxiliary yoke 510 is disposed on the static contact set 422 of the corresponding switching device d. The auxiliary armature 520 is disposed on the transmission frame 310. The auxiliary reset member 530 acts on the auxiliary armature 520 to give it a movement tendency to separate from the auxiliary yoke 510, that is, the auxiliary reset member 530 applies a force to the auxiliary armature 520 to enable it to separate from the auxiliary yoke 510. The auxiliary armature 520 and the auxiliary yoke 510 are arranged side by side along the height direction of the circuit breaker. When a short-circuit fault occurs in the circuit where the switching device d is located, the auxiliary yoke 510 of the corresponding quick-acting mechanism 500 attracts the auxiliary armature 520 to move. The auxiliary armature 520 triggers the auxiliary switch 560 to switch states, and the auxiliary switch 560 outputs a control signal to the control circuit board, and the control circuit board cuts off the power supply of the electromagnetic system 200. Further, in the quick-acting mechanism 500, the auxiliary armature 520 is slidably disposed on the transmission frame 310, and it can move towards the auxiliary yoke 510 to be attracted to the auxiliary yoke 510 and can move in a direction away from the auxiliary yoke 510 to separate from the auxiliary yoke 510. Further, the quick-acting mechanism 500 further includes a trigger member 540 disposed on the transmission frame 310. The auxiliary armature 520 is in transmission cooperation with the trigger member 540 to drive the trigger member 540 to move. The trigger member 540 is used to trigger the auxiliary switch 560 to disconnect. The trigger member 540 is preferably made of an insulating material, and the insulating material can be an existing insulating material in the art. The auxiliary armature 520 triggers the auxiliary switch 560 through the trigger member 540, and the transmission is stable and reliable, which is convenient for the design of the transmission link and the internal layout. Moreover, the trigger member 540 is beneficial to increasing the insulation gap and creepage distance between the auxiliary switch 560 and the main circuit where the moving contact assembly is located (that is, the corresponding switching device d), avoiding short circuits between the power supply circuit of the electromagnetic coil and the main circuit where the moving contact assembly is located, ensuring the reliable operation of the quick-acting mechanism 500, and ensuring the reliability of the quick-acting device.

[0064] Further, the transmission frame 310 further includes a transmission frame bearing portion 3100 located between the coil assembly and the switching device d in the height direction of the circuit breaker. The main armature 230 of the electromagnetic system 200 is disposed on and fixedly connected to the transmission frame bearing portion 3100, so that the main armature 230 moves synchronously with the transmission frame 310. The auxiliary armature 520, the auxiliary reset member 530, and the auxiliary switch 560 of the quick-acting mechanism 500 are all disposed on the transmission frame bearing portion 3100. Further, the transmission frame 310 further includes a bearing portion installation bin 3100c corresponding to and cooperating with the quick-acting mechanism 500 one by one. The bearing portion installation bin 3100c is preferably disposed on the transmission frame bearing portion 3100. The auxiliary armature 520 and the auxiliary reset member 530 are both disposed in the bearing portion installation bin 3100c, and the auxiliary switch 560 is disposed outside the bearing portion installation bin 3100c. Further, the trigger member 540 is also disposed outside the bearing portion installation bin 3100c.

[0065] As an embodiment, the circuit breaker of this embodiment includes two or more groups of switching devices d arranged side by side in the width direction of the circuit breaker. The switching devices d correspond to and cooperate with the quick-acting mechanisms 500 one by one. Each quick-acting mechanism 500 is arranged side by side in the width direction of the circuit breaker. The adjacent two groups of quick-acting mechanisms 500 share an auxiliary switch 560, and the auxiliary switch 560 is arranged between the two bearing portion installation bins 3100c corresponding to and cooperating with the adjacent two groups of quick-acting mechanisms 500, which is beneficial to reducing the number of components of the circuit breaker and saving costs. Further, the adjacent two groups of quick-acting mechanisms 500 also share a trigger member 540 and a trigger member reset member 550 for driving the trigger member 540 to reset. The trigger member reset member 550 acts on the trigger member 540 to release its triggering state on the auxiliary switch 560, so that the auxiliary switch 560 is switched from the off state to the on state. Of course, each quick-acting mechanism 500 can also be provided with an independent auxiliary switch 560 and trigger member 540 that are not shared with other quick-acting mechanisms 500, which will result in an increase in the occupied space of the structure and an increase in production costs.

[0066] As an embodiment, the static contact 4220 is arranged and matched with the quick-acting mechanism 500 one by one. The two quick-acting mechanisms 500 matched with the static contact group 422 of the same set of switch devices d are respectively arranged on both sides of the main armature 230, which also means that the bearing part installation bins 3100c matched with the two quick-acting mechanisms 500 are also respectively arranged on both sides of the main armature 230. Further, in the length direction of the circuit breaker in this embodiment, among the multiple quick-acting mechanisms 500 located on the same side of the main armature 230, two adjacent quick-acting mechanisms 500 share an auxiliary switch 560, and this auxiliary switch 560 is located between the two bearing part installation bins 3100c respectively matched with the two adjacent quick-acting mechanisms 500. Specifically, in the circuit breaker of this embodiment, each set of switch devices d is correspondingly arranged and matched with two quick-acting mechanisms 500. That is to say, the circuit breaker includes three sets of switch devices d and six sets of quick-acting mechanisms 500. Among them, three sets of quick-acting mechanisms 500 are arranged side by side in the width direction of the circuit breaker and are located on one side of the main armature 230 in the length direction of the circuit breaker, and the other three sets of quick-acting mechanisms 500 are arranged side by side in the width direction of the circuit breaker and are located on the other side of the main armature 230 in the length direction of the circuit breaker. That is to say, the two sides of the main armature 230 in the length direction of the circuit breaker are respectively the first side and the second side. Three sets of quick-acting mechanisms 500 are located on the first side and are arranged side by side in the width direction of the circuit breaker, and the other three sets of quick-acting mechanisms 500 are located on the second side and are arranged side by side in the width direction of the circuit breaker.

[0067] The following will be combined with Figures 2-6 Figures 8-11 to further describe the operating device o.

[0068] As Figures 2-3 shown, the main yoke 220 of the operating device o is an E-shaped yoke, which includes three main yoke arms arranged side by side at intervals. The electromagnetic coil 210 is sleeved on the main yoke arm in the middle; the main armature 230 of the operating device o includes three main armature mating bosses arranged side by side at intervals, and the three main armature mating bosses are respectively in relative cooperation with the three main yoke arms; the main yoke 220 and the main armature 230 with the above structure enable the main armature 230 to act faster under the attraction of the coil assembly, and ensure the reliability of the attracted state of the main yoke 220 and the main armature 230.

[0069] As Figure 3 Figures 6As shown in 10-11, in the transmission frame 310, the transmission frame linkage part 3101 is arranged on one side of the transmission frame bearing part 3100, and the two sides of the transmission frame linkage part 3101 are respectively provided with arrangement spaces for arranging the contact mechanism 420, that is, the contact mechanism 420 can be arranged on both sides of the transmission frame linkage part 3101, and preferably one group of contact mechanisms 420 is arranged in each arrangement space, and of course two or more contact mechanisms 420 can also be arranged, that is, two groups or more contact mechanisms 420 can be arranged on each side of the transmission frame linkage part 310. Further, the transmission frame 310 includes at least two groups of transmission frame linkage parts 3101, that is, the transmission frame 310 includes two groups or more transmission frame linkage parts 3101, each transmission frame linkage part 3101 is preferably arranged side by side along the width direction of the circuit breaker and is respectively connected to the transmission frame bearing part 3100, and an arrangement space is arranged between two adjacent transmission frame linkage parts 3101, and one arrangement space is arranged on both sides of the two transmission frame linkage parts 3101 located at both ends. Further, the transmission frame linkage part 3101 is a straight plate structure. Specifically, in the circuit breaker of this embodiment, the transmission frame 310 includes two groups of transmission frame linkage parts 3101, the two groups of transmission frame linkage parts 3101 are arranged side by side along the width direction of the circuit breaker, a group of contact mechanisms 420 are arranged between the two groups of transmission frame linkage parts 3101, and a group of contact mechanisms 420 are arranged on both sides of the two groups of transmission frame linkage parts 3101, that is, the contact mechanisms 420 and the transmission frame linkage parts 3101 are arranged alternately in sequence, and each transmission frame linkage part 3101 and the moving contact assembly 421 of each contact mechanism 420 are connected to each other through the linkage rod 330. Further, each group of the transmission frame linkage parts 3101 is provided with a linkage part hole 31010 for the linkage rod 330 to pass through, and preferably, the two linkage part holes 31010 are arranged side by side and spaced along the length direction of the circuit breaker. The connection method of the transmission frame 310 and the moving contact assembly 421 is simple, easy to assemble, and simplified in operation.

[0070] Further, such as Figures 3-5As shown, the carrier portion 3100 of the drive frame includes an armature mounting groove 3100g provided on the side thereof facing the electromagnetic system 200; the operating mechanism o further includes at least one connecting plate 340, the main armature 230 is arranged in the armature mounting groove 3100g, the connecting plate 340 is inserted in the middle of the main armature 230 and both ends are respectively inserted in a pair of side walls of the armature mounting groove 3100. Specifically, each of the pair of side walls of the armature mounting groove 3100g is provided with a drive frame insertion hole 3100p, and both ends of the connecting plate 340 are respectively inserted into the two drive frame insertion holes 3100p. Further, the connecting plate 340 includes a connecting section 3401 and a mating section 3402, the two connecting sections 3401 are respectively connected to both ends of the mating section 3402, the two connecting sections 3401 are coplanar and offset to the same side of the mating section 3402, and the connecting section 3401 is arranged parallel to the mating section 3402; a main armature mounting hole is provided in the middle of the main armature 230, the connecting plate 340 is inserted in the main armature mounting hole, a part of the mating section 3402 and each connecting section 3401 is located in the main armature mounting hole, among a pair of side surfaces of the main armature mounting hole, one is in interference fit with the mating section 3402, and the other is in interference fit with the connecting section 3401, so as to ensure that the connecting plate 340 is reliably limited in the main armature mounting hole, and to prevent the separation of the main armature 230 and the drive frame 310 due to the connecting plate 340 coming out of the main armature mounting hole during the operation of the main armature 230 and the drive frame 310.

[0071] As Figure 3 and 8 shown, the operating device o further includes a drive frame guiding structure g corresponding to the drive frame linkage portion 3101 one by one, the drive frame guiding structure g is arranged on the housing structure for accommodating the contact mechanism 420, and the drive frame linkage portion 3101 is in sliding limit fit with the drive frame guiding structure g, that is, the drive frame linkage portion 3101 can slide relative to the drive frame guiding structure g and the limit between the drive frame linkage portion 3101 and the drive frame guiding structure g enables the drive frame linkage portion 3101 to only slide along the extending direction of the drive frame guiding structure g. Further, the drive frame guiding structure g is a drive frame guiding hole, and the drive frame linkage portion 3101 is slidably inserted into the drive frame guiding hole. Further, the drive frame guiding hole is arranged at the adjacent joint seam of two adjacent contact units c and is formed by the relative splicing of the linkage portion guiding grooves respectively arranged on the unit housings 400 of the two adjacent contact units c. As another embodiment, when the contact unit c does not have the unit housing 400, the adjacent contact units c are separated by a partition plate arranged in the outer housing 110, then the drive frame guiding structure g can be arranged on the partition plate of the outer housing 110 for separating the adjacent contact units c.

[0072] As Figures 2-6As shown in FIGS. 8-9 and 11, the carrier part bearing portion 3100 further includes a bearing portion installation bin 3100c corresponding to and cooperating with the quick-acting mechanism 500 one by one. The bearing portion installation bin 3100c includes an installation bin cavity 31000 provided therein. The auxiliary armature 520 and the auxiliary reset member 530 of the quick-acting mechanism 500 are arranged in the installation bin cavity 31000. Specifically, in the carrier 310 of this embodiment, three bearing portion installation bins 3100c are arranged side by side in the width direction of the circuit breaker and are located on one side of the armature installation groove 3100g in the length direction of the circuit breaker, and the other three bearing portion installation bins 3100c are arranged side by side in the width direction of the circuit breaker and are located on the other side of the armature installation groove 3100g in the length direction of the circuit breaker; that is, in the length direction of the circuit breaker of this embodiment, three bearing portion installation bins 3100c are provided on each side of the armature installation groove 3100g.

[0073] Further, two installation bin openings 31002 are provided on the bin wall of the bearing portion installation bin 3100c for the two auxiliary armature arms of the auxiliary armature 520 to pass through and cooperate with the auxiliary yoke 510. Further, the bearing portion installation bin 3100c includes a pair of installation bin side walls arranged oppositely and an installation bin bottom wall bent and connected to the two installation bin side walls at both ends. An installation bin opening 31002 is provided at the bent connection of each installation bin side wall and the installation bin bottom wall. As other embodiments, the two installation bin openings 31002 can also be provided at the ends where the installation bin bottom wall is connected to the two installation bin side walls respectively.

[0074] Further, the bearing portion installation bin 3100c further includes a yoke guiding portion 31001 provided in the bearing portion installation bin 3100c. The two yoke guiding portions 31001 are arranged side by side at intervals and cooperate with a pair of inner sides of the installation bin of the bearing portion installation bin 3100c (that is, the inner sides of the two installation bin side walls) to form two sets of yoke guiding and limiting structures. Each auxiliary armature arm is located between the yoke guiding portion 31001 of the corresponding yoke guiding and limiting structure and the inner side of the installation bin, so as to limit the movement of the auxiliary yoke 520 in the direction of the two auxiliary yoke arms arranged side by side, ensure the stable relative position of the auxiliary yoke 520 and the auxiliary armature 510, and thus achieve reliable cooperation.

[0075] Furthermore, a spring matching groove is provided on the outer side of the chamber wall of the bearing portion installation chamber 3100c, and a spring stopper is provided at one end of the spring matching groove. The trigger member reset spring is arranged in the spring matching groove, and one end is matched with the trigger member top plate 5400 of the trigger member 540 and the other end is matched with the spring stopper. Furthermore, the cross section of the spring matching groove is an arc. In two adjacent bearing portion installation chambers 3100c, spring matching grooves are provided on the outer sides of the two adjacent chamber walls. The two spring matching grooves are matched with each other to form a spring accommodating chamber for accommodating the trigger member reset spring, and the radial ends of the trigger member reset spring are respectively located in the two spring matching grooves.

[0076] like Figures 4-5 As shown, the moving contact assembly 421 further includes a contact support 4210, which is used to carry the moving contact 4211 and is used to be connected to the transmission frame 310 of the operating device o and driven to move. The operating device o can be connected to the contact support 4210 through two linkage rods 300.

[0077] like Figure 3 , 6 As shown in FIG. 7 , the contact unit c further includes a unit housing 400 , which serves as a housing structure for accommodating a contact mechanism 420 . Furthermore, the unit housing 400 is also used to accommodate an arc extinguishing chamber 410 .

[0078] Furthermore, a grid plate mounting structure for mounting a grid plate group of the arc extinguishing chamber 410 is further provided in the unit housing 400 . Preferably, two groups of grid plate mounting structures are arranged on both sides of the moving contact assembly 421 .

[0079] Further, the unit housing 400 further includes a unit housing guide hole 400g, which is used for the linkage rod 300 to be inserted into the contact unit c and to be transmission-connected with the corresponding moving contact assembly 421. Further, the unit housing guide hole 400g is arranged on the side wall of the unit housing 400 facing the transmission frame linkage part 3101 of the transmission frame 310, and the unit housing guide hole 400g is preferably a waist-shaped hole, which matches the moving track of the linkage rod 300.

[0080] Furthermore, the unit housing 400 further includes a unit housing insertion hole 400p, through which the auxiliary yoke arm of the auxiliary yoke 510 of the quick-action mechanism 500 passes to cooperate with the corresponding auxiliary armature 520. Furthermore, the unit housing insertion hole 400p is disposed on the side wall of the unit housing 400 facing the electromagnetic system 200.

[0081] Further, the unit housing 400 further includes a linkage part guiding groove which is arranged on the outer side of the unit housing 400 facing the linkage part 310 of the transmission frame 310; the linkage part guiding grooves of two adjacent unit housings 400 are oppositely joined together along the width direction of the circuit breaker to form a transmission frame guiding structure g.

[0082] For the circuit breaker of the present invention, the contact unit c is provided with an independent unit housing 400, which is beneficial to improving the insulation performance between phases of the circuit breaker, improving the internal insulation performance of the circuit breaker, thereby improving the current-carrying and breaking capacity of the circuit breaker. Moreover, the contact unit c being assembled as an independent module is beneficial to improving the assembly efficiency of the circuit breaker. Further, the outer housing 110 includes a housing cover 110c and a housing base 110b which are oppositely joined together along the height direction of the circuit breaker. An upper region s1 and a lower region s2 are formed in the space formed by the housing cover 110c and the housing base 110b. The upper region s1 is preferably arranged in the housing cover 110c, and the lower region s2 is preferably arranged in the housing base 110b. Further, the electromagnetic system 200 is arranged in the housing cover 110c, the transmission frame 310 extends from the housing cover 110c into the housing base 110b, and the switching device d is arranged in the housing base 110b.

[0083] Certainly, the circuit breaker of the present invention may not be provided with an independent unit housing 400, but instead a partition structure for separating each contact unit c is arranged in the outer housing 110. Correspondingly, the support guiding groove 400s, the static contact partition wall and the transmission frame guiding structure g are arranged on the partition structure: for example, the outer housing 110 may adopt an upper-middle-lower structure form, that is, it includes an upper shell, a middle shell and a lower shell which are sequentially joined together along the height direction of the circuit breaker. An upper region s1 is formed between the upper shell and the middle shell, and a lower region s2 is formed between the middle shell and the lower shell. Further, when the circuit breaker includes at least two groups (that is, two groups or more than two groups) of switching devices d, a partition structure for separating adjacent switching devices d is arranged in the lower region s2, and the partition structure is arranged on the middle shell and / or the lower shell; of course, those skilled in the art may adopt other deformed structures according to needs, which will not be elaborated here and all should fall within the protection scope of the present invention.

[0084] The following will be combined with Figures 2-7 Figures 8-11 to further illustrate the quick-acting mechanism 500.

[0085] The quick-acting mechanism 500 includes an auxiliary conductor, electromagnetic structures 510-520, a trigger 540, a trigger reset member 550, and an auxiliary switch 560. The electromagnetic structures 510-520 include an auxiliary yoke 510, an auxiliary armature 520, and an auxiliary reset member 530. The auxiliary conductor passes through the middle of the auxiliary yoke 520 and is used to be connected in series with the main circuit where the moving contact assembly 421 of the corresponding switching device d is located. The auxiliary yoke 510 cooperates with the auxiliary armature 520, and the auxiliary reset member 530 acts on the auxiliary armature 520 to separate it from the auxiliary yoke 510. That is, the auxiliary reset member 530 applies a force to the auxiliary armature 520, and this force causes the auxiliary armature 520 to have a tendency to move away from the auxiliary yoke 510. The trigger reset member 550 is used to drive the trigger 540 to reset so that the trigger 540 no longer triggers the auxiliary switch 560, thereby causing the auxiliary switch 560 to switch from the off state to the on state. When a short-circuit current flows through the auxiliary conductor, that is, when a short-circuit fault occurs in the circuit where the switching device d corresponding to the quick-acting mechanism 500 is located, the magnetic field generated by the auxiliary conductor attracts the auxiliary armature 520 through the auxiliary yoke 510 to make the auxiliary armature 520 move. The auxiliary armature 520 drives the trigger 540 to move, and the trigger 540 triggers the auxiliary switch 560 to open, that is, triggers the auxiliary switch 560 to switch from the on state to the off state. Further, the auxiliary armature 520 and the auxiliary reset member 530 are arranged in the mounting chamber 3100c of the bearing part, the trigger 540 and the auxiliary switch 560 are arranged outside the mounting chamber 3100c of the bearing part, and the trigger reset member 550 is also arranged outside the mounting chamber 3100c of the bearing part.

[0086] As another embodiment, the quick-acting mechanism 500 does not have the trigger reset member 550, but the auxiliary armature 520 drives the trigger 540 to reciprocate to trigger the auxiliary switch 560 or release the auxiliary switch 560 to cancel the triggering of the auxiliary switch 560.

[0087] Further, the auxiliary conductor is served by the static contact 4220 of the corresponding switching device d.

[0088] Further, the auxiliary switch 560 is preferably a microswitch. However, the auxiliary switch 560 is not limited to a microswitch only. For example, the auxiliary switch 560 can also be an auxiliary moving contact and an auxiliary static contact used in cooperation, and the auxiliary moving contact is in transmission cooperation with the trigger 540.

[0089] Further, the auxiliary armature 520 is disposed opposite to the auxiliary yoke 510, and the auxiliary armature 520 is linearly movable. Specifically, the auxiliary armature 520 is linearly movable along the height direction of the circuit breaker. The cooperation mode of the auxiliary armature and the auxiliary yoke facilitates the layout and assembly of the quick-acting mechanism 500, and simplifies the cooperation of the quick-acting mechanism 500 with the corresponding switch device d and the transmission frame 310. As another embodiment, the auxiliary armature 520 may also be rotatably disposed.

[0090] Specifically, the auxiliary armature 520 has a U-shaped structure, which includes an auxiliary armature bottom and auxiliary armature arms. The two auxiliary armature arms are opposite and are respectively bent and connected to both ends of the auxiliary armature bottom. The free ends of the two auxiliary armature arms are respectively engaged with the auxiliary yoke 510. The free end of the auxiliary armature arm passes through the wall of the corresponding bearing part installation bin 3100c to cooperate with the auxiliary yoke 520. Preferably, the free end of the auxiliary armature arm passes through the installation bin opening 31002 of the corresponding bearing part installation bin 3100c to cooperate with the auxiliary yoke 520. The auxiliary yoke 510 has a U-shaped structure, which includes an auxiliary yoke bottom and auxiliary yoke arms. The two auxiliary yoke arms are opposite and are respectively bent and connected to both ends of the auxiliary yoke bottom. The auxiliary conductor (served by the corresponding static contact 4220) passes through the middle of the auxiliary yoke 510, and is opposite to the auxiliary yoke bottom and is located between the two auxiliary yoke arms.

[0091] Further, the auxiliary reset member 530 is preferably an auxiliary reset spring. The auxiliary reset spring is located between the auxiliary armature bottom of the auxiliary armature 520 and the bottom wall of the bearing part installation bin 3100c, and both ends of the auxiliary reset spring are respectively engaged with the corresponding auxiliary armature bottom and the bearing part installation bin 3100c.

[0092] Further, the trigger member 540 is linearly movable or rotatably disposed. In this embodiment, it is preferably linearly movable, which saves more space. Further, the trigger member 540 is driven by the auxiliary armature arm of the auxiliary armature 520 to move. Specifically, the trigger member 540 is linearly movable along the height direction of the circuit breaker, and is driven by the auxiliary armature arm of the auxiliary armature 520 to move.

[0093] Specifically, the trigger member 540 includes a trigger member base plate 5401, a trigger member body 540b, and a trigger boss 5403. One end of the trigger member body 540b is connected to one side of the trigger member base plate 5401. The trigger boss 5403 is disposed on the side of the trigger member body 540b facing the auxiliary switch 560. At least one end of the trigger member base plate 5401 serves as a trigger member actuating portion 5404 and extends between an auxiliary armature arm of the auxiliary armature 520 and the auxiliary yoke 510, and is in transmission cooperation with the auxiliary armature arm. Further, when two or more sets of the quick-acting mechanisms 500 are arranged side by side along the direction of the two auxiliary yoke arms of the auxiliary yoke 510 (i.e., the width direction of the circuit breaker), the adjacent two sets of quick-acting mechanisms 500 share the trigger member 540 and the auxiliary switch 560, and the trigger member 540 and the auxiliary switch 560 are located between the adjacent two electromagnetic structures 510-520. Both ends of the trigger member base plate 5401 are trigger member actuating portions 5404 and cooperate with the auxiliary yokes 520 of the two quick-acting mechanisms 500 arranged side by side. Further, the trigger member body 540b includes a trigger member top plate 5400 and trigger member side plates 5402. The trigger member top plate 5402 is opposite to the trigger member base plate 5401. The two trigger member side plates 5402 are opposite to each other. One end is bent and connected to the trigger member top plate 5400 and the other end is respectively bent and connected to the trigger member base plate 5401. The trigger member top plate 5400, the trigger member base plate 5401, and the trigger member side plates 5402 form a rectangular frame structure as a whole. Preferably, both ends of the trigger member side plates 5402 protrude on both sides of the two trigger member side plates 5402 respectively as the two trigger member actuating portions 5404. The trigger boss 5403 is disposed on the outer side of one trigger member side plate 5402 (i.e., the side of the trigger member side plate 5402 away from the other trigger member side plate 5402). Further, the auxiliary member resetting member 550 is a trigger member reset spring. The trigger member reset spring is disposed in the middle of the trigger member body 540b, with one end cooperating with the trigger member top plate 5400 and the other end cooperating with the spring limiting platform of the corresponding bearing portion installation bin 3100c. Further, the auxiliary armature arm of the auxiliary armature 520 is provided with an avoidance notch for avoiding the trigger member actuating portion 5404. The trigger member actuating arm 5404 is located in the avoidance notch, so that the auxiliary armature arm of the auxiliary armature 50 can contact the auxiliary yoke 510, enabling the two to be reliably closed.

[0094] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which it is habitually placed during use. It is only for the convenience of description and does not indicate that the device or element referred to must have a specific orientation. Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating relative importance.

[0095] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. An operating device, which includes an electromagnetic system (200) and a transmission frame (310). The electromagnetic system (200) includes a coil assembly, a main armature (230), and a main reset member (320). The coil assembly includes a main yoke (220) that cooperates with the main armature (230) and an electromagnetic coil (210) sleeved on the main yoke (220). The main reset member (320) acts on the main armature (230) to give it a movement tendency to separate from the main yoke (220). It is characterized in that: The transmission frame (310) includes a transmission frame bearing part (3100) and at least one set of transmission frame linkage parts (3101). The electromagnetic system (200) and the transmission frame linkage parts (3101) are respectively located on both sides of the transmission frame bearing part (3100). The main armature (230) is arranged on the transmission frame bearing part (3100) and fixedly connected thereto, so that the main armature (230) and the transmission frame (310) move synchronously. Arrangement spaces for arranging the contact mechanism (420) are respectively provided on both sides of the transmission frame linkage parts (3101). The transmission frame linkage parts (3101) are used for transmission connection with the moving contact assembly (421) of the contact mechanism (420).

2. The operating device according to claim 1, It is characterized in that: The transmission frame (310) includes two or more sets of transmission frame linkage parts (3101) arranged side by side and respectively connected to the transmission frame bearing part (3100). An arrangement space is provided between adjacent two transmission frame linkage parts (3101), and an arrangement space is provided on each side of the two transmission frame linkage parts (3101) at both ends.

3. The operating device according to claim 2, It is characterized in that: The operating device further includes a transmission frame guiding structure (g) corresponding to each transmission frame linkage part (3101). The transmission frame guiding structure (g) is arranged on the housing structure for accommodating the contact mechanism (420), and the transmission frame linkage parts (3101) are in sliding limit fit with the transmission frame guiding structure (g).

4. The operating device according to claim 1, It is characterized in that: The transmission frame (310) includes two sets of transmission frame linkage parts (3101) arranged side by side and respectively connected to the transmission frame bearing part (3100). An arrangement space is provided between the two sets of transmission frame linkage parts (3101).

5. The operating device according to claim 1, It is characterized in that: The transmission frame bearing part (3100) includes an armature installation groove (3100g) provided on the side thereof facing the electromagnetic system (200); the operating device further includes at least one connecting plate (340). The main armature (230) is arranged in the armature installation groove (3100g), and the connecting plate (340) is inserted in the middle of the main armature (230) and the two ends are respectively inserted into a pair of side walls of the armature installation groove (3100g).

6. The operating device according to claim 5, It is characterized in that: The connecting plate (340) includes a connecting section (3401) and a mating section (3402). The two connecting sections (3401) are respectively connected to both ends of the mating section (3402). The two connecting sections (3401) are coplanar and offset to the same side of the mating section (3402). The connecting section (3401) is arranged parallel to the mating section (3402). A main armature mounting hole is provided in the middle of the main armature (230). The connecting plate (340) is inserted into the main armature mounting hole. Part of the mating section (3402) and each connecting section (3401) is located in the main armature mounting hole. Among a pair of side surfaces of the main armature mounting hole, one is in interference fit with the mating section (3402), and the other is in interference fit with the two connecting sections (3401).

7. The operating device according to claim 1, characterized in that: The main yoke (220) is an E-shaped yoke, which includes three main yoke arms arranged side by side at intervals. The electromagnetic coil (210) is sleeved on the main yoke arm in the middle. The main armature (230) includes three main armature mating bosses arranged side by side at intervals. The three main armature mating bosses are respectively in relative mating with the three main yoke arms.

8. The operating device according to claim 1, characterized in that: The operating device further includes a main reset member (320). The main reset member (320) is a main reset spring. Four groups of main reset springs are arranged around the coil assembly and are located at the four vertices of a rectangle. One end of each group of main reset springs is fixedly arranged and the other end is in cooperation with the transmission frame bearing part (3100).

9. The operating device according to claim 8, characterized in that: The transmission frame bearing part (3100) is provided with four groups of reset spring seats (3102) respectively cooperating with the four groups of main reset springs. One end of each group of main reset springs is fixedly arranged and the other end is arranged on the corresponding reset spring seat (3102). The two main reset members (320) are located on one side of the armature mounting groove (3100g) of the transmission frame bearing part (3100), and the other two main reset members (320) are located on the other side of the armature mounting groove (3100g); The operating device further includes a linkage rod (330). The linkage rod (330) is used to be inserted into the transmission frame linkage part (3301) and the moving contact assembly (421). The transmission frame linkage part (3301) is a straight plate-shaped structure.

10. A circuit breaker, characterized in that: The circuit breaker includes the operating device according to any one of claims 1-9.

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