Circuit breaker

Abstract

The utility model provides a circuit breaker, comprising a body provided with a handle and a tripping shaft, the handle is provided with an opening position and a closing position which are oppositely arranged, and the tripping shaft is provided with an initial position and a tripping position which are oppositely arranged; the shell is provided with an accommodating cavity; the driving assembly is arranged in the accommodating cavity, the driving assembly is in driving connection with the handle and the tripping shaft so as to drive the handle to move between the opening position and the closing position, and the driving assembly can drive the tripping shaft to move from the initial position to the tripping position; and the padlock structure is movably arranged at the opening, the padlock structure is provided with an avoiding position and a padlock position which are oppositely arranged, when the padlock structure is located at the avoiding position, the padlock structure and the driving assembly are separately arranged, and when the padlock structure is located at the padlock position, the padlock structure abuts against the driving assembly so as to limit the tripping shaft at the tripping position. Through the technical scheme provided by the invention, the problem that the risk of manual false closing is relatively high in the maintenance process of the circuit breaker in the prior art can be solved.

Description

Technical Field

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

[0002] A circuit breaker is a protective device commonly used in power systems, used to electrically disconnect a circuit when an overload or short circuit occurs.

[0003] When a circuit breaker fails, a worker needs to inspect the breaker and move the breaker handle to the open position. However, during the inspection, there is a risk of accidental closing of the breaker, which increases the risk of electric shock to the worker and fails to effectively ensure the worker's safety. Utility Model Content

[0004] The utility model provides a circuit breaker to solve the problem in the prior art that the risk of human-induced mistaken closing of the circuit breaker during maintenance is high.

[0005] The utility model provides a circuit breaker, which comprises: a body, wherein the body has a handle and a tripping shaft, the handle has an opening position and a closing position which are relatively arranged, and the tripping shaft has an initial position and a tripping position which are relatively arranged; a shell, wherein the shell has an accommodating cavity; a driving assembly, which is arranged in the accommodating cavity, the driving assembly is drivably connected to the handle and the tripping shaft to drive the handle to move between the opening position and the closing position, and the driving assembly can drive the tripping shaft to move from the initial position to the tripping position; a padlock structure, which is movably arranged in the accommodating cavity, the padlock structure has a relatively arranged avoidance position and a padlock position, and when the padlock structure is in the avoidance position, the padlock structure is separated from the driving assembly, and when the padlock structure is in the padlock position, the padlock structure abuts against the driving assembly to limit the tripping shaft to the tripping position.

[0006] Furthermore, a detection piece is provided on the padlock structure, and the circuit breaker also includes: a sensing element, which is provided in the accommodating cavity, and the sensing element cooperates with the detection piece to sense the position of the detection piece; a control system, which is electrically connected to the sensing element and the drive component, and the sensing element can transmit signals to the control system, and the control system can control the operation of the drive component.

[0007] Furthermore, the drive assembly includes: a drive structure; a first drive member, which is swingably arranged in the accommodating cavity, the drive structure is drivingly connected to the first drive member, the first drive member is provided with a connecting hole, and the connecting hole is sleeved on the tripping shaft; a second drive member, the drive structure is drivingly connected to the second drive member, and the second drive member is fixedly connected to the handle.

[0008] Furthermore, a limiting structure is provided between the padlock structure and the first driving member. When the padlock structure is located in the padlock position, the limiting structure can limit the trip shaft to the tripping position.

[0009] Furthermore, a limit rod is provided on the first driving member, and an abutment rod is provided on the padlock structure. When the padlock structure is in the padlock position and the tripping shaft is in the tripping position, the limit rod abuts against the abutment rod, and the limit rod and the abutment rod cooperate to form a limit structure.

[0010] Furthermore, the drive assembly also includes a gear assembly, the output end of the gear assembly has a first gear, the first gear is provided with a transmission protrusion, the transmission protrusion can abut against the first driving member, the driving structure drives the first driving member to swing through the transmission protrusion, the gear assembly also includes a transmission gear, the transmission gear is coaxially arranged with the first gear, and the transmission gear is fixedly connected to the first gear, the transmission gear and the second driving member are both non-full-tooth gears, and the transmission gear can engage with the second driving member.

[0011] Furthermore, a worm is provided on the rotating shaft of the driving structure, and the input end of the gear assembly has a worm wheel, and the worm is meshed with the worm wheel.

[0012] Furthermore, a first bevel gear is provided on the rotating shaft of the driving structure, and a second bevel gear is provided at the input end of the gear assembly, and the first bevel gear is meshed with the second bevel gear.

[0013] Furthermore, a first detection element is provided on the second driving member to detect the position of the second driving member, and a second detection element is provided on the transmission gear to detect the position of the transmission gear.

[0014] Furthermore, the shell has an opening, which is connected to the accommodating cavity. The padlock structure is rotatably arranged at the opening. The padlock structure has a fixing hole. When the padlock structure is in the padlock position, the fixing hole is located outside the shell. The fixing hole is used to fix the lock.

[0015] Applying the technical solution of the present invention, the main body has a handle and a trip shaft, and the driving assembly in the accommodating chamber is connected to the trip shaft, which can drive the handle to move from the closing position to the opening position, and the driving assembly can drive the trip shaft to move from the initial position to the tripping position. The padlock structure is arranged in the accommodating chamber. When the padlock structure is switched to the padlock position, the padlock structure can limit the trip shaft to the tripping position through the driving assembly. With this arrangement, the user cannot manually close the circuit breaker, and the handle cannot automatically close the circuit breaker. The handle is limited to the opening position. With this arrangement, when the staff or user inspects the circuit breaker, there is no possibility of human error in closing the circuit breaker, thereby avoiding electric shock to the staff or user, and effectively ensuring the safety of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 The figure shows a schematic structural diagram of a circuit breaker provided in the first embodiment of the present invention;

[0018] Figure 2 A schematic structural diagram of a circuit breaker provided in the first embodiment of the present invention is shown when the handle is in the opening position and the padlock structure is in the avoidance position;

[0019] Figure 3 A schematic structural diagram of a circuit breaker provided in the first embodiment of the present invention is shown when the handle is in the opening position and the padlock structure is in the padlock position;

[0020] Figure 4 A schematic diagram of the internal structure of a circuit breaker with a padlock structure provided in a first embodiment of the present invention located in a relief position is shown;

[0021] Figure 5 A schematic diagram of the internal structure of a circuit breaker with a padlock structure provided in the first embodiment of the present invention located in the padlock position is shown;

[0022] Figure 6 The following is a schematic structural diagram of a drive assembly provided in the first embodiment of the present invention;

[0023] Figure 7 It shows a schematic structural diagram of the first driving member provided in the first embodiment of the present utility model;

[0024] Figure 8 The figure shows a schematic structural diagram of the padlock structure provided by the first embodiment of the present invention;

[0025] Figure 9 The figure shows a schematic structural diagram of a circuit breaker provided in the second embodiment of the present invention;

[0026] Figure 10 The figure shows the internal structure of the circuit breaker provided by the second embodiment of the present invention;

[0027] Figure 11 The following is a schematic diagram showing the structure of the drive assembly provided in the second embodiment of the present invention;

[0028] Figure 12 It shows a structural schematic diagram of the driving assembly provided by the second embodiment of the present utility model from another perspective;

[0029] Figure 13A schematic diagram showing the structure of the drive structure provided by the second embodiment of the present utility model in cooperation with the first bevel gear is shown;

[0030] Figure 14 A schematic diagram showing the structure of the second gear and the second bevel gear provided in the second embodiment of the present invention;

[0031] Figure 15 A schematic diagram showing the structure of the third gear and the fourth gear provided in the second embodiment of the present utility model in cooperation with each other is shown;

[0032] Figure 16 A schematic diagram showing the structure of the first gear and the transmission gear provided in the second embodiment of the present utility model;

[0033] Figure 17 A structural schematic diagram of the second driving member provided in the second embodiment of the present utility model is shown.

[0034] The above drawings include the following reference numerals:

[0035] 10. Ontology;

[0036] 11. Handle; 111. Connecting shaft; 12. Tripping shaft;

[0037] 20. Housing;

[0038] 21. Accommodating cavity; 22. Opening;

[0039] 30. Drive assembly;

[0040] 31. Drive structure;

[0041] 32. First driving member; 321. Connecting hole; 322. Limiting rod;

[0042] 33. Second driving member; 331. First slot;

[0043] 34. Gear assembly;

[0044] 341, first gear; 3411, transmission protrusion;

[0045] 342, transmission gear; 3421, second slot;

[0046] 3431. Worm; 3432. Worm wheel;

[0047] 3441, first bevel gear; 3442, second bevel gear;

[0048] 345, second gear;

[0049] 346, third gear; 347, fourth gear;

[0050] 40. Padlock structure;

[0051] 41. Abutment rod; 42. Fixing hole; 43. Abutment protrusion. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0053] like Figures 1 to 6 As shown, the first embodiment of the present invention provides a circuit breaker, which includes a main body 10, a shell 20, a drive assembly 30 and a padlock structure 40. The main body 10 has a handle 11 and a trip shaft 12, the handle 11 has an opening position and a closing position that are relatively set, and the trip shaft 12 has an initial position and a trip position that are relatively set. The shell 20 has a accommodating cavity 21. The drive assembly 30 is arranged in the accommodating cavity 21, and the drive assembly 30 is driven and connected to the handle 11 and the trip shaft 12 to drive the handle 11 to move between the opening position and the closing position, and the drive assembly 30 can drive the trip shaft 12 to move from the initial position to the trip position. A padlock structure 40 is movably disposed within the accommodating chamber 21. The padlock structure 40 has a relative position, a relief position, and a padlock position. When the padlock structure 40 is in the relief position, the padlock structure 40 is separated from the drive assembly 30. When the padlock structure 40 is in the padlock position, the padlock structure 40 abuts against the drive assembly 30 to restrict the trip shaft 12 to the trip position. When the trip shaft 12 is in the trip position, the circuit breaker is instantly opened upon closing, i.e., the handle 11 cannot be fixed in the closed position.

[0054] Applying the technical solution of the present application, the main body 10 has a handle 11 and a trip shaft 12. The drive assembly 30 in the accommodating chamber 21 is driven and connected to the trip shaft 12, and can drive the handle 11 to move from the closing position to the opening position, and the drive assembly 30 can drive the trip shaft 12 to move from the initial position to the tripping position. A padlock structure 40 is arranged in the accommodating chamber 21. When the padlock structure 40 is switched to the padlock position, the padlock structure 40 can limit the trip shaft 12 to the tripping position through the drive assembly 30. With this arrangement, the user cannot manually close the circuit breaker, and the handle 11 cannot automatically close the circuit breaker. The handle 11 is limited to the opening position. With this arrangement, when the staff or user inspects the circuit breaker, there is no possibility of human error in closing the circuit breaker, thereby avoiding electric shock to the staff or user, and effectively ensuring the safety of the staff.

[0055] The padlock structure 40 is provided with a detection element. The circuit breaker also includes a sensing element and a control system. The sensing element is disposed within the accommodating cavity 21 and cooperates with the detection element to sense the position of the detection element. The control system is electrically connected to the sensing element and the drive assembly 30. The sensing element transmits signals to the control system, which in turn controls the operation of the drive assembly 30. The control system controls the drive assembly 30 to move the handle 11 from the closed position to the open position.

[0056] In this application, the circuit breaker is an intelligent circuit breaker. Intelligent circuit breaker tripping is divided into delayed tripping and instantaneous tripping. Delayed tripping can be determined as a normal trip based on the electrical parameters and switching status monitored by the intelligent circuit breaker. Instantaneous tripping is caused by leakage, short circuit, mechanical abnormality, or movement of the padlock structure 40 to the padlock position. When a circuit breaker mechanical abnormality is detected, the control system can determine whether the tripping is caused by a short circuit, leakage, or movement of the padlock structure 40 to the padlock position. If not, the tripping is determined to be caused by a mechanical abnormality.

[0057] When the padlock structure 40 is in the locked position, it triggers a signal change in the sensing element, which transmits the signal to the control system. The control system can inform the user that the circuit breaker is currently under maintenance. If a momentary trip occurs, the circuit breaker is considered to be operating normally. When the padlock structure 40 is in the avoidance position, the sensing element transmits a signal to the control system. If a momentary trip occurs, the circuit breaker is considered to be operating abnormally.

[0058] The intelligent circuit breaker provides more protection for the line. The above structure can effectively monitor the circuit breaker, allowing staff to promptly detect hidden dangers of the circuit breaker, thereby improving the stability of the circuit breaker and ensuring the safe and stable operation of the electrical system.

[0059] like Figures 4 to 7 As shown, the drive assembly 30 includes a drive structure 31, a first drive member 32 and a second drive member 33. The first drive member 32 is swingably arranged in the accommodating chamber 21, and the drive structure 31 is drive-connected to the first drive member 32. The first drive member 32 is provided with a connecting hole 321, and the connecting hole 321 is sleeved on the tripping shaft 12. The drive structure 31 is drive-connected to the second drive member 33, and the second drive member 33 is fixedly connected to the handle 11. With such an arrangement, the drive structure 31 can work by driving the first drive member 32 and the second drive member 33, so that the handle 11 and the tripping shaft 12 can move synchronously, that is, when the tripping shaft 12 moves to the tripping position, the handle 11 moves from the closing position to the opening position. With such an arrangement, the linkage between the tripping shaft 12 and the handle 11 can be ensured, while the use of the drive structure 31 can be reduced, and the structure is simple and the operation is convenient.

[0060] Optionally, the driving structure 31 may be a reduction motor.

[0061] like Figure 5 As shown, a limiting structure is provided between the padlock structure 40 and the first drive member 32. When the padlock structure 40 is in the padlock position, the limiting structure can limit the trip shaft 12 to the trip position. This arrangement can effectively limit the position of the trip shaft 12 and prevent the trip shaft 12 from switching to the initial position.

[0062] like Figure 7 and Figure 8 As shown, a limiting rod 322 is provided on the first driving member 32, and an abutting rod 41 is provided on the padlock structure 40. When the padlock structure 40 is in the padlock position and the tripping shaft 12 is in the tripping position, the limiting rod 322 abuts against the abutting rod 41, and the limiting rod 322 and the abutting rod 41 cooperate to form a limiting structure. This arrangement simplifies the structure of the limiting structure, facilitates the processing of the first driving member 32 and the padlock structure 40, and can ensure the limiting effect of the limiting structure.

[0063] In this application, the detection member is provided on the abutting rod 41 .

[0064] like Figure 6 As shown, the drive assembly 30 further includes a gear assembly 34. The output end of the gear assembly 34 includes a first gear 341. The first gear 341 is provided with a transmission protrusion 3411. The transmission protrusion 3411 can abut against the first driving member 32. The drive structure 31 drives the first driving member 32 to swing via the transmission protrusion 3411. This arrangement facilitates driving the first driving member 32 to swing, and the structure is simple, making it easier to process the first driving member 32.

[0065] Furthermore, the gear assembly 34 also includes a transmission gear 342, which is coaxially arranged with the first gear 341 and fixedly connected to the first gear 341. In other words, the transmission gear 342 and the first gear 341 form a duplex gear. Both the transmission gear 342 and the second drive member 33 are non-fully toothed gears, and the transmission gear 342 is capable of meshing with the second drive member 33. With this arrangement, when the drive structure 31 drives the handle 11 to rotate via the gear assembly 34, the transmission gear 342 meshes with the second drive member 33. When the handle 11 is rotated to the open position, the transmission gear 342 and the second drive member 33 no longer mesh. At this point, when a staff member manually rotates the handle 11, the second drive member 33 also does not mesh with the transmission gear 342.

[0066] like Figure 6As shown, a worm 3431 is provided on the rotating shaft of the drive structure 31, and a worm wheel 3432 is provided at the input end of the gear assembly 34. The worm 3431 meshes with the worm wheel 3432. Because the worm wheel 3432 and the worm 3431 are self-locking, this arrangement can prevent the handle 11 from shaking when it is rotated to the open position, thereby ensuring the stability of the handle 11.

[0067] The second driver 33 is provided with a first detection element to detect its position, and thus the closing and opening status of the circuit breaker. The first detection element is electrically connected to the control system and can transmit signals to the control system. Furthermore, the second driver 33 has a square hole at its center, and the handle 11 has a connecting shaft 111, to which the square hole is connected.

[0068] like Figure 3 and Figure 5 As shown, the housing 20 has an opening 22 that communicates with the accommodating chamber 21. A padlock structure 40 is rotatably disposed at the opening 22. The padlock structure 40 has a fixing hole 42. When the padlock structure 40 is in the padlocked position, the fixing hole 42 is located outside the housing 20 and is used to secure the lock. This arrangement facilitates operator securing of the lock, has a simple structure, and is easy to operate.

[0069] like Figure 8 As shown, abutment protrusion 43 is provided on one side of the padlock structure 40, and the abutment protrusion 43 abuts against the inner wall of the opening 22. This arrangement enables a gap to be provided between the side wall of the padlock structure 40 and the inner wall of the opening 22, making it easier for staff to rotate the padlock structure 40.

[0070] like Figure 5 and Figure 6 As shown, the gear assembly 34 further includes a second gear 345 , a third gear 346 and a fourth gear 347 .

[0071] The worm gear 3432 and the second gear 345 are coaxially arranged and fixedly connected to each other, that is, the worm gear 3432 and the second gear 345 are matched to form a double gear.

[0072] The third gear 346 and the fourth gear 347 are coaxially arranged and fixedly connected, that is, the third gear 346 and the fourth gear 347 are matched to form a double gear. The second gear 345 is meshed with the third gear 346, and the fourth gear 347 is meshed with the first gear 341.

[0073] like Figures 9 to 17As shown, the second embodiment of the present invention provides a circuit breaker, which is different from the first embodiment in that a first bevel gear 3441 is provided on the rotating shaft of the driving structure 31, and the input end of the gear assembly 34 has a second bevel gear 3442, and the first bevel gear 3441 is meshed with the second bevel gear 3442.

[0074] like Figure 9 As shown, if an abnormal power outage or damage to the first and second detection elements causes the second drive member 33 and transmission gear 342 to be incorrectly positioned, the handle 11 may become stuck between the closed and open positions. Due to the influence of traditional circuit breakers, users may manually push the handle 11 to position it between the closed and open positions when encountering this situation. In the first embodiment, due to the self-locking properties of the worm gear 3432 and worm 3431, manually pushing the handle 11 may damage the circuit breaker, affecting normal user experience and reducing the user experience.

[0075] In this embodiment, when the handle 11 is stuck between the closing position and the opening position, since the first bevel gear 3441 and the second bevel gear 3442 will not self-lock, the user can manually turn the handle 11, and the handle 11 can still be manually reset to the normal position. This setting can respond to abnormal situations in a timely manner, while avoiding damage to the circuit breaker, increasing the service life of the circuit breaker, and thereby improving the user experience.

[0076] like Figure 17 As shown, the structure of the second driving member 33 of the second embodiment is the same as that of the second driving member 33 provided in the first embodiment. The second driving member 33 is provided with a first slot 331 for accommodating the first detection element. Such a configuration can prevent the first detection element from falling off.

[0077] The transmission gear 342 is provided with a second detection element to detect the position of the transmission gear 342 , that is, it can detect the position of the transmission gear 342 during automatic opening and closing.

[0078] like Figure 16 As shown, the structure of the transmission gear 342 of the second embodiment is the same as that of the transmission gear 342 provided in the first embodiment. The transmission gear 342 is provided with a second slot 3421 for accommodating the second detection element. Such a configuration can prevent the second detection element from falling off.

[0079] like Figure 11 and Figure 12 In this embodiment, the axis of the first bevel gear 3441 is perpendicular to the axis of the second bevel gear 3442, which facilitates the subsequent layout of the gear assembly 34 and the motor, reduces the volume occupied by the gear assembly 34, and reduces the difficulty of the structural design of the gear assembly 34.

[0080] like Figure 13 As shown, the driving structure 31 is a reduction motor, and the transmission ratio of the reduction motor is adjustable, generally the transmission ratio is 20 to 30, which can ensure a large output torque, and is suitable for the structure of 1P to 4P circuit breakers.

[0081] In this embodiment, the gear assembly 34 further includes a second gear 345 , a third gear 346 and a fourth gear 347 . The first gear 341 , the second gear 345 , the third gear 346 and the fourth gear 347 are involute gears.

[0082] The second bevel gear 3442 is coaxially arranged with the second gear 345 , and the second bevel gear 3442 is fixedly connected with the second gear 345 , that is, the worm gear 3432 and the second gear 345 are matched to form a double gear.

[0083] The third gear 346 and the fourth gear 347 are coaxially arranged and fixedly connected, that is, the third gear 346 and the fourth gear 347 are matched to form a double gear. The second gear 345 is meshed with the third gear 346, and the fourth gear 347 is meshed with the first gear 341.

[0084] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0085] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0086] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0087] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0088] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0089] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A circuit breaker, characterized in that: The circuit breaker comprises: A body (10), the body (10) having a handle (11) and a tripping shaft (12), the handle (11) having an opening position and a closing position that are relatively arranged, and the tripping shaft (12) having an initial position and a tripping position that are relatively arranged; A housing (20), wherein the housing (20) has a receiving cavity (21); A drive assembly (30) is disposed in the accommodating cavity (21), the drive assembly (30) being drive-connected to the handle (11) and the trip shaft (12) to drive the handle (11) to move between the opening position and the closing position, and the drive assembly (30) is capable of driving the trip shaft (12) to move from an initial position to a trip position; A padlock structure (40) is movably arranged in the accommodating cavity (21), and the padlock structure (40) has a relatively arranged avoidance position and a padlock position. When the padlock structure (40) is located in the avoidance position, the padlock structure (40) is separated from the drive assembly (30). When the padlock structure (40) is located in the padlock position, the padlock structure (40) abuts against the drive assembly (30) to limit the tripping shaft (12) to the tripping position.

2. The circuit breaker according to claim 1, wherein: The padlock structure (40) is provided with a detection member, and the circuit breaker further comprises: A sensing element is disposed in the accommodating cavity (21), and the sensing element cooperates with the detection element to sense the position of the detection element; A control system is electrically connected to the sensing element and the driving component (30), wherein the sensing element can transmit a signal to the control system, and the control system can control the operation of the driving component (30).

3. The circuit breaker according to claim 1, wherein: The drive assembly (30) comprises: Drive structure (31); A first driving member (32) is swingably disposed in the accommodating cavity (21), the driving structure (31) is drivingly connected to the first driving member (32), and the first driving member (32) is provided with a connecting hole (321), and the connecting hole (321) is sleeved on the tripping shaft (12); A second driving member (33), the driving structure (31) is drivingly connected to the second driving member (33), and the second driving member (33) is fixedly connected to the handle (11).

4. The circuit breaker according to claim 3, characterized in that A limiting structure is provided between the padlock structure (40) and the first driving member (32); when the padlock structure (40) is located in the padlock position, the limiting structure can limit the tripping shaft (12) to the tripping position.

5. The circuit breaker according to claim 4, characterized in that A limiting rod (322) is provided on the first driving member (32), and an abutting rod (41) is provided on the padlock structure (40). When the padlock structure (40) is located in the padlock position and the tripping shaft (12) is in the tripping position, the limiting rod (322) abuts against the abutting rod (41), and the limiting rod (322) cooperates with the abutting rod (41) to form the limiting structure.

6. The circuit breaker according to claim 5, characterized in that The driving assembly (30) further includes a gear assembly (34), the output end of the gear assembly (34) having a first gear (341), a transmission protrusion (3411) provided on the first gear (341), the transmission protrusion (3411) being capable of abutting against the first driving member (32), the driving structure (31) driving the first driving member (32) to swing via the transmission protrusion (3411), the gear assembly (34) further including a transmission gear (342), the transmission gear (342) being coaxially arranged with the first gear (341), and the transmission gear (342) being fixedly connected to the first gear (341), the transmission gear (342) and the second driving member (33) being both non-full-tooth gears, and the transmission gear (342) being capable of meshing with the second driving member (33).

7. The circuit breaker according to claim 6, characterized in that A worm (3431) is provided on the rotating shaft of the driving structure (31), and an input end of the gear assembly (34) has a worm wheel (3432), and the worm (3431) is meshed with the worm wheel (3432).

8. The circuit breaker according to claim 6, wherein: A first bevel gear (3441) is provided on the rotating shaft of the driving structure (31), and a second bevel gear (3442) is provided at the input end of the gear assembly (34), and the first bevel gear (3441) is meshed with the second bevel gear (3442).

9. The circuit breaker according to claim 6, characterized in that The second driving member (33) is provided with a first detection element for detecting the position of the second driving member (33), and the transmission gear (342) is provided with a second detection element for detecting the position of the transmission gear (342).

10. The circuit breaker according to claim 1, wherein: The housing (20) has an opening (22), the opening (22) is communicated with the accommodating cavity (21), the padlock structure (40) is rotatably arranged at the opening (22), the padlock structure (40) has a fixing hole (42), when the padlock structure (40) is located in the padlock position, the fixing hole (42) is located outside the housing (20), and the fixing hole (42) is used to fix the lock.

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