Opening and closing driving device and circuit breaker

Abstract

The utility model relates to the technical field of low-voltage electric appliances, and particularly discloses a switch-on and switch-off driving device and a circuit breaker, and the device comprises a driving motor, a transmission gear set, and an operation handle. A rotating part is arranged on the operating handle, and a handle umbrella-shaped tooth group is arranged in the circumferential direction of the rotating part; the transmission gear set comprises a straight gear set connected with the driving shaft and an output bevel gear meshed with the handle bevel gear set, and the transmission gear set drives the operating handle to rotate through the output bevel gear and the handle bevel gear set. The assembly size of the electric driving device can be effectively reduced, the internal layout of the circuit breaker can be optimized, and the size reduction of the circuit breaker is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a switching drive device and a circuit breaker. Background Art

[0002] Current circuit breakers typically feature an operating handle linked to the moving contact, allowing manual opening and closing of the moving contact. Alternatively, an electric drive can be used to electrically control the opening and closing of the operating handle. To achieve both manual and electric opening and closing functions, existing technologies typically require complex transmission assemblies, which occupy a significant amount of assembly space within the circuit breaker housing. This complicates the layout of other functional components within the circuit breaker and hinders its miniaturization. Utility Model Content

[0003] The purpose of the present application is to provide a switching drive device and a circuit breaker, which can effectively reduce the assembly volume of the electric drive device, optimize the internal layout of the circuit breaker, and facilitate the reduction of the volume of the circuit breaker.

[0004] The embodiment of the present application is implemented as follows:

[0005] In the first aspect, an embodiment of the present application provides a switching drive device, comprising a driving motor, a transmission gear set and an operating handle linked to a moving contact; the operating handle is provided with a rotating portion rotatably arranged in a circuit breaker housing, and a handle umbrella gear set is provided on the circumference of the rotating portion; the driving shaft of the driving motor extends in a direction perpendicular to the rotation axis of the rotating portion; the transmission gear set comprises a spur gear set connected to the driving shaft and an output umbrella gear; the handle umbrella gear set is engaged with the output umbrella gear; the transmission gear set drives the operating handle to rotate through the output umbrella gear and the handle umbrella gear set to realize the switching operation of the moving contact.

[0006] As an optional embodiment, the handle umbrella tooth group includes closing umbrella teeth and tripping umbrella teeth; the closing umbrella teeth and the tripping umbrella teeth are arranged on both sides of the rotation plane of the rotating part; when the output umbrella teeth and the closing umbrella teeth are engaged and transmitted, the moving contact is closed; when the output umbrella teeth and the tripping umbrella teeth are engaged and transmitted, the moving contact is opened.

[0007] As an optional embodiment, an intermediate space is formed between the closing umbrella tooth and the tripping umbrella tooth, and the output umbrella tooth is located in the intermediate space, creating a gap with both the closing umbrella tooth and the tripping umbrella tooth. The operator can manually drive the operating handle to realize the opening and closing of the moving contact.

[0008] As an optional embodiment, the spur gear set includes an input gear, a transmission gear and at least one reduction gear, and the reduction gear is provided between the input gear and the transmission gear for linking the input gear and the transmission gear.

[0009] As an optional embodiment, there are three reduction gears that are meshed with each other and stacked along the extension direction of the drive shaft.

[0010] As an optional implementation, the reduction gear includes a first gear and a second gear that are coaxially arranged; the diameter of the second gear is smaller than that of the first gear.

[0011] As an optional embodiment, the transmission gear includes a third gear meshing with the second gear; the output bevel gear is arranged on the surface of the third gear close to the rotating part and is integrally formed with the third gear.

[0012] As an optional embodiment, an extending direction of the driving shaft of the driving motor forms a preset angle with a width direction of the circuit breaker housing; or the driving shaft of the driving motor extends along the width direction of the circuit breaker housing.

[0013] As an optional implementation, two position detection modules are provided in the circuit breaker housing; one position detection module is used to detect the operating handle in the closing position, and the other position detection module is used to detect the operating handle in the opening position.

[0014] In the second aspect, an embodiment of the present application provides a circuit breaker, comprising a circuit breaker housing, a moving contact, a static contact and the above-mentioned opening and closing drive device; wherein, a connecting rod linked to the moving contact is provided on the operating handle, and the operating handle is driven by the connecting rod to drive the moving contact to open and close.

[0015] The beneficial effects of the embodiments of the present application include:

[0016] In the first aspect, an embodiment of the present application provides a switching drive device, comprising a driving motor, a transmission gear set, and an operating handle linked to a moving contact. The operating handle of the embodiment of the present application is provided with a rotating portion rotatably arranged in the circuit breaker housing, and a handle umbrella gear set is provided on the circumference of the rotating portion. The staff can manually drive the operating handle to rotate it around the rotating portion. The extension direction of the driving shaft of the driving motor of the embodiment of the present application is perpendicular to the rotation axis of the rotating portion; the transmission gear set includes a spur gear set connected to the driving shaft and output umbrella gears; the spur gear sets in the transmission gear set of the embodiment of the present application are stacked in sequence along the extension direction of the driving shaft, which can effectively reduce the volume of the transmission gear set. The transmission gear handle umbrella gear set of the embodiment of the present application is meshed with the output umbrella gear, and the transmission gear transmission gear set drives the operating handle to rotate through the output umbrella gear and the handle umbrella gear set to realize the switching operation of the moving contact. The operating handle of the embodiment of the present application is in direct contact with the transmission gear set to realize meshing transmission. Therefore, the drive motor, transmission gear set and operating handle can be assembled together, and the installation of the entire opening and closing drive device can be realized in a small space, effectively reducing the assembly volume of the electric drive device, and can optimize the internal layout of the circuit breaker, which is conducive to reducing the volume of the circuit breaker.

[0017] In a second aspect, an embodiment of the present application provides a circuit breaker, comprising a circuit breaker housing, a moving contact, a stationary contact, and the aforementioned opening and closing drive device; wherein, a connecting rod linked to the moving contact is provided on the operating handle, and the operating handle is driven to drive the moving contact to open and close via the connecting rod. The embodiment of the present application adopts the aforementioned opening and closing drive device, which can not only realize electric opening and closing control but also realize manual opening and closing control. In addition, the opening and closing drive device provided by the embodiment of the present application has the advantages of small size and high transmission efficiency, which not only optimizes the internal assembly of the circuit breaker and effectively reduces the size of the circuit breaker, but also realizes precise control of opening and closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic structural diagram of a circuit breaker according to an embodiment of the present application;

[0020] Figure 2 This is one of the structural schematic diagrams of the opening and closing drive device according to an embodiment of the present application;

[0021] Figure 3 This is the second structural diagram of the opening and closing drive device according to the embodiment of the present application;

[0022] Figure 4 This is the third structural diagram of the opening and closing drive device according to the embodiment of the present application;

[0023] Figure 5 This is the fourth structural diagram of the opening and closing drive device according to the embodiment of the present application;

[0024] Figure 6 This is the fifth structural diagram of the opening and closing drive device according to the embodiment of the present application;

[0025] Figure 7 This is the sixth structural diagram of the opening and closing drive device according to the embodiment of the present application.

[0026] icon:

[0027] 100-drive motor; 101-transmission gear set; 102-moving contact; 103-operating handle; 104-circuit breaker housing; 105-rotating part; 106-handle umbrella gear set; 107-input gear; 108-transmission gear; 109-output umbrella gear; 110-closing umbrella gear; 111-tripping umbrella gear; 112-rotating plane; 113-middle space; 114-reduction gear; 115-first gear; 116-second gear; 117-width direction. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0030] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," "third," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0031] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0032] Current circuit breakers typically include an operating handle 103 that is linked to the movable contact 102. The operating handle 103 allows for manual opening and closing of the movable contact 102. Alternatively, an electric drive device can be used to electrically control the opening and closing of the operating handle 103. To achieve both manual and electric opening and closing functions, conventional technologies typically require complex transmission components, which occupy a significant amount of assembly space within the circuit breaker housing 104. This complicates the layout of other functional components within the circuit breaker and hinders the miniaturization of the circuit breaker.

[0033] In order to solve the above technical problems, the embodiments of the present application provide a switching drive device and a circuit breaker.

[0034] Reference Figure 1 、 Figure 2 as well as Figure 3 As shown, an embodiment of the present application provides a switching drive device, including a driving motor 100, a transmission gear set 101 and an operating handle 103 linked to a moving contact 102; the operating handle 103 is provided with a rotating portion 105 rotatably arranged in a circuit breaker housing 104, and the rotating portion 105 is circumferentially provided with a handle umbrella gear set 106; the driving shaft extension direction of the driving motor 100 is perpendicular to the rotation axis of the rotating portion 105; the transmission gear set 101 includes a spur gear set connected to the driving shaft and an output umbrella gear 109. Among them, the spur gear group includes an input gear 107 and a transmission gear 108 linked to the input gear 107; the plane where the input gear 107 and the transmission gear 108 are located is perpendicular to the drive shaft; the side of the transmission gear 108 close to the rotating part 105 is provided with an output umbrella tooth 109 that meshes with the handle umbrella tooth group 106. The driving motor 100 drives the transmission gear 108 to rotate, and drives the operating handle 103 to rotate through the output umbrella tooth 109 and the handle umbrella tooth group 106, thereby realizing the opening and closing operation of the moving contact 102.

[0035] It should be noted that in the embodiment of the present application, the drive shaft of the drive motor 100 extends in a direction perpendicular to the rotation axis of the rotating portion 105. The rotation axis of the rotating portion 105 extends along the thickness of the circuit breaker housing 104, while the drive shaft of the drive motor 100 is arranged on the length and width plane of the circuit breaker housing 104. It should be noted that the purpose is to ensure that the longest dimension of the physical structure of the drive motor 100 extends in a direction parallel to the length and width plane of the circuit breaker housing 104, so that the overall thickness of the circuit breaker housing 104 can be slightly greater than or close to the thickness of the drive motor 100. In other words, the circuit breaker as a whole can be thinner, which facilitates the assembly of the circuit breaker single-pole module in the transfer switch.

[0036] It should be noted that the rotating portion 105 is provided with a handle bevel gear set 106 on its circumference, and the side of the transmission gear 108 near the rotating portion 105 is provided with output bevel gears 109 that mesh with the handle bevel gear set 106. The drive motor 100 drives the transmission gear 108 to rotate, and the output bevel gears 109 and the handle bevel gear set 106 drive the operating handle 103 to rotate, thereby achieving the opening and closing operations of the moving contact 102. At this time, the drive motor 100 can drive the rotating portion 105 to rotate through the transmission gear 108, and the rotating portion 105 of the operating handle 103 can drive the moving contact 102 to achieve the opening and closing operations.

[0037] Specifically, refer to Figure 3 As shown, the handle umbrella tooth group 106 includes a closing umbrella tooth 110 and a tripping umbrella tooth 111; the closing umbrella tooth 110 and the tripping umbrella tooth 111 are arranged on both sides of the rotating plane 112 of the rotating part 105; when the output umbrella tooth 109 is engaged with the closing umbrella tooth 110, the moving contact 102 is closed; when the output umbrella tooth 109 is engaged with the tripping umbrella tooth 111, the moving contact 102 is opened.

[0038] in, Figure 4 It is a structural diagram of the output umbrella gear 109 and the closing umbrella gear 110 meshing and driving to close the circuit breaker. Figure 5 It is a structural diagram of the closing of the circuit breaker after the output umbrella gear 109 and the closing umbrella gear 110 are engaged and transmitted. Figure 6 It is a structural diagram of the output umbrella gear 109 and the trip umbrella gear 111 contact transmission to open the circuit breaker. Figure 7 It is a structural diagram showing that the circuit breaker is opened after the output umbrella-shaped gear 109 and the trip umbrella-shaped gear 111 are in contact and transmission.

[0039] It should be noted that the drive motor 100 can rotate in one direction so that the closing umbrella teeth 110 and the tripping umbrella teeth 111 respectively realize opening and closing control, or it can rotate in two directions to realize opening and closing control. Those skilled in the art can make a choice according to their needs.

[0040] For example, the drive shaft rotates, driving the output bevel gears 109. When the output bevel gears 109 engage with the closing bevel gears 110, the movable contact 102 enters the closing process. After closing is complete, the output bevel gears 109 disengage from the closing bevel gears 110. The drive shaft can continue to rotate in the previous direction until the output bevel gears 109 contact the closing bevel gears 110, driving the operating handle 103 to rotate in the opening direction, opening the movable contact 102. If the switch needs to be closed again, the drive motor 100 can be energized to continue rotating in the previous direction to complete the closing operation.

[0041] It should be noted that the unidirectional rotation control circuit is simple and does not require an integrated reversing circuit in the control circuit, which not only simplifies the structure but also effectively improves the reliability of the control module.

[0042] Further, refer to Figure 3 As shown, in the embodiment of the present application, an intermediate space 113 is formed between the closing umbrella tooth 110 and the tripping umbrella tooth 111, and the output umbrella tooth 109 is located in the intermediate space 113, creating a gap with both the closing umbrella tooth 110 and the tripping umbrella tooth 111. The operator can manually drive the operating handle 103 to realize the opening and closing of the moving contact 102.

[0043] It should be noted that the closing bevel gears 110 and the tripping bevel gears 111 are located on either side of the rotation plane 112 of the operating handle 103, forming a gap 113 between the closing bevel gears 110 and the tripping bevel gears 111. When the output bevel gears 109 rotate to the gap 113, the output bevel gears 109 are disengaged from the rotating portion 105 of the operating handle 103, effectively eliminating their meshing connection. At this point, the operator can operate the operating handle 103 to open or close the circuit breaker.

[0044] After electric closing, the output bevel gear 109 stops at the intermediate space 113 on one side of the rotation axis of the transmission gear 108. After electric opening, the output bevel gear 109 stops at the intermediate space 113 on the other side of the rotation axis of the transmission gear 108. This allows both manual closing after electric opening and manual opening after electric closing.

[0045] It should be noted that, referring to Figure 2 、 Figure 3 As shown, the output bevel gear 109, the closing bevel gear 110, and the tripping bevel gear 111 all have only partial teeth. In other words, the output bevel gear 109 is not arranged in a circular structure around 360° of the circumference, but is only arranged in an arc shape with a certain circumferential angle continuously along the circumference, as shown in the accompanying drawings.

[0046] Similarly, the closed bevel gears 110 are also continuously provided on the rotating portion 105 at a certain circumferential angle. The exemplary closed bevel gears 110 form an arc structure with a central angle of 40-60°.

[0047] The tripping umbrella-shaped tooth 111 may be provided with only one bevel tooth that can mesh with the output umbrella-shaped tooth 109 , and those skilled in the art may configure the same as required.

[0048] It should be noted that the tripping umbrella gear 111 , the closing umbrella gear 110 and the output umbrella gear 109 are all bevel gear structures. The specific number of bevel gears can be set by those skilled in the art as needed and is not particularly limited here.

[0049] An embodiment of the present application provides a circuit breaker opening and closing drive device, comprising a drive motor 100, a transmission gear set 101, and an operating handle 103 linked to a moving contact 102. The operating handle 103 of the present application embodiment is provided with a rotating portion 105 rotatably disposed within a circuit breaker housing 104. A handle bevel gear set 106 is circumferentially disposed on the rotating portion 105. A worker can manually drive the operating handle 103 to rotate it about the rotating portion 105.

[0050] In the embodiment of the present application, the extension direction of the driving shaft of the driving motor 100 is perpendicular to the rotation axis of the rotating part 105; the spur gear set includes an input gear 107 connected to the driving shaft and a transmission gear 108 connected to the input gear 107; the plane where the input gear 107 and the transmission gear 108 are located is perpendicular to the driving shaft; the gears in the transmission gear set 101 of the embodiment of the present application are stacked in sequence along the extension direction of the driving shaft, which can effectively reduce the volume of the transmission gear set 101.

[0051] In the embodiment of the present application, the side of the transmission gear 108 near the rotating portion 105 is provided with output bevel teeth 109 that mesh with the handle bevel gear set 106. The drive motor 100 drives the transmission gear 108 to rotate, and drives the operating handle 103 to rotate through the output bevel teeth 109 and the handle bevel gear set 106, thereby realizing the opening and closing operations of the moving contact 102. The operating handle 103 of the embodiment of the present application is in direct contact with the transmission gear set 101 to achieve meshing transmission. Therefore, the drive motor 100, the transmission gear set 101, and the operating handle 103 can be assembled centrally, realizing the installation of the entire opening and closing drive device in a small space, effectively reducing the assembly volume of the electric drive device, optimizing the internal layout of the circuit breaker, and facilitating the reduction of the volume of the circuit breaker.

[0052] Reference Figure 2 As shown, as an optional embodiment, the spur gear set further includes at least one reduction gear 114 , which is provided between the input gear 107 and the transmission gear 108 for linking the input gear 107 and the transmission gear 108 .

[0053] The reduction gear 114 includes a first gear 115 and a second gear 116 that are coaxially arranged; the diameter of the second gear 116 is smaller than that of the first gear 115 .

[0054] It should be noted that a D-shaped hole can be provided at the center of the input gear 107, and the drive shaft of the drive motor 100 can be plugged into the D-shaped hole. It should be noted that those skilled in the art can also provide a shaft hole of other shapes to enable the drive shaft to drive the input gear 107 to rotate.

[0055] Reference Figure 2 As shown, there are three reduction gears 114 that are meshed with each other and stacked along the extension direction of the drive shaft.

[0056] The embodiment of the present application can control the rotation speed of the drive motor 100 to the transmission gear 108 through the provision of multiple reduction gears 114, ensuring that the drive motor 100 can achieve safe and smooth electric control.

[0057] The transmission gear 108 includes a third gear meshing with the second gear 116 ; the output bevel gear 109 is disposed on a surface of the third gear close to the rotating portion 105 and is integrally formed with the third gear.

[0058] Reference Figure 1 As shown, as an optional embodiment, the extension direction of the drive shaft of the drive motor 100 and the width direction 117 of the circuit breaker housing 104 have a preset angle; or the drive shaft of the drive motor 100 extends along the width direction 117 of the circuit breaker housing 104 .

[0059] As an optional embodiment, two position detection modules are provided in the circuit breaker housing 104; one position detection module is used to detect the operating handle 103 in the closing position, and the other detection module is used to detect the operating handle 103 in the opening position.

[0060] It should be noted that a PCB control board is provided in the circuit breaker housing 104, and a position detection module can be integrated on the PCB control board to detect the position status of the operating handle 103 or the moving contact 102. On the one hand, it is convenient for the staff to clearly understand whether the circuit breaker is currently in the open state or the closed state. On the other hand, it can help the drive motor 100 to achieve precise control and avoid the drive motor 100 from still rotating after closing or opening.

[0061] Among them, the position detection module can be a micro switch, a Hall sensor, etc., which can be set by technicians in this territory as needed.

[0062] Reference Figure 1As shown, an embodiment of the present application provides a circuit breaker, including a circuit breaker housing 104, a moving contact 102, a static contact and the above-mentioned opening and closing drive device; wherein, a connecting rod linked to the moving contact 102 is provided on the operating handle 103, and the operating handle 103 is driven to drive the moving contact 102 to open and close through the connecting rod.

[0063] The embodiment of the present application adopts the above-mentioned opening and closing drive device, which can not only realize electric opening and closing control but also realize manual opening and closing control. In addition, the opening and closing drive device provided by the embodiment of the present application has the advantages of small size and high transmission efficiency, which not only optimizes the internal assembly of the circuit breaker and effectively reduces the size of the circuit breaker, but also realizes precise control of opening and closing.

[0064] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A switch-on and switch-off drive device, characterized in that: The invention comprises a driving motor (100), a transmission gear set (101), and an operating handle (103) linked to a moving contact (102); the operating handle (103) is provided with a rotating portion (105) rotatably arranged in a circuit breaker housing (104), and the rotating portion (105) is provided with a handle umbrella gear set (106) in the circumferential direction; the driving shaft of the driving motor (100) extends in a direction perpendicular to the rotation axis of the rotating portion (105); the transmission gear set (101) comprises a spur gear set connected to the driving shaft and output umbrella gears (109); the handle umbrella gear set (106) is meshed with the output umbrella gears (109); the transmission gear set (101) drives the operating handle (103) to rotate through the output umbrella gears (109) and the handle umbrella gear set (106), thereby realizing the opening and closing operations of the moving contact (102).

2. The opening and closing drive device according to claim 1, characterized in that: The handle umbrella-shaped tooth group (106) comprises a closing umbrella-shaped tooth (110) and a tripping umbrella-shaped tooth (111); the closing umbrella-shaped tooth (110) and the tripping umbrella-shaped tooth (111) are arranged on both sides of a rotation plane (112) of a rotating portion (105); when the output umbrella-shaped tooth (109) and the closing umbrella-shaped tooth (110) are meshed and transmitted, the moving contact (102) is closed; when the output umbrella-shaped tooth (109) and the tripping umbrella-shaped tooth (111) are meshed and transmitted, the moving contact (102) is opened.

3. The opening and closing drive device according to claim 2, characterized in that: An intermediate space (113) is formed between the closing umbrella-shaped tooth (110) and the tripping umbrella-shaped tooth (111); the output umbrella-shaped tooth (109) is located in the intermediate space (113), and a gap is generated between the closing umbrella-shaped tooth (110) and the tripping umbrella-shaped tooth (111); an operator can manually drive the operating handle (103) to realize the opening and closing of the moving contact (102).

4. The opening and closing drive device according to claim 1, characterized in that: The spur gear set comprises an input gear (107), a transmission gear (108) and at least one reduction gear (114), wherein the reduction gear (114) is arranged between the input gear (107) and the transmission gear (108) for linking the input gear (107) and the transmission gear (108).

5. The opening and closing drive device according to claim 4, characterized in that: There are three reduction gears (114) meshing with each other and stacked along the extending direction of the drive shaft.

6. The opening and closing drive device according to claim 4, characterized in that: The reduction gear (114) comprises a first gear (115) and a second gear (116) which are coaxially arranged; the diameter of the second gear (116) is smaller than that of the first gear (115).

7. The opening and closing drive device according to claim 6, characterized in that: The transmission gear (108) includes a third gear meshing with the second gear (116); the output bevel gear (109) is arranged on a surface of the third gear close to the rotating part (105) and is integrally formed with the third gear.

8. The opening and closing drive device according to claim 1, characterized in that: An extending direction of the drive shaft of the drive motor (100) and a width direction (117) of the circuit breaker housing (104) form a preset angle; or the drive shaft of the drive motor (100) extends along the width direction (117) of the circuit breaker housing (104).

9. The opening and closing drive device according to claim 1, characterized in that: Two position detection modules are provided in the circuit breaker housing (104); one position detection module is used to detect the operating handle (103) in the closing position, and the other detection module is used to detect the operating handle (103) in the opening position.

10. A circuit breaker, characterized in that: The invention comprises a circuit breaker housing (104), a moving contact (102), a static contact and an opening and closing drive device as described in any one of claims 1 to 9; wherein, a connecting rod linked to the moving contact (102) is provided on the operating handle (103), and the operating handle (103) is driven to open and close the moving contact (102) through the connecting rod.

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