A circuit breaker opening and closing mechanism and circuit breaker

Abstract

The application provides a closing and opening mechanism of a circuit breaker and the circuit breaker. The closing and opening mechanism comprises a motor, a gear transmission mechanism, a transmission member, a rotating disc and an operating mechanism. The gear transmission mechanism comprises multiple-stage gear assemblies which are sequentially engaged. The first sector gear and the first matching member are arranged on the multiple-stage gear assemblies. The second sector gear is arranged on the transmission member. The second matching member is arranged on the rotating disc. When closing, the motor drives the gear transmission mechanism to rotate step by step, drives the first sector gear to rotate and engage with the second sector gear, and drives the transmission member to rotate. The transmission member drives the rotating disc to rotate in the first direction, drives the operating mechanism to rotate. The operating mechanism drives the moving contact to move towards the static contact, and reliable closing is realized. When opening, the motor drives the gear transmission mechanism to rotate step by step. The first matching member and the second matching member cooperate to drive the rotating disc to rotate in the second direction. The rotating disc drives the operating mechanism to rotate. The operating mechanism drives the moving contact to move away from the static contact, and rapid opening is realized.

Description

Technical Field

[0001] This application relates to the field of circuit breakers, specifically to a circuit breaker opening and closing mechanism and a circuit breaker. Background Technology

[0002] A circuit breaker is a switching device that can open, close, carry, and interrupt current under normal circuit conditions, and can close, carry, and interrupt current under abnormal circuit conditions within a specified time.

[0003] Existing plug-in circuit breakers are mainly controlled manually for opening and closing. However, with the development of Internet of Things (IoT) technology, existing plug-in circuit breakers cannot meet the needs of remote monitoring and control. Therefore, it is necessary to propose a circuit breaker that can automatically open and close. Summary of the Invention

[0004] In view of the above problems, this application provides a circuit breaker opening and closing mechanism and a circuit breaker, which overcomes or at least partially solves the problem that the above-mentioned plug-in circuit breaker cannot meet the needs of remote monitoring and control.

[0005] A first aspect of this application provides a circuit breaker's closing and opening mechanism, including: a motor, a gear transmission mechanism, a transmission component, a rotating disk, and an operating mechanism. The gear transmission mechanism includes a multi-stage gear assembly that meshes sequentially. A first sector gear and a first mating component are disposed on the multi-stage gear assembly. A second sector gear is disposed on the transmission component, and a second mating component is disposed on the rotating disk. During closing, the motor drives the gear transmission mechanism to rotate stage by stage, causing the first sector gear to rotate and mesh with the second sector gear, driving the transmission component to rotate. The transmission component then drives the rotating disk to rotate in a first direction. The rotating disk drives the operating mechanism to rotate, and the operating mechanism moves the moving contact towards the stationary contact, thus closing the circuit. During opening, the motor drives the gear transmission mechanism to rotate stage by stage. The first and second mating components cooperate to drive the rotating disk to rotate in a second direction. The rotating disk drives the operating mechanism to rotate, and the operating mechanism moves the moving contact away from the stationary contact, thus opening the circuit.

[0006] In this embodiment, a motor drives a gear transmission mechanism to rotate in stages, which in turn drives a transmission component to rotate. The transmission component drives a rotating disk to rotate, which in turn drives an operating mechanism to rotate, thereby moving the moving contact towards the stationary contact. Through this multi-stage transmission process, the motor can output a small load while obtaining a large torque input to the operating mechanism, making closing more stable and reliable. Furthermore, during opening, the motor drives the gear transmission mechanism to rotate in stages. Through the cooperation of the first and second mating parts, the gear transmission mechanism directly drives the rotating disk to rotate. The rotating disk drives the operating mechanism to rotate, and the operating mechanism moves the moving contact away from the stationary contact, enabling rapid opening.

[0007] In one alternative embodiment, the opening and closing mechanism further includes: a handle, a handle linkage, a first linkage device, and a second linkage device. The handle is connected to the transmission component via the handle linkage, the transmission component is connected to the rotating disk via the first linkage device, and the rotating disk is connected to the operating mechanism via the second linkage device.

[0008] By incorporating a first linkage and a second linkage, the transmission ratio and transmission torque can be further increased. Furthermore, connecting the transmission component to the handle via a handle linkage allows for a shared structure for both automatic and manual circuit breaker operation, thus saving space. Additionally, when the transmission component rotates, the handle linkage drives the handle to rotate, making it easy for the user to observe whether the circuit breaker is in the open or closed state.

[0009] In one alternative embodiment, the multi-stage gear assembly includes four sequentially meshing gear assemblies, namely a first gear, a second gear, a third gear, and a fourth gear, wherein the transmission ratio of two meshing gear stages is greater than 1.

[0010] By using a multi-stage gear assembly, the circuit breaker can achieve the larger transmission torque required for closing. Setting the transmission ratio of the two meshing gear stages to be greater than 1 can reduce the load force on the motor output.

[0011] In one alternative embodiment, both the second and third gear components include a large gear and a small gear arranged coaxially. The first gear component meshes with the large gear of the second gear component, the small gear of the second gear component meshes with the large gear of the third gear component, and the small gear of the third gear component meshes with the fourth gear component.

[0012] The second and third gear components are configured to include a large gear and a small gear arranged coaxially. When the multi-stage gear assembly rotates, the small gear of the previous stage can drive the large gear of the next stage to rotate, so that the transmission ratio of the meshing two-stage gear components is greater than 1.

[0013] In one alternative configuration, the first mating member is configured as a tripping boss, and the second mating member is configured as a protruding handle. The rotational trajectories of the first and second mating members intersect and they mate within the intersection range.

[0014] By configuring the first mating component as a tripping boss and the second mating component as a protruding handle, the rotational trajectories of the first and second mating components intersect, allowing the first and second mating components to work together to drive the rotating disk to rotate in a second direction. The rotating disk drives the operating mechanism to rotate counterclockwise, thereby moving the moving contact away from the stationary contact and achieving tripping.

[0015] A second aspect of this application provides a circuit breaker, including a PCB and a circuit breaker opening and closing mechanism provided in the first aspect of this application. The PCB is electrically connected to a motor in the circuit breaker's opening and closing mechanism, and the PCB is used to supply power to the motor.

[0016] By supplying power to the motor via the PCB, the motor does not need to be connected to the power source via additional wires within the circuit breaker, resulting in higher internal integration of the circuit breaker and more stable power supply to the motor.

[0017] In one alternative embodiment, the PCB includes a closing microswitch and an opening microswitch. The closing microswitch is located at a first position below the transmission component, and the opening microswitch is located at a second position below the transmission component. The transmission component has a first contact. The closing microswitch is used to detect the closing state when the first contact is in the first position; the opening microswitch is used to detect the opening state when the first contact is in the second position.

[0018] After the circuit breaker is closed and opened, the first contact of the transmission component is in the first position and the second position, respectively. By contacting the closing micro switch and the opening micro switch set on the PCB, the circuit breaker can be detected as being in the closed or open state, thereby controlling the rotation of the motor and reducing the possibility of malfunction of the circuit breaker provided in this embodiment.

[0019] In one alternative embodiment, the PCB includes a closing microswitch and an opening microswitch. The closing microswitch is positioned at a third position below the rotating disk, and the opening microswitch is positioned at a fourth position below the rotating disk. The rotating disk has a second contact. The closing microswitch is used to detect the closing state when the second contact is in the third position; the opening microswitch is used to detect the opening state when the second contact is in the fourth position.

[0020] By setting the second contact on the rotating disk, and setting the closing micro switch at the third position below the rotating disk, and setting the opening micro switch at the fourth position below the rotating disk, it is also possible to detect whether the circuit breaker is in the closed or open state, thereby controlling the rotation of the motor and reducing the possibility of malfunction of the circuit breaker provided in this embodiment.

[0021] In one alternative embodiment, the circuit breaker further includes a tripping and closing detection module, wherein the remote control module controls the motor to stop rotating based on the first tripping detection signal from the tripping and closing detection module and / or the second tripping detection signal from the tripping microswitch; or, the remote control module controls the motor to stop rotating based on the first closing detection signal from the tripping and closing detection module and / or the second closing detection signal from the closing microswitch.

[0022] By setting up a circuit breaker opening / closing detection module, the voltage readings within the module can be used to determine whether the moving and stationary contacts are in contact. The opening / closing detection module, the closing microswitch, and the opening microswitch are all used to detect whether the circuit breaker is in a closed or open state, thus improving detection accuracy.

[0023] In one alternative approach, the circuit breaker provided in this application embodiment is a plug-in circuit breaker.

[0024] The plug-in circuit breaker provided in this application embodiment is small in size, compact in layout, and can achieve stable opening and closing.

[0025] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the closing and opening mechanism of a circuit breaker in the closed state, provided as an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the opening and closing mechanism of a circuit breaker in the open state, provided as an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of a circuit breaker provided in an embodiment of the present application, which includes a closing microswitch and an opening microswitch and is in the closing state.

[0030] Figure 4 This is a schematic diagram of a circuit breaker provided in an embodiment of the present application, which includes a closing microswitch and a opening microswitch and is in the opening state.

[0031] Figure 5 This is a schematic diagram of the opening and closing detection module provided in an embodiment of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 01. Motor; 021. First gear component; 022. Second gear component; 023. Third gear component; 024. Fourth gear component; 03. Handle; 04. Transmission component; 041. Second sector gear; 05. Rotating disk; 051. Second mating component; 06. Operating mechanism; 07. First sector gear; 08. First mating component; 09. Moving contact; 10. Stationary contact; 11. Handle linkage; 12. First linkage device; 13. Second linkage device; 14. PCB; 15. Closing micro switch; 16. Opening micro switch; 17. First contact component; 181. Conductive component; 182. Spring; 183. Fixing post; 19. Stationary lead-out angle. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0036] The terms "comprising" and "having," and any variations thereof, used in the specification, claims, and drawings of this application are intended to cover without excluding other meanings. The words "a" or "an" do not exclude the presence of multiples.

[0037] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the opening and closing mechanism of the circuit breaker or the specific structure of the circuit breaker of this application. For example, in the description of this application, the terms "upper," "lower," "clockwise," "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0040] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0041] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. In circuit structures, "connection" or "linkage" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected; it can also refer to the internal connection of two components. Signal connection can refer not only to signal connection through a circuit but also to signal connection through a media, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] This application provides a circuit breaker opening and closing mechanism and a circuit breaker in some embodiments. Please refer to [reference needed]. Figure 1 , Figure 2 and Figure 3 . Figure 1 This is a schematic diagram of the circuit breaker's opening and closing mechanism in the closed state, provided as an embodiment of this application. Figure 2 This is a schematic diagram of the opening and closing mechanism of a circuit breaker in the open state, provided as an embodiment of this application. Figure 3This is a schematic diagram of a circuit breaker provided in an embodiment of the present application, which includes a closing microswitch and an opening microswitch and is in the closing state.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown in the embodiment of this application, a circuit breaker opening and closing mechanism includes: a motor 01, a gear transmission mechanism, a transmission component 04, a rotating disk 05, and an operating mechanism 06. The gear transmission mechanism includes a multi-stage gear assembly that meshes sequentially. A first sector gear 07 and a first mating component 08 are provided on the multi-stage gear assembly. A second sector gear 041 is provided on the transmission component 04, and a second mating component 051 is provided on the rotating disk 05.

[0044] The motor 01 drives the gear transmission mechanism to rotate, which in turn drives the second sector gear 041 on the transmission component 04 to rotate via the first sector gear 07. The rotating disk 05 can directly drive the second mating component 051 via the first mating component 08, or it can be driven by the rotation of the transmission component 04. The rotation of the rotating disk 05 drives the operating mechanism 06 to rotate, thereby realizing the opening and closing of the circuit breaker.

[0045] Specifically, the multi-stage gear assembly may include multiple sequentially meshing gears for transmitting the load force output by the motor 01 to the operating mechanism 06 in stages. In one possible manner, such as... Figure 3 As shown, taking into account the space constraints inside the circuit breaker and the transmission torque required during the closing process of the drive operating mechanism 06, in this embodiment, the multi-stage gear assembly is set as a four-stage gear assembly that meshes sequentially, namely the first gear 021, the second gear 022, the third gear 023 and the fourth gear 024, and the transmission ratio of the meshing two-stage gears is greater than 1, so that the load force output by the motor 01 is smaller.

[0046] In practical applications, to achieve a transmission ratio greater than 1 between the two meshing gears, both the second gear 022 and the third gear 023 may include a large gear and a small gear arranged coaxially. The large gear of the first gear 021 meshes with the large gear of the second gear 022, the small gear of the second gear 022 meshes with the large gear of the third gear 023, and the small gear of the third gear 023 meshes with the fourth gear 024.

[0047] The second gear assembly 022 and the third gear assembly 023 are configured to include a large gear and a small gear arranged coaxially. When the multi-stage gear assembly rotates, the motor 01 outputs a relatively small load force to drive the large gear of the second gear assembly 022 to rotate. The rotation of the small gear of the second gear assembly 022 then drives the large gear of the third gear assembly 023 to rotate with a small force. The rotation of the small gear of the third gear assembly 023 then drives the fourth gear assembly 024 to rotate with a small force. By repeatedly using the small gear of the previous stage to drive the large gear of the next stage, the required transmission torque during the closing process can be met, and the compact layout of the gears saves space.

[0048] Optionally, such as Figure 3 As shown, the first sector gear 07 and the first mating part 08 can both be disposed on the fourth gear component 024. It should be noted that the first sector gear 07 and the first mating part 08 can also be disposed on other stages of gear components as required, and this application embodiment does not limit this.

[0049] When the circuit breaker's opening and closing mechanism is used for closing, the motor 01 drives the gear transmission mechanism to rotate step by step, causing the first sector gear 07 to rotate and mesh with the second sector gear 041, thus driving the transmission component 04 to rotate. After the transmission component 04 rotates, it can drive the rotating disk 05 to rotate in the first direction. The rotating disk 05 drives the operating mechanism 06 to rotate, and the operating mechanism 06 drives the moving contact 09 to rotate. The moving contact 09 moves towards the stationary contact 10, realizing the closing.

[0050] For example, motor 01 rotates counterclockwise, driving the first gear component 021 to rotate counterclockwise. The first gear component 021 drives the large gear of the second gear component 022 to rotate clockwise, and the small gear of the second gear component 022, located below the large gear, drives the large gear of the third gear component 023 to rotate counterclockwise. The small gear of the third gear component 023, located above the large gear, drives the fourth gear component 024 to rotate clockwise, which in turn drives the first sector gear 07 to rotate clockwise. The second sector gear 041 meshes with the first sector gear 07, driving the transmission component 04 to rotate counterclockwise. After the transmission component 04 rotates, it drives the rotating disk 05 to rotate in a first direction, for example, clockwise. The rotating disk 05 drives the operating mechanism 06 to rotate clockwise, which in turn drives the moving contact 09 to move towards the stationary contact 10, thereby achieving closing the circuit.

[0051] It is worth noting that, to avoid interference with the closing process, the first sector gear 07 and the second sector gear 041 can be engaged during the closing process and disengaged before and after closing. Specifically, before closing, the first sector gear 07 is in a first preset disengagement position. When preparing to close, the first sector gear 07 rotates to a preset engagement position and begins to engage with the second sector gear 041. After closing, the first sector gear 07 continues to rotate to a second preset disengagement position and disengages from the second sector gear 041. Therefore, even if the motor 01, gear transmission mechanism, and transmission component 04 have rotational movements other than those involved in the closing action, such as manual opening and closing, it will not affect the automatic closing process of this embodiment.

[0052] When the circuit breaker's opening and closing mechanism is used for opening, motor 01 drives the gear transmission mechanism to rotate step by step. For example, motor 01 continues to rotate counterclockwise, driving the first gear 021 to rotate counterclockwise. The first gear 021 drives the large gear of the second gear 022 to rotate clockwise, and the small gear located below the large gear of the second gear 022 drives the large gear of the third gear 023 to rotate counterclockwise. The small gear located above the large gear of the third gear 023 drives the fourth gear 024 to rotate clockwise, which in turn drives the first mating member 08 to rotate clockwise. The first mating member 08 cooperates with the second mating member 051 to drive the rotating disk 05 to rotate in a second direction, for example, counterclockwise. The rotating disk 05 drives the operating mechanism 06 to rotate counterclockwise, so as to move the moving contact 09 away from the stationary contact 10, thereby realizing the opening.

[0053] In one feasible implementation, the first mating member 08 can be configured as a tripping boss, and the second mating member 051 can be configured as a protruding handle. The rotational trajectories of the first mating member 08 and the second mating member 051 intersect, thereby mating within the intersection range. For example, the first mating member 08 has an arc surface, and the first mating member 08 pushes against the second mating member 051 through the arc surface, driving the rotating disk 05 to rotate.

[0054] In another feasible implementation, the first mating part 08 can be configured as a sector gear, and the second mating part 051 can be configured as a sector gear that meshes with the first mating part 08, so that the first mating part 08 and the second mating part 051 cooperate to drive the rotating disk 05 to rotate in the second direction.

[0055] In this embodiment, the motor 01 drives the gear transmission mechanism to rotate in stages, which in turn drives the transmission component 04 to rotate. The transmission component 04 drives the rotating disk 05 to rotate, which in turn drives the operating mechanism 06 to rotate, thereby moving the moving contact 09 towards the stationary contact 10. Through this multi-stage transmission process, the motor 01 can output a small load force while obtaining a large torque input from the operating mechanism 06, making closing more stable and reliable. Moreover, during opening, the motor 01 drives the gear transmission mechanism to rotate in stages. Through the cooperation of the first mating component 08 and the second mating component 051, the gear transmission mechanism directly drives the rotating disk 05 to rotate. The rotating disk 05 drives the operating mechanism 06 to rotate, which in turn moves the moving contact 09 away from the stationary contact 10, thus quickly achieving opening. In summary, the opening and closing mechanism provided in this embodiment can automatically open and close, meeting the needs of remote monitoring and control.

[0056] In one embodiment, to facilitate user observation of whether the circuit breaker has automatically closed or opened, the closing / opening mechanism may further include: a handle 03, a handle linkage 11, a first linkage device 12, and a second linkage device 13. The handle 03 is connected to the transmission component 04 via the handle linkage 11, the transmission component 04 is connected to the rotating disk 05 via the first linkage device 12, and the rotating disk 05 is connected to the operating mechanism 06 via the second linkage device 13.

[0057] In practical applications, refer to Figure 1 and Figure 2 The handle 03 and the transmission component 04 are connected by a handle connecting rod 11. A first through hole can be provided on the handle 03, and a second through hole can be provided on the transmission component 04. The first end of the handle connecting rod 11 is movably connected to the handle 03 through the first through hole. The second end of the handle connecting rod 11 is movably or fixedly connected to the transmission component 04 through the second through hole. Alternatively, the handle connecting rod 11 can be composed of multiple connecting rods.

[0058] The transmission component 04 and the rotating disk 05 are connected by a first connecting rod device 12. This device can have a third through hole on the transmission component 04 and a fourth through hole on the rotating disk 05. The first end of the first connecting rod device 12 is movably connected to the transmission component 04 through the third through hole. The second end of the first connecting rod device 12 is movably or fixedly connected to the rotating disk 05 through the fourth through hole. Alternatively, the first connecting rod device 12 can be composed of multiple connecting rods.

[0059] The connection between the rotating disk 05 and the operating mechanism 06 via the second linkage device 13 can be referenced to the connection between the transmission component 04 and the rotating disk 05 via the first linkage device 12. This embodiment will not elaborate further on this connection.

[0060] By setting up the first linkage device 12 and the second linkage device 13, the transmission ratio and transmission torque can be further increased. Furthermore, by connecting the transmission component 04 to the handle 03 via the handle linkage 11, a shared structure for automatic and manual circuit breaker operation is achieved, saving space. Additionally, when the transmission component 04 rotates counterclockwise, the handle linkage 11 drives the handle 03 to rotate counterclockwise to the closed position, allowing the user to observe that the circuit breaker is in the closed state. When the transmission component 04 rotates clockwise, the handle linkage 11 drives the handle 03 to rotate clockwise to the open position, allowing the user to observe that the circuit breaker is in the open state.

[0061] In one embodiment, this application also provides a circuit breaker, referenced Figure 1 and Figure 2 The circuit breaker includes a printed circuit board (PCB) 14 and the opening and closing mechanism of the circuit breaker provided in the above embodiment. The PCB 14 is electrically connected to the motor 01 in the opening and closing mechanism of the circuit breaker, and the PCB 14 is used to supply power to the motor 01. In this way, the motor 01 does not need to be additionally connected to the power supply via wires, resulting in higher internal integration of the circuit breaker and more stable power supply to the motor 01.

[0062] In this embodiment, in order to control the motor 01 to stop rotating in a timely manner after the circuit breaker is opened or closed, and to reduce the possibility of misoperation, a micro switch can be set on PCB14 to detect the opening and closing status of the circuit breaker, and the remote control module can control the motor 01 to stop rotating according to the detection signal of the micro switch.

[0063] Specifically, refer to Figure 3 and Figure 4 PCB 14 includes a closing microswitch 15 and an opening microswitch 16. The closing microswitch 15 is located at a first position below the transmission member 04, and the opening microswitch 16 is located at a second position below the transmission member 04. The transmission member 04 has a first contact member 17. The closing microswitch 15 is used to detect the closing state when the first contact member 17 is in the first position. The opening microswitch 16 is used to detect the opening state when the first contact member 17 is in the second position.

[0064] When the circuit breaker is closed, motor 01 rotates counterclockwise, driving the gear transmission mechanism to rotate step by step. This causes the first sector gear 07 to rotate clockwise and mesh with the second sector gear 041, driving the transmission component 04 and the first contact 17 mounted on the transmission component 04 to rotate counterclockwise. After the circuit breaker is closed, the transmission component 04 stops rotating, and the first contact 17 contacts the closing micro switch 15 at the first position. The closing micro switch 15 sends a second closing detection signal to the remote control module. This second closing detection signal notifies the remote control module that the circuit breaker is in the closed state, so that the remote control module can control motor 01 to stop rotating based on the second closing detection signal.

[0065] During tripping, motor 01 rotates counterclockwise, driving the gear transmission mechanism to rotate step by step, which in turn drives the first mating part 08 to rotate clockwise. The first mating part 08, in conjunction with the second mating part 051, drives the rotating disk 05 to rotate counterclockwise. The rotating disk 05 drives the transmission component 04 and the first contact member 17 mounted on the transmission component 04 to rotate clockwise via the first connecting rod device 12. After tripping, the transmission component 04 stops rotating, and the first contact member 17 contacts the tripping micro switch 16 at the second position. The tripping micro switch 16 sends a second tripping detection signal to the remote control module. The second tripping detection signal is used to notify the remote control module that the circuit breaker is in the tripped state, so that the remote control module can control the motor to stop rotating based on the second tripping detection signal.

[0066] In one possible configuration, the closing microswitch 15 can also be positioned at a third position below the rotating disk 05 (not shown in the figure), and correspondingly, the opening microswitch 16 can also be positioned at a fourth position below the rotating disk 05 (not shown in the figure). The rotating disk 05 is provided with a second contact. The closing microswitch 15 is used to detect the closing state when the second contact is in the third position, and the opening microswitch 16 is used to detect the opening state when the second contact is in the fourth position.

[0067] When the circuit breaker is closed, motor 01 rotates counterclockwise, driving the gear transmission mechanism to rotate step by step, causing the first sector gear 07 to rotate clockwise and mesh with the second sector gear 041. This, in turn, drives the transmission component 04 to rotate counterclockwise. After the transmission component 04 rotates, it drives the rotating disk 05 and the second contact component mounted on the rotating disk 05 to rotate clockwise via the first connecting rod device 12. After the circuit breaker is closed, the rotating disk 05 stops rotating, and the second contact component contacts the closing microswitch 15 at the third position. The closing microswitch 15 sends a third closing detection signal to the remote control module. This third closing detection signal notifies the remote control module that the circuit breaker is in the closed state, allowing the remote control module to control motor 01 to stop rotating based on the third closing detection signal.

[0068] During tripping, motor 01 rotates counterclockwise, driving the gear transmission mechanism to rotate step by step, which in turn drives the first mating part 08 to rotate clockwise. The first mating part 08, in conjunction with the second mating part 051, drives the rotating disk 05 and the second contact member mounted on the rotating disk 05 to rotate counterclockwise. After tripping, the rotating disk 05 stops rotating, and the second contact member contacts the tripping micro switch 16 at the fourth position. The tripping micro switch 16 sends a third tripping detection signal to the remote control module. The third tripping detection signal is used to notify the remote control module that the circuit breaker is in the tripped state, so that the remote control module can control motor 01 to stop rotating based on the third tripping detection signal.

[0069] As can be seen, by setting the second contact on the rotating disk 05, setting the closing micro switch 15 at the third position below the rotating disk, and setting the opening micro switch 16 at the fourth position below the rotating disk 05, it is also possible to detect whether the circuit breaker is in the closed or open state, thereby controlling the rotation of the motor 01 and reducing the possibility of circuit breaker malfunction.

[0070] Furthermore, during the automatic opening and closing process of the circuit breaker, the moving contact 09 and the stationary contact 10 may stick together, or they may malfunction, preventing the circuit breaker from closing. In this case, relying solely on the closing microswitch 15 or the opening microswitch 16 to detect whether the circuit breaker is in the closed or open state is inaccurate. If the motor 01 continues to rotate, it may damage the circuit breaker.

[0071] Therefore, in this embodiment, the circuit breaker also includes an opening and closing detection module, as referenced. Figure 5 , Figure 5 This is a schematic diagram of the circuit breaker detection module provided in an embodiment of this application. The remote control module controls the motor 01 to stop rotating based on the first open detection signal from the circuit breaker detection module and the second open detection signal from the open microswitch 16. Alternatively, the remote control module controls the motor 01 to stop rotating based on the first close detection signal from the circuit breaker detection module and the second close detection signal from the close microswitch 15.

[0072] like Figure 5 As shown, the circuit breaker opening and closing detection module includes a conductive element 181, a spring 182, and a fixing post 183. The conductive element 181 is mounted on the PCB 14, and the fixing post 183 is fixed to the circuit breaker body. The spring 182, which can be a torsion spring, is sleeved on the fixing post 183. The first end of the spring 182 contacts the conductive element 181, and the second end of the spring 182 contacts the stationary contact 19, which is connected to the stationary contact 10.

[0073] Specifically, when the moving contact 09 and the stationary contact 10 are in contact, a voltage loop is formed inside the circuit breaker, and the opening / closing detection module displays a voltage value, sending a first closing detection signal to the remote control module. The remote control module can then control the motor 01 to stop rotating based on the first closing detection signal from the opening / closing detection module and / or the second closing detection signal from the closing microswitch 15. Conversely, when the moving contact 09 and the stationary contact 10 are separated, an open circuit is formed inside the circuit breaker, and the opening / closing detection module displays no voltage value, sending a first opening detection signal to the remote control module. The remote control module can then control the motor 01 to stop rotating based on the first opening detection signal from the opening / closing detection module and / or the second opening detection signal from the opening microswitch 16.

[0074] In this embodiment, by setting up a circuit breaker opening and closing detection module, the voltage status in the module can be used to determine whether the moving contact 09 and the stationary contact 10 are in contact. The circuit breaker opening and closing detection module, the closing micro switch 15, and the opening micro switch 16 are all used to detect whether the circuit breaker is in a closed or open state, which can improve the accuracy of the detection.

[0075] In one alternative embodiment, the circuit breaker provided in this application is a plug-in circuit breaker, which can be a rectangular structure.

[0076] The plug-in circuit breaker provided in this application embodiment is small in size, compact in layout, and can achieve stable opening and closing.

[0077] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0078] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A circuit breaker's opening and closing mechanism, characterized in that, The opening and closing mechanism includes: Motors, gear transmission mechanisms, transmission components, rotating disks, and operating mechanisms; The gear transmission mechanism includes a multi-stage gear assembly that meshes sequentially. The multi-stage gear assembly is provided with a first sector gear and a first mating component. The transmission component is provided with a second sector gear, and the rotating disk is provided with a second mating component. When the circuit is closed, the motor drives the gear transmission mechanism to rotate step by step, causing the first sector gear to rotate and mesh with the second sector gear, driving the transmission component to rotate, the transmission component to drive the rotating disk to rotate in the first direction, the rotating disk to drive the operating mechanism to rotate, and the operating mechanism to drive the moving contact to move towards the stationary contact, thereby realizing the circuit closure; When the circuit breaker is opened, the motor drives the gear transmission mechanism to rotate step by step. The first and second mating parts cooperate to drive the rotating disk to rotate in the second direction. The rotating disk drives the operating mechanism to rotate. The operating mechanism drives the moving contact away from the stationary contact, thereby realizing the circuit breaker opening. The opening and closing mechanism further includes: a handle, a handle linkage, a first linkage device, and a second linkage device; The handle is connected to the transmission component via the handle linkage, the transmission component is connected to the rotating disk via the first linkage device, and the rotating disk is connected to the operating mechanism via the second linkage device; The first mating part is configured as a tripping boss, and the second mating part is configured as a protruding handle. The rotation trajectories of the first mating part and the second mating part intersect and mate within the intersection range.

2. The opening and closing mechanism according to claim 1, characterized in that, The multi-stage gear assembly includes four gear assemblies that mesh sequentially, namely a first gear component, a second gear component, a third gear component, and a fourth gear component, wherein the transmission ratio of two meshing gear components is greater than 1.

3. The opening and closing mechanism according to claim 2, characterized in that, Both the second gear component and the third gear component include a large gear and a small gear arranged coaxially. The first gear component meshes with the large gear of the second gear component, the small gear of the second gear component meshes with the large gear of the third gear component, and the small gear of the third gear component meshes with the fourth gear component.

4. A circuit breaker, characterized in that, Includes a printed circuit board (PCB) and the opening and closing mechanism of a circuit breaker as described in any one of claims 1-3; The PCB is electrically connected to the motor in the circuit breaker's opening and closing mechanism, and the PCB is used to supply power to the motor.

5. The circuit breaker according to claim 4, characterized in that, The PCB includes a closing micro switch and an opening micro switch. The closing micro switch is located at a first position below the transmission component, and the opening micro switch is located at a second position below the transmission component. The transmission component is provided with a first contact element. The closing micro switch is used to detect the closing state when the first contact is in the first position; the opening micro switch is used to detect the opening state when the first contact is in the second position.

6. The circuit breaker according to claim 4, characterized in that, The PCB includes a closing micro switch and a opening micro switch. The closing micro switch is located at the third position below the rotating disk, and the opening micro switch is located at the fourth position below the rotating disk. The rotating disk is provided with a second contact. The closing micro switch is used to detect the closing state when the second contact is in the third position; the opening micro switch is used to detect the opening state when the second contact is in the fourth position.

7. The circuit breaker according to claim 5 or 6, characterized in that, The circuit breaker also includes a tripping and closing detection module. The remote control module controls the motor to stop rotating based on the first tripping detection signal of the tripping and closing detection module and / or the second tripping detection signal of the tripping micro switch; or, the remote control module controls the motor to stop rotating based on the first closing detection signal of the tripping and closing detection module and / or the second closing detection signal of the closing micro switch.

8. The circuit breaker according to claim 4, characterized in that, The circuit breaker is a plug-in type circuit breaker.

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