An electrically operated module and circuit breaker

Abstract

The application relates to the technical field of low-voltage electrical apparatus, in particular to an electric operating module and a circuit breaker. The electric operating module comprises a driving mechanism and a handle assembly; the driving mechanism comprises a gear assembly and a driving assembly; the gear assembly comprises at least two stages of gears, and the outer periphery of the last-stage gear is provided with a first sector tooth part and a second sector tooth part arranged at intervals; the handle assembly comprises a handle body with a closing and opening position and a driven half gear. When the last-stage gear drives the handle to move from the opening position to the closing position, the second sector tooth part is engaged with the front-stage gear of the last-stage gear, and the first sector tooth part is engaged with the driven half gear; after moving to the closing limit position, the first sector tooth part is disengaged from the driven half gear along the rotating direction of the last-stage gear, and the second sector tooth part is disengaged from the front-stage gear of the last-stage gear along the rotating direction of the last-stage gear. The motor is effectively prevented from being blocked, and the gear is prevented from being damaged, so that the product reliability is improved.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, and in particular to an electric operating module and a circuit breaker. Background Technology

[0002] The electric operating module of a circuit breaker is the core unit for realizing the remote electric opening and closing and safety interlocking functions of the circuit breaker. In existing electric operating modules, a position detection switch on the circuit board is usually used to determine whether the motor drive gear has reached the correct position, thereby controlling the motor to stop or reverse. When the motor forward drive gear assembly drives the handle to the closed position, the switch sends a position signal back to the circuit, and the circuit cuts off the power supply to the motor.

[0003] However, the existing method of detection and control relying on circuit board switches is overly dependent on electronic components. If the position detection switch is damaged, has poor contact, or the detection position shifts due to vibration or other reasons, signal control will fail. In this case, the motor will continue to output torque after the drive gear reaches the closing limit position, while the mechanism has reached its mechanical limit and can no longer rotate, resulting in a "locked-out" phenomenon. Prolonged lock-out will subject the gear assembly to enormous reverse stress, which can easily lead to gear breakage or motor burnout, ultimately causing the entire electric operating module to fail. Summary of the Invention

[0004] The purpose of this invention is to provide an electric operating module and a circuit breaker to solve the technical problem in the prior art where the electric operating module relies too much on the circuit board position detection switch, and when the switch fails, the motor drive gear cannot stop after reaching the closing limit position, resulting in gear stall and structural damage.

[0005] In a first aspect, the present invention provides an electrically operated module for a circuit breaker, the electrically operated module comprising: a drive mechanism and a handle assembly; The drive mechanism includes a gear assembly and a drive assembly for driving the gear assembly; The gear assembly includes at least two stages of gears arranged sequentially along the power transmission direction, and the outer periphery of the last stage gear in the at least two stages of gears is provided with a first sector tooth and a second sector tooth arranged at intervals, and a toothless section is provided between the first sector tooth and the second sector tooth. The handle assembly has a closed position and a closed position by rotation, and the handle assembly includes a handle body and a driven half gear disposed on the handle body; When the final gear drives the handle assembly to move from the open position to the closed position by rotating in the forward direction, the second sector tooth meshes with the previous gear of the final gear, and the first sector tooth meshes with the driven half gear to drive the handle body to move from the open position to the closed position. When the final gear drives the handle assembly to move from the open position to the limit position of the closed position through forward rotation, the final tooth of the first sector tooth disengages from the driven half gear along the rotation direction, and the final tooth of the second sector tooth disengages from the preceding gear of the final gear.

[0006] In an optional embodiment, the circumferential termination positions of the last teeth of the first sector teeth and the second sector teeth in the forward rotation direction are configured to be synchronous or staggered. When the circumferential termination position of the last tooth of the first sector tooth in the forward rotation direction and the circumferential termination position of the last tooth of the second sector tooth in the forward rotation direction are configured to be synchronously set, when the last stage gear drives the handle assembly to move from the open position to the limit position of the closed position through forward rotation, the last stage tooth of the first sector tooth in the rotation direction disengages from the driven half gear, and at the same time, the last stage tooth of the second sector tooth in the rotation direction disengages from the previous stage gear of the last stage gear. When the circumferential termination position of the last tooth of the first sector tooth in the forward rotation direction is staggered from the circumferential termination position of the last tooth of the second sector tooth in the forward rotation direction, and the circumferential termination position of the last tooth of the first sector tooth in the forward rotation direction precedes the circumferential termination position of the last tooth of the second sector tooth in the forward rotation direction, when the final gear drives the handle assembly to move from the open position to the limit position of the closed position through forward rotation, the last tooth of the first sector tooth in the rotation direction disengages from the driven half gear. After the handle assembly moves to the limit position of the closed position, the final gear continues to rotate in the forward rotation direction, and the last tooth of the second sector tooth in the rotation direction disengages from the preceding gear of the final gear.

[0007] In an optional embodiment, when the final stage gear reverses, it passes through the first position and the second position in sequence, and when the final stage gear is in the second position, it can restrict the circuit breaker from closing. When the last stage gear reverses to the second position, the last stage tooth of the second sector tooth section disengages from the previous stage gear along the rotation direction.

[0008] In an optional implementation, a reset mechanism is also included; The reset mechanism is used to drive the final gear to rotate in the opposite direction after the second sector tooth disengages from the preceding gear of the final gear, so that when the final gear needs to rotate in the opposite direction, the second sector tooth can re-engage with the preceding gear of the final gear.

[0009] In an optional implementation, the reset mechanism includes a first torsion spring; The electric operating module also includes a housing, and the first torsion spring is disposed in the housing; The final stage gear is provided with a force-receiving part. When the final stage gear rotates forward until the second sector tooth disengages from the preceding gear, the force-receiving part abuts against one end of the spring leg of the first torsion spring, so that the first torsion spring is in an energy storage state and provides a force for the final stage gear to rotate in the reverse direction, so that when the final stage gear needs to rotate in the reverse direction, the second sector tooth can re-engage with the preceding gear.

[0010] In an optional embodiment, the reset mechanism includes a second torsion spring; the final stage gear is provided with a mounting protrusion and a mounting groove, the second torsion spring is sleeved on the mounting protrusion by an interference fit, and one end of the second torsion spring is engaged with the mounting groove; the electric operating module also includes a housing, the housing is provided with a limiting part, when the final stage gear rotates forward to the point where the second sector tooth disengages from the preceding gear of the final stage gear, the limiting part abuts against the other end of the second torsion spring, so that the second torsion spring is in an energy storage state and provides a force for the final stage gear to rotate in the reverse direction, so that when the final stage gear needs to rotate in the reverse direction, the second sector tooth can re-engage with the preceding gear of the final stage gear; or; The reset mechanism includes a third torsion spring; the final stage gear is provided with a mounting protrusion and a mounting groove, the mounting protrusion is provided with an axial limiting groove, the third torsion spring is sleeved on the mounting protrusion and located in the axial limiting groove, and one end of the third torsion spring is engaged with the mounting groove; the electric operating module also includes a housing, the housing is provided with a limiting part, when the final stage gear rotates forward to the point where the second sector tooth disengages from the preceding gear of the final stage gear, the limiting part abuts against the other end of the third torsion spring, so that the third torsion spring is in an energy storage state and provides a force for the final stage gear to rotate in the reverse direction, so that when the final stage gear needs to rotate in the reverse direction, the second sector tooth can re-engage with the preceding gear of the final stage gear.

[0011] In optional implementations, a linkage component is also included; The final stage gear is provided with a boss, which is used to drive the linkage to rotate and move to the movement path of the linkage shaft of the circuit breaker during the process of the final stage gear reversing from the first position to the second position, thereby blocking the linkage shaft to limit the circuit breaker closing.

[0012] In an optional embodiment, the reset mechanism includes a reset spring; The reset spring is disposed on the linkage member and is used to drive the linkage member to rotate and exit the movement path of the linkage shaft of the circuit breaker during the circuit breaker closing process. When the last stage gear reverses to the point where the second sector tooth disengages from the first stage gear before the last stage gear, the boss abuts against the linkage member, so that the reset spring is in an energy storage state and provides the force for the last stage gear to rotate in the reverse direction, so that when the last stage gear needs to rotate in the reverse direction, the second sector tooth can re-engage with the first stage gear before the last stage gear. and / or; The electric operating module also includes a trip unit. The output end of the trip unit retracts and pulls the linkage to rotate and move to the movement path of the linkage shaft during the circuit breaker closing process. By moving the linkage shaft, the circuit breaker is tripped and opened. The reset spring is disposed on the trip unit and is used to drive the output end of the trip unit to extend and reset. When the last stage gear reverses to the point where the second sector tooth disengages from the first stage gear before the last stage gear, the boss abuts against the linkage, so that the reset spring is in an energy storage state and provides the force for the last stage gear to rotate in the reverse direction. This allows the second sector tooth to re-engage with the first stage gear before the last stage gear when the last stage gear needs to rotate in the reverse direction.

[0013] In an optional embodiment, the gear assembly includes a primary gear, a secondary gear, and a tertiary gear arranged sequentially along the power transmission direction; The first-stage gear is connected to the drive assembly, the second-stage gear meshes with the first-stage gear, and the third-stage gear is the final-stage gear.

[0014] In a second aspect, the present invention provides a circuit breaker including the electrically operated module described in any of the foregoing embodiments.

[0015] Compared with the prior art, the technical advantages of the electric operating module and circuit breaker provided by the present invention are as follows: The electric operating module provided by this invention is used for a circuit breaker. The electric operating module includes: a drive mechanism and a handle assembly; the drive mechanism includes a gear assembly and a drive assembly for driving the gear assembly; the gear assembly includes at least two stages of gears arranged sequentially along the power transmission direction, and the outer periphery of the last stage gear in the at least two stages of gears is provided with a first sector tooth portion and a second sector tooth portion arranged at intervals, and a toothless section is provided between the first sector tooth portion and the second sector tooth portion; the handle assembly has a closed position and an open position by rotation, and the handle assembly includes a handle body and a handle disposed on the hand. The driven half gear of the handle body; when the last stage gear moves from the open position to the closed position through the forward rotation drive handle assembly, the second sector tooth meshes with the first stage gear before the last stage gear, and the first sector tooth meshes with the driven half gear to drive the handle body from the open position to the closed position; when the last stage gear moves from the open position to the limit position of the closed position through the forward rotation drive handle assembly, the last stage tooth of the first sector tooth along the rotation direction disengages from the driven half gear, and the last stage tooth of the second sector tooth along the rotation direction disengages from the first stage gear before the last stage gear.

[0016] The electric operating module provided by this invention has a first sector tooth and a second sector tooth arranged at intervals in the final stage gear of its gear assembly. When the final stage gear moves to the limit position of the closing position via the forward drive handle assembly, the final tooth of the first sector tooth along the rotation direction can disengage from the driven half gear, and the final tooth of the second sector tooth along the rotation direction can disengage from the preceding stage gear of the final stage gear. Since both the first and second sector teeth disengage from their respective mating parts, the power transmission path between the preceding stage gear and the final stage gear can be automatically cut off at the physical level. The effect of this physical disengagement is that even if the position detection switch on the circuit board of the electric operating module is damaged and the drive assembly is not de-energized, the torque output by the drive assembly can only drive the preceding stage gear to idle and cannot be transmitted to the final stage gear. This fundamentally avoids the stall stress generated by the final stage gear at the closing limit position and eliminates product failure problems such as gear breakage or motor burnout caused by stalling. By simply improving the physical gear transmission structure, mechanical anti-lock protection at the closing limit position is achieved, which greatly improves the reliability and service life of the electric operating module.

[0017] The circuit breaker provided by the present invention includes the above-mentioned electric operating module. Therefore, the technical advantages and effects achieved by the circuit breaker include those achieved by the above-mentioned electric operating module, which will not be described in detail here.

[0018] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is an internal schematic diagram of the electric operation module in its initial state according to an embodiment of the present invention; Figure 2 This is an internal schematic diagram of the electric operating module at its limit position when closed, as provided in an embodiment of the present invention. Figure 3 This is a first internal schematic diagram of the electric operating module in the locked state according to an embodiment of the present invention; Figure 4 This is a second internal schematic diagram of the electric operating module in the locked state according to an embodiment of the present invention; Figure 5 This is a third internal schematic diagram of the electric operating module in the locked state according to an embodiment of the present invention; Figure 6 This is a schematic diagram of one side of the three-stage gear structure provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the other side of the three-stage gear provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the second-stage and third-stage gears provided in an embodiment of the present invention; Figure 9 A schematic diagram of the initial state provided for an embodiment of the present invention; Figure 10 A schematic diagram of the locked state provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the installation of the first torsion spring provided in an embodiment of the present invention; Figure 12 This is a schematic diagram showing the cooperation between the second torsion spring and the limiting part in an embodiment of the present invention.

[0021] Reference numerals: 1-Handle assembly; 2-Gear assembly; 3-Drive assembly; 4-First sector tooth; 5-Second sector tooth; 6-Handle body; 7-Driven half gear; 8-First torsion spring; 9-Housing; 10-Force-bearing part; 11-Second torsion spring; 12-Mounting protrusion; 13-Mounting groove; 14-Limiting part; 15-Third torsion spring; 16-Linking component; 17-Boss; 18-Reset spring; 19-Trigger; 20-First stage gear; 21-Second stage gear; 22-Third stage gear; 23-Positioning hole; 24-Axial limiting groove. Detailed Implementation

[0022] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0026] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0027] The specific structure is as follows: Figures 1 to 12 As shown.

[0028] This embodiment provides an electrically operated module for a circuit breaker. The electrically operated module includes a drive mechanism and a handle assembly 1. The drive mechanism includes a gear assembly 2 and a drive assembly 3 for driving the gear assembly 2. The handle assembly 1 includes a handle body 6 and a driven half gear 7 disposed on the handle body 6. The handle body 6 has a closed position and an open position by rotation.

[0029] The gear assembly 2 includes at least two stages of gears arranged sequentially along the power transmission direction. Specifically, in this embodiment, the gear assembly 2 includes a first-stage gear 20, a second-stage gear 21, and a third-stage gear 22 arranged sequentially along the power transmission direction. However, the gear assembly 2 is not limited to this. In practical applications, the gear assembly 2 may also include two-stage, four-stage, or more gears, as long as the final stage gear includes a first sector tooth 4 and a second sector tooth 5, and the second sector tooth 5 meshes with the preceding stage gear of the final stage gear and can disengage after reaching the limit position.

[0030] The first-stage gear 20 is connected to the drive assembly 3. Specifically, the drive assembly 3 includes a motor and a drive worm gear connected in a transmission connection. The first-stage gear 20 includes a first-stage worm gear and a first-stage pinion arranged coaxially, with the first-stage worm gear meshing with the drive worm gear. The second-stage gear 21 includes a second-stage large gear and a second-stage small gear arranged coaxially, with the second-stage large gear meshing with the first-stage small gear. The third-stage gear 22 is the final gear in this gear assembly 2. The third-stage gear 22 is provided with a positioning hole 23, through which it is mounted on the positioning shaft of the housing. The outer periphery of the third-stage gear 22 is provided with spaced-apart first sector teeth 4 and second sector teeth 5, and a toothless section is provided between the first sector teeth 4 and the second sector teeth 5.

[0031] The first sector tooth 4 can mesh with the driven half gear 7 to drive the handle body 6 from the open position to the closed position. During the process of the last stage gear driving the handle body 6 from the open position to the closed position by forward rotation, the second sector tooth 5 maintains meshing with the second stage gear 21 (i.e., the gear before the last stage gear). The power is transmitted from the drive assembly 3 to the first stage gear 20 and the second stage gear 21 in sequence to the third stage gear 22, and then to the driven half gear 7 through the first sector tooth 4.

[0032] In this embodiment, the circumferential termination positions of the last teeth of the first sector tooth 4 and the second sector tooth 5 along the forward rotation direction are configured to be synchronous or staggered.

[0033] When the circumferential termination position of the last tooth of the first sector gear 4 in the forward rotation direction and the circumferential termination position of the last tooth of the second sector gear 5 in the forward rotation direction are configured to be synchronously set, when the final gear moves from the open position to the limit position of the closed position through the forward rotation drive handle assembly 1, the last tooth of the first sector gear 4 in the rotation direction disengages from the driven half gear 7, and at the same time, the last tooth of the second sector gear 5 in the rotation direction disengages from the second-stage gear 21. At this time, the second-stage gear 21 can no longer transmit torque to the third-stage gear 22. Even if the motor is not de-energized, the drive mechanism can only be in an idling state, thus physically cutting off the power transmission at the closed limit position and realizing mechanical anti-locking.

[0034] When the circumferential termination position of the last tooth of the first sector tooth 4 in the forward rotation direction is staggered from the circumferential termination position of the last tooth of the second sector tooth 5 in the forward rotation direction, and the circumferential termination position of the last tooth of the first sector tooth 4 in the forward rotation direction precedes the circumferential termination position of the last tooth of the second sector tooth 5 in the forward rotation direction, when the final stage gear moves from the open position to the limit position of the closed position via the forward rotation drive handle assembly 1, the last tooth of the first sector tooth 4 in the rotation direction disengages from the driven half gear 7. After the handle assembly 1 moves to the limit position of the closed position, the final stage gear continues to rotate in the forward rotation direction, and the last tooth of the second sector tooth 5 in the rotation direction disengages from the second stage gear 21. At this time, the power transmission is also completely cut off, achieving anti-stall.

[0035] In this embodiment, when the third-stage gear 22 reverses, it passes through a first position and a second position in sequence. The first position is a free position, and the second position is a locked position. When the third-stage gear 22 is in the second position (locked position), it can restrict the circuit breaker from closing. When the third-stage gear 22 reverses to the second position, the last tooth of the second sector tooth 5 along the direction of rotation also disengages from the second-stage gear 21, preventing stalling in the locked position.

[0036] In this embodiment, after the closing is completed, the secondary gear 21 can drive the tertiary gear 22 to reverse to the first position (free position). At this time, the opening and closing movement path of the driven half gear 7 is located in the toothless section between the first sector tooth 4 and the second sector tooth 5 of the tertiary gear 22, and the handle body 6 can freely open and close the circuit; and the free position is the free state, i.e. the initial state.

[0037] To enable the second sector tooth 5 to re-engage after disengagement, this embodiment also includes a reset mechanism. The reset mechanism enables the third-stage gear 22 to rotate in the reverse direction when reverse rotation is required, so that the second sector tooth 5 can re-engage with the second-stage gear 21.

[0038] Specifically, the reset mechanism includes a first torsion spring 8. The electric operating module also includes a housing 9. The first torsion spring 8 is disposed on the housing 9. The third-stage gear 22 is provided with a force-receiving part 10. When the third-stage gear 22 rotates forward until the second sector tooth 5 disengages from the second-stage gear 21, the force-receiving part 10 abuts against one end of the spring leg of the first torsion spring 8. At this time, the first torsion spring 8 is in a stored energy state and provides a spring force for the third-stage gear 22 to rotate in the opposite direction. When the second-stage gear 21 rotates in the opposite direction, the first torsion spring 8 releases its stored energy, pushing the third-stage gear 22 to rotate, so that the second sector tooth 5 re-engages with the second-stage gear 21.

[0039] In another implementation, the reset mechanism includes a second torsion spring 11. The third-stage gear 22 is provided with a mounting protrusion 12 and a mounting groove 13. The second torsion spring 11 is fitted onto the mounting protrusion 12 by an interference fit, and one end of the second torsion spring 11 is engaged in the mounting groove 13. The housing 9 is provided with a limiting part 14. When the third-stage gear 22 rotates forward to the point where the second sector tooth 5 disengages from the second-stage gear 21, the limiting part 14 abuts against the other end of the second torsion spring 11, causing the second torsion spring 11 to be in a stored energy state and providing a force for the third-stage gear 22 to rotate in the opposite direction.

[0040] As another implementation, the reset mechanism includes a third torsion spring 15. The third-stage gear 22 is provided with a mounting protrusion 12 and a mounting groove 13, and the mounting protrusion 12 is provided with an axial limiting groove 24. The third torsion spring 15 is sleeved on the mounting protrusion 12 and located within the axial limiting groove 24 to prevent axial displacement of the third torsion spring 15. One end of the third torsion spring 15 is engaged in the mounting groove 13. The housing 9 is provided with a limiting part 14. When the third-stage gear 22 rotates clockwise to the point where the second sector tooth 5 disengages from the second-stage gear 21, the limiting part 14 abuts against the other end of the third torsion spring 15, causing the third torsion spring 15 to be in a stored-energy state and providing a force for the third-stage gear 22 to rotate in the opposite direction.

[0041] This embodiment also provides a reset scheme based on the cooperation of the linkage 16 and the return spring 18. The third-stage gear 22 is provided with a boss 17. During the process of the third-stage gear 22 reversing from the first position (free position) to the second position (locked position), the boss 17 drives the linkage 16 to rotate, causing the linkage 16 to move onto the movement path of the linkage shaft during the circuit breaker closing process, thereby restricting the circuit breaker closing by blocking the linkage shaft. In terms of reversing disengagement and reset, the reset mechanism includes a return spring 18. The return spring 18 is disposed on the linkage 16 and is used to drive the linkage 16 to rotate and exit the movement path of the linkage shaft. When the third-stage gear 22 reverses to the point where the second sector tooth 5 disengages from the second-stage gear 21, the boss 17 abuts against the linkage 16, causing the return spring 18 to be in a stored-energy state and providing a reverse rotation force for the third-stage gear 22.

[0042] Alternatively, the electric operating module may also include a trip unit, and the reset mechanism includes a reset spring 18. The output end of the trip unit 19 retracts and pulls the linkage 16 to rotate and move onto the movement path of the linkage shaft, thereby tripping the circuit breaker by moving the linkage shaft. The reset spring 18 is disposed within the trip unit 19 and is used to drive the output end of the trip unit 19 to extend and reset. Similarly, when the third-stage gear 22 reverses to the point where the second sector tooth 5 disengages from the second-stage gear 21, the boss 17 abuts against the linkage 16, causing the reset spring 18 to be in a stored-energy state and providing a reverse rotation force for the third-stage gear 22.

[0043] In this embodiment, since the final gear is set as a single gear component integrally formed, the outer periphery of the gear component is provided with a first sector tooth 4 and a second sector tooth 5 arranged at intervals, as well as a toothless section between the two. While realizing the function of cutting off power transmission, it also further optimizes the assembly efficiency and structural strength.

[0044] To implement the above-described operating logic, the electric operation module in this embodiment further includes a circuit board (i.e., a controller) and a detection device; the circuit board is electrically connected to the motor and the detection device, respectively, and the detection device is used to detect the position state of the handle body 6 and / or the gear assembly 2. The specific operating logic of the electric operation module in this embodiment is as follows: When the three-stage gear 22 of the electric operating module is in the first position (i.e., the free position of the circuit breaker), this is the factory position of the product. In this first position, the user can perform manual and automatic closing operations normally.

[0045] When the user sends a closing command signal to the electric operating module, the circuit board receives the signal and drives the motor to rotate forward. The motor drives the handle body 6 from the open position to the closed position via the gear assembly 2. When the handle body 6 reaches the limit position of the closed position, the second sector tooth 5 disengages from the secondary gear 21. At the same time, the detection device detects that the handle body 6 has reached the closed position and sends a closing signal back to the circuit board.

[0046] Upon receiving the closing signal, the circuit board controls the motor to reverse. Under the action of the reset mechanism (i.e., the first torsion spring 8, the second torsion spring 11, the third torsion spring 15, or the reset spring 18 in the aforementioned embodiment), the three-stage gear 22 can rotate in the reverse direction and return to the first position. In this state, it does not affect the user's manual or automatic tripping operation.

[0047] When the circuit breaker is manually tripped, receives an electric tripping command, or experiences a power outage causing the program to trip freely, the three-stage gear 22 of the electric operating module will move from the first position to the second position (i.e., the tripping locked state). At this time, the circuit board controls the motor to run, causing the boss 17 on the three-stage gear 22 in the gear assembly to drive the linkage 16 to rotate and move to the movement path of the circuit breaker's linkage shaft during the circuit breaker's closing process, thereby blocking the linkage shaft to limit the circuit breaker's closing.

[0048] When it is necessary to unlock the state, by triggering the unlock signal (for example, by applying an electric operation signal to the electric operation module or pressing a button on the electric operation module), the circuit board controls the motor drive gear assembly 2 to run again. The second sector tooth 5 re-engages with the previous gear under the action of the reset spring 18, and the third gear 22 will move from the second position to the first position. At the same time, the linkage 16 is reset under the action of the reset spring 18 and exits the movement path of the circuit breaker linkage shaft. At this time, the circuit breaker resumes normal manual and automatic closing functions.

[0049] The circuit breaker provided in this embodiment includes the above-mentioned electric operating module. Therefore, the technical advantages and effects achieved by the circuit breaker include the technical advantages and effects achieved by the above-mentioned electric operating module, which will not be repeated here.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrically operated module for a circuit breaker, characterized in that, The electric operation module includes: a drive mechanism and a handle assembly (1); The drive mechanism includes a gear assembly (2) and a drive assembly (3) for driving the gear assembly (2). The gear assembly (2) includes at least two stages of gears arranged sequentially along the power transmission direction, and the outer periphery of the last stage gear in the at least two stages of gears is provided with a first sector tooth (4) and a second sector tooth (5) arranged at intervals, and a toothless section is provided between the first sector tooth (4) and the second sector tooth (5). The handle assembly (1) has a closed position and a closed position by rotation, and the handle assembly (1) includes a handle body (6) and a driven half gear (7) disposed on the handle body (6). When the final gear drives the handle assembly (1) to move from the open position to the closed position by rotating forward, the second sector tooth (5) meshes with the first gear (20) before the final gear, and the first sector tooth (4) meshes with the driven half gear (7) to drive the handle body (6) to move from the open position to the closed position. When the last stage gear drives the handle assembly (1) to move from the open position to the limit position of the closed position by rotating forward, the last stage tooth of the first sector tooth (4) along the rotation direction disengages from the driven half gear (7), and the last stage tooth of the second sector tooth (5) along the rotation direction disengages from the first stage gear (20) preceding the last stage gear.

2. The electric operating module according to claim 1, characterized in that, The circumferential termination positions of the last teeth of the first sector tooth (4) and the second sector tooth (5) in the forward rotation direction are configured to be synchronous or staggered. When the circumferential termination position of the last tooth of the first sector tooth (4) in the forward rotation direction and the circumferential termination position of the last tooth of the second sector tooth (5) in the forward rotation direction are configured to be synchronously set, when the last stage gear drives the handle assembly (1) to move from the open position to the limit position of the closed position by forward rotation, the last stage tooth of the first sector tooth (4) in the rotation direction disengages from the driven half gear (7), and at the same time, the last stage tooth of the second sector tooth (5) in the rotation direction disengages from the previous stage gear (20) of the last stage gear. When the circumferential termination position of the last tooth of the first sector tooth (4) in the forward rotation direction is configured to be staggered from the circumferential termination position of the last tooth of the second sector tooth (5) in the forward rotation direction, and the circumferential termination position of the last tooth of the first sector tooth (4) in the forward rotation direction is ahead of the circumferential termination position of the last tooth of the second sector tooth (5) in the forward rotation direction, when the last stage gear drives the handle assembly (1) to move from the open position to the limit position of the closed position by forward rotation, the last stage tooth of the first sector tooth (4) in the rotation direction disengages from the driven half gear (7), and after the handle assembly (1) moves to the limit position of the closed position, the last stage gear continues to rotate in the forward rotation direction, and the last stage tooth of the second sector tooth (5) in the rotation direction disengages from the previous stage gear (20) of the last stage gear.

3. The electric operating module according to claim 1, characterized in that, When the final stage gear reverses, it passes through the first position and the second position in sequence. When the final stage gear is in the second position, it can restrict the circuit breaker from closing. When the last stage gear reverses to the second position, the last stage tooth of the second sector tooth (5) along the rotation direction disengages from the first stage gear (20) preceding the last stage gear.

4. The electric operating module according to claim 3, characterized in that, It also includes a reset mechanism; The reset mechanism is used to drive the final gear to rotate in the opposite direction after the second sector tooth (5) disengages from the preceding gear (20) of the final gear, so that when the final gear needs to rotate in the opposite direction, the second sector tooth (5) can re-engage with the preceding gear (20) of the final gear.

5. The electric operating module according to claim 4, characterized in that, The reset mechanism includes a first torsion spring (8); The electric operation module also includes a housing (9), and the first torsion spring (8) is disposed in the housing (9). The final gear is provided with a force-receiving part (10). When the final gear rotates forward to the point where the second sector tooth (5) disengages from the preceding gear (20), the force-receiving part (10) abuts against one end of the spring leg of the first torsion spring (8), so that the first torsion spring (8) is in an energy storage state and provides a force for the final gear to rotate in the opposite direction, so that when the final gear needs to rotate in the opposite direction, the second sector tooth (5) can re-engage with the preceding gear (20).

6. The electric operating module according to claim 4, characterized in that, The reset mechanism includes a second torsion spring (11); the final stage gear is provided with a mounting protrusion (12) and a mounting groove (13), the second torsion spring (11) is fitted onto the mounting protrusion (12) by an interference fit, and one end of the second torsion spring (11) is engaged with the mounting groove (13); the electric operation module also includes a housing (9), the housing (9) is provided with a limiting part (14), when the final stage gear rotates forward to the point where the second sector tooth (5) disengages from the preceding gear (20) of the final stage gear, the limiting part (14) abuts against the other end of the second torsion spring (11), so that the second torsion spring (11) is in an energy storage state and provides a force for the final stage gear to rotate in the opposite direction, so that when the final stage gear needs to rotate in the opposite direction, the second sector tooth (5) can re-engage with the preceding gear (20) of the final stage gear; or; The reset mechanism includes a third torsion spring (15); the final stage gear is provided with a mounting protrusion (12) and a mounting groove (13), the mounting protrusion (12) is provided with an axial limiting groove (24), the third torsion spring (15) is sleeved on the mounting protrusion (12) and located in the axial limiting groove (24), and one end of the third torsion spring (15) is engaged with the mounting groove (13); the electric operation module also includes a housing (9), the housing (9) is provided with a limiting part (14), when the final stage gear rotates forward to the point where the second sector tooth (5) disengages from the first stage gear (20) of the final stage gear, the limiting part (14) abuts against the other end of the spring leg of the third torsion spring (15), so that the third torsion spring (15) is in an energy storage state and provides a force for the final stage gear to rotate in the opposite direction, so that when the final stage gear needs to rotate in the opposite direction, the second sector tooth (5) can re-engage with the first stage gear (20) of the final stage gear.

7. The electric operating module according to claim 4, characterized in that, It also includes linkage components (16); The final gear is provided with a boss (17). The boss (17) is used to drive the linkage (16) to rotate and move to the movement path of the linkage shaft of the circuit breaker during the process of the final gear reversing from the first position to the second position, thereby blocking the linkage shaft to restrict the circuit breaker from closing.

8. The electric operating module according to claim 7, characterized in that, The reset mechanism includes a reset spring (18); The reset spring (18) is disposed on the linkage (16) and is used to drive the linkage (16) to rotate and exit the movement path of the linkage shaft of the circuit breaker during the circuit breaker closing process. When the last stage gear reverses to the point where the second sector tooth (5) disengages from the first stage gear (20) before the last stage gear, the boss (17) abuts against the linkage (16), so that the reset spring (18) is in an energy storage state and provides the force for the last stage gear to rotate in the reverse direction, so that when the last stage gear needs to rotate in the reverse direction, the second sector tooth (5) can re-engage with the first stage gear (20) before the last stage gear. and / or; The electric operation module also includes a trip unit (19). The output end of the trip unit (19) pulls the linkage (16) to rotate and move to the movement path of the linkage shaft during the circuit breaker closing process. The circuit breaker is tripped and opened by moving the linkage shaft. The reset spring (18) is set on the trip unit (19) to drive the output end of the trip unit (19) to extend and reset. When the last stage gear reverses to the point where the second sector tooth (5) disengages from the first stage gear (20) of the last stage gear, the boss (17) abuts against the linkage (16), so that the reset spring (18) is in an energy storage state and provides the force for the last stage gear to rotate in the opposite direction. When the last stage gear needs to rotate in the opposite direction, the second sector tooth (5) can re-engage with the first stage gear (20) of the last stage gear.

9. The electric operating module according to any one of claims 1-8, characterized in that, The gear assembly (2) includes a first-stage gear (20), a second-stage gear (21) and a third-stage gear (22) arranged sequentially along the power transmission direction. The first-stage gear (20) is connected to the drive assembly (3) for transmission, the second-stage gear (21) meshes with the first-stage gear (20), and the third-stage gear (22) is the final-stage gear.

10. A circuit breaker, characterized in that, Includes the electric operating module as described in any one of claims 1-9.

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