Operating mechanism and circuit breaker

Abstract

The utility model provides an operating mechanism and a circuit breaker, and relates to the technical field of electrical equipment. The operating mechanism provided by the utility model comprises a traction rod, a lock catch and a re-buckle. The traction rod can rotate, the lock catch and the traction rod are oppositely arranged, and a first clamping groove and a second clamping groove are formed in the side, facing the traction rod, of the lock catch and distributed in the axis direction of the traction rod at intervals. The re-buckle is connected to the side, facing the lock catch, of the traction rod and can rotate along with the traction rod, and a first boss and a second boss are arranged on the side, facing the lock catch, of the re-buckle. Therefore, when the circuit breaker loaded with the operating mechanism provided by the utility model is switched between tripping and reclosing, the friction between the reclosing and the lock catch can be reduced, and the working reliability of the circuit breaker is improved. In addition, a first guide table can be connected to the first boss. Therefore, the first guide table can play a role in guiding the relative movement between the first boss and the lock catch, so that the circuit breaker can be switched between tripping and reclosing conveniently.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and in particular to an operating mechanism and a circuit breaker. Background Technology

[0002] A circuit breaker is a device that disconnects or connects a circuit to ensure its normal operation. A circuit breaker includes a moving contact, a stationary contact, and an operating mechanism. The operating mechanism drives the moving contact so that it can make or break contact with the stationary contact.

[0003] The operating mechanism typically includes a latch, a re-latch, and a trip latch. The latch and re-latch work together to lock the trip latch, allowing the operating mechanism to normally drive the moving contact. Alternatively, the latch and re-latch can also release the lock on the trip latch, putting the circuit breaker in the tripped state, in which case the operating mechanism cannot drive the moving contact. After the circuit breaker trips, if you want to reconnect the circuit, you need to perform a reclosing operation, which requires the latch and re-latch to lock the trip latch. During normal use, the circuit breaker may trip and reclose repeatedly.

[0004] In related technologies, the operating mechanism is not set up properly, which can affect the coordination between the latch and the re-latch after long-term use of the circuit breaker, and may even cause dead latching or slippage, thus limiting the normal use of the circuit breaker. Utility Model Content

[0005] This application provides an operating mechanism and a circuit breaker, which can make the setting of the operating mechanism more reasonable, reduce the possibility that the cooperation between the latch and the re-latch will be affected after long-term use, and improve the reliability of the circuit breaker operation.

[0006] In a first aspect, this application provides an operating mechanism for a circuit breaker. The operating mechanism includes a pull rod, a latch, and a re-latch. The pull rod is rotatable, and the latch is disposed opposite to the pull rod. The latch has a first slot and a second slot on the side facing the pull rod, and the first slot and the second slot are spaced apart along the axial direction of the pull rod. The re-latch is connected to the side of the pull rod facing the latch and can rotate with the pull rod. The re-latch has a first boss and a second boss on the side facing the latch.

[0007] The circuit breaker can switch between tripping and reclosing. When the circuit breaker is reclosing, both the first and second protrusions abut against the side of the latch facing the reclosing position. When the circuit breaker is tripping, the first protrusion is embedded in the first slot, and the second protrusion is embedded in the second slot.

[0008] The operating mechanism designed in this application reduces friction between the latch and the locking mechanism, mitigating the possibility of excessive wear on these components after prolonged use, which could affect their proper engagement. This reduces the likelihood of the operating mechanism becoming stuck or slipping, thus improving the reliability of the circuit breaker.

[0009] Optionally, a first guide platform is connected to the side of the first protrusion away from the axis of the traction rod. In the distribution direction of the first guide platform and the first protrusion, the projection of the first guide platform is located inside the projection of the first protrusion, and the first guide platform is embedded in the first slot.

[0010] The first guide platform can guide the relative movement between the first protrusion and the latch, making it easier for the circuit breaker to switch between tripping and reclosing.

[0011] Optionally, the connection between the first boss and the first guide platform is an arc structure.

[0012] Thus, the transition between the first boss and the first guide platform is relatively smooth. This reduces the possibility of stress concentration at the connection between the first boss and the first guide platform due to geometric changes, improves the connection strength between the first boss and the first guide platform, and reduces the possibility of cracks or even breakage between the first boss and the first guide platform during operation of the operating mechanism.

[0013] Optionally, the first guide platform has a first side facing the first boss and a second side facing away from the first boss. The size of the first guide platform gradually decreases from the first side to the second side.

[0014] In this way, the size of the first guide platform is gradually changed, which can reduce the amount of material used in the first guide platform while ensuring its strength, and reduce the manufacturing cost of the re-clamping.

[0015] Optionally, a second guide platform is connected to the side of the second protrusion away from the axis of the traction rod. In the distribution direction of the second guide platform and the second protrusion, the projection of the second guide platform is located inside the projection of the second protrusion, and the second guide platform is embedded in the second slot.

[0016] That is, a second guide platform can also be set on the second protrusion. The second guide platform can also guide the relative movement of the re-clamp and the latch, which can make the tripping and re-closing of the circuit breaker smoother.

[0017] Optionally, the operating mechanism also includes a trip latch, located on the side of the latch facing away from the re-clamping. The latch has a locking groove located between a first locking groove and a second locking groove, and a locking platform is provided on the side of the trip latch facing the latch. In the event of circuit breaker reclosing, the locking platform is embedded in the locking groove; in the event of circuit breaker tripping, the locking platform disengages from the locking groove.

[0018] With the above configuration, the trip latch can engage with the locking mechanism via a snap-fit ​​platform. Specifically, the snap-fit ​​platform can be detached from or snap-fitted into the snap-fit ​​slot, allowing the trip latch to maintain different states. In this way, the trip latch can drive the moving contact, completing the switching of the circuit breaker between tripping and reclosing.

[0019] Optionally, the latch includes a support plate, a first side plate, and a second side plate, with the first and second side plates connected to the traction rod at a distance, and the support plate connected between the first and second side plates. A first boss is connected to the side of the first side plate facing the latch, and a second boss is connected to the side of the second side plate facing the latch.

[0020] In this way, the first side plate and the second side plate can respectively form opposite sides of the re-fastening mechanism. The first boss can be connected to the side of the first side plate facing the latch, and the second boss can be connected to the side of the second side plate facing the latch. This allows the first boss and the second boss to engage with the latch from both sides of the re-fastening mechanism, reducing the possibility of uneven force distribution between the re-fastening mechanism and the latch, which could lead to excessive friction.

[0021] Optionally, the pull rod is provided with a mating groove, the groove opening facing the latch, and a mating rod is provided in the mating groove. The latch is then set in the mating groove, a first mating hole is provided on the first side plate, and a second mating hole is provided on the second side plate. The mating rod passes through both the first and second mating holes. A first fixing hole is provided on the groove wall, and a second fixing hole is provided on the support plate. Fasteners pass through both the first and second fixing holes.

[0022] With the above configuration, the traction rod and the re-clamp can be connected via a mating rod and fasteners, allowing them to rotate synchronously. Furthermore, the re-clamp is positioned within a mating groove facing the locking mechanism, facilitating the engagement between the re-clamp and the locking mechanism and ensuring the normal operation of the operating mechanism.

[0023] Optionally, the operating mechanism also includes a bracket and a torsion spring. The traction rod is rotatably connected to the bracket via a mating rod and then latched inside the bracket. A mating boss is provided on the side of the first side plate opposite to the first boss. The torsion spring passes through the mating rod, with one torsion arm of the torsion spring abutting against the mating boss and the other torsion arm of the torsion spring abutting against the side of the bracket near the first side plate. And / or, a mating boss is provided on the side of the second side plate opposite to the second boss. A torsion spring passes through the mating rod, with one torsion arm of the torsion spring abutting against the mating boss and the other torsion arm of the torsion spring abutting against the side of the bracket near the second side plate.

[0024] With the above settings, the re-clamp can cooperate with the torsion spring in different ways so that the torsion spring can provide a driving force to the re-clamp when the circuit breaker is re-closed, so that the re-clamp and the latch can re-engage.

[0025] Secondly, this application provides a circuit breaker including any of the operating mechanisms described in the first aspect above.

[0026] The beneficial effects of the circuit breakers provided in the second aspect and the various possible designs of the second aspect can be found in the first aspect and the various possible implementations of the first aspect, and will not be repeated here. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an operating mechanism according to an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of a re-snap method according to an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of a latch according to an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of an operating mechanism with its support bracket, upper link, and lower link hidden, according to an embodiment of this application.

[0031] Figure 5 This is a schematic diagram of an operating mechanism for reclosing a circuit breaker according to an embodiment of this application.

[0032] Figure 6 This is a schematic diagram of the operating mechanism of a circuit breaker during reclosing, according to an embodiment of this application, from another perspective.

[0033] Figure 7 This is a schematic diagram of an operating mechanism for a circuit breaker tripping according to an embodiment of this application.

[0034] Figure 8 This is a schematic diagram illustrating an operating mechanism that conceals a traction rod, a jump buckle, an upper connecting rod, and a lower connecting rod, according to an embodiment of this application.

[0035] Figure 9 This is a schematic diagram of the re-cutting process in related technologies.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100: Operating mechanism; 10: Traction rod; 11: Mating groove; 12: Mating rod; 111: First fixing hole; 20: Lock; 21: First slot; 22: Second slot; 23: Snap-fit ​​groove; 30: Re-lock; 31: First boss; 32: Second boss; 311: First guide platform; 312: Arc structure; 33: Support plate; 34: First side plate; 341: First mating hole; 35: Second side plate; 351: Second mating hole; 331: Second fixing hole; 36: Mating boss; 40: Jumper; 41: Snap-fit ​​platform; 50: Fastener; 60: Bracket; 70: Torsion spring; 80: Upper connecting rod; 90: Lower connecting rod. Detailed Implementation

[0038] 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.

[0039] 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 pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0040] 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.

[0041] In this article, the term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0042] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They 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. Therefore, they should not be construed as limitations on this application.

[0043] 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.

[0044] 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).

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection fixed by spacers, such as a connection fixed by screws, bolts, or other spacers; 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. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0047] A circuit breaker is a protective device in a power system used to actively disconnect or connect circuits and quickly isolate risks during faults. Circuit breakers primarily operate through the interaction between moving and stationary contacts. When the moving and stationary contacts are in contact, the circuit breaker connects the circuit; when they separate, it disconnects the circuit.

[0048] The operating mechanism, as the control structure within the circuit breaker, controls the moving contact, causing it to move relative to the stationary contact. The operating mechanism includes a latch and a re-latch, which work together to trip the circuit breaker in the event of a short circuit or overload. In this case, the moving and stationary contacts separate, ensuring the circuit breaker's safe operation. After tripping, the latch can be activated, causing it and the re-latch to move relative to each other, allowing the circuit breaker to reclose. Thus, the circuit breaker can normally open and close, controlling the on / off state of the circuit.

[0049] However, during long-term use, circuit breakers may repeatedly trip and reclose. During this process, the latch and re-latch will continuously rub against each other. As this friction continues, the fit between the latch and re-latch may be affected, leading to deadlock or slippage of the operating mechanism.

[0050] Based on the above problems, this application proposes an operating mechanism 100 and a circuit breaker, which can reduce the possibility of dead-end or slippage of the operating mechanism 100 and improve the reliability of the circuit breaker operation.

[0051] The operating mechanism 100 provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings. (Refer to...) Figure 1 , Figure 2 and Figure 3 As shown, this application provides an operating mechanism 100, which includes a traction rod 10, a latch 20, and a re-latch 30. The traction rod 10 is rotatable, and the latch 20 is disposed opposite to the traction rod 10. The latch 20 has a first slot 21 and a second slot 22 on the side facing the traction rod 10, and the first slot 21 and the second slot 22 are spaced apart along the axial direction of the traction rod 10. The re-latch 30 is connected to the side of the traction rod 10 facing the latch 20 and can rotate with the traction rod 10. The re-latch 30 has a first boss 31 and a second boss 32 on the side facing the latch 20.

[0052] The circuit breaker can switch between tripping and reclosing. When the circuit breaker is reclosing, both the first protrusion 31 and the second protrusion 32 abut against the side of the latch 20 facing the re-latch 30. When the circuit breaker is tripping, the first protrusion 31 is embedded in the first slot 21, and the second protrusion 32 is embedded in the second slot 22.

[0053] In this embodiment, the operating mechanism 100 includes a traction rod 10, a latch 20, and a re-latch 30. The re-latch 30 is connected to the traction rod 10, and the traction rod 10 can drive the re-latch 30 to move relative to the latch 20, thus enabling the re-latch 30 to cooperate with the latch 20. In this way, the circuit breaker equipped with the operating mechanism 100 can achieve tripping and reclosing through the cooperation between the re-latch 30 and the latch 20.

[0054] Specifically, the latch 20 is positioned opposite the pull rod 10, and the re-latch 30 is connected to the pull rod 10. Since the re-latch 30 faces the latch 20, the engagement between the re-latch 30 and the latch 20 changes when the re-latch 30 is activated, causing the operating mechanism 100 to be in different states. Correspondingly, when the operating mechanism 100 switches between different states, the circuit breaker can be switched between tripping and reclosing.

[0055] In this application, the latch 20 has a first slot 21 and a second slot 22 spaced apart along the axis of the traction rod 10 on the side facing the latch 20. The first boss 31 can be opposite to the portion of the latch 20 with the first slot 21, and the second boss 32 can be opposite to the portion of the latch 20 with the second slot 22. Thus, when the traction rod 10 drives the re-latch 30 to operate, causing the circuit breaker to trip, the first boss 31 can be embedded in the first slot 21, and the second boss 32 can be embedded in the second slot 22.

[0056] When the circuit breaker switches from tripping to reclosing, the first protrusion 31 disengages from the first slot 21, and the second protrusion 32 disengages from the second slot 22. As the re-clamp 30 rotates, both the first protrusion 31 and the second protrusion 32 abut against the side of the latch 20 facing the re-clamp 30, thus limiting the latch 20. At this time, the latch 20, the re-clamp 30, and the traction rod 10 are in a balanced position, and the circuit breaker is in the re-closing state.

[0057] In this embodiment, the latch 30 is provided with a first protrusion 31 and a second protrusion 32, and the latch 20 is provided with a first slot 21 and a second slot 22. When the circuit breaker repeatedly trips and recloses, the first protrusion 31 will repeatedly engage with and disengage from the first slot 21, and the second protrusion 32 will repeatedly engage with and disengage from the second slot 22.

[0058] That is, in this application, during the process of the circuit breaker tripping and reclosing caused by the operation mechanism 100, the re-clamp 30 can cooperate with the latch 20 at both the first protrusion 31 and the second protrusion 32. Thus, as the circuit breaker is used, the friction between the latch 20 and the re-clamp 30 will be distributed at the first protrusion 31 and the first slot 21, and at the second protrusion 32 and the second slot 22.

[0059] The arrangement of the first protrusion 31 and the second protrusion 32 in this application serves two purposes. First, it ensures that the force on both sides of the latch 30 and the lock 20 is more even, reducing the possibility of uneven force distribution on one side of the latch 30 and the lock 20, which could lead to greater friction between them. Second, the fact that the latch 30 and the lock 20 are subjected to force on both sides reduces the magnitude of the force on one side of the latch 30 and the lock 20, thereby reducing the friction between the first protrusion 31 and the first groove, and between the second protrusion 32 and the second groove.

[0060] The two sides of the buckle 30 refer to the side of the buckle 30 where the first protrusion 31 is provided and the side of the buckle 30 where the second protrusion 32 is provided. The two sides of the latch 20 refer to the side of the latch 20 where the first slot 21 is provided and the side of the latch 20 where the second slot 22 is provided.

[0061] In summary, the design of the operating mechanism 100 in this application can reduce the friction between the re-clamp 30 and the latch 20, thereby reducing the possibility that excessive wear between the re-clamp 30 and the latch 20 after long-term use of the circuit breaker could affect their coordination. This reduces the likelihood of the operating mechanism 100 becoming stuck or slipping, improving the reliability of the circuit breaker.

[0062] To make the solution and beneficial effects of this application clearer, this application will be described in detail in conjunction with relevant technologies.

[0063] In related technologies, the re-clamp has a re-clamping boss and the latch has a locking slot. When the circuit breaker switches between tripping and reclosing, the re-clamping boss can be embedded in the locking slot or disengage from the locking slot and abut against the latch. In these related technologies, the force between the latch and the re-clamp is concentrated on the re-clamping boss side. This results in a larger force on one side of the latch and the re-clamp, which can easily lead to wear on the re-clamping boss or the locking slot, and the wear may be accelerated after initial wear.

[0064] Under this configuration in the relevant technology, the surfaces of the locking boss or the slot are prone to wear. Loss of material on the locking boss surface results in a smaller locking boss size, while loss of material on the slot surface results in a larger slot size. Wear on the locking boss and the slot can easily lead to an increased clearance between them, making them prone to disengagement. Alternatively, it may prevent the locking boss from smoothly disengaging from the slot, potentially causing slippage or dead engagement of the operating mechanism, leading to the circuit breaker malfunctioning.

[0065] In this application, a first protrusion 31 and a second protrusion 32 are respectively provided on both sides of the re-fastener 30. The re-fastener 30 can cooperate with the latch 20 through the first protrusion 31 and the second protrusion 32 respectively. In this way, both sides of the re-fastener 30 and the latch 20 are subjected to force, which can make the force on the re-fastener 30 and the latch 20 more balanced and reduce the wear on one side of the re-fastener 30 and the latch 20. That is, the wear between the first protrusion 31 and the first slot 21, and the wear between the second protrusion 32 and the second slot 22 can be reduced.

[0066] Furthermore, in the operating mechanism 100 proposed in this application, since the first boss 31 and the second boss 32 can respectively apply force to the latch 20 or respectively bear the force applied by the latch 20, the force on one side of the re-latch 30 and the latch 20 is reduced. In this way, the force between the first boss 31 and the first slot 21, and the force between the second boss 32 and the second slot 22 can also be reduced, thereby reducing the friction between the re-latch 30 and the latch 20, and thus reducing wear.

[0067] In summary, compared with the settings in related technologies, the operating mechanism 100 proposed in this application embodiment can reduce the wear between the re-clamp 30 and the locking 20, reduce the risk of slippage or deadlock of the operating mechanism 100, and improve the reliability of the circuit breaker operation.

[0068] In some embodiments, such as Figure 1 and Figure 4 As shown, the operating mechanism 100 may also include a trip latch 40, which can cooperate with the latch 20 to drive the moving contact of the circuit breaker so that the circuit breaker can normally complete the tripping or reclosing.

[0069] In this application, the trip latch 40 is located on the side of the latch 20 opposite to the re-tightening latch 30. The latch 20 is provided with a snap-fit ​​groove 23, located between the first snap-fit ​​groove 21 and the second snap-fit ​​groove 22. The trip latch 40 has a snap-fit ​​platform 41 on the side facing the latch 20. The snap-fit ​​platform 41 can be separated from or snapped into the snap-fit ​​groove 23, allowing the trip latch 40 to have different states, thereby enabling the circuit breaker to switch between tripping and reclosing.

[0070] The operation of the operating mechanism 100 during circuit breaker tripping and reclosing is described in detail here. It should be noted that the operation of the first boss 31 is similar to that of the second boss 32. Some of the operation of the second boss 32 is omitted in the following description. The specific operation of the second boss 32 can be referred to the operation of the first boss 31.

[0071] like Figure 5 and Figure 6 As shown, when the circuit breaker is reclosed, both the first protrusion 31 and the second protrusion 32 abut against the latch 20, while the locking platform 41 is embedded in the locking groove 23. Thus, in the rotational direction of the latch 20, different sides of the latch 20 can be limited by the re-locking 30 and the tripping 40 respectively, keeping the latch 20 in a balanced state. At this time, the circuit breaker can normally and stably open and close.

[0072] When the circuit breaker switches to trip mode, the operating mechanism 100 follows the instructions. Figure 5 Taking the indicated orientation as an example, the traction rod 10 can drive the latch 30 to rotate clockwise. Combined with... Figure 6The rotation of the traction rod 10 allows the first protrusion 31 to slide downward along the latch 20. When the first protrusion 31 is opposite to the first slot 21, the latch 30 releases its support for the latch 20, and the latch 20 can tilt counterclockwise toward the latch 30 until the first protrusion 31 is embedded in the first slot 21 and locked by the first slot 21.

[0073] As the latch 20 tilts, the locking platform 41 gradually disengages from the locking groove 23 until it falls out completely. Subsequently, the trip latch 40 becomes unbalanced and rotates clockwise, thus disengaging by actuating the moving contact. Figure 7 As shown.

[0074] When the circuit breaker switches from reclosing to tripping, the tripping latch 40, locking latch 20, and re-latch 30 can proceed in the opposite direction to the circuit breaker's tripping process. This application will not elaborate further on this.

[0075] Since the locking slot 23 is located between the first locking slot 21 and the second locking slot 22, the force applied by the locking platform 41 to the latch 20 will also be located between the first locking slot 21 and the second locking slot 22. This helps to maintain a uniform force on the latch 20, making the cooperation between the latch 20, the re-clamp 30, and the trip latch 40 more stable, and reducing the possibility that excessive force on one side may cause the circuit breaker to slip during reclosing.

[0076] In addition, when the circuit breaker proposed in this application is in the reclosing state, the re-clamp 30 can support the latch 20 through the first boss 31 and the second boss 32, which makes the limit of the latch 20 by the re-clamp 30 more reliable and improves the stability of the re-clamp 30, the latch 20 and the trip 40.

[0077] In some embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, a first guide platform 311 can be connected to the side of the first protrusion 31 away from the axis of the traction rod 10. In the distribution direction of the first guide platform 311 and the first protrusion 31, the projection of the first guide platform 311 is located inside the projection of the first protrusion 31. When the circuit breaker is reclosed, the first guide platform 311 is embedded in the first slot 21.

[0078] A first guide platform 311 is connected to the first boss 31, and the first guide platform 311 is located on the side opposite to the axis of the traction rod 10. Therefore, the first guide platform 311 extends toward the latch 20. Since the projection of the first guide platform 311 is located inside the projection of the first boss 31 in the distribution direction of the first guide platform 311 and the first boss 31, the size of the first guide platform 311 is smaller than the size of the first boss 31, and the first boss 31 and the first guide platform 311 can form a stepped structure.

[0079] In this embodiment, when the circuit breaker switches from tripping to reclosing, and from reclosing to tripping, the first guide platform 311 can also move relative to the first slot 21. The first guide platform 311 can guide the relative movement between the first protrusion 31 and the latch 20, facilitating the switching of the circuit breaker between tripping and reclosing.

[0080] Specifically, when the circuit breaker is reclosed, both the first protrusion 31 and the second protrusion 32 abut against the latch 20, and the first guide platform 311 can be embedded in the first slot 21. When the circuit breaker switches to tripping mode, the latch 30 can rotate so that the first protrusion 31 is embedded in the first slot 21 and the second protrusion 32 is embedded in the second slot 22. At this time, the first guide platform 311 can extend out of the latch 20 through the first slot 21.

[0081] During this process, the first guide platform 311 is initially embedded in the first slot 21. Then, as the latch 30 rotates, the first guide platform 311 slides in the first slot 21 and gradually extends out of the latch 20. During this period, the first slot 21 can limit and guide the sliding of the first guide platform 311, making it easier for the first protrusion 31 connected to the first guide platform 311 to be embedded in the first slot 21. This reduces the possibility of the first protrusion 31 being difficult to correctly embed in the first slot 21 due to displacement during the rotation of the latch 30.

[0082] Furthermore, the first protrusion 31 is opposite to the first slot 21, and the second protrusion 32 is opposite to the second slot 22. The first guide platform 311 is provided to facilitate the first protrusion 31 entering the first slot 21. When the first protrusion 31 can be correctly embedded in the first slot 21, the second protrusion 32 can also be correctly embedded in the second slot 22.

[0083] Similarly, during the switching process of the circuit breaker from tripping to reclosing, the first guide platform 311 can also slide along the first slot 21, allowing it to slide away from the latch 20 until the first protrusion 31 and the second protrusion 32 can abut against the latch 20. During this process, the first guide platform 311 can also guide the movement of the reclosing 30. Furthermore, the design of the first guide platform 311 can reduce the possibility of the reclosing 30 rotating and shifting during the circuit breaker's reclosing process, facilitating the circuit breaker's correct tripping next time.

[0084] That is, the first guide platform 311 in this application can facilitate the cooperation between the first protrusion 31 and the first slot 21, and the cooperation between the second protrusion 32 and the second slot 22, so that the tripping and reclosing of the circuit breaker can be smoother.

[0085] In some embodiments, such as Figure 2 As shown, the connection between the first boss 31 and the first guide platform 311 can be an arc structure 312.

[0086] Thus, the transition between the first boss 31 and the first guide platform 311 is relatively smooth. This can reduce the possibility of stress concentration at the connection between the first boss 31 and the first guide platform 311 due to geometric changes, improve the connection strength between the first boss 31 and the first guide platform 311, and reduce the possibility of cracks or even breakage between the first boss 31 and the first guide platform 311 during the operation of the operating mechanism 100.

[0087] Furthermore, the arcuate structure 312 between the first protrusion 31 and the first guide platform 311 can optimize the fit between the structures. For example, when the first protrusion 31 abuts against the latch 20 and the first guide platform 311 is embedded in the first slot 21, the connection between the first protrusion 31 and the first guide platform 311 may fit with the opening of the first slot 21. The arcuate structure 312 between the first protrusion 31 and the first guide platform 311 can reduce damage to the first slot 21 and improve the reliability of the operating mechanism 100.

[0088] In some embodiments, such as Figure 2 As shown, the first guide platform 311 has a first side facing the first boss 31 and a second side facing away from the first boss 31. The size of the first guide platform 311 can gradually decrease from the first side to the second side.

[0089] Thus, the size of the first guide platform 311 is gradually changed, which can reduce the amount of material used in the first guide platform 311 while ensuring its strength, thereby reducing the manufacturing cost of the additional clip 30.

[0090] Furthermore, the gradually changing size of the first guide platform 311 gives it an inclined surface. During the sliding process of the first guide platform 311 in the first slot 21, the first guide platform 311 can slide along the inclined surface, which facilitates the first protrusion 31 being embedded in the first slot 21.

[0091] It should be noted that the first guide platform 311 in this application can be configured in different ways to achieve a gradual reduction in the size of the first guide platform 311. For example, from the first side to the second side, the outer surface of the first guide platform 311 changes continuously, and the outer surface of the first guide platform 311 is smooth as a whole without any abrupt changes in size.

[0092] Alternatively, from the first side to the second side, the outer surface of the first guiding platform 311 may also change discontinuously, and the size of the first guiding platform 311 may suddenly decrease at a certain position. To facilitate the sliding of the first guiding platform 311 in the first clamping groove 21, the position where the size of the first guiding platform 311 changes abruptly may be an inclined surface, and the inclined surface can also play a guiding role. When the circuit breaker trips, it can facilitate the smooth sliding of the first guiding boss on the first side. For the specific setting method of the first guiding platform 311, the embodiments of the present application do not make specific limitations herein.

[0093] In some embodiments, a second guiding platform may be connected to the side of the second boss 32背离 the axis of the traction rod 10. In the distribution direction of the second guiding platform and the second boss 32, the projection of the second guiding platform is located inside the projection of the second boss 32, and the second guiding platform is embedded in the second clamping groove 22.

[0094] That is, in the embodiments of the present application, in addition to setting the first guiding platform 311 on the first boss 31, a second guiding platform may also be set on the second boss 32. The second guiding platform can also guide the relative movement of the reclosing part 30 and the locking part 20, which can make the tripping and reclosing of the circuit breaker smoother. For the specific description of the first guiding platform 311, reference can be made to the relevant description above, and the embodiments of the present application will not be elaborated herein.

[0095] In addition, the first guiding platform 311 and the second guiding platform may also be set simultaneously. In this way, both the first guiding platform 311 and the second guiding platform can play a guiding role in the cooperation between the reclosing part 30 and the locking part 20.

[0096] In some embodiments, as Figure 1 and Figure 2 shown, the reclosing part 30 may include a support plate 33, a first side plate 34, and a second side plate 35. The first side plate 34 and the second side plate 35 are connected to the traction rod 10 at intervals, and the support plate 33 is connected between the first side plate 34 and the second side plate 35. In this way, the reclosing part 30 as a whole can form a structure similar to "凵".

[0097] The first side plate 34 and the second side plate 35 may respectively form the opposite sides of the reclosing part 30. The first boss 31 may be connected to the side of the first side plate 34 facing the locking part 20, and the second boss 32 may be connected to the side of the second side plate 35 facing the locking part 20. In this way, it can make the first boss 31 and the second boss 32 cooperate with the locking part 20 from both sides of the reclosing part 30 respectively, reducing the possibility of large friction caused by uneven force between the reclosing part 30 and the locking part 20.

[0098] Herein, the specific connection between the traction rod 10 and the reclosing part 30 of the present application is described. As Figure 2 、 Figure 4 and Figure 5As shown, the traction rod 10 may be provided with a mating groove 11, the opening of the mating groove 11 facing the latch 20, and a mating rod 12 is provided in the mating groove 11. The latch 30 is provided in the mating groove 11, the first side plate 34 is provided with a first mating hole 341, the second side plate 35 is provided with a second mating hole 351, and the mating rod 12 passes through the first mating hole 341 and the second mating hole 351.

[0099] The traction rod 10 is provided with a mating groove 11 facing the latch 20, so that the re-latch 30 can be placed in the mating groove 11, allowing the re-latch 30 to face the latch 20. This facilitates the mating between the re-latch 30 and the latch 20, enabling the operating mechanism 100 to work normally.

[0100] In this application, the re-clamp 30 can be connected to the traction rod 10 through the mating rod 12 in the mating groove 11. Specifically, the re-clamp 30 is disposed in the mating groove 11, and the mating rod 12 can pass through the first mating hole 341 and the second mating hole 351 through the first side plate 34 and the second side plate 35. At the same time, the re-clamp 30 and the traction rod 10 can also be fixed by fasteners 50, so that the traction rod 10 can drive the re-clamp 30 to rotate.

[0101] Specifically, such as Figure 2 and Figure 4 As shown, the groove wall of the mating groove 11 is provided with a first fixing hole 111, and the support plate 33 is provided with a second fixing hole 331. The fastener 50 can be inserted into the first fixing hole 111 and the second fixing hole 331. In this way, the re-clamp 30 can be fixed on the traction rod 10, which makes it easy for the traction rod 10 to drive the re-clamp 30 to rotate, so as to realize the tripping of the circuit breaker.

[0102] In some embodiments, such as Figure 1 and Figure 8 As shown, the operating mechanism 100 may further include a bracket 60 and a torsion spring 70. The bracket 60 serves as a support component in the operating mechanism 100, providing mounting positions and support for components such as the latch 20, trip latch 40, and traction rod 10, thus ensuring stable installation of each part of the operating mechanism 100. The torsion spring 70 connects the bracket 60 and the re-latch 30, providing driving force to the re-latch 30 during circuit breaker reclosing, facilitating the switching of the circuit breaker from tripping to reclosing.

[0103] The traction rod 10 can be rotatably connected to the bracket 60 via the mating rod 12 to facilitate its installation. The mating rod 12 also passes through the re-clamp 30; therefore, both the re-clamp 30 and the traction rod 10 can be installed on the bracket 60 via the mating rod 12, making their installation relatively convenient.

[0104] In this embodiment, the re-clasp 30 is located inside the bracket 60, meaning that the bracket 60 has space inside to accommodate the re-clasp 30. This reduces the possibility that a portion of the bracket 60 is located between the re-clasp 30 and the latch 20, potentially affecting the fit between the re-clasp 30 and the latch 20.

[0105] It should be noted that, in addition to the traction rod 10 and the re-clamp 30, the locking buckle 20 and the jump buckle 40 can also be installed via the bracket 60. Both the locking buckle 20 and the jump buckle 40 are located within the space inside the bracket 60. The locking buckle 20 is rotatably connected to the bracket 60 via a pivot, and the jump buckle 40 is rotatably installed on the bracket 60 via another pivot.

[0106] In addition, such as Figure 1 As shown, the operating mechanism 100 also includes an upper connecting rod 80 and a lower connecting rod 90. The upper connecting rod 80 is rotatably connected to the trip lever 40, and one end of the lower connecting rod 90 is rotatably connected to the upper connecting rod 80, while the other end can be connected to the moving contact. When the circuit breaker trips, the rotation of the trip lever 40 can drive the lower connecting rod 90 to rotate via the upper connecting rod 80, thereby causing the lower connecting rod 90 to actuate the moving contact and separate it from the stationary contact.

[0107] It is understandable that the connection method between the upper link 80, the lower link 90, and the bracket 60 and the jump buckle 40 can be referred to the existing technology, and will not be elaborated here.

[0108] In the embodiments of this application, the buckle 30 can be configured in different ways to cooperate with the torsion spring 70. Here, the following two methods are used as examples for explanation.

[0109] Method 1, such as Figure 2 and Figure 8 As shown, a mating boss 36 is provided on the side of the first side plate 34 away from the first boss 31. A torsion spring 70 passes through the mating rod 12. One torsion arm of the torsion spring 70 abuts against the mating boss 36, and the other torsion arm of the torsion spring 70 abuts against the side of the bracket 60 near the first side plate 34.

[0110] Thus, a mating boss 36 extending away from the latch 20 can be formed on the first side plate 34. The mating boss 36 can provide an operating position for one of the torsion arms of the torsion spring 70 so that the torsion spring 70 can apply force to the re-latch 30 through the mating boss 36.

[0111] When the circuit breaker trips, the traction rod 10 can rotate the re-clamp 30 under the action of external force, while simultaneously compressing the torsion spring 70, allowing the torsion spring 70 to store elastic potential energy. When the circuit breaker switches from tripping to reclosing, the torsion spring 70 can release its elastic potential energy at the re-clamp 30, allowing the re-clamp 30 to rotate under the action of the torsion spring 70 and drive the traction rod 10 to reset. In this application, the torsion spring 70 can reduce the possibility of accidental tripping of the circuit breaker and provide a driving force to the re-clamp 30 when the circuit breaker recloses, facilitating the re-clamp 30 to re-engage with the latch 20.

[0112] like Figure 9 The diagram illustrates a re-fastening mechanism in the related art, wherein the re-fastening mechanism has an outwardly folded portion, which can abut against a torsion spring. Figure 9 Point A in the middle is the folded part. Compared with the solution in this application that provides a mating boss 36 on the first side plate 34, this arrangement in the related technology makes the structure of the snap-fit ​​30 more complex.

[0113] That is, the setting of the boss 36 in this application can simplify the structure of the snap fastener 30 while satisfying the installation of the torsion spring 70, and can reduce the design and manufacturing cost of the snap fastener 30.

[0114] Method 2: A mating boss 36 is provided on the side of the second side plate 35 away from the second boss 32. A torsion spring 70 passes through the mating rod 12. One torsion arm of the torsion spring 70 abuts against the mating boss 36, and the other torsion arm of the torsion spring 70 abuts against the side of the bracket 60 near the second side plate 35.

[0115] Thus, a mating boss 36 extending away from the latch 20 can be formed on the second side plate 35. The mating boss 36 can provide an operating position for one of the torsion arms of the torsion spring 70 so that the torsion spring 70 can apply force to the re-latch 30 through the mating boss 36.

[0116] Of course, in addition to the methods one and two mentioned above, methods one and two can also be combined. That is, a mating boss 36 can be provided on the first side plate 34, and a mating boss 36 can also be provided on the second side plate 35. In this way, a torsion spring 70 can be provided on each side of the re-clamp 30, and both torsion springs 70 can apply force to the re-clamp 30, further facilitating the reclosing of the circuit breaker.

[0117] In summary, the design of the operating mechanism 100 in this application can reduce the friction between the re-clamp 30 and the latch 20, thereby reducing the possibility that excessive wear between the re-clamp 30 and the latch 20 after long-term use of the circuit breaker could affect their coordination. This reduces the likelihood of the operating mechanism 100 becoming stuck or slipping, improving the reliability of the circuit breaker.

[0118] In addition, this application also provides a circuit breaker, which includes the operating mechanism 100 in any of the above embodiments.

[0119] In a circuit breaker equipped with an operating mechanism 100, the coordination between the re-clamp 30 and the latch 20 in the operating mechanism 100 is relatively reasonable, which can reduce the friction between the re-clamp 30 and the latch 20, reduce the possibility that the coordination between the re-clamp 30 and the latch 20 will be affected after long-term use of the circuit breaker, and improve the reliability of the circuit breaker operation.

[0120] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An operating mechanism for application to a circuit breaker, characterized by, The operating mechanism includes: A traction rod, which is rotatable; A latch is provided opposite to the traction rod. The latch has a first slot and a second slot on the side facing the traction rod. The first slot and the second slot are spaced apart along the axial direction of the traction rod. The second buckle is connected to the side of the traction rod facing the lock and can rotate with the traction rod. The side of the second buckle facing the lock is provided with a first boss and a second boss. The circuit breaker can switch between tripping and reclosing. When the circuit breaker is reclosing, both the first boss and the second boss abut against the side of the latch facing the reclosing. When the circuit breaker trips, the first boss is embedded in the first slot, and the second boss is embedded in the second slot.

2. The operating mechanism according to claim 1, characterized in that A first guide platform is connected to the side of the first boss away from the axis of the traction rod. In the distribution direction of the first guide platform and the first boss, the projection of the first guide platform is located inside the projection of the first boss. When the circuit breaker is reclosed, the first guide platform is embedded in the first slot.

3. The operating mechanism according to claim 2, characterized in that The connection between the first boss and the first guide platform is an arc structure.

4. The operating mechanism of claim 2, wherein The first guide platform has a first side facing the first boss and a second side away from the first boss; The size of the first guide platform gradually decreases from the first side to the second side.

5. The operating mechanism of claim 1, wherein A second guide platform is connected to the side of the second protrusion away from the axis of the traction rod. In the distribution direction of the second guide platform and the second protrusion, the projection of the second guide platform is located inside the projection of the second protrusion, and the second guide platform is embedded in the second slot.

6. The operating mechanism of claim 1, wherein The operating mechanism also includes a jump buckle, which is located on the side of the latch opposite to the re-latch; The latch is provided with a snap-fit ​​groove, which is located between the first snap-fit ​​groove and the second snap-fit ​​groove. The side of the jump buckle facing the latch is provided with a snap-fit ​​platform. When the circuit breaker is re-closed, the locking platform is embedded in the locking slot; when the circuit breaker is tripped, the locking platform is disengaged from the locking slot.

7. The operating mechanism of claim 1, wherein The re-fastening includes a support plate, a first side plate, and a second side plate. The first side plate and the second side plate are connected to the traction rod at a distance, and the support plate is connected between the first side plate and the second side plate. The first boss is connected to the side of the first side plate facing the latch, and the second boss is connected to the side of the second side plate facing the latch.

8. The operating mechanism of claim 7, wherein The traction rod is provided with a mating groove, the opening of the mating groove faces the latch, and a mating rod is provided in the mating groove; The re-fastener is disposed in the mating groove, the first side plate is provided with a first mating hole, the second side plate is provided with a second mating hole, and the mating rod passes through the first mating hole and the second mating hole; The groove wall of the mating groove is provided with a first fixing hole, and the support plate is provided with a second fixing hole. Fasteners are inserted into the first fixing hole and the second fixing hole.

9. The operating mechanism of claim 8, wherein The operating mechanism also includes a bracket and a torsion spring. The traction rod is rotatably connected to the bracket through the cooperating rod, and the re-fastener is located inside the bracket. The first side plate has a mating boss on the side opposite to the first boss. The torsion spring passes through the mating rod. One torsion arm of the torsion spring abuts against the mating boss, and the other torsion arm of the torsion spring abuts against the side of the bracket near the first side plate. And / or, the second side plate is provided with a mating boss on the side opposite to the second boss, the torsion spring passes through the mating rod, one torsion arm of the torsion spring abuts against the mating boss, and the other torsion arm of the torsion spring abuts against the side of the bracket near the second side plate.

10. A circuit breaker characterized by, The circuit breaker includes the operating mechanism according to any one of claims 1-9.

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