A circuit breaker

Abstract

The application provides a circuit breaker, relates to the technical field of switches, and is convenient for electrically connecting adjacent circuit breakers and can save wiring cost. The circuit breaker comprises a shell, a first baffle structure and a second baffle structure. The shell has adjacent first and second surfaces, the first surface is provided with an operation opening, and the second surface is provided with a wiring opening. The first baffle structure comprises a first connecting plate and two first wing plates. The first connecting plate is attached to the first surface, and the first connecting plate is provided with a first avoiding hole corresponding to the operation opening. The first connecting plate and the two first wing plates form a first U-shaped space. The second baffle structure comprises a second connecting plate and two second wing plates. The second connecting plate is attached to the second surface, and the second connecting plate is provided with a second avoiding hole corresponding to the wiring opening. The second connecting plate and the two second wing plates form a second U-shaped space. The second wing plate is provided with a fracture guide groove for forming a peelable area on the second wing plate.

Description

Technical Field

[0001] This application relates to the field of switch technology, specifically to a circuit breaker. Background Technology

[0002] A circuit breaker is an important electrical protection device that can close, carry, and interrupt current under normal circuit conditions. In the event of an overload or short circuit in the circuit where the circuit breaker is located, it can disconnect the circuit to ensure electrical safety.

[0003] With the development of the new energy industry, the load voltage requirements for DC circuit breakers are becoming more stringent, and conventional circuit breakers cannot meet the demands for electrical safety. Current technology typically employs insulating baffles on the circuit breaker to increase electrical clearances and creepage distances, thereby ensuring electrical safety.

[0004] Currently, the rated load voltage of a single-pole circuit breaker often cannot meet the circuit carrying capacity requirements. In practice, multiple circuit breakers are often connected in series to increase the voltage carrying capacity.

[0005] However, the installation of insulating baffles makes it inconvenient to connect adjacent circuit breakers, resulting in higher wiring costs. Utility Model Content

[0006] This application provides a circuit breaker that facilitates electrical connection between adjacent circuit breakers while saving wiring costs.

[0007] To achieve the above objectives, this application provides a circuit breaker, including a housing, a first baffle structure, and a second baffle structure. The housing has adjacent first and second surfaces. An operating port is formed on the first surface, and a wiring port is formed on the second surface. The first baffle structure includes a first connecting plate and two first wing plates disposed opposite to each other on both sides of the first connecting plate. The first connecting plate is attached to the first surface and has a first clearance hole corresponding to the operating port. A first U-shaped space is formed between the first connecting plate and the two first wing plates, with the opening of the first U-shaped space facing away from the first surface. The second baffle structure includes a second connecting plate and two second wing plates disposed opposite to each other on both sides of the second connecting plate. The second connecting plate is attached to the second surface and has a second clearance hole corresponding to the wiring port. A second U-shaped space is formed between the second connecting plate and the two second wing plates, with the opening of the second U-shaped space facing away from the second surface. The first connecting plate is connected to the second connecting plate, and the first wing plate is connected to the corresponding second wing plate. A fracture guide groove is provided on the second wing plate to form a peelable area on the second wing plate.

[0008] When the above technical solution is adopted, the setting of the first baffle structure and the second baffle structure can increase the electrical clearance and creepage distance between the operating port and the wiring port, thus ensuring electrical safety.

[0009] Meanwhile, when multiple circuit breakers are used in series, the arrangement of the first and second flanges can significantly increase the electrical clearance and creepage distance between two adjacent operating ports or two adjacent wiring ports, thereby improving electrical safety.

[0010] The second wing plate is provided with a fracture guide groove, which is used to form a peelable area on the second wing plate. Through the fracture guide groove, the operator can directly remove the peelable area from the second wing plate.

[0011] At this time, when multiple circuit breakers are used in series, the two adjacent strippable areas on the two adjacent second baffle structures can be removed. In actual wiring, the wires can pass directly through the two adjacent second baffles, which facilitates the electrical connection of adjacent circuit breakers, reduces wiring difficulty, shortens wire length, and saves wiring costs.

[0012] In one possible implementation, the second baffle structure further includes a partition, which comprises a first side, a second side, and a third side, wherein the first and second sides are disposed opposite to each other, and the third side is located between the first and second sides. The first and second sides are respectively connected to two second wing plates, and the third side is connected to a second connecting plate. The partition is located on the side of the second clearance hole closer to the first connecting plate.

[0013] When adopting the above technical solution, the partition not only increases the electrical clearance and creepage distance between the operating port and the wiring port, reducing the risk of electric shock to operators during circuit breaker use, but also acts as a reinforcing rib, increasing the strength of the second baffle structure. Furthermore, when the second baffle structure is injection molded, it reduces the deformation of the second flange during the injection molding process.

[0014] In one possible implementation, a first extension is provided on the first connecting plate, extending from the first connecting plate in a direction away from the first wing plate. The first extension is provided with one of a first latch and a first slot that cooperate with each other, and the housing is provided with the other of a first latch and a first slot, for engaging the first baffle structure with the housing.

[0015] When the above technical solution is adopted, the first baffle structure and the housing are interlocked, indicating that the first baffle structure and the housing are detachably connected. When the first baffle structure or the housing needs maintenance, the first baffle structure can be removed from the housing for inspection and maintenance separately. When the first baffle structure or the housing needs replacement, it can be replaced individually, saving costs.

[0016] When the first buckle and the first slot are engaged, the first baffle structure is snapped into the housing. No additional installation tools are needed, and it can be completed in one step, which can reduce the number of parts and installation steps, simplify the structure, and save time and cost.

[0017] In one possible implementation, a first slot is provided on the first extension, and a first latch is provided on the housing. The first slot extends through the first extension on the side near the second connecting plate.

[0018] When using the above technical solution, after the first baffle structure and the housing are snapped together, it is easy to observe whether the first buckle and the first slot are properly engaged. Simultaneously, the first slot has a through opening, creating a gap between the first extension and the housing at the through opening. When it is necessary to disassemble the first baffle structure and the housing, a tool can be applied at the through opening to pry the first extension, causing the first buckle to disengage from the first slot, facilitating the disassembly of the first baffle structure and the housing.

[0019] In one possible implementation, a first slot is provided on the first extension, and a first buckle is provided on the housing. A first groove is provided on the housing, and the first buckle is disposed in the first groove.

[0020] When the above technical solution is adopted, after the first baffle structure is installed on the housing, the first extension can be located in the first groove, and the setting of the first extension will not increase the space occupied by the circuit breaker.

[0021] In one possible implementation, a second extension is provided on the second connecting plate, extending away from the second wing plate. The second extension is provided with one of a second latch and a second slot that cooperate with each other, and the housing is provided with the other of the second latch and the second slot, for engaging the second baffle structure with the housing.

[0022] When the above technical solution is adopted, the second baffle structure is snapped into the housing, indicating that the second baffle structure and the housing are detachably connected. When the second baffle structure or the housing requires maintenance, the second baffle structure can be disassembled from the housing for inspection and maintenance of both. When the second baffle structure or the housing needs replacement, both can be replaced separately, saving costs.

[0023] When the second buckle and the second slot are engaged, the second baffle structure is snapped into the housing. No additional installation tools are required, and the installation can be completed in one step, reducing the number of parts and installation steps, simplifying the structure, and saving time and costs.

[0024] In one possible implementation, a second slot is provided on the first extension, and a second buckle is provided on the housing. A second groove is provided on the housing, and the second buckle is disposed within the second groove.

[0025] When the above technical solution is adopted, after the second baffle structure is installed on the housing, the second extension can be located in the second groove. The setting of the second extension will not increase the space occupied by the circuit breaker in the direction from the third surface to the fourth surface.

[0026] In one possible implementation, a first chamfer is provided on the side wall of the second groove away from the second connecting plate.

[0027] When the above technical solution is adopted, a gap can be formed between the second extension and the housing at the first chamfer position. When it is necessary to disassemble the second baffle structure and the housing, a tool can be applied at the first chamfer position to pry the second extension, so that the second buckle is disengaged from the second slot, which facilitates the disassembly and separation of the second baffle structure and the housing.

[0028] In one possible implementation, the side of the second extension away from the first connecting plate is provided with a second chamfer.

[0029] When adopting the above technical solution, firstly, during the connection process between the second baffle structure and the housing, the scratches on the housing caused by the second extension can be reduced, which is beneficial to protecting the housing. Secondly, a gap can be formed between the second extension and the housing at the second chamfer position. When it is necessary to disassemble the second baffle structure and the housing, a tool can be applied at the second chamfer position to pry the second extension, causing the second buckle to disengage from the second slot, which facilitates the disassembly and separation of the second baffle structure and the housing.

[0030] In one possible implementation, the size of the second extension is larger than the size of the second clearance hole in the extending direction of the second U-shaped space.

[0031] When adopting the above technical solution, electrical clearance and creepage distance are increased to ensure electrical isolation of the connection interface. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the circuit breaker provided in an embodiment of this application.

[0033] Figure 2 An exploded view of a circuit breaker provided in an embodiment of this application.

[0034] Figure 3 This is a partial schematic diagram of a circuit breaker provided in an embodiment of this application.

[0035] Figure 4Schematic diagram of the positional relationship between the first baffle structure and the second baffle structure provided in the embodiments of this application Figure 1 .

[0036] Figure 5 Schematic diagram of the positional relationship between the first baffle structure and the second baffle structure provided in the embodiments of this application Figure 2 .

[0037] Figure 6 for Figure 5 Enlarged diagram of point A in the middle.

[0038] Figure 7 Schematic diagram of the positional relationship between the first baffle structure and the second baffle structure provided in the embodiments of this application Figure 3 .

[0039] Explanation of reference numerals in the attached figures: 1-Housing, 11-First surface, 12-Second surface, 13-Operating port, 14-Wiring port, 15-First latch, 151 - Fourth chamfer, 16 - First groove, 17 - Second snap, 18 - Second groove, 181 - First chamfer, 19 - Third surface. 2-First baffle structure, 21-First connecting plate, 211-First clearance hole, 22-First wing plate, 23-First extension, 231-First slot, 232-Third chamfer, 3-Second baffle structure, 31-Second connecting plate, 311-Second clearance hole 32-Second wing plate, 321-Fracturing guide groove, 322-Peelable area, 33-Baffle plate, 34-Second extension. 341 - Second slot, 342 - Second chamfer, 343 - Fifth chamfer. Detailed Implementation

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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).

[0046] Please refer to Figure 1 and Figure 2 As shown in the figure, this application provides a circuit breaker, which includes a housing 1, a first baffle structure 2, and a second baffle structure 3.

[0047] In practice, the materials of the housing 1, the first baffle structure 2, and the second baffle structure 3 can be insulating materials. For example, the housing 1, the first baffle structure 2, and the second baffle structure 3 can all be made of insulating plastic, but the actual implementation is not limited to this.

[0048] Furthermore, the specific structure and dimensions of the shell 1, the first baffle structure 2, and the second baffle structure 3 are not specifically limited here.

[0049] In practice, please refer to Figure 3 As shown, the housing 1 has an adjacent first surface 11 and a second surface 12. Furthermore, it should be noted that the housing 1 provided in this embodiment also has a third surface 19 and a fourth surface (not shown in the figure) disposed opposite to each other. The third surface 19 and the fourth surface are located on opposite sides of the first surface 11, and also on opposite sides of the second surface 12.

[0050] Please continue reading. Figure 3 As shown, an operation port 13 is provided on the first surface 11, and a wiring port 14 is provided on the second surface 12.

[0051] It should be noted that the operation port 13 and the wiring port 14 are designed to facilitate operators to use tools such as screwdrivers to electrically connect the circuit breaker to an external power source or external equipment.

[0052] Specifically, when it is necessary to connect the circuit breaker to an external power source or external equipment using wires and screws, one end of the wire can be inserted into the housing 1 through the connection port 14, and the screw end can be inserted into the housing 1 through the operating port 13. At this time, the operating end of the screwdriver can be aligned with the nut of the screw, and the screwdriver can be rotated to finally connect the wire to the circuit breaker.

[0053] like Figure 4 and Figure 6 As shown, the first baffle structure 2 includes a first connecting plate 21 and two first wing plates 22 disposed opposite to each other on both sides of the first connecting plate 21.

[0054] In a specific implementation, one side of the first wing plate 22 is connected to one side of the first connecting plate 21. The first wing plate 22 and the first connecting plate 21 can be fixedly connected. For example, the first wing plate 22 and the first connecting plate 21 can be connected together by welding, snap-fitting, or bonding.

[0055] Of course, the first connecting plate 21 and the two first wing plates 22 can also be integrally formed. The specific connection method between the first connecting plate 21 and the first wing plates 22 is not limited here, and the actual situation shall prevail.

[0056] The first connecting plate 21 is attached to the first surface 11, and the first connecting plate 21 is parallel to the first surface 11 and is disposed on the first surface 11. In actual operation, the first connecting plate 21 can be disposed on the first surface 11 by means of welding, riveting or screw connection.

[0057] The first connecting plate 21 has a first clearance hole 211 corresponding to the operating port 13. The first clearance hole 211 corresponds to the operating port 13, which facilitates the insertion or removal of screws or screwdrivers into or out of the housing 1 through the operating port 13 and the first clearance hole 211. The size of the first clearance hole 211 can be greater than or equal to the size of the operating port 13.

[0058] Please combine Figure 1 , Figure 4 and Figure 5 As shown, a first U-shaped space is formed between the first connecting plate 21 and the two first wing plates 22, and the opening of the first U-shaped space is away from the first surface 11.

[0059] like Figure 4 and Figure 5 As shown, the second baffle structure 3 includes a second connecting plate 31 and two second wing plates 32 disposed opposite to each other on both sides of the second connecting plate 31.

[0060] In a specific implementation, one side of the second wing plate 32 is connected to one side of the second connecting plate 31. The second wing plate 32 and the second connecting plate 31 can be fixedly connected. For example, the second wing plate 32 and the second connecting plate 31 can be connected together by welding, snap-fitting, or bonding.

[0061] Of course, the second connecting plate 31 and the two second wing plates 32 can also be integrally formed. The specific connection method between the second connecting plate 31 and the second wing plates 32 is not limited here, and shall be subject to the actual situation.

[0062] The second connecting plate 31 is attached to the second surface 12, and the second connecting plate 31 is parallel to the second surface 12 and is disposed on the second surface 12. In actual operation, the second connecting plate 31 can be disposed on the second surface 12 by means of welding, riveting or screw connection.

[0063] The second connecting plate 31 has a second clearance hole 311 corresponding to the wiring port 14. The second clearance hole 311 corresponds to the wiring port 14, and one end of the wire that connects the circuit breaker to the external power supply or external equipment can extend into or out of the housing 1 through the second clearance hole 311 and the wiring port 14. The size of the second clearance hole 311 can be greater than or equal to the size of the wiring port 14.

[0064] A second U-shaped space is formed between the second connecting plate 31 and the two second wing plates 32, and the opening of the second U-shaped space faces away from the second surface 12. The first connecting plate 21 is connected to the second connecting plate 31, and the first wing plate 22 is connected to the corresponding second wing plate 32.

[0065] In fact, in the embodiments provided in this application, the first surface 11 and the second surface 12 are perpendicular. The first connecting plate 21 is parallel to the first surface 11, and the first wing plate 22 is perpendicular to the first connecting plate 21. Furthermore, the second connecting plate 31 is parallel to the second surface 12, and the second wing plate 32 is perpendicular to the second connecting plate 31.

[0066] like Figure 2 , Figure 4 and Figure 5 As shown, the first U-shaped space and the second U-shaped space are connected, and the first baffle structure 2 and the second baffle structure 3 are generally L-shaped.

[0067] The first connecting plate 21 and the second connecting plate 31 can be fixedly connected. For example, the first connecting plate 21 and the second connecting plate 31 can be connected together by welding, snap-fitting or gluing.

[0068] The first wing plate 22 and the corresponding second wing plate 32 can be fixedly connected. For example, the first wing plate 22 and the corresponding second wing plate 32 can be connected together by welding, snap-fitting or bonding.

[0069] In the embodiments provided in this application, the first baffle structure 2 and the second baffle structure 3 can be integrally formed.

[0070] This not only avoids stress concentration issues caused by screws or welding connections, ensuring higher dimensional accuracy and consistency, and improving the structural strength of the connectors, but also eliminates the need for machining the connectors, reducing material usage and preventing waste.

[0071] Furthermore, the first baffle structure 2 and the second baffle structure 3 are integrally machined, which reduces the number of connection points, lowers the risk of failure due to loose connections, corrosion, or fatigue, and improves fatigue resistance. In addition, it reduces the number of parts and assembly steps of the connectors, simplifying the operation process.

[0072] Furthermore, the first baffle structure 2 and the second baffle structure 3 are integrally formed, which can ensure that there is no gap at the connection position of the first baffle structure 2 and the second baffle structure 3. This can maximize the electrical clearance and creepage distance between the wiring port 14 and the operating port 13, effectively reducing short circuit faults and arcing breakdown caused by insufficient electrical clearance or creepage distance, thereby ensuring the stable operation of the circuit breaker and the safety of the power system.

[0073] The first baffle structure 2 and the second baffle structure 3 can increase the electrical clearance and creepage distance between the operation port 13 and the wiring port 14, ensuring electrical safety.

[0074] Meanwhile, when multiple circuit breakers are used in series, the arrangement of the first wing plate 22 and the second wing plate 32 can significantly increase the electrical clearance and creepage distance between two adjacent operating ports 13 or two adjacent wiring ports 14, thereby improving electrical safety.

[0075] Please combine Figure 5 and Figure 6 As shown, a fracture guide groove 321 is provided on the second wing plate 32 for forming a peelable area 322 on the second wing plate 32.

[0076] In practice, multiple fracture guide grooves 321 can be set on the second wing plate 32. Through the fracture guide grooves 321, the operator can directly remove the peelable area 322 from the second wing plate 32 to form a third clearance hole on the second wing plate 32.

[0077] When multiple circuit breakers are connected in series, the two adjacent strippable areas 322 on the two adjacent second baffle structures 3 can be removed to form a third clearance hole. In actual wiring, the wires can pass directly through the third clearance hole, which facilitates the electrical connection of adjacent circuit breakers, reduces wiring difficulty, shortens wire length, and saves wiring costs.

[0078] In practice, the size of the peelable area 322 is not specifically limited here. The peelable area 322 can correspond to the second clearance hole 311.

[0079] Specifically, such as Figure 6 As shown, a groove feature can be made on the second wing plate 32 at the position corresponding to the peelable region 322, so that the thickness of the peelable region 322 is less than the thickness of the second wing plate 32, thereby reducing the strength of the second baffle structure 3 in the peelable region 322. At the same time, a triangular notch is provided at the boundary of the groove feature to form a fracture guide groove 321, which can be manually operated by the operator to directly remove the peelable region 322 from the second wing plate 32, forming a third clearance hole at the position of the peelable region 322.

[0080] It should be noted that the thickness of the second wing 32 refers to the size of the second wing 32 in the direction from one second wing 32 to the other.

[0081] The circuit breaker provided in this application embodiment can install the first baffle structure 2 and the second baffle structure 3 on the housing 1 without changing the structure and size of the components inside the housing 1, thereby upgrading the electrical safety of the product. No redesign is required, which reduces the research and development cycle and manufacturing costs.

[0082] In practice, the wiring port 14 generally includes an inlet and an outlet, and the inlet and outlet are respectively located on two opposite surfaces of the housing 1. For example, when the inlet is located on the second surface 12, the outlet is located on the surface of the housing 1 opposite to the second surface 12.

[0083] In fact, two operation ports 13 are provided on the first surface 11, which correspond to the inlet and outlet ports respectively.

[0084] In this case, there are two second baffle structures 3 and two first baffle structures 2. The two first baffle structures 2 are arranged opposite each other, and the two second baffle structures 3 are arranged opposite each other.

[0085] In one possible implementation, such as Figure 5 As shown, the second baffle structure 3 also includes a partition 33, which includes a first side, a second side and a third side, wherein the first side and the second side are arranged opposite to each other, and the third side is located between the first side and the second side.

[0086] The first and second sides are respectively connected to the two second wing plates 32, and the third side is connected to the second connecting plate 31. The partition 33 is located on the side of the second clearance hole 311 closer to the first connecting plate 21, that is, the partition 33 is located between the operation port 13 and the wiring port 14.

[0087] It should be noted that there are no gaps between the partition 33 and the second wing plate 32, or between the partition 33 and the second connecting plate 31, in order to increase the electrical clearance and creepage distance between the operating port 13 and the wiring port 14, and to ensure electrical safety.

[0088] In practice, the partition 33 and the second connecting plate 31, as well as the partition 33 and the second wing plate 32, can be connected by welding or bonding, but in practice, it is not limited to this.

[0089] In actual operation, the partition 33, the second connecting plate 31, and the second wing plate 32 can be integrally formed, that is, the second baffle structure 3 is an integral structure.

[0090] This ensures higher dimensional accuracy and consistency, enhancing the structural strength of the second baffle structure 3. Simultaneously, it ensures no gaps between the partition 33 and the second wing plate 32, or between the partition 33 and the second connecting plate 31. This maximizes the electrical clearance and creepage distance between the wiring port 14 and the operating port 13, effectively reducing short-circuit faults and arcing breakdowns caused by insufficient electrical clearance or creepage distance, thereby guaranteeing the stable operation of the circuit breaker and the safety of the power system.

[0091] The partition 33 not only increases the electrical clearance and creepage distance between the operating port 13 and the wiring port 14, reducing the risk of electric shock to operators during circuit breaker use, but also acts as a reinforcing rib, increasing the strength of the second baffle structure 3. Furthermore, it reduces deformation of the second wing plate 32 during injection molding when the second baffle structure 3 is injection molded.

[0092] As an example, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, a first extension 23 is provided on the first connecting plate 21, and the first extension 23 extends from the first connecting plate 21 in a direction away from the first wing plate 22.

[0093] In a specific implementation, the first extension 23 can be a plate-like structure. The first extension 23 can be connected to the first connecting plate 21 by welding, snap-fitting, or bonding.

[0094] In the embodiments provided in this application, the first baffle structure 2 is an integral structure. The first connecting plate 21, the first wing plate 22 and the first extension 23 can be integrally injection molded to form the first baffle structure 2 in one process.

[0095] The first extension 23 is provided with one of the first buckle 15 and the first slot 231 that cooperate with each other, and the housing 1 is provided with the other of the first buckle 15 and the first slot 231, for engaging the first baffle structure 2 with the housing 1.

[0096] The first baffle structure 2 and the housing 1 are interlocked, indicating that the connection between the first baffle structure 2 and the housing 1 is detachable. When the first baffle structure 2 or the housing 1 needs maintenance, the first baffle structure 2 can be removed from the housing 1 for inspection and maintenance. When the first baffle structure 2 or the housing 1 needs replacement, it can be replaced separately, saving costs.

[0097] When the first buckle 15 and the first slot 231 are engaged, the first baffle structure 2 is engaged with the housing 1. No additional installation tools are required, and the process can be completed in one step, which can reduce the number of parts and installation steps, simplify the structure, and save time and cost.

[0098] In a specific implementation, a first buckle 15 can be provided on the first extension 23, and a corresponding first slot 231 can be provided on the housing 1. Alternatively, a first slot 231 can be provided on the first extension 23, and a corresponding first buckle 15 can be provided on the housing 1.

[0099] In addition, there can be multiple first extensions 23, with at least two first extensions 23 respectively disposed on both sides of the first connecting plate 21.

[0100] When the first extension 23 is provided with a first slot 231 and the housing 1 is provided with a corresponding first buckle 15, and the number of the first extensions 23 is multiple, the first buckle 15 can be provided on both the third surface 19 and the fourth surface to enhance the stability of the connection between the first baffle structure 2 and the housing 1.

[0101] In addition, since the first connecting plate 21 is connected to the second connecting plate 31, and the first wing plate 22 is connected to the corresponding second wing plate 32, when the first baffle structure 2 is connected to the shell 1, the second baffle structure 3 is connected to the shell 1 through the first baffle structure 2.

[0102] Please refer to Figure 7 As shown, a third chamfer 232 is provided at the end of the first extension 23 that is away from the second connecting plate 31 and on the side of that end that is close to the housing 1.

[0103] This design has two advantages. First, it reduces scratches on the housing 1 caused by the first extension 23 during the connection of the first baffle structure 2 and the housing 1, thus protecting the housing 1. Second, a gap can be formed between the first extension 23 and the housing 1 at the third chamfer 232. When it is necessary to disassemble the first baffle structure 2 and the housing 1, a tool can be applied at the third chamfer 232 to pry the first extension 23, causing the first buckle 15 to disengage from the first slot 231, facilitating the disassembly and separation of the first baffle structure 2 and the housing 1.

[0104] As a feasible approach, when the first extension 23 is provided with a first slot 231 and the housing 1 is provided with a first buckle 15, the first slot 231 penetrates the side of the first extension 23 near the second connecting plate 31, so that the first slot 231 has a through opening.

[0105] Thus, after the first baffle structure 2 and the housing 1 are engaged, it is easy to observe whether the first buckle 15 and the first slot 231 are properly engaged. Simultaneously, a gap is formed between the first extension 23 and the housing 1 at the through-hole position. When it is necessary to disassemble the first baffle structure 2 and the housing 1, a tool can be applied at the through-hole position to pry the first extension 23, causing the first buckle 15 to disengage from the first slot 231, facilitating the disassembly of the first baffle structure 2 and the housing 1.

[0106] In some embodiments, a first slot 231 is provided on the first extension 23, and a first buckle 15 is provided on the housing 1. A first groove 16 is provided on the housing 1, and the first buckle 15 is disposed in the first groove 16.

[0107] Thus, after the first baffle structure 2 is installed on the housing 1, the first extension 23 can be located in the first groove 16, and the arrangement of the first extension 23 will not increase the space occupied by the circuit breaker in the direction from the third surface 19 to the fourth surface.

[0108] In specific implementation, the intersection of the first surface 11 and the second surface 12 is defined as the first corner of the housing 1. In the embodiment provided in this application, a fourth chamfer 151 is provided at the position corresponding to the first corner of the first buckle 15, such as... Figure 2 and Figure 3 As shown. At the same time, the end of the first extension 23 away from the first connecting plate 21 is provided with a rounded corner. During the process of installing the first baffle structure 2 on the housing 1, the fourth chamfer 151 can cooperate with the rounded corner on the first extension 23. The fourth chamfer 151 plays a guiding role so that the first connecting plate 21 can move closer to the first surface 11, which helps the installation of the first baffle structure 2.

[0109] As one possible implementation, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, a second extension 34 is provided on the second connecting plate 31, and the second extension 34 extends from the second connecting plate 31 in a direction away from the second wing plate 32.

[0110] In a specific implementation, the second extension 34 can be a plate-like structure. The second extension 34 can be connected to the second connecting plate 31 by welding, snap-fitting, or bonding.

[0111] In the embodiments provided in this application, the second baffle structure 3 is an integral structure. The second connecting plate 31, the second wing plate 32, the second extension 34 and the partition 33 can be integrally injection molded to form the second baffle structure 3 in one process.

[0112] The second extension 34 is provided with one of the second buckle 17 and the second slot 341 that cooperate with each other, and the housing 1 is provided with the other of the second buckle 17 and the second slot 341, for engaging the second baffle structure 3 with the housing 1.

[0113] The second baffle structure 3 is engaged with the housing 1, indicating that the connection between the second baffle structure 3 and the housing 1 is detachable. When either the second baffle structure 3 or the housing 1 requires maintenance, the second baffle structure 3 can be removed from the housing 1 for inspection and maintenance. When either the second baffle structure 3 or the housing 1 needs replacement, they can be replaced individually, saving costs.

[0114] When the second buckle 17 and the second slot 341 are engaged, the second baffle structure 3 is engaged with the housing 1. No additional installation tools are required, and the installation can be completed in one step, which can reduce the number of parts and installation steps, simplify the structure, and save time and cost.

[0115] In a specific implementation, a second latch 17 can be provided on the second extension 34, and a corresponding second slot 341 can be provided on the housing 1. Alternatively, a second slot 341 can be provided on the second extension 34, and a corresponding second latch 17 can be provided on the housing 1.

[0116] Furthermore, in the embodiments provided in this application, there are two second extensions 34, which are respectively disposed on both sides of the second connecting plate 31. The two second extensions 34 correspond to the third surface 19 and the fourth surface, respectively.

[0117] Please refer to Figure 7 As shown, a fifth chamfer 343 is provided at the end of the second extension 34 away from the second connecting plate 31 and on the side of this end near the housing 1. This arrangement has two advantages: First, it reduces scratches to the housing 1 caused by the second extension 34 during the connection of the second baffle structure 3 and the housing 1, thus protecting the housing 1. Second, a gap can be formed between the second extension 34 and the housing 1 at the fifth chamfer 343. When it is necessary to disassemble the second baffle structure 3 and the housing 1, a tool can be applied at the fifth chamfer 343 to pry the second extension 34, causing the second latch 17 to disengage from the second slot 341, facilitating the disassembly and separation of the second baffle structure 3 and the housing 1.

[0118] In the embodiments provided in this application, please refer to Figures 2 to 4 As shown, a second slot 341 is provided on the first extension 23, and a second buckle 17 is provided on the housing 1. A second groove 18 is provided on the housing 1, and the second buckle 17 is disposed in the second groove 18.

[0119] Thus, after the second baffle structure 3 is installed on the housing 1, the second extension 34 can be located in the second groove 18, and the arrangement of the second extension 34 will not increase the space occupied by the circuit breaker in the direction from the third surface 19 to the fourth surface.

[0120] Additionally, it should be noted that in the embodiments provided in this application, the second slot 341 is a recessed slot to ensure that there are no breaks on the second extension 34, which can maximize the creepage distance and improve electrical safety.

[0121] Multiple second slots 341 can be provided on the second extension 34, and correspondingly, multiple second buckles 17 are provided on the housing 1 to improve the stability of the connection between the second baffle structure 3 and the housing 1.

[0122] In one example, please combine Figure 2 and Figure 3 As shown, a first chamfer 181 is provided on the side wall of the second groove 18 away from the second connecting plate 31.

[0123] Thus, a gap can be formed between the second extension 34 and the housing 1 at the first chamfer 181 position. When it is necessary to disassemble the second baffle structure 3 and the housing 1, a tool can be applied at the first chamfer 181 position to pry the second extension 34, so that the second buckle 17 disengages from the second slot 341, which facilitates the disassembly and separation of the second baffle structure 3 and the housing 1.

[0124] In another example, please refer to Figure 2 , Figure 4 and Figure 7 As shown, a second chamfer 342 is provided on the side of the second extension 34 away from the first connecting plate 21.

[0125] This design has two advantages. First, it reduces scratches on the housing 1 caused by the second extension 34 during the connection of the second baffle structure 3 and the housing 1, thus protecting the housing 1. Second, a gap can be formed between the second extension 34 and the housing 1 at the second chamfer 342. When it is necessary to disassemble the second baffle structure 3 and the housing 1, a tool can be applied at the second chamfer 342 to pry the second extension 34, causing the second latch 17 to disengage from the second slot 341, facilitating the disassembly and separation of the second baffle structure 3 and the housing 1.

[0126] Furthermore, please refer to Figure 4 and Figure 5 As shown, in the extension direction of the second U-shaped space, the size of the second extension 34 is larger than the size of the second clearance hole 311 to increase the electrical clearance and creepage distance, and ensure electrical isolation to the connection port 14.

[0127] In the extending direction of the first U-shaped space, the size of the first slot can be greater than or equal to the size of the second slot.

[0128] Now Figure 2 Taking the placement of the circuit breaker shown as an example, the installation process of the circuit breaker provided in this application will be explained.

[0129] It should be noted that, in the embodiments provided in this application, the first baffle structure 2 and the second baffle structure 3 are integrally injection molded.

[0130] First, you can follow Figure 2The diagram shows the placement of the first baffle structure 2, the second baffle structure 3, and the housing 1. The first extension 23 is located on the side of the first latch 15 near the second surface 12. The first baffle structure 2 and the second baffle structure 3 slide downwards as a whole. During this process, the rounded corners on the first extension 23 can slide downwards along the fourth chamfer 151 until the first connecting plate 21 is in contact with the first surface 11.

[0131] Then, the second connecting plate 31 is slid towards the second surface 12 until the first buckle 15 engages with the first slot 231, the second buckle 17 engages with the second slot 341, and the second connecting plate 31 is in contact with the second surface 12, thereby restricting the movement of the first baffle structure 2 and the second baffle structure 3 relative to the housing 1.

[0132] The first baffle structure 2 and the second baffle structure 3 can reasonably increase the electrical clearance and creepage distance. Both the first baffle structure 2 and the second baffle structure 3 are snapped into the housing 1, making installation and operation convenient.

[0133] 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 secured by fasteners, such as a connection secured by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

Claims

1. A circuit breaker, characterized in that, include: The housing has an adjacent first surface and a second surface, with an operation port on the first surface and a wiring port on the second surface; The first baffle structure includes a first connecting plate and two first wing plates disposed opposite to each other on both sides of the first connecting plate; the first connecting plate is attached to the first surface; the first connecting plate is provided with a first clearance hole corresponding to the operation port; a first U-shaped space is formed between the first connecting plate and the two first wing plates; the opening of the first U-shaped space is away from the first surface; The second baffle structure includes a second connecting plate and two second wing plates disposed opposite each other on both sides of the second connecting plate; the second connecting plate is attached to the second surface; a second clearance hole corresponding to the wiring port is provided on the second connecting plate; a second U-shaped space is formed between the second connecting plate and the two second wing plates; the opening of the second U-shaped space is away from the second surface; the first connecting plate is connected to the second connecting plate, and the first wing plate is connected to the second wing plate on the corresponding side; a fracture guide groove is provided on the second wing plate for forming a peelable area on the second wing plate.

2. The circuit breaker according to claim 1, characterized in that, The second baffle structure further includes a partition, which includes a first side, a second side, and a third side. The first side and the second side are arranged opposite to each other, and the third side is located between the first side and the second side. The first side and the second side are respectively connected to the two second wing plates, and the third side is connected to the second connecting plate. The partition is located on the side of the second clearance hole closer to the first connecting plate.

3. The circuit breaker according to claim 1, characterized in that, The first connecting plate is provided with a first extension portion, which extends from the first connecting plate in a direction away from the first wing plate; the first extension portion is provided with one of a first buckle and a first slot that cooperate with each other, and the housing is provided with the other of the first buckle and the first slot, for engaging the first baffle structure with the housing.

4. The circuit breaker according to claim 3, characterized in that, The first extension is provided with the first slot, and the housing is provided with the first buckle; the first slot passes through the first extension on the side near the second connecting plate.

5. The circuit breaker according to claim 3, characterized in that, The first extension is provided with the first slot, and the housing is provided with the first buckle; the housing is provided with the first groove, and the first buckle is disposed in the first groove.

6. The circuit breaker according to any one of claims 1 to 5, characterized in that, The second connecting plate is provided with a second extension, which extends from the second connecting plate in a direction away from the second wing plate; the second extension is provided with one of a second buckle and a second slot that cooperate with each other, and the housing is provided with the other of the second buckle and the second slot, for engaging the second baffle structure with the housing.

7. The circuit breaker according to claim 6, characterized in that, The second extension is provided with a second slot, and the housing is provided with a second buckle; the housing is provided with a second groove, and the second buckle is disposed in the second groove.

8. The circuit breaker according to claim 7, characterized in that, A first chamfer is provided on the side wall of the second groove away from the second connecting plate.

9. The circuit breaker according to claim 6, characterized in that, The second extension has a second chamfer on the side away from the first connecting plate.

10. The circuit breaker according to claim 6, characterized in that, In the extending direction of the second U-shaped space, the size of the second extension is larger than the size of the second clearance hole.

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