Draw-out circuit breaker

Abstract

Provided in the present application is a draw-out circuit breaker, which comprises a drawer seat and a circuit breaker body. The drawer seat is of a first housing structure having a first containing cavity; a first electronic assembly is arranged on a first bottom plate, the first electronic assembly being a metal member and having high conductivity. The circuit breaker body is in slidable connection to the inside of the first containing cavity, and the circuit breaker body is of a second housing structure having a second containing cavity; a second electronic assembly is arranged on a second bottom plate, the second electronic assembly being a metal member and having high conductivity. Since the second housing structure is in slidable connection to the inside of the first containing cavity, an insulation distance between the first electronic assembly and the second electronic assembly is limited. The side of a second back plate close to the second bottom plate is provided with reinforcing ribs located between a first back plate and the second back plate, which are used for increasing the creepage distance between the first electronic assembly and the second electronic assembly, thereby preventing a risk of breakdown in the draw-out circuit breaker caused by an excessively small distance between the first electronic assembly and the second electronic assembly.

Description

A drawer-type circuit breaker This application claims priority to the Chinese patent application filed with the China Patent Office on February 2, 2024, with application number 2024202653143 and utility model name “A Drawer-Type Circuit Breaker”, the entire contents of which are incorporated by reference into this application. Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a drawer-type circuit breaker. Background Art

[0002] A drawer circuit breaker is a modular circuit breaker used to protect and control circuits. It typically consists of a breaker body and a drawer housing. The breaker body slides into the drawer housing, allowing it to be withdrawn for inspection, replacement, or maintenance without shutting down the entire circuit.

[0003] The drawer-type circuit breakers in the related art are generally suitable for voltages below AC1140V. When they need to be suitable for voltages above AC1500V, the gap between the circuit breaker body and the drawer base is small, resulting in insufficient creepage distance between the circuit breaker body and the drawer base, which in turn causes the problem of easy breakdown during high-voltage testing, resulting in failure of the high-voltage test.

[0004] The present application provides a drawer-type circuit breaker to solve the problem that the gap between the circuit breaker body and the drawer seat is small, thereby causing insufficient creepage distance between the circuit breaker body and the drawer seat, and thus causing easy breakdown during high-voltage testing, and successfully realizes high-voltage testing.

[0005] In a first aspect, the present application provides a drawer-type circuit breaker, comprising: a drawer seat and a circuit breaker body; the drawer seat is a first shell structure having a first accommodating cavity, a first electronic component is disposed in the first accommodating cavity, and the first shell structure comprises a first bottom plate and a first back plate; the first bottom plate is vertically connected to one side of the first back plate, the first electronic component is disposed on the first bottom plate, and the first electronic component is a metal part.

[0006] The circuit breaker body is slidably connected in the first accommodating cavity, and the circuit breaker body is a second shell structure having a second accommodating cavity. A second electronic component is disposed in the second accommodating cavity. The second shell structure includes a second base plate and a second back plate. The second base plate is vertically connected to one side of the second back plate. The second electronic component is disposed on the second base plate, and the second electronic component is a conductive member.

[0007] A reinforcing rib is provided on one side of the second back plate close to the second bottom plate, and the reinforcing rib is located between the first back plate and the second back plate; the thickness of the reinforcing rib is set along a first direction, and the first direction is the direction from the second bottom plate to the first bottom plate.

[0008] According to the first aspect, a drawer-type circuit breaker includes a drawer seat and a circuit breaker body, wherein the drawer seat is a first housing structure having a first accommodating cavity, wherein a first bottom plate and a first back plate in the first housing structure are both used to protect a first electronic component disposed in the first accommodating cavity, wherein the first electronic component is disposed on the first bottom plate and is a metal component with high electrical conductivity; the circuit breaker body is slidably connected within the first accommodating cavity, and the circuit breaker body is a second housing structure having a second accommodating cavity, wherein a second bottom plate and a second back plate in the second housing structure are both used to protect a second electronic component disposed in the second accommodating cavity, wherein the second electronic component is disposed on the second bottom plate and is a metal component with high electrical conductivity. Since the second housing structure is slidably connected within the first accommodating cavity, the insulation distance between the first electronic component and the second electronic component is limited.

[0009] A reinforcing rib is provided on the side of the second backplane adjacent to the second baseplate, located between the first backplane and the second backplane. The thickness of the reinforcing rib is in the first direction. Since the first direction is the direction from the second baseplate toward the first baseplate, and the first and second electronic components are disposed on the first and second baseplates, respectively, the thickness of the reinforcing rib can be used to increase the creepage distance between the first and second electronic components, thereby preventing the drawer-type circuit breaker from breaking down due to the close proximity of the highly conductive first and second electronic components. This solves the problem of insufficient creepage distance between the circuit breaker body and the drawer seat due to a small gap between the circuit breaker body and the drawer seat, which in turn leads to easy breakdown during high-voltage testing, and successfully implements high-voltage testing.

[0010] In a possible design, one or more reinforcing ribs are provided on the second bottom plate along the first direction.

[0011] According to this embodiment, the second base plate can be provided with one or more reinforcing ribs along the first direction. The more reinforcing ribs are provided on the second base plate along the first direction, the greater the creepage distance between the first electronic component and the second electronic component in the first direction. Those skilled in the art can select the number of reinforcing ribs according to actual needs.

[0012] In a possible design, a reinforcement structure is provided on the reinforcing rib, and the reinforcement structure is provided on the surface of the reinforcing rib.

[0013] According to this embodiment, a reinforcement structure is provided on the reinforcing rib to increase the creepage distance between the first electronic component and the second electronic component in the first direction, so that the drawer-type circuit breaker can withstand a higher test voltage, thereby ensuring the reliability of high-voltage testing.

[0014] In a possible design, the reinforcement structure is a first protruding structure provided on the surface of the reinforcing rib.

[0015] According to this embodiment, when the first raised structure is provided on the surface of the reinforcing rib, the current in the first electronic component needs to pass through the surface of the reinforcing rib and the surface of the first raised structure at the same time, so that the climbing distance of the current in the first electronic component is extended, thereby increasing the creepage distance between the first electronic component and the second electronic component in the first direction.

[0016] In a possible design, the reinforcement structure is a first groove opened on the surface of the reinforcing rib.

[0017] According to this embodiment, when the first groove is provided on the surface of the reinforcing rib, the current in the first electronic component passes through the first groove when passing through the surface of the reinforcing rib, thereby extending the climbing path of the current and increasing the creepage distance between the first electronic component and the second electronic component in the first direction.

[0018] In a possible design, one or more reinforcement structures are provided on the surface of the reinforcing rib.

[0019] According to this embodiment, the more reinforcing structures are provided on the surface of the reinforcing rib, the greater the creepage distance between the first electronic component and the second electronic component in the first direction. Those skilled in the art can select the number of reinforcing ribs according to actual needs.

[0020] In a possible design, the thickness of the reinforcing rib is greater than 2 mm.

[0021] According to this embodiment, the thickness of the reinforcing rib is greater than 2 mm, so as to ensure that the creepage distance between the circuit breaker body and the drawer seat is large enough, thereby ensuring that the drawer-type circuit breaker will not be broken down during high-voltage testing.

[0022] In one possible design, the circuit breaker body includes a body busbar connected to the second back plate; the body busbar includes a first side and a second side opposite to each other, the second side faces the first bottom plate, and a first notch is formed on the second side, so that a first gap exists between the first notch and the first electronic component.

[0023] This embodiment provides a first notch on the second side of the main body busbar to increase the electrical gap between the main body busbar and the first electronic component, thereby increasing the insulation distance between the main body busbar and the first electronic component, so that the drawer-type circuit breaker can withstand a higher test voltage, thereby ensuring the reliability of high-voltage testing.

[0024] In a possible design, a pin is provided on the second side of the main body busbar.

[0025] The embodiment provided herein is suitable for a drawer-type circuit breaker with a small current when one pin is provided on the main busbar.

[0026] In a possible design, two pins are provided on the second side of the main body busbar.

[0027] The embodiment provided herein is suitable for a drawer-type circuit breaker with a large current when a pin is provided on the main busbar. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] FIG1 is a schematic structural diagram of a drawer seat provided in an embodiment of the present application;

[0030] FIG2 is a structural schematic diagram and a partial cross-sectional view of a circuit breaker body provided in an embodiment of the present application;

[0031] FIG3 is a cross-sectional view of a structure of a drawer-type circuit breaker provided in an embodiment of the present application;

[0032] FIG4 is a schematic structural diagram of a second backplane provided in an embodiment of the present application;

[0033] FIG5 is a cross-sectional view along the direction A of FIG4 and a schematic diagram of a first structure of a reinforcing rib provided in an embodiment of the application;

[0034] FIG6 is a schematic diagram of a second structure of a reinforcing rib provided in an embodiment of the present application;

[0035] FIG7 is a schematic diagram of a third structure of a reinforcing rib provided in an embodiment of the present application;

[0036] FIG8 is a schematic diagram of a first structural example of a main busbar provided in an embodiment of the present application;

[0037] FIG9 is a schematic diagram of a second structure of the main busbar provided in an embodiment of the present application.

[0038] Explanation of the accompanying drawings: 100-drawer-type circuit breaker; 1-drawer seat; 11-first electronic component; 12-first base plate; 13-first back plate; 2-circuit breaker body; 21-second electronic component; 22-second base plate; 23-second back plate; 231-reinforcement rib; 232-first protruding structure; 233-first groove; 24-body busbar; 241-first notch; 242-pin; X-first direction. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0041] The terms "comprises", "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0042] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0043] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0044] The directional words appearing in the following description are all directions shown in the drawings and do not limit the specific structure of this application. For example, in the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting this application.

[0045] In addition, the expressions indicating directions such as the X direction, Y direction, and Z direction used to illustrate the operation and construction of the various components of this embodiment are not absolute but relative, and although these indications are appropriate when the various components of this embodiment are in the positions shown in the figures, when these positions are changed, these directions should be interpreted differently to correspond to the changes.

[0046] In addition, the terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more such features.

[0047] In the description of this application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two (including two).

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, "connected" or "connected" in a mechanical structure can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection via a fixing member, such as a screw, bolt, or other fixing member. A physical connection can also be a detachable connection, such as a mutual snap-fit ​​connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. "Connected" or "connected" in a circuit structure can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is interconnected. It can also refer to internal communication between two elements. A signal connection can refer to a signal connection through a circuit or a signal connection through a media medium, such as radio waves. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0049] As shown in Figures 1, 2 and 3, a first aspect of an embodiment of the present application provides a drawer-type circuit breaker 100, comprising: a drawer seat 1 and a circuit breaker body 2; the drawer seat 1 is a first shell structure having a first accommodating cavity, in which a first electronic component 11 is disposed, and the first shell structure includes a first bottom plate 12 and a first back plate 13; the first bottom plate 12 is vertically connected to one side of the first back plate 13, and the first electronic component 11 is disposed on the first bottom plate 12, and the first electronic component 11 is a metal part.

[0050] Specifically, the first housing structure includes a first bottom plate 12, a first back plate 13, a first top plate, a first left side plate, and a first right side plate. The first bottom plate 12 and the first top plate are oppositely disposed surfaces, while the first left side plate and the first right side plate are oppositely disposed surfaces. Opposite the first back plate 13 is the sliding entrance of the circuit breaker body 2. Furthermore, sliding connection structures are typically provided on the first left side plate and the first right side plate. For example, a slide groove is provided on each of the first left side plate and the first right side plate, and a slider is provided on the circuit breaker body 2. The slider on the circuit breaker body 2 cooperates with the slide groove to enable the circuit breaker body 2 to be slidably connected within the drawer 1.

[0051] As can be seen from the above, the drawer seat 1 is equivalent to the drawer slot in a traditional drawer assembly, and is used to place and accommodate the circuit breaker body 2. The circuit breaker body 2 is equivalent to the drawer body in a traditional drawer assembly.

[0052] The first bottom plate 12 , the first back plate 13 , the first top plate, the first left plate and the first right plate constitute a first housing structure having a first accommodating cavity, providing protection for the circuit breaker body 2 and the first electronic component 11 disposed in the first accommodating cavity.

[0053] The first electronic assembly 11 is a plurality of electronic components disposed in the drawer seat 1, such as a transmission shaft assembly and a protective cover assembly. The transmission shaft assembly and the protective cover assembly are both metal parts with strong electrical conductivity. As shown in FIG1 , the transmission shaft assembly and the protective cover assembly are both disposed on the first base plate 12.

[0054] As shown in Figures 1, 2, and 3, the circuit breaker body 2 is slidably connected in the first accommodating cavity, and the circuit breaker body 2 is a second shell structure having a second accommodating cavity. A second electronic component 21 is arranged in the second accommodating cavity. The second shell structure includes a second base plate 22 and a second back plate 23; the second base plate 22 is vertically connected to one side of the second back plate 23, and the second electronic component 21 is arranged on the second base plate 22, and the second electronic component 21 is a conductive member.

[0055] Specifically, the second housing structure includes a second bottom plate 22, a second back plate 23, a second front plate, a second top plate, a second left side plate, and a second right side plate. The second bottom plate 22 and the second top plate are oppositely disposed surfaces, the second left side plate and the second right side plate are oppositely disposed surfaces, and the second front plate and the second back plate 23 are oppositely disposed surfaces, so that the second accommodating chamber becomes a sealed chamber.

[0056] The second bottom plate 22 , the second back plate 23 , the second front plate, the second top plate, the second left plate and the second right plate constitute a second housing structure having a second accommodating cavity, providing protection for the second electronic component 21 disposed in the second accommodating cavity.

[0057] The second electronic assembly 21 comprises numerous electronic components, such as movable and stationary contacts, disposed within the circuit breaker body 2. These movable and stationary contacts are both metal and highly conductive. When the circuit breaker body 2 is powered on, current flows through them. Both movable and stationary contacts are mounted near the second base plate 22.

[0058] When the circuit breaker body 2 is slidably connected in the drawer seat 1, the second bottom plate 22 is close to the first bottom plate 12, the second back plate 23 is close to the first back plate 13, the second top plate is close to the first top plate, the second left plate is close to the first left plate, and the second right plate is close to the first right plate. Since the first electronic component 11 arranged on the first bottom plate 12 and the second electronic component 21 arranged on the second bottom plate 22 are both metal parts, and current flows in the drawer circuit breaker in the working state, it is necessary to ensure a certain insulation distance between the first electronic component 11 and the second electronic component 21 to prevent current breakdown.

[0059] As shown in Figures 4 and 5, a reinforcing rib 231 is provided on one side of the second back plate 23 close to the second bottom plate 22, and the reinforcing rib 231 is located between the first back plate 13 and the second back plate 23; the thickness of the reinforcing rib 231 is set along the first direction X, and the first direction X is the direction from the second bottom plate 22 to the first bottom plate 12.

[0060] Specifically, the reinforcing rib 231 is a block-shaped structure with a length, thickness, and height. As shown in Figure 1, the thickness of the reinforcing rib 231 is in the first direction X. Since the first direction X is the direction from the second base plate 22 toward the first base plate 12, and the first electronic component 11 and the second electronic component 21 are respectively arranged on the first base plate 12 and the second base plate 22, the thickness of the reinforcing rib 231 can be used to increase the creepage distance between the first electronic component 11 and the second electronic component 21 in the first direction X.

[0061] Creepage distance is the shortest path between two conductive parts, measured along the surface of the insulation. Therefore, adding insulation between two conductive parts increases creepage distance; the greater the creepage distance, the greater the insulation distance between the two conductive parts.

[0062] A first aspect of an embodiment of the present application provides a drawer-type circuit breaker 100 including a drawer base 1 and a circuit breaker body 2. The drawer base 1 is a first housing structure having a first accommodating cavity. A first bottom plate 12 and a first back plate 13 in the first housing structure are both used to protect a first electronic component 11 disposed in the first accommodating cavity. The first electronic component 11 is disposed on the first bottom plate 12 and is a metal component with strong electrical conductivity. The circuit breaker body 2 is slidably connected within the first accommodating cavity. The circuit breaker body 2 is a second housing structure having a second accommodating cavity. A second bottom plate 22 and a second back plate 23 in the second housing structure are both used to protect a second electronic component 21 disposed in the second accommodating cavity. The second electronic component 21 is disposed on the second bottom plate 22 and is a metal component with strong electrical conductivity. Because the second housing structure is slidably connected within the first accommodating cavity, the insulation distance between the first electronic component 11 and the second electronic component 21 is limited.

[0063] A reinforcing rib 231 is provided on the side of the second backplate 23 near the second baseplate 22, located between the first backplate 13 and the second backplate 23. The thickness of the reinforcing rib 231 is in the first direction X. Since the first direction X is the direction from the second baseplate 22 toward the first baseplate 12, and the first electronic component 11 and the second electronic component 21 are respectively arranged on the first baseplate 12 and the second baseplate 22, the thickness of the reinforcing rib 231 can be used to increase the creepage distance between the first electronic component 11 and the second electronic component 21, thereby preventing the first electronic component 11 and the second electronic component 21, which have strong conductivity, from being too close to each other, causing the drawer-type circuit breaker 100 to break down. This solves the problem of insufficient creepage distance between the circuit breaker body 2 and the drawer base 1 due to a small gap between the circuit breaker body 2 and the drawer base 1, which in turn easily causes breakdown during high-voltage testing, and successfully achieves high-voltage testing.

[0064] In some embodiments, one or more reinforcing ribs 231 are provided on the second bottom plate 22 along the first direction X.

[0065] Specifically, when the second base plate 22 is provided with multiple reinforcing ribs 231 along the first direction X, the creepage distance between the second electronic component 21 and the first electronic component 11 in the first direction X is the sum of the distances that the current in the first electronic component 11 travels along the surface area of ​​the multiple reinforcing ribs 231. Therefore, compared to providing a single reinforcing rib 231 on the second base plate 22, providing multiple reinforcing ribs 231 along the first direction X can increase the creepage distance between the first electronic component 11 and the second electronic component 21 in the first direction X.

[0066] According to this embodiment, the second base plate 22 can be provided with one or more reinforcing ribs 231 along the first direction X. The more reinforcing ribs 231 the second base plate 22 is provided with along the first direction X, the greater the creepage distance between the first electronic component 11 and the second electronic component 21 in the first direction X. Those skilled in the art can select the number of reinforcing ribs 231 according to actual needs.

[0067] In some embodiments, a reinforcement structure is provided on the reinforcing rib 231 , and the reinforcement structure is provided on the surface of the reinforcing rib 231 .

[0068] Specifically, a reinforcement structure is provided on the reinforcing rib 231. The presence of the reinforcement structure increases the surface area of ​​the reinforcing rib 231, thereby extending the distance that the current in the first electronic component 11 climbs along the surface area of ​​the reinforcing rib 231, thereby increasing the creepage distance between the first electronic component 11 and the second electronic component 21 in the first direction X.

[0069] According to this embodiment, a reinforcement structure is provided on the reinforcing rib 231 to increase the creepage distance between the first electronic component 11 and the second electronic component 21 in the first direction X, so that the drawer-type circuit breaker 100 can withstand a higher test voltage, thereby ensuring the reliability of high-voltage testing.

[0070] In some embodiments, as shown in FIG. 6 , the reinforcement structure is a first protruding structure 232 , and the first protruding structure 232 is disposed on the surface of the reinforcing rib 231 .

[0071] According to this embodiment, when the first protruding structure 232 is arranged on the surface of the reinforcing rib 231, the current in the first electronic component 11 needs to pass through the surface of the reinforcing rib 231 and the surface of the first protruding structure 232 at the same time, so that the climbing distance of the current in the first electronic component 11 is extended, thereby increasing the creepage distance between the first electronic component 11 and the second electronic component 21 in the first direction X.

[0072] In some embodiments, as shown in FIG. 7 , the reinforcement structure is a first groove 233 , and the first groove 233 is disposed on the surface of the reinforcing rib 231 .

[0073] According to this embodiment, when the first groove 233 is provided on the surface of the reinforcing rib 231, the current in the first electronic component 11 passes through the first groove 233 when passing through the surface of the reinforcing rib 231, thereby extending the climbing path of the current and increasing the creepage distance between the first electronic component 11 and the second electronic component 21 in the first direction X.

[0074] In some embodiments, one or more reinforcing structures are provided on the surface of the reinforcing rib 231 .

[0075] According to this embodiment, the more reinforcing structures are provided on the surface of the reinforcing rib 231, the greater the creepage distance between the first electronic component 11 and the second electronic component 21 in the first direction X. Those skilled in the art can select the number of reinforcing ribs 231 according to actual needs.

[0076] In some embodiments, the thickness of the reinforcement rib 231 is greater than 2 mm.

[0077] Specifically, based on multiple test data, it is concluded that when the thickness of the reinforcing rib 231 is less than 2 mm, the increased creepage distance is insufficient to protect the drawer-type circuit breaker 100 from breakdown.

[0078] According to this embodiment, the thickness of the reinforcing rib 231 is greater than 2 mm, so as to ensure that the creepage distance between the circuit breaker body 2 and the drawer seat 1 is large enough, thereby ensuring that the drawer-type circuit breaker 100 will not be broken down during high-voltage testing.

[0079] In some embodiments, as shown in Figures 1, 2, 8 and 9, the circuit breaker body 2 includes a body busbar 24 connected to the second back plate 23; the body busbar 24 includes a first side and a second side opposite to each other, the second side facing the first base plate 12, and a first notch 241 is formed on the second side, so that a first gap exists between the first notch 241 and the first electronic component 11.

[0080] Specifically, when the drawer-type circuit breaker 100 is assembled, the third side of the main body busbar 24 is in close proximity to the first electronic assembly 11 disposed on the first base plate 12. As part of the second electronic assembly 21, the main body busbar 24 is conductive. To ensure a certain insulation distance between the first electronic assembly 11 and the second electronic assembly 21, a first gap is required between the second side of the main body busbar 24 and the first electronic assembly 11. The first notch 241 on the second side of the main body busbar 24 increases the electrical clearance between the main body busbar 24 and the first electronic assembly 11.

[0081] Electrical clearance is the shortest spatial distance measured between two conductive components. The distance from the first notch 241 to the first electronic component 11 is greater than the distance from the bottom of the second side to the first electronic component 11, thereby increasing the electrical clearance between the main busbar 24 and the first electronic component 11.

[0082] According to this embodiment, a first notch 241 is provided on the second side of the main body busbar 24 to increase the electrical clearance between the main body busbar 24 and the first electronic component 11, thereby increasing the insulation distance between the main body busbar 24 and the first electronic component 11. This allows the drawer-type circuit breaker 100 to withstand a higher test voltage, thereby ensuring the reliability of high-voltage testing.

[0083] In some embodiments, as shown in FIG. 8 , a pin 242 is provided on the second side of the main busbar 24 .

[0084] Specifically, when a pin 242 is provided on the third side of the main busbar 24 , the first notch 241 is an L-shaped notch.

[0085] According to this embodiment, when a pin 242 is provided on the main body busbar 24, the drawer-type circuit breaker 100 is suitable for small current.

[0086] In some embodiments, as shown in FIG. 9 , two pins 242 are provided on the second side of the main busbar 24 .

[0087] Specifically, when two pins 242 are provided on the third side of the main busbar 24 , the first notch 241 is a U-shaped notch.

[0088] According to this embodiment, when a pin 242 is provided on the main busbar 24, the drawer-type circuit breaker 100 is suitable for large current.

[0089] Furthermore, those skilled in the art can select different types of main busbars 24 according to specific needs.

[0090] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0091] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A drawer type circuit breaker, characterized in that: Including drawer base and circuit breaker body; The drawer seat is a first housing structure having a first accommodating cavity, wherein a first electronic component is arranged in the first accommodating cavity, and the first housing structure includes a first bottom plate and a first back plate; The first bottom plate is vertically connected to one side of the first back plate, the first electronic component is arranged on the first bottom plate, and the first electronic component is a metal component; The circuit breaker body is slidably connected in the first accommodating cavity, and the circuit breaker body is a second housing structure having a second accommodating cavity, a second electronic component is arranged in the second accommodating cavity, and the second housing structure includes a second bottom plate and a second back plate; The second bottom plate is vertically connected to one side of the second back plate, the second electronic component is arranged on the second bottom plate, and the second electronic component is a conductive member; A reinforcing rib is provided on a side of the second back plate close to the second bottom plate, and the reinforcing rib is located between the first back plate and the second back plate; The thickness of the reinforcing rib is set along a first direction, and the first direction is a direction from the second bottom plate to the first bottom plate.

2. The drawer type circuit breaker according to claim 1, characterized in that: One or more reinforcing ribs are arranged on the second bottom plate along the first direction.

3. The drawer type circuit breaker according to claim 2, characterized in that: The reinforcing rib is provided with a reinforcing structure, and the reinforcing structure is arranged on the surface of the reinforcing rib.

4. The drawer type circuit breaker according to claim 3, characterized in that: The reinforcement structure is a first protruding structure arranged on the surface of the reinforcing rib.

5. The drawer type circuit breaker according to claim 3, characterized in that: The reinforcement structure is a first groove opened on the surface of the reinforcing rib.

6. The drawer type circuit breaker according to claim 4 or 5, characterized in that: One or more reinforcing structures are provided on the surface of the reinforcing rib.

7. The drawer type circuit breaker according to claim 6, characterized in that: The thickness of the reinforcing rib is greater than 2 mm.

8. The drawer-type circuit breaker according to claim 1, characterized in that: The circuit breaker body includes a body busbar connected to the second back plate; The main busbar includes a first side and a second side opposite to each other, the second side faces the first bottom plate, and a first notch is formed on the second side, so that a first gap exists between the first notch and the first electronic component.

9. The drawer-type circuit breaker according to claim 8, characterized in that: A pin is provided on the second side of the main body busbar.

10. The drawer-type circuit breaker according to claim 8, characterized in that: Two pins are provided on the second side of the main body busbar.

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