Drawer type circuit breaker

Abstract

The utility model provides a drawer type circuit breaker which comprises a drawer base and a circuit breaker body, the drawer base is of a first shell structure with a first containing cavity, a first electronic assembly is arranged on a first bottom plate, and the first electronic assembly is a metal piece and has high conductivity; the circuit breaker body is in sliding connection in the first containing cavity, the circuit breaker body is of a second shell structure with a second containing cavity, the second electronic assembly is arranged on the second bottom plate, and the second electronic assembly is a metal piece and has high conductivity. The second shell structure is slidably connected in the first accommodating cavity, so that the insulation distance between the first electronic component and the second electronic component is limited. A reinforcing rib located between the first back plate and the second back plate is arranged on the side, close to the second bottom plate, of the second back plate and used for increasing the creepage distance between the first electronic assembly and the second electronic assembly, and the breakdown risk of the drawer type circuit breaker due to the fact that the distance between the first electronic assembly and the second electronic assembly is too short is prevented.

Description

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 type circuit breaker is a circuit breaker with a modular design, used to protect and control circuits. A drawer type circuit breaker generally includes a circuit breaker body and a drawer base. The circuit breaker body is slidably connected in the drawer base, so that the circuit breaker body can be withdrawn from the drawer base alone for inspection, replacement or maintenance without shutting down the entire circuit.

[0003] The drawer-type circuit breakers in the related technology 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 seat is small, resulting in insufficient creepage distance between the circuit breaker body and the drawer seat, which in turn causes the problem of easy breakdown during high-voltage testing, leading to failure of the high-voltage test. Utility Model Content

[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, so that the creepage distance between the circuit breaker body and the drawer seat is insufficient, and then the high-voltage test is easy to break through, and the high-voltage test is successfully realized.

[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 arranged 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 arranged 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 arranged in the second accommodating cavity, and the second shell 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.

[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 the first electronic component is a metal component with strong conductivity; 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, 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 the second electronic component is a metal component with strong conductivity. Since the second housing structure is slidably connected in the first accommodating cavity, the insulation distance between the first electronic component and the second electronic component is limited.

[0009] A reinforcing rib located between the first back plate and the second back plate is provided on one side of the second back plate close to the second bottom plate, and the thickness of the reinforcing rib is in the first direction. Since the first direction is the direction of the second bottom plate toward the first bottom plate, and the first electronic component and the second electronic component are respectively arranged on the first bottom plate and the second bottom plate; therefore, the thickness of the reinforcing rib can be used to increase the creepage distance between the first electronic component and the second electronic component, and prevent the first electronic component with strong conductivity and the second electronic component from being too close to each other, causing the drawer-type circuit breaker to have a breakdown risk. The problem of insufficient creepage distance between the circuit breaker body and the drawer seat due to the small gap between the circuit breaker body and the drawer seat, which in turn causes easy breakdown during high-voltage testing, is solved, and high-voltage testing is successfully achieved.

[0010] In a possible design, one or more reinforcing ribs are arranged 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. Technical personnel in this field 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 the 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 the high-voltage test.

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

[0015] According to the embodiment, when the first protrusion structure is arranged 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 protrusion 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 arranged 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, so that the climbing path of the current is extended, thereby 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 reinforcing structures are provided on the surface of the reinforcing rib.

[0019] According to the embodiment, the more reinforcing structures are arranged 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 the 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 the high-voltage test.

[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 begins on the second side, so that a first gap exists between the first notch and the first electronic component.

[0023] According to this embodiment, a first notch is provided 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 a pin is provided on the main body 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 creative work.

[0029] Figure 1 A schematic diagram of the structure of a drawer seat provided in an embodiment of the present application;

[0030] Figure 2 A structural schematic diagram and a partial cross-sectional view of a circuit breaker body provided in an embodiment of the present application;

[0031] Figure 3 A structural cross-sectional view of a drawer-type circuit breaker provided in an embodiment of the present application;

[0032] Figure 4 A schematic diagram of the structure of a second backplane provided in an embodiment of the present application;

[0033] Figure 5 for Figure 4 A cross-sectional view along direction A and a schematic diagram of the first structure of the reinforcing rib provided in the embodiment of the application

[0034] Figure 6 A schematic diagram of a second structure of a reinforcing rib provided in an embodiment of the present application;

[0035] Figure 7 A third structural schematic diagram of the reinforcing rib provided in the embodiment of the present application;

[0036] Figure 8 A schematic diagram of the first structure of the main busbar provided in the embodiment of the present application;

[0037] Fig. 9 A second structural schematic diagram of the main busbar provided in an embodiment of the present application.

[0038] Description of reference numerals:

[0039] 100-Drawer type circuit breaker;

[0040] 1-drawer seat; 11-first electronic component; 12-first bottom plate; 13-first back plate;

[0041] 2-circuit breaker body; 21-second electronic component; 22-second bottom plate; 23-second back plate; 231-reinforcement rib; 232-first protruding structure; 233-first groove;

[0042] 24-main body busbar; 241-first notch; 242-pin;

[0043] X - first direction. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0046] The terms "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.

[0047] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0048] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0049] The directional words appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the present application. For example, in the description of the present application, the directions or positional relationships indicated by 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. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application.

[0050] In addition, the expressions of the indicated directions, such as the X direction, the Y direction, and the Z direction, used to illustrate the operation and construction of the components of the present embodiment are not absolute but relative, and although these indications are appropriate when the components of the battery pack are in the positions shown in the figures, when these positions change, these directions should be interpreted differently to correspond to the changes.

[0051] In addition, the terms "first", "second", etc. in the specification 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 of the features.

[0052] In the description of the present application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two groups (including two).

[0053] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap connection or snap connection; the physical connection may also be an integral connection, such as welding, bonding or integral molding to form a connection for connection. The "connection" or "connection" of a circuit structure may refer to an electrical connection or a signal connection in addition to a physical connection. For example, it may be a direct connection, that is, a physical connection, or it may be an indirect connection through at least one intermediate element, as long as the circuit is connected, or it may be the internal connection of two elements; the signal connection may refer to a signal connection through a media medium, such as a radio wave, in addition to a signal connection through a circuit. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] like Figure 1 , Figure 2 and Figure 3 As shown, the 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, a first electronic component 11 is arranged in the first accommodating cavity, and the first shell structure comprises 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, the first electronic component 11 is arranged on the first bottom plate 12, and the first electronic component 11 is a metal part.

[0055] 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 two oppositely disposed surfaces, the first left side plate and the first right side plate are two oppositely disposed surfaces, and the sliding entrance of the circuit breaker body 2 is disposed opposite to the first back plate 13. In addition, a sliding connection structure is usually provided on the first left side plate and the first right side plate. For example, a slide groove is provided on the first left side plate and the first right side plate respectively, a slider is provided on the circuit breaker body 2, and the slider on the circuit breaker body 2 cooperates with the slide groove so that the circuit breaker body 2 is slidably connected in the drawer seat 1.

[0056] As can be seen from the above, the drawer seat 1 is equivalent to the drawer slot in the 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 the traditional drawer assembly.

[0057] 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.

[0058] The first electronic assembly 11 is a plurality of electronic components arranged in the drawer seat 1, such as a transmission shaft assembly and a protective cover assembly, etc. The transmission shaft assembly and the protective cover assembly are both metal parts with strong conductivity. Figure 1 As shown, the transmission shaft assembly and the protective cover assembly are both arranged on the first base plate 12 .

[0059] like Figure 1 Figure 2 ,and Figure 3 As shown, 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, and the second shell structure includes a second bottom plate 22 and a second back plate 23; the second bottom plate 22 is vertically connected to one side of the second back plate 23, the second electronic component 21 is arranged on the second bottom plate 22, and the second electronic component 21 is a conductive member.

[0060] 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 plate and a second right plate. The second bottom plate 22 and the second top plate are two oppositely disposed surfaces, the second left plate and the second right plate are two oppositely disposed surfaces, and the second front plate and the second back plate 23 are two oppositely disposed surfaces, so that the second accommodating cavity becomes a sealed cavity.

[0061] 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.

[0062] The second electronic assembly 21 is a plurality of electronic components arranged in the circuit breaker body 2, such as a moving contact, a stationary contact, etc. The moving contact and the stationary contact are both metal parts with strong conductivity. When the circuit breaker body 2 is powered on, current exists in the moving contact and the stationary contact, and the installation positions of the moving contact and the stationary contact are both close to the second base plate 22.

[0063] 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 that there is a certain insulation distance between the first electronic component 11 and the second electronic component 21 to prevent current breakdown.

[0064] like Figure 4 and Figure 5 As shown, 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 arranged along the first direction X, and the first direction X is the direction from the second bottom plate 22 toward the first bottom plate 12 .

[0065] Specifically, the reinforcing rib 231 is a block structure having a length, a thickness and a height. Figure 1 As shown, 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 to 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.

[0066] Creepage distance refers to the shortest path between two conductive parts measured along the insulating surface. Therefore, adding an insulating structure between two conductive parts can increase the creepage distance; the larger the creepage distance, the greater the insulation distance between the two conductive parts.

[0067] The drawer-type circuit breaker 100 provided in the first aspect of the embodiment of the present application includes a drawer seat 1 and a circuit breaker body 2, wherein the drawer seat 1 is a first housing structure having a first accommodating cavity, wherein the first bottom plate 12 and the first back plate 13 in the first housing structure are both used to protect the first electronic component 11 disposed in the first accommodating cavity, wherein the first electronic component 11 is disposed on the first bottom plate 12, and the first electronic component 11 is a metal component with strong conductivity; the circuit breaker body 2 is slidably connected in the first accommodating cavity, and the circuit breaker body 2 is a second housing structure having a second accommodating cavity, wherein the second bottom plate 22 and the second back plate 23 in the second housing structure are both used to protect the second electronic component 21 disposed in the second accommodating cavity, wherein the second electronic component 21 is disposed on the second bottom plate 22, and the second electronic component 21 is a metal component with strong conductivity. Since the second housing structure is slidably connected in the first accommodating cavity, the insulation distance between the first electronic component 11 and the second electronic component 21 is limited.

[0068] A reinforcing rib 231 located between the first back plate 13 and the second back plate 23 is provided on one side of the second back plate 23 close to the second bottom plate 22, and the thickness of the reinforcing rib 231 is in the first direction X. Since the first direction X is the direction from the second bottom plate 22 to the first bottom plate 12, and the first electronic component 11 and the second electronic component 21 are respectively arranged on the first bottom plate 12 and the second bottom plate 22; therefore, 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, so as to prevent the first electronic component 11 and the second electronic component 21 with strong conductivity from being too close to each other, causing the drawer-type circuit breaker 100 to have a breakdown risk. The problem that the gap between the circuit breaker body 2 and the drawer seat 1 is small, so that the creepage distance between the circuit breaker body 2 and the drawer seat 1 is insufficient, and the high-voltage test is easy to break down is solved, and the high-voltage test is successfully realized.

[0069] In some embodiments, one or more reinforcing ribs 231 are disposed along the first direction X on the second bottom plate 22 .

[0070] Specifically, when the second base plate 22 is provided with a plurality of 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 climbs along the surface areas of the plurality of reinforcing ribs 231. Therefore, compared with providing one reinforcing rib 231 on the second base plate 22, providing a plurality of 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.

[0071] According to this embodiment, the second base plate 22 may 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 may select the number of reinforcing ribs 231 according to actual needs.

[0072] In some embodiments, a reinforcement structure is disposed on the reinforcing rib 231 , and the reinforcement structure is disposed on the surface of the reinforcing rib 231 .

[0073] 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.

[0074] According to the 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 the high-voltage test.

[0075] In some embodiments, Figure 6 As shown, the reinforcement structure is a first protruding structure 232 , and the first protruding structure 232 is arranged on the surface of the reinforcing rib 231 .

[0076] According to the embodiment, when the first protrusion 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 protrusion 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.

[0077] In some embodiments, Figure 7 As shown, the reinforcement structure is a first groove 233 , and the first groove 233 is arranged on the surface of the reinforcing rib 231 .

[0078] According to the embodiment, when the first groove 233 is arranged 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, so that the climbing path of the current is extended, thereby increasing the creepage distance between the first electronic component 11 and the second electronic component 21 in the first direction X.

[0079] In some embodiments, one or more reinforcing structures are disposed on the surface of the reinforcing rib 231 .

[0080] According to this embodiment, the more reinforcing structures are arranged 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.

[0081] In some embodiments, the thickness of the reinforcing rib 231 is greater than 2 mm.

[0082] Specifically, it is concluded based on multiple test data that when the thickness of the reinforcing rib 231 is less than 2 mm, the increased creepage distance is not sufficient to protect the drawer-type circuit breaker 100 from breakdown.

[0083] According to the 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 the high-voltage test.

[0084] In some embodiments, Figure 1 , Figure 2 , Figure 8 and Fig. 9 As shown, 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 faces the first bottom plate 12, and a first notch 241 begins on the second side, so that there is a first gap between the first notch 241 and the first electronic component 11.

[0085] Specifically, when the drawer-type circuit breaker 100 is assembled, the third side of the main body busbar 24 is close to the first electronic component 11 disposed on the first bottom plate 12. As a part of the second electronic component 21, the main body busbar 24 is conductive. In order to ensure a certain insulation distance between the first electronic component 11 and the second electronic component 21, a first gap needs to exist between the second side of the main body busbar 24 and the first electronic component 11. Since the second side of the main body busbar 24 begins to have a first notch 241, the electrical gap between the main body busbar 24 and the first electronic component 11 is increased.

[0086] The electrical gap is the shortest space distance measured between two conductive parts. The distance from the first notch 241 to the first electronic component 11 is greater than the distance from the second side bottom to the first electronic component 11, thereby increasing the electrical gap between the main busbar 24 and the first electronic component 11.

[0087] According to this embodiment, a first notch 241 is provided on the second side of the main body busbar 24 to increase the electrical gap 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, so that the drawer-type circuit breaker 100 can withstand a higher test voltage, thereby ensuring the reliability of high-voltage testing.

[0088] In some embodiments, Figure 8 As shown, a pin 242 is disposed on the second side of the main busbar 24 .

[0089] Specifically, when a pin 242 is disposed on the third side of the main busbar 24 , the first notch 241 is an L-shaped notch.

[0090] The embodiment provided herein, when a pin 242 is provided on the main body busbar 24, is suitable for a drawer-type circuit breaker 100 with a small current.

[0091] In some embodiments, Fig. 9 As shown, two pins 242 are disposed on the second side of the main busbar 24 .

[0092] Specifically, when two pins 242 are disposed on the third side of the main busbar 24 , the first notch 241 is a U-shaped notch.

[0093] The embodiment provided herein, when a pin 242 is provided on the main body busbar 24, is suitable for a drawer-type circuit breaker 100 with a large current.

[0094] Furthermore, those skilled in the art may select different types of main busbars 24 according to specific needs.

[0095] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0096] As described above, 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: It includes a drawer seat and a circuit breaker body; The drawer seat is a first housing structure having a first accommodating cavity, 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 part; 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 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 arranged along a first direction, and the first direction is a direction from the second bottom plate toward 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 arranged 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 body busbar includes a first side and a second side opposite to each other, wherein the second side faces the first bottom plate, and a first notch begins to be 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 arranged 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 arranged on the second side of the main body busbar.

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