Residual-current circuit breaker
By setting up a partition structure in the leakage circuit breaker, the contact chamber space is divided into independent areas, which solves the problem of conductive particles short circuit, improves the stability and safety of the circuit breaker, and prevents interphase breakdown.
Patent Information
- Application Number
- CN202422232528.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-12
AI Technical Summary
When the leakage circuit breaker is inverted into the line, the conductive particles generated when the dynamic and static contacts are separated easily enter the adjacent contact chamber and short-circuit with the conductive components, resulting in phase breakdown, affecting the normal use of the circuit breaker.
A partition structure is provided in the leakage circuit breaker to separate the second contact chamber space into a first and a second space, the tripper assembly is located in the first space, and the conductive assembly is located in the second space, and the conductive particles are blocked from contact with the conductive assembly through the partition structure to avoid short circuits.
It effectively avoids short circuit problems caused by conductive particles, improves the stability and safety of the circuit breaker, prevents interphase breakdown, and enhances the reliability of the circuit.
Smart Images
Figure CN223155937U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of electrical equipment, and particularly to a leakage circuit breaker. Background Art
[0002] A leakage circuit breaker has a leakage protection function and is usually connected to a power source and a load to form a loop, thereby playing a role in protecting the load.
[0003] A leakage circuit breaker (hereinafter referred to as a circuit breaker) generally has a power terminal and a load terminal. The power terminal is used to connect to the power source, and the load terminal is used to connect to the load. The main circuit contact assembly of the circuit breaker is connected between the power terminal and the load terminal. Of course, this refers to the electrical connection relationship in the circuit. To achieve the leakage protection function, a leakage protection circuit is often included. There are a leakage identification circuit and a release in the leakage protection circuit. The leakage protection circuit often takes power from the load terminal of the leakage circuit breaker. That is to say, if the leakage circuit breaker is normally wired (that is, the power terminal is connected to the power source and the load terminal is connected to the load), when the leakage circuit breaker trips, since the main circuit contact assembly is disconnected (the electrical connection with the power terminal is in a disconnected state), the release will also lose power. However, in some special cases, it is often necessary to reverse the wiring of the circuit breaker. Here, reversing the wiring means connecting the power terminal that should theoretically be connected to the power source to the load in the actual circuit, and connecting the load terminal that should theoretically be connected to the load to the power source in the actual circuit. The consequence of such a connection is that after the leakage circuit breaker identifies a leakage, it could originally rely on the main circuit conductor to cut off the power supply to make the current on the release loop disappear, but now it cannot be achieved because the current directly flows from the load terminal to the release. Therefore, in the case of a reversed wiring disconnection, the release will be energized.
[0004] It can be seen that the circuit breaker includes a housing assembly, and a contact mechanism is installed in the contact chamber of the housing assembly. When the moving contact and the static contact in the contact mechanism are separated, conductive particles such as carbon powder and metal particles will be generated. An opening slot for the release to pass through is provided on the partition between two adjacent contact chambers for wiring, and in order to ensure the movement of the release, there needs to be enough space between the opening slot and the release. Therefore, when the moving contact and the static contact in one of the contact chambers are separated, a large number of conductive particles generated will enter another contact chamber along this space and contact the conductive components therein. If the release is in an energized state, the conductive particles will cause a short circuit between the release and the conductive components, resulting in phase-to-phase breakdown and affecting the normal use of the circuit breaker. Summary of the Utility Model
[0005] This application provides a leakage circuit breaker, which solves the problem of phase-to-phase breakdown when the moving contact and the static contact in the contact mechanism are separated during reversed wiring.
[0006] The present application provides a leakage circuit breaker, including: an adjacent first contact chamber and second contact chamber, both of which have conductive components; a first chamber partition for separating the first contact chamber and the second contact chamber; a first through hole located on the first chamber partition to enable the trip unit assembly to pass from the first contact chamber through the first through hole into the second contact chamber; a partition structure fixed on the first chamber partition and located on one side of the second contact chamber, separating the space of the second contact chamber into a first space and a second space, the trip unit assembly being located in the first space, and the conductive component in the second contact chamber being located in the second space.
[0007] Through the above-provided solution, since a partition structure is provided in the second contact chamber, and the partition structure separates the space of the second contact chamber into a first space and a second space, such that the trip unit assembly is located in the first space and the conductive component in the second contact chamber is located in the second space. When conductive particles generated due to the separation of the moving and static contacts in the first contact chamber move to the first through hole, due to the arrangement of the partition structure, even if the conductive particles pass through the first through hole, they will never come into contact with the conductive component in the second contact chamber. Therefore, the problem of short circuit between the trip unit and the conductive component caused by conductive particles can be effectively avoided. Additionally, since the conductive component in the second contact chamber is always in the second space, the generated conductive particles cannot cause a short circuit between the conductive component in the second contact chamber and the conductive component in the first contact chamber, thereby avoiding the problem of phase-to-phase breakdown.
[0008] In a possible design, the partition structure includes a transverse plate assembly and a longitudinal plate assembly. The transverse plate assembly is perpendicular to the first chamber partition, and the longitudinal plate assembly is laid flat on the side of the first chamber partition located in the second contact chamber.
[0009] Through the above-provided solution, the transverse plate assembly is perpendicular to the first chamber partition, dividing the second contact chamber into two spaces, such that the trip unit passing from the first contact chamber into the second contact chamber will not form a short circuit with the conductive component in the second contact chamber due to conductive particles. Moreover, the arrangement of the longitudinal plate assembly causes some conductive particles to fall off or change their movement trajectories when touching it, further increasing the path for the conductive particles to move from the first contact chamber to the second space and increasing the difficulty for the conductive particles to reach the conductive component in the second contact chamber. Therefore, the adhesion of conductive particles to the conductive component in the second contact chamber can be effectively reduced, thereby reducing the possibility of short circuit caused by the contact of conductive particles with different conductivities.
[0010] In a possible design, the transverse plate assembly is formed by splicing a plurality of sub-transverse plates, and at least two sub-transverse plates are not on the same horizontal plane.
[0011] Through the above-provided solution, first, since the heights of the various conductive components in the contact chamber are different, and some of the conductive components need to rotate flexibly, sufficient space needs to be reserved. Therefore, the sub-cross plates not being on the same horizontal plane can better cooperate with the placement of the various conductive components in the second contact chamber. Second, the splicing of multiple sub-cross plates extends the movement path of the conductive particles, thereby further reducing the possibility of short circuits caused by the contact of conductive particles with different conductivities. Moreover, the setting that the cross plate assembly is composed of multiple sub-cross plates enables the cross plate assembly to change according to the positions and structures of the components in the contact chamber, making the cross plate assembly more adaptable and flexible.
[0012] In a possible design, at least one second through hole is further provided on the first chamber partition, and the second through hole is used for the linkage insulating member of the leakage circuit breaker to pass through.
[0013] Through the above-provided solution, since there will be a circuit connection between the first contact chamber and the second contact chamber in the circuit breaker, setting the second through hole facilitates the connection of the conductive components in the first contact chamber and the conductive components in the second contact chamber, or facilitates the components in the first contact chamber to pass through the second through hole into the second contact chamber.
[0014] In a possible design, the longitudinal plate assembly is composed of multiple sub-longitudinal plates spliced together. The sub-longitudinal plates are arranged to fit the surface of the first chamber partition, and the sub-longitudinal plates are provided with first avoidance grooves according to the first through holes and the second through holes on the first chamber partition.
[0015] Through the above-provided solution, the sub-longitudinal plates are provided with first avoidance grooves according to the first through holes and the second through holes on the first chamber partition, which can ensure the smooth connection of the conductive components in the first contact chamber and the conductive components in the second contact chamber, or facilitate the components in the first contact chamber to pass smoothly through the second through hole into the second contact chamber. Moreover, the splicing of multiple sub-longitudinal plates extends the movement path of the conductive particles, thereby further reducing the possibility of short circuits caused by the contact of conductive particles with different conductivities.
[0016] In a possible design, the first contact chamber and the second contact chamber are arranged side by side in the first direction. On one side of the second contact chamber is the first chamber partition. Along the first direction, on the opposite side of the second contact chamber relative to the first chamber partition is the second chamber partition. One side of the cross plate assembly in the first direction is in contact with the longitudinal plate assembly, and the other side of the cross plate assembly in the first direction is in contact with the second chamber partition.
[0017] With the above-provided solution, the first chamber partition is disposed within the second contact chamber, pressing against the first chamber partition and the second chamber partition on the left and right sides respectively, such that the second contact chamber is divided into an upper first space and a lower second space. In this way, the conductive particles in the first space are blocked from contacting the conductive components or conductive particles in the second space, thereby preventing the conductive components in the first contact chamber and the conductive components in the second contact chamber from being short-circuited.
[0018] In a possible design, a convex structure is provided on one side of the second chamber partition located in the second contact chamber. The cross-plate assembly is provided with a second avoidance groove on the side in contact with the second chamber partition. The second avoidance groove cooperates with the convex structure, such that the end face of the cross-plate assembly abuts against the second chamber partition.
[0019] With the above-provided solution, a convex structure is provided on one side of the second chamber partition located in the second contact chamber to cooperate with the wiring or space arrangement of other chambers in the circuit breaker. The second avoidance groove cooperates with the convex structure, such that the end face of the cross-plate assembly is in close contact with the second chamber partition, reducing the gap between the cross-plate assembly and the second chamber partition, enabling the cross-plate assembly to be more firmly fixed on the second chamber partition, preventing the conductive particles in the first space from contacting the conductive components in the second space due to the detachment of the cross-plate assembly, and thus ensuring the stability of the circuit breaker.
[0020] In a possible design, the surfaces of the cross-plate assembly and the longitudinal-plate assembly are provided with concave-convex structures, which are used to increase the surface areas of the cross-plate assembly and the longitudinal-plate assembly.
[0021] With the above-provided solution, the concave-convex structures increase the surface areas of the cross-plate assembly and the longitudinal-plate assembly, thereby increasing the paths for the conductive particles to move from the first contact chamber to the second space on the cross-plate assembly and the longitudinal-plate assembly, increasing the difficulty for the conductive particles to reach the conductive components in the second contact chamber. Therefore, the adhesion of the conductive particles to the conductive components in the second contact chamber can be effectively reduced, thereby reducing the possibility of short circuits caused by the contact of conductive particles with different conductivities.
[0022] In a possible design, the material of the partition structure is a flame-retardant material.
[0023] With the above-provided solution, the flame-retardant material can effectively prevent phenomena such as combustion and explosion caused by internal short circuits in the circuit breaker, improving the safety of the circuit breaker.
[0024] In a possible design, a moving contact and a moving contact support member connected to the moving contact are provided in the second contact chamber, and the moving contact support member is located in the second space.
[0025] With the solution provided above, when the moving contact support provided in the second contact chamber is in the open state, the linear distance between it and the release passing through the first through hole is the shortest. The moving contact support in the second contact chamber is likely to form a short circuit problem with the release due to the adhesion of conductive particles. The moving contact support is located within the second space, which can effectively prevent the conductive particles from flying between the release and the moving contact support, thus avoiding the short circuit problem.
[0026] The above description is only an overview of the technical solution of the embodiment of the present application. In order to be able to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the content of the specification. And in order to make the above and other purposes, features, and advantages of the embodiment of the present application more obvious and understandable, the following specifically illustrates the specific implementation manners of the present application. Description of the Drawings
[0027] Figure 1 It is a schematic diagram of a leakage circuit breaker with a partition structure provided in an embodiment of the present application.
[0028] Figure 2 is Figure 1 A cross-sectional view along the A-A1 section.
[0029] Figure 3 It is a schematic diagram of the partition structure provided in an embodiment of the present application.
[0030] Figure 4 It is a schematic diagram of the partition structure provided in another embodiment of the present application.
[0031] Description of the reference numerals: 100, the first contact chamber; 110, the release; 200, the second contact chamber; 210, the connecting rod; 220, the spring; 300, the partition structure; 310, the horizontal plate assembly; 320, the vertical plate assembly; 311, the sub-horizontal plate; 321, the sub-vertical plate; 322, the first avoidance groove; 312, the second avoidance groove; 410, the first chamber partition; 420, the second chamber partition; 411, the first through hole. Detailed Description of the Embodiment
[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims, and drawings of this application are intended to cover non-exclusive inclusion.
[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of this application. The phrase "embodiments" appearing in various places in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0035] The term "and / or" herein is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: the existence of A, the simultaneous existence of A and B, and the existence of B. Additionally, the character " / " herein generally represents an "or" relationship between the associated objects before and after.
[0036] The directional terms appearing in the following description are all the directions shown in the figures and do not specifically limit the structure of the leakage circuit breaker of this application. For example, in the description of this application, terms such as "center", "longitudinal", "transverse", "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 drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this application.
[0037] Furthermore, the terms "first", "second", etc. in the specification, claims, or the above-mentioned drawings of this application are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of such features.
[0038] In the description of this application, unless otherwise specified, "a plurality of" means two or more (including two). Similarly, "a plurality of groups" means two or more groups (including two groups).
[0039] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, the "connection" or "coupling" of mechanical structures can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection through a spacer, such as a fixed connection through screws, bolts, or other spacers; a physical connection can also be a detachable connection, such as a snap connection or a snap-fit connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. The "connection" or "coupling" of circuit structures 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, that is, a physical connection, or it can be indirectly connected through at least one intermediate element, as long as the circuit is connected. It can also be the connection of two elements inside. In addition to signal connection through a circuit, signal connection can also refer to signal connection through a media medium, such as radio waves. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0040] As a switch, a residual current circuit breaker can quickly cut off the power supply circuit when the leakage current in the power supply circuit exceeds a predetermined value to avoid dangerous situations such as electric shock to the human body and equipment leakage.
[0041] A circuit breaker generally has a power terminal and a load terminal. The power terminal is used to connect to the power supply, and the load terminal is used to connect to the load. In the residual current protection circuit, there will be a leakage identification circuit and a trip device. Here, the residual current protection circuit often draws power from the load terminal of the residual current circuit breaker. If the residual current circuit breaker is normally wired (that is, the power terminal is connected to the power supply and the load terminal is connected to the load), when the residual current circuit breaker is tripped, since the main circuit contact assembly is disconnected (the electrical connection with the power terminal is in a disconnected state), the trip device will also lose power. However, in some special cases, it is often necessary to reverse the wiring of the circuit breaker. Here, reversing the wiring means connecting the power terminal that should theoretically be connected to the power supply to the load in the actual circuit, and connecting the load terminal that should theoretically be connected to the load to the power supply in the actual circuit. The consequence of such a connection is that after the residual current circuit breaker identifies a leakage, it could originally rely on the main circuit conductor to cut off the power supply to make the current on the trip device circuit disappear, but now it cannot be achieved because the current directly flows from the load terminal to the trip device. Therefore, in the case of a reversed wiring disconnection, the trip device will be energized.
[0042] In the related art, an opening groove for the release to pass through is provided on the partition between two adjacent contact chambers for wiring, and in order to ensure the movement of the release, there needs to be sufficient clearance between the opening groove and the release. Therefore, when the moving contact and the static contact in one of the contact chambers are separated, a large number of conductive particles generated will enter the other contact chamber along this clearance and contact the conductive components therein. If the release is in a charged state, the conductive particles will cause a short circuit between the release and the conductive components, resulting in phase-to-phase breakdown and affecting the normal use of the circuit breaker.
[0043] In view of this, the present application provides a leakage circuit breaker, and a partition structure is provided in the contact chamber where there is a risk of short circuit between the release and the conductive components to block the conductive particles from scurrying around in two adjacent contact chambers, thereby avoiding the problem of phase-to-phase breakdown.
[0044] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Figure 1 It is a schematic diagram of the leakage circuit breaker provided in the embodiment of the present application with a partition structure. Figure 2 For Figure 1 The sectional view along the A-A1 section. Please refer to Figure 1 And Figure 2 The leakage circuit breaker includes adjacent first contact chamber 100 and second contact chamber 200, first chamber partition 410, first through hole 411 and partition structure 300.
[0045] The leakage circuit breaker includes a plurality of contact chambers, and the plurality of contact chambers are arranged side by side in the first direction. The first contact chamber 100 and the second contact chamber 200 are two of the contact chambers provided with a release 110, and the release 110 needs to pass through the first contact chamber 100 to the second contact chamber 200. A contact mechanism is installed in each contact chamber, and each contact mechanism corresponds to a different phase of the circuit breaker. The contact mechanism includes a conductive component, and the conductive component includes a static contact, a moving contact and a moving contact support member connected to the moving contact. The static contact, the moving contact and the moving contact support member connected to the moving contact are all conductive components.
[0046] A chamber partition is provided between two adjacent contact chambers to isolate different contact chambers from each other. The first chamber partition 410 is used to isolate the first contact chamber 100 and the second contact chamber 200.
[0047] It can be understood that currently, the chamber partition is formed by the mutual covering of an insulating cover plate part located above and a base part located below to form a plate with an isolating function that can isolate two adjacent contact chambers.
[0048] The first via 411 is located on the first chamber partition 410. Specifically, the first via 411 is located in the insulating cover plate portion. The insulating cover plate portion is provided with a corresponding groove, and when it is covered with the lower base portion, the first via 411 is formed. The first via 411 enables the trip unit 110 assembly to pass from the first contact chamber 100 through the first via 411 into the second contact chamber 200. The trip unit 110 is an essential part of the circuit breaker. Its function is to, when a fault occurs in the circuit, through the electromagnetic force generated by the shunt trip unit 110, quickly separate the contacts of the circuit breaker, thereby cutting off the faulty circuit and ensuring the safe operation of the power system. Therefore, the trip unit 110 needs to be connected to the contact mechanisms in different contact chambers. The first via 411 is provided to ensure that the trip unit 110 can pass through, so as to enable connections to be formed with each contact chamber.
[0049] The partition structure 300 is fixed on the first chamber partition 410 and is located on one side of the second contact chamber 200, dividing the space of the second contact chamber 200 into a first space and a second space. The trip unit 110 is located in the first space, and the conductive components in the second contact chamber 200 are located in the second space.
[0050] In this embodiment, since the partition structure 300 is provided in the second contact chamber 200, and the partition structure 300 divides the space of the second contact chamber 200 into a first space and a second space, such that the trip unit 110 assembly is located in the first space and the conductive components in the second contact chamber 200 are located in the second space. When the conductive particles generated due to the separation of the moving and static contacts in the first contact chamber 100 move to the first via 411, because of the setting of the partition structure 300, even if they pass through the first via 411, they will never come into contact with the conductive components in the second contact chamber 200. Therefore, the problem of short - circuit between the trip unit 110 and the conductive components caused by conductive particles can be effectively avoided. Additionally, since the conductive components in the second contact chamber 200 are always in the second space, the generated conductive particles cannot cause a short - circuit between the conductive components in the second contact chamber 200 and the conductive components in the first contact chamber 100, thus avoiding the problem of phase - to - phase breakdown.
[0051] Please refer to Figure 2 , in the second contact chamber 200, a moving contact and a moving contact support member connected to the moving contact are provided. The moving contact support member includes a spring 220 and a connecting rod 210 connected to the moving contact, and is located in the second space.
[0052] In the structural design of the circuit breaker, the moving contact support moves to drive the movement of the moving contact to achieve the closing or opening between the moving contact and the static contact. And in the state where the circuit breaker has reverse incoming lines, when the moving contact and the static contact are opened, the release 110 is energized. When the moving contact and the static contact are opened, the linear distance between the spring 220 in the moving contact support and the release 110 passing through the first through hole 411 is very close, which causes the moving contact support and the release 110 to be very likely to be short-circuited due to the presence of conductive particles at this time. In this embodiment, the moving contact support is located in the second space, which can effectively prevent the conductive particles in the first contact chamber 100 from flying to between the release 110 and the moving contact support, thus effectively preventing the problem of short circuit between the release 110 and the moving contact support in the second contact chamber 200.
[0053] Figure 3 It is a schematic diagram of the partition structure 300 provided in an embodiment of the present application. Please refer to Figure 3 , the partition structure 300 includes a horizontal plate assembly 310 and a vertical plate assembly 320. The horizontal plate assembly 310 is perpendicular to the first chamber partition 410, and the vertical plate assembly 320 is laid flat on one side of the first chamber partition 410 located in the second contact chamber 200.
[0054] In this embodiment, the horizontal plate assembly 310 is perpendicular to the first chamber partition 410, dividing the second contact chamber 200 into two spaces, so that the release 110 passing from the first contact chamber 100 to the second contact chamber 200 will not form a short circuit with the conductive components in the second contact chamber 200 due to conductive particles.
[0055] The vertical plate assembly 320 is arranged to fit on the surface of the first chamber partition 410 on one side located in the second contact chamber 200, and spreads out flat along the surface of the first chamber partition 410 to form on the surface of the first chamber partition 410. When the conductive particles in the first contact chamber 100 move from the first through hole 411 to the second contact chamber 200 and are intercepted by the horizontal plate assembly 310 and flow in the first space, some of the conductive particles will touch the surface of the vertical plate assembly 320. Since some of the conductive particles will fall off or change their moving trajectories after touching, this can increase the moving path of the conductive particles from the first contact chamber 100 and increase the difficulty for the conductive particles to reach the conductive components in the second contact chamber 200. Therefore, it can effectively reduce the adhesion of the conductive particles to the conductive components in the second contact chamber 200, thereby reducing the possibility of short circuit caused by the mutual contact of conductive particles with different conductivities.
[0056] In some embodiments, the horizontal plate assembly 310 is composed of a plurality of sub-horizontal plates 311 spliced together, and at least two sub-horizontal plates 311 are not on the same horizontal plane.
[0057] Since the heights of the respective conductive components in the contact chamber are different, and sufficient space needs to be reserved for the installation and movement of the conductive components, the positions of the respective sub-horizontal plates 311 can be designed according to the installation heights and movement trajectories of the respective conductive components. The respective sub-horizontal plates 311 can be arranged in an offset manner up and down, or individual sub-horizontal plates 311 can be designed to be inclined according to the needs of the bottom conductive components, so that the respective sub-horizontal plates 311 are not on the same horizontal plane, as long as the respective sub-horizontal plates 311 can be spliced into a whole to divide the second contact chamber 200 into two independent upper and lower spaces.
[0058] It can be seen from this that the setting that the horizontal plate assembly 310 is formed by splicing a plurality of sub-horizontal plates 311 enables the horizontal plate assembly to change according to the positions and structures of the components in the contact chamber, and the adaptability of the horizontal plate assembly is stronger and the flexibility is higher.
[0059] It can be understood that the above up and down refers to Figure 2 For example, taking the upper direction of the paper surface as the upper direction and the lower direction of the paper surface as the lower direction. The upper independent space is the first space, and the lower independent space is the second space.
[0060] Furthermore, in this embodiment, the splicing of a plurality of sub-horizontal plates 311 extends the crawling path of the conductive particles on the horizontal plate assembly 310, thereby reducing the possibility of short circuit caused by the contact of conductive particles with different electricities.
[0061] In some embodiments, at least one second through hole is further provided on the first chamber partition 410, and the second through hole is used for the linkage insulating member of the leakage circuit breaker to pass through. Since there needs to be a circuit connection between the first contact chamber 100 and the second contact chamber 200 in the circuit breaker, the setting of the second through hole facilitates the formation of a connection between the conductive components in the first contact chamber 100 and the conductive components in the second contact chamber 200, or facilitates the components in the first contact chamber 100 to pass through the second through hole into the second contact chamber 200.
[0062] Such as Figure 3 and Figure 4 As shown, in some embodiments, the longitudinal plate assembly 320 is formed by splicing a plurality of sub-longitudinal plates 321. The sub-longitudinal plates 321 are arranged to fit the surface of the first chamber partition 410, and the sub-longitudinal plates 321 are provided with first avoidance grooves 322 according to the first through holes 411 and the second through holes on the first chamber partition 410.
[0063] Such as Figure 3 and Figure 4As shown, the first avoidance groove 322 refers to a through hole formed at a corresponding position according to the shape and area of the first via hole 411 and / or the second via hole, aiming to avoid being blocked due to insufficient avoidance space on the sub-vertical plate 321 when the conductive components in the first contact chamber 100 and the conductive components in the second contact chamber 200 are connected, or when the components in the first contact chamber 100 pass through the second via hole into the second contact chamber 200, so as to ensure the smooth connection of the conductive components in the first contact chamber 100 and the conductive components in the second contact chamber 200, or facilitate the smooth passage of the components in the first contact chamber 100 from the second via hole into the second contact chamber 200.
[0064] Wherein, the number of the first avoidance grooves 322 can be one or two. When only one first avoidance groove 322 is provided, the position and size of the first avoidance groove 322 can cover the first via hole 411 and the second via hole simultaneously; when the number of the first avoidance grooves 322 is two, the positions and sizes of the two first avoidance grooves 322 cover the first via hole 411 and the second via hole respectively.
[0065] In some embodiments, the first contact chamber 100 and the second contact chamber 200 are arranged side by side in the first direction. On one side of the second contact chamber 200 is the first chamber partition 410. Along the first direction, on the opposite side of the second contact chamber 200 relative to the first chamber partition 410 is the second chamber partition 420. One side of the cross-plate assembly 310 in the first direction is in contact with the vertical-plate assembly 320, and the other side of the cross-plate assembly 310 in the first direction is in contact with the second chamber partition 420.
[0066] The first chamber partition 410 is arranged in the second contact chamber 200. The left and right sides of the first chamber partition 410 respectively abut against the first chamber partition 410 and the second chamber partition 420, so that the second contact chamber 200 is divided into an upper first space and a lower second space. In this way, the conductive particles in the first space are blocked from contacting the conductive components or conductive particles in the second space, thereby avoiding the short-circuit connection of the conductive components in the first contact chamber 100 and the conductive components in the second contact chamber 200.
[0067] Figure 4 For the schematic diagram of the partition structure 300 provided in another embodiment of the present application, please refer to Figure 4, a raised structure is provided on one side of the second chamber partition 420 located in the second contact chamber 200. The purpose of this raised structure is to cooperate with some avoidance structures provided for wiring or space in other chambers of the circuit breaker. That is to say, the second chamber partition 420 is not a strictly planar structure in design. Therefore, a second avoidance groove 312 is correspondingly provided on the side of the cross plate assembly 310 in contact with the second chamber partition 420. The second avoidance groove 312 cooperates with the raised structure so that the end face of the cross plate assembly 310 abuts against the second chamber partition 420. The second avoidance groove 312 enables the end face of the cross plate assembly 310 to be in close contact with the second chamber partition 420, reducing the gap between the cross plate assembly 310 and the second chamber partition 420, enabling the cross plate assembly 310 to be more firmly fixed on the second chamber partition 420, preventing the conductive particles in the first space from contacting the conductive components in the second space due to detachment of the cross plate assembly 310, and thus ensuring the stability of the circuit breaker.
[0068] In some embodiments, the surfaces of the cross plate assembly 310 and the longitudinal plate assembly 320 are provided with concavo-convex structures, which are used to increase the surface areas of the cross plate assembly 310 and the longitudinal plate assembly 320.
[0069] The concavo-convex structure can be a depression or a protrusion provided on the surface of the cross plate assembly 310 or the longitudinal plate assembly 320. Whether it is a depression or a protrusion, it can increase the surface areas of the cross plate assembly 310 and the longitudinal plate assembly 320. Thus, when the conductive particles touch and move on the surfaces of the cross plate assembly 310 and the longitudinal plate assembly 320, the moving path increases, thereby increasing the difficulty for the conductive particles to reach the conductive components in the second contact chamber 200. Therefore, it can effectively reduce the adhesion of the conductive particles to the conductive components in the second contact chamber 200, thereby reducing the possibility of short circuit caused by the contact of conductive particles with different conductivities.
[0070] The material of the partition structure 300 in this embodiment is an insulating and flame-retardant material. For example, it can be nylon material.
[0071] The insulating material and the flame-retardant material can effectively prevent phenomena such as combustion or explosion caused by short circuit inside the circuit breaker, improving the safety of the circuit breaker.
[0072] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A leakage circuit breaker, characterized in that, Comprising: Adjacent first contact chambers and second contact chambers, each of the first contact chamber and the second contact chamber having a conductive component; A first chamber partition for separating the first contact chamber and the second contact chamber; A first through hole located on the first chamber partition to enable the trip unit assembly to pass from the first contact chamber through the first through hole into the second contact chamber; A partition structure fixed on the first chamber partition and located on one side of the second contact chamber, separating the space of the second contact chamber into a first space and a second space, the trip unit assembly being located in the first space, and the conductive component in the second contact chamber being located in the second space.
2. The residual current circuit breaker according to claim 1, characterized in that, The partition structure includes a transverse plate assembly and a longitudinal plate assembly, the transverse plate assembly being perpendicular to the first chamber partition, and the longitudinal plate assembly being laid flat on one side of the first chamber partition where the second contact chamber is located.
3. The residual current circuit breaker according to claim 2, wherein, The transverse plate assembly is formed by splicing a plurality of sub-transverse plates, and at least two sub-transverse plates are not in the same horizontal plane.
4. The residual current circuit breaker according to claim 2, characterized in that, At least one second through hole is further provided on the first chamber partition for the linkage insulating member of the leakage circuit breaker to pass through.
5. The residual current circuit breaker according to claim 4, characterized in that, The longitudinal plate assembly is formed by splicing a plurality of sub-longitudinal plates, the sub-longitudinal plates being arranged in contact with the surface of the first chamber partition, and the sub-longitudinal plates being provided with first avoidance grooves according to the first through hole and the second through hole on the first chamber partition.
6. The residual current circuit breaker according to claim 2, characterized in that, The first contact chamber and the second contact chamber are arranged side by side in a first direction. On one side of the second contact chamber is the first chamber partition. In the first direction, on the opposite side of the second contact chamber relative to the first chamber partition is a second chamber partition. One side of the transverse plate assembly in the first direction is in contact with the longitudinal plate assembly, and the other side of the transverse plate assembly in the first direction is in contact with the second chamber partition.
7. The residual current circuit breaker according to claim 6, wherein, The second chamber partition is provided with a raised structure on one side of the second contact chamber. The transverse plate assembly is provided with a second avoidance groove on the side in contact with the second chamber partition. The second avoidance groove cooperates with the raised structure so that the end face of the transverse plate assembly abuts against the second chamber partition.
8. The residual current circuit breaker according to claim 2, characterized in that, The surfaces of the transverse plate assembly and the longitudinal plate assembly are provided with concave-convex structures for increasing the surface areas of the transverse plate assembly and the longitudinal plate assembly.
9. The leakage circuit breaker according to claim 1, characterized in that, The material of the partition structure is a flame-retardant material.
10. The residual current circuit breaker according to claim 1, wherein, A moving contact and a moving contact support member connected to the moving contact are provided in the second contact chamber, and the moving contact support member is located in the second space.