Auxiliary switch and circuit breaker

Abstract

The invention relates to the technical field of circuit breakers, in particular to an auxiliary switch and a circuit breaker. The auxiliary switch comprises a base, a wiring terminal and a power connection module. The first surface of the base is connected to the circuit breaker. And the wiring terminal is connected to the second surface of the base. The power connection module comprises a lower cover, an upper cover, a plug connector and a wire. The first side of the lower cover is connected to the second face in the first direction. The second side of the lower cover is provided with a containing cavity. The containing cavity comprises a mounting face and an opening which are oppositely arranged in the first direction. The plug connector is connected to the mounting surface and is provided with a plug groove; and the wiring terminal passes through the mounting surface, enters the accommodating cavity and is inserted into the plugging groove. The upper cover is buckled on the opening in the first direction. According to the auxiliary switch, the wire is connected with the plug connector and extends on the mounting surface, and the mounting surface is perpendicular to the buckling direction of the upper cover, so that the wire can be prevented from being in contact with the upper cover, the wire is prevented from being broken at the welding position, current in the wire can normally flow, and the reliability of the monitoring function of the auxiliary switch is improved.

Description

Technical Field

[0001] This application relates to the field of circuit breaker technology, and more particularly to an auxiliary switch and circuit breaker. Background Technology

[0002] A circuit breaker is an electrical device that controls the flow of current. Connected to a circuit system, it protects the system from short circuits or overloads. A circuit breaker includes an operating device, a breaking device, and an auxiliary switch. The operating device operates within the circuit breaker, controlling the contact assembly in the breaking device to open and close, thus controlling the flow of current within the circuit breaker. The auxiliary switch is connected to the operating device, allowing it to provide feedback on the current flow status based on the operating device's actions. The auxiliary switch requires an external power supply to display the current flow status via an indicator light or digital display. The external power supply is provided by connecting the terminal blocks to an external connector via wires.

[0003] In related technologies, the wiring terminals are located inside the auxiliary switch, while the external plug is located outside the auxiliary switch. When the wires are bent and routed through the auxiliary switch after being soldered to the wiring terminals, they are prone to bending and breaking at the solder joints, thus causing the auxiliary switch to lose its monitoring and protection function for the circuit breaker. Summary of the Invention

[0004] This application provides an auxiliary switch and circuit breaker to solve the problem that wires are prone to bending and breaking at the weld joint, thereby improving the reliability of the auxiliary switch monitoring function.

[0005] In a first aspect, this application provides an auxiliary switch for a circuit breaker, comprising: a base, terminals, and a power connection module. A first surface of the base is connected to the circuit breaker. The terminals are connected to a second surface of the base. The first and second surfaces are two surfaces of the base facing each other in a first direction. The power connection module includes a lower cover, an upper cover, a connector, and a wire. A first side of the lower cover is connected to the second surface along the first direction. The second side of the lower cover has a receiving cavity. The first and second sides are two opposite sides of the lower cover in the first direction. The receiving cavity includes a mounting surface and an opening facing each other along the first direction, the plane containing the mounting surface and the opening being perpendicular to the first direction. The connector is located in the receiving cavity and connected to the mounting surface, and the connector has a connector slot. The terminals pass through the mounting surface into the receiving cavity and are inserted into the connector slot. The wire is connected to the connector and extends along the mounting surface. The upper cover is fastened to the opening along the first direction.

[0006] According to the description in the first aspect, when the lower cover of the power connection module is connected to the base of the auxiliary switch, the wiring terminals can be directly inserted through the lower cover into the insertion slots of the connectors, thereby completing the connection between the wiring terminals and the external power supply. Compared to the related technologies where operators directly connect wires to the wiring terminals to achieve the connection between the wiring terminals and the external power supply, the power connection module in this application is a highly integrated independent module. Using this power connection module to complete the connection between the wiring terminals and the external power supply eliminates the need for multiple soldering operations, greatly reducing the difficulty of connecting the wiring terminals and the external power supply, saving assembly time, and reducing time costs. In addition, the wires in the power connection module of this application extend on the mounting surface, and the plane where the mounting surface is located is perpendicular to the first direction, that is, perpendicular to the snapping direction of the upper cover. This directly avoids the wires from contacting the upper cover, thereby preventing the welded joints of the wires and connectors from being forcibly pressed and bent, preventing the wires from being broken at the welded joints, allowing the current in the wires to flow normally, and thus improving the reliability of the auxiliary switch monitoring function. Meanwhile, extending the wires on the mounting surface can greatly reduce the space occupied by the wires in the first direction, thereby reducing the design size of the power connection module in the first direction, and further reducing the design size of the auxiliary switch in the first direction, thus reducing production costs.

[0007] In one possible design, multiple terminal blocks are arranged in an array on the base. Each terminal block corresponds to a connector and a wire. Multiple sets of wiring slots are provided on the mounting surface, each set corresponding to a wire. A wiring slot is a space formed between two partitions connected to the mounting surface. When a wire is placed in a wiring slot, the two partitions are located on opposite sides of the wire. The dimension of the partition in the first direction is larger than the wire diameter.

[0008] Based on the description of the above embodiments, a wiring groove composed of partitions is provided on the mounting surface, and multiple wires are respectively placed in their respective wiring grooves. This ensures that the wires are securely confined to a predetermined path, preventing electrical short circuits or unreliable connections that may result from wire movement or loosening. Furthermore, compared to related technologies, this application achieves electrical insulation between wires through the partitions in the wiring groove. This feature of the wiring groove simultaneously achieves both wire management and insulation effects, eliminating the need for thermoplastic tubing on the wires, reducing the number of components, and eliminating the risk of thermoplastic tubing breakage. This achieves both reduced production costs and guaranteed electrical insulation in the auxiliary switch.

[0009] In one possible design, the connector has a solder point on one side in a second direction, perpendicular to the first direction. One end of the wire is soldered to the solder point. The wiring channel includes an inlet, through which the other end of the wire enters the wiring channel. The projection of the inlet in the second direction overlaps with the projection of the solder point in the second direction, ensuring that the other end of the wire enters the inlet straight.

[0010] Based on the description of the above embodiments, the connector has a solder point on one side in the second direction, so that after one end of the wire is soldered to the solder point, the other end extends naturally along the second direction. The projection of the inlet of the wiring trough in the second direction overlaps with the projection of the solder point in the second direction, so that the wiring trough can be located on the path where the other end of the wire extends freely along the second direction, so that the other end enters the inlet straight. This allows the wire to be laid in a straight and non-redundant bend when entering the wiring trough, eliminating problems such as stress concentration, fatigue damage or decreased connection reliability caused by the wire being forced to bend at the entrance, optimizing the stability of current flow in the wire, and thus improving the reliability of the auxiliary switch monitoring function.

[0011] In one possible design, the wiring channel includes a first section and a second section. One end of the first section is connected to the inlet. The second section is connected to the other end of the first section and is perpendicular to the first section. A first distance exists between the other end of the first section and the solder joint. The first distance is greater than or equal to the wire diameter.

[0012] Based on the description of the above embodiments, the first section of the wiring trough is used to guide and accommodate the wires into the wiring trough. The second section, perpendicular to the first section, can be used to change the wiring direction of the wires so that the wires are arranged compactly and orderly on the mounting surface. The first distance between the other end of the wiring trough connected to the second section and the welding point is greater than or equal to the wire diameter, so that there is sufficient space at the connection between the first and second sections for the wires to bend. This avoids the wires from breaking due to excessive mechanical stress at the bend point caused by insufficient bending radius, thereby allowing the current in the wires to flow normally, and thus improving the reliability of the auxiliary switch monitoring function.

[0013] In one possible design, the connector includes two pressure plates. The space between the two pressure plates forms a connector slot. An arc-shaped structural block is provided on the side of the pressure plate facing the connector slot. The minimum distance between the two arc-shaped structural blocks is less than the dimension of the terminal block in a third direction. The third direction is the arrangement direction of the two pressure plates and is perpendicular to the first direction.

[0014] Based on the description of the above embodiments, when the connector is inserted into the connector slot, the pressure plate abuts against the connector in the third direction to prevent the connector from moving in the third direction, thereby ensuring the stability of the connection. Furthermore, the minimum distance between the arc-shaped structural blocks on the two pressure plates is less than the dimension of the terminal block in the third direction, so that the connector slot and the terminal block have an interference fit. This allows the connector slot to clamp the terminal block, and the arc-shaped structural blocks to provide a larger local clamping force to the terminal block, improving the stability of the connection between the terminal block and the connector, thereby improving the reliability of the electrical connection between the terminal block and the external power supply.

[0015] In one possible design, a first limiting structure is provided on the mounting surface. The first limiting structure abuts against the connector to prevent the connector from moving on the mounting surface. A first pressing block is provided on the top cover. When the top cover is fastened onto the opening, the first pressing block presses the connector tightly in a first direction.

[0016] Based on the description of the above embodiments, the first limiting structure abuts against the connector to achieve initial limiting of the connector on the plane where the mounting surface is located. The first pressing block presses the connector to achieve limiting of the connector in the first direction. Since the plane where the mounting surface is located is perpendicular to the first direction, the first limiting structure and the first pressing block work together on the connector to form a complete constraint on the connector in six degrees of freedom in space, so that the connector is stably and reliably installed in the receiving cavity, thereby ensuring the stability of the connection between the connector and the terminal block, and thus improving the reliability of the electrical connection between the terminal block and the external power supply.

[0017] In one possible design, a second pressure block is provided on the top cover. When the top cover is fastened onto the opening, the second pressure block presses the wire in a first direction.

[0018] Based on the description of the above embodiments, when the upper cover is fastened to the opening of the lower cover along the first direction, the second pressing block applies a vertically downward pressing force to the wire along the first direction. Additionally, the partition of the wiring channel provides a horizontal limit for the wire, preventing lateral movement. The synergistic effect of the second pressing block and the partition ensures that the wire maintains its preset wiring shape and position even under complex operating conditions, thereby improving the long-term reliability of the electrical connections in the auxiliary switch and avoiding the risk of interference or short circuits to other components due to wire displacement.

[0019] In one possible design, a circuit board is mounted on the mounting surface. The circuit board is electrically connected to a connector. A display element is mounted on the circuit board. A first viewing window is provided on the top cover. When the top cover is fastened onto the opening, the projection of the first viewing window in a first direction covers the projection of the display element in the first direction.

[0020] Based on the description of the above embodiments, the circuit board with the indicator is electrically connected to the connector so that the indicator reflects the on / off status of the circuit in the circuit breaker by displaying different visual information. The projection of the first viewing window in the first direction covers the projection of the display in the first direction, so that the operator can see the visual information of the indicator in the first viewing window to judge the on / off status of the circuit in the circuit breaker, realizing the external visualization of the status information and also reflecting the monitoring function of the additional switch.

[0021] In one possible design, a second limiting structure is provided on the mounting surface. The second limiting structure abuts against the circuit board to prevent the circuit board from moving on the mounting surface. A third pressure block is provided on the top cover. When the top cover is fastened onto the opening, the third pressure block presses the circuit board firmly in a first direction.

[0022] Based on the description of the above embodiments, the second limiting structure abuts against the circuit board to achieve initial limiting of the circuit board on the plane where the mounting surface is located. The third pressure block presses the circuit board to achieve limiting of the circuit board in the first direction. Since the plane where the mounting surface is located is perpendicular to the first direction, the second limiting structure and the third pressure block work together on the circuit board to form a complete constraint on the circuit board in six degrees of freedom in space, so that the circuit board is stably and reliably installed in the receiving cavity, thereby ensuring the stability of the connection between the circuit board and the connector, ensuring that the display on the circuit board can normally display the on / off status of the current in the circuit breaker, and thus improving the reliability of the additional switch monitoring function.

[0023] Secondly, this application provides a circuit breaker, including a body, a cover, and an auxiliary switch as described in any of the above embodiments. The base of the auxiliary switch is connected to the body. The cover covers the body and the auxiliary switch. The upper cover of the auxiliary switch faces the cover. A second viewing window is provided on the cover, and the upper cover has a first viewing window. The projection of the second viewing window onto the upper cover covers the first viewing window.

[0024] Based on the description of the above embodiments, a second viewing window is provided on the cover, and the projection of the second viewing window on the upper cover covers the first viewing window, so that the operator can see the first viewing window in the second viewing window from outside the circuit breaker, and judge the on / off status of the circuit in the circuit breaker by seeing the visual information of the indicator through the first viewing window, so as to realize the monitoring function of the auxiliary switch.

[0025] The circuit breaker provided in the second aspect above has the same beneficial effects as the first aspect and the various possible implementations of the first aspect, and will not be repeated here. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of an auxiliary switch in one embodiment of this application.

[0028] Figure 2 for Figure 1A magnified view of part A in the middle.

[0029] Figure 3 This is a schematic diagram of the assembly of the base and the lower cover in the embodiment of the application.

[0030] Figure 4 for Figure 3 A magnified view of part B in the middle section.

[0031] Figure 5 This is a schematic diagram of one structure of the upper cover in an embodiment of this application.

[0032] Explanation of reference numerals in the attached figures: 100-Auxiliary switch; 1-Base; 2-Terminal block; 3-Power connection module; 31-Lower cover; 311-Mounting surface; 312-Opening; 313-Mounting hole; 314-Outlet; 32-Top cover; 321-First viewing window; 33-Plug-in component; 331-Plug-in slot; 332-Pressure plate; 4-Wiring channel; 41-Partition; 42-Inlet; 43-First section; 44-Second section; 5-First limiting structure; 6-Second pressure block; 7-Circuit board; 8-Second limiting structure; 9-Lever structure; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0035] The terms "comprising" and "having," and any variations thereof, used in the specification, claims, and drawings of this application are intended to cover without excluding other meanings. The words "a" or "an" do not exclude the presence of multiples.

[0036] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0038] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] Furthermore, the descriptions of directions such as the X direction, Y direction, and Z direction used to explain the operation and construction of the components in this embodiment are not absolute but relative. Although these directions are appropriate when the components are in the positions shown in the figure, they should be interpreted differently when these positions change to correspond to the changes.

[0040] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0041] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0042] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. In circuit structures, "connection" or "linkage" 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 component, as long as the circuit is connected; it can also refer to the internal connection of two components. Signal connection can refer not only to signal connection through a circuit but also to signal connection through a media, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] A circuit breaker is an electrical device that controls the flow of current. Connected to a circuit system, it protects the system from short circuits or overloads. A circuit breaker includes an operating device, a breaking device, and an auxiliary switch. The operating device operates within the circuit breaker, controlling the contact assembly in the breaking device to open and close, thus controlling the flow of current within the circuit breaker. The auxiliary switch is connected to the operating device, allowing it to provide feedback on the current flow status based on the operating device's actions. The auxiliary switch requires an external power supply to display the current flow status via an indicator light or digital display. The external power supply is provided by connecting the terminal blocks to an external connector via wires.

[0044] In related technologies, the wiring terminals are located inside the auxiliary switch, while the external plug is located outside the auxiliary switch. When the wires are bent and routed through the auxiliary switch after being soldered to the wiring terminals, they are prone to bending and breaking at the solder joints, thus causing the auxiliary switch to lose its monitoring and protection function for the circuit breaker.

[0045] Specifically, in order to reduce the installation space of the auxiliary switch, the distance between the auxiliary switch housing and the terminal block is small. In related technologies, the wires are soldered to the terminal blocks and extend towards the housing of the auxiliary switch. This causes the solder joint between the wires and the terminal blocks to be forcibly bent after contacting the housing, making the wires prone to breakage at the solder joint.

[0046] Based on this, this application proposes an auxiliary switch and circuit breaker that avoids bending of the conductor at the weld joint by changing the direction of the conductor's extension, thereby preventing conductor breakage and allowing the current in the conductor to flow normally, thus improving the reliability of the auxiliary switch's monitoring function. The following is in conjunction with... Figures 1-5 Please provide a detailed explanation.

[0047] Firstly, such as Figure 1 As shown, this application provides an auxiliary switch 100 for use in a circuit breaker. The auxiliary switch 100 includes a base 1, a terminal block 2, and a power connection module 3. A first surface of the base 1 is connected to the circuit breaker. The terminal block 2 is connected to a second surface of the base 1. The first surface and the second surface are two surfaces of the base 1 that are opposite to each other in a first direction X. The power connection module 3 includes a lower cover 31, an upper cover 32, a connector 33, and a wire. A first side of the lower cover 31 is connected to the second surface along the first direction X. The second side of the lower cover 31 has a receiving cavity. The first side and the second side are two opposite sides of the lower cover 31 in the first direction X. The receiving cavity includes a mounting surface 311 and an opening 312 that are opposite to each other along the first direction X. The plane containing the mounting surface 311 and the opening 312 is perpendicular to the first direction X. The connector 33 is located in the receiving cavity and connected to the mounting surface 311. The connector 33 has a connector groove 331. The terminal block 2 passes through the mounting surface 311 into the receiving cavity and is inserted into the connector groove 331. The wire is connected to the connector 33 and extends on the mounting surface 311. The top cover 32 is fastened to the opening 312 along the first direction X.

[0048] Among them, the base 1 is the structural base and mounting carrier of the auxiliary switch 100 of this application. Its core function is to provide mechanical support and positioning reference for the electrical components of the auxiliary switch 100, and to realize the mechanical connection and physical integration between the auxiliary switch 100 and the circuit breaker body.

[0049] Specifically, the base 1 has a first surface and a second surface disposed opposite to each other in a first direction X. The first direction X can be as follows: Figure 1 The auxiliary switch 100 shown is configured with the following installation orientation for the power connection module 3. The first side is directly connected to the circuit breaker, thus achieving a fixed installation of the entire auxiliary switch 100. Furthermore, connecting the first side to the circuit breaker facilitates the mechanical connection between the operating device in the circuit breaker and the transmission device of the auxiliary switch 100. The second side serves as a mounting platform for internal electrical components, connecting the terminal blocks 2 to the lower cover 31 of the power connection module 3.

[0050] like Figure 1As shown, in one specific embodiment, the transmission device may include a lever structure 9. When the operating device operates in the circuit breaker, it strikes the lever structure 9, causing the lever structure 9 to transmit its action to the auxiliary switch 100. The display module in the auxiliary switch 100 then displays information based on the operation, enabling those skilled in the art to accurately determine and monitor the on / off state of the circuit in the circuit breaker from the displayed content. The display module may be a circuit board 7 with a display element, which can control the display element to show different states according to the operation of the auxiliary switch 100.

[0051] The terminal block 2 is a conductive connector fixedly mounted on the second surface of the base 1. Its core function is to establish the connection between the operation of the circuit breaker's operating device and the display content of the display module within the auxiliary switch 100. Specifically, the transmission device in the circuit breaker can realize the electrical connection between the two terminal blocks 2 in the auxiliary switch. After the two terminal blocks 2 are connected to an external power supply, they can form a complete current loop. The display module is connected in the above loop, and the display content is controlled by the on / off state of the current in the loop.

[0052] Specifically, each display module can correspond to three or four terminals 2 arranged in sequence.

[0053] like Figure 1 As shown, in one specific embodiment, one display module corresponds to three terminals 2, and the terminal 2 between two terminals 2 is a shared terminal 2, which can form two loops with the other two terminals 2 respectively through wires. In another specific embodiment, one display module corresponds to four terminals 2, where two terminals 2 form a group to form two loops. In the two loops of the above two specific embodiments, one loop is used to display the disconnected state of the circuit, and the other loop is used to display the connected state of the circuit. Those skilled in the art can choose to connect the display module to any one of the loops to realize the display of the disconnected state or the connected state of the circuit.

[0054] Furthermore, circuit breakers can be used to control the switching of current in multiple circuits. For example, a circuit breaker may include four breaking devices, each capable of controlling the interruption of current in one circuit. Accordingly, such as Figure 1 As shown, the auxiliary switch 100 can also include four sets of display modules. The four display modules are arranged sequentially in the auxiliary switch 100, and are used to display the on / off status of the four sets of circuits respectively. Each display module corresponds to three or four terminals 2, so that twelve or sixteen terminals 2 can be fixedly connected to the second surface of the base 1.

[0055] like Figure 1As shown, in one specific embodiment, twelve terminal blocks 2 are fixedly connected to the second surface of the base 1. Specifically, three terminal blocks 2 are arranged in each column along the third direction Z on the second surface, and four columns are arranged along the second direction Y on the second surface. The second direction Y is perpendicular to the third direction Z. Each column of terminal blocks 2 corresponds to a set of display modules.

[0056] Among them, the power connection module 3 is an integrated and detachable electrical connection functional unit in the auxiliary switch 100 of this application. Its core function is to establish an electrical connection between the terminal block 2 and the external power supply.

[0057] Specifically, the power connection module 3 includes a modular housing and an electrical connection assembly disposed within the housing. The modular housing is composed of a lower cover 31 and an upper cover 32. The first side of the lower cover 31 is connected to the second surface of the base 1 along a first direction X, and its second side has a receiving cavity with an opening 312 at one end. The upper cover 32 is fastened to the opening 312 along the first direction X, forming a closed protective space for the electrical connection assembly. The electrical connection assembly includes a connector 33 and a wire. The connector 33 is housed within the receiving cavity and connected to its mounting surface 311. A connector slot 331 on the connector is used to receive the insertion of the terminal 2, establishing an electrical connection between the terminal 2 and the connector 33. The wire connects to the connector 33 and extends along the mounting surface 311 of the receiving cavity until it connects to an external power source, establishing an electrical connection between the connector 33 and the external power source. This achieves the electrical connection between the terminal 2 and the external power source, forming the aforementioned circuit, and enabling the additional switch to monitor the current flow status of the circuit breaker.

[0058] In one specific implementation, such as Figure 1 As shown, the mounting surface 311 may have the same number of mounting holes 313 as the terminal blocks 2, so that the terminal blocks 2 can pass through the mounting holes 313, pass through the mounting surface 311 and enter the receiving cavity, so that the terminal blocks 2 can be plugged into the connector 33.

[0059] In one specific embodiment, one end of the wire is connected to the connector 33, and the other end of the wire is connected to the external plug. The external plug can be located anywhere outside the receiving cavity, facilitating connection of the external plug to an external power source. Specifically, as shown... Figure 2 As shown, a cable outlet 314 can be provided on the side wall of the receiving cavity so that the other end of the wire leaves the receiving cavity through the cable outlet 314 and is connected to an external plug.

[0060] Preferably, in one specific embodiment, the upper cover 32 and the lower cover 31 are detachably connected, which facilitates wiring, maintenance, or replacement inside the power module 3. The detachable connection may include, but is not limited to, snap-fit ​​connections or bolt connections.

[0061] According to the description in the first aspect, when the lower cover 31 of the power connection module 3 is connected to the base 1 of the auxiliary switch 100, the terminal block 2 can be directly inserted through the lower cover 31 into the insertion slot 331 of the connector 33, thereby completing the connection between the terminal block 2 and the external power supply. Compared with the related technology where the operator directly connects wires to the terminal block 2 to achieve the connection between the terminal block 2 and the external power supply, the power connection module 3 in this application is a highly integrated independent module. Using this power connection module 3 to complete the connection between the terminal block 2 and the external power supply eliminates the need for multiple soldering operations, greatly reducing the difficulty of connecting the terminal block 2 and the external power supply, saving assembly time, and reducing time costs. Furthermore, in this application, the wires in the power connection module 3 extend on the mounting surface 311, and the plane containing the mounting surface 311 is perpendicular to the first direction X, that is, perpendicular to the fastening direction of the upper cover 32. This directly avoids contact between the wires and the upper cover 32, thereby preventing the welded joint between the wires and the connector 33 from being forcibly pressed and bent, preventing the wires from being broken at the welded joint, and allowing the current in the wires to flow normally, thus improving the reliability of the monitoring function of the auxiliary switch 100. At the same time, the extension of the wires on the mounting surface 311 can greatly reduce the space occupied by the wires in the first direction X, thereby reducing the design size of the power connection module 3 in the first direction X, and further reducing the design size of the auxiliary switch 100 in the first direction X, thus reducing production costs.

[0062] Furthermore, such as Figure 2 As shown, in some embodiments, multiple terminals 2 are arranged in an array on the base 1. Each terminal 2 corresponds to a connector 33 and a wire. Multiple sets of wiring slots 4 are provided on the mounting surface 311, each set corresponding to a wire. The wiring slot 4 is a space formed between two partitions 41 connected to the mounting surface 311. When the wire is placed in the wiring slot 4, the two partitions 41 are located on opposite sides of the wire. The dimension of the partition 41 in the first direction X is larger than the wire diameter.

[0063] The array arrangement of multiple terminals 2 on the base 1 refers to the terminals 2 being arranged in two mutually perpendicular directions, with both directions lying on the same plane. Specifically, as shown... Figure 1 As shown, twelve terminals 2 can be fixedly connected to the second surface of the base 1, with three terminals arranged in each column along the third direction Z and four columns arranged along the second direction Y, so as to realize the monitoring of the on / off status of multiple circuits by the auxiliary switch 100.

[0064] The wiring groove 4 is a limiting structure formed on the mounting surface 311 of the lower cover 31 of the power connection module 3, used for precise wiring and positioning of wires. Specifically, the wiring groove 4 is a strip-shaped space naturally formed between two spatially spaced and parallel partitions 41 connected to the mounting surface 311. When a wire is placed in its corresponding wiring groove 4, the two side walls of the wiring groove 4, i.e., the two partitions 41, can limit the wire from the opposite sides, effectively preventing the wire from shifting laterally on the mounting surface 311 or contacting other wires, ensuring neat, reliable and stable wiring, and avoiding the risk of short circuits.

[0065] Furthermore, the height dimension of the partition 41 in the first direction X is designed to be greater than the wire diameter of the wire it accommodates, ensuring that the partition 41 can completely cover and extend beyond the top of the wire, thereby forming an effective enclosure limit to prevent the wire from coming out of the wiring groove 4.

[0066] In related technologies, the wires are directly connected to the terminals 2. To prevent short circuits between multiple wires and multiple terminals 2, a thermoplastic tube for insulation is usually fitted at the weld joint between the wires and the terminals 2. The thermoplastic tube shrinks when heated to achieve efficient insulation by adhering closely to the outer surface of the wires. However, the thermoplastic tube has extremely poor toughness after shrinkage and is easily broken by external force. Therefore, when the wires are pressed against the outer casing, the thermoplastic tube fitted over the wires is also prone to breakage due to bending, thus affecting the electrical insulation effect in the auxiliary switch 100.

[0067] As described in the above embodiments, a wiring groove 4 composed of partitions 41 is provided on the mounting surface 311, and multiple wires are respectively placed in their respective wiring grooves 4, so that the wires are firmly confined on a predetermined path, avoiding electrical short circuits or unreliable connections that may be caused by wire movement or loosening. Furthermore, compared to related technologies, this application achieves electrical insulation between wires through the partitions 41 in the wiring groove 4. This feature of the wiring groove 4 simultaneously achieves both wire management and insulation effects, eliminating the need for thermoplastic tubing on the wires, reducing the number of components, and eliminating the risk of thermoplastic tubing breakage. This achieves both reduced production costs and ensures the electrical insulation effect in the auxiliary switch 100.

[0068] Furthermore, in some embodiments, the power connection module 3 and the base 1 are detachably connected.

[0069] In some specific implementations, the power connection module 3 and the base 1 can be detachably connected by standard connectors such as clips or bolts.

[0070] In some other specific embodiments, the connector 33 and the terminal block 2 are interference-fitted. The power module 3 and the base 1 can be detachably connected by the friction between the multiple connectors 33 and the multiple terminal blocks 2, without the need for additional standard connectors.

[0071] In some embodiments, such as Figure 3 and Figure 4 As shown, the connector 33 has a solder point on one side in the second direction Y. The second direction Y is perpendicular to the first direction X. One end of the wire is soldered to the solder point. The wiring trough 4 includes an inlet 42, through which the other end of the wire enters the wiring trough 4. The projection of the inlet 42 in the second direction Y overlaps with the projection of the solder point in the second direction Y, ensuring that the other end of the wire enters the inlet 42 straight.

[0072] Among them, the inlet 42 refers to the only channel or entrance set at the end of the wiring trough 4, which serves as the only channel or entrance for the wire to enter the wiring trough 4 from the external space and define the path.

[0073] The overlap between the projection of the inlet 42 in the second direction Y and the projection of the welding point in the second direction Y means that when the inlet 42 and the welding point are projected perpendicularly along the second direction Y, their projection areas on the projection plane at least partially overlap or are completely aligned.

[0074] According to the description of the above embodiment, the connector 33 has a soldering point on one side in the second direction Y, so that after one end of the wire is soldered to the soldering point, the other end extends naturally along the second direction Y. The projection of the inlet 42 of the wiring trough 4 in the second direction Y overlaps with the projection of the soldering point in the second direction Y, so that the wiring trough 4 can be located on the path where the other end of the wire extends freely along the second direction Y, so that the other end enters the inlet 42 in a straight line. This allows the wire to be laid in a straight line without redundant bends when entering the wiring trough 4, eliminating problems such as stress concentration, fatigue damage or decreased connection reliability caused by the wire being forced to bend at the entrance, optimizing the stability of current flow in the wire, and thus improving the reliability of the monitoring function of the auxiliary switch 100.

[0075] In some embodiments, such as Figure 2 and Figure 4 As shown, the wiring trough 4 includes a first section 43 and a second section 44. One end of the first section 43 is connected to the inlet 42. The second section 44 is connected to the other end of the first section 43 and is perpendicular to the first section 43. There is a first distance between the other end of the first section 43 and the solder joint. The first distance is greater than or equal to the wire diameter.

[0076] The first segment 43 is one of the linear segments constituting the wiring trough 4, and is the starting part of the overall wiring path of the conductor. Specifically, one end of the first segment 43 is directly connected to the inlet 42 for introducing the conductor, and is used to guide and accommodate the first straight path of the conductor after it enters from the inlet 42.

[0077] The second segment 44 is another linear segment constituting the wiring groove 4, which together with the first segment 43 forms the wiring path of the conductor. Specifically, the second segment 44 is perpendicular to the first segment 43 and is used to change the direction of the conductor wiring to avoid the conductor occupying too much space in the second direction Y, thereby achieving an orderly and compact arrangement of the conductor in a limited space.

[0078] The other end of the first segment 43, that is, the end furthest from the inlet 42, has a first distance from the welding point of the conductor. The first distance is greater than or equal to the diameter of the conductor it accommodates, so that when the conductor bends from the first segment 43 to the second segment 44, there is sufficient space at the bend to avoid excessive mechanical stress on the conductor due to an excessively small bending radius, which could lead to breakage. This ensures the reliability of the conductor connection and its long service life.

[0079] Furthermore, the second segment 44 can be a stepped segment composed of multiple mutually perpendicular paths connected together, in order to further reduce the space occupied by the conductor in the second direction Y, thereby providing sufficient installation space for the conductors of other columns of terminals 2 arranged along the second direction Y.

[0080] It should be noted that this application does not impose specific limitations on the number of mutually perpendicular paths in the second segment 44 or their specific arrangement. Those skilled in the art can design them according to actual needs.

[0081] According to the description of the above embodiment, the first section 43 of the wiring groove 4 is used to guide and accommodate the wires into the wiring groove 4. The second section 44, perpendicular to the first section 43, can be used to change the wiring direction of the wires so that the wires are arranged compactly and orderly on the mounting surface 311. The first distance between the other end of the wiring groove 4 connected to the second section 44 and the solder point is greater than or equal to the wire diameter, so that there is sufficient space at the connection between the first section 43 and the second section 44 for the wires to bend. This avoids the wires from breaking due to excessive mechanical stress at the bend point caused by insufficient bending radius, thereby allowing the current in the wires to flow normally, and thus improving the reliability of the monitoring function of the auxiliary switch 100.

[0082] In some embodiments, such as Figure 2 and Figure 4As shown, the connector 33 includes two pressure plates 332. The space between the two pressure plates 332 forms a connector groove 331. An arc-shaped structural block is provided on the side of the pressure plate 332 facing the connector groove 331. The minimum distance between the two arc-shaped structural blocks is less than the dimension of the terminal 2 in the third direction Z. Herein, the third direction Z is the arrangement direction of the two pressure plates 332, and the third direction Z is perpendicular to the first direction X.

[0083] The clamping plate 332 is an elastic clamping component constituting the connector 33. Specifically, the connector 33 includes two clamping plates 332 arranged opposite each other in the third direction Z. The gap formed between the two clamping plates 332 together constitutes the insertion groove 331 for inserting the terminal 2.

[0084] The clamping plate 332 has good elasticity and conductivity, enabling it to undergo recoverable elastic deformation under external force, such as the insertion of the terminal 2. Through its own elastic restoring force, the clamping plate 332 can continuously and tightly clamp the inserted terminal 2 from both sides of the third direction (Z), thereby establishing a stable, low-resistance electrical connection and providing sufficient mechanical holding force to prevent the terminal 2 from loosening.

[0085] The arc-shaped structural block is a raised structure with a specific geometric shape formed on the working surface of the pressure plate 332. Specifically, the working surface of the pressure plate 332 refers to the surface of the pressure plate 332 used to clamp the terminal 2, that is, as shown in the image. Figure 1 The side of the pressure plate 332 shown faces the insertion groove 331.

[0086] The arc-shaped structural block is set on the inner surface of the pressure plate 332 facing the insertion slot 331, so that the working surface of the pressure plate 332 presents a raised arc-shaped profile. Moreover, the minimum distance between the arc-shaped structural blocks on the two pressure plates 332 in the third direction Z is designed to be smaller than the outer dimensions of the terminal 2 in the corresponding third direction Z, thereby forming an interference fit between the arc-shaped structural block and the terminal 2.

[0087] Specifically, when terminal 2 is inserted into the socket 331, terminal 2 must expand the two arc-shaped structural blocks, causing the pressure plate 332 to undergo elastic deformation. When the arc-shaped structural blocks abut against terminal 2, the socket 331 and terminal 2 are connected at a point-to-surface level, thereby increasing the local pressure at the contact point between the socket 331 and terminal 2, enhancing the clamping tightness and vibration resistance, and thus achieving a more reliable electrical connection.

[0088] It should be noted that the tablet 332 and the arc-shaped structural block can be an integral structure, or the tablet 332 and the arc-shaped structural block can be detachably connected.

[0089] According to the description of the above embodiments, when the connector 33 is inserted into the connector slot 331, the pressure plate 332 abuts against the connector 33 along the third direction Z to prevent the connector 33 from moving in the third direction Z, thereby ensuring the stability of the connection. Furthermore, the minimum distance between the arc-shaped structural blocks provided on the two pressure plates 332 is less than the dimension of the terminal 2 in the third direction Z, so that the connector slot 331 and the terminal 2 are interference-fitted. This allows the connector slot 331 to clamp the terminal 2, and the arc-shaped structural blocks to provide a larger local clamping force to the terminal 2, improving the stability of the connection between the terminal 2 and the connector 33, thereby improving the reliability of the electrical connection between the terminal 2 and the external power supply.

[0090] In some embodiments, such as Figure 2 As shown, a first limiting structure 5 is provided on the mounting surface 311. The first limiting structure 5 abuts against the connector 33 to prevent the connector 33 from moving on the mounting surface 311. A first pressing block is provided on the upper cover 32. When the upper cover 32 is fastened onto the opening 312, the first pressing block presses the connector 33 along the first direction X.

[0091] The first limiting structure 5 is a positioning feature provided on the mounting surface 311 of the lower cover 31, used to restrict the degree of freedom of the plug 33 in the plane of the mounting surface 311. Specifically, the first limiting structure 5 can abut against one or more outer surfaces of the plug 33. Through this geometric interference, the plug 33 is effectively prevented from sliding or rotating on the mounting surface 311.

[0092] The first pressing block is a pressing feature protruding from the inner surface of the upper cover 32. After the upper cover 32 is assembled, the first pressing block can apply a stable pressing force to the connector 33 from above. Specifically, when the upper cover 32 is fastened onto the opening 312 of the lower cover 31 along the first direction X, the first pressing block moves downward accordingly. During or after the fastening process, the first pressing block directly or indirectly abuts against the top surface of the connector 33 and applies a downward pressing force to the connector 33 along the first direction X. This pressure ensures that the connector 33 fits tightly against the mounting surface 311, preventing it from warping or loosening under vibration or impact.

[0093] It should be noted that the specific shape and quantity of the first limiting structure 5 need to be further designed by those skilled in the art based on the specific structure of the connector 33, and this application does not make specific limitations in this regard.

[0094] According to the description of the above embodiment, the first limiting structure 5 abuts against the plug-in 33 to achieve initial limiting of the plug-in 33 on the plane where the mounting surface 311 is located. The first pressing block presses the plug-in 33 to achieve limiting of the plug-in 33 in the first direction X. Since the plane where the mounting surface 311 is located is perpendicular to the first direction X, the first limiting structure 5 and the first pressing block work together on the plug-in 33 to form a complete constraint on the plug-in 33 in six degrees of freedom in space, so that the plug-in 33 is stably and reliably installed in the receiving cavity, thereby ensuring the stability of the connection between the plug-in 33 and the terminal 2, and thus improving the reliability of the electrical connection between the terminal 2 and the external power supply.

[0095] In some embodiments, such as Figure 5 As shown, a second pressing block 6 is provided on the upper cover 32. When the upper cover 32 is fastened onto the opening 312, the second pressing block 6 presses the wire along the first direction X.

[0096] The second clamping block 6 is a dedicated clamping feature protruding from the inner surface of the upper cover 32. After the upper cover 32 is assembled, it is used to apply a stable binding force to the wires already laid in the wiring groove 4. Specifically, the second clamping block 6 is fixedly disposed on the inner surface of the upper cover 32. When the upper cover 32 is fastened to the opening 312 of the lower cover 31 along the first direction X, the second clamping block 6 moves together with the upper cover 32, and finally its end contacts the top of the wire.

[0097] In some specific embodiments, the position of the second pressing block 6 on the upper cover 32 can correspond to the position of the wiring groove 4. When the upper cover 32 is fastened to the opening 312 of the lower cover 31 along the first direction X, the second pressing block 6 enters the wiring groove 4 and presses against the top of the wire.

[0098] According to the description of the above embodiment, when the upper cover 32 is fastened to the opening 312 of the lower cover 31 along the first direction X, the second pressing block 6 applies a vertically downward pressing force to the wire along the first direction X. Additionally, the partition 41 of the wiring groove 4 provides a horizontal limit for the wire, preventing lateral movement. The synergistic effect of the second pressing block 6 and the partition 41 ensures that the wire maintains its preset wiring shape and position even under complex operating conditions, thereby improving the long-term reliability of the electrical connection in the auxiliary switch 100 and avoiding the risk of interference or short circuits to other components due to wire displacement.

[0099] In some embodiments, such as Figures 1-2 As shown, a circuit board 7 is mounted on the mounting surface 311. The circuit board 7 is electrically connected to the connector 33. A display element is mounted on the circuit board 7. A first viewing window 321 is provided on the top cover 32. When the top cover 32 is fastened onto the opening 312, the projection of the first viewing window 321 in the first direction X covers the projection of the display element in the first direction X.

[0100] The circuit board 7 is a circuit carrier fixedly mounted on the mounting surface 311 of the lower cover 31, used to integrate electronic components and realize specific electrical signal processing and transmission. Specifically, an electrical connection is established between the circuit board 7 and the connector 33, so that electrical signals introduced from the outside by the connector 33 and the terminal 2 can be transmitted to the circuit board 7 for processing, or conversely, signals generated by the circuit board 7 can be transmitted outward through this path.

[0101] The display element, mounted on circuit board 7, is a visual indicator used to convert electrical signals into visible light or graphic information to provide operational status indication. Specifically, the display element can be a light-emitting diode, a digital tube, or an indicator light, etc. It visually reflects the on / off status of the circuit in the circuit breaker, fault information, or other preset operational states by emitting light, displaying specific characters, or changing colors.

[0102] The first viewing window 321 is a specific light-transmitting area on the upper cover 32, used to observe the status information provided by the display. Specifically, the first viewing window 321 can be a through hole on the upper cover 32 or an area covered by a transparent / semi-transparent material. When the upper cover 32 is fastened to the opening 312 of the lower cover 31, the vertical projection of the first viewing window 321 in the first direction X can completely cover the vertical projection of the display in the first direction X, ensuring that when observed from the outside through the first viewing window 321, the line of sight is not obstructed by the physical structure of the upper cover 32, thereby enabling unobstructed observation of the visual signals emitted by the display and realizing external visualization of the status information.

[0103] In one specific implementation, the display element is an indicator light mounted on the circuit board 7. When a display module, i.e., the circuit board 7 with the indicator light, is connected to the circuit used to display the disconnection status, the operator can see through the first viewing window 321 that the indicator light is lit, indicating that the current in the circuit breaker is currently disconnected.

[0104] In another specific embodiment, the display element is an indicator light mounted on the circuit board 7. When a display module, that is, the circuit board 7 with the indicator light, is connected to the circuit used to indicate the continuity status, the operator can see through the first viewing window 321 that the indicator light is lit, indicating that the current in the circuit breaker is flowing at this time.

[0105] According to the description of the above embodiment, the circuit board 7 with the indicator is electrically connected to the connector 33 so that the indicator reflects the on / off status of the circuit in the circuit breaker by displaying different visual information. The operator can judge the on / off status of the circuit in the circuit breaker by seeing the visual information of the indicator in the first viewing window 321, realizing the external visualization of the status information and also demonstrating the monitoring function of the additional switch.

[0106] In some embodiments, such as Figure 2 As shown, a second limiting structure 8 is provided on the mounting surface 311. The second limiting structure 8 abuts against the circuit board 7 to prevent the circuit board 7 from moving on the mounting surface 311. A third pressing block is provided on the upper cover 32. When the upper cover 32 is fastened onto the opening 312, the third pressing block presses the circuit board 7 along the first direction X.

[0107] The third pressure block is a pressing feature protruding from the inner surface of the upper cover 32. After the upper cover 32 is assembled, the third pressure block can apply a stable pressing force to the circuit board 7 from above. Specifically, when the upper cover 32 is fastened to the opening 312 of the lower cover 31 along the first direction X, the third pressure block moves downward accordingly. During or after the fastening process, the third pressure block directly or indirectly abuts against the top surface of the circuit board 7 and applies a downward pressing force to the circuit board 7 along the first direction X. This pressure ensures that the circuit board 7 is tightly attached to the mounting surface 311, preventing it from warping or loosening under vibration or impact.

[0108] It should be noted that the specific shape and quantity of the second limiting structure 8 need to be further designed by those skilled in the art based on the specific structure of the circuit board 7, and this application does not make specific limitations in this regard.

[0109] According to the description of the above embodiment, the second limiting structure 8 abuts against the circuit board 7 to achieve initial limiting of the circuit board 7 on the plane where the mounting surface 311 is located. The third pressing block presses the circuit board 7 to achieve limiting of the circuit board 7 in the first direction X. Since the plane where the mounting surface 311 is located is perpendicular to the first direction X, the second limiting structure 8 and the third pressing block work together on the circuit board 7 to form a complete constraint on the circuit board 7 in six degrees of freedom in space, so that the circuit board 7 is stably and reliably installed in the receiving cavity, thereby ensuring the stability of the connection between the circuit board 7 and the connector 33, ensuring that the display on the circuit board 7 can normally display the on / off status of the current in the auxiliary switch 100 or circuit breaker, and thus improving the reliability of the auxiliary switch monitoring function.

[0110] Secondly, this application provides a circuit breaker, including a body, a cover, and an auxiliary switch as described in any of the above embodiments. The base of the auxiliary switch is connected to the body. The cover covers the body and the auxiliary switch. The upper cover of the auxiliary switch faces the cover. A second viewing window is provided on the cover, and the upper cover has a first viewing window. The projection of the second viewing window onto the upper cover covers the first viewing window.

[0111] Similarly, according to the description of the above embodiments, a second viewing window is provided on the cover, and the projection of the second viewing window on the upper cover covers the first viewing window, so that the operator can see the first viewing window in the second viewing window from outside the circuit breaker, and judge the on / off status of the circuit in the circuit breaker by seeing the visual information of the indicator through the first viewing window, so as to realize the monitoring function of the auxiliary switch.

[0112] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0113] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An auxiliary switch applied to a circuit breaker, characterized by, The utility model relates to a circuit breaker, including: a base, a terminal and a power module; the first surface of the base is connected to the circuit breaker; the terminal is connected to the second surface of the base; the first surface and the second surface are two surfaces of the base which are oppositely arranged in the first direction; the power module includes a lower cover, an upper cover, a plug and a wire; the first side of the lower cover is connected to the second surface in the first direction; the second side of the lower cover has a receiving cavity; the first side and the second side are two sides of the lower cover which are oppositely arranged in the first direction; the receiving cavity includes a mounting surface and an opening which are oppositely arranged in the first direction, and the plane where the mounting surface and the opening are located is perpendicular to the first direction; the plug is located in the receiving cavity and is connected to the mounting surface, and the plug has a plug slot; the terminal passes through the mounting surface into the receiving cavity and is inserted into the plug slot; the wire is connected to the plug, and the wire extends on the mounting surface; the upper cover is buckled on the opening in the first direction.

2. The auxiliary switch according to claim 1, characterized in that, A plurality of terminals are arranged in an array on the base; each terminal corresponds to a plug and a wire; a plurality of wiring grooves are arranged on the mounting surface, and each wiring groove corresponds to a wire; the wiring groove is a space formed between two partitions, and the partitions are connected to the mounting surface; when the wire is arranged in the wiring groove, the two partitions are located on the opposite sides of the wire, respectively; the size of the partition in the first direction is greater than the wire diameter.

3. The auxiliary switch according to claim 2, characterized in that, One side of the plug in the second direction is provided with a welding point; the second direction is perpendicular to the first direction; one end of the wire is welded to the welding point; the wiring groove includes a wire inlet, and the other end of the wire enters the wiring groove through the wire inlet; the projection of the wire inlet in the second direction overlaps the projection of the welding point in the second direction, so that the other end of the wire enters the wire inlet straight.

4. The auxiliary switch according to claim 3, characterized in that, The wiring groove includes a first section and a second section; one end of the first section is connected to the wire inlet; the second section is connected to the other end of the first section, and the second section is perpendicular to the first section; there is a first distance between the other end of the first section and the welding point; the first distance is greater than or equal to the wire diameter.

5. The auxiliary switch according to any one of claims 1 to 4, characterized in that, The plug includes two pressing pieces; the space between the two pressing pieces constitutes the plug slot; one side of the pressing piece facing the plug slot is provided with an arc structure block; the minimum distance between the two arc structure blocks is less than the size of the terminal in the third direction; the third direction is the arrangement direction of the two pressing pieces, and the third direction is perpendicular to the first direction.

6. The auxiliary switch according to any one of claims 1 to 4, characterized in that The mounting surface is provided with a first limiting structure; the first limiting structure abuts against the plug to prevent the plug from moving on the mounting surface; the upper cover is provided with a first pressing block; when the upper cover is buckled on the opening, the first pressing block presses the plug in the first direction.

7. The auxiliary switch according to any one of claims 2 to 4, characterized in that, A second pressing block is arranged on the upper cover; When the upper cover is buckled on the opening, the second pressing block presses the wire in the first direction.

8. The auxiliary switch according to any one of claims 1 to 4, characterized in that, A circuit board is arranged on the mounting surface; The circuit board is electrically connected with the plug-in piece; A display piece is arranged on the circuit board; A first visual window is arranged on the upper cover; When the upper cover is buckled on the opening, the projection of the first visual window in the first direction covers the projection of the display piece in the first direction.

9. The auxiliary switch according to claim 8, characterized in that, A second limiting structure is arranged on the mounting surface; The second limiting structure is in abutment with the circuit board, and is used for preventing the circuit board from moving on the mounting surface; A third pressing block is arranged on the upper cover; When the upper cover is buckled on the opening, the third pressing block presses the circuit board in the first direction.

10. A circuit breaker characterized by, The auxiliary switch comprises a body, a cover and the auxiliary switch according to any one of claims 1-9; The base of the auxiliary switch is connected on the body; The cover covers the body and the auxiliary switch; The upper cover of the auxiliary switch faces the cover; A second visual window is arranged on the cover, and the upper cover has a first visual window; The projection of the second visual window on the upper cover covers the first visual window.

Images