Wire terminal and circuit breaker

Abstract

This application discloses a terminal block and a circuit breaker, relating to the field of circuit breaker technology. The terminal block includes a terminal frame and a terminal plate. The terminal frame includes an integrally formed base plate, side plate, and top plate. The top plate has threaded holes and is equipped with clamping screws. The terminal plate is inserted into the terminal frame and is arranged parallel to the base plate. The base plate has a plurality of first protrusions on the side facing the terminal plate, and the terminal plate has a plurality of second protrusions on the side facing the base plate. The first protrusions and second protrusions cooperate to clamp wires. The base plate and / or the side plate have at least one first hole, and the terminal plate has at least one second hole, with the second holes and second protrusions spaced apart. The terminal block and circuit breaker provided by this application can effectively improve heat dissipation performance, thereby avoiding wire loosening due to excessive temperature rise and improving the long-term safety and current-carrying stability of the circuit breaker.

Description

Technical Field

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

[0002] Household miniature circuit breakers are important electrical protection devices for ensuring the safety of electrical equipment and people, and they must have both overload and short-circuit protection functions. With the continuous increase in the number of household appliances and their power consumption, the wiring stability and continuous load-bearing capacity of the circuit breaker terminals face higher requirements.

[0003] In existing technologies, terminal block design primarily focuses on mechanical clamping, lacking a targeted solution for the issue of wire overheating. Under high load conditions, the temperature rise at the contact area between the wire and the terminal block exacerbates the deformation of the metal material, reduces the clamping force, and with prolonged use, the wire may loosen due to thermal expansion, leading to a decrease in wiring capacity and threatening electrical safety.

[0004] Therefore, there is an urgent need for a terminal block that can effectively improve heat dissipation while ensuring reliable wire clamping, thereby preventing wire loosening due to excessive temperature rise and improving the long-term safety and current-carrying stability of the circuit breaker. Utility Model Content

[0005] The purpose of this application is to provide a terminal block and circuit breaker that can effectively improve heat dissipation performance, thereby avoiding wire loosening due to excessive temperature rise and improving the long-term safety and current carrying stability of the circuit breaker.

[0006] In a first aspect, a terminal block includes a terminal frame and a terminal block. The terminal frame includes an integrally formed base plate, side plates, and top plate. The top plate has threaded holes and is equipped with clamping screws. The terminal block is inserted into the terminal frame and is arranged parallel to the base plate. The base plate has a plurality of first bosses on the side facing the terminal block, and the terminal block has a plurality of second bosses on the side facing the base plate. The first bosses and second bosses cooperate to clamp wires. The base plate and / or side plates have at least one first hole, and the terminal block has at least one second hole, with the second holes and second bosses spaced apart.

[0007] By setting corresponding first and second protrusions on the base plate and terminal block, the conductors can be stably clamped while allowing for airflow to reduce temperature rise at the connection point. Simultaneously, the first and second holes increase airflow channels on the terminal block and frame, aiding ventilation and heat dissipation, further reducing temperature rise within the terminal block. This decreases the likelihood of conductors detaching from the terminal block and terminal block due to excessive temperature rise, improving the long-term safety and current-carrying stability of the circuit breaker.

[0008] In some examples, the two opposite side plates of the wiring frame are provided with a first hole, and the opposite sides of the wiring plate are provided with a limiting boss, which is inserted into the first hole and slides in cooperation with the first hole.

[0009] The symmetrically arranged first hole and limiting boss together form a dual guiding system, ensuring that the terminal block maintains parallel movement with the base plate during clamping, avoiding skewing or jamming. Furthermore, the first hole not only serves as a heat dissipation channel but also functions as a guide. This multi-functional integrated design simplifies the structure, improves overall reliability, and facilitates accurate and stable clamping of wires.

[0010] In some examples, the first hole on the side plate is configured as an elongated hole, the length of which is perpendicular to the base plate. When the clamping screw is tightened, the terminal block and the base plate can move closer to each other along the length of the first hole with the cooperation of the limiting boss and the first hole.

[0011] The first hole on the side plate is configured as an elongated hole, with its length perpendicular to the plane of the base plate. This structural design allows the terminal block to smoothly approach the base plate along the extension direction of the elongated hole when the operator tightens the clamping screw, achieving a precise clamping action.

[0012] In some examples, multiple first protrusions are divided into multiple first protrusion groups, each first protrusion group being arranged in parallel at intervals; multiple second protrusions are divided into multiple second protrusion groups, each second protrusion group being arranged in parallel at intervals, and the number of second protrusion groups is less than the number of first protrusion groups, the position of the second protrusion group corresponding to the gap between two adjacent first protrusion groups.

[0013] The staggered array of bosses creates more effective contact points within a limited contact area, significantly improving the contact reliability of the conductors. Furthermore, this layout ensures uniform pressure distribution on the conductor surface, avoiding localized stress concentrations common in traditional designs and effectively preventing conductor deformation and damage. Simultaneously, the parallel spacing provides excellent airflow channels for heat dissipation, helping to reduce operating temperature. This staggered design significantly enhances the current-carrying capacity and long-term stability of the terminals without increasing the overall structural dimensions.

[0014] In some examples, the second hole is configured as an elongated hole, with the length direction of the second hole being the same as the wiring direction of the wiring frame, and the second hole is set parallel and spaced apart from the second boss group.

[0015] Designing the second hole as an elongated slot offers several advantages: First, its extension direction aligns with the wiring direction, ensuring structural strength while forming a continuous heat dissipation channel. Second, the parallel and spaced arrangement of the elongated slot and the second protrusion group ensures that the heat dissipation channel covers the contact area requiring the most heat dissipation, significantly improving heat dissipation efficiency. In practical applications, this structure is particularly suitable for high-current operating conditions, effectively controlling temperature rise and improving the long-term operational stability of the terminals.

[0016] In some examples, the first hole on the base plate is configured as an elongated hole with its length direction being the same as the wiring direction of the wiring frame, and the first hole on the base plate is set parallel to and spaced apart from the first boss group.

[0017] Both the first hole on the base plate and the second hole on the terminal block are elongated holes, extending in the direction of wiring, and have the same technical effect, which will not be elaborated further here. It should be noted that the first hole on the base plate can be combined with the second hole to form a heat dissipation channel that runs through the space between the base plate and the terminal block, facilitating rapid air circulation to reduce temperature rise.

[0018] In some examples, both the first boss and the second boss are configured as hemispherical bosses, and the top surface of the hemispherical boss is a plane.

[0019] The design of the hemispherical boss utilizes its smooth surface to facilitate the insertion of wires into the space between the terminal block and the base plate. Furthermore, after the base plate and terminal block clamp the wires, the hemispherical boss can fully compress and secure the wires through its large contact area, reducing the possibility of the wires coming loose.

[0020] In some examples, the cross-section of the limiting boss is triangular or trapezoidal, and the shape of the first hole matches the shape of the limiting boss.

[0021] The locating boss has a triangular or trapezoidal cross-sectional shape, while the first hole on the side plate is machined into a guide hole that precisely matches the shape of the locating boss. This mating design achieves precise guiding functionality through geometric constraints.

[0022] In some examples, the sides of the second hole are chamfered.

[0023] The chamfered structure effectively avoids sharp burrs generated during stamping, which not only improves production efficiency but also ensures the smoothness of the hole edges. Secondly, the chamfered opening forms a smooth transition guide surface, which significantly improves airflow characteristics, allowing the heat dissipation airflow to pass through the second hole more smoothly and improving heat dissipation efficiency.

[0024] Secondly, embodiments of this application also provide a circuit breaker, including a conductive component and the aforementioned wiring terminals, wherein the wiring terminals are electrically connected to the conductive component.

[0025] The beneficial effects of the circuit breakers provided in the second aspect and the various possible designs of the second aspect can be found in 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 embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A first view of the wiring terminals provided in an embodiment of this application.

[0028] Figure 2 A second view of the wiring terminals provided in an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the structure of the wiring terminal provided in the embodiment of this application after it has been adjusted and tightened.

[0030] Figure 4 This is a schematic diagram illustrating the mating relationship between the first boss and the second boss provided in an embodiment of this application.

[0031] Figure 5 This is a schematic diagram of the structure of the terminal block provided in an embodiment of this application.

[0032] Figure 6 This is a schematic diagram of a structure with a first hole on the base plate provided in an embodiment of this application.

[0033] Explanation of reference numerals in the attached drawings: 100, terminal block; 1, wiring frame; 11, base plate; 111, first boss; 12, side plate; 121, first hole; 13, top plate; 131, threaded hole; 132, clamping screw; 2, wiring plate; 21, second boss; 22, second hole; 221, chamfer; 23, limiting boss; X, wiring direction. Detailed Implementation

[0034] 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, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0040] This application provides a circuit breaker, including a conductive component and a terminal block, wherein the terminal block is electrically connected to the conductive component.

[0041] As the main switch that controls the opening and closing of a circuit, the circuit breaker has terminals that are important components for connecting the circuit breaker to the circuit. A circuit breaker usually includes at least two terminals, one of which is connected to the live wire and the other to the neutral wire. Both terminals are stably connected so that the circuit breaker can accurately control the opening and closing of the circuit.

[0042] Terminal blocks typically include a junction box and a terminal block. One end of the terminal block mates with the junction box to connect wires, while the other end of the terminal block is electrically connected to the conductive components in the circuit breaker, so that the current from the wires can be led to the internal circuit of the circuit breaker through the terminal block.

[0043] The wiring terminals provided in this application can improve the stability of the connecting wires, reduce the possibility of the wires coming loose from the wiring terminals, and at the same time improve the heat dissipation efficiency at the connection point with the wires, reduce the temperature rise on the wiring terminals under high load conditions, further reduce the possibility of wires coming loose due to high temperature deformation, and effectively improve the reliability of the circuit breaker.

[0044] The specific structure of the terminal block provided in this application will be described in detail below with reference to the accompanying drawings.

[0045] Please refer to Figures 1 to 3 This embodiment provides a terminal block 100, including a terminal frame 1 and a terminal block 2. The terminal frame 1 includes an integrally formed base plate 11, side plate 12, and top plate 13. The top plate 13 has threaded holes 131 and is equipped with clamping screws 132. The terminal block 2 is inserted into the terminal frame 1 and is arranged parallel to the base plate 11. The base plate 11 has a plurality of first protrusions 111 on the side facing the terminal block 2, and the terminal block 2 has a plurality of second protrusions 21 on the side facing the base plate 11. The first protrusions 111 and the second protrusions 21 cooperate to clamp wires. The base plate 11 and / or the side plate 12 have at least one first hole 121, and the terminal block 2 has at least one second hole 22, with the second holes 22 and the second protrusions 21 spaced apart.

[0046] By providing corresponding first protrusion 111 and second protrusion 21 on the base plate 11 and terminal block 2, a partial gap can be left between the base plate 11 and terminal block 2 to allow air circulation and reduce the temperature rise at the connection point, while ensuring stable clamping of the wire. Simultaneously, the opening of the first hole 121 and second hole 22 increases airflow channels on the terminal block 2 and terminal frame 1, aiding ventilation and heat dissipation, further reducing the temperature rise in the terminal frame 1. This reduces the possibility of the wire detaching from the terminal frame 1 and terminal block 2 due to excessive temperature rise, improving the long-term safety and current-carrying stability of the circuit breaker.

[0047] Reference Figures 1 to 3 The junction box 1 is manufactured using a one-piece molding process. The base plate 11, side plates 12, and top plate 13 of the junction box 1 are all formed by bending a single piece of sheet material. The junction box 1 has a frame-like structure with openings on opposite sides. The base plate 11 and top plate 13 are opposite each other, and the two side plates 12 are opposite each other, forming a rectangular frame with the base plate 11 and top plate 13. This one-piece molding design gives the junction box 1 high structural strength and stability.

[0048] The top plate 13 is provided with a threaded hole 131, the axis of which is perpendicular to the top plate 13 and the bottom plate 11. A clamping screw 132 is threaded into the threaded hole 131. During wiring, the relative position of the terminal block 2 and the terminal frame 1 can be adjusted by adjusting the clamping screw 132 to clamp the wire between the terminal block 2 and the terminal frame 1.

[0049] The terminal block 2 is inserted into the terminal frame 1 and is parallel to the base plate 11 of the terminal frame 1, thus forming a space between the terminal block 2 and the base plate 11 for clamping the wires. During the wiring process, the terminal block 2 and the base plate 11 can be brought closer together by adjusting the clamping screw 132 to clamp the wires.

[0050] It should be noted that in common circuit breakers, one of the wiring frame 1 and the terminal block 2 is fixed, while the other is movable and can move with the action of the clamping screw 132. In this embodiment, the terminal block 2 is fixed, and the wiring frame 1 is movably installed inside the circuit breaker. When adjusting the clamping screw 132 to clamp the wire, the wiring frame 1 gradually moves closer to the terminal block 2, the distance between the base plate 11 and the terminal block 2 decreases, and finally the wire is clamped by the base plate 11 and the terminal block 2 to complete the wiring.

[0051] Reference Figures 1 to 3 On the side of the base plate 11 facing the terminal block 2, there are multiple first bosses 111, and on the side of the terminal block 2 facing the base plate 11, there are multiple second bosses 21. These first bosses 111 and second bosses 21 form a mutually cooperating clamping structure. This boss-to-boob design not only increases the contact area of ​​the wires but also creates multi-point pressure distribution, effectively avoiding the problems of local deformation and stress concentration of the wires.

[0052] The positional relationship between the multiple first protrusions 111 and the multiple second protrusions 21 can be one-to-one, meaning the top surface of each first protrusion 111 can abut against the top surface of the corresponding second protrusion 21. Alternatively, they can be staggered, meaning each first protrusion 111 is offset from its corresponding second protrusion 21. Both forms can provide a more uniform conductor clamping force, effectively improving contact reliability and current carrying capacity.

[0053] In addition, the first hole 121 and the second hole 22 can both be used as heat dissipation channels. The first hole 121 on the base plate 11 directly connects the space between the base plate 11 and the terminal block 2. The first hole 121 and the first protrusion 111 are spaced apart. Without affecting the structural strength, it is conducive to the air circulation in the space to achieve the effect of cooling.

[0054] The first hole 121 on the side plate 12 and the second hole 22 on the terminal block 2 can serve the same function as described above. Furthermore, the multiple first holes 121 and multiple second holes 22 can form an effective air convection channel in the space, which can guide the heat to dissipate quickly, avoid excessive temperature or local thermal stress concentration, reduce the impact of high temperature on the structure of the terminal block 100, and thus improve the reliability of wiring.

[0055] The first hole 121 can be formed only on the base plate 11, corresponding to the second hole 22 on the terminal block 2 to form a convection channel. Alternatively, the first hole 121 can be formed on both the base plate 11 and the side plate 12, resulting in more heat dissipation channels and higher heat dissipation efficiency. The first hole 121 can also be formed only on the side plate 12, improving heat dissipation efficiency while maintaining structural stability of the base plate 11 and reducing the possibility of deformation of the terminal block 1 due to excessive clamping force.

[0056] The first hole 121 and the second hole 22 can be rectangular, circular, or polygonal, etc. The size of the first hole 121 on the base plate 11 is adapted to the size of the base plate 11, the size of the first hole 121 on the side plate 12 is adapted to the size of the side plate 12, and the size of the second hole 22 is adapted to the size of the terminal block 2. The shape and size of the first hole 121 and the second hole 22 are not further limited in this application.

[0057] The optimized heat dissipation layout effectively reduces operating temperature rise and extends the service life of the terminals by 100%, making it suitable for high-load, long-term electrical applications. The overall design ensures a compact structure while also facilitating installation and maintenance.

[0058] Reference Figures 1 to 3 In some examples, the two opposite side plates 12 in the wiring frame 1 are provided with a first hole 121, and the opposite sides of the wiring plate 2 are provided with a limiting boss 23. The limiting boss 23 is inserted into the first hole 121 and slides in cooperation with the first hole 121.

[0059] The symmetrically arranged first hole 121 and limiting boss 23 together form a dual guiding system, ensuring that the terminal block 2 always maintains parallel movement with the base plate 11 during the clamping process, avoiding skewing or jamming. Furthermore, the first hole 121 not only serves as a heat dissipation channel but also functions as a guide. This multi-functional integrated design simplifies the structure and improves overall reliability, facilitating accuracy and stability when clamping wires.

[0060] The two opposite side plates 12 of the wiring frame 1 are symmetrically provided with first holes 121, and the corresponding positions on both sides of the wiring plate 2 are provided with limiting bosses 23. This symmetrical design allows the limiting bosses 23 to form a stable sliding fit structure with the first holes 121. When the clamping screw 132 is adjusted, the limiting bosses 23 slide relative to the first holes 121. The uniform contact between the limiting bosses 23 on both sides and the wall of the first holes 121 can ensure the balance of forces, so that the wiring frame 1 and the wiring plate 2 slide smoothly relative to each other until the bottom plate 11 clamps the wires with the wiring plate 2.

[0061] Specifically, refer to Figures 1 to 3The first holes 121 on the two side plates 12 are aligned, and their diameter is slightly larger than the outer dimensions of the limiting boss 23. This ensures sufficient clearance for assembly while effectively limiting the lateral displacement of the terminal block 2. The end of the limiting boss 23 can be designed with a rounded transition to reduce sliding friction. In addition, the length direction of the first hole 121 is consistent with the pressing direction, and its length is determined according to the stroke requirements of the terminal block 2 to ensure good guiding effect throughout the entire pressing range.

[0062] In one embodiment, the first hole 121 on the side plate 12 is configured as an elongated hole, the length direction of which is perpendicular to the base plate 11. When the clamping screw 132 is tightened, the wiring plate 2 and the base plate 11 can move closer to each other along the length direction of the first hole 121 with the cooperation of the limiting boss 23 and the first hole 121.

[0063] The first hole 121 on the side plate 12 is configured as an elongated hole, and the length direction of the elongated hole is perpendicular to the plane of the base plate 11. This structural design allows the terminal block 2 to smoothly approach the base plate 11 along the extension direction of the elongated hole when the operator tightens the clamping screw 132, achieving a precise clamping action.

[0064] The elongated hole design provides precise track constraints for the relative movement of the terminal block 2 and the terminal frame 1, ensuring that the terminal block 2 and the base plate 11 remain parallel during the clamping process. Furthermore, the optimized guide structure effectively reduces movement resistance, making the clamping operation easier and smoother. Even after long-term use, the cooperation between the elongated hole and the limiting boss 23 maintains good guiding performance. The elongated hole design satisfies the guiding requirements while retaining sufficient material strength to ensure structural durability.

[0065] This symmetrical guide structure demonstrates significant advantages in practical applications: firstly, it improves assembly efficiency, eliminating the need for operators to pay special attention to the installation direction; secondly, it enhances long-term stability, maintaining precise guiding performance even after repeated disassembly and assembly. Simultaneously, the symmetrically arranged heat dissipation holes create a balanced heat dissipation channel, facilitating uniform heat dissipation and preventing localized overheating.

[0066] Reference Figures 1 to 4 In some examples, multiple first protrusions 111 are divided into multiple first protrusion groups, each first protrusion group is arranged in parallel and spaced apart, multiple second protrusions 21 are divided into multiple second protrusion groups, each second protrusion group is arranged in parallel and spaced apart, and the number of second protrusion groups is less than the number of first protrusion groups, and the position of the second protrusion group corresponds to the gap between two adjacent first protrusion groups.

[0067] The staggered array of bosses creates more effective contact points within a limited contact area, significantly improving the contact reliability of the conductors. Furthermore, this layout ensures uniform pressure distribution on the conductor surface, avoiding localized stress concentrations common in traditional designs and effectively preventing conductor deformation and damage. Simultaneously, the parallel spacing provides excellent airflow channels for heat dissipation, helping to reduce operating temperature. This staggered design significantly enhances the current-carrying capacity and long-term stability of the terminal block 100 without increasing the overall structural dimensions.

[0068] Specifically, refer to Figure 1 and Figure 2 Multiple first protrusions 111 are provided, and several first protrusions 111 form a group to form a first protrusion group. The number of first protrusion groups can be at least two, and adjacent first protrusion groups are arranged in parallel and spaced apart. Correspondingly, several of the multiple second protrusions 21 form a group to form a second protrusion group. The number of second protrusion groups can be at least one, and the number of second protrusion groups is always less than the number of first protrusion groups 111.

[0069] This allows the second boss group to be positioned precisely in the gap between two adjacent first boss groups. This unique layout enables the second boss group to be precisely embedded in the gap space of the first boss group when the terminal block 2 and the base plate 11 are closed, forming an interlocking clamping structure.

[0070] In another embodiment, the number of first boss groups can be less than the number of second boss groups, so that the first boss groups are located exactly in the gap region between two adjacent second boss groups. This design has the same effect as the aforementioned design and will not be described again here.

[0071] Reference Figures 1 to 4 In this embodiment, each first boss group includes six spaced-apart first bosses 111 arranged in a row. Similarly, each second boss group includes six spaced-apart second bosses 21 arranged in a row. When the terminal block 2 and the base plate 11 are close together, the second boss group can be precisely engaged between two adjacent first boss groups.

[0072] Reference Figure 2 and Figure 5 In some examples, the second hole 22 is configured as an elongated hole, the length direction of the second hole 22 is the same as the wiring direction X of the wiring frame 1, and the second hole 22 is set parallel to and spaced apart from the second boss group.

[0073] Designing the second hole 22 as an elongated hole offers several advantages: First, its extension direction aligns with the wiring direction X, ensuring structural strength while forming a continuous heat dissipation channel. Second, the parallel and spaced arrangement of the elongated hole and the second boss group ensures that the heat dissipation channel covers the contact area requiring the most heat dissipation, significantly improving heat dissipation efficiency. In practical applications, this structure is particularly suitable for high-current operating conditions, effectively controlling temperature rise and improving the long-term operational stability of the terminal block 100.

[0074] Specifically, refer to Figure 5 The second hole 22 and the second boss group are arranged parallel to each other on the terminal block 2, and the design direction of the second hole 22 and the second boss group is the same as the wiring direction X of the terminal block 2. The second hole 22 is located in the gap between two adjacent second boss groups, which can effectively utilize the space on the terminal block 2, improve the reliability of wiring and the heat dissipation efficiency, and has high practicality.

[0075] Reference Figure 6 In some examples, the first hole 121 provided on the base plate 11 is configured as an elongated hole and the length direction of the elongated hole is the same as the wiring direction X of the wiring frame 1. The first hole 121 on the base plate 11 is arranged parallel to and spaced apart from the first boss group.

[0076] Both the first hole 121 on the base plate 11 and the second hole 22 on the terminal block 2 are elongated holes, and their extension direction is the wiring direction X, achieving the same technical effect, which will not be elaborated further here. It should be noted that the first hole 121 on the base plate 11 can cooperate with the second hole 22 to form a heat dissipation channel penetrating the space between the base plate 11 and the terminal block 2, facilitating rapid air circulation to reduce temperature rise.

[0077] Specifically, refer to Figure 6 The first hole 121 on the base plate 11 is arranged parallel to and spaced apart from the first boss group, and the orientation of the first hole 121 and the first boss group is the same as the wiring direction X of the terminal block 100. The first hole 121 is located in the gap between two adjacent first boss groups, which can effectively utilize the space on the base plate 11, improving both the reliability of wiring and the heat dissipation efficiency, making it highly practical. Furthermore, when the base plate 11 and the terminal block 2 are close together, the first boss group corresponds to the second hole 22, and the second boss group corresponds to the first hole 121. The dimensions of the first hole 121 and the second hole 22 do not allow wires to pass through, thus achieving reliable wiring while improving heat dissipation capacity, which is beneficial for the normal use of the terminal block 100 under high loads.

[0078] Reference Figure 1 and Figure 2 In some examples, both the first boss 111 and the second boss 21 are configured as hemispherical bosses, and the top surface of the hemispherical boss is a plane.

[0079] The design of the hemispherical boss can utilize its smooth surface to facilitate the insertion of wires into the space between the terminal block 2 and the base plate 11. After the base plate 11 and the terminal block 2 clamp the wires, the hemispherical boss can fully compress and secure the wires through the large contact area, reducing the possibility of the wires coming loose.

[0080] Each hemispherical boss provides excellent structural support, ensuring that the base plate 11 and terminal block 2 do not deform during clamping. The top plane forms surface contact with the wire surface, significantly increasing the effective contact area compared to traditional pure hemispherical bosses. Secondly, the planar contact ensures a stable contact pressure distribution, avoiding localized overheating caused by point contact. Furthermore, this design maintains good contact performance even after long-term use, without reducing the contact area due to repeated clamping.

[0081] In an alternative embodiment, the first boss 111 and the second boss 21 can also be configured as trapezoidal bosses or rectangular bosses, etc., which can also achieve the technical effect of clamping the wire. This application does not make any further limitations.

[0082] Reference Figure 2 , Figure 3 and Figure 5 In some examples, the cross-section of the limiting boss 23 is triangular or trapezoidal, and the shape of the first hole 121 matches the shape of the limiting boss 23.

[0083] The limiting boss 23 has a triangular or trapezoidal cross-sectional shape, while the first hole 121 on the side plate 12 is machined into a guide hole that precisely matches the shape of the limiting boss 23. This mating design achieves precise guiding function through geometric constraints.

[0084] In this embodiment, the limiting boss 23 is configured as a triangular boss, and the first hole 121 on the side plate 12 is designed as a rectangular elongated hole. The use of a triangular limiting boss 23 facilitates quick assembly into the rectangular first hole 121, which is beneficial to improving assembly efficiency. The two side walls of the triangular limiting boss 23 abut against the side walls of the first hole 121, thereby achieving both limiting fit and sliding fit.

[0085] In an optional embodiment, the first hole 121 on the side plate 12 can be designed as a hole whose sidewall fits against the sidewall of the triangular limiting boss 23. This allows the inclined side of the triangular limiting boss 23 to maintain uniform contact with the inner wall surface of the first hole 121. This surface contact characteristic ensures precise control of the sliding motion trajectory. In particular, the trapezoidal design has a larger bearing area than the triangular design, while the triangular design provides more precise guiding accuracy.

[0086] In addition, the cross-sectional shape of the limiting boss 23 can also be designed as a cylindrical or rectangular shape, etc., and this application does not impose further limitations.

[0087] Reference Figure 5 In some examples, the sides of the second hole 22 are chamfered 221.

[0088] The chamfer 221 structure effectively avoids sharp burrs generated during stamping, which not only improves production efficiency but also ensures the smoothness of the hole edges. Secondly, the chamfered opening forms a smooth transition guide surface, which can significantly improve airflow characteristics, allowing the heat dissipation airflow to pass more smoothly through the second hole 22, thereby improving heat dissipation efficiency.

[0089] In particular, this chamfer 221 design can prevent stress concentration caused by sharp edges during long-term use, thus improving the fatigue resistance of the terminal block 2.

[0090] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wiring terminal characterized by comprising: include: The wiring frame includes an integrally formed base plate, side plate and top plate, wherein the top plate is provided with threaded holes and is equipped with clamping screws; A junction box is inserted into the junction box and is arranged parallel to the base plate; The base plate has a plurality of first protrusions on the side facing the terminal block, and the terminal block has a plurality of second protrusions on the side facing the base plate. The first protrusions and the second protrusions cooperate to clamp the wires. The base plate and / or the side plate are provided with at least one first hole, and the terminal block is provided with at least one second hole, the second hole being spaced apart from the second boss.

2. The terminal of claim 1, wherein The two opposite side plates of the wiring frame are each provided with the first hole, and the opposite sides of the wiring plate are provided with limiting bosses. The limiting bosses are inserted into the first hole and slide in cooperation with the first hole.

3. The terminal of claim 2 wherein, The first hole on the side plate is configured as an elongated hole, and the length direction of the elongated hole is perpendicular to the base plate. When the clamping screw is tightened, the wiring plate and the base plate can move closer to each other along the length direction of the first hole with the cooperation of the limiting boss and the first hole.

4. The terminal of any one of claims 1-3, wherein: The plurality of first protrusions are divided into a plurality of first protrusion groups, each of the first protrusion groups being arranged in parallel at intervals; the plurality of second protrusions are divided into a plurality of second protrusion groups, each of the second protrusion groups being arranged in parallel at intervals, and the number of second protrusion groups is less than the number of first protrusion groups, the position of the second protrusion group corresponding to the gap between two adjacent first protrusion groups.

5. The terminal of claim 4 wherein, The second hole is configured as an elongated hole, and the length direction of the second hole is the same as the wiring direction of the wiring frame. The second hole and the second boss group are arranged parallel to each other at intervals.

6. The terminal of claim 4 wherein: The first hole on the base plate is configured as an elongated hole with its length direction being the same as the wiring direction of the wiring frame. The first hole on the base plate is arranged parallel to and spaced apart from the first boss group.

7. The terminal of any one of claims 1-3, wherein: Both the first boss and the second boss are configured as hemispherical bosses, and the top surface of the hemispherical boss is a plane.

8. The terminal of claims 2 or 3, wherein, The cross-section of the limiting boss is triangular or trapezoidal, and the shape of the first hole matches the shape of the limiting boss.

9. The terminal of any one of claims 1-3, wherein: The sides of the second hole are all chamfered.

10. A circuit breaker characterized by, It includes a conductive component and a terminal block as described in any one of claims 1-9, wherein the terminal block is electrically connected to the conductive component.

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