Single-core connector and charging assembly

Abstract

This utility model discloses a single-core connector and charging assembly. It includes a plug assembly and a socket assembly. When the plug assembly and socket assembly are mated, the plug assembly rotates, causing the locking part to slide along a guide groove to the locking position, thus achieving mechanical locking between the plug assembly and the socket assembly. Simultaneously, the plug terminals and socket terminals complete electrical connection. This technical solution effectively avoids the loosening and detachment problems of traditional direct-plug connection structures during use, improving connection reliability. Furthermore, this structure simplifies operation steps, eliminating the need for additional locking components, reducing assembly difficulty and manufacturing costs. In addition, the mechanical rotation locking method provides clear insertion feedback, contributing to improved safety and ease of operation, making it suitable for electrical connection applications with high reliability requirements.

Description

Technical Field

[0001] This utility model relates to the field of charging technology, and in particular to a single-core connector and charging component. Background Technology

[0002] Single-core connectors are widely used in high-current transmission scenarios such as new energy vehicles, energy storage systems, and power equipment. Existing single-core connectors generally consist of a plug and a socket, achieving conductive connection through insertion and removal.

[0003] However, connectors in related technologies still have the following shortcomings in practical use: On the one hand, traditional structures mostly rely on linear mating and lack effective mechanical locking mechanisms, leading to the risk of loosening or poor contact under high vibration and high current conditions; on the other hand, although some connectors have locking structures, their structures are complex and cumbersome to operate, failing to balance ease of operation and connection stability. Furthermore, some existing products lack clear visual indicators, making it difficult to quickly identify whether the plug is locked, increasing operational risks and the possibility of misjudgment. Utility Model Content

[0004] The main objective of this invention is to provide a single-core connector and charging assembly to at least solve the technical problem of easy loosening of the plug-in and unplugging mechanism in related technologies.

[0005] To achieve the above objectives, a first aspect of this utility model provides a single-core connector, the single-core connector comprising a plug assembly and a socket assembly forming a detachable connection;

[0006] The plug assembly includes a plug housing and plug terminals built into the plug housing, and a locking portion is formed on the inner wall of the plug housing;

[0007] The socket assembly includes a socket housing and socket terminals built into the socket housing, wherein the outer wall of the socket housing is formed with a non-linear guide groove;

[0008] When the plug assembly mates with the socket assembly, the plug assembly rotates to allow the locking part to slide along the guide groove to the locking position, thereby achieving mechanical locking between the plug assembly and the socket assembly, while the plug terminals and the socket terminals are electrically connected.

[0009] A second aspect of this utility model provides a charging component, including a charging device and a single-core connector as described in the first aspect, wherein one end of the single-core connector is used for electrical connection with a power supply end, and the other end is used for electrical connection with the charging device.

[0010] This invention relates to a single-core connector and charging assembly. By providing a locking part on the inner wall of the plug housing and a non-linear guide groove on the outer wall of the socket housing, the plug assembly and socket assembly can be mechanically locked by rotation after mating. This effectively avoids the loosening and detachment problems of traditional direct-plug connection structures during use, improving connection reliability. At the same time, this structure simplifies the operation steps, eliminating the need for additional locking components and reducing assembly difficulty and manufacturing costs. Furthermore, the mechanical rotation locking method provides clear insertion feedback, which helps improve safety and ease of operation, making it suitable for electrical connection applications with high reliability requirements. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A three-dimensional schematic diagram of a single-core connector provided in an embodiment of this application;

[0013] Figure 2 This is a three-dimensional schematic diagram of the socket assembly in an embodiment of this application;

[0014] Figure 3 This is a three-dimensional schematic diagram of the plug assembly in an embodiment of this application;

[0015] Figure 4 for Figure 1 A 3D diagram showing the socket casing after removal;

[0016] Figure 5 for Figure 4 A 3D schematic diagram after the plug housing has been removed;

[0017] Figure 6 This is a schematic diagram showing the connection between the plug terminals and the socket terminals;

[0018] Figure 7 This is a half-sectional schematic diagram of a single-core connector provided in an embodiment of this application.

[0019] Reference numerals: Single-core connector 1, socket assembly 10, socket inner snap structure 101, socket terminal 102, 103, socket housing 104, guide slide 105, second rotation locking mark 106, socket slot 109, plug assembly 20, direction mark 201, plug inner snap structure 202, plug terminal 203, plug locking protrusion 204, plug housing 205, first rotation locking mark 206, crown spring structure 207, plug slot 209, locking part 1051, guide part 1052, locking part 2051. Detailed Implementation

[0020] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that related terms such as "first" and "second" can be used to describe various components, but these terms do not limit the component. These terms are only used to distinguish one component from another. For example, without departing from the scope of this utility model, the first component can be referred to as the second component, and the second component can similarly be referred to as the first component. The term "and / or" refers to any one or more combinations of related and descriptive terms.

[0022] Please see Figures 1 to 7 This application provides a single-core connector 1 for power supply connection in industries such as drones, mobility scooters, robots, power tools, garden machinery, and electric bicycles. It includes at least a plug assembly 20 and a socket assembly 10 that are detachably connected.

[0023] The following is a description of each component:

[0024] The socket assembly 10 is one of the main components, which includes at least a socket housing 104 and socket terminals 102 disposed inside the socket housing 104. A non-linear guide groove 105 is formed on the outer wall of the socket housing 104. The guide groove 105 may be in the form of an arc, a zigzag, or other non-linear structure, and is used to realize the locking and guiding function.

[0025] The plug assembly 20 is another major component, which includes at least a plug housing 205 and a plug terminal 203 built into the plug housing 205. The inner wall of the plug housing 205 is provided with a locking part 2051.

[0026] During assembly or use, the plug assembly 20 is aligned with the socket assembly 10 and inserted. After the plug assembly 20 is axially inserted into the socket assembly 10, a rotation operation causes the locking part 2051 on the plug housing 205 to slide along the guide groove 105. As the rotation angle reaches a preset angle, the locking part 2051 is guided to the locking position at the end of the guide groove 105, thereby achieving a stable mechanical lock between the plug assembly 20 and the socket assembly 10 and avoiding the risk of loosening. At the same time, the plug terminal 203 establishes an electrical connection with the socket terminal 102 during insertion. The entire locking operation requires no additional tools, has a compact structure, and is easy to operate.

[0027] As can be seen, the single-core connector of this application embodiment, by providing a locking part on the inner wall of the plug housing and a non-linear guide groove on the outer wall of the socket housing, enables the plug assembly and socket assembly to achieve mechanical locking through rotation after mating. This effectively avoids the loosening and detachment problems of traditional direct-plug connection structures during use, and improves connection reliability. At the same time, this structure simplifies the operation steps, eliminates the need for additional locking components, and reduces assembly difficulty and manufacturing costs. In addition, the locking method through mechanical rotation provides clear insertion feedback, which helps to improve safety and ease of operation, and is suitable for electrical connection applications with high reliability requirements.

[0028] It should be noted that both the socket terminal 102 and the plug terminal 203 are made of standard T2 cold-forged copper. T2 copper has excellent conductivity and machinability. It is a pure copper material with high conductivity and good flexibility, making it suitable for terminal structures in electrical connection applications where high contact resistance and mechanical strength are required. The cold-forging process can improve the dimensional accuracy and structural consistency of the terminals while maintaining the original electrical properties of the copper.

[0029] Terminals manufactured using standardized T2 cold-forged copper components not only ensure conductivity stability under high current transmission, but also improve finished product consistency, assembly efficiency, and long-term reliability in mass production, making them particularly suitable for 8AWG~10AWG cable connection requirements.

[0030] In an optional embodiment of this application, the guide chute 105 includes an inlet portion 1052 and a locking portion 1051 that are interconnected.

[0031] Specifically, the inlet portion 1052 is disposed at the open end of the guide groove 105, for guiding the locking portion 2051 on the plug assembly 20 to insert and slide along a preset rotation path. The inlet portion 1052 is preferably an inclined or curved groove section to match the rotational movement trajectory of the plug assembly.

[0032] The locking portion 105b is located at the end region of the guide groove 105, forming a closed or semi-closed limiting groove section. After the plug assembly 20 is inserted and rotated clockwise by a certain angle, the locking portion 2051 slides along the guide portion 1052 and finally enters the locking portion 1051, achieving locking and positioning. This structure ensures that the plug assembly automatically enters the locking state after insertion, preventing it from falling off due to external force or vibration, and improving connection stability.

[0033] In an optional embodiment of this application, the surface of the plug housing 205 is provided with a first rotation locking mark 206, and the surface of the socket housing 104 is provided with a second rotation locking mark 106.

[0034] After the plug assembly 20 is inserted into the socket assembly 10, when the locking part 2051 slides along the guide groove 105 and finally locks in the preset locking position, the first rotary locking mark 206 will be visually precisely aligned with the second rotary locking mark 106 and arranged in a straight line. This alignment relationship can serve as a visual cue for the mechanical locking state (indicating that the plug assembly and the socket assembly are in a mechanically locked state), thereby helping the operator to confirm whether the connection has been reliably completed.

[0035] The first rotation locking mark 206 and the second rotation locking mark 106 can be in the form of color markings, arrows, embossed symbols, printed graphics, etc.

[0036] It should be noted that the outer surface of the plug housing 205 has a direction mark 201 for indicating the direction of rotation. This direction mark 201 can be an arrow pattern, an embossed symbol, an embossed graphic, or a printed mark, and is preferably located near the locking part 2051. It is used to clearly indicate in which direction the plug assembly 20 should be rotated after being inserted into the socket assembly 10 to achieve mechanical locking, avoiding locking failure or damage to the connector structure due to incorrect direction, significantly improving on-site assembly efficiency and safety, and is especially suitable for industrial electrical applications that require rapid installation and disassembly.

[0037] In an optional embodiment of this application, the plug assembly 20 further includes a plug snap-fit ​​structure 202, which is used to position and securely fix the plug terminal 203 inside the plug housing 205.

[0038] Specifically, one end of the plug inner snap structure 202 is configured as a clamping structure or guide groove to support and fix the plug terminal 203; the other end has a plug locking protrusion 204. The size and position of the plug locking protrusion 204 are designed to match the plug locking groove 209 provided on the inner wall of the plug housing 205. During the insertion process, the plug locking protrusion 204 can be inserted into the locking groove on the inner wall of the plug housing 205 and locked in place.

[0039] In this embodiment, through the structural cooperation of the plug inner buckle structure 202, the plug clip protrusion 204 and the inner wall groove, the plug terminal 203 not only obtains stable positioning in the plug housing 205, preventing axial or radial displacement during the insertion process, but also facilitates the rapid assembly of the terminal, improving production efficiency and consistency.

[0040] In an optional embodiment of this application, the socket assembly 10 further includes a socket inner buckle structure 101, which is used to achieve stable fixation and precise positioning of the socket terminal 102 in the socket housing 104.

[0041] Specifically, one end of the socket snap-fit ​​structure 101 is used to install and fix the socket terminal 102, preferably in the form of a crimp or a mating groove, to ensure conductivity and structural reliability; the other end forms a socket locking protrusion 103. The shape and size of the socket locking protrusion 103 match the socket locking groove 109 provided on the inner wall of the socket housing 104. During installation, the socket locking protrusion 103 is inserted into the inner wall locking groove of the socket housing 104 and locked in place, thereby achieving axial limiting and locking of the socket terminal and ensuring the positioning stability of the socket terminal 102 in long-term operation and high-frequency insertion and removal environments.

[0042] In an optional embodiment of this application, the socket terminal is a crown spring structure 207, which has good elastic contact performance and is particularly suitable for high current connection requirements.

[0043] Specifically, the crown spring structure 207 includes multiple elastic springs evenly distributed along the inner circumference of the socket terminal. These elastic springs are arranged in a circular pattern relative to the terminal axis and are bent inward to form a radial elastic clamping area.

[0044] When the plug assembly 20 is inserted into the socket assembly 10, the plug terminal 203 is inserted into the crown spring structure 207. The elastic spring undergoes elastic deformation under the action of the insertion force, providing a stable radial clamping force to ensure that a reliable electrical contact is formed between the plug terminal and the socket terminal.

[0045] This embodiment, through the crown spring structure 207, significantly reduces the insertion force and improves the smoothness of insertion and removal. On the other hand, it can effectively compensate for the gap changes between terminals caused by manufacturing tolerances, thermal expansion and contraction, etc., and improve contact reliability and vibration resistance. It is particularly suitable for critical working conditions such as high-frequency insertion and removal and high current density.

[0046] In an optional embodiment of this application, both the plug housing 205 and the socket housing 104 are made of plastic. Using plastic housings not only provides excellent electrical insulation but also effectively reduces the overall weight of the connector, improves product safety and production efficiency, and facilitates integrated design of the housing structure and the integration of complex functions.

[0047] In an optional embodiment of this application, the axial dimension of the single-core connector is 44mm-46mm, and the radial dimension is 13mm-14mm. Compared to common competing products, it has a shorter length and smaller outer diameter, which helps to save wiring space and increase module density. This size design not only facilitates the layout and installation of the connector in high-density environments, but also further reduces the product size and weight while ensuring electrical performance and mechanical strength, making it particularly suitable for miniaturized, highly integrated systems such as power batteries, industrial automation equipment, and power tools.

[0048] In a preferred embodiment of this application, the single-core connector is not only compact and easy to operate, but also possesses excellent mechanical, electrical, and environmental adaptability, making it suitable for high-current, high-reliability applications. Specific performance parameters are as follows:

[0049] 1) Mechanical properties:

[0050] The mechanical life of this single-core connector is no less than 200 cycles, making it suitable for applications requiring multiple mating and unmating cycles.

[0051] The insertion and extraction force does not exceed 75N, and the crown spring structure ensures smooth insertion and extraction, reducing operator fatigue.

[0052] 2) Electrical performance:

[0053] The connector supports two current configurations: 60A (for 8AWG cables) and 45A (for 10AWG cables), with a rated voltage of 150VDC.

[0054] It has a withstand voltage of up to 1500VDC and good insulation strength;

[0055] The insulation resistance is not less than 500MΩ (under normal temperature and humidity, test voltage 500VDC) to ensure system safety;

[0056] The temperature rise under rated current operating conditions is controlled within 45K, and the thermal stability is good.

[0057] 3) Environmental adaptability:

[0058] The operating temperature range is -40℃ to +125℃, which can cover most industrial and outdoor application needs;

[0059] The material's flame retardancy rating meets the UL94 V-0 standard, demonstrating excellent flame retardant properties.

[0060] After undergoing a 48-hour salt spray test, it demonstrates excellent corrosion resistance and is suitable for harsh environments.

[0061] 4) Materials and processing:

[0062] The insulating parts of the plug and socket housings are made of PBT or PEI engineering plastics to ensure their mechanical strength, heat resistance and insulation performance;

[0063] The surface of metal parts (such as terminals) is treated with copper-nickel plating and silver plating, which can significantly improve conductivity and corrosion resistance.

[0064] It is compatible with wire sizes from 8AWG to 10AWG, making it easy to integrate with various industrial wire harness systems.

[0065] This application also provides a charging component, including a charging device and a single-core connector as described in the above embodiments. One end of the single-core connector is used for electrical connection with a power supply end, and the other end is used for electrical connection with the charging device.

[0066] The single-core connector and power transmission device of this application embodiment, by providing a locking part on the inner wall of the plug housing and a non-linear guide groove on the outer wall of the socket housing, allows the plug assembly and socket assembly to achieve mechanical locking through rotation after mating. This effectively avoids the loosening and detachment problems of traditional direct-plug connection structures during use, improving connection reliability. At the same time, this structure simplifies the operation steps, eliminates the need for additional locking components, and reduces assembly difficulty and manufacturing costs. Furthermore, the locking method through mechanical rotation provides clear insertion feedback, which helps improve safety and ease of operation, making it suitable for electrical connection applications with high reliability requirements.

[0067] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of the utility model should be covered within the scope of the utility model.

Claims

1. A single-core connector characterized by comprising: The single-core connector includes a plug assembly and a socket assembly that form a detachable connection. The plug assembly includes a plug housing and plug terminals built into the plug housing, and a locking portion is formed on the inner wall of the plug housing; The socket assembly includes a socket housing and socket terminals built into the socket housing, wherein the outer wall of the socket housing is formed with a non-linear guide groove; When the plug assembly mates with the socket assembly, the plug assembly rotates to allow the locking part to slide along the guide groove to the locking position, thereby achieving mechanical locking between the plug assembly and the socket assembly, while the plug terminals and the socket terminals are electrically connected.

2. The single-core connector of claim 1, wherein, The guide groove includes an inlet portion and a locking portion that are interconnected. The inlet portion is used to guide the locking part of the plug assembly to be inserted and slide along a set path; The locking part is located at the end area of ​​the guide groove and is used to lock the locking part in the preset locking position after the plug assembly is rotated to a preset angle, thereby realizing the mechanical locking of the plug assembly and the socket assembly.

3. The single-core connector of claim 2, wherein, The surface of the plug housing is provided with a first rotation locking mark, and the surface of the socket housing is provided with a second rotation locking mark; When the locking part is engaged in the preset locking position, the first rotation locking mark aligns with the second rotation locking mark and is aligned in a straight line to indicate that the plug assembly and the socket assembly are in a mechanically locked state.

4. The single-core connector of claim 2, wherein, The plug assembly also includes a plug snap-in structure; One end of the plug snap structure is used to fix the plug terminal, and the other end has a plug clip protrusion. The protruding part of the plug can be inserted into and secured in the plug slot to achieve positioning and locking of the plug terminal.

5. The single-core connector of claim 4, wherein, The socket assembly also includes a socket snap-fit ​​structure; One end of the socket snap-fit ​​structure is used to fix the socket terminal, and the other end forms a socket clip protrusion; The socket card protrusion can be inserted into and secured in the socket card slot to achieve the positioning and locking of the socket terminal.

6. The single-core connector of claim 5, wherein, The socket terminals have a crown spring structure; The crown spring structure includes multiple elastic springs evenly distributed along the circumference. The elastic springs are bent inward to provide elastic clamping force when the plug terminal is inserted, thereby enhancing electrical contact stability and reducing insertion force.

7. The single-core connector as described in claim 3, characterized in that, The outer surface of the plug housing has a directional marking for indicating the direction of rotation.

8. The single-core connector as described in claim 2, characterized in that, The plug housing is a plastic housing, and the socket housing is a plastic housing.

9. The single-core connector as described in claim 2, characterized in that, The single-core connector has an axial dimension of 44-46mm and a radial dimension of 13-14mm.

10. A charging component, characterized in that, Includes charging equipment and a single-core connector as described in any one of claims 1 to 9; One end of the single-core connector is used for electrical connection with the power supply end, and the other end is used for electrical connection with the charging device.

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