Circuit connection terminal and vehicle fuse box
By designing circuit connection terminals with multiple connection points and employing technologies such as corrugated groove structure and high-frequency welding, the problems of numerous wires, messy layout, and easy interference in traditional circuits have been solved, thereby simplifying the circuit and improving its reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING JINKANG NEW ENERGY VEHICLE CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-05-15
AI Technical Summary
In traditional circuit layouts, multiple power supply loops result in numerous connecting wires, a messy layout, and susceptibility to interference. Furthermore, a single power supply loop failure can affect the normal operation of functional components, necessitating redundant management.
Design a circuit connection terminal with multiple connection positions and a U-shaped connection part. It adopts a corrugated groove structure and high-frequency welding, combined with reinforcing ribs and anti-rotation auxiliary structure to ensure stable current transmission and connection reliability.
Simplify circuit layout, reduce wire interference, improve connection reliability and structural strength, ensure dual circuit protection for critical components, and reduce the risk of failure.
Smart Images

Figure CN224248984U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive circuit connection technology, specifically relating to a circuit connection terminal and a vehicle fuse box. Background Technology
[0002] In traditional circuit layouts, each power supply loop typically corresponds to one connection terminal to transmit current. However, transmitting current through multiple power supply loops requires multiple connection terminals, which can easily lead to problems such as numerous connecting wires, messy connection layouts, and susceptibility to interference. Furthermore, when one power supply loop fails, it will affect the normal operation of that functional component, thus requiring redundancy management for that component.
[0003] Therefore, existing technologies need to be improved to solve the aforementioned problems. Utility Model Content
[0004] In view of this, the present invention provides a circuit connection terminal and a vehicle fuse box, which has the advantages of simplifying circuit layout, improving connection reliability, and enhancing structural strength.
[0005] This utility model discloses a circuit connection terminal, including a terminal body. The terminal body has a first connection end for connecting to a circuit wire and a second connection end for connecting to a potential-taking structure. The second connection end is provided with at least two connection positions for connecting to the potential-taking structure.
[0006] Furthermore, the terminal body has a plate-like structure and a U-shaped connecting portion is provided at the first connecting end. The U-shaped connecting portion is formed by folding the two ends of the terminal body upward in the width direction.
[0007] Furthermore, the second connecting end is provided with at least two connecting portions in parallel, and the connecting position is located at the end of the connecting portion away from the U-shaped connecting portion.
[0008] Furthermore, the top of the side wall of the U-shaped connector is provided with a corrugated groove structure, and the two corrugated groove structures are engaged with each other.
[0009] Furthermore, the sidewalls of the U-shaped connector are bent towards each other and the corrugated groove structures are interlocked and then connected and fixed to the circuit wires by high-frequency welding.
[0010] Furthermore, the connection position is provided with a connection hole for connecting to the potential taking structure.
[0011] Furthermore, a reinforcing rib for strengthening the structure is provided on the terminal body located between the U-shaped connecting portion and the connecting portion.
[0012] Furthermore, the terminal body is provided with an anti-rotation auxiliary structure at the second connection end for preventing rotation after installation.
[0013] Furthermore, the first connecting end and the second connecting end are set at an angle in the vertical direction.
[0014] A vehicle fuse box is also provided, characterized in that: the aforementioned circuit connection terminals are installed inside the vehicle fuse box.
[0015] The beneficial effects of this utility model are:
[0016] This utility model provides a circuit connection terminal and a vehicle fuse box. Through the design of the terminal body, the circuit layout is simplified, the wire arrangement is more reasonable, the connection is clearer, and the interference problem between two (multiple) power lines is solved. At the same time, it ensures that key components are protected by dual circuits, reducing the risk of accidents. High-frequency welding is used, which has the advantages of lower equipment cost, simpler tooling and better versatility, and higher connection reliability compared with ultrasonic welding. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the circuit connection terminals in this utility model;
[0018] Reference numerals: 1. Terminal body; 2. U-shaped connector; 3. Connecting part; 4. Connecting position; 5. Connecting hole; 6. Anti-rotation auxiliary structure; 7. Reinforcing rib; 8. Corrugated groove structure. Detailed Implementation
[0019] It should be noted that in the description of this specification, the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.
[0020] As shown in the figure, an embodiment of this utility model discloses a circuit connection terminal, including a terminal body 1. The terminal body 1 has a first connection end for connecting to a circuit wire and a second connection end for connecting to a potential-taking structure. The second connection end is provided with at least two connection positions 4 for connecting to the potential-taking structure. The terminal body 1 can be made of various materials, such as copper, aluminum, or other conductive materials, to ensure good conductivity. The first connection end can be fixedly connected to the circuit wire by welding, crimping, or bolting to ensure stable current transmission. The connection positions 4 of the second connection end can be designed in various forms, such as plug-in, snap-fit, or threaded connection, to achieve reliable connection with the potential-taking structure. The number of connection positions 4 can be adjusted according to actual needs, for example, two, three, or more connection positions 4 can be provided to meet the needs of different application scenarios. The shape of the terminal body 1 can be designed according to specific application scenarios, such as using a plate-like, columnar, or other geometric shape, to facilitate installation and fixing. The positional relationship between the first and second connection ends can also be adjusted according to actual needs, for example, they can be set at a certain angle in the horizontal or vertical direction to adapt to different circuit layouts. This technical solution effectively solves the problems of numerous connecting wires, messy layout, and easy interference caused by multiple power supply loops in traditional circuit layouts by setting multiple connection points 4. Multiple connection points 4 can simultaneously connect multiple potential extraction structures, thereby reducing the number of connection terminals, simplifying circuit layout, and reducing the complexity of installation and maintenance. Specifically, there are two connection points 4 in this solution, each connected to a potential extraction structure. The current obtained from both connection points 4 reaches the same electrical component. During the operation of the electrical component, there may be accidents or other factors that cause the current in the circuit of one connection point 4 to be disconnected. However, due to redundancy, even if one power supply is damaged and disconnected, the other can continue to supply power to the electrical component, ensuring the normal operation of the electrical component and thus achieving redundancy effect, improving the reliability and redundancy management capability of the system.
[0021] In this embodiment, the terminal body 1 has a plate-like structure and a U-shaped connecting part 2 is provided at the first connecting end. The U-shaped connecting part 2 is formed by folding the two ends of the terminal body 1 upward in the width direction. The U-shaped connecting part 2 enables the terminal body 1 to be better connected to the circuit wire, and the structure formed by folding enhances the stability of the connection. After the two ends of the U-shaped connecting part 2 are folded upward in the width direction, a U-shaped groove with an upward opening is formed. This groove can be used to accommodate the circuit wire and to firmly connect the circuit wire to the terminal body 1 by welding or crimping or other fixing methods.
[0022] In this embodiment, the second connection terminal has at least two connecting portions 3 arranged side by side, and the connecting position 4 is located at the end of the connecting portion 3 away from the U-shaped connecting portion 2. The side-by-side arrangement of the connecting portions 3 allows the second connection terminal to connect to multiple potential-taking structures simultaneously, thereby improving the flexibility and reliability of the connection. The connection position 4, located at the end of the connecting portion away from the U-shaped connecting portion 2, ensures a more stable connection between the potential-taking structure and the connecting portion 3, avoiding connection loosening or failure due to improper placement of the connection position 4.
[0023] In this embodiment, a corrugated groove structure 8 is provided on the top of the side wall of the U-shaped connecting part 2, and the two corrugated groove structures 8 are engaged with each other. After the side walls of the U-shaped connecting part 2 are bent towards each other and the corrugated groove structures 8 are engaged with each other, they are connected and fixed to the circuit wires by high-frequency welding. The design of the corrugated groove structure 8 makes the side walls of the U-shaped connecting part 2 form a mutually cooperating concave-convex structure at the top. This structure can enhance the mechanical strength and stability of the connection part. The engagement of the corrugated groove structure 8 not only facilitates installation, but also provides a better contact area during the connection process, thereby improving the reliability of current conduction. The application of high-frequency welding technology further ensures the firmness and conductivity of the connection part, reduces the risk of failure due to poor connection, and has the advantages of lower equipment cost, simpler and more versatile tooling, and higher connection reliability compared with ultrasonic welding.
[0024] In this embodiment, the connection position 4 is provided with a connection hole 5 for connecting to the potential extraction structure. By providing the connection hole 5 on the connection position 4, a convenient connection with the potential extraction structure is achieved, solving the problem of unstable connection between the connection terminal and the potential extraction structure in traditional circuit layouts. The design of the connection hole 5 allows the potential extraction structure to be firmly connected to the connection position 4 by bolts or screws, avoiding problems such as unstable current transmission or poor contact caused by loose connection.
[0025] In this embodiment, a reinforcing rib 7 is provided on the terminal body 1 located between the U-shaped connecting portion 2 and the connecting portion 3 to enhance structural strength. The specific shape of the reinforcing rib 7 can be straight, wavy, or other geometric shapes, and its thickness and width can be adjusted according to actual needs. The reinforcing rib 7 can be integrally formed with the terminal body 1 by stamping, casting, or welding. The reinforcing rib 7 effectively improves the bending and torsional resistance of the terminal body 1, especially in the area between the U-shaped connecting portion 2 and the connecting portion 3. Since this area typically bears significant mechanical and thermal stress, the presence of the reinforcing rib 7 significantly enhances the stability of this area, preventing deformation or breakage caused by external forces. Simultaneously, the reinforcing rib 7 also strengthens the terminal body 1, ensuring its stability even under certain external forces during assembly and use. Furthermore, the reinforcing rib 7 can optimize the stress distribution of the terminal body 1, reducing local stress concentration and thus extending the terminal's service life.
[0026] In this embodiment, the terminal body 1 is provided with an anti-rotation auxiliary structure 6 at the second connection end for preventing rotation after installation. The anti-rotation auxiliary structure 6 can be implemented in various ways, such as providing a protruding or recessed structure at the second connection end of the terminal body 1, which cooperates with the corresponding structure on the potential-taking structure to prevent the terminal body 1 from rotating after installation; the anti-rotation auxiliary structure 6 can be a positioning protrusion provided on the terminal body 1, which cooperates with the positioning hole on the potential-taking structure to restrict the rotation of the terminal body 1; simultaneously combined with... Figure 1 As shown, the anti-rotation auxiliary structure 6 in this solution forms a triangular support structure with the connection positions 4 on the two connection parts 3 respectively, ensuring that the terminal body 1 will not move due to external vibration or improper operation during the movement of the whole vehicle, causing poor contact, thereby ensuring the reliability of the circuit connection; effectively solving the problem of easy rotation of traditional connection terminals.
[0027] In this embodiment, the first connection end and the second connection end are arranged at an angle in the vertical direction. By arranging the first connection end and the second connection end at an angle in the vertical direction, the problems of numerous connecting wires, messy layout, and easy interference in traditional circuit layouts can be effectively solved. This angle setting can reduce the crossing and overlap between wires, thereby simplifying the circuit layout, reducing the risk of circuit failure, and improving the stability and reliability of the connection, ensuring smooth current transmission.
[0028] In this embodiment, the present application also proposes a vehicle fuse box, wherein circuit connection terminals are installed inside the vehicle fuse box. Through its structural design, the circuit connection terminals inside the vehicle fuse box can effectively solve the problems of numerous connecting wires, messy layout, and easy interference caused by multiple power supply loops in traditional circuit layouts, thereby improving installation efficiency and structural stability.
[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A circuit connection terminal, characterized in that: The device includes a terminal body having a first connection end for connecting to a circuit wire and a second connection end for connecting to a potential-taking structure. The second connection end has at least two connection positions for connecting to the potential-taking structure.
2. The circuit connection terminal according to claim 1, characterized in that: The terminal body has a plate-like structure and a U-shaped connecting part is provided at the first connecting end. The U-shaped connecting part is formed by folding the two ends of the terminal body upward in the width direction.
3. The circuit connection terminal according to claim 2, characterized in that: The second connecting end has at least two connecting parts arranged side by side, and the connecting position is located at the end of the connecting part away from the U-shaped connecting part.
4. The circuit connection terminal according to claim 2, characterized in that: The top of the side wall of the U-shaped connector is provided with a corrugated groove structure, and the two corrugated groove structures are engaged with each other.
5. The circuit connection terminal according to claim 4, characterized in that: The side walls of the U-shaped connector are bent towards each other and the corrugated groove structures are interlocked and then connected and fixed to the circuit wires by high-frequency welding.
6. The circuit connection terminal according to claim 3, characterized in that: The connection position is provided with a connection hole for connecting to the potential taking structure.
7. The circuit connection terminal according to claim 3, characterized in that: The terminal body located between the U-shaped connecting part and the connecting part is provided with reinforcing ribs to enhance the structural strength.
8. The circuit connection terminal according to claim 1, characterized in that: The terminal body is provided with an anti-rotation auxiliary structure at the second connection end for preventing rotation after installation.
9. The circuit connection terminal according to claim 1, characterized in that: The first connecting end and the second connecting end are set at an angle in the vertical direction.
10. A vehicle fuse box, characterized in that: The vehicle fuse box is equipped with the circuit connection terminal as described in any one of claims 1-9.