Protective connector with overload fusing function
By incorporating a dual fuse structure and an insulating shell into the connector, the problem of a single fuse wire failing to fuse properly is solved, achieving efficient overload protection and enhanced safety, thereby improving the reliability of the connector and the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI JUNDE ELECTRONICS CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-28
AI Technical Summary
Existing connectors use a single fuse wire, which may fail to fuse properly due to manufacturing defects, aging, or special faults, thus failing to cut off overloaded circuits in time, leading to equipment damage or safety accidents.
A dual fuse structure was designed, with internal and external threads connecting fuse number one and fuse number two, respectively, to facilitate easy disassembly and replacement, and an insulating shell to enhance safety.
It enhances the overload protection capability of the connector, reduces the failure risk caused by a single fuse failure, improves maintenance efficiency and the reliability and safety of the connector, and prevents circuit failures caused by loose connections and impurities.
Smart Images

Figure CN224177692U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector technology, specifically a protective connector with overload fuse function. Background Technology
[0002] A connector is a component that establishes a communication bridge between interrupted or isolated parts of a circuit. It allows current to flow and ensures that the circuit can perform its intended function. Connectors are frequently used in the field of electronic engineering, as they not only simplify design and manufacturing processes and increase flexibility, but also help reduce production and maintenance costs. However, existing connectors often have certain problems, such as:
[0003] The "Connector with Fuse Function" application with application number CN202321535131.0 includes a plug assembly, a socket assembly, a first conductive element, a second conductive element, and a fuse. The plug assembly is configured to be detachably connected to the socket assembly. The first conductive element is disposed within the plug assembly. The second conductive element is disposed within the socket assembly. A first end of the fuse abuts against the first conductive element, and a second end of the fuse abuts against the second conductive element. This device uses a single fuse wire, but a single fuse wire may fail to fuse properly due to manufacturing defects, aging, or special fault conditions, and cannot ensure that the circuit can be cut off in time under overload, thus failing to meet daily needs. In view of this, a protective connector with overload fuse function is proposed to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a protective connector with overload fuse function to solve the problem mentioned in the background art that existing connectors use a single fuse wire, which may lead to failure to fuse properly due to manufacturing defects, aging or special fault conditions.
[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a plug assembly, a socket assembly, a first conductive rod, and a second conductive rod. The first conductive rod is located directly below the plug assembly, and the second conductive rod is located directly above the socket assembly. The upper end face of the first conductive rod is provided with a socket groove corresponding to the plug assembly, and the lower end face of the first conductive rod is provided with an internal thread groove. The first conductive rod is threadedly connected to a first fuse through the internal thread groove. The lower side shell of the first fuse is provided with an external thread, and the first fuse is threadedly connected to the second conductive rod through the external thread.
[0006] The above technical solution facilitates the disassembly and replacement of fuses, improving the convenience of maintenance.
[0007] As a preferred embodiment of this utility model, the lower housing of the second conductive rod is provided with an internal thread, and the second conductive rod is connected to a second fuse through the internal thread.
[0008] The above technical solution allows maintenance personnel to replace fuse number two separately without disassembling the entire connector, further improving maintenance efficiency and convenience. At the same time, by setting two fuses, namely fuse number one and fuse number two, dual protection is achieved, reducing the risk of the entire connector failing due to the failure of a single fuse, and enhancing the reliability and safety of the connector.
[0009] As a preferred embodiment of this utility model, the lower housing of the second fuse is provided with an external thread, and the upper housing of the socket assembly is provided with an internal thread corresponding to the second fuse.
[0010] The above technical solution simplifies the maintenance process and improves work efficiency. At the same time, this design makes the connection between the No. 2 fuse and the socket assembly more secure, reducing the risk of circuit failure due to loose connection and further enhancing the stability and safety of the connector.
[0011] As a preferred embodiment of this utility model, the second fuse is threadedly connected to the socket assembly via external and internal threads.
[0012] The above technical solution allows maintenance personnel to quickly and accurately install or remove the No. 2 fuse without complicated operations or tools, thus greatly saving maintenance time. At the same time, this threaded connection method ensures a tight fit between the No. 2 fuse and the socket assembly, effectively preventing circuit faults or safety hazards caused by poor connections.
[0013] As a preferred embodiment of this utility model, both the first conductive rod and the second conductive rod have insulating outer shells.
[0014] The above technical solution improves the overall safety of the connector; the insulating shell effectively isolates current and prevents electric shock risks caused by accidental contact, providing users with a safer and more reliable power environment; at the same time, the insulating shell also has certain wear resistance and corrosion resistance properties, which can extend the service life of the connector and reduce the risk of circuit failure caused by shell damage.
[0015] As a preferred embodiment of this utility model, the lower end face of the socket assembly is threaded with a connector, and the lower end face of the connector is provided with a plug for connecting to an external power source or other equipment; a sealing gasket is provided between the connector and the socket assembly to ensure the stability and safety of the connection.
[0016] The above technical solution allows operators to quickly and easily connect and disconnect external power supplies or other devices without cumbersome operations or special tools, thus significantly improving the operating efficiency and user experience of the connector. In addition, the design of the sealing gasket ensures a tight fit between the connector and the socket assembly, effectively preventing dust, moisture and other external impurities from entering the connector, reducing circuit failures or safety risks caused by impurities, and further enhancing the reliability and safety of the connector.
[0017] Compared with the prior art, the beneficial effects of this utility model are: by setting a dual-stage fuse, the device effectively avoids the risk of a single fuse wire failing to fuse in time due to manufacturing defects, and greatly enhances the overload protection capability of the connector; when the current exceeds the preset safety range, the dual-stage fuse can respond quickly and cut off the circuit, effectively preventing equipment damage or even fire and other safety accidents caused by overload.
[0018] 1. During installation, connect the first conductive rod to the plug assembly, then rotate the first fuse to the first conductive rod; rotate the second conductive rod to the lower end of the first fuse, then rotate the second fuse to the second conductive rod; rotate the second fuse to the socket assembly, and finally connect the socket assembly to the connector. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model from below;
[0020] Figure 2 This is a schematic diagram of the exploded structure of this utility model viewed from below;
[0021] Figure 3 This is a schematic diagram of the main structure of this utility model;
[0022] Figure 4 This is a three-dimensional structural diagram of the present invention;
[0023] Figure 5 This is a schematic diagram of the connection structure between the No. 1 conductive rod and the No. 1 fuse of this utility model;
[0024] Figure 6 This is a schematic diagram of the connection structure between the plug assembly and the first conductive rod of this utility model.
[0025] In the diagram: 1. Plug assembly; 2. Socket assembly; 3. Conductive rod No. 1; 4. Conductive rod No. 2; 5. Fuse No. 1; 6. Fuse No. 2; 7. Connector. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figures 1-6 The present invention provides a protective connector with overload fuse function, comprising a plug assembly 1, a socket assembly 2, a first conductive rod 3, and a second conductive rod 4. The first conductive rod 3 is located directly below the plug assembly 1, and the second conductive rod 4 is located directly above the socket assembly 2. The first conductive rod 3 has an upper end face with a socket groove corresponding to the plug assembly 1, and an internal thread groove on its lower end face housing. A first fuse 5 is threadedly connected to the first conductive rod 3 through the internal thread groove. An external thread is provided on the lower side housing of the first fuse 5, and the first fuse 5 is threadedly connected to the second conductive rod 4 through the external thread, facilitating fuse disassembly and replacement and improving maintenance convenience.
[0028] The lower housing of the second conductive rod 4 is provided with an internal thread, and the second conductive rod 4 is connected to the second fuse 6 through the internal thread. This allows maintenance personnel to replace the second fuse 6 separately without disassembling the entire connector, further improving the efficiency and convenience of maintenance. At the same time, by setting two fuses, namely the first fuse 5 and the second fuse 6, dual protection is achieved, reducing the risk of the entire connector failing due to the failure of a single fuse, and enhancing the reliability and safety of the connector.
[0029] The lower housing of fuse 6 has an external thread, and the upper housing of socket assembly 2 has an internal thread corresponding to fuse 6. This simplifies the maintenance process and improves work efficiency. At the same time, this design makes the connection between fuse 6 and socket assembly 2 more secure, reduces the risk of circuit failure due to loose connection, and further enhances the stability and safety of the connector.
[0030] The No. 2 fuse 6 is connected to the socket assembly 2 by external and internal threads, which makes it easy for maintenance personnel to quickly and accurately install or remove the No. 2 fuse 6 without complicated operations or tools, thus greatly saving maintenance time. At the same time, this threaded connection method ensures a tight fit between the No. 2 fuse 6 and the socket assembly 2, effectively preventing circuit failures or safety hazards caused by poor connection.
[0031] Both conductive rod 3 (number one) and conductive rod 4 (number two) have insulating shells, which improves the overall safety of the connector. The insulating shells effectively isolate current and prevent the risk of electric shock caused by accidental contact, providing users with a safer and more reliable power environment. At the same time, the insulating shells also have certain wear resistance and corrosion resistance, which can extend the service life of the connector and reduce the risk of circuit failure caused by shell damage.
[0032] The lower end face of the socket assembly 2 is threaded with a connector 7, and the lower end face of the connector 7 is provided with a plug for connecting to an external power source or other equipment. A sealing gasket is provided between the connector 7 and the socket assembly 2 to ensure the stability and safety of the connection, allowing operators to quickly and conveniently connect and disconnect external power sources or other equipment without cumbersome operations or special tools, thereby significantly improving the operating efficiency and user experience of the connector. In addition, the design of the sealing gasket ensures a tight fit between the connector 7 and the socket assembly 2, effectively preventing dust, moisture and other external impurities from entering the connector, reducing circuit failures or safety risks caused by impurities, and further enhancing the reliability and safety of the connector.
[0033] Working principle: During installation, connect the first conductive rod 3 to the plug assembly 1, then rotate the first fuse 5 to the first conductive rod 3; rotate the second conductive rod 4 to the lower end of the first fuse 5, then rotate the second fuse 6 to the second conductive rod 4; rotate the second fuse 6 to the socket assembly 2, and finally connect the socket assembly 2 to the connector 7.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A protective connector with overload fuse function, comprising a plug assembly (1), a socket assembly (2), a first conductive rod (3) and a second conductive rod (4), wherein the first conductive rod (3) is located directly below the plug assembly (1) and the second conductive rod (4) is located directly above the socket assembly (2), characterized in that: The upper end face of the first conductive rod (3) is provided with a plug slot corresponding to the plug assembly (1), and the lower end face of the first conductive rod (3) is provided with an internal thread groove; the first conductive rod (3) is threadedly connected to the first fuse (5) through the internal thread groove; the lower side of the first fuse (5) is provided with an external thread, and the first fuse (5) is threadedly connected to the second conductive rod (4) through the external thread.
2. A protective connector with overload fuse function according to claim 1, characterized in that: The lower housing of the second conductive rod (4) is provided with an internal thread, and the second conductive rod (4) is connected to the second fuse (6) through the internal thread.
3. A protective connector with overload fuse function according to claim 2, characterized in that: The lower housing of the second fuse (6) is provided with an external thread, and the upper housing of the socket assembly (2) is provided with an internal thread corresponding to the second fuse (6).
4. A protective connector with overload fuse function according to claim 3, characterized in that: The second fuse (6) is threadedly connected to the socket assembly (2) via external and internal threads.
5. A protective connector with overload fuse function according to claim 4, characterized in that: The outer shells of the first conductive rod (3) and the second conductive rod (4) are both insulating shells.
6. A protective connector with overload fuse function according to claim 4, characterized in that: The socket assembly (2) has a connecting seat (7) threadedly connected to its lower end face, and the connecting seat (7) has a plug head on its lower end face for connecting to an external power source or other equipment; a sealing gasket is provided between the connecting seat (7) and the socket assembly (2).
Citation Information
Patent Citations
Connector with fusing function
CN220122224U