An electric bicycle power supply charging plug facilitating plug extraction

By improving the design of the spring assembly and the pull handle, the problem of the electric bicycle power charging plug being difficult to unplug has been solved, reducing the risk of conductive heating, improving safety and service life, and ensuring personal safety and equipment durability.

CN224342579UActive Publication Date: 2026-06-09YANGZHOU ZHONGDE ELECTRIC APPLIANCE CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANGZHOU ZHONGDE ELECTRIC APPLIANCE CO LTD
Filing Date
2025-03-17
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing electric bicycle power charging plugs are difficult to unplug when the charging socket is damaged, causing the interface to overheat and posing a fire hazard. Furthermore, the structural design limits product updates.

Method used

The design incorporates a spring assembly and a pull handle structure. The spring assembly uses a convex design to increase the elastic pressure of the conductive spring and reduce the conductive resistance. The outer wall of the pull handle is covered with insulating plastic to prevent electric shock, and a metal plate is installed inside to improve mechanical strength.

Benefits of technology

It enables easy plug removal, reduces the risk of conductive heating, improves safety and service life, and prevents accidental electric shock, thus enhancing the safety and durability of the product.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224342579U_ABST
    Figure CN224342579U_ABST
Patent Text Reader

Abstract

The utility model discloses an electric bicycle power supply charging plug convenient for plug pulling out, and relates to the technical field of power supply charging plug, including plug outer die injection molding body, still include: plug spring subassembly, the plug spring subassembly sets up in the inside of plug outer die injection molding body, is used for realizing electrical connection to effectively conduct current, ensures the electric energy transmission of electric bicycle charging, the plug spring subassembly includes plug spring main part, the plug spring main part fixed mounting is in the inside of plug outer die injection molding body, the outer wall of plug spring main part is provided with recess, this electric bicycle power supply charging plug convenient for plug pulling out, the structure of copper plug spring is redesigned, increases the cross section of conductive plug spring leaf and the elastic pressure of conductive spring leaf through the design of both sides convex, reduces conductive resistance and conductive heating phenomenon, and simultaneously, the injection molding outer die adopts ninety degree elbow design, is convenient and quick, safe and reliable, novel appearance when inserting the socket.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of power charging plug technology, specifically to an electric bicycle power charging plug that is easy to unplug. Background Technology

[0002] The electric bicycle power charging plug is an important component that connects the electric bicycle to the power source. Its main function is to transfer electrical energy from the external power source to the electric bicycle's battery for charging.

[0003] Based on the needs of industry market development, the original power charger output interface plug has been improved in terms of product structure, so that the charger can be fully utilized, the scope of use has been expanded, and the problem of overheating and burning of the charger interface has been solved.

[0004] A smart socket for electric bicycle charging stations, authorized by announcement number CN220086486U, belongs to the field of smart socket technology. It includes a power terminal, with a wiring terminal installed on one side. A charging socket fixing mechanism is installed inside the side of the power terminal, and a connector is installed on the other side. A charging plug is installed inside the side of the connector, and a charging hole is opened on the side of the charging plug. This invention incorporates a cover plate fixing mechanism, which facilitates fixing the cover plate to the side of the connector, thereby protecting the charging hole and preventing external dust and water droplets from entering the charging hole and damaging the charging socket. The charging socket fixing mechanism also facilitates fixing the charging socket to the power port for power supply. Furthermore, when the charging socket is damaged, it can be easily unplugged for repair.

[0005] As shown in the above-mentioned device, although the existing electric bicycle power charging plugs allow for easy unplugging and repair when the charging socket is damaged, the original products are limited by the internal structural space and the size of the conductive springs, making it difficult to update the product. This causes the interface to overheat during charging and poses a significant fire hazard, a problem that has remained unresolved for a long time. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an electric bicycle power charging plug that is easy to unplug, thus solving the problems of existing technologies.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an electric bicycle power charging plug that facilitates plug removal, comprising an outer molded body for the plug, and further comprising:

[0008] A spring assembly is disposed inside the outer molded body of the plug to achieve electrical connection and effectively conduct current, ensuring the transmission of electrical energy during the charging of the electric bicycle;

[0009] The spring assembly includes a spring body, which is fixedly installed inside the plug outer mold injection body. The outer wall of the spring body has a groove, and the inner wall of the spring body is fixedly connected to a movable card to prevent the plug from loosening after being inserted into the socket. One end of the spring body is fixedly connected to a connecting piece, and the other end of the connecting piece is fixedly connected to a conductive spring.

[0010] Preferably, the outer wall of the plug outer mold injection body is provided with a socket for insertion into the socket end, and the outer wall of the plug outer mold injection body is provided with a semi-circular groove for limiting the plug when it is inserted into the socket. One end of the plug outer mold injection body is fixedly connected to a plug bracket.

[0011] Preferably, a sheath wire is fixedly connected to one side of the plug bracket, and a power wire is fixedly connected inside the sheath wire for power transmission. The power wire is connected to the plug outer mold injection body through the sheath wire and the plug bracket.

[0012] Preferably, the outer wall of the plug bracket is provided with a handle for convenient plugging and unplugging of the entire device.

[0013] Preferably, the outer wall of the handle is covered with insulating plastic to prevent electrical leakage from causing harm to the user, and a metal plate is fixedly connected inside the handle to improve the service life of the handle.

[0014] Preferably, the outer wall of the handle is provided with a connecting groove, and a connecting rod is fixedly connected to the inner wall of the connecting groove. The handle is fixedly connected to the outer wall of the plug bracket through the connecting rod.

[0015] This invention provides an electric bicycle charging plug that is easy to unplug. Compared with the prior art, it has the following advantages:

[0016] 2. This electric bicycle power charging plug, which is easy to unplug, features a redesigned copper spring structure. The convex design on both sides increases the cross-section of the conductive spring and the elastic pressure on the conductive spring, reducing conductive resistance and heat generation. At the same time, the injection mold adopts a 90-degree bend design, making it convenient, quick, safe, reliable, and novel in appearance when inserted into the socket.

[0017] 2. This electric bicycle power charging plug, which facilitates plug removal, incorporates a lever mechanism for easy plug removal and insertion. The outer wall of the lever is covered with insulating plastic, which effectively blocks current, preventing accidental electric shock and ensuring personal safety. Furthermore, the metal plate inside the lever increases its mechanical strength and extends its service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side view of the overall structure of this utility model;

[0020] Figure 3 This is a top view of the overall structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the spring assembly of this utility model.

[0022] In the diagram: 1. Plug bracket; 2. Plug outer mold injection body; 3. Pull handle; 4. Sheath cable; 5. Socket; 6. Semi-circular groove; 7. Power cord; 8. Spring assembly; 81. Spring body; 82. Groove; 83. Movable card; 84. Connecting piece; 85. Conductive spring; 9. Connecting groove; 10. Connecting rod. Detailed Implementation

[0023] 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.

[0024] See Figures 1-4 This utility model provides the following two technical solutions:

[0025] First embodiment: An electric bicycle power charging plug that is easy to unplug, including a plug outer mold injection body 2, and further comprising:

[0026] The spring assembly 8 is disposed inside the plug outer mold injection body 2 to realize electrical connection and effectively conduct current, ensuring the transmission of electrical energy when the electric bicycle is charging;

[0027] The spring assembly 8 includes a spring body 81, which is fixedly installed inside the plug outer mold injection body 2. The outer wall of the spring body 81 has a groove 82, and the inner wall of the spring body 81 is fixedly connected to a movable card 83 to prevent the plug from loosening after being inserted into the socket. One end of the spring body 81 is fixedly connected to a connecting piece 84, and the other end of the connecting piece 84 is fixedly connected to a conductive spring 85.

[0028] The outer wall of the plug outer mold injection body 2 is provided with a socket 5 for insertion into the socket end. The outer wall of the plug outer mold injection body 2 is provided with a semi-circular groove 6 for limiting the plug when it is inserted into the socket. One end of the plug outer mold injection body 2 is fixedly connected to a plug bracket 1.

[0029] A sheathed wire 4 is fixedly connected to one side of the plug bracket 1. A power wire 7 is fixedly connected inside the sheathed wire 4 for power transmission. The power wire 7 is connected to the plug outer mold injection body 2 through the sheathed wire 4 and the plug bracket 1.

[0030] This electric bicycle power charging plug, which is easy to unplug, features a redesigned copper spring structure. The convex design on both sides increases the cross-section of the conductive spring and the elastic pressure on the conductive spring, reducing conductive resistance and heat generation. Meanwhile, the injection mold adopts a 90-degree bend design, making it convenient, quick, safe, reliable, and aesthetically pleasing when inserted into the socket.

[0031] The second embodiment differs from the first embodiment in that the outer wall of the plug bracket 1 is provided with a handle 3 for facilitating the insertion and removal of the entire device.

[0032] The outer wall of the handle 3 is covered with insulating plastic to prevent electrical leakage from causing harm to the user. A metal plate is fixedly connected inside the handle 3 to improve the service life of the handle 3.

[0033] The outer wall of the handle 3 is provided with a connecting groove 9, and a connecting rod 10 is fixedly connected to the inner wall of the connecting groove 9. The handle 3 is fixedly connected to the outer wall of the plug bracket 1 through the connecting rod 10.

[0034] This electric bicycle power charging plug, which facilitates plug removal, incorporates a lever mechanism for easy plug removal and insertion. The outer wall of the lever 3 is covered with insulating plastic, which effectively blocks current, preventing accidental electric shock and ensuring personal safety. Furthermore, the metal plate inside the lever 3 increases its mechanical strength and extends its service life.

[0035] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0036] During charging, the semi-circular groove 6 not only facilitates insertion but, more importantly, ensures safety by limiting the plug's position during insertion. It guarantees accurate alignment, preventing short circuits caused by misalignment. The movable clip 83 inside the spring body 81 prevents the plug from becoming loose. This design prevents accidental pulling or slight vibrations during charging, avoiding charging interruptions or dangerous situations like sparks. The clever design of pressing the lever to disengage the plug when fully charged further avoids the need for excessive force when unplugging traditional plugs or the risk of damage to the socket or plug due to improper insertion or removal. This design positively enhances the safety and durability of the entire charging system.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] 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. An electric bicycle power charging plug that is easy to unplug, comprising an outer molded body (2) of the plug, characterized in that, Also includes: The spring assembly (8) is disposed inside the plug outer mold injection body (2) to realize electrical connection and effectively conduct current to ensure the transmission of electrical energy when the electric bicycle is charging; The spring assembly (8) includes a spring body (81), which is fixedly installed inside the plug outer mold injection body (2). The outer wall of the spring body (81) is provided with a groove (82), and the inner wall of the spring body (81) is fixedly connected with a movable card (83) to prevent the plug from loosening after being inserted into the socket. One end of the spring body (81) is fixedly connected with a connecting piece (84), and the other end of the connecting piece (84) is fixedly connected with a conductive spring piece (85).

2. The electric bicycle power charging plug that is easy to unplug as described in claim 1, characterized in that: The outer wall of the plug outer mold injection body (2) is provided with a socket (5) for insertion into the socket end. The outer wall of the plug outer mold injection body (2) is provided with a semi-circular groove (6) for limiting the plug when it is inserted into the socket. One end of the plug outer mold injection body (2) is fixedly connected to a plug bracket (1).

3. The electric bicycle power charging plug that is easy to unplug as described in claim 2, characterized in that: A sheath wire (4) is fixedly connected to one side of the plug bracket (1), and a power wire (7) is fixedly connected inside the sheath wire (4) for power transmission. The power wire (7) is connected to the plug outer mold injection body (2) through the sheath wire (4) and the plug bracket (1).

4. The electric bicycle power charging plug that is easy to unplug as described in claim 2, characterized in that: The outer wall of the plug bracket (1) is provided with a handle (3) for facilitating the insertion and removal of the entire device.

5. The electric bicycle power charging plug that is easy to unplug as described in claim 4, characterized in that: The outer wall of the handle (3) is covered with insulating plastic to prevent power leakage from causing harm to the user. A metal plate is fixedly connected inside the handle (3) to improve the service life of the handle (3).

6. The electric bicycle power charging plug that is easy to unplug as described in claim 4, characterized in that: The outer wall of the pull handle (3) is provided with a connecting groove (9), and a connecting rod (10) is fixedly connected to the inner wall of the connecting groove (9). The pull handle (3) is fixedly connected to the outer wall of the plug bracket (1) through the connecting rod (10).