A waterproof sealed type AC charging gun wire joint
By employing a double-sealing structure and threaded self-locking characteristics in the AC charging gun connector, the problem of rainwater penetration is solved, achieving stable charging connection and waterproof performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI YUANYONG TECH CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-21
AI Technical Summary
Existing AC charging gun connectors cannot effectively isolate external interference, leading to rainwater infiltration and affecting charging stability.
It adopts a double sealing structure, including a first sealing ring and a second sealing ring, combined with a hexagonal waterproof plate and a trapezoidal protective ring to form a multi-layer waterproof design. The threaded drive self-locking characteristic ensures that the plug and socket are coaxially connected to prevent misalignment.
It effectively blocks and seals rainwater, enhances vibration resistance, and ensures the stability and waterproof performance of the charging connection.
Smart Images

Figure CN224537451U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive parts, specifically relating to a waterproof and sealed AC charging gun connector. Background Technology
[0002] The AC charging gun connector is a key component used to connect AC power sources to electric vehicles or other electrical equipment. It is a core component of the charging connection system, and its main function is to enable the safe transmission of electrical energy from charging facilities to electrical equipment.
[0003] Existing AC charging gun connectors achieve sealing only through simple plugging, which cannot isolate external interference and is therefore susceptible to external factors, potentially leading to rainwater infiltration and affecting charging stability. Therefore, a waterproof and sealed AC charging gun connector is needed to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a waterproof and sealed AC charging gun connector to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a waterproof and sealed AC charging gun connector, comprising an AC connector, a positioning ring fixedly connected to one end of the AC connector, a wiring socket fixedly connected to one end of the AC connector, a wiring plug inserted into the wiring socket, an AC connector fixedly connected to one end of the wiring plug, a threaded groove formed on the surface of the positioning ring, an internal threaded ring threadedly connected to the surface of the threaded groove, a first sealing ring fixedly connected to the surface of the internal threaded ring, a hexagonal waterproof plate fixedly connected to the surface of the first sealing ring, a second sealing ring fixedly connected to the inner wall of the hexagonal waterproof plate, a scraper ring fixedly connected to one end of the hexagonal waterproof plate, a trapezoidal groove formed inside the positioning ring, and a trapezoidal protective ring slidably connected to the inner wall of the trapezoidal groove.
[0006] By setting up the above structure, the first and second sealing rings form a double seal, blocking the infiltration path of dust and moisture. The hexagonal design of the hexagonal waterproof plate can block and guide rainwater as comprehensively as possible, preventing rainwater from easily seeping in. At the same time, the scraper ring at one end of the hexagonal waterproof plate can scrape off dust, water droplets, and other debris from the surface of the positioning ring and AC connector, preventing debris from embedding into the sealing surface and causing seal failure. The trapezoidal structure formed by the trapezoidal protective ring and the trapezoidal groove creates a wedge effect, which can enhance the vibration resistance of the sealing structure and prevent the hexagonal waterproof plate from radially shifting. Meanwhile, the sliding trapezoidal protective ring covers the threaded groove on the surface of the positioning ring, which can prevent dust and moisture from contacting the threaded transmission components. With the linkage and cooperation of each structure, the waterproof, sealing, and protection functions of the AC charging gun connector can be achieved, ensuring the stability of the charging connection.
[0007] As a preferred embodiment, the positioning ring is located outside the wiring socket.
[0008] As a preferred embodiment, the internal threaded ring is threadedly connected to the positioning ring.
[0009] As a preferred embodiment, the first sealing ring slides on the surface of the positioning ring.
[0010] As a preferred embodiment, the second sealing ring slides on the surface of the positioning ring.
[0011] As a preferred embodiment, the scraper ring is in contact with the surface of the positioning ring.
[0012] As a preferred embodiment, one end of the trapezoidal protective ring is fixedly connected to the other end of the hexagonal waterproof membrane.
[0013] By setting up a positioning ring, an internal threaded ring, and a threaded groove, the positioning ring provides an external positioning reference to ensure that the plug and socket are coaxially aligned and to avoid poor contact. The internal threaded ring engages with the threaded groove on the surface of the positioning ring, and the self-locking characteristic of the thread drive achieves axial fastening to prevent the waterproof and sealing structure from shifting.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This invention, by setting a first sealing ring, a second sealing ring, and a hexagonal waterproof plate, forms a double seal, blocking the infiltration path of dust and moisture. The hexagonal design of the waterproof plate can block and guide rainwater as comprehensively as possible, preventing rainwater from easily seeping in. At the same time, the scraper ring at one end of the hexagonal waterproof plate can scrape off dust, water droplets, and other debris from the surface of the positioning ring and AC connector, preventing debris from embedding into the sealing surface and causing seal failure. The trapezoidal structure formed by the trapezoidal protective ring and the trapezoidal sliding groove creates a wedge-tightening effect, which can enhance the vibration resistance of the sealing structure and prevent the hexagonal waterproof plate from radially shifting. Meanwhile, the sliding trapezoidal protective ring covers the threaded groove on the surface of the positioning ring, which can prevent dust and moisture from contacting the threaded transmission components. With the linkage and cooperation of all structures, the waterproof, sealing, and protection functions of the AC charging gun connector can be achieved, ensuring the stability of the charging connection.
[0016] This invention, by setting a positioning ring, an internal threaded ring, and a threaded groove, provides an external positioning reference to ensure that the plug and socket are coaxially connected and to avoid poor contact. The internal threaded ring cooperates with the threaded groove on the surface of the positioning ring, and achieves axial fastening through the self-locking characteristic of the threaded transmission, preventing the waterproof and sealing structure from shifting. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a schematic diagram of the positioning ring of this utility model;
[0019] Figure 3 This is a schematic diagram of the internal threaded ring of this utility model;
[0020] Figure 4 This is a schematic diagram of the internal cross-section of the present invention;
[0021] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle.
[0022] In the diagram: 1. AC connector; 2. Positioning ring; 3. Wiring socket; 4. Wiring plug; 5. AC connector; 6. Threaded groove; 7. Internal threaded ring; 8. First sealing ring; 9. Hexagonal waterproof plate; 10. Second sealing ring; 11. Scraper ring; 12. Trapezoidal groove; 13. Trapezoidal protective ring. Detailed Implementation
[0023] The present invention will be further described below with reference to the embodiments.
[0024] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.
[0025] Please see Figure 1-5This utility model provides a waterproof and sealed AC charging gun connector, including an AC connector 1, a positioning ring 2 fixedly connected to one end of the AC connector 1, a wiring socket 3 fixedly connected to one end of the AC connector 1, a wiring plug 4 inserted into the wiring socket 3, an AC connector 5 fixedly connected to one end of the wiring plug 4, a threaded groove 6 on the surface of the positioning ring 2, an internal threaded ring 7 threadedly connected to the surface of the threaded groove 6, a first sealing ring 8 fixedly connected to the surface of the internal threaded ring 7, a hexagonal waterproof plate 9 fixedly connected to the surface of the first sealing ring 8, a second sealing ring 10 fixedly connected to the inner wall of the hexagonal waterproof plate 9, a scraper ring 11 fixedly connected to one end of the hexagonal waterproof plate 9, a trapezoidal sliding groove 12 inside the positioning ring 2, and a trapezoidal protective ring 13 slidably connected to the inner wall of the trapezoidal sliding groove 12. By setting the first sealing ring 8, the second sealing ring 10, and the... The hexagonal waterproof plate 9, the first sealing ring 8, and the second sealing ring 10 form a double seal, blocking the infiltration path of dust and moisture. The hexagonal design of the hexagonal waterproof plate 9 can block and guide rainwater as comprehensively as possible, preventing rainwater from easily seeping in. At the same time, the scraper ring 11 at one end of the hexagonal waterproof plate 9 can scrape off dust, water droplets, and other debris from the surface of the positioning ring 2 and the AC connector 5, preventing debris from embedding into the sealing surface and causing seal failure. The trapezoidal structure formed by the trapezoidal protective ring 13 and the trapezoidal sliding groove 12 forms a wedge-tightening effect, which can enhance the vibration resistance of the sealing structure and prevent the hexagonal waterproof plate 9 from radially shifting. At the same time, the sliding trapezoidal protective ring 13 covers the threaded groove 6 on the surface of the positioning ring 2, which can prevent dust and moisture from contacting the threaded transmission components. With the linkage and cooperation of each structure, the waterproof, sealing, and protection functions of the AC charging gun connector can be achieved, ensuring the stability of the charging connection.
[0026] The positioning ring 2 is located outside the wiring socket 3.
[0027] The internal threaded ring 7 is threadedly connected to the locating ring 2.
[0028] The first sealing ring 8 slides on the surface of the positioning ring 2.
[0029] The second sealing ring 10 slides on the surface of the positioning ring 2.
[0030] The scraper ring 11 is in contact with the surface of the positioning ring 2.
[0031] One end of the trapezoidal protective ring 13 is fixedly connected to the other end of the hexagonal waterproof plate 9. By setting the positioning ring 2, the internal threaded ring 7 and the threaded groove 6, the positioning ring 2 provides an external positioning reference to ensure that the plug and the socket are coaxially connected and to avoid poor contact. The internal threaded ring 7 cooperates with the threaded groove 6 on the surface of the positioning ring 2 to achieve axial fastening through the self-locking characteristic of the thread drive, preventing the waterproof and sealing structure from shifting.
[0032] Working principle and usage process of this utility model:
[0033] When using this waterproof and sealed AC charging gun connector, first insert the connector 4 into the socket 3. Then, rotate the internal threaded ring 7 to move it along the threaded groove 6 on the surface of the positioning ring 2. This causes the first sealing ring 8, the hexagonal waterproof plate 9, and the second sealing ring 10 to move towards the AC connector 5 simultaneously. When the hexagonal waterproof plate 9 moves to cover the connection between the connector 4 and the socket 3, it will protect the connection between the connector 4 and the socket 3 from multiple angles, blocking rainwater. The scraper ring 11 at one end of the hexagonal waterproof plate 9 slides against the surfaces of the positioning ring 2 and the AC connector 5, scraping away dust. Water droplets and other debris are cleaned from the sealing surface. At the same time, the first sealing ring 8 and the second sealing ring 10 respectively adhere to the surfaces of the positioning ring 2 and the AC connector 5 to form a sealed environment. The trapezoidal protective ring 13 moves with the hexagonal waterproof plate 9 within the trapezoidal groove 12. The trapezoidal structure formed by the two not only enhances the stability of the sealing structure and prevents the hexagonal waterproof plate 9 from shifting, but also ensures that the sliding trapezoidal protective ring 13 always protects the threaded groove 6 on the surface of the positioning ring 2, preventing the transmission structure from being interfered with by external factors. With the synergistic cooperation of the above structures, a waterproof seal is achieved at the connection between the wiring plug 4 and the wiring socket 3, ensuring the stability of the connection.
[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 waterproof and sealed AC charging gun connector, comprising an AC connector (1), characterized in that: One end of the AC connector (1) is fixedly connected to a positioning ring (2), and one end of the AC connector (1) is fixedly connected to a wiring socket (3). A wiring plug (4) is inserted into the wiring socket (3). One end of the wiring plug (4) is fixedly connected to an AC connector (5). A threaded groove (6) is opened on the surface of the positioning ring (2). An internal threaded ring (7) is threadedly connected to the surface of the threaded groove (6). A first sealing ring (8) is fixedly connected to the surface of the internal threaded ring (7). A hexagonal waterproof plate (9) is fixedly connected to the surface of the first sealing ring (8). A second sealing ring (10) is fixedly connected to the inner wall of the hexagonal waterproof plate (9). A scraper ring (11) is fixedly connected to one end of the hexagonal waterproof plate (9). A trapezoidal sliding groove (12) is opened inside the positioning ring (2). A trapezoidal protective ring (13) is slidably connected to the inner wall of the trapezoidal sliding groove (12).
2. The waterproof and sealed AC charging gun connector according to claim 1, characterized in that: The positioning ring (2) is located outside the wiring socket (3).
3. The waterproof and sealed AC charging gun connector according to claim 1, characterized in that: The internal threaded ring (7) is threadedly connected to the positioning ring (2).
4. The waterproof and sealed AC charging gun connector according to claim 1, characterized in that: The first sealing ring (8) slides on the surface of the positioning ring (2).
5. A waterproof and sealed AC charging gun connector according to claim 1, characterized in that: The second sealing ring (10) slides on the surface of the positioning ring (2).
6. A waterproof and sealed AC charging gun connector according to claim 1, characterized in that: The scraper ring (11) is in contact with the surface of the positioning ring (2).
7. A waterproof and sealed AC charging gun connector according to claim 1, characterized in that: One end of the trapezoidal protective ring (13) is fixedly connected to the other end of the hexagonal waterproof plate (9).