Liquid-cooled charging gun anti-pulling structure

By designing a spring-driven snap-fit ​​structure and key operation on the liquid-cooled charging gun, the problem of the liquid-cooled charging gun being easily pulled out is solved, realizing the anti-pull-out function and convenient removal during the charging process, ensuring normal charging.

CN224355584UActive Publication Date: 2026-06-12FUJIAN TONGYUZHILIAN NEW ENERGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FUJIAN TONGYUZHILIAN NEW ENERGY CO LTD
Filing Date
2025-08-02
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing liquid-cooled charging guns lack anti-unplugging features, making them easy for others to pull out during charging, thus affecting the normal charging process.

Method used

The elastic force of the spring moves the movable seat upward. The engagement of the snap connector and the snap hole ensures that the liquid-cooled charging gun body cannot be pulled out during charging. It can be easily pulled out by key operation.

🎯Benefits of technology

It achieves the anti-unplugging function of liquid-cooled charging gun during the charging process, ensuring normal charging of vehicles, and is simple and convenient to operate.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of liquid cooling charging gun anti-pulling structures, belong to liquid cooling charging gun technical field, a kind of liquid cooling charging gun anti-pulling structure, including liquid cooling charging gun main body, fixed on the liquid cooling charging gun main body on charging plug and with the charging plug plug-pull connection's charging socket, the outer wall part of the liquid cooling charging gun main body close to the charging plug is equipped with shell, the front end of the shell is longitudinally provided with guide hole, the inner wall of the end of the shell is longitudinally provided with guide slot, the inboard of the shell is equipped with with the sliding connection of the guide hole movable seat, the front end of the movable seat is integrally formed with the joint of the shell outside, the end of the shell is equipped with with the sliding connection of the guide slot guide pillar head, it utilizes the elastic force of spring and makes movable seat move upwards, complete the clamping between joint and clamping hole, so that liquid cooling charging gun main body cannot be pulled out in the process of charging, guarantee the normal charging of vehicle.
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Description

Technical Field

[0001] This utility model relates to the field of liquid-cooled charging gun technology, and more specifically, to a liquid-cooled charging gun anti-pull-out structure. Background Technology

[0002] A liquid-cooled charging gun is a charging device that uses liquid cooling technology. By adding coolant to the charging gun cables, it effectively dissipates the heat generated during charging, thereby improving charging power and efficiency. This technology is particularly suitable for high-power charging scenarios, such as public charging stations and fast charging applications.

[0003] Existing liquid-cooled charging guns lack anti-unplugging functionality, which allows them to be easily unplugged by others during charging, thus affecting normal vehicle charging. To effectively prevent unplugging of the liquid-cooled charging gun during charging, we propose an anti-unplugging structure to address the aforementioned problems. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a liquid-cooled charging gun anti-pull-out structure. It utilizes the elastic force of a spring to move the movable seat upward, completing the engagement between the locking connector and the locking hole, so that the liquid-cooled charging gun body cannot be pulled out during the charging process, ensuring normal charging of the vehicle.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A liquid-cooled charging gun anti-pull-out structure includes a liquid-cooled charging gun body, a charging plug fixed on the liquid-cooled charging gun body, and a charging socket that is plugged and unplugged into the charging plug. A housing is installed on the outer wall of the liquid-cooled charging gun body near the charging plug. A guide hole is longitudinally opened at the front end of the housing, and a guide groove is longitudinally opened on the inner wall of the end of the housing.

[0009] The inner side of the housing is equipped with a movable seat that is slidably connected to the guide hole. The front end of the movable seat is integrally formed with a snap connector located on the outside of the housing. The end of the housing is equipped with a guide post head that is slidably connected to the guide groove.

[0010] A spring is installed below the movable seat;

[0011] The top opening of the housing is equipped with a cover plate, the cover plate has an assembly opening, and a lock cylinder is installed inside the assembly opening. The lock cylinder has a lock hole, and a key is inserted and removed into the inside of the lock hole.

[0012] The charging plug has a snap-fit ​​hole that engages with the snap-fit ​​connector.

[0013] Furthermore, the connector is provided with a bevel.

[0014] Furthermore, multiple springs are equidistantly arranged, with one end of each spring connected to the movable seat and the other end of each spring connected to the bottom wall of the housing.

[0015] Furthermore, a through hole is provided at the top of the key.

[0016] Furthermore, the length of the key insertion end is greater than the height of the housing.

[0017] Furthermore, the snap-fit ​​hole is L-shaped, and the right-angled surface of the snap-fit ​​hole abuts against the right-angled surface of the snap-fit ​​connector.

[0018] Furthermore, the entire movable seat is made of stainless steel.

[0019] 3. Beneficial effects

[0020] Compared with existing technologies, the advantages of this utility model are:

[0021] (1) In this solution, when the charging plug on the liquid-cooled charging gun body is connected to the charging socket, the inclined surface on the snap-fit ​​connector abuts against the upper edge of the port on the snap-fit ​​hole, thereby causing the movable seat to move downward with the guide hole and the guide post head to move downward with the guide groove, thus ensuring the stability of the movable seat during the movement and compressing and deforming the spring. After the charging plug and the charging socket are fully connected, the snap-fit ​​connector is fully inserted into the inner cavity of the snap-fit ​​hole. Finally, the elastic force of the spring is used to move the movable seat upward, completing the engagement between the snap-fit ​​connector and the snap-fit ​​hole, so that the liquid-cooled charging gun body cannot be pulled out during the charging process, ensuring normal charging of the vehicle.

[0022] (2) In this scheme, after charging is completed, the key is inserted into the lock hole set on the lock cylinder so that the key passes through the cover plate and abuts against the movable seat. The movable seat is pressed down by the key so that the right angle surface of the snap connector is separated from the right angle surface of the snap hole. Then the liquid-cooled charging gun body is pulled out, which is very convenient to operate. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the main structure of the liquid-cooled charging gun of this utility model;

[0025] Figure 3This is a front view schematic diagram of the shell of this utility model;

[0026] Figure 4 This is a cross-sectional view of the shell AA portion of this utility model;

[0027] Figure 5 This is a schematic diagram of the charging socket structure of this utility model;

[0028] Figure 6 This is a cross-sectional view of the BB portion of the charging socket of this utility model.

[0029] Explanation of the labels in the diagram:

[0030] 1. Liquid-cooled charging gun body; 2. Charging plug; 3. Charging socket; 4. Housing; 5. Guide hole; 6. Guide groove; 7. Movable seat; 8. Snap connector; 9. Guide post head; 10. Spring; 11. Cover plate; 12. Lock cylinder; 13. Lock hole; 14. Key; 15. Snap connector hole. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0032] Example:

[0033] Please see Figure 1-6 A liquid-cooled charging gun anti-pull-out structure includes a liquid-cooled charging gun body 1, a charging plug 2 fixed on the liquid-cooled charging gun body 1, and a charging socket 3 that is plugged and unplugged into the charging plug 2. A housing 4 is installed on the outer wall of the liquid-cooled charging gun body 1 near the charging plug 2. A guide hole 5 is longitudinally opened at the front end of the housing 4, and a guide groove 6 is longitudinally opened on the inner wall of the end of the housing 4.

[0034] The inner side of the housing 4 is equipped with a movable seat 7 that is slidably connected to the guide hole 5. The front end of the movable seat 7 is integrally formed with a snap connector 8 located on the outside of the housing 4. The snap connector 8 is provided with a bevel. The end of the housing 4 is equipped with a guide column head 9 that is slidably connected to the guide groove 6.

[0035] A spring 10 is installed below the movable seat 7;

[0036] A cover plate 11 is installed at the top opening of the housing 4. An assembly opening is provided on the cover plate 11, and a lock cylinder 12 is installed inside the assembly opening. A lock hole 13 is provided on the lock cylinder 12, and a key 14 is inserted and removed from the inside of the lock hole 13.

[0037] The charging plug 2 has a snap-fit ​​hole 15 that engages with the snap-fit ​​connector 8;

[0038] It should be noted that when the liquid-cooled charging gun anti-pull-out structure is in use, when the charging plug 2 on the liquid-cooled charging gun body 1 is connected to the charging socket 3, the inclined surface on the locking connector 8 simultaneously abuts against the upper edge of the port on the locking hole 15. This causes the movable seat 7 to move downward with the guide hole 5, while the guide column head 9 moves downward with the guide groove 6, thus ensuring the stability of the movable seat 7 during the movement and compressing and deforming the spring 10. After the charging plug 2 and the charging socket 3 are fully connected, the locking connector 8 is fully inserted into the inner cavity of the locking hole 15. Finally, the elastic force of the spring 10 causes the movable seat 7 to move upward, completing the engagement between the locking connector 8 and the locking hole 15, so that the liquid-cooled charging gun body 1 cannot be pulled out during the charging process, ensuring normal charging of the vehicle.

[0039] After charging is complete, the key 14 is inserted into the lock hole 13 on the lock cylinder 12, so that the key 14 passes through the cover plate 11 and abuts against the movable seat 7. The movable seat 7 is pressed down by the key 14, so that the right angle surface of the snap connector 8 is separated from the right angle surface of the snap hole 15. Then the liquid-cooled charging gun body 1 is pulled out. The operation is very convenient.

[0040] like Figure 4 As shown, multiple springs 10 are equidistantly arranged. One end of each spring 10 is connected to the movable seat 7, and the other end of each spring 10 is connected to the bottom wall of the housing 4.

[0041] It should be noted that the elastic force of the spring 10 is used to move the movable seat 7 upward, thereby completing the engagement between the snap connector 8 and the snap hole 15, so that the liquid-cooled charging gun body 1 cannot be pulled out during the charging process.

[0042] like Figure 4 As shown, a through hole is provided at the top of the key 14;

[0043] It should be noted that the key 14 is hung on a key ring by using the through hole provided on the key 14 to prevent the key 14 from being lost.

[0044] like Figure 4 , Figure 6 As shown, the length of the key 14 insertion end is greater than the height of the housing 4, the snap-fit ​​hole 15 is set in an L-shaped structure, and the right angle surface of the snap-fit ​​hole 15 abuts against the right angle surface of the snap-fit ​​connector 8.

[0045] It should be noted that by pressing down the movable seat 7 with key 14, the right angle surface of the card connector 8 is separated from the right angle surface of the card hole 15, and then the liquid-cooled charging gun body 1 is pulled out.

[0046] like Figure 4As shown, the movable seat 7 is made entirely of stainless steel;

[0047] It should be noted that the structural strength and durability of the movable seat 7 have been guaranteed.

[0048] In use: When the charging plug 2 on the liquid-cooled charging gun body 1 is connected to the charging socket 3, the inclined surface on the snap connector 8 simultaneously abuts against the upper edge of the port on the snap hole 15, thereby causing the movable seat 7 to move downward with the guide hole 5, while the guide column head 9 moves downward with the guide groove 6, thus ensuring the stability of the movable seat 7 during the movement and compressing and deforming the spring 10. After the charging plug 2 and the charging socket 3 are fully connected, the snap connector 8 is fully inserted into the inner cavity of the snap hole 15. Finally, the elastic force of the spring 10 causes the movable seat 7 to move upward, completing the engagement between the snap connector 8 and the snap hole 15, so that the liquid-cooled charging gun body 1 cannot be pulled out during the charging process, ensuring normal charging of the vehicle;

[0049] After charging is complete, insert the key 14 into the lock hole 13 on the lock cylinder 12 so that the key 14 passes through the cover plate 11 and abuts against the movable seat 7. Use the key 14 to press down the movable seat 7 so that the right angle surface of the snap connector 8 separates from the right angle surface of the snap hole 15. Then pull out the liquid-cooled charging gun body 1.

[0050] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A liquid-cooled charging gun anti-unplugging structure, comprising a liquid-cooled charging gun body (1), a charging plug (2) fixed on the liquid-cooled charging gun body (1), and a charging socket (3) pluggably connected to the charging plug (2), characterized in that: The liquid-cooled charging gun body (1) has a housing (4) installed on the outer wall near the charging plug (2). The front end of the housing (4) has a guide hole (5) and the inner wall of the end of the housing (4) has a guide groove (6) in the longitudinal direction. The inner side of the housing (4) is equipped with a movable seat (7) that is slidably connected to the guide hole (5). The front end of the movable seat (7) is integrally formed with a snap connector (8) located on the outside of the housing (4). The end of the housing (4) is equipped with a guide column head (9) that is slidably connected to the guide groove (6). A spring (10) is installed below the movable seat (7); The top opening of the housing (4) is provided with a cover plate (11), the cover plate (11) is provided with an assembly opening, and a lock cylinder (12) is provided on the inner side of the assembly opening. The lock cylinder (12) is provided with a lock hole (13), and a key (14) is inserted and removed from the inner side of the lock hole (13). The charging plug (2) has a snap-fit ​​hole (15) that engages with the snap-fit ​​connector (8).

2. The anti-pumping structure for a liquid-cooled charging gun according to claim 1, characterized in that: The snap-fit ​​connector (8) has a bevel.

3. The anti-pumping structure for a liquid-cooled charging gun according to claim 1, characterized in that: Multiple springs (10) are equidistantly arranged. One end of each spring (10) is connected to the movable seat (7), and the other end of each spring (10) is connected to the bottom wall of the housing (4).

4. The anti-pumping structure for a liquid-cooled charging gun according to claim 1, characterized in that: The key (14) has a through hole at its top.

5. The anti-pumping structure for a liquid-cooled charging gun according to claim 1, characterized in that: The length of the key (14) insertion end is greater than the height of the housing (4).

6. The anti-pumping structure for a liquid-cooled charging gun according to claim 1, characterized in that: The snap-fit ​​hole (15) is L-shaped, and the right-angled surface of the snap-fit ​​hole (15) abuts against the right-angled surface of the snap-fit ​​connector (8).

7. The anti-pumping structure for a liquid-cooled charging gun according to claim 1, characterized in that: The movable seat (7) is made entirely of stainless steel.