Direct current charging plug for electric vehicle

By introducing a protective component consisting of a closed spring and a sealing gasket into the DC charging plug for electric vehicles, the problem of easy damage to the plug output end is solved, achieving higher safety and reliability and ensuring stability for long-term use.

CN224006221UActive Publication Date: 2026-03-17MAMBA ZHILIAN (SHENZHEN) TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-02
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

The existing DC charging plugs for electric vehicles lack shielding and protection, making the output end susceptible to contact with debris or water, which poses a risk of short circuit and fire, affecting safety and long-term use.

Method used

A protective assembly including a sealing spring, a sealing frame, and an insertion sealing gasket is designed. The sealing spring pushes the insertion sealing gasket to move, sealing the plug output end and preventing debris or rainwater from entering, thus ensuring safety.

Benefits of technology

It improves the safety of the plug, prevents debris or rainwater from entering, ensures that the normal installation and use of the plug body is not affected during use, and enhances the reliability of long-term use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a direct current charging plug for an electric vehicle, which belongs to the technical field of charging plugs, and comprises a plug body, and the outer wall of one side of the plug body is fixedly connected with a plug output end; the protection assembly comprises two movable parts, a sealing frame and an insertion sealing gasket, each movable part comprises a movable frame, an extended clamping jaw and a mounting base, the movable frames are arranged on the outer wall of one side of the plug body in a sliding mode, the extended clamping jaws are fixedly connected to the outer walls of one sides of the movable frames, and the extended clamping jaws are matched with the plug body. According to the direct-current charging plug for the electric vehicle, the plugging sealing gasket is pushed to move through the sealing spring, the output end of the plug is sealed, sundries or rainwater is prevented from entering the plug, the safety of the plug is improved, when the plug is used, the sealing spring pushes the sealing frame to make contact with the mounting base, use of the plug body is not affected, and long-term use is facilitated.
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Description

Technical Field

[0001] This utility model relates to the field of charging plug technology, and more specifically, to a DC charging plug for electric vehicles. Background Technology

[0002] Electric vehicles are vehicles that use electricity instead of traditional fuel, and are mainly divided into pure electric vehicles, hybrid vehicles, and fuel cell vehicles.

[0003] The charging plug (charging interface) of an electric vehicle is a key component that connects the vehicle to the charging equipment. Different regions, vehicle models, and charging power standards correspond to different plug types. The mainstream electric vehicle charging plugs are divided into AC charging plugs and DC charging plugs.

[0004] Existing electric vehicles require the DC charging plug to be placed or hung directly in the open after passing through it. There is a lack of shielding and protection measures for the output end of the DC charging plug, which makes it easy for the output end of the DC charging plug to come into contact with external debris, dust or water, resulting in short circuits and fires, which is not conducive to long-term use. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a DC charging plug for electric vehicles. By using a sealing spring to push the insertion sealing gasket to move, the output end of the plug is sealed, preventing debris or rainwater from entering and improving its safety. During use, the sealing spring will push the sealing frame and the mounting base to contact, without affecting the use of the plug body. This results in higher safety during use and facilitates long-term use.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution:

[0009] A DC charging plug for electric vehicles includes: a plug body with a plug output terminal fixedly connected to one outer wall of the plug body; and a protective assembly, the protective assembly including: two movable parts, a sealing frame, and an insertion sealing gasket. Each of the two movable parts includes: a movable frame, an extension claw, and a mounting base. The movable frame is slidably disposed on one outer wall of the plug body. The extension claw is fixedly connected to one outer wall of the movable frame and engages with the plug body. The mounting base is fixedly connected to one outer wall of the movable frame, and a limiting rod is fixedly connected to one outer wall of the mounting base. The sealing frame is slidably sleeved between the outer walls of the two limiting rods. The insertion sealing gasket is fixedly connected to one outer wall of the sealing frame and engages with the plug output terminal.

[0010] As a preferred embodiment of this utility model, one end of each of the two limiting rods is fixedly connected to an anti-detachment circular plate, and a closing spring is fixedly connected to one outer wall of each of the two anti-detachment circular plates.

[0011] As a preferred embodiment of this utility model, the two closed springs are respectively sleeved on the outer wall of the corresponding limiting rod, and one end of each of the two closed springs is fixedly connected to one side of the outer wall of the closed frame.

[0012] As a preferred embodiment of this utility model, two guide grooves are provided on one side of the outer wall of the plug body, and both guide grooves are slidably engaged with the movable frame.

[0013] As a preferred embodiment of this utility model, two positioning strips are fixedly connected to one side of the outer wall of the plug body, and the two positioning strips respectively cooperate with the corresponding movable frame.

[0014] As a preferred embodiment of this utility model, the outer walls on both sides of the enclosed frame are provided with edge-assisted extension.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, this utility model provides a DC charging plug for electric vehicles, which has the following advantages:

[0017] The DC charging plug for this electric vehicle uses a sealing spring to push the insertion sealing gasket to move and seal the output end of the plug, preventing debris or rainwater from entering and improving its safety. During use, the sealing spring will push the sealing frame and the mounting base to contact, without affecting the use of the plug itself, making it safer to use and conducive to long-term use. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a rear-view perspective view of the present invention;

[0020] Figure 3 This is a partial perspective view of the present utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Plug body; 2. Plug output end; 3. Guide groove; 4. Positioning strip; 5. Movable bracket; 6. Extension claw; 7. Mounting base; 8. Enclosure bracket; 9. Enclosure spring; 10. Anti-detachment round plate; 11. Insert sealing gasket; 12. Edge assist extension. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, 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 scope of protection of the present utility model. Example:

[0024] Please see Figure 1-3 A DC charging plug for electric vehicles includes: a plug body 1, with a plug output end 2 fixedly connected to one outer wall of the plug body 1; and a protective assembly, which includes: two movable parts, a sealing frame 8, and an insertion sealing gasket 11. Each of the two movable parts includes: a movable frame 5, an extension claw 6, and a mounting base 7. The movable frame 5 is slidably disposed on one outer wall of the plug body 1, the extension claw 6 is fixedly connected to one outer wall of the movable frame 5 and cooperates with the plug body 1, the mounting base 7 is fixedly connected to one outer wall of the movable frame 5, and a limiting rod is fixedly connected to one outer wall of the mounting base 7, the sealing frame 8 is slidably sleeved between the outer walls of the two limiting rods, and the insertion sealing gasket 11 is fixedly connected to one outer wall of the sealing frame 8 and cooperates with the plug output end 2.

[0025] In a specific embodiment of this utility model, the plug body 1 and the plug output end 2 achieve the effect of a DC charging plug. When not charging, the movable frame 5 is moved along the guide groove 3 and moved to one end, where the position of the inserted sealing gasket 11 corresponds to that of the plug output end 2. At this time, the sealing spring 9 will push the sealing frame 8 and the inserted sealing gasket 11 to move and seal the plug output end 2, preventing debris or rainwater from entering and improving its safety. When in use, the sealing frame 8 is taken out through the edge assist extension 12, and the movable frame 5 is moved along the guide groove 3. Then, the edge assist extension 12 is released. At this time, the sealing spring 9 will push the sealing frame 8 to contact the mounting base 7, so that it will not affect the installation and use of the plug body 1. The safety during use is higher, which is conducive to long-term use.

[0026] Specifically, one end of each of the two limiting rods is fixedly connected to an anti-detachment circular plate 10, and a closing spring 9 is fixedly connected to one side of the outer wall of each of the two anti-detachment circular plates 10.

[0027] In this embodiment, the closed spring 9 is installed through the anti-detachment circular plate 10, enabling it to be pushed.

[0028] Specifically, two closed springs 9 are respectively sleeved on the outer wall of the corresponding limiting rod, and one end of each closed spring 9 is fixedly connected to one side of the outer wall of the closed frame 8.

[0029] In this embodiment, the sealing operation is performed by moving the sealing frame 8 through the sealing spring 9.

[0030] Specifically, two guide grooves 3 are provided on one side of the outer wall of the plug body 1, and both guide grooves 3 are slidably engaged with the movable frame 5.

[0031] In this embodiment, the movable frame 5 is set through the guide groove 3, and the movement path of the movable frame 5 is restricted.

[0032] Specifically, two positioning strips 4 are fixedly connected to one side of the outer wall of the plug body 1, and the two positioning strips 4 cooperate with the corresponding movable frame 5 respectively.

[0033] In this embodiment, the movable frame 5 is fixed by the positioning strip 4 to restrict its movement path and prevent it from falling off.

[0034] Specifically, edge-assisted extensions 12 are provided on both outer walls of the closed frame 8.

[0035] In this embodiment, the edge-assisted extension 12 assists the user in operating the enclosed frame 8.

[0036] Working principle: The plug body 1 and plug output end 2 achieve the effect of DC charging plug. When not charging, the movable frame 5 moves along the guide groove 3 and moves to one end, with the sealing gasket 11 inserted and the plug output end 2 aligned. At this time, the sealing spring 9 will push the sealing frame 8 and the inserted sealing gasket 11 to move and seal the plug output end 2, preventing debris or rainwater from entering and improving its safety. When in use, the sealing frame 8 is taken out through the edge assist extension 12, and the movable frame 5 is moved along the guide groove 3. Then, the edge assist extension 12 is released. At this time, the sealing spring 9 will push the sealing frame 8 to contact the mounting base 7, so that it will not affect the installation and use of the plug body 1. The safety during use is higher, which is conducive to long-term use.

[0037] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A DC charging plug for electric vehicles, characterized in that The utility model relates to a plug body (1) one side outer wall fixedly connected with plug output end (2) and a protection assembly, the protection assembly includes two movable components, closed frame (8) and insert sealing pad (11), two movable components all include movable frame (5), extension clamping jaw (6) and mounting seat (7), movable frame (5) is arranged in the sliding mode in the one side outer wall of plug body (1), extension clamping jaw (6) is fixedly connected in the one side outer wall of movable frame (5), extension clamping jaw (6) and plug body (1) cooperate, mounting seat (7) is fixedly connected in the one side outer wall of movable frame (5), the one side outer wall of mounting seat (7) is fixedly connected with the limiting rod, closed frame (8) is sleeved between the outer wall of two limiting rods and slides, insert sealing pad (11) is fixedly connected in the one side outer wall of closed frame (8), and insert sealing pad (11) and plug output end (2) cooperate. One end of two limiting rods is fixedly connected with anti -drop round plate (10), and the one side outer wall of two anti -drop round plate (10) is fixedly connected with closed spring (9). Two closed springs (9) are respectively sleeved on the outer wall of corresponding limiting rod, and one end of two closed springs (9) is fixedly connected with the one side outer wall of closed frame (8). The one side outer wall of plug body (1) is provided with two guide grooves (3), and two guide grooves (3) are in sliding fit with movable frame (5).

2. The DC charging plug for electric vehicles of claim 1, wherein: The one side outer wall of plug body (1) is fixedly connected with two positioning strips (4), and two positioning strips (4) are respectively matched with corresponding movable frame (5).

3. The DC charging plug for electric vehicles of claim 2, wherein: The both side outer walls of closed frame (8) are extended and provided with edge auxiliary extension (12).

4. The DC charging plug for electric vehicles of claim 3, wherein: ​ 5. The DC charging plug for electric vehicles of claim 4, wherein: ​ 6. The DC charging plug for electric vehicles of claim 5, wherein: ​