Charging head of electric automobile

Abstract

The utility model provides an electric automobile charging head which comprises a shell, a plug part is installed in an inner cavity of the shell, the plug part is in sliding connection with the inner wall of the shell, the tail end of the plug part is electrically connected with a charging cable, a cover part is installed on the peripheral face of the shell, and the cover part is in sliding connection with the outer wall of the shell. When the electric automobile is not charged, the plug part is located in the inner cavity of the shell, and the opening end of the inner cavity of the shell is provided with the sealing piece which can be flexibly opened and closed, so that external dust and rainwater are difficult to enter the inner cavity of the shell and are adhered to the plug part; when the electric automobile needs to be charged, the plug part is driven by the cover part to extend outwards from the inner cavity of the shell, the extended plug part is inserted into the charging port of the electric automobile, and external dust and impurities are difficult to enter the plug part; therefore, the electric automobile charging head with the telescopic structure can well prevent external dust, impurities and rainwater from adhering to the plug part, and the normal use of the automobile charging head is effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of plug technology, specifically to an electric vehicle charging head. Background Technology

[0002] With the development of electric vehicle technology, fast charging is now possible to shorten charging time. During charging, users insert the charging head into a charging station, which continuously charges the electric vehicle's battery. After charging is complete, the charging head needs to be removed from the charging station. To prevent external dust, impurities, or moisture from entering the charging head, existing car charging heads are generally equipped with dust caps. After charging, users attach the dust cap to the charging head, providing a shield to the end. However, during charging, the dust cap hangs freely at the bottom of the charging head, and since charging typically takes several hours, dust and other impurities easily accumulate inside. Furthermore, in rainy weather, rainwater may also seep into the inside of the dust cap. When the user attaches the dust cap after charging, the dust, impurities, or rainwater adhering to the cap can enter the charging head, potentially damaging electrical components, causing short circuits, and affecting the normal operation of the charging head. Utility Model Content

[0003] In view of the defects existing in the prior art, the purpose of this utility model is to provide an electric vehicle charging head to solve the problem that existing car charging heads equipped with dust caps may allow dust, impurities or rainwater that may adhere to the dust cap to enter the car charging head, thus affecting the normal use of the car charging head.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This application provides an electric vehicle charger, including a housing, a plug portion installed in the inner cavity of the housing, the plug portion being slidably connected to the inner wall of the housing, the tail end of the plug portion being electrically connected to a charging cable, a cover portion installed on the outer peripheral surface of the housing, the cover portion being slidably connected to the outer wall of the housing, the cover portion being snapped into the plug portion, the cover portion being able to synchronously drive the plug portion to extend and retract along the inner cavity of the housing, and a sealing element that can be softly opened and closed being formed at one end of the inner cavity opening of the housing.

[0006] Furthermore, a rubber seal is fixedly installed at the front end face of the cover, and the rubber seal is formed with a through hole to accommodate the outer shell, the inner wall of the through hole being tightly fitted to the outer peripheral surface of the outer shell.

[0007] Furthermore, a recessed locking groove is formed on the outer rear surface of the plug portion, and a locking piece is formed on the inner rear wall of the cover portion that engages with the locking groove.

[0008] Furthermore, the seal includes a first seal and a second seal, the first seal being formed at the front end of the inner cavity of the housing, and the second seal being formed in the inner cavity of the housing at the rear end of the first seal.

[0009] Furthermore, an internal thread is formed on the inner wall of the inner cavity of the outer shell along its length direction, and an external thread that engages with the internal thread is formed on the outer surface of the plug portion, and the cover portion can be rotatably connected relative to the outer wall of the outer shell.

[0010] Furthermore, a receiving groove is formed at the front end of the inner wall of the cover, and a compression spring is installed in the receiving groove, the compression spring being wound around the outer surface of the plug.

[0011] Furthermore, the plug portion is connected to the charging cable via a retractable connector.

[0012] The beneficial effects of this utility model are as follows:

[0013] By adopting the above-mentioned electric vehicle charging head, when the electric vehicle is not charging, the plug is located in the inner cavity of the outer shell, and one end of the inner cavity of the outer shell is provided with a seal that can be softly opened and closed. In this way, it is difficult for external dust and rainwater to enter the inner cavity of the outer shell and adhere to the plug. When the electric vehicle needs to be charged, the plug is extended outward from the inner cavity of the outer shell by the cover, and the extended plug is inserted into the charging port of the electric vehicle. Similarly, it is difficult for external dust and impurities to enter the plug. Therefore, this kind of retractable structure of the electric vehicle charging head can effectively prevent external dust, impurities and rainwater from adhering to the plug, and effectively ensure the normal use of the car charging head. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an electric vehicle charging head in an embodiment of this application.

[0015] Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of the electric vehicle charging head in the embodiments of this application.

[0016] In the picture:

[0017] 10-Outer shell, 11-Connecting part, 12-Handle part, 13-Slide groove, 14-Internal thread;

[0018] 20-Cover, 21-Locking piece, 22-Receiving groove

[0019] 30 - Plug part, 31 - External thread, 32 - Locking groove;

[0020] 40 - Connector;

[0021] 50 - Compression spring;

[0022] 60 - Seal, 61 - First seal, 62 - Second seal;

[0023] 70 - Rubber seals;

[0024] 80-Charging cable. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] See appendix Figure 1 To be continued Figure 2 As shown, this embodiment provides an electric vehicle charger, including a housing 10. The housing 10 is a housing device that is connected to the charging cable 80 of the electric vehicle charger. The front end of the housing 10 is a connecting part 11 for fitting into the charging port of the electric vehicle, and the rear end of the housing 10 is a handle part 12 for easy gripping by the user. The user can easily insert the electric vehicle charger into the charging port of the electric vehicle or pull it out from the charging port of the electric vehicle by gripping the handle part 12.

[0027] See attached document Figure 2 As shown, a plug portion 30 is installed in the inner cavity of the housing 10. The tail end of the plug portion 30 is connected to the charging cable 80 through a retractable connector 40. In this way, external current can enter the plug portion 30 through the charging cable 80 and charge the charging battery in the electric vehicle through the plug portion 30 and the charging port of the electric vehicle.

[0028] See attached document Figure 1 and attached Figure 2 As shown, in this embodiment, the plug portion 30 is retractably installed in the inner cavity of the housing 10. That is, when the electric vehicle needs to be charged, the plug portion 30, which is hidden in the inner cavity of the housing 10, can move outward and extend. When the plug portion 30 moves to the maximum outward distance, it stops moving, and the plug portion 30 is in the charging working position at this time. Conversely, when the charging is completed, the plug portion 30 moves in the opposite direction along the inner cavity of the housing 10 and retracts into the inner cavity of the housing 10. Similarly, when the plug portion 30 retracts to the maximum retraction distance in the inner cavity of the housing 10, it stops moving, and the plug portion 30 is in the stored and hidden position at this time.

[0029] Continue to refer to the appendix Figure 1 and attached Figure 2As shown, the forward and backward extension and retraction of the plug portion 30 is driven by the cover portion 20 installed on the housing 10. The cover portion 20 is a long cylindrical structure that fits onto the outer circumferential surface of the housing 10, and is installed at the front end of the housing 10. The cover portion 20 can move forward and backward along the axial direction of the housing 10, that is, it moves forward and backward parallel to the extension and retraction direction of the plug portion 30; at the same time, the cover portion 20 can rotate in the radial direction of the housing 10. The cover portion 20 and the plug portion 30 are locked together, so that the cover portion 20 can synchronously drive the plug portion 30 to extend and retract along the inner cavity of the housing 10, so as to realize the outward extension or inward retraction and concealment of the plug portion 30.

[0030] In some embodiments, a recessed locking groove 32 is formed on the outer rear surface of the plug portion 30, and a locking piece 21 is formed on the inner rear wall of the cover portion 20 to engage with the locking groove 32. Correspondingly, a sliding groove 13 is formed on the outer wall of the housing 10, and the sliding groove 13 communicates with the locking groove 32. In this way, the locking piece 21 on the cover portion 20 can be inserted into the locking groove 32 through the sliding groove 13. By locking the locking piece 21 in the locking groove 32, when the user rotates the cover portion 20, the cover portion 20 can simultaneously drive the plug portion 30 to rotate in the inner cavity of the housing 10.

[0031] See attached document Figure 2 As shown, in this embodiment, the reason for using the rotational movement of the cover 20 to drive the extension and retraction of the plug 30 is to ensure the accuracy of the plug 30's position during movement. For example, when the plug 30 extends outward and is inserted into the charging port of the electric vehicle, the plug 30 will not retract into the inner cavity of the outer shell 10 due to external pressure. To address this, in this embodiment, an internal thread 14 is formed along the length of the inner wall of the inner cavity of the outer shell 10, and an external thread 31 that meshes with the internal thread 14 is formed on the outer surface of the plug 30. The cover 20 can be rotatably connected to the outer wall of the outer shell 10.

[0032] See attached document Figure 2 As shown, to prevent external dust, impurities, or rainwater from entering the inner cavity of the housing and adhering to the plug portion 30, a seal 60 that can be softly opened and closed is formed at one end of the inner cavity opening of the housing 10. When the plug portion 30 extends outward, it pushes open the seal 60 and extends outward; when the plug portion 30 retracts inward, the seal 60 automatically retracts and resets, blocking one end of the inner cavity opening of the housing 10. In some embodiments, the seal 60 includes a first seal 61 and a second seal 62. The first seal 61 is formed at the front end of the inner cavity of the housing 10, and the second seal 62 is formed in the inner cavity of the housing 10 at the rear end of the first seal 61.

[0033] See attached document Figure 2As shown, a rubber seal 70 is fixedly installed at the front end face of the cover 20. The rubber seal 70 is formed with a through hole to accommodate the outer shell 10, and the inner wall of the through hole is tightly fitted to the outer peripheral surface of the outer shell 10. During the rotation and movement of the cover 20 along the outer peripheral surface of the outer shell 10, the rubber seal 70 is always in close contact with the outer wall of the outer shell 10 to prevent external dust and other impurities from entering the inner cavity of the cover 20.

[0034] To prevent the cover 20 from sliding off the outer periphery of the outer casing 10 during forward movement, a receiving groove 22 is formed at the front end of the inner wall of the cover 20. A compression spring 50 is installed in the receiving groove 22. The compression spring 50 is wound around the outer surface of the plug part 30, and one end of the compression spring 50 is fixedly attached to the outer wall of the outer casing 10. When the cover 20 moves forward along the outer wall of the outer casing 10, the receiving groove 22 of the cover 20 will gradually compress the compression spring 50. When the compression spring 50 reaches its maximum compression displacement, since one end of the compression spring 50 is fixed to the outer wall of the outer casing 10, the compression spring 50 can no longer compress. At this time, the compression spring 50 also prevents the cover 20 from continuing to move outward, thereby avoiding the phenomenon that the cover 20 slides off the outer wall of the outer casing 10 during movement.

[0035] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An electric vehicle charging head, characterized in that, The device includes a housing, in which a plug is installed within the inner cavity of the housing. The plug is slidably connected to the inner wall of the housing, and the tail end of the plug is electrically connected to a charging cable. A cover is installed on the outer circumferential surface of the housing, and the cover is slidably connected to the outer wall of the housing. The cover is snapped into the plug, and the cover can synchronously drive the plug to extend and retract along the inner cavity of the housing. One end of the opening of the inner cavity of the housing has a seal that can be softly opened and closed.

2. The electric vehicle charging head of claim 1, wherein, A rubber seal is fixedly installed at the front end of the cover. The rubber seal is formed with a through hole to accommodate the outer shell. The inner wall of the through hole is tightly fitted to the outer peripheral surface of the outer shell.

3. An electric vehicle charging head according to claim 1 or 2, characterized in that, The outer rear surface of the plug portion has a recessed locking groove, and the inner rear wall of the cover portion has a locking piece that engages with the locking groove.

4. The electric vehicle charging head of claim 1, wherein, The sealing element includes a first sealing element and a second sealing element, wherein the first sealing element is formed at the front end of the inner cavity of the housing, and the second sealing element is formed in the inner cavity of the housing at the rear end of the first sealing element.

5. The electric vehicle charging head of claim 1, wherein, An internal thread is formed on the inner wall of the inner cavity of the housing along its length direction, and an external thread is formed on the outer surface of the plug portion that meshes with the internal thread. The cover portion can be rotatably connected relative to the outer wall of the housing.

6. The electric vehicle charging head of claim 5, wherein, A receiving groove is formed at the front end of the inner wall of the cover, and a compression spring is installed in the receiving groove. The compression spring is wound around the outer surface of the plug.

7. The electric vehicle charging head of claim 1, wherein, The plug is connected to the charging cable via a retractable connector.

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