A sealed waterproof charging gun

Abstract

The application relates to the field of charging guns, in particular to a sealed and waterproof charging gun, which comprises a charging gun body and a cable, the cable is installed on the charging gun body, a plug block is sleeved on the cable, the plug block is connected with the charging gun body, a fixing assembly is arranged between the plug block and the charging gun body, detachable sealing assemblies are arranged at both ends of the plug block, the plug block is connected with the plug groove through the fixing bolt, preliminary sealing is formed in combination with the sealing gasket one; then the plug block is connected with the threaded cylinder one and the threaded cylinder two through threads, the multiple sealing structures of the sealing ring, the sealing gasket two, the inclined extrusion groove and the sealing gasket three are matched, a multidimensional and dead-angle-free sealing system is formed from the connecting part of the plug block and the charging gun body to both ends of the cable passing through the plug block, the problem that sealing is not perfect is effectively solved, water intrusion can be more effectively blocked, and the sealing reliability of the charging gun in a complex outdoor environment is ensured.

Description

Technical Field

[0001] This utility model relates to the field of charging gun technology, specifically a sealed and waterproof charging gun. Background Technology

[0002] The charging gun is a key piece of equipment used for charging electric vehicles. Its main function is to transfer electrical energy from the charging station to the electric vehicle's battery. Since charging stations are mostly installed outdoors, the charging gun is often exposed to various complex environments. Therefore, it must have good sealing and waterproof performance to ensure its normal operation and safe use.

[0003] A search revealed that Chinese patent CN220628327U discloses a sealing and waterproof charging gun with a fixing bolt. The sealing sleeve can be squeezed by the connecting parts and the tail cap, causing the sealing sleeve to deform and allowing it to fit more tightly against the charging gun shell and the cable, thereby improving the sealing performance and preventing water leakage.

[0004] However, although existing technologies improve sealing by using connectors and tail caps to compress the sealing sleeve and make it fit the charging gun shell and cable, the sealing is still not perfect. In order to further improve the sealing and waterproof performance of the charging gun and ensure its safe and stable operation in various complex environments, a new sealed and waterproof charging gun design is proposed. This design enhances the overall sealing and waterproof effect of the charging gun by setting up specially structured plugs, sealing components and fixing components. Utility Model Content

[0005] In view of the above-mentioned background technology, there are shortcomings and defects in the sealing performance of the existing technology.

[0006] The present invention discloses a sealed and waterproof charging gun, comprising a charging gun body and a cable, the cable being mounted on the charging gun body, a plug being sleeved on the cable, the plug being inserted into the charging gun body, a fixing component being provided between the plug and the charging gun body, and a detachable sealing component being provided at both ends of the plug.

[0007] Furthermore, a stop block is installed inside the charging gun body, and a slot is provided between the stop block and the inner wall of the charging gun body. The cut surface of the insert block is "Z" shaped, and the insert block is inserted into the slot. A sealing gasket is provided between the insert block and the slot.

[0008] Furthermore, the sealing assembly includes a threaded cylinder one and a threaded cylinder two, the threaded cylinder one and the threaded cylinder two being arranged opposite to each other, the two ends of the insert block being provided with threaded grooves, the threaded cylinder one and the threaded cylinder two being threadedly connected to the corresponding threaded grooves, and a sealing ring being provided between the threaded cylinder one, the threaded cylinder two and the threaded grooves.

[0009] Furthermore, both the first threaded cylinder and the second threaded cylinder have stepped grooves at their adjacent ends, and a second sealing gasket is installed on the stepped groove, which contacts the cable.

[0010] Furthermore, the cross-section of the stop block is "L" shaped, and an extrusion groove is provided at one end of the stop block near the first threaded cylinder. The extrusion groove is inclined, and a sealing gasket is provided between the extrusion groove and the first threaded cylinder. The sealing gasket is installed on the first threaded cylinder.

[0011] Furthermore, the fixing component includes a connecting plate, one end of which is mounted on the insert block. A limiting plate is provided on the charging gun body at a corresponding position of the connecting plate. The connecting plate and the limiting plate are slidably disposed. A fixing bolt is provided between the limiting plate and the connecting plate. The fixing bolt is rotatably mounted on the limiting plate, and one end of the fixing bolt is threadedly connected to the connecting plate.

[0012] Furthermore, the two sides of the plug are set as planes, the plug is symmetrically arranged, and the end of the plug near the charging gun body is chamfered.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model forms a preliminary seal by connecting the fixing bolt plug and the slot, combined with the sealing gasket. Then, by using the threaded connection between the threaded cylinder and the plug, along with the sealing ring, the sealing gasket, and the inclined extrusion groove and the sealing gasket, a multi-dimensional, dead-angle-free sealing system is formed from the connection between the plug and the charging gun body to the two ends where the cable passes through the plug. This effectively solves the problem of insufficient sealing, can more effectively prevent moisture intrusion, and ensure the sealing reliability of the charging gun in complex outdoor environments.

[0014] 2. The fixing component of this utility model achieves a stable connection between the plug and the charging gun body through the connecting plate, the limiting plate and the fixing bolt, avoiding loosening of the sealing structure due to vibration, etc.; the sealing component adopts a threaded connection detachable design, when the sealing gasket, sealing ring and other vulnerable parts are aged, they can be easily replaced without disassembling the entire charging gun body, thus extending the service life of the charging gun and reducing maintenance costs. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial sectional view of the present invention; Figure 3 This utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is an exploded view of the present invention.

[0016] In the diagram: 1. Charging gun body; 2. Cable; 3. Insert block; 4. Stop block; 5. Slot; 6. Sealing gasket one; 7. Threaded cylinder one; 8. Threaded cylinder two; 9. Threaded groove; 10. Sealing ring; 11. Stepped groove; 12. Sealing gasket two; 13. Sealing gasket three; 14. Extrusion groove; 15. Connecting plate; 16. Limiting plate; 17. Fixing bolt. Detailed Implementation

[0017] The following illustrations will reveal several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0018] Please see Figure 1 , Figure 4 The present invention relates to a sealed and waterproof charging gun, comprising a charging gun body 1 and a cable 2. The charging gun body 1 is made of high-strength ABS engineering plastic fixing bolts. The cable 2 is installed on the charging gun body 1, and a plug 3 is sleeved on the cable 2. The plug 3 is inserted into the charging gun body 1. The two sides of the plug 3 are set as planes, and the plug 3 is symmetrically arranged. The end of the plug 3 near the charging gun body 1 is chamfered. A stop block 4 is installed inside the charging gun body 1.

[0019] See Figure 1 , Figure 2 , Figure 4 As shown, a slot 5 is provided between the stop block 4 and the inner wall of the charging gun body 1. The cross-section of the plug block 3 is "Z" shaped. The plug block 3 is inserted into the slot 5. A sealing gasket 6 is provided between the plug block 3 and the slot 5. A fixing component is provided between the plug block 3 and the charging gun body 1. The fixing component includes a connecting plate 15. One end of the connecting plate 15 is installed on the plug block 3. A limit plate 16 is provided on the charging gun body 1 at the corresponding position of the connecting plate 15. The connecting plate 15 and the limit plate 16 are slidably disposed. A fixing bolt 17 is provided between the limit plate 16 and the connecting plate 15. The fixing bolt 17 is rotatably installed on the limit plate 16.

[0020] See Figure 1 , Figure 2 , Figure 3As shown, one end of the fixing bolt 17 is threaded to the connecting plate 15. The fixing bolt 17 is made of 304 stainless steel, which is rust-proof and ensures the smoothness of the threaded connection. The end is designed with a slotted groove for easy operation with a regular screwdriver. Both ends of the insert block 3 are provided with detachable sealing components. The sealing components include threaded cylinder 7 and threaded cylinder 8. Threaded cylinder 7 and threaded cylinder 8 are arranged opposite to each other. Both ends of the insert block 3 are provided with threaded grooves 9. Threaded cylinder 7 and threaded cylinder 8 are threaded to the corresponding threaded grooves 9.

[0021] See Figure 3 As shown, the cross-section of the stop block 4 is "L" shaped. The fixing bolts 3 and 5 of the insert block and the slot fixing bolts form a circumferential seal through the sealing gasket and fixing bolt 6, isolating the inside of the charging gun body fixing bolt 1 from the external environment. The structural cooperation between the "Z" shaped insert block 3 and the "L" shaped stop block 4 increases the length of the moisture penetration path and improves the sealing redundancy. The end of the stop block 4 near the threaded cylinder 7 is provided with a squeezing groove 14, which is inclined. A sealing gasket 3 13 is provided between the squeezing groove 14 and the threaded cylinder 7, and the sealing gasket 3 13 is installed on the threaded cylinder 7.

[0022] In this embodiment, the compression groove fixing bolt 14 of the threaded cylinder fixing bolt 7 and the stop fixing bolt 4 forms an inclined surface compression seal through the sealing gasket fixing bolt 13. Utilizing the "wedge effect" of the inclined fixing bolt, as the insert fixing bolt 3 is installed, the compression of the sealing gasket fixing bolt 13 gradually increases, and the sealing force increases linearly, further blocking any possible leakage of moisture from the sealing edge. Both the threaded cylinder 7 and the threaded cylinder 8 have stepped grooves 11 at their closest ends, and a sealing gasket 12 is installed on the stepped groove 11, which contacts the cable 2.

[0023] In this embodiment, the sealing gasket 2 fixing bolt 12 inside the stepped groove fixing bolt 11 is tightly fitted with the cable fixing bolt 2 to form an axial seal, preventing moisture from penetrating along the surface of the cable 2. The sealing gasket 1 fixing bolt 6, sealing gasket 2 fixing bolt 12, and sealing gasket 3 fixing bolt 13 are made of EPDM rubber, which is oil-resistant, water-resistant, and aging-resistant. Among them, the sealing gasket 2 fixing bolt 12, which is in contact with the cable fixing bolt 2, is provided with wear-resistant particles to avoid failure due to long-term friction with the cable 2.

[0024] In this embodiment, a sealing ring 10 is provided between the threaded cylinder 7, the threaded cylinder 8 and the threaded groove 9. The threaded groove fixing bolts 9 of the threaded cylinder fixing bolts 7 and 8 and the fixing bolts 3 of the insert block form a radial seal through the sealing ring fixing bolt 10, preventing moisture from entering from the threaded connection gaps at both ends of the insert block 3. The sealing ring 10 is made of nitrile rubber, which utilizes its high elasticity and resistance to compression deformation to ensure the static seal of the threaded connection.

[0025] The implementation principle is as follows: First, threaded cylinder 7 and threaded cylinder 8 are threadedly connected to the threaded grooves 9 at both ends of the insert block 3. During the connection process, the sealing ring 10 between threaded cylinder 7, threaded cylinder 8 and threaded groove 9 is compressed, forming a seal at the connection between the insert block 3 and the threaded cylinder. At the same time, the sealing gasket 12 in the stepped groove 11 at one end of threaded cylinder 7 and threaded cylinder 8 is in close contact with the cable 2, achieving a seal when the cable 2 passes through both ends of the insert block 3. Then, the plug 3 is inserted into the slot 5 formed by the internal block 4 and the inner wall of the charging gun body 1. At this time, the sealing gasket 6 between the plug 3 and the slot 5 is squeezed and deformed, forming a seal at the connection between the plug 3 and the charging gun body 1. As the insert block 3 is installed in place, the sealing gasket 13 at the end of its threaded cylinder 7 contacts and is squeezed by the compression groove 14 inclined on the stop block 4. The pressure of the inclined structure enhances the sealing performance of the sealing gasket 13, further preventing moisture from entering from the gap between the threaded cylinder 7 and the stop block 4. While the plug 3 is being inserted, the connecting plate 15 on the plug 3 slides on the limiting plate 16, and one end of the fixing bolt 17 contacts the connecting plate 15. Then, the fixing bolt 17 is rotated to make it threadedly connected to the connecting plate 15 and gradually tightened, thereby firmly fixing the plug 3 to the charging gun body 1 and preventing the sealing structure from loosening due to external forces such as vibration.

[0026] When vulnerable parts such as sealing gasket 16 age, turn the fixing bolt 17 in the opposite direction to loosen the fixing assembly, pull out the insert 3, and then turn the threaded cylinder 17 and threaded cylinder 28 in the opposite direction to separate them from the insert 3. Then, the aged sealing gasket 16, sealing ring 10, sealing gasket 2 12, sealing gasket 3 13 and other parts can be replaced separately without disassembling the entire charging gun body 1, reducing maintenance difficulty and cost.

[0027] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A sealed and waterproof charging gun, comprising a charging gun body (1) and a cable (2), characterized in that: The cable (2) is installed on the charging gun body (1), and a plug (3) is fitted on the cable (2). The plug (3) is inserted into the charging gun body (1). A fixing component is provided between the plug (3) and the charging gun body (1). Both ends of the plug (3) are provided with detachable sealing components.

2. The sealed and waterproof charging gun according to claim 1, characterized in that: A stop block (4) is installed inside the charging gun body (1). A slot (5) is provided between the stop block (4) and the inner wall of the charging gun body (1). The cut surface of the plug (3) is "Z" shaped. The plug (3) is inserted into the slot (5). A sealing gasket (6) is provided between the plug (3) and the slot (5).

3. The sealed and waterproof charging gun according to claim 2, characterized in that: The sealing assembly includes a threaded cylinder one (7) and a threaded cylinder two (8). The threaded cylinder one (7) and the threaded cylinder two (8) are arranged opposite to each other. The two ends of the insert block (3) are provided with threaded grooves (9). The threaded cylinder one (7) and the threaded cylinder two (8) are threadedly connected to the corresponding threaded grooves (9). A sealing ring (10) is provided between the threaded cylinder one (7), the threaded cylinder two (8) and the threaded grooves (9).

4. A sealed and waterproof charging gun according to claim 3, characterized in that: Both the threaded cylinder one (7) and the threaded cylinder two (8) have stepped grooves (11) at their closest ends. A sealing gasket two (12) is installed on the stepped groove (11) and the sealing gasket two (12) is in contact with the cable (2).

5. A sealed and waterproof charging gun according to claim 3, characterized in that: The stop block (4) has an "L" shaped cross section. A squeezing groove (14) is provided at one end of the stop block (4) near the threaded cylinder (7). The squeezing groove (14) is inclined. A sealing gasket (13) is provided between the squeezing groove (14) and the threaded cylinder (7). The sealing gasket (13) is installed on the threaded cylinder (7).

6. A sealed and waterproof charging gun according to claim 1, characterized in that: The fixing component includes a connecting plate (15), one end of which is mounted on the insert block (3). A limiting plate (16) is provided on the charging gun body (1) at the corresponding position of the connecting plate (15). The connecting plate (15) and the limiting plate (16) are slidably disposed. A fixing bolt (17) is provided between the limiting plate (16) and the connecting plate (15). The fixing bolt (17) is rotatably mounted on the limiting plate (16). One end of the fixing bolt (17) is threadedly connected to the connecting plate (15).

7. A sealed and waterproof charging gun according to claim 1, characterized in that: The two sides of the plug (3) are set as planes, the plug (3) is symmetrically arranged, and the end of the plug (3) near the charging gun body (1) is chamfered.

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