Charging gun

Abstract

The invention provides a charging gun, and the charging gun comprises a main body, a connection assembly, and a first terminal. The main body comprises a gun body and a gun head which are mutually covered, the gun body is provided with a containing cavity, and the gun head partially extends into and blocks the containing cavity; the connecting assembly comprises a fixing seat and a connecting piece arranged on the fixing seat, the fixing seat is arranged in the containing cavity, a fixing hole communicated with the containing cavity is formed in the fixing seat, the connecting piece comprises a sealing part and an inserting part which are sequentially and integrally arranged, and the sealing part extends into the fixing hole and is in sealed connection with the fixing hole; the first terminal is inserted into the insertion part and is electrically connected with the sealing part, and one end, deviating from the insertion part, of the first terminal extends into the gun head. According to the charging gun, the connecting piece is divided into the inserting part and the sealing part, and the sealing performance of the interior of the gun body is ensured through the design of the sealing part. The plugging design between the plugging part and the terminal not only simplifies the replacement process of the terminal, but also can effectively prevent external water vapor and dust from seeping into the gun body through the signal terminal.

Description

Technical Field

[0001] The present application relates to the technical field of charging guns, and in particular to a charging gun. Background Art

[0002] With the rapid growth of the electric vehicle (EV) market, the construction of charging infrastructure is also advancing. As a crucial device in the charging process of electric vehicles, the performance of the charging gun directly affects the charging efficiency and safety. The charging gun usually consists of a gun body, a gun head, and a connection terminal. The gun head terminal is electrically connected to the charging interface of the electric vehicle, so the terminal is required to have good contact performance, durability, and easy replacement and maintenance.

[0003] At present, the design of charging guns is mostly one-piece and inseparable. In public places, as the frequency of use increases, the gun head is often worn and damaged. Damage to the gun head can easily lead to normal plugging and unplugging of the charging gun, and serious damage to the charging terminal. Especially in the case of high-current charging, damage to the terminal part can lead to poor contact, heating and other problems, affecting the charging effect and service life. Therefore, the design of the charging gun urgently needs to meet higher safety, reliability and maintainability requirements. In order to solve the problem of wear and damage at the front end of the charging gun, some charging guns in the prior art adopt a detachable design, especially in the gun head part, which adopts a split design so that the gun head and the gun body can be disassembled and replaced by screws, buckles, etc., to avoid the scrapping of the entire charging gun.

[0004] Although the existing detachable charging gun design has the gun head and gun body designed to be detachable, and the charging terminal is also designed as a detachable part to solve the common problem of gun head damage during the use of the charging gun, there are still certain limitations in the disassembly of the charging terminal, because the signal terminal is more sensitive to external interference. After the signal terminal is detachable, the sealing performance between the terminal and the gun body is weakened, and external water vapor enters from the signal terminal, causing charging failure or abnormality. Therefore, in the existing design, only the charging head and charging terminal parts can be disassembled and replaced. When other terminals are damaged, the charging gun in the existing design cannot disassemble and replace the damaged signal terminal. Therefore, there is an urgent need for a charging gun that allows users to replace each terminal of the charging gun and can also maintain good sealing performance to solve the above problems. Summary of the invention

[0005] In view of this, it is necessary to provide a charging gun that can replace the terminals of the charging gun and can also maintain good sealing performance to solve the above problems.

[0006] An embodiment of the present application provides a charging gun, comprising:

[0007] The main body comprises a gun body and a gun head which cover each other, the gun body is provided with a receiving cavity, and the gun head part extends into and blocks the receiving cavity;

[0008] A connection assembly, comprising a fixing seat and a connection piece arranged on the fixing seat, wherein the fixing seat is arranged in the accommodating cavity, the fixing seat is provided with a fixing hole communicating with the accommodating cavity, and the connection piece comprises a sealing portion and a plug-in portion which are sequentially integrally arranged, the sealing portion extends into the fixing hole and is sealed and connected with the fixing hole;

[0009] The first terminal is inserted into the plug-in portion and electrically connected to the sealing portion. One end of the first terminal facing away from the plug-in portion extends into the gun head and is sealed and connected to the gun head.

[0010] In at least one embodiment of the present application, the charging gun includes a first seal and a second seal disposed between the gun body and the gun head;

[0011] One end of the gun head close to the gun body is inwardly recessed to form a first step surface, the first step surface is annularly arranged at the butt end of the gun head and extends into the accommodating cavity, one end of the first sealing member is annularly abutted against the step surface, and the other end is interference fit with the inner wall of the gun body;

[0012] The gun head is provided with a plug hole, the first terminal extends into the plug hole, one end of the second sealing member abuts against the inner wall of the plug hole, and the other end is interference fit with the outer wall of the connector.

[0013] In at least one embodiment of the present application, one end of the plug hole close to the connector is recessed inward to form a second step surface, and the second sealing member abuts against the second step surface;

[0014] The charging gun includes a first sealing ring, which is sleeved on the outer wall of the first terminal and abuts against the inner wall of the plug hole.

[0015] In at least one embodiment of the present application, the charging gun further includes a second sealing ring, which is sleeved on an outer wall of the connector and abuts against an inner wall of the fixing hole.

[0016] In at least one embodiment of the present application, the connection assembly further comprises a fixing block fixedly connected to the fixing seat, the fixing block extends into the fixing hole and abuts against the sealing portion, and the fixing block adheres to the inner wall of the fixing seat to fix the connecting member;

[0017] The side wall of the fixing seat and the fixing block are combined to form a glue injection cavity, and the glue injection cavity is filled with glue to seal the fixing hole.

[0018] In at least one embodiment of the present application, the charging gun also includes a sealing sleeve mounted on the circumferential surface of the fixing seat, the sealing sleeve separates the accommodating cavity to form a first cavity and a second cavity, the connecting component is disposed in the first cavity, and the sealing sleeve is used to isolate external water vapor from entering the connecting component.

[0019] In at least one embodiment of the present application, the plug-in portion is provided with a countersunk hole, and the connecting assembly also includes an elastic snap ring abutting against the inner wall of the countersunk hole, the plug-in end of the first terminal has a plug-in surface, and the elastic snap ring has an elastic abutting surface, and the elastic abutting surface abuts against the plug-in surface to fix the first terminal.

[0020] In at least one embodiment of the present application, the elastic clamp includes a fixed portion and an elastic portion that are integrally arranged, and the fixed portion is arranged at opposite ends of the elastic portion;

[0021] The fixing portion abuts against the inner wall of the counterbore, the elastic portion abuts against the first terminal, and when viewed along the axial direction of the elastic clamping ring, the maximum inner diameter of the elastic portion is less than or equal to the minimum inner diameter of the fixing portion.

[0022] In at least one embodiment of the present application, the connector further includes a limiting portion disposed at an end of the plug-in portion away from the sealing portion, and the limiting portion is used to limit the movement of the elastic clamping ring.

[0023] In at least one embodiment of the present application, the charging gun further includes a second terminal fixedly connected to the connecting member, and the second terminal abuts against the connecting member;

[0024] The charging gun also includes a fixing member, the second terminal is provided with a through hole, the fixing member extends into the through hole and abuts against the second terminal to be fixedly connected with the connecting member, and the charging gun also includes a sealing gasket, which is arranged between the fixing member and the second terminal and is used to seal the through hole.

[0025] The above-mentioned charging gun is provided with a detachable first terminal, and the present invention effectively solves the problem that some terminals in the existing charging gun cannot be removed. Users can replace the terminals as needed, avoiding the high cost of repairing or replacing the charging gun when the entire charging gun is damaged; the connector is divided into a plug-in part and a sealing part, and the sealing performance inside the gun body is ensured by the design of the sealing part. The plug-in design between the plug-in part and the terminal not only simplifies the terminal replacement process, but also effectively prevents external water vapor and dust from penetrating into the gun body through the signal terminal; the sealing setting between the terminal and the gun head further enhances the waterproof performance of the charging gun. Whether it is the gun head terminal or the part connected to the gun body, the sealing design effectively prevents the entry of water vapor, thereby avoiding electrical failures or charging anomalies caused by water vapor. This multiple waterproof structure greatly improves the reliability of the charging gun. The design of the present invention not only makes the terminal detachable, but also ensures that the sealing is not affected after disassembly. This innovation improves the convenience of users in the maintenance and operation of the charging gun. When replacing the terminal, the user does not need to worry about the decline in sealing or other potential problems, ensuring that the charging gun can still maintain its efficient and safe performance after replacing the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of a charging gun in one embodiment of the present application.

[0027] Figure 2 for Figure 1 A three-dimensional exploded view of the charging gun.

[0028] Figure 3 for Figure 2 An enlarged view of part A of the charging gun.

[0029] Figure 4 for Figure 1 An enlarged cross-sectional view of the first terminal of the charging gun.

[0030] Figure 5 for Figure 1 A disassembled cross-sectional view of a charging head and a connecting assembly of a charging gun.

[0031] Figure 6 for Figure 1 A three-dimensional disassembled cross-sectional view of a charging head and a connecting assembly of a charging gun.

[0032] Figure 7 for Figure 1 A three-dimensional diagram of a fixing seat and a fixing block of a charging gun.

[0033] Figure 8 for Figure 1 An enlarged cross-sectional view of the second terminal of the charging gun.

[0034] Fig. 9 for Figure 1 A disassembled diagram of the charging gun.

[0035] Fig.10 for Figure 1 A disassembled diagram of the charging gun.

[0036] Main component symbols

[0037] 100. A charging gun; 10. Main body; 11. Gun body; 12. Gun head; 121. Accommodating cavity; 121a. First cavity; 121b. Second cavity; 122. First step surface; 123. Plug hole; 123a. Second step surface; 13. First sealing member; 14. Second sealing member; 15. First sealing ring; 16. Second sealing ring; 20. Connecting assembly; 21. Fixed seat; 211. Fixed hole; 22. Connecting member; 221. Sealing part; 222. Plug part; 222a. Countersunk hole; 223. Limiting part; 23. Fixed block; 24. Glue injection cavity; 25. Elastic snap ring; 251. Elastic abutting surface; 252. Fixed part; 253. Elastic part; 30. First terminal; 31. Plug surface; 40. Sealing sleeve; 50. Second terminal; 60. Fixing member; 70. Sealing gasket. DETAILED DESCRIPTION

[0038] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0039] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0040] An embodiment of the present application provides a charging gun, comprising:

[0041] The main body comprises a gun body and a gun head which cover each other, the gun body is provided with a receiving cavity, and the gun head part extends into and blocks the receiving cavity;

[0042] A connection assembly, comprising a fixing seat and a connection piece arranged on the fixing seat, wherein the fixing seat is arranged in the accommodating cavity, the fixing seat is provided with a fixing hole communicating with the accommodating cavity, and the connection piece comprises a sealing portion and a plug-in portion which are sequentially integrally arranged, the sealing portion extends into the fixing hole and is sealed and connected with the fixing hole;

[0043] The first terminal is inserted into the plug-in portion and electrically connected to the sealing portion. One end of the first terminal facing away from the plug-in portion extends into the gun head and is sealed and connected to the gun head.

[0044] The above-mentioned charging gun is provided with a detachable first terminal, and the present invention effectively solves the problem that some terminals in the existing charging gun cannot be removed. Users can replace the terminals as needed, avoiding the high cost of repairing or replacing the charging gun when the entire charging gun is damaged; the connector is divided into a plug-in part and a sealing part, and the sealing performance inside the gun body is ensured by the design of the sealing part. The plug-in design between the plug-in part and the terminal not only simplifies the terminal replacement process, but also effectively prevents external water vapor and dust from penetrating into the gun body through the signal terminal; the sealing setting between the terminal and the gun head further enhances the waterproof performance of the charging gun. Whether it is the gun head terminal or the part connected to the gun body, the sealing design effectively prevents the entry of water vapor, thereby avoiding electrical failures or charging anomalies caused by water vapor. This multiple waterproof structure greatly improves the reliability of the charging gun. The design of the present invention not only makes the terminal detachable, but also ensures that the sealing is not affected after disassembly. This innovation improves the convenience of users in the maintenance and operation of the charging gun. When replacing the terminal, the user does not need to worry about the decline in sealing or other potential problems, ensuring that the charging gun can still maintain its efficient and safe performance after replacing the terminal.

[0045] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0046] See also Figure 1-Figure 2 , an embodiment of the present application provides a charging gun 100, including a main body 10, a connecting assembly 20 and a first terminal 30;

[0047] The main body 10 includes a gun body 11 and a gun head 12 which cover each other. The gun body 11 is provided with a receiving cavity 121, and the gun head 12 partially extends into and blocks the receiving cavity 121.

[0048] The connecting assembly 20 includes a fixing seat 21 and a connecting member 22 disposed on the fixing seat 21. The fixing seat 21 is disposed in the accommodating cavity 121. The fixing seat 21 is provided with a fixing hole 211 communicating with the accommodating cavity 121. The connecting member 22 includes a sealing portion 221 and a plug-in portion 222 which are sequentially integrally arranged. The sealing portion 221 extends into the fixing hole 211 and is sealed and connected to the fixing hole 211.

[0049] The first terminal 30 is inserted into the plug-in portion 222 and electrically connected to the sealing portion 221 . One end of the first terminal 30 away from the plug-in portion 222 extends into the gun head 12 and is sealed and connected to the gun head 12 .

[0050] Specifically, the detachable design of the gun body 11 and the gun head 12 provides a modular structure for the charging gun, which is convenient for maintenance and replacement of parts. Structurally, a accommodating cavity 121 is provided in the gun body 11, and the gun head 12 can partially extend into and block the cavity to ensure the integrity and safety of the charging gun. The design inside the accommodating cavity 121 provides the necessary space for the installation and disassembly of the connecting assembly 20 and the terminal, and facilitates the connection and replacement of the terminal and the sealing assembly. The close-fitting design of the accommodating cavity 121 and the gun head 12 helps prevent the entry of external impurities such as water vapor and dust, ensuring that the charging gun maintains good waterproof performance when in use.

[0051] Furthermore, the fixing seat 21 provides a stable support point for the connecting component 20, ensuring that the connecting piece 22 can be firmly mounted on the main body 10 of the charging gun. The fixing seat 21 usually cooperates with the fixing hole 211 in the accommodating cavity 121, and plays a role in positioning the connecting piece 22 and the terminal (such as a DC terminal, a signal terminal, etc.), thereby ensuring that the terminal can be accurately connected. The sealing portion 221 and the plug-in portion 222 are integrally arranged, and the design of the sealing portion 221 ensures a good seal between the connecting piece 22 and the gun body 11, preventing external water vapor from penetrating and affecting the internal electrical components; the tail end of the sealing portion 221 is electrically connected to the cable inside the gun body 11, and the plug-in portion 222 ensures the electrical connection of the terminal, provides stable current transmission, and ensures the normal function of the charging gun.

[0052] In a specific embodiment, the first terminal 30 is a signal terminal or a ground terminal or both are the first terminal 30 , and there is at least one first terminal 30 .

[0053] Furthermore, the design not only provides the plug-in portion 222 required for electrical connection, but also realizes the waterproof function through the sealing portion 221, thereby preventing the external environment from damaging the internal electrical system of the charging gun. The plug-in and pull-out effect of the terminal is realized without affecting the sealing effect inside the gun body 11, and the first terminal 30 is sealed and connected to the gun head 12, which not only provides electrical connection, but also ensures the sealing of the charging gun head 12, preventing external moisture, dust, etc. from entering the gun head 12, and improving the applicability of the charging gun in a humid or dusty environment.

[0054] In a specific embodiment, the charging gun includes a first sealing member 13 and a second sealing member 14 disposed between the gun body 11 and the gun head 12;

[0055] One end of the gun head 12 close to the gun body 11 is inwardly recessed to form a first step surface 122, the first step surface 122 is arranged around the butt end of the gun head 12 and extends into the accommodating cavity 121, one end of the first sealing member 13 is annularly abutted against the step surface, and the other end is interference fit with the inner wall of the gun body 11;

[0056] The gun head 12 is provided with a plug hole 123 , the first terminal 30 extends into the plug hole 123 , one end of the second sealing member 14 abuts against the inner wall of the plug hole 123 , and the other end is interference fit with the outer wall of the connector 22 .

[0057] Specifically, the first seal 13 is annularly abutted against the first step surface 122, and the other end is interference fit with the inner wall of the gun body 11. The first step surface 122 is located at the end of the gun head 12 close to the gun body 11, and is concave to form a step shape. The first seal 13 forms a seal with the gun body 11 on the step surface, which can effectively prevent water vapor, dust, etc. from entering the interior of the charging gun. The second seal 14 is located in the plug hole 123 of the gun head 12, one end of which abuts against the inner wall of the plug hole 123, and the other end of which is interference fit with the outer wall of the connector 22. The second seal 14 mainly forms a seal in the contact area of ​​the terminal insertion hole to prevent water vapor from entering from the plug hole 123 and protect the internal electrical components.

[0058] Furthermore, when the gun head 12 and the gun body 11 of the charging gun are connected by closing, the first seal 13 and the second seal 14 work at the same time, forming a double seal between the gun body 11 and the gun head 12. The first seal 13 ensures the sealing of the entire connection part of the charging gun by contacting with the step surface and interfering with the inner wall of the gun body 11, preventing water vapor from entering the interior from the connection between the gun head 12 and the gun body 11. The second seal 14 prevents water vapor from entering the interior of the gun head 12 from the plug hole 123 by interfering with the inner wall of the plug hole 123 and the outer wall of the connector 22, thereby protecting the safety of the internal electrical components and terminals.

[0059] In a specific embodiment, one end of the plug hole 123 close to the connector 22 is recessed inward to form a second step surface 123a, and the second sealing member 14 abuts against the second step surface 123a;

[0060] The charging gun includes a first sealing ring 15 , which is sleeved on the outer wall of the first terminal 30 and abuts against the inner wall of the plug hole 123 .

[0061] Specifically, one end of the plug hole 123 close to the connector 22 is recessed inward to form a second step surface 123a, in order to provide a precise installation position for the second seal 14. This design enables the second seal 14 to fit tightly against the step surface, thereby providing an effective sealing effect. The second seal 14 contacts the second step surface 123a to form a second waterproof barrier to prevent water vapor or impurities from entering the interior of the charging gun through the plug hole 123. The addition of the second seal 14 further enhances the sealing of the charging gun at the plug-in portion 222, and during the disassembly process, it can effectively prevent external water vapor from entering the area between the gun head 12 and the gun body 11, thereby ensuring the normal operation of the internal electrical system.

[0062] Furthermore, the first sealing ring 15 is a sealing part 221 located in the tip 12 of the charging gun, adjacent to the plug hole 123. Its main function is to prevent external water vapor or moisture from entering the gun body 11 of the charging gun from the plug hole 123, ensuring that the inside of the charging gun is dry and clean during use, and avoiding water vapor or dust from damaging the electrical system. The first sealing ring 15 is the first seal of the terminal at the gun head 12. It is located at the terminal plug hole 123. After the gun body 11 and the gun head 12 are covered, the first sealing ring 15 ensures the sealing performance at the plug hole 123, thereby effectively preventing external water vapor from entering the gun body 11 and protecting the electronic components and terminals of the charging gun.

[0063] During the replacement of parts of the charging gun, the gun body 11 and the gun head 12 are connected and covered, and the sealing ring first forms a seal at the plug hole 123 to prevent water vapor from entering the gun body 11 through the plug hole 123. Then, it cooperates with the seal between the gun body 11 and the gun head 12 to provide more comprehensive protection.

[0064] In a specific embodiment, the charging gun further includes a second sealing ring 16 , which is sleeved on the outer wall of the connecting member 22 and abuts against the inner wall of the fixing hole 211 .

[0065] Specifically, the second sealing ring 16 is arranged on the outer wall of the connector 22, and cooperates with the first sealing ring 15 and other sealing parts to form a multiple sealing structure to ensure that the inside of the charging gun always maintains a dry and clean environment. This multiple sealing design ensures that the sealing performance is not affected even during the frequent plugging and unplugging of the terminals, further enhancing the protection capability of the equipment. The second sealing ring 16 forms contact with the inner wall of the fixing hole 211 to strengthen the sealing effect between the connector 22 and the gun body 11. When replacing the terminal, the connector 22 and the gun body 11 are always sealed, and will not affect the plugging and unplugging of the terminal and the connector 22, greatly improving the waterproof and dustproof performance of the charging gun and extending the service life of the equipment.

[0066] In a specific embodiment, the connecting assembly 20 further includes a fixing block 23 fixedly connected to the fixing seat 21, the fixing block 23 extends into the fixing hole 211 and abuts against the sealing portion 221, and the fixing block 23 fits against the inner wall of the fixing seat 21 to fix the connecting member 22;

[0067] The side wall of the fixing seat 21 and the fixing block 23 are enclosed to form a glue injection cavity 24 , and the glue injection cavity 24 is filled with glue to seal the fixing hole 211 .

[0068] Specifically, the fixed connection between the fixing block 23 and the fixing seat 21 ensures the stable position of the connector 22 inside the gun body 11, and prevents the connector 22 from moving due to external forces such as vibration and friction during use. The design of the fixing block 23 allows the connector 22 to be firmly fixed inside the gun body 11, avoiding the situation where poor contact, unstable conductivity or potential safety hazards are caused by the looseness of the connector 22. The fixing block 23 extends into the fixing hole 211 and contacts the sealing part 221, which helps to ensure that the sealing part 221 is tightly fitted with the inner wall of the fixing seat 21, and avoids the shaking of the connector 22 in the fixing seat 21 during the plugging and unplugging of the terminal.

[0069] Furthermore, the side wall of the fixing seat 21 and the fixing block 23 are enclosed to form a glue injection cavity 24. When the fixing member 60 and the connecting member 22 are fixed, the fixed connection can be further reinforced by injecting a sealing glue material, and the complete sealing of the sealing hole can be ensured. This design enhances the structural connectivity between the fixing seat 21 and the fixing block 23, and prevents external substances (such as water, dust, etc.) from entering the gun body 11 from the fixing hole 211. The injection of sealant also ensures a firm connection between the fixing block 23 and the fixing seat 21, further fixing the stability of the terminal. The sealant filled in the glue injection cavity 24 plays a role of sealing and waterproofing after curing. The sealant has excellent anti-aging, temperature resistance and waterproof properties, can withstand changes in temperature and humidity in the outside world, and absorb external pressure changes to a certain extent, maintaining a stable connection between the fixing member 60 and the fixing seat 21.

[0070] In a specific embodiment, the charging gun also includes a sealing sleeve 40 mounted on the circumference of the fixing seat 21, the sealing sleeve 40 separates the accommodating cavity 121 to form a first cavity 121a and a second cavity 121b, the connecting component 20 is disposed in the first cavity 121a, and the sealing sleeve 40 is used to isolate external water vapor from entering the connecting component 20.

[0071] Specifically, the sealing sleeve 40 is a protective device that is sleeved around the fixing seat 21. Its main function is to further prevent external water vapor (for example, due to the imperfect seal at the joint of the gun body 11 and the gun head 12 due to long-term use, or water vapor penetration that may be generated during the splicing process) from entering the interior of the charging gun, especially the area of ​​the connecting component 20 where the electrical components are located. The sealing sleeve 40 isolates the water vapor entering the splicing through physical isolation to ensure that the internal electrical system is not affected.

[0072] Furthermore, one end of the sealing sleeve 40 is fixed to the circumference of the fixing seat 21, and the other end is connected to the cable outlet of the charging gun and sealed. One end of the sealing sleeve 40 is physically fixed to the circumference of the fixing seat 21 to ensure its stable position. The fixing seat 21 is located inside the accommodating cavity 121. The sealing performance of the inner cavity of the charging gun is further enhanced by the tight fit of the sealing sleeve 40. This design ensures that the charging gun can effectively prevent external water vapor from entering the internal area through the fixing seat 21 during use. The other end of the sealing sleeve 40 is connected to the cable outlet to seal the cable outlet part of the charging gun to ensure that external moisture does not enter the gun body 11 from the cable outlet.

[0073] Furthermore, the sealing cover divides the accommodating chamber 121 into two chambers, and the electrical components are all covered by the sealing sleeve 40. The gun body 11 itself provides an outer layer of waterproof protection to prevent external water vapor from entering the interior of the charging gun. Then, the presence of the sealing sleeve 40 further forms a second layer of waterproof barrier inside, and by dividing the accommodating chamber 121 into two chambers, it ensures that the electrical components work in a more closed environment, thereby effectively preventing water vapor from damaging the electrical components.

[0074] The sealing ring at the gun head 12 and the sealing part at the joint of the gun body 11 and the gun head 12 form the first and second waterproof barriers. Combined with the sealing design in the connector 22, a complete multiple sealing system is formed to ensure that even if there is a problem with the external waterproof layer, the internal sealing system can still block the intrusion of water vapor. Even if the signal terminal is disassembled and replaced, it will not affect the sealing performance of the entire charging gun.

[0075] In a specific embodiment, the plug-in portion 222 is provided with a countersunk hole 222a, and the connecting assembly 20 also includes an elastic snap ring 25 abutting against the inner wall of the countersunk hole 222a. The plug-in end of the first terminal 30 has a plug-in surface 31, and the elastic snap ring 25 is specifically an elastic abutting surface 251, and the elastic abutting surface 251 abuts against the plug-in surface 31 to fix the first terminal 30.

[0076] Specifically, the elastic snap ring 25 is an annular elastic element, one end face of which contacts the inner wall of the countersunk hole 222a, and the elastic abutment surface 251 contacts closely with the plug-in surface 31 of the first terminal 30. The elastic portion 253 of the elastic snap ring 25 can abut and maintain a certain pressure, thereby fixing the position of the terminal in the plug-in portion 222. Through the elastic action of the elastic snap ring 25, the first terminal 30 can be firmly fixed in the plug-in portion 222. Even under high load or long-term use, the terminal will not fall off due to vibration or external force, thereby ensuring a stable electrical connection between the terminal and the electrical component. Compared with traditional bolt or snap-on fixing methods, the design of the elastic snap ring 25 makes it easier to plug in and out the terminal.

[0077] In a specific embodiment, the elastic clamp 25 includes a fixed portion 252 and an elastic portion 253 that are integrally arranged, and the fixed portion 252 is arranged at two opposite ends of the elastic portion 253;

[0078] The fixing portion 252 abuts against the inner wall of the counterbore 222 a , and the elastic portion 253 abuts against the first terminal 30 . When viewed along the axial direction of the elastic clamp 25 , the maximum inner diameter of the elastic portion 253 is less than or equal to the minimum inner diameter of the fixing portion 252 .

[0079] Specifically, the fixing portion 252 is located at one of the two ends of the elastic snap ring 25, and its main function is to contact the inner wall of the countersunk hole 222a of the plug-in portion 222 to maintain the snap ring in a stable position in the plug-in portion 222. The fixing portion 252 ensures that the snap ring will not be offset or fall off due to external force through physical contact. The elastic portion 253 is the middle part of the elastic snap ring 25, is elastic, and contacts the terminal. The function of the elastic portion 253 is to provide sufficient elastic force to elastically compress the terminal, thereby ensuring that the terminal can be firmly fixed in the plug-in portion 222. The contact between the fixing portion 252 and the inner wall of the countersunk hole 222a ensures the stability of the elastic snap ring 25 in the installation position. The elastic portion 253 can provide continuous pressure by elastically abutting the terminal, firmly fixing the terminal in the plug-in portion 222, and preventing the terminal from loosening or falling off.

[0080] In a specific embodiment, the connecting member 22 further includes a limiting portion 223 disposed at an end of the plug-in portion 222 away from the sealing portion 221 , and the limiting portion 223 is used to limit the movement of the elastic clamping ring 25 .

[0081] Specifically, the limiting portion 223 is provided at one end of the plug-in portion 222 away from the sealing portion 221, and is usually located at the rear end of the plug-in portion 222 of the connector 22. The function of this component is to limit the movement of the elastic snap ring 25, ensuring that the snap ring is always in a predetermined position in the plug-in portion 222. During the plug-in and pull-out process of replacing the terminal, the limiting portion 223 limits the movement of the elastic snap ring 25 along the plug-in and pull-out direction of the terminal, preventing it from falling off during the process of replacing the terminal, resulting in unstable connection.

[0082] In a specific embodiment, the charging gun further includes a second terminal 50 fixedly connected to the connecting member 22, and the second terminal 50 abuts against the connecting member 22;

[0083] The charging gun also includes a fixing member 60, and the second terminal 50 is provided with a through hole. The fixing member 60 extends into the through hole and abuts against the second terminal 50 to be fixedly connected with the connecting member 22. The charging gun also includes a sealing gasket 70, and the sealing gasket 70 is arranged between the fixing member 60 and the second terminal 50 for sealing the through hole.

[0084] Specifically, the fixing member 60 extends into the through hole of the second terminal 50 and abuts against the second terminal 50 and the connector 22, thereby fixing the second terminal 50. The presence of the fixing member 60 ensures that the position of the second terminal 50 inside the charging gun will not move, enhances the overall mechanical strength of the device, and enables the second terminal 50 to stably withstand the current without loosening. The through hole provides a path in the second terminal 50 so that the fixing member 60 can enter through this hole and connect with the second terminal 50. The design of the through hole enables the fixing member 60 to be firmly embedded in the second terminal 50 and form a stable electrical and mechanical connection with the connector 22.

[0085] In a specific embodiment, the fixing member 60 is a screw, which threadably connects the second terminal 50 to the connecting member 22, so as to facilitate replacement and disassembly when damaged.

[0086] Furthermore, a sealing gasket 70 is disposed between the fixing member 60 and the second terminal 50 to seal the through hole and prevent external impurities such as water vapor and dust from entering the interior of the charging gun. The design of the fixing member 60 as a screw makes the disassembly process easier, without the need for special tools, saving time and cost.

[0087] In one embodiment, the second terminal 50 is a power terminal.

[0088] The above is only an implementation method of the present application. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present application, but these improvements are within the scope of protection of the present application.

Claims

1. A charging gun, characterized in that: include: The main body comprises a gun body and a gun head which cover each other, the gun body is provided with a receiving cavity, and the gun head part extends into and blocks the receiving cavity; A connecting assembly, comprising a fixing seat and a connecting piece arranged on the fixing seat, wherein the fixing seat is arranged in the accommodating cavity, the fixing seat is provided with a fixing hole communicating with the accommodating cavity, and the connecting piece comprises a sealing portion and a plug-in portion which are sequentially integrally arranged, the sealing portion extends into the fixing hole and is sealed and connected with the fixing hole; The first terminal is inserted into the plug-in portion and electrically connected to the sealing portion. One end of the first terminal facing away from the plug-in portion extends into the gun head and is sealed and connected to the gun head.

2. A charging gun according to claim 1, characterized in that: The charging gun comprises a first sealing member and a second sealing member disposed between the gun body and the gun head; One end of the gun head close to the gun body is inwardly recessed to form a first step surface, the first step surface is annularly arranged at the butt end of the gun head and extends into the accommodating cavity, one end of the first sealing member is annularly abutted against the step surface, and the other end is interference fit with the inner wall of the gun body; The gun head is provided with a plug hole, the first terminal extends into the plug hole, one end of the second sealing member abuts against the inner wall of the plug hole, and the other end is interference fit with the outer wall of the connector.

3. A charging gun according to claim 2, characterized in that: One end of the plug hole close to the connector is inwardly recessed to form a second step surface, and the second sealing member abuts against the second step surface; The charging gun includes a first sealing ring, which is sleeved on the outer wall of the first terminal and abuts against the inner wall of the plug hole.

4. A charging gun according to claim 1, characterized in that: The charging gun also includes a second sealing ring, which is sleeved on the outer wall of the connecting member and abuts against the inner wall of the fixing hole.

5. A charging gun according to claim 4, characterized in that: The connecting assembly further comprises a fixing block fixedly connected to the fixing seat, the fixing block extends into the fixing hole and abuts against the sealing portion, and the fixing block is attached to the inner wall of the fixing seat to fix the connecting piece; The side wall of the fixing seat and the fixing block are combined to form a glue injection cavity, and the glue injection cavity is filled with glue to seal the fixing hole.

6. A charging gun according to claim 1, characterized in that: The charging gun also includes a sealing sleeve mounted on the circumference of the fixing seat, the sealing sleeve separates the accommodating cavity to form a first cavity and a second cavity, the connecting component is arranged in the first cavity, and the sealing sleeve is used to isolate external water vapor from entering the connecting component.

7. A charging gun according to claim 1, characterized in that: The plug-in portion is provided with a countersunk hole, and the connecting assembly also includes an elastic clamping ring abutting against the inner wall of the countersunk hole. The plug-in end of the first terminal has a plug-in surface, and the elastic clamping ring has an elastic abutting surface, which abuts against the plug-in surface to fix the first terminal.

8. A charging gun according to claim 7, characterized in that: The elastic clamp includes a fixed portion and an elastic portion which are integrally arranged, and the fixed portion is arranged at two opposite ends of the elastic portion; The fixing portion abuts against the inner wall of the counterbore, the elastic portion abuts against the first terminal, and when viewed along the axial direction of the elastic clamping ring, the maximum inner diameter of the elastic portion is less than or equal to the minimum inner diameter of the fixing portion.

9. The charging gun according to claim 7, characterized in that: The connector also includes a limiting portion disposed at an end of the plug-in portion away from the sealing portion, and the limiting portion is used to limit the movement of the elastic clamping ring.

10. The charging gun according to claim 1, characterized in that: The charging gun further includes a second terminal fixedly connected to the connecting member, wherein the second terminal abuts against the connecting member; The charging gun also includes a fixing member, the second terminal is provided with a through hole, the fixing member extends into the through hole and abuts against the second terminal to be fixedly connected with the connecting member, and the charging gun also includes a sealing gasket, which is arranged between the fixing member and the second terminal and is used to seal the through hole.

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