Charging gun and charging equipment

Abstract

The embodiment of the utility model provides a charging gun and charging equipment, relates to the technical field of charging guns, and is used for solving the problem that a cable and a sealing structure are damaged when a gun body is replaced. And a gun body of the charging gun is arranged around the outer peripheral surface of the first cable shell and the outer peripheral surface of the second cable shell. The gun head comprises a plurality of connecting terminals, and each connecting terminal comprises a plugging end and a cable connecting end. The plugging end is used for connecting an electric vehicle. The cable connecting end is located in a cavity jointly defined by the first cable shell and the gun head. And the first cable shell is connected with the gun head. The second cable shell is connected with the first cable shell, the second cable shell is far away from the gun head compared with the first cable shell, and the cable penetrates through the second cable shell and the first cable shell to be connected with the cable connecting end. Two barriers are provided for the cable and the connecting position of the cable and the cable connecting end through the first cable shell and the second cable shell, so that the possibility that the cable is damaged when the gun body is replaced is reduced or avoided.

Description

Technical Field

[0001] This application relates to the field of charging gun technology, and more particularly to a charging gun and a charging device. Background Technology

[0002] A charging gun is a device used to plug into a charging socket of a device to be charged (such as a new energy vehicle) in order to charge the device.

[0003] The charging gun body is typically a split-half structure. The charging gun cable connects to the connector at the charging head, and is then encapsulated by a sealed housing. The housing and cable are sealed together using a sealant (such as a sealing ring). However, the charging gun body is prone to damage during use, often requiring replacement. This replacement process may damage the cable, the sealed housing, or the seal between the cable and housing, thus reducing the charging gun's safety. Utility Model Content

[0004] This application provides a charging gun and a charging device including the charging gun, with the aim of avoiding damage to the cable when replacing the gun body.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] A first aspect of this application provides a charging gun, which includes a gun body, a gun head, a cable, a first cable housing, and a second cable housing. The gun body is disposed around the outer peripheral surfaces of the first and second cable housings. The gun head includes a plurality of connection terminals, each connection terminal including a plug-in end and a cable connection end. The plug-in end is used to connect to an electric vehicle. The cable connection end is located within a cavity jointly enclosed by the first cable housing and the gun head. The first cable housing is connected to the gun head. The second cable housing is connected to the first cable housing, and the second cable housing is farther away from the gun head than the first cable housing. The cable passes through the second cable housing and the first cable housing and connects to the cable connection end.

[0007] The cable connection end of the connection terminal is connected to the cable, and the current transmitted by the cable can be led to the cable connection end, that is, the current transmitted by the cable can be led to the connection terminal. The current is transmitted along the connection terminal to the plug end. After the plug end is connected to the electric vehicle, the current can be transmitted to the electric vehicle through the plug end, and then used to charge the electric vehicle.

[0008] To reduce the possibility of the cable connection being broken due to external force, or of the connection point being affected by dust, liquid, or other impurities, thus impacting current transmission between the cable connection point (i.e., the connector) and the cable, the gun head is connected to the first cable housing. This ensures that after the cable passes through the first cable housing and connects to the cable connection point, the connection point between the cable and the cable connection point is located within the space enclosed by the first cable housing and the gun head.

[0009] The first cable housing provides an external barrier for the cable connector, the cable itself, and the connection points between the cable connectors, protecting them from damage. This reduces the likelihood of damage to the cable connector and the cable itself, or breakage of the connection between the cable connectors, caused by external forces (such as those applied by the user when replacing the gun body). Furthermore, the first cable housing also reduces the possibility of dust, liquids, and other impurities entering the gun head (including the cable connector) and the cable itself. This prevents dust, liquids, and other impurities from contacting the cable connector, the cable, and other components within the gun head, thus avoiding any impact on the reliability of the connection between the cable connectors or the reliability of other internal structures of the gun head.

[0010] To reduce the likelihood of damage to the cable located outside the first cable housing due to external forces (such as those applied by the user when replacing the gun body), or the possibility of the cable breaking at the connection point due to external forces pulling on the cable located outside the first cable housing, a second cable housing is connected to the side of the first cable housing away from the gun head.

[0011] The second cable housing provides an external barrier for the cable located within it, protecting it from damage caused by external forces, such as those applied during user replacement of the gun body. It also reduces the size of the cable exposed within the gun body, thereby decreasing the likelihood of the cable breaking at the connection point due to external pulling. Furthermore, the second cable housing further reduces the ingress of dust, liquids, and other impurities into the cable, or further reduces the possibility of these impurities entering the first cable housing, for example, through the holes in the first cable housing that allow the cable to pass through, and thus into the gun head.

[0012] Therefore, in the charging gun provided in this application, the first cable housing provides a first barrier for the cable inside the charging gun (the cable located within the first cable housing) and the connection points between the cable and the cable connectors. Thus, the first cable housing provides primary protection for the cable inside the charging gun (the cable located within the first cable housing) and the connection points between the cable and the cable connectors. The second cable housing provides a second barrier for the cable inside the charging gun (the cable located within the second cable housing) and the connection points between the cable and the cable connectors. Therefore, the reliability of the charging gun can be improved through the first and second cable housings.

[0013] In some examples, a sealing structure (e.g., the third seal mentioned below) is provided between the first cable housing and the cable. This sealing structure seals the gap between the cable and the first cable housing, reducing the possibility of dust, liquid, or other impurities entering the first cable housing through this gap. In this case, the second cable housing also protects the sealing structure between the cable and the first cable housing. Specifically, the second cable housing reduces the size of the cable exposed inside the gun body, thereby reducing the likelihood of external forces (such as those applied by the user when replacing the gun body) pulling the cable. This prevents the sealing structure from shifting and causing failure of the seal between the cable and the first cable housing.

[0014] In one alternative embodiment, a first seal is provided between the second cable housing and the cable on the side away from the first cable housing.

[0015] In this example, the first seal is used to seal the gap between the cable and the second cable housing, reducing the possibility of dust, liquid and other impurities entering the first cable housing from the gap between the cable and the second cable housing.

[0016] For example, the first sealing element includes a sealing ring, which is directly or indirectly fitted onto the outer periphery of the cable. Specifically, the inner surface of the sealing ring directly abuts against the outer periphery of the cable, or against the outer periphery of the component between the cable and the sealing ring. The outer side of the sealing ring abuts against the inner wall of the first cable housing. The sealing ring provides a stable sealing effect to ensure reliable sealing between the cable and the second cable housing.

[0017] In one optional embodiment, the side of the second cable housing away from the first cable housing includes a first connecting structure and a clamping structure, with the clamping structure being further away from the first cable housing than the first connecting structure. A first seal is disposed between the cable and the clamping structure. The charging gun also includes a locking sleeve fitted onto the second cable housing. The locking sleeve is connected to the first connecting structure and is used to press the clamping structure against the first seal.

[0018] The locking sleeve connects to the first connecting structure, ensuring that the clamping structure always presses against the first seal. The locking sleeve presses the clamping structure against the first seal, thus securing it and preventing it from detaching from the second cable housing.

[0019] In one optional embodiment, the clamping structure includes an annular structure disposed at the end of the second cable housing furthest from the first cable housing. The annular structure has multiple openings spaced apart along its circumferential direction. Each opening radially penetrates the annular structure and extends axially to the end face of the annular structure furthest from the first cable housing.

[0020] The multiple openings divide the ring structure into multiple strip-shaped structures. Each strip-shaped structure has one end near the first cable housing on the second cable housing 5, and the end away from the first cable housing forms a suspension end. The multiple openings are spaced apart along the circumferential direction of the ring structure, meaning the multiple strip-shaped structures are spaced apart along the circumferential direction of the ring structure.

[0021] In some examples, multiple openings can be evenly spaced along the circumferential direction of the annular structure, so that the multiple strip-shaped structures are evenly spaced along the circumferential direction of the annular structure, thereby ensuring that the annular structure is subjected to uniform force.

[0022] In one optional embodiment, the locking sleeve includes a second connecting structure and a protrusion, both disposed on the inner wall surface of the locking sleeve, with the second connecting structure closer to the first cable housing than the protrusion. The second connecting structure is connected to the first connecting structure. The protrusion protrudes from the inner wall surface of the locking sleeve and abuts against the outer peripheral surface of the clamping structure.

[0023] The second connecting structure connects to the first connecting structure to connect the locking sleeve and the second cable housing. It also ensures that the protrusion always abuts against the outer peripheral surface of the clamping structure, so that the clamping structure always presses against the first seal. Since the inner diameter of the locking sleeve at the protrusion is smaller than the outer diameter of the clamping structure, after connection, the protrusion abuts against the end of the clamping structure away from the first cable housing, pressing the clamping structure against the first seal. The pressure exerted on the first seal by the clamping structure keeps the first seal pressed, thus preventing it from detaching from the second cable housing.

[0024] In this example, the distance between the surface of the protrusion away from the inner wall of the lock sleeve and the inner wall of the lock sleeve gradually increases in the direction from which the protrusion moves away from the second connecting structure.

[0025] Thus, during the connection process between the second connecting structure and the first connecting structure, the pressure of the protrusion on the pressing structure gradually increases. After the connection between the second connecting structure and the first connecting structure is completed, the pressure of the protrusion on the pressing structure is at its maximum, that is, the pressure of the pressing structure on the first sealing element is at its maximum.

[0026] In one alternative embodiment, the protrusion is arranged around the inner wall surface of the lock sleeve.

[0027] This can be understood as the protrusion being annular. The protrusion is fitted onto the clamping structure, and its inner wall surface abuts against the outer circumferential surface of the clamping structure. Because the protrusion is annular, the force from the protrusion can be applied evenly to the clamping structure along its circumferential direction. This ensures uniform stress on the clamping structure and prevents damage to the clamping structure itself or the first seal within the clamping structure due to uneven stress.

[0028] In other examples, the protrusion is located on one side of the clamping structure, and the surface of the protrusion away from the inner wall of the locking sleeve abuts against the outer peripheral surface of the clamping structure, pressing the clamping structure toward the side of the protrusion away from the clamping structure.

[0029] In one alternative implementation, the first connection structure includes a first threaded structure.

[0030] This makes it easy to process, and the threaded structure ensures high connection reliability.

[0031] In one alternative implementation, the second connection structure includes a second threaded structure.

[0032] This design facilitates processing and ensures high reliability of threaded connections.

[0033] In one optional embodiment, the inner wall surface of the second cable housing is provided with a protrusion, which is closer to the first cable housing than the first seal; the protrusion protrudes from the inner wall surface of the second cable housing, and the surface of the protrusion away from the first cable housing abuts against the first seal.

[0034] That is, the surface of the protrusion away from the first cable housing serves as a limiting surface. After the first seal is installed, the end face of the first seal abuts against the limiting surface of the protrusion. Therefore, the protrusion restricts the movement of the first seal in the direction close to the first cable housing, preventing the first seal from falling off from the side near the gun head into the second cable housing, thus avoiding a seal failure between the second cable housing and the protective sleeve.

[0035] In one alternative embodiment, the charging gun further includes a protective sleeve that is fitted over the cable. A first seal is fitted over the protective sleeve.

[0036] In some examples, one end of the protective sleeve extends into the second cable housing, while the other end extends from the side of the gun body away from the gun head.

[0037] By setting up protective sleeves, the cables can be protected, and when there are multiple cables, the protective sleeves can be placed over multiple cables to improve the appearance of the charging gun.

[0038] In this example, the first seal is used to seal the gap between the protective sleeve and the second cable housing, reducing the possibility of dust, liquid and other impurities entering the first cable housing from the gap between the protective sleeve and the second cable housing.

[0039] For example, the first sealing element may include a sealing ring, which is fitted onto the protective sleeve, with the inner side of the sealing ring abutting against the outer circumferential surface of the protective sleeve and the outer side of the sealing ring abutting against the inner wall of the first cable housing. The sealing ring has a stable sealing effect to ensure the reliability of the seal between the protective sleeve and the second cable housing.

[0040] In one alternative embodiment, a second seal is provided between the first cable housing and the second cable housing.

[0041] The second seal is used to seal the gap at the connection between the first cable housing and the second cable housing, reducing the possibility of dust, liquid and other impurities entering the first cable housing from the gap at the connection between the first cable housing and the second cable housing.

[0042] For example, the second seal may include a sealing ring, which is fitted onto the first cable housing, with its inner side abutting against the outer circumferential surface of the first cable housing and its outer side abutting against the inner wall of the second cable housing. The sealing ring provides a stable sealing effect to ensure reliable sealing between the first and second cable housings.

[0043] In other examples, the second seal may be located in other positions, for example, the second seal may include a sealing ring disposed on opposite end faces between the first cable housing and the second cable housing, and the seal abuts against the two end faces respectively.

[0044] In one alternative embodiment, the end of the first cable housing away from the gun head includes a first hole for the cable to pass through, and the second cable housing is partially fitted around the outer periphery of the first cable housing, with the first hole extending into the second cable housing.

[0045] In this way, the second cable housing can protect the sealing structure between the first hole and the cable, so as to prevent the part of the first cable housing with the second hole from deforming under external force during use or maintenance, which would lead to the failure of the seal between the second hole and the cable.

[0046] In addition, the second cable housing can reduce the possibility of seal failure caused by dust, liquids and other impurities coming into contact with the sealing structure between the first hole and the cable (e.g., corrosion, scratches).

[0047] In one alternative embodiment, a third seal is provided between the first hole and the cable.

[0048] The third seal is used to seal the gap between the cable and the first hole, reducing the possibility of dust, liquid and other impurities entering the first cable housing through the first hole.

[0049] For example, the third sealing element may include a sealing ring, which is fitted onto the cable, with its inner side abutting against the outer circumference of the cable and its outer side abutting against the inner wall of the first hole. The sealing ring provides a stable sealing effect to ensure reliable sealing between the first hole and the cable.

[0050] In one optional embodiment, a first connecting plate is provided on the outer periphery of the end of the first cable housing away from the gun head, and a second connecting plate is provided on the outer periphery of the end of the second cable housing close to the gun head; the end faces of the first connecting plate and the second connecting plate abut against each other, and the first connecting plate and the second connecting plate are fixedly connected.

[0051] In some examples, the first connecting plate and the second connecting plate are detachably connected together to facilitate the replacement and maintenance of the second cable housing and to allow the user to easily view the internal cables.

[0052] For example, the first connecting plate and the second connecting plate are connected by fasteners, that is, the fasteners pass through the first connecting plate and the second connecting plate in sequence to connect the first connecting plate and the second connecting plate together.

[0053] In one alternative embodiment, a fourth seal is provided between the first cable housing and the gun head.

[0054] The fourth seal is used to seal the gap at the connection between the first cable housing and the gun head, reducing the possibility of dust, liquid and other impurities entering the gun body and the first cable housing from the gap at the connection between the first cable housing and the gun head.

[0055] For example, the fourth sealing element may include a sealing ring disposed between the end face of the first cable housing facing the gun head and the end face of the gun head facing the first cable housing. One axial end of the sealing ring abuts against the end face of the cable housing facing the gun head, and the other end abuts against the end face of the gun head facing the first cable housing. The sealing ring provides a stable sealing effect to ensure reliable sealing at the connection between the first cable housing and the gun head.

[0056] A second aspect of this application provides a charging device, wherein the charging gun includes a power module and the charging gun described above, and the charging gun and the power module are electrically connected by a cable.

[0057] The power module can convert electrical energy into different forms, such as alternating current (AC) to direct current (DC), and then transmit the converted electrical energy to the charging gun, which can be connected to the electric vehicle to charge it.

[0058] In addition, the charging device provided in this application includes the aforementioned charging gun. Therefore, the charging device provided in this application and the charging gun of the aforementioned technical solution can solve the same technical problem and have the same technical effect, which will not be repeated here. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the structure of a charging device provided in an embodiment of this application;

[0060] Figure 2 This is a schematic diagram of the structure of a charging gun provided in an embodiment of this application;

[0061] Figure 3 A partial exploded view of a charging gun provided in an embodiment of this application;

[0062] Figure 4 This is a partial structural diagram of a charging gun provided in an embodiment of this application, with the second cable housing removed;

[0063] Figure 5 for Figure 4 A partial structural diagram of the charging gun, with the pressure cap removed;

[0064] Figure 6 for Figure 4 A magnified view of the Q position;

[0065] Figure 7 This is a partial structural diagram of a charging gun provided in an embodiment of this application, with the gun body removed;

[0066] Figure 8 for Figure 7 A partial structural diagram of the internal structure of the charging gun;

[0067] Figure 9 for Figure 7 A partial structural diagram of the charging gun;

[0068] Figure 10 for Figure 7 A schematic diagram of the internal structure of the locking sleeve.

[0069] Figure label:

[0070] 100-Charging equipment;

[0071] 10 - Charging gun; 20 - Power module; 30 - Liquid cooling module; 40 - Housing;

[0072] 1-Gun body; 11-First gun body section; 12-Second gun body section; 13-Third gun body section;

[0073] 2-Gunhead; 21-Connecting terminal; 211-Plug-in terminal; 212-Cable connection terminal; 22-First latch;

[0074] 3-Cable; 31-Connector;

[0075] 4-First cable housing; 41-First hole; 42-First connecting plate; 43-Card plate; 431-First slot; 44-Second buckle;

[0076] 5-Second cable housing; 51-First connecting structure; 511-First threaded structure; 52-Crimping structure; 521-Annular structure; 522-Opening; 53-Protrusion; 54-Second connecting plate;

[0077] 61-First seal; 62-Second seal; 63-Third seal; 64-Fourth seal;

[0078] 7-Locking sleeve; 71-Second connecting structure; 711-Second threaded structure; 72-Protrusion;

[0079] 8-Protective cover;

[0080] 9-Cover; 91-Connecting plate; 911-Second slot; 92-Second hole. Detailed Implementation

[0081] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0082] In this application, unless otherwise expressly specified and limited, the terms "upper", "lower", "front", "back", "left", "right", etc., indicating orientation or positional relationship may be defined relative to the orientation of the components schematically placed in the accompanying drawings. These directional terms may be relative concepts, used for relative description and clarification, and may change accordingly depending on the orientation of the components in the accompanying drawings. They should not be construed as limitations on this application.

[0083] In this application, the terms "first," "second," etc., are used for descriptive purposes only to distinguish one element from another, and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0084] In this application, unless otherwise expressly stated and limited, "multiple" means two or more.

[0085] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines or channels, the terms "connection" and "linkage" as used in this application have the meaning of establishing electrical conductivity. The specific meaning needs to be understood in conjunction with the context.

[0086] Furthermore, in this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0087] This application provides a charging device that can be connected to a device to be charged, such as a vehicle, to charge the device. The charging device can be a charging station, a portable charger, etc., and this application does not limit the type of charging device.

[0088] Figure 1 An exemplary structure of a charging device 100 is shown. (Refer to...) Figure 1 The charging device 100 includes a power module 20 and a charging gun 10, and the power module 20 and the charging gun 10 are connected by a cable 3.

[0089] The power module 20 is capable of converting electrical energy into electrical energy. The electrical energy converted by the power module 20 is transmitted to the charging gun 10 through the cable 3. The charging gun 10 can be connected to the device to be charged, such as an electric vehicle, to charge the device.

[0090] The power module 20 can convert electrical energy in various ways. For example, in some examples, the power module can be used to convert alternating current (AC) to direct current (DC). In other examples, the power module 20 is used to convert DC to DC with different voltage, current, or power levels. This application does not impose any special limitations on the form of electrical energy conversion by the power module 20.

[0091] In some examples, refer to Figure 1 The charging device 100 includes a housing 40, a power module 20 disposed inside the housing 40, a charging gun 10 disposed outside the housing 40, and a cable 3 with one end connected to the power module 20 and the other end passing through the housing 40 and connected to the charging gun 10.

[0092] In other examples, the power module 20 may be located in other devices and connected to the charging gun 10 via cable 3.

[0093] exist Figure 1 In the illustrated embodiment, cable 3 can be any type of cable, such as a liquid-cooled cable. Furthermore, the number of cables 3 can be set according to actual needs. This application does not impose any special restrictions on the form or number of cables 3.

[0094] In the example where cable 3 is a liquid-cooled cable, the charging device 100 may also include a liquid-cooling module 30. The liquid-cooling channel (e.g., liquid-cooling pipe) in the cable 3 is connected to the liquid-cooling module 30. The liquid-cooling channel contains a cooling medium, which is used to remove heat from inside the cable 3, or from inside the cable 3 and the charging gun 10, and transfer the heat to the liquid-cooling module 30 through the liquid-cooling channel.

[0095] In some examples, refer to Figure 1 A protective sleeve 8 is fitted onto the cable 3. The protective sleeve 8 serves two purposes: firstly, it protects the internal cable 3; secondly, when there are multiple cables 3, the protective sleeve 8 is fitted onto multiple cables 3 to improve the aesthetic appearance of the charging device 100.

[0096] Figure 2 An exemplary schematic diagram of a charging gun 10 applied in the aforementioned charging device 100 is shown. (Refer to...) Figure 2 The charging gun 10 includes a gun body 1 and a gun head 2. The gun head 2 is connected to the gun body 1; for example, a portion of the gun head 2 is inserted into the gun body 1. A cable 3 is inserted into the gun body 1, and a protective sleeve 8 is fitted onto the cable 3.

[0097] Figure 3 An example is shown Figure 2 A partial exploded view of the charging gun 10. (Refer to...) Figure 3The gun body 1 includes a first gun body portion 11, a second gun body portion 12, and a third gun body portion 13. The second gun body portion 12 is located between the first gun body portion 11 and the third gun body portion 13, and is connected to both the first gun body portion 11 and the third gun body portion 13. The end of the first gun body portion 11 away from the second gun body portion 12 and the end of the third gun body portion 13 away from the second gun body portion 12 are connected. The split gun body 1 facilitates the connection and maintenance of the internal structure of the charging gun 10.

[0098] In this example, there are multiple ways to connect the first gun body part 11, the second gun body part 12, and the third gun body part 13 in pairs. For example, the first gun body part 11, the second gun body part 12, and the third gun body part 13 can be connected by snap-fit ​​connections in pairs, which is simple and convenient to operate. This application embodiment does not impose any special limitations on this.

[0099] In other examples, the gun body 1 can also be a one-piece gun body.

[0100] exist Figure 3 In the example charging gun 10, the charging gun 10 also includes a first cable housing 4 and a second cable housing 5. One end of the first cable housing 4 is connected to the gun head 2, and the other end is connected to the second cable housing 5.

[0101] Figure 4 An exemplary partial structural schematic diagram of a charging gun 10 is shown. (Refer to...) Figure 4 The first cable housing 4 is connected to the gun head 2, and one end of the cable 3 passes through the first cable housing 4 to connect to the gun head 2.

[0102] Wherein, after the cable 3 passes through the first cable housing 4 and connects to the gun head 2, the connection point between the cable 3 and the gun head 2 can be located in the cavity jointly enclosed by the first cable housing 4 and the gun head 2.

[0103] For example, in some examples, the structure on the gun head 2 for connecting to the cable 3 (i.e., the cable connection end described below) extends into the first cable housing 4. Therefore, after the cable 3 is connected to the gun head 2, the connection point between the cable 3 and the gun head 2 is located inside the first cable housing 4.

[0104] In other examples, the structure on the gun head 2 for connecting to the cable 3 (i.e., the cable connection end described below) does not extend into the first cable housing. After the cable 3 is connected to the gun head 2, the connection point between the cable 3 and the gun head 2 may be located inside the gun head 2 or between the first cable housing 4 and the gun head 2. This application does not specifically limit the location of the connection point between the cable 3 and the gun head 2.

[0105] The first cable housing 4 provides an external barrier for the cable 3, the gun head 2, and the connection between the cable 3 and the gun head 2, thus protecting them. On one hand, it reduces the possibility of damage to the cable 3 and gun head 2 caused by external forces (such as the force applied to the cable 3 and gun head 2 when the user replaces the gun body 1), and the possibility of the connection between the cable 3 and gun head 2 being broken by external forces (such as the force applied to the cable 3 when the user replaces the gun body 1), ensuring the reliability of the connection between the cable 3 and the gun head 2. On the other hand, it also reduces the possibility of dust, liquids, and other impurities entering the gun head and cable, thereby preventing dust, liquids, and other impurities from affecting the reliability of the connection between the gun head 2, the cable 3, and the connection between the gun head 2 and the cable 3, or the reliability of other internal structures of the gun head 2.

[0106] Reference Figure 4 The charging gun 10 also includes a protective sleeve 8, which is fitted onto the cable 3. Part of the protective sleeve 8 is located inside the gun body 1, and part of it is located outside the gun body 1. The protective sleeve 8 serves two purposes: firstly, it protects the internal cable 3; secondly, when there are multiple cables 3, the protective sleeve 8 is fitted onto multiple cables 3 to improve the aesthetic appearance of the charging gun 10.

[0107] In this example, the cable 3 contained in the protective sleeve 8 can be one or more to meet different connection requirements.

[0108] There are several ways to connect the first cable housing 4 to the gun head 2, for example, referring to... Figure 4 The outer periphery of the gun head 2 is provided with a first buckle 22, and the side of the first cable housing 4 facing the gun head 2 is provided with a card plate 43. The card plate 43 is provided with a first card groove 431. The first buckle 22 is connected to the first card groove 431, thereby realizing the connection between the gun head 2 and the first cable housing 4.

[0109] In some examples, there may be multiple first latches 22, which are evenly spaced circumferentially on the outer peripheral surface of the gun head 2 to improve the connection reliability between the gun head 2 and the first cable housing 4. The number of first slots 431 is the same as the number of first latches 22 and they are connected in a one-to-one correspondence.

[0110] In other embodiments, the first cable housing 4 and the gun head 2 can also be connected in other ways, such as by welding. This application does not specifically limit the connection method between the first cable housing 4 and the gun head 2.

[0111] Figure 5 for Figure 4 A partial structural diagram. (Refer to...) Figure 5The first cable housing 4 has a first hole 41 at the end away from the gun head 2 for the cable 3 to pass through. A third seal 63 is provided between the first hole 41 and the cable 3. The third seal 63 is used to seal the gap between the cable 3 and the first hole 41, reducing the possibility of dust, liquid and other impurities entering the first cable housing 4 through the first hole 41.

[0112] The third seal 63 can be any structure capable of providing a seal; in one example, refer to... Figure 5 The third sealing element 63 may include a sealing ring. The third sealing element 63 is sleeved on the cable 3, and the outer side of the third sealing element 63 abuts against the inner wall of the first hole 41, and the inner side of the third sealing element 63 abuts against the outer peripheral surface of the cable 3. In this way, the gap between the first hole 41 and the cable 3 can be sealed by the third sealing element 63, so as to reduce the possibility of dust, liquid and other impurities entering the first cable housing 4 from the first hole 41.

[0113] During use, the third seal 63 may come out of the first hole 41. To prevent the seal between the first hole 41 and the cable 3 from failing due to the third seal 63 coming out of the first hole 41, the third seal 63 can be positioned so that it is always located between the first hole 41 and the cable 3.

[0114] Figure 6 for Figure 4 A magnified view of the Q position. In some examples, refer to... Figure 5 and Figure 6 The charging gun 10 also includes a pressure cap 9, which is located on the side of the first cable housing 4 away from the gun head 2. The pressure cap 9 is connected to the first cable housing 4, and the surface of the pressure cap 9 facing the first hole 41 is in contact with the surface of the first cable housing 4 where the first hole 41 is provided. A second hole 92 for the cable 3 to pass through is provided on the surface of the pressure cap 9 facing the first hole 41. The second hole 92 communicates with the first hole 41, and the inner diameter of the second hole 92 is smaller than the inner diameter of the first hole 41.

[0115] For example, a first hole 41 is provided on the surface a of the first cable housing 4, and the pressure cover 9 has a surface b facing the first hole 41. Surface b is in contact with surface a. A second hole 92 is provided on surface b for the cable 3 to pass through. The second hole 92 is connected to the first hole 41. In this way, the cable 3 can pass through the second hole 92 and the first hole 41 in sequence to enter the first cable housing 4, and then be used to connect the cable 3 to the gun head 2.

[0116] To achieve a seal between the first hole 41 and the cable 3, the third sealing element 63, such as a sealing ring, needs to abut against the inner wall of the first hole 41 and the outer circumferential surface of the cable 3. This can be understood as follows: after the third sealing element 63 is placed between the cable 3 and the first hole 41, it is compressed, and the outer diameter of the compressed third sealing element 63 is approximately the inner diameter of the first hole 41. The inner diameter of the second hole 92 is smaller than the inner diameter of the first hole 41, meaning that the outer diameter of the third sealing element 63 after being compressed within the first hole 41 is greater than or equal to the inner diameter of the second hole 92. Therefore, after the surface of the pressure cap 9 with the second hole 92 contacts the surface of the first cable housing 4 with the first hole 41, the surface surrounding the second hole 92 can partially abut against the surface of the third sealing element 63, thereby restricting the movement of the third sealing element 63. That is, the pressure cap 9 can limit the movement of the third sealing element 63 away from the nozzle 2, thus preventing the third sealing element 63 from detaching from the first hole 41.

[0117] In some examples, a limiting member (not shown in the figure) can be provided on the inner wall of the first hole 41, closer to the gun head 2 than the third seal 63. The limiting member protrudes from the inner wall surface of the first hole 41, and the surface of the limiting member away from the gun head 2 abuts against the third seal 63, so as to restrict the movement of the third seal 63 toward the gun head 2. That is, the setting of the limiting member can limit the movement of the third seal 63 toward the gun head 2, thereby preventing the third seal 63 from coming out of the first hole 41 from the side closer to the gun head 2.

[0118] Reference Figure 5 and Figure 6 Multiple first holes 41 and multiple second holes 92 can be provided. The number of first holes 41 and the number of second holes 92 can be the same. For example, each first hole 41 has a corresponding second hole 92 on the side away from the gun head 2. In other examples, the number of first holes 41 and the number of second holes 92 can also be different. For example, multiple cables 3 pass through the same first hole 41, and the third seals 63 fitted on the multiple cables 3 are integrated together. In this case, only one second hole 92 can be provided, and the size of the second hole 92 is smaller than the size of the first hole 41.

[0119] Furthermore, when multiple first holes 41 are provided, the multiple first holes 41 can be provided on the same surface of the first cable housing 4, or they can be provided on different surfaces of the first cable housing 4. In some examples, the gland 9 can have multiple surfaces, the number of which is the same as the number of surfaces on which the multiple first holes 41 are located, and they are provided in a one-to-one correspondence. For example, a portion of the multiple first holes 41 are provided on surface a of the first cable housing 4, and another portion are provided on surface b of the first cable housing 4. Correspondingly, the gland 9 is provided with a surface c that contacts surface a and a surface d that contacts surface b.

[0120] In other examples, multiple pressure caps 9 may be provided, each pressure cap 9 having a surface that contacts the surface where the first hole 41 is located. The number of multiple pressure caps 9 is the same as the number of multiple surfaces where the first hole 41 is located, and they are provided in a one-to-one correspondence. This application embodiment does not impose any limitations on this.

[0121] The connection method between the pressure cap 9 and the first cable housing 4 can be varied, for example, referring to... Figure 6 The pressure cap 9 includes a connecting plate 91, which is connected to the first cable housing 4. The connection method between the connecting plate 91 and the first cable housing 4 can be varied, for example, referring to... Figure 6 The connecting plate 91 is provided with a second slot 911, and the outer periphery of the first cable housing 4 is provided with a second buckle 44. The second buckle 44 is accommodated in the second slot 911 to realize the connection between the second buckle 44 and the second slot 911, thereby connecting the connecting plate 91 and the first cable housing 4 together.

[0122] In some examples, the second slot 911 may include multiple slots, and the number of connecting plates 91 is the same as the number of second slots 911, with each connecting plate 91 having one second slot 911. Correspondingly, the second buckle 44 includes multiple buckles, and the number of second slots 911 is the same as the number of second buckles 44, and they are connected one-to-one. The multiple second buckles 44 are evenly spaced circumferentially on the outer peripheral surface of the first cable housing 4, allowing the first cable housing 4 to be connected to the pressure cover 9 at multiple circumferential positions, thus improving the reliability of the connection between the first cable housing 4 and the pressure cover 9.

[0123] In other embodiments, the connecting plate 91 and the first cable housing 4 can also be connected in other ways, such as bolted connection, adhesive connection, etc. This application does not specifically limit the connection method between the first cable housing 4 and the connecting plate 91.

[0124] Figure 7 An exemplary partial structural diagram of a charging gun is shown; the gun body 1 has been removed to avoid interference. (Refer to...) Figure 7 The second cable housing 5 is connected to the first cable housing 4.

[0125] Reference Figure 7 A first connecting plate 42 is provided on the outer periphery of the end of the first cable housing 4 furthest from the gun head 2, and a second connecting plate 54 is provided on the outer periphery of the end of the second cable housing 5 closest to the gun head 2. The end face of the first connecting plate 42 abuts against the end face of the second connecting plate 54, and the first connecting plate 42 and the second connecting plate 54 are fixedly connected. The first cable housing 4 and the second cable housing 5 are connected together through the connection of the first connecting plate 42 and the second connecting plate 54.

[0126] In some examples, the first connecting plate 42 and the second connecting plate 54 are detachably connected together. For instance, the first connecting plate 42 and the second connecting plate 54 are connected by fasteners that pass through the first connecting plate 42 and the second connecting plate 54 in sequence to connect them together. This detachable connection facilitates the replacement and maintenance of the second cable housing 5 and also allows the user to easily view the internal cables of the gun body 1.

[0127] Figure 8 for Figure 7 A partial structural diagram of the internal structure of the charging gun. (Refer to...) Figure 5 and Figure 8 The first connecting plate 42 is closer to the gun head 2 than the first hole 41. During connection, a portion of the second cable housing 5 needs to be fitted onto the first cable housing 4, with the first hole 41 located inside the second cable housing 5. This ensures that the third sealing element 63 inside the first hole 41 is located inside the second cable housing 5. In this way, the second cable housing 5 can provide protection for the seal between the first cable housing 4 and the cable 3 (i.e., the third sealing element 63), preventing the portion of the first cable housing 4 with the third sealing element 63, i.e., the portion of the first cable housing 4 located inside the second cable housing 5, from deforming under external force during use or maintenance, thus avoiding the failure of the seal between the first cable housing 4 and the cable 3.

[0128] In addition, the second cable housing 5 can also reduce the possibility of dust, liquid and other impurities coming into contact with the third seal 63 between the first cable housing 4 and the cable 3, which could lead to seal failure between the first cable housing 4 and the cable 3.

[0129] Reference Figure 7 and Figure 8 A second sealing element 62 is provided between the first cable housing 4 and the second cable housing 5. The second sealing element 62 is used to seal the gap at the connection between the first cable housing 4 and the second cable housing 5, reducing the possibility of dust, liquid and other impurities entering the first cable housing 3 through the gap at the connection between the first cable housing 4 and the second cable housing 5.

[0130] The second seal 62 can be any structure capable of providing a seal. In some examples, refer to... Figure 8The second sealing element 62 may include a sealing ring, which is fitted onto the outer circumferential surface of the first cable housing 4, i.e., the sealing ring is arranged circumferentially around the first cable housing 4. The sealing ring has an annular structure, and its inner radial surface abuts against the outer circumferential surface of the first cable housing 4, while its outer radial surface abuts against the inner wall of the second cable housing 5. The sealing ring has a stable sealing effect, and by sealing the gap between the first cable housing 4 and the second cable housing 5, it can block the gap, thereby reducing the possibility of dust, liquid, and other impurities entering the second cable housing 5 and the first cable housing 4 from the gap between the two housings. This ensures the reliability of the seal between the first cable housing 4 and the second cable housing 5.

[0131] In other embodiments, the second sealing element 62 can also be disposed in other locations. For example, the first connecting plate 42 and the second connecting plate 54 can be annular plates, that is, the first connecting plate 42 is disposed around the outer peripheral surface of the first cable housing 4, and the second connecting plate 54 is disposed around the outer peripheral surface of the second cable housing 5. The end face of the first connecting plate 42 abuts against the end face of the second connecting plate 54, and the first connecting plate 42 and the second connecting plate 54 are fixedly connected. In this case, the second sealing element 62 can be an annular structure, such as a sealing ring. The second seal 62 can be disposed between the first connecting plate 42 of the first cable housing 4 and the second connecting plate 54 of the second cable housing 5. One end of the second seal 62 abuts against the end face of the first connecting plate 42 facing the second connecting plate 54, and the other end abuts against the end face of the second connecting plate 54 facing the first connecting plate 42. Thus, the second seal 62 can seal the gap between the first connecting plate 42 and the second connecting plate 54, that is, the second seal 62 can seal the gap between the first cable housing 4 and the second cable housing 5, thereby reducing the possibility of dust, liquid, and other impurities entering the second cable housing 5 and the first cable housing 4 from the gap between the first cable housing 4 and the second cable housing 5. In some examples, the end face of the first connecting plate 42 facing the second connecting plate 54, or the end face of the second connecting plate 54 facing the first connecting plate 42, can be provided with a sealing groove. The second seal 62 is installed in the sealing groove, and the sealing groove achieves the installation and positioning of the second seal 62. This application embodiment does not specifically limit the placement of the second seal 62.

[0132] Reference Figure 7 and Figure 8The end of the second cable housing 5 furthest from the first cable housing 4 is connected to the protective sleeve 8. This allows the cable 3 exposed outside the protective sleeve 8 to be housed within the first cable housing 4 and the second cable housing 5. The first cable housing 4 and the second cable housing 5 provide protection for the cable 3 exposed outside the protective sleeve 8, preventing damage to the cable 3 and its seals during use or maintenance.

[0133] Reference Figure 7 and Figure 8 The gun head 2 includes multiple connection terminals 21, each connection terminal 21 including a plug end 211 and a cable connection end 212. The plug end 211 is used for connection with a vehicle, and the cable connection end 212 is connected to the connection end 31 of the cable 3. The end of the cable 3 away from the gun head 2 extends from the end of the second cable housing 5 away from the gun head 2 to connect to an external device (such as the power module of a charging device).

[0134] The cable connection end 212 of the connection terminal 21 is electrically connected to the connection end 31. The current transmitted by the cable 3 is led to the cable connection end 212 of the gun head 2. That is, the current transmitted by the cable 3 can be led to the connection terminal 21. The current is transmitted along the connection terminal 21 to the plug end 211. After the plug end 211 is connected to the electric vehicle, the current can be transmitted to the electric vehicle through the plug end 211, and then used to charge the electric vehicle.

[0135] In some examples, the connector 31 is located inside the first cable housing 4, that is, the connection point between the connector 31 and the cable connector 212 is located inside the first cable housing 4. In other examples, the connector 31 extends into the gun head 2, that is, the connection point between the connector 31 and the cable connector 212 is located inside the gun head.

[0136] The first cable housing 4 provides an external barrier for the cable connector 212, the cable 3, and the connection between the cable connector 212 and the cable 3, thus protecting them. On one hand, it prevents damage to the cable connector 212 and the cable 3, and the connection between the cable connector 212 and the connection end 31, caused by external forces (such as those applied by the user when replacing the gun body), ensuring the reliability of the connection between the cable connector 212 and the connection end 31. On the other hand, it reduces the possibility of dust, liquids, and other impurities entering the gun head 2 (including the cable connector 212) and the cable 3, thereby preventing dust, liquids, and other impurities from contacting the cable connector 212, the cable 3 (including the connection end 31), and other components inside the gun head 2, which could affect the reliability of the connection between the cable connector 212 and the connection end 31 or the reliability of other structures inside the gun head 2.

[0137] There are various ways to connect the cable connector 212 and the cable 3 connector 31, such as soldering or plugging. This application does not impose any special restrictions on the specific connection method of the cable connector 212 and the cable 3 connector 31.

[0138] In this example, cable 3 may include one or more, and this application does not specifically limit the number of cables 3.

[0139] To further prevent dust, liquids, and other impurities from entering the gun head 2 and the first cable housing 4, a fourth seal 64 is provided between the first cable housing 4 and the gun head 2. The fourth seal 64 is used to seal the gap at the connection between the first cable housing 4 and the gun head 2, reducing the possibility of dust, liquids, and other impurities entering the gun body 1 and the first cable housing 4 from the gap at the connection between the first cable housing 4 and the gun head 2.

[0140] The fourth seal 64 can be any structure capable of providing a seal. (See reference...) Figure 8 The gun head 2 is snapped together with the first cable housing 4 (e.g., Figure 4 A first latch 22 is provided on the outer peripheral surface of the gun head 2. A retaining plate 43 is provided on the side of the first cable housing 4 facing the gun head 2. A first retaining groove 431 is provided on the retaining plate 43. The first latch 22 is connected to the first retaining groove 431 to connect the gun head 2 and the first cable housing 4. The end face of the gun head 2 facing the first cable housing 4 is opposite to the end face of the first cable housing 4 facing the gun head 2. The fourth sealing element 64 can be a ring structure, such as a sealing ring. The second sealing element 62 is provided between the end face of the first cable housing 4 facing the gun head 2 and the end face of the gun head 2 facing the first cable housing 4. One end of the second sealing element 62 abuts against the end face of the first cable housing 4 facing the gun head 2 in its own axial direction, and the other end abuts against the end face of the gun head 2 facing the first cable housing 4. That is, the fourth seal 64 can seal the gap between the first cable housing 4 and the gun head 2, thereby reducing the possibility of dust, liquid, and other impurities entering the gun head 2 and the first cable housing 4 through the gap between the first cable housing 4 and the gun head 2, so as to ensure the sealing reliability between the connection between the first cable housing 3 and the gun head 2. In some examples, the end face of the first cable housing 4 facing the gun head 2, or the end face of the gun head 2 facing the first cable housing 4, can be provided with a sealing groove, and the fourth seal 64 is installed in the sealing groove to achieve the installation and positioning of the fourth seal 64.

[0141] In other embodiments, the fourth seal 64 can also be disposed in other locations, for example, a portion of the nozzle 2 is inserted into the first cable housing 4. In this case, the fourth seal 64 can be an annular structure, such as a sealing ring, which can be fitted onto the outer peripheral surface of the nozzle 2 facing the first cable housing 4, with the inner radial surface of the fourth seal 64 abutting against the outer peripheral surface of the nozzle 2, and the outer radial surface of the fourth seal 64 abutting against the inner wall surface of the first cable housing 4. In this way, the fourth seal 64 can seal the gap between the nozzle 2 and the first cable housing 4, thereby reducing the possibility of dust, liquid, and other impurities entering the nozzle 2 and the first cable housing 4 through the gap between them. The embodiments of this application do not impose any special limitation on the placement of the fourth seal 64.

[0142] Reference Figure 8 A first sealing element 61 is provided between the side of the second cable housing 5 away from the first cable housing 4 and the protective sleeve 8.

[0143] The first sealing element 61 is used to seal the gap between the second cable housing 5 and the protective sleeve 8, reducing the possibility of dust, liquid and other impurities entering the second cable housing 5 from the gap between the second cable housing 5 and the protective sleeve 8.

[0144] The first sealing element 61 can be any structure capable of providing a sealing function. In one example, refer to... Figure 8 and Figure 9 The first sealing element 61 can be a sealing ring. The first sealing element 61 is sleeved on the protective sleeve 8, and the outer peripheral surface of the first sealing element 61 in the radial direction abuts against the inner wall surface of the second cable housing 5, and the inner surface of the first sealing element 61 in the radial direction abuts against the outer peripheral surface of the protective sleeve 8. In this way, the gap between the protective sleeve 8 and the second cable housing 5 can be sealed by the first sealing element 61, so as to reduce the possibility of dust, liquid and other impurities entering the second cable housing 5 from the gap between the protective sleeve 8 and the second cable housing 5.

[0145] In other embodiments, the charging gun 10 may not include the protective sleeve 8, and the first seal 61 is disposed between the second cable housing 5 on the side away from the first cable housing 4 and the cable 3. In this case, the first seal 61 is fitted onto the cable 3 to seal the gap between the second cable housing 5 and the cable 3, reducing the possibility of dust, liquid, or other impurities entering the second cable housing 5 from the gap between the second cable housing 5 and the cable 3.

[0146] To prevent the first seal 61 from detaching from the side of the second cable housing 5 closest to the first cable housing 4, refer to Figure 8The inner wall of the second cable housing 5 is provided with a protrusion 53, which is closer to the first cable housing 4 than the first seal 61. The protrusion 53 protrudes from the inner wall of the second cable housing 5, and the surface of the protrusion 53 away from the first cable housing 4 abuts against the first seal 61. That is, the surface of the protrusion 53 away from the first cable housing 4 is a limiting surface. After the first seal 61 is installed, the end face of the first seal 61 abuts against the limiting surface. Therefore, the protrusion 53 can restrict the first seal 61 from moving in the direction close to the first cable housing 4, preventing the first seal 61 from falling out from the side close to the gun head 2 into the second cable housing 5, thereby causing the seal between the second cable housing 5 and the protective sleeve 8 to fail.

[0147] To prevent the first seal 61 from detaching from the side of the second cable housing 5 away from the first cable housing 4, thus causing a seal failure between the second cable housing 5 and the protective sleeve 8, in some examples, refer to... Figure 8 and Figure 9 The charging gun 10 includes a locking sleeve 7, which is fitted onto the second cable housing 5 and the protective sleeve 8. A portion of the protective sleeve 8 is located inside the second cable housing 5. A first sealing member 61 is fitted onto the protective sleeve 8, with its radially outer peripheral surface abutting against the inner wall surface of the second cable housing 5 and its radially inner surface abutting against the outer peripheral surface of the protective sleeve 8. After the locking sleeve 7 is connected to the second cable housing 5, it presses the side of the first sealing member 61 away from the first cable housing 4 onto the protective sleeve 8 to prevent the first sealing member 61 from coming out of the side of the second cable housing 5 away from the first cable housing 4.

[0148] Among them, reference Figure 8 and Figure 9 The second cable housing 5 includes a first connecting structure 51 and a clamping structure 52, with the clamping structure 52 located further away from the first cable housing 4 than the first connecting structure 51. The clamping structure 52 includes an annular structure 521, located at the end of the second cable housing 5 furthest from the first cable housing 4. The annular structure 521 has multiple openings 522 on its outer circumferential surface. Each opening 522 extends radially through the annular structure 521 and axially to the end face of the annular structure 521 furthest from the first cable housing 4. A first sealing element 61 is disposed between the annular structure 521 and the protective sleeve 8. The locking sleeve 7 is connected to the first connecting structure 51, and the locking sleeve 7 is used to press the annular structure 521 against the first seal 61, so as to press the side of the first seal 61 away from the first cable housing 4 onto the protective sleeve 8 through the annular structure 521, thereby preventing the first seal 61 from coming out from the side of the second cable housing 5 away from the first cable housing 4.

[0149] Each of the plurality of openings 522 extends radially through the annular structure 521, that is, the opening 522 communicates with the inner cavity of the annular structure 521. Each opening 522 extends axially along the annular structure to the end face of the annular structure 521 away from the first cable housing 4. The solid structure on the annular structure 521 located between two adjacent openings 522 is formed into a strip-shaped sheet structure. The plurality of openings 522 divides the solid portion of the annular structure 521 into a plurality of strip-shaped sheet structures. The end of each strip-shaped sheet structure near the first cable housing 4 is disposed on the second cable housing 5, and the end of each strip-shaped sheet structure away from the first cable housing 4 is formed as a suspension end.

[0150] In order for the annular structure 521 to press against the first seal 61, in some examples, pressure can be applied to the strip structure by the locking sleeve 7, for example, pressure can be applied to the outer surface of the suspension end of the strip structure, so that the strip structure can be easily pressed against the first seal 61. That is, the pressure applied to the strip structure by the locking sleeve 7 is transmitted to the first seal 61 through the strip structure, thereby pressing the side of the first seal 61 away from the first cable housing 4 against the protective sleeve 8.

[0151] In some examples, multiple openings 522 are spaced apart along the circumferential direction of the annular structure 521, that is, multiple strip-shaped sheet structures are spaced apart along the circumferential direction of the annular portion 521. For example, multiple openings 522 can be evenly spaced along the circumferential direction of the annular structure 521, so that the annular structure 521 is subjected to uniform force.

[0152] Figure 10 It shows Figure 7 A cross-sectional view of the locking sleeve in the charging gun. (Refer to...) Figure 7 and Figure 10 The locking sleeve 7 includes a second connecting structure 71 and a protrusion 72. The second connecting structure 71 and the protrusion 72 are disposed on the inner wall surface of the locking sleeve 7, with the second connecting structure 71 closer to the first cable housing 4 than the protrusion 72. The protrusion 72 protrudes from the inner wall surface of the locking sleeve 7 and abuts against the outer peripheral surface of the pressing structure 52, i.e., the outer peripheral surface of the strip-shaped structure of the annular structure 521. From the direction away from the second connecting structure 71, the distance between the surface of the protrusion 72 away from the inner wall surface of the locking sleeve 7 and the inner wall surface of the locking sleeve 7 gradually increases.

[0153] Reference Figure 8 , Figure 9 and Figure 10The second connecting structure 71 is connected to the first connecting structure 51 to connect the locking sleeve 7 and the second cable housing 5. Furthermore, since the protrusion 72 abuts against the outer peripheral surface of the strip-shaped structure of the annular structure 521, after the second connecting structure 71 is connected to the first connecting structure 51, the protrusion 72 of the locking sleeve 7 is always abutted against the outer peripheral surface of the pressing structure 52, that is, the protrusion 72 of the locking sleeve 7 is always abutted against the outer peripheral surface of the strip-shaped structure of the annular structure 521, so that the pressing structure 52 is always pressed against the first sealing member 61.

[0154] In this configuration, the distance between the surface of the protrusion 72 away from the second connecting structure 71 and the inner wall surface of the locking sleeve 7 gradually increases in the direction away from the protrusion 72. That is, the surface of the protrusion 72 away from the inner wall surface of the locking sleeve 7 is formed as an inclined surface. This inclined surface extends radially inward along the locking sleeve 7 in the direction away from the second connecting structure 71. Thus, during the connection between the second connecting structure 71 and the first connecting structure 51, the inclined surface of the protrusion 72 can guide the suspended end of the strip-shaped structure of the annular structure 521 to move along the inclined surface, allowing the protrusion 72 to abut against the suspended end of the strip-shaped structure of the annular structure 521, thereby pressing the strip-shaped structure of the annular structure 521 against the first sealing member 61.

[0155] In addition, during the connection process between the second connecting structure 71 and the first connecting structure 51, the pressure of the protrusion 72 on the pressing structure 52 gradually increases, that is, the pressure of the protrusion 72 on the suspension end of the strip-shaped structure of the annular structure gradually increases. After the second connecting structure 71 and the first connecting structure 51 are connected, the pressure of the protrusion 72 on the pressing structure 52 is the greatest, that is, the pressure of the pressing structure 52 on the first sealing member 61 is the greatest, so that the pressing structure 52 firmly presses the side of the first sealing member 61 away from the first cable housing 4 onto the protective sleeve 8.

[0156] In some examples, the protrusion 72 is arranged around the inner wall of the locking sleeve 7, that is, the protrusion 72 is annular. The protrusion 72 is sleeved on the clamping structure 52, and the inner wall of the protrusion 72 abuts against the outer peripheral surface of the clamping structure 52. Since the protrusion 72 is annular, the force of the protrusion 72 can be evenly applied to the clamping structure 52 along the circumferential direction of the clamping structure 52. This ensures that the clamping structure 52 is subjected to uniform force, avoiding damage to the clamping structure 52 itself or the first seal 61 inside the clamping structure 52 due to uneven force. In addition, the inner diameter of the protrusion 72 gradually decreases from the direction away from the second connecting structure 71. That is, the suspended end of the strip-shaped structure of the annular structure 521 moves along the inner surface (the inner surface is an inclined surface) of the protrusion 72 so that the protrusion 72 can abut against the suspended end of the strip-shaped structure of the annular structure 521, thereby pressing the strip-shaped structure of the annular structure 521 against the first sealing member 61.

[0157] In other embodiments, the protrusion 72 may also include other forms of structure. For example, the protrusion 72 may include a bump. After the locking sleeve 7 and the second cable housing 5 are connected, the bump is located on one side of the pressing structure 52, abuts against the outer peripheral surface of the pressing structure 52, and the bump can press the pressing structure 52 against the first seal 61. The embodiments of this application do not impose special limitations on the specific form of the protrusion 72.

[0158] Reference Figure 9 and Figure 10 The first connecting structure 51 includes a first threaded structure 511, and the second connecting structure 71 includes a second threaded structure 711. The first threaded structure 511 and the second threaded structure 711 are threadedly connected to connect the locking sleeve 7 to the housing of the second cable 3.

[0159] In other embodiments, the first connecting structure 51 may include a snap fastener, and the second connecting structure 71 may include a slot, with the snap fastener accommodated within the slot to connect the locking sleeve 7 to the second cable housing 5. This application does not impose any special limitations on the specific structure or connection method of the first connecting structure 51 and the second connecting structure 71.

[0160] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A charging gun, characterized in that, include: The gun head includes multiple connection terminals, each of which includes a plug-in end and a cable connection end, the plug-in end being used to connect to an electric vehicle; A first cable housing is connected to the gun head, and the cable connection end is located in the cavity jointly enclosed by the first cable housing and the gun head; A second cable housing is connected to the first cable housing, and the second cable housing is located further away from the gun head than the first cable housing. A cable that passes through the second cable housing and the first cable housing and is connected to the cable connection end; The gun body is arranged around the outer peripheral surfaces of the first cable housing and the second cable housing.

2. The charging gun according to claim 1, characterized in that, A first seal is provided between the second cable housing and the cable on the side away from the first cable housing.

3. The charging gun according to claim 2, characterized in that, The side of the second cable housing away from the first cable housing includes a first connecting structure and a clamping structure, wherein the clamping structure is farther away from the first cable housing than the first connecting structure; The first seal is disposed between the cable and the clamping structure. The charging gun also includes a locking sleeve, which is fitted onto the second cable housing; The locking sleeve is connected to the first connecting structure, and the locking sleeve is used to press the clamping structure against the first sealing element.

4. The charging gun according to claim 3, characterized in that, The clamping structure includes an annular structure, which is disposed at the end of the second cable housing furthest from the first cable housing. The annular structure has multiple openings, which are spaced apart along the circumferential direction of the annular structure. Each opening penetrates the annular structure radially and extends along the axial direction of the annular structure to the end face of the annular structure furthest from the first cable housing.

5. The charging gun according to claim 3 or 4, characterized in that, The locking sleeve includes a second connecting structure and a protrusion, the second connecting structure and the protrusion are disposed on the inner wall surface of the locking sleeve, and the second connecting structure is closer to the first cable housing than the protrusion; The second connection structure is connected to the first connection structure; The protrusion protrudes from the inner wall surface of the lock sleeve, and the protrusion abuts against the outer peripheral surface of the clamping structure; From the direction away from the second connecting structure, the distance between the surface of the protrusion away from the inner wall of the lock sleeve and the inner wall of the lock sleeve gradually increases.

6. The charging gun according to claim 5, characterized in that, The protrusion is arranged around the inner wall of the lock sleeve.

7. The charging gun according to any one of claims 3-6, characterized in that, The first connection structure includes a first threaded structure.

8. The charging gun according to any one of claims 2-7, characterized in that, The inner wall surface of the second cable housing is provided with a protrusion, which is closer to the first cable housing than the first sealing member; The protrusion is provided on the inner wall surface of the second cable housing, and the surface of the protrusion away from the first cable housing abuts against the first seal.

9. The charging gun according to any one of claims 2-8, characterized in that, The charging gun also includes a protective sleeve, which is fitted over the cable; The first sealing element is fitted onto the protective sleeve.

10. The charging gun according to any one of claims 1-9, characterized in that, A second seal is provided between the first cable housing and the second cable housing.

11. The charging gun according to any one of claims 1-10, characterized in that, The end of the first cable housing away from the gun head includes a first hole for the cable to pass through; The second cable housing is fitted around the outer periphery of the first cable housing, and the first hole extends into the second cable housing.

12. The charging gun according to claim 11, characterized in that, A third seal is provided between the first hole and the cable.

13. The charging gun according to any one of claims 1-12, characterized in that, A first connecting plate is provided on the outer periphery of the end of the first cable housing away from the gun head, and a second connecting plate is provided on the outer periphery of the end of the second cable housing close to the gun head; The end face of the first connecting plate abuts against the end face of the second connecting plate, and the first connecting plate and the second connecting plate are fixedly connected.

14. The charging gun according to any one of claims 1-13, characterized in that, A fourth seal is provided between the first cable housing and the gun head.

15. A charging device, characterized in that, The device includes a power module and a charging gun according to any one of claims 1-14, wherein the charging gun and the power module are electrically connected via the cable.

Images