Charging gun head structure and alternating current charging gun

Abstract

The utility model relates to the technical field of charging guns, in particular to a charging gun head structure and an alternating current charging gun. The charging gun head structure comprises a gun head shell, a terminal pin and a terminal pressing plate, a terminal jack for inserting the terminal pin is arranged in the gun head shell, the terminal pressing plate is sleeved outside the terminal pin and is connected with the gun head shell, and the rear end of the terminal pin is connected with a charging gun wire. The rear end of the gun head shell is connected with the charging gun shell, and the terminal pressing plate is located between the gun head shell and the charging gun shell. A groove is annularly formed in the outer side of the rear end of the gun head shell, a sealing ring is arranged in the groove in a sleeved mode, and interference fit is formed between the sealing ring and the gun head shell and between the sealing ring and the charging gun shell. A hanging table groove is formed in the rear end face of the gun head shell, a first extending plate is arranged on the terminal pressing plate, a first boss protruding outwards is arranged on the first extending plate, and when the terminal pressing plate is connected with the gun head shell, the first boss is clamped in the hanging table groove. The charging gun head can effectively solve the technical problems that an existing charging gun head is long in assembling time and high in cost, and a PIN is prone to retreating in the charging plugging and unplugging process.

Description

Technical Field

[0001] The utility model relates to the technical field of charging guns, in particular to a charging gun head structure and an AC charging gun. Background Art

[0002] With the rapid development of the electric vehicle industry, supporting charging technologies such as charging piles and charging guns are also developing rapidly. The charging gun is the charging interface for new energy electric vehicles and is a key supporting charging equipment for the development of the new energy electric vehicle industry. The structure of an AC charging gun generally consists of a charging gun head, a charging gun body, and a charging gun tail. The charging gun head is installed at the front end of the charging gun body. The charging gun cable passes from the charging gun tail into the charging gun body and connects to the terminal pins in the charging gun head to realize the charging function.

[0003] In conventional charging guns, the terminal pressure plate inside the gun head shell is used to fix the terminal pins, but the terminal pressure plate is mostly placed directly inside the gun head shell and limited by abutting against the charging gun main body shell, which can easily cause the terminal pins to loosen after multiple plugging and unplugging of the charging gun, resulting in PIN withdrawal problems; or it is fixed to the gun head shell by screws. This assembly method not only takes a long time and has low assembly efficiency, but also increases material costs. Utility Model Content

[0004] In response to the shortcomings in the existing technology, the purpose of the present invention is to provide a charging gun head structure and an AC charging gun. The provided charging gun head structure can effectively solve the technical problems of the existing charging gun head, such as long assembly time, high cost, and easy PIN removal during charging and plugging.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A technical solution of the present invention provides a charging gun head structure, including a gun head shell, a terminal pin and a terminal pressure plate. The gun head shell is provided with a terminal jack, the terminal pin is inserted into the terminal jack, the terminal pressure plate is sleeved on the outside of the terminal pin and connected to the gun head shell, and the rear end of the terminal pin is electrically connected to the charging gun line;

[0007] The rear end of the gun head shell is connected to the charging gun shell, and the terminal pressing plate is located between the gun head shell and the charging gun shell;

[0008] A groove is provided on the outer surface of the rear end of the gun head shell, and a sealing ring is provided in the groove. An interference fit is formed between the sealing ring, the gun head shell and the charging gun shell;

[0009] At least two hanging grooves are provided on the rear end surface of the gun head shell, and a first extension plate is provided on the terminal pressure plate. The first extension plate is provided with a first outwardly protruding boss that matches the shape of the hanging groove. When the terminal pressure plate is connected to the gun head shell, the first boss is clamped in the hanging groove one by one.

[0010] By adopting the above technical solution, a quick connection between the terminal pressure plate and the gun head shell can be achieved by setting a first boss and a snap connection with the hanging groove, thereby improving the plug-in tightness of the terminal pin in the terminal socket of the gun head shell; setting a sealing ring can improve the connection sealing between the gun head shell and the charging gun shell, and improve the waterproof effect of the charging gun.

[0011] Furthermore, the gun head housing is provided with a connecting plate having at least two connecting grooves, and the terminal pressing plate is provided with a second extension plate having a second outwardly protruding boss that matches the shape of the connecting grooves. When the terminal pressing plate is connected to the gun head housing, the connecting plate abuts the second extension plate, and the second bosses are locked into the connecting grooves in a one-to-one correspondence. By providing the second bosses to be locked into the connecting grooves, the stability of the fixed connection between the terminal pressing plate and the gun head housing can be further improved, thereby ensuring that the terminal pins are inserted into the terminal receptacles of the gun head housing without loosening.

[0012] Furthermore, pressure plate limit blocks are respectively provided on the two side surfaces of the second extension plate. When the terminal pressure plate is connected to the gun head shell, the pressure plate limit blocks are clamped on both sides of the edge of the connecting plate to play a limiting role and prevent the terminal pressure plate from shaking in the gun head shell.

[0013] Furthermore, a strip-shaped plug is provided on the inner wall of the gun head shell, and a strip-shaped slot matching the shape of the strip-shaped plug is provided on the terminal pressure plate. When the terminal pressure plate is connected to the gun head shell, the strip-shaped plug is inserted into the strip slot to play a limiting role, preventing the terminal pressure plate from rotating and shaking inside the gun head shell.

[0014] The present utility model also provides an AC charging gun, comprising a charging gun head, a charging gun housing, a charging gun upper cover, a charging gun wire and a charging gun tail, as well as a control switch arranged inside the charging gun housing and electrically connected to the charging gun wire. The charging gun head adopts the charging gun head structure described in any of the above technical solutions.

[0015] Furthermore, the charging gun housing and the charging gun upper cover are fixedly connected by a snap fastener. The upper surface of the charging gun housing is provided with a mounting platform, on which a switch limiter, a rotating shaft support, and a spring slot are provided. A square slot is provided in the switch limiter, and at least two U-shaped slots communicating with the square slot are symmetrically provided on the side wall of the switch limiter. The control switch is inserted into the square slot and the U-shaped slot, and a spring is vertically installed in the spring slot.

[0016] A hook member is provided between the charging gun housing and the upper cover of the charging gun. The hook member includes a hook portion, a hinge portion, and a pressing portion from front to back. The hook portion abuts against the top of the control switch, and the front end of the hook portion extends out of the charging gun housing. The hinge portion is hinged to the shaft support, and the pressing portion abuts against the top of the spring.

[0017] The upper cover of the charging gun is provided with a button mounting hole, a switch button is passed through the button mounting hole, and the switch button is fixedly connected to the pressing portion.

[0018] For the AC charging gun adopting the above technical solution, when charging, the operator presses the switch button downward to control the pressing part at the rear end of the hook part to compress the spring downward. At the same time, under the pivotal connection of the hinge part, the hook part is lifted upward, the hook part is separated from the control switch and feedback signal is fed back to turn on the power-off mode; after the hook part is engaged and matched with the external charging seat socket, the switch button is released, the charging gun head is connected to the charging seat socket, and the pressing part is lifted upward under the elastic force of the spring. At the same time, the hook part moves downward to abut the control switch and feedback signal, the detection unit forms a parallel circuit, and charging starts; after charging is completed, press the switch button downward to lift the hook part and pull the charging gun head out of the charging seat socket.

[0019] Furthermore, the mounting platform is provided with a plurality of upwardly protruding hidden buckles, and the lower side of the charging gun cover is provided with a plurality of hanging grooves, and the hanging grooves correspond to the hidden buckles one by one and are snap-connected;

[0020] The mounting platform is provided with two rows of positioning slots, and the upper cover of the charging gun is provided with two rows of positioning strips, and the positioning strips are inserted into the positioning slots in a one-to-one correspondence.

[0021] By setting a hanging groove and a hidden buckle, the charging gun cover and the charging gun shell can be quickly connected, and the connection is stable and does not need to be fixed with screws, which saves installation time and cost, and can also avoid the situation where the screws are rusted. By setting a positioning strip and a positioning slot, the connection position can be limited when the charging gun cover and the charging gun shell are connected, thereby improving the connection stability and preventing the charging gun cover from loosening.

[0022] Furthermore, the charging gun tail includes a gun tail shell, which is a cylindrical structure with two ends open and a hollow interior. A clamp, a cable sheath and a waterproof ring are connected to the inner side of the gun tail shell, and a charging gun wire is passed through the gun tail shell;

[0023] The cable sheath ring is arranged on the outside of the charging gun wire and is fixedly connected to it. The clamp is sleeved on the outside of the cable sheath. The gun tail shell is sleeved on the outside of the clamp. The upper end of the gun tail shell is connected to the charging gun shell. The lower end of the gun tail shell is snap-connected to the clamp. The waterproof ring is arranged between the gun tail shell and the charging gun wire and forms an interference fit with both the gun tail shell and the charging gun wire.

[0024] At least two outwardly protruding blocks are arranged on the outer side of the clamp, and a slot matching the shape of the blocks is arranged on the inner side of the gun tail shell. The blocks correspond to the slots one by one and are snap-connected.

[0025] The AC charging gun adopts the above technical solution, which realizes the quick snap-on connection between the gun tail shell and the clamp by setting mutually cooperating clamps and slots, avoiding the use of screws for multiple fixations, saving time and effort; the gun tail shell can be quickly installed and fixedly connected to the charging gun wire through the clamp and cable sheath, and the connection sealing between the gun tail shell and the charging gun wire is improved by setting a waterproof ring, thereby improving the waterproof effect.

[0026] Furthermore, the clamp comprises a first clamp and a second clamp, both of which are semicircular and buckled together to be sleeved over the exterior of the cable sheath and fixedly connected thereto. Each of the first and second clamps has at least one clamping block on its outer curved surface. The clamp utilizes a detachable, half-and-half structure for easy removal and installation. The gun breech housing is provided with at least two clamping slots that engage with the clamping blocks on the first and second clamps, respectively, thereby securing the gun breech housing to the clamp.

[0027] Furthermore, the two end surfaces of the first clamp are provided with plug-in holes, and the two end surfaces of the second clamp are provided with plug-in columns. When the first clamp and the second clamp are spliced ​​and connected, the plug-in columns are inserted into the plug-in holes.

[0028] At least two limiting pins are provided on the inner curved surfaces of the first and second clamps, and limiting holes are provided on the cable sheath, into which the limiting pins are inserted. By inserting and matching the plug-in column with the plug-in hole, the first and second clamps can be quickly connected to avoid misalignment of the connection position; the first and second clamps are sleeved on the cable sheath from both sides and spliced ​​together, and the limiting pins are inserted and matched with the limiting holes to fix the first and second clamps to the cable sheath respectively, thereby defining the installation position on the cable sheath and preventing the clamps from being offset when the gun tail shell is axially inserted and removed for snap connection.

[0029] The utility model has the following beneficial effects:

[0030] The charging gun head structure provided by the present invention can realize a quick connection between the terminal pressure plate and the gun head shell, improve the stability of the terminal pin inserted in the terminal jack of the gun head shell, avoid loosening, and improve the sealing and waterproof properties of the connection between the gun head shell and the charging gun shell. The AC charging gun provided by the present invention can quickly install the control switch in the charging gun shell, which is not easy to be misplaced, and can realize a quick fixed connection between the charging gun cover and the charging gun shell through multiple snap connections. It is not easy to loosen, the assembly is simple, the time is short, and the installation cost and material cost can be saved. In addition, a quick fixed connection can be achieved by cooperating between the clamp and the gun tail shell and the cable sheath, which improves the connection stability and waterproof sealing between the gun tail shell and the charging gun line, and extends the service life and use safety of the charging gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of the three-dimensional structure of the charging gun head structure of the utility model;

[0033] Figure 2 This is a schematic diagram of the three-dimensional structure of the gun head shell in the utility model;

[0034] Figure 3 This is a schematic diagram of the three-dimensional structure of the terminal pressing plate in the utility model;

[0035] Figure 4 This is a schematic diagram of the structure of the connection between the terminal pin and the terminal pressure plate in the utility model;

[0036] Figure 5 This is a schematic diagram of the three-dimensional structure of the AC charging gun in the utility model;

[0037] Figure 6 This is a cross-sectional view of the internal structure of the AC charging gun in the present utility model;

[0038] Figure 7 This is a schematic diagram of the explosion structure of the AC charging gun in the utility model;

[0039] Figure 8 This is a schematic diagram of the installation position of the control switch in the AC charging gun of the utility model;

[0040] Figure 9 This is a structural diagram of the control switch and switch limiter in the AC charging gun of the utility model;

[0041] Figure 10This is a schematic diagram of the connection position of the control switch and the hook member on the installation platform of the utility model;

[0042] Figure 11 This is a schematic diagram of the three-dimensional structure of the upper cover of the charging gun in the utility model;

[0043] Figure 12 This is a schematic diagram of the internal structure of the charging gun tail after a partial section of the utility model;

[0044] Figure 13 It is a three-dimensional structural diagram of the clamp in the utility model.

[0045] Description of the numbers in the figure:

[0046] 101, gun head shell; 111, terminal jack; 121, groove; 131, hanging platform groove; 141, connecting plate; 151, connecting groove; 161, strip plug; 102, terminal pin; 103, terminal pressure plate; 113, first extension plate; 123, first boss; 133, second extension plate; 143, second boss; 153, pressure plate limit block; 163, strip slot; 104, sealing ring;

[0047] 100, charging gun head; 200, charging gun housing; 201, mounting platform; 202, switch limiter; 2021, square slot; 2022, U-shaped slot; 203, shaft support; 204, spring slot; 205, spring; 206, concealed buckle; 207, positioning slot; 208, limiting column; 300, charging gun cover; 301, button mounting hole; 302, switch button; 312, anti-slip part; 303, hanging slot; 304, positioning strip; 4 00, charging gun line; 500, charging gun tail; 501, gun tail housing; 511, slot; 502, clamp; 512, clamp block; 522, first clamp; 5221, plug hole; 532, second clamp; 5321, plug column; 542, limit pin; 503, cable sheath; 513, limit hole; 504, waterproof ring; 600, control switch; 700, hook; 701, hook part; 702, hinge part; 703, pressing part. DETAILED DESCRIPTION

[0048] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of the present invention are limited to the embodiment.

[0049] In the description of this embodiment, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "front", "back", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or are the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to has a specific orientation, is constructed and operates in a specific orientation. Therefore, they should not be understood as limiting the utility model. The terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0050] In the description of this embodiment, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on their specific circumstances.

[0051] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0052] refer to Figures 1 to 5 In one embodiment of the present invention, a charging gun head structure is provided, including a gun head shell 101, a terminal pin 102 and a terminal pressure plate 103. The gun head shell 101 is provided with a terminal jack 111, the terminal pin 102 is inserted into the terminal jack 111, the terminal pressure plate 103 is sleeved on the outside of the terminal pin 102 and connected to the gun head shell 101, and the rear end of the terminal pin 102 is electrically connected to the charging gun line 400. The rear end of the gun head shell 101 is connected to the charging gun housing 200, and the terminal pressure plate 103 is located between the gun head shell 101 and the charging gun housing 200. Reference Figure 1 、 Figure 2 and Figure 6 A groove 121 is provided on the outer surface of the rear end of the gun head shell 101, and a sealing ring 104 is provided inside the groove 121. An interference fit is formed between the sealing ring 104 and the gun head shell 101 and the charging gun shell 200, thereby improving the connection sealing between the gun head shell 101 and the charging gun shell 200 and improving the waterproof effect of the charging gun.

[0053] refer to Figures 1 to 3At least two hanging grooves 131 are provided on the rear end face of the gun head shell 101, and a first extension plate 113 is provided on the terminal pressing plate 103. The first extension plate 113 is provided with a first outward-protruding boss 123 that matches the shape of the hanging groove 131. When the terminal pressing plate 103 is connected to the gun head shell 101, the first boss 123 is clamped in the hanging groove 131 one by one, which can realize a quick connection between the terminal pressing plate 103 and the gun head shell 101, thereby improving the plug-in tightness of the terminal pin 102 in the terminal socket 111 of the gun head shell 101.

[0054] refer to Figures 1 to 3 In another embodiment of the present invention, a connecting plate 141 is provided in the gun head shell 101, and at least two connecting grooves 151 are provided on the connecting plate 141. A second extension plate 133 is provided on the terminal pressing plate 103, and a second protruding boss 143 that matches the shape of the connecting groove 151 is provided on the second extension plate 133. When the terminal pressing plate 103 is connected to the gun head shell 101, the connecting plate 141 abuts against the second extension plate 133, and at the same time, the second boss 143 is clamped in the connecting groove 151 one by one, thereby further improving the stability of the fixed connection between the terminal pressing plate 103 and the gun head shell 101, thereby ensuring that the terminal pin 102 is inserted into the terminal socket 111 without loosening.

[0055] refer to Figure 1 and Figure 3 , the two sides of the second extension plate 133 are respectively provided with a pressure plate limit block 153. When the terminal pressure plate 103 is connected to the gun head shell 101, the pressure plate limit block 153 is clamped on both sides of the edge of the connecting plate 141 to play a limiting role and prevent the terminal pressure plate 103 from shaking in the gun head shell 101. Figure 2 and Figure 3 A strip-shaped plug-in block 161 is provided on the inner wall of the gun head shell 101, and a strip-shaped slot 163 matching the shape of the strip-shaped plug-in block 161 is provided on the terminal pressing plate 103. When the terminal pressing plate 103 is connected to the gun head shell 101, the strip-shaped plug-in block 161 is inserted into the strip slot 163, which plays a limiting role and prevents the terminal pressing plate 103 from rotating and shaking inside the gun head shell 101.

[0056] refer to Figures 5 to 7 In another embodiment of the present invention, an AC charging gun is provided, including a charging gun head 100, a charging gun housing 200, a charging gun upper cover 300, a charging gun wire 400 and a charging gun tail 500, as well as a control switch 600 provided inside the charging gun housing 200 and electrically connected to the charging gun wire 400. The charging gun head 100 adopts the charging gun head structure of any of the above embodiments.

[0057] Specifically, refer to Figure 6 and Figure 8The charging gun housing 200 and the charging gun cover 300 are fixedly connected by a buckle. The upper surface of the charging gun housing 200 is provided with a mounting platform 201. The mounting platform 201 is provided with a switch limiter 202, a shaft support 203 and a spring slot 204. A spring 205 is vertically installed in the spring slot 204. Figure 8 and Figure 9 A square groove 2021 is provided in the switch limiter 202 , and at least two U-shaped grooves 2022 communicating with the square groove 2021 are symmetrically provided on the side wall of the switch limiter 202 . The control switch 600 is inserted into the square groove 2021 and the U-shaped groove 2022 .

[0058] refer to Figure 6 and Figure 10 A hook member 700 is provided between the charging gun housing 200 and the charging gun upper cover 300. The hook member 700 includes a hook portion 701, a hinge portion 702, and a pressing portion 703 from front to back. The hook portion 701 abuts against the top of the control switch 600. The front end of the hook portion 701 extends out of the charging gun housing 200. The hinge portion 702 and the shaft support 203 are hingedly connected by a rotating shaft. The shaft support 203 is fixed on the mounting platform 201. The hook member 700 rotates in the shaft support 203. The pressing portion 703 abuts against the top of the spring 205. Figure 6 and Figure 11 The charging gun upper cover 300 is provided with a button mounting hole 301 , in which a switch button 302 is passed. The switch button 302 is fixedly connected to the pressing portion 703 .

[0059] When the charging gun provided in this embodiment is charging, the operator presses the switch button 302 downward to control the pressing portion 703 at the rear end of the hook member 700 to compress the spring 205 downward. At the same time, under the pivotal connection of the hinged portion 702, the hook portion 701 is lifted upward, and the hook portion 701 is separated from the control switch 600 and feedback signal is fed back to turn on the power-off mode; after the hook portion 701 is engaged and matched with the external charging seat socket, the switch button 302 is released, and the charging gun head 100 is connected to the charging seat socket. Under the elastic force of the spring 205, the pressing portion 703 is lifted upward, and at the same time, the hook portion 701 moves downward to abut the control switch 600 and feedback signal is fed back, the detection unit forms a parallel circuit, and charging starts; after charging is completed, press the switch button 302 downward to lift the hook portion 701 and unplug the charging gun head 100 from the charging seat socket.

[0060] refer to Figure 6 、 Figure 10 and Figure 11The mounting platform 201 is equipped with several upwardly protruding hidden buckles 206, and the lower side of the charging gun cover 300 is equipped with several hanging grooves 303. The hanging grooves 303 correspond to the hidden buckles 206 and snap together, thus achieving a quick and stable connection between the charging gun cover 300 and the charging gun housing 200. The connection is strong and does not require screws, saving installation time and cost. The mounting platform 201 is equipped with two rows of positioning slots 207, and the charging gun cover 300 is equipped with two rows of positioning strips 304. The positioning strips 304 are inserted into the positioning slots 207 one by one. They can define the connection position when the charging gun cover 300 is connected to the charging gun housing 200, improve the connection stability, and prevent the charging gun cover from loosening.

[0061] Referring to the figure, in another embodiment of the present invention, a limiting post 208 is vertically disposed within the spring slot 204, and the spring 205 is sleeved around the limiting post 208 and accommodated within the spring slot 204. The limiting post 208 ensures that the spring 205 can deform vertically and also acts as a limiter, preventing excessive compression of the spring 205 when the pressing portion 703 is pressed downward. Referring to the figure, the top of the switch button 302 extends out of the button mounting hole 301, and an anti-slip portion 312 is provided on the upper surface of the switch button 302 to improve its surface roughness, making it easier for operators to press without slipping.

[0062] refer to Figure 7 and Figure 12 In another embodiment of the present invention, a charging gun butt 500 includes a butt housing 501, which is a hollow cylindrical structure with open ends. A clamp 502, a cable sheath 503, and a waterproof ring 504 are connected to the inside of the butt housing 501. The charging gun cable 400 is threaded into the butt housing 501. The cable sheath 503 is looped around the outside of the charging gun cable 400 and fixedly connected to it. The clamp 502 is clamped around the outside of the cable sheath 503, and the butt housing 501 is sleeved over the outside of the clamp 502. The upper end of the gun tail housing 501 connects to the charging gun housing 200, while the lower end of the gun tail housing 501 snaps into place with the clamp 502. A waterproof ring 504 is positioned between the gun tail housing 501 and the charging gun cable 400, creating an interference fit with both. This improves the seal between the gun tail housing 501 and the charging gun cable 400 and enhances waterproofing. The clamp 502 has at least two outwardly protruding blocks 512 on its outer surface, and slots 511 matching the blocks 512 on its inner surface. The blocks 512 correspond to the slots 511 and snap into place, enabling a quick snap-on connection between the gun tail housing 501 and the clamp 502. This avoids the need for multiple screw connections, saving installation time and reducing costs.

[0063] refer to Figure 12 and Figure 13 The clamp 502 includes a first clamp 522 and a second clamp 532. Both the first clamp 522 and the second clamp 532 are semi-circular in shape. They are fastened together and sleeved on the exterior of the cable sheath 503, securely connecting the two. Each of the first clamp 522 and the second clamp 532 has at least one clamping block 512 formed on its outer curved surface. The clamp 502 utilizes a detachable, half-and-half structure for easy removal and installation. Two slots 511 are provided on the breech housing 501, which engage with the clamping blocks 512 on the first clamp 522 and the second clamp 532, respectively, thereby securing the breech housing 501 to the clamp 502.

[0064] refer to Figure 13 The first clamp 522 is provided with a plug-in hole 5221 on both end surfaces, and the second clamp 532 is provided with a plug-in column 5321 on both end surfaces. When the first clamp 522 and the second clamp 532 are spliced ​​and connected, the plug-in column 5321 is inserted into the plug-in hole 5221, which can quickly complete the connection between the first clamp 522 and the second clamp 532 and avoid misalignment of the connection position. Figure 7 and Figure 13 At least two limiting pins 542 are provided on the inner curved surfaces of the first clamp 522 and the second clamp 532. A limiting hole 513 is defined in the cable sheath 503, and the limiting pins 542 are inserted into the limiting hole 513. The first clamp 522 and the second clamp 532 are sheathed on the cable sheath 503 from both sides and connected together. The limiting pins 542 engage with the limiting holes 513 to securely connect the first clamp 522 and the second clamp 532 to the cable sheath 503, defining their respective installation positions on the cable sheath 503 and preventing the clamp 502 from shifting during axial insertion and removal of the gun breech housing 501 for snap-on connection.

[0065] Although the preferred embodiments of the present invention have been disclosed above, they are not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solutions of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A charging gun head structure, characterized in that: The gun head shell (101) comprises a terminal plug (102) and a terminal pressure plate (103), wherein a terminal jack (111) is provided in the gun head shell (101), the terminal plug (102) is inserted into the terminal jack (111), the terminal pressure plate (103) is sleeved on the outside of the terminal plug (102) and connected to the gun head shell (101), and the rear end of the terminal plug (102) is electrically connected to the charging gun line (400); The rear end of the gun head shell (101) is connected to the charging gun housing (200), and the terminal pressing plate (103) is located between the gun head shell (101) and the charging gun housing (200); A groove (121) is provided on the outer surface of the rear end of the gun head shell (101), and a sealing ring (104) is provided inside the groove (121). An interference fit is formed between the sealing ring (104), the gun head shell (101) and the charging gun housing (200); At least two hanging grooves (131) are provided on the rear end surface of the gun head shell (101), a first extension plate (113) is provided on the terminal pressing plate (103), and a first protruding boss (123) that matches the shape of the hanging groove (131) is provided on the first extension plate (113). When the terminal pressing plate (103) is connected to the gun head shell (101), the first boss (123) is clamped in the hanging groove (131) in a one-to-one correspondence.

2. The charging gun head structure according to claim 1, characterized in that: A connecting plate (141) is provided in the gun head shell (101), and at least two connecting grooves (151) are provided on the connecting plate (141). A second extension plate (133) is provided on the terminal pressing plate (103), and a second protruding platform (143) that matches the shape of the connecting groove (151) is provided on the second extension plate (133). When the terminal pressing plate (103) is connected to the gun head shell (101), the connecting plate (141) abuts against the second extension plate (133), and the second protruding platform (143) is clamped in the connecting groove (151) in a one-to-one correspondence.

3. The charging gun head structure according to claim 2, characterized in that: A pressure plate limiting block (153) is provided on each of the two side surfaces of the second extension plate (133). When the terminal pressure plate (103) is connected to the gun head shell (101), the pressure plate limiting block (153) is clamped on both sides of the edge of the connecting plate (141).

4. The charging gun head structure according to claim 1, characterized in that: A strip-shaped plug-in block (161) is provided on the inner wall of the gun head shell (101), and a strip-shaped slot (163) matching the shape of the strip-shaped plug-in block (161) is provided on the terminal pressing plate (103). When the terminal pressing plate (103) is connected to the gun head shell (101), the strip-shaped plug-in block (161) is inserted into the strip-shaped slot (163).

5. An AC charging gun, characterized in that: The invention comprises a charging gun head (100), a charging gun housing (200), a charging gun upper cover (300), a charging gun wire (400), a charging gun tail (500), and a control switch (600) arranged inside the charging gun housing (200) and electrically connected to the charging gun wire (400). The charging gun head (100) adopts the charging gun head structure as described in any one of claims 1 to 4.

6. The AC charging gun according to claim 5, characterized in that: The charging gun housing (200) and the charging gun upper cover (300) are fixedly connected by a buckle; a mounting platform (201) is provided on the upper surface of the charging gun housing (200); a switch limiter (202), a rotating shaft support (203) and a spring groove (204) are provided on the mounting platform (201); a square groove (2021) is provided in the switch limiter (202); at least two U-shaped grooves (2022) communicating with the square groove (2021) are symmetrically provided on the side wall of the switch limiter (202); the control switch (600) is inserted into the square groove (2021) and the U-shaped groove (2022); and a spring (205) is vertically installed in the spring groove (204); A hook member (700) is provided between the charging gun housing (200) and the charging gun upper cover (300), and the hook member (700) comprises a hook portion (701), a hinge portion (702), and a pressing portion (703) in sequence from front to back, the hook portion (701) abuts against the top of the control switch (600), the front end of the hook portion (701) extends out of the charging gun housing (200), the hinge portion (702) is hinged to the rotating shaft support (203), and the pressing portion (703) abuts against the top of the spring (205); The charging gun upper cover (300) is provided with a button mounting hole (301), a switch button (302) is inserted into the button mounting hole (301), and the switch button (302) is fixedly connected to the pressing portion (703).

7. The AC charging gun according to claim 6, characterized in that: The mounting platform (201) is provided with a plurality of upwardly protruding hidden buckles (206), and the lower side surface of the charging gun upper cover (300) is provided with a plurality of hanging grooves (303), and the hanging grooves (303) correspond to the hidden buckles (206) one by one and are snap-connected; Two rows of positioning slots (207) are provided on the installation platform (201), and two rows of positioning inserts (304) are provided on the charging gun upper cover (300), and the positioning inserts (304) are inserted into the positioning slots (207) in a one-to-one correspondence.

8. The AC charging gun according to claim 5, characterized in that: The charging gun tail (500) includes a gun tail shell (501), which is a cylindrical structure with two ends open and a hollow interior. A clamp (502), a cable sheath (503) and a waterproof ring (504) are connected to the inner side of the gun tail shell (501), and a charging gun wire (400) is passed through the gun tail shell (501); The cable sheath (503) is arranged around the outside of the charging gun line (400) and is fixedly connected thereto, the clamp (502) is sleeved around the outside of the cable sheath (503), the gun tail shell (501) is sleeved around the outside of the clamp (502), the upper end of the gun tail shell (501) is connected to the charging gun shell (200), and the lower end of the gun tail shell (501) is snap-connected to the clamp (502), and the waterproof ring (504) is arranged between the gun tail shell (501) and the charging gun line (400) and forms an interference fit with both the gun tail shell (501) and the charging gun line (400); At least two outwardly protruding blocks (512) are provided on the outer side of the clamp (502), and a slot (511) matching the shape of the block (512) is provided on the inner side of the gun tail housing (501). The block (512) and the slot (511) correspond to each other one by one and are connected by snapping.

9. The AC charging gun according to claim 8, characterized in that: The clamping member (502) comprises a first clamping member (522) and a second clamping member (532), both of which are semicircular in shape. The first clamping member (522) and the second clamping member (532) are buckled together, sleeved on the outside of the cable sheath (503), and fixedly connected to the cable sheath (503); at least one clamping block (512) is provided on the outer arc surface of each of the first clamping member (522) and the second clamping member (532).

10. The AC charging gun according to claim 9, characterized in that: The two end surfaces of the first clamp (522) are provided with plug-in holes (5221), and the two end surfaces of the second clamp (532) are provided with plug-in columns (5321). When the first clamp (522) and the second clamp (532) are spliced ​​and connected, the plug-in columns (5321) are inserted into the plug-in holes (5221); At least two limiting pins (542) are provided on the inner arc surfaces of the first clamp (522) and the second clamp (532), and a limiting hole (513) is provided on the cable sheath (503), and the limiting pins (542) are inserted into the limiting hole (513).

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