Integrated charging gun tail outlet fixed sealing structure

Abstract

The present invention discloses an integrated charging gun tail outlet fixing and sealing device, comprising: a front insulating plate, a core piece, a rear insulating plate, a shell, a locking wire crimping tube and a tail cover; the cable passes through the tail cover, the locking wire crimping tube and the shell and is crimped into the core piece; the core piece is inserted into the cavity of the rear insulating plate, and the rear insulating plate is fastened in the cavity of the front insulating plate; the locking wire crimping tube is inserted into the rear end cavity of the shell, and the tail cover is sealed at the rear end of the shell; the front end of the shell is sleeved on the rear end of the front insulating plate. The tail cover of the present invention can protect the cable and the shell at the same time, and the protection level can reach IP67. The tail cover and the shell can jointly realize the forward and backward movement and twisting of the locking wire crimping tube.

Description

Technical Field

[0001] The present invention belongs to the technical field of charging gun equipment, and in particular relates to an integrated charging gun tail outlet fixing and sealing device. Background Art

[0002] With the development of new energy electric vehicles, the protection requirements for charging guns are getting higher and higher. The basic components of a charging station are charging guns and charging piles. The charging piles transmit high-voltage power to the charging guns through cables for charging electric vehicles. Currently, the tail sealing structure of charging guns on the market is mostly a gland-like sealing method. During the charging process, the charging gun cable moves with the charging gun, and the tail of the charging gun needs to form a seal with the shell of the charging gun.

[0003] In order to ensure the reliability of the seal, it is necessary to ensure that the cable does not generate additional force on the seal during movement, to prevent the cable and seal from loosening during long-term use, which may lead to seal failure and safety hazards. In addition, the cable is inevitably pulled and twisted when using or fixing the charging gun, which will accelerate the aging and deformation of the sealing structure at the connection, resulting in gaps and causing water or electric leakage. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide an integrated charging gun tail outlet fixing and sealing device to solve the technical problem of tail sealing in the prior art.

[0005] In order to solve the above technical problems, the present invention provides an integrated charging gun tail outlet fixing and sealing device, which is characterized by comprising:

[0006] Front insulation board, core piece, rear insulation board, shell, wire locking crimping tube and tail cover;

[0007] The cable passes through the tail cover, the locking wire crimping tube, the housing and is crimped into the core piece;

[0008] The core piece is inserted into the cavity of the rear insulating plate, and the rear insulating plate is fastened in the cavity of the front insulating plate;

[0009] The locking wire crimping tube is inserted into the rear end cavity of the housing, and the tail cover is sealed at the rear end of the housing;

[0010] The front end of the shell is sleeved on the rear end of the front insulating plate.

[0011] Furthermore, the rear end of the front insulating plate is provided with an embedded tube protruding forward, and the middle of the front insulating plate is provided with a core installation cavity in the embedded tube ring, and the core installation cavity is used to install the core;

[0012] A plurality of buckles are arranged on the rear end outer wall of the embedded tube on the front insulating plate, a plurality of front insulating plate buckle grooves are arranged on the front end outer wall of the embedded tube, an insert nut is arranged on the rear end outer wall of the embedded tube, and the insert nut is injection molded in the front insulating plate.

[0013] Furthermore, a cable crimping barrel is arranged at the front end of the core piece; a positioning surface and an anti-rotation flat position are arranged at the rear end of the cable crimping barrel.

[0014] Furthermore, a core crimping tube placement inner cavity is provided in the middle of the front end of the rear insulating plate, and a core positioning surface and a core anti-rotation flattening position are provided inside the core crimping tube placement inner cavity, the positioning surface cooperates with the core positioning surface, and the anti-rotation flattening position cooperates with the core anti-rotation flattening position; rear insulating plate buckles are provided around the rear end edge of the rear insulating plate; the insulating plate buckles on the rear insulating plate match the front insulating plate buckle grooves on the front insulating plate.

[0015] Furthermore, a shell cavity for the cable to pass through is provided at the center of the shell along the axis, a shell buckle groove is provided on the front end inner cavity wall of the shell, the shell buckle groove matches the buckle on the front insulating plate, and the front insulating plate and the shell are fixed by the buckle and the shell buckle groove; a positioning rib is also provided on the front end inner cavity wall of the shell behind the shell buckle groove, which is used to fix the rear end of the rear insulating plate; an axial screw hole is provided on the front end outer wall of the shell, and when the shell and the front insulating plate are assembled, the axial screw hole is aligned with the insert nut on the front insulating plate, and the axial screw is passed through the axial screw hole and rotated into the insert nut to tighten, so as to fix the front end of the shell and the rear end of the front insulating plate;

[0016] The rear end of the shell is located on the inner wall of the shell cavity and is provided with multiple groups of limiting ribs. Each group of limiting ribs includes three ribs. The middle rib is concave and is used to place the left and right two of the limiting bosses. The ribs on both sides of the three ribs are used to prevent the lock wire pressing tube from rotating. The rear end of the shell is located in the cavity of the shell cavity and a stud is provided. The stud has two functions: to connect and fix the tail cover through 3 self-tapping screws; and to seal with the stud sealing hole. When installing, the stud is placed in the stud sealing hole, and the ribs of the stud sealing hole are sealed with the outer ring of the stud.

[0017] A tail cover installation cavity is arranged in the rear end edge of the shell body, which is used for sealing with the sealing rib of the shell body on the tail cover.

[0018] Furthermore, a cable crimping hole for the cable to pass through is provided in the middle of the wire locking crimping tube, and a limiting boss extending outward is provided on the edge of the rear end tube of the wire locking crimping tube to prevent the wire locking crimping tube from moving forward and backward and twisting. The forward and backward movement depends on the middle rib and the stop column of the limiting rib, and the twisting depends on the ribs on both sides of the limiting rib.

[0019] Furthermore, a cable sealing hole for the cable to pass through is provided at the center of the tail cover along the axis. This component is the outer soft rubber coating of the tail cover. The front end of the tail cover is inserted into the rear end of the shell. In order to make the two fixed firmly, a boss protruding forward is provided at the front end of the tail cover. The outer surface of the boss is provided with a shell sealing rib. This component is the outer soft rubber coating of the tail cover. It is sealed with the tail cover installation cavity at the rear end of the shell, and the sealing level reaches IP67.

[0020] A plurality of stud sealing holes are arranged on the front end surface of the boss. This component is the outer soft rubber coating of the tail cover, which matches the studs at the rear end of the shell; a plurality of stop posts are arranged on the front end surface of the boss.

[0021] Furthermore, the tail cover is also provided with screw mounting holes which penetrate the front and rear ends, and is fastened to the rear end of the shell body by passing self-tapping screws through the screw mounting holes.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the tail cover of the present invention is a rubber-coated part, the inner frame is PC plastic, and the outer coating is TPE or TPU soft rubber, which has the dual functions of sealing IP67 and fixing the lock wire crimping tube. After the lock wire crimping tube is assembled in place, the tail cover is directly installed into the housing and fixed with screws to complete the sealing and fixing, and the sealing can reach IP67. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an exploded view of the sealing structure of the present invention;

[0024] Figure 2 is a top view of the front insulation board;

[0025] Figure 3 is a schematic diagram of the structure of the front insulation plate;

[0026] Figure 4 It is the main view of the core body;

[0027] Figure 5 is a top view of the rear insulation board;

[0028] Figure 6 is the front view of the rear insulation board;

[0029] Figure 7 is a rear view of the rear insulation board;

[0030] Figure 8 is a side view of the shell;

[0031] Fig. 9 is a front view of the shell;

[0032] Fig.10 is a rear view of the shell;

[0033] Fig.11 This is a schematic diagram of the lock wire pressure tube structure;

[0034] Fig.12 This is the front view of the tail cover;

[0035] Fig.13 This is the rear view of the tail cover;

[0036] Fig.14 This is a schematic diagram of the soft glue and frame of the tail cover;

[0037] Fig.15 It is a schematic diagram of the cable structure;

[0038] Fig.16 This is the installation diagram of the cable passing through the tail cover and the locking wire crimping tube;

[0039] Fig.17 This is a schematic diagram of the installation of the cable passing through the housing;

[0040] Fig.18 This is the installation diagram of the lock wire crimping tube and the housing;

[0041] Fig.19 It is a right side view of the sealing structure;

[0042] Fig. 20 yes Fig.19 Sectional view of AA.

[0043] Reference numerals:

[0044] 1. front insulation board, 1-1, core installation cavity, 1-2, buckle, 1-3, insert nut, 1-4, buckle groove of front insulation board;

[0045] 2. Core part, 2-1. Cable crimping barrel, 2-2. Positioning surface, 2-3. Anti-rotation flat position;

[0046] 3. Rear insulating plate, 3-1. Inner cavity for fixing core components, 3-2. Positioning surface for core components, 3-3. Position for preventing core components from rotating and flattening, 3-4. Buckle for rear insulating plate;

[0047] 4. Shell, 4-1. Stud, 4-2. Limiting rib, 4-3. Tail cover installation cavity, 4-4. Shell cavity, 4-5. Shell buckle groove, 4-6. Positioning rib, 4-7. Axis screw hole;

[0048] 5. Locking wire pressing tube, 5-1. Limiting boss, 5-2. Cable crimping hole;

[0049] 6. Tail cover, 6-1. Shell sealing rib, 6-2. Stud sealing hole, 6-3. Cable sealing hole, 6-4. Stop column, 6-5. Screw mounting hole;

[0050] 7. Self-tapping screws;

[0051] 8. Cable, 8-1. Outer sheath, 8-2. Cable core wire;

[0052] 9. Axis screw. DETAILED DESCRIPTION

[0053] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0054] In the description of the patent of the present invention, it should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the listed elements but also other elements not explicitly listed.

[0055] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, the front end direction of the charging gun is referred to as “front”, and the rear end direction of the charging gun is referred to as “rear”.

[0058] The present invention is an integrated charging gun tail outlet fixing and sealing device, the specific structure of which is shown in Figure 1-20 As shown, it includes: a front insulating plate 1, a core member 2, a rear insulating plate 3, a shell 4, a locking wire crimping tube 5 and a tail cover 6.

[0059] The structure of the front insulating plate 1 is shown in Figure 2 and Figure 3As shown, the rear end of the front insulating plate 1 is provided with an embedded tube protruding forward, the middle of the front insulating plate is provided with a core installation cavity 1-1 in the embedded tube circle, a plurality of buckles 1-2 are provided on the rear end outer wall of the embedded tube, a plurality of front insulating plate buckle grooves 1-4 are provided on the front end outer wall of the embedded tube, an insert nut 1-3 is provided on the rear end outer wall of the embedded tube, and the insert nut 1-3 is injection molded in the front insulating plate 1. The front insulating plate 1 is fixed to the housing 4 by the buckle 1-2 and the axial screw 9.

[0060] The core installation cavity requirements of the front insulating plate 1 are designed based on P37-38 in "IEC 62196-2:2016". From the figure, there are a total of 7 cavities: two smaller cavities on the top, which are signal cores for transmitting signals; and 5 larger cavities on the bottom, which are power and grounding cores for transmitting current and grounding.

[0061] The structure of the core 2 is shown in Figure 4 As shown, the front end of the core 2 is provided with a cable crimping barrel 2-1 for crimping the cable; the rear end of the cable crimping barrel is provided with a positioning surface 2-2 and an anti-rotation flat position 2-3. The cable crimping barrel 2-1 is placed in the core crimping barrel placement cavity 3-1.

[0062] The structure of the rear insulation plate 3 is shown in Figure 5-Figure 7 As shown, a core crimping tube placement cavity 3-1 is provided in the middle of the front end of the rear insulating plate 3, and a core positioning surface 3-2 and a core anti-rotation flattening position 3-3 are provided inside the core crimping tube placement cavity 3-1, the positioning surface 2-2 cooperates with the core positioning surface 3-2 for stopping, and the anti-rotation flattening position 2-3 cooperates with the core anti-rotation flattening position 3-3; rear insulating plate buckles 3-4 are provided around the rear end edge of the rear insulating plate 3; the insulating plate buckles 3-4 on the rear insulating plate 3 match the front insulating plate buckle grooves 1-4 on the front insulating plate 1, and the rear insulating plate 3 is fixed to the front insulating plate 1 by the clamping of the rear insulating plate buckles 3-4 and the front insulating plate buckle grooves 1-4.

[0063] The structure of the housing 4 is shown in Figure 8-Figure 9As shown, a shell cavity 4-4 is provided at the center of the shell 4 along the axis for the cable 8 to pass through, and a shell buckle groove 4-5 is provided on the front inner cavity wall of the shell 4. The shell buckle groove 4-5 matches the buckle 1-2 on the front insulating plate 1, and the front insulating plate and the shell 4 are fixed by the buckle 1-2 and the shell buckle groove 4-5. A positioning rib 4-6 is also provided on the front inner cavity wall of the shell 4 behind the shell buckle groove 4-5, which is used to fix the rear end of the rear insulating plate 3 to prevent the rear insulating plate 3 from rotating. An axial screw hole 4-7 is provided on the front outer wall of the shell 4. When the shell 4 and the front insulating plate 1 are assembled, the axial screw hole 4-7 is aligned with the insert nut 1-3 on the front insulating plate 1, and the axial screw 9 passes through the axial screw hole 4-7 and rotates into the insert nut 1-3 to tighten, thereby fixing the front end of the shell 4 and the rear end of the front insulating plate 1.

[0064] Rear view of the housing Fig.10 As shown, the rear end of the shell is located on the inner wall surface of the shell cavity 4-4 and is provided with multiple groups of limiting ribs 4-2, each group of limiting ribs 4-2 includes three ribs, the middle rib is concave, and is used to place the left and right two of the limiting bosses 5-1, and the ribs on both sides of the three ribs are used to prevent the locking wire pressing tube 5 from rotating.

[0065] The rear end of the housing 4 is located in the housing inner cavity 4-4 and is provided with a stud 4-1, which has two functions: to connect and fix the tail cover through three self-tapping screws; and to seal with the stud sealing hole 6-2. When installing, the stud 4-1 is placed in the stud sealing hole 6-2, and the ribs of the stud sealing hole 6-2 are sealed with the outer ring of the stud 4-1.

[0066] A tail cover installation cavity 4 - 3 is provided in the rear end edge of the shell 4 for sealing with the sealing rib 6 - 1 of the shell on the tail cover 6 .

[0067] The structure of the locking wire pressure tube 5 is shown in Fig.11 As shown, the middle of the locking wire crimping tube 5 is provided with a cable crimping hole 5-2 for the cable 8 to pass through, and the rear end tube edge of the locking wire crimping tube 5 is provided with a limiting boss 5-1 extending outward to prevent the locking wire crimping tube 5 from moving forward and backward and twisting. The forward and backward movement depends on the middle rib and stop column 6-4 of the limiting rib 4-2, and the twisting depends on the ribs on both sides of the limiting rib 4-2. The locking wire crimping tube 5 is fixed on the outer sheath 8-1 by crimping.

[0068] The structure of the tail cover 6 is shown in Fig.14 As shown, it is composed of an outer soft rubber coating and a skeleton plug-in, see Fig.12As shown, a cable sealing hole 6-3 for the cable 8 to pass through is provided along the axis at the center of the tail cover, and the front end of the tail cover 6 is inserted into the rear end of the shell 4. In order to make the two firmly fixed, a forward-protruding boss is provided at the front end of the tail cover 6, and a shell sealing rib 6-1 is provided on the outer surface of the boss. This component is the outer soft rubber coating of the tail cover 6, and is sealed with the tail cover installation cavity 4-3 at the rear end of the shell 4, and the sealing level reaches IP67.

[0069] A plurality of stud sealing holes 6-2 are provided on the front end surface of the boss. This component is the outer soft rubber coating of the tail cover, which matches the stud 4-1 at the rear end of the shell 4 to achieve sealing.

[0070] A plurality of stop posts 6 - 4 are arranged on the front end surface of the boss; this component is the frame of the tail cover, and the frame is injection-molded by PC material.

[0071] The tail cover 6 is also provided with screw mounting holes 6-5 which pass through the front and rear ends, see Fig.13 As shown, the self-tapping screw 7 passes through the screw mounting hole 6-5 and is fastened to the rear end of the housing 4.

[0072] The structure of the cable 8 is shown in FIG. Fig.15 As shown, the cable 8 includes a cable core 8 - 2 and an outer sheath 8 - 1 that wraps the cable core 8 - 2 .

[0073] The following is a further explanation of the assembly relationship between parts:

[0074] The structure of cable 8 is shown in Fig.15 As shown, at the front end of the cable 8, the outer sheath 8-1 is stripped off to expose the inner cable core 8-2.

[0075] The front end of the cable 8 passes through the cable sealing hole 6-3 in the tail cover 6, and then passes through the cable crimping hole 5-2 of the locking wire crimping tube 5. After the front end of the cable 8 passes through the locking wire crimping tube 5 for a certain length, the cable crimping hole 5-2 and the outer sheath 8-1 of the cable 8 are crimped. Fig.16 shown.

[0076] Then the front end of the cable 8 continues to pass through the housing inner cavity 4-4 in the housing 4, so that the locking wire crimping tube 5 is placed into the housing inner cavity 4-4 at the rear end of the housing 4, and then the locking wire crimping tube 5 is rotated to Fig.17 As shown, the left boss of the locking wire crimping tube 5 is rotated to between the upper left stud 4-1 and the left limiting rib 4-2; the middle boss is rotated to the left side of the upper right stud 4-1; the right boss is rotated to below the right limiting rib 4-2. The locking wire crimping tube 5 can pass through the housing inner cavity 4-4, and then the locking wire crimping tube 5 can be crimped.

[0077] The front end cable core wire 8 - 2 of the cable 8 is passed through the core fixing cavity 3 - 1 on the rear insulating plate 3 , and then crimped with the cable crimping barrel 2 - 1 on the core 2 .

[0078] The core 2 is fixed in the core fixing cavity 3-1 on the rear insulating plate 3, and the positioning surface 2-2 cooperates with the core positioning surface 3-2 to stop the core 2, and the anti-rotation flattening position 2-3 cooperates with the core anti-rotation flattening position 3-3 to prevent the core 2 from rotating.

[0079] Then, the rear insulating plate 3 is installed into the front insulating plate 1 and pre-fixed with the rear insulating plate buckles 3 - 4 and the front insulating plate buckle grooves 1 - 4 on the front insulating plate 1 .

[0080] The cable 8 and the wire locking tube 5 are retracted, and the front insulating plate 1 and the shell 4 are clamped together with the shell clamp groove 4-5 through the buckle 1-2, and the axial screw 9 passes through the axial screw hole 4-7 and is rotated into the insert nut 1-3 to be tightened, thereby fixing the front end of the shell 4 and the rear end of the front insulating plate 1.

[0081] To fix the lock wire pressing tube 5, rotate the lock wire pressing tube 5 to the position as shown in the figure. Fig.18 As shown, the limiting boss 5-1 is then placed into the limiting rib 4-2 (specifically, the limiting bosses 5-1 on the left and right sides of the lock wire pressing tube are placed between the upper and lower ribs of 4-2 and face to face with the middle rib). The limiting rib 4-2 is used to prevent the lock wire pressing tube 5 from rotating and moving forward.

[0082] The tail cover 6 is placed into the tail cover installation cavity 4-3, and the upper shell sealing rib 6-1 of the tail cover 6 is placed into the tail cover installation cavity 4-3 for sealing, and then the self-tapping screw 7 is passed through the screw installation hole 6-5 to be fastened to the rear end stud 4-1 of the shell 4. The tail cover 6 is fixed to the shell 4. The stop column 6-4 is used to prevent the lock wire pressure tube 5 from moving backward. The stud sealing hole 6-2 is used to seal the stud 4-1.

[0083] After installation, see Figure 19-20 As shown, from front to back, the front insulating plate 1, the core member 2, the rear insulating plate 3, the shell 4, the locking wire crimping tube 5 and the tail cover 6 are tightly connected in sequence.

[0084] The tail cover of the present invention can protect the cable and the housing at the same time, and the protection level can reach IP67. The tail cover and the housing can jointly realize the forward and backward movement and twisting of the locking wire crimping tube.

[0085] The existing tail structure has one part for sealing function and another part for fixing, while the tail cover described in this patent realizes both the protection function and the fixing function with only one part, which is relatively simple to assemble and saves the time of assembling the sealing part and the fixing part together in the existing products.

[0086] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An integrated charging gun tail outlet fixing and sealing device, characterized in that it includes: A front insulating plate (1), a core member (2), a rear insulating plate (3), a housing (4), a locking wire crimping tube (5) and a tail cover (6); The cable passes through the tail cover (6), the locking wire crimping tube (5), and the housing (4) and is crimped into the core member (2); The core member (2) is inserted into the cavity of the rear insulating plate (3), and the rear insulating plate (3) is fastened in the cavity of the front insulating plate (1); The locking wire pressing tube (5) is inserted into the rear end cavity of the housing (4), and the tail cover (6) is sealed at the rear end of the housing (4); The front end of the shell (4) is sleeved on the rear end of the front insulating plate (1); The rear end of the front insulating plate (1) is provided with an embedded tube protruding forward, a core piece installation cavity (1-1) is provided in the middle of the front insulating plate and located in the embedded tube ring, a plurality of buckles (1-2) are provided on the rear end outer wall of the embedded tube, and a plurality of front insulating plate buckle grooves (1-4) are provided on the front end outer wall of the embedded tube; The front end of the core piece (2) is provided with a cable crimping barrel (2-1); the rear end of the cable crimping barrel (2-1) is provided with a positioning surface (2-2) and an anti-rotation flattening position (2-3); A core crimping tube placement cavity (3-1) is provided in the middle of the front end of the rear insulating plate (3), a core crimping tube placement cavity (3-1) is provided inside a core positioning surface (3-2) and a core anti-rotation flattening position (3-3), the positioning surface (2-2) matches with the core positioning surface (3-2), and the anti-rotation flattening position (2-3) matches with the core anti-rotation flattening position (3-3); a rear insulating plate buckle (3-4) is provided around the rear end edge of the rear insulating plate (3); the insulating plate buckle (3-4) on the rear insulating plate (3) matches with the front insulating plate buckle groove (1-4) on the front insulating plate (1); A shell inner cavity (4-4) is provided at the center of the shell (4) along the axis for the cable (8) to pass through, and a shell buckle groove (4-5) is provided on the front inner cavity wall of the shell (4), and the shell buckle groove (4-5) matches the buckle (1-2) on the front insulating plate (1); The middle of the locking wire crimping tube (5) is provided with a cable crimping hole (5-2) for the cable (8) to pass through, and the rear end tube edge of the locking wire crimping tube (5) is provided with a limiting boss (5-1) extending outward; the rear end of the shell is located on the inner wall surface of the shell cavity (4-4), and a plurality of groups of limiting ribs (4-2) are provided, and the limiting ribs (4-2) cooperate with the upper limiting boss (5-1) of the locking wire crimping tube (5); A cable sealing hole (6-3) for the cable (8) to pass through is provided at the center of the tail cover (6) along the axis, the front end of the tail cover (6) is inserted into the rear end of the shell (8), a boss protruding forward is provided at the front end of the tail cover (6), a shell sealing rib (6-1) is provided on the outer side surface of the boss, a tail cover installation cavity (4-3) is provided in the rear end edge of the shell (4), and the shell sealing rib (6-1) is sealed and matched with the tail cover installation cavity (4-3) at the rear end of the shell (4); The rear end of the shell (4) is located in a cavity of the shell inner cavity (4-4) and is provided with a stud (4-1); the front end surface of the boss of the tail cover (6) is provided with a plurality of stud sealing holes (6-2), and the stud sealing holes (6-2) match the studs (4-1) at the rear end of the shell (4); The tail cover (6) is also provided with a screw mounting hole (6-5) which passes through the front and rear ends, and is fastened to the rear end of the housing (4) by passing a self-tapping screw (7) through the screw mounting hole (6-5).

2. The integrated charging gun tail outlet fixing and sealing device according to claim 1 is characterized in that: An insert nut (1-3) is provided on the rear end outer wall of the embedded tube of the front insulating plate (1), and the insert nut (1-3) is injection molded in the front insulating plate (1); an axial screw hole (4-7) is provided on the front end outer wall surface of the shell (4); when the shell (4) and the front insulating plate (1) are assembled, the axial screw hole (4-7) is aligned with the insert nut (1-3) on the front insulating plate (1), and the axial screw (9) is passed through the axial screw hole (4-7) and rotated into the insert nut (1-3) to be tightened, thereby fixing the front end of the shell (4) and the rear end of the front insulating plate (1).

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