WO2023125800A1 - Integrated charging gun, and terminal assembly thereof - Google Patents

Abstract

The present application relates to the field of charging gun apparatuses, in particular to a terminal assembly. The terminal assembly comprises terminals and a terminal fixing bracket. Each terminal comprises: a head portion and a tail portion, which are positioned at two ends of the terminal; and a fixing portion, which is positioned between the head portion and the tail portion, wherein the surface of the fixing portion is recessed towards the axis of the fixing portion to form a groove. The terminal fixing bracket comprises a bottom plate, and a plurality of fixing seats which are arranged on the bottom plate in a protruding manner, wherein the fixing seats are clamped to the grooves, so as to fix the terminals; and the bottom plate is provided with through holes, which correspond to the fixing seats, so as to allow the tail portions of the terminals to pass therethrough. The material cost for manufacturing a terminal can be reduced by means of designing the position where the terminal is fixed to be a groove. Further provided in the present invention is an integrated charging gun, wherein inner mounting through holes are formed in a gun head of the charging gun, and fixing seats are sleeved in the inner mounting through holes and are tightly pressed thereby, such that the fixing seats strengthen the clamping of the terminals.

Description

Integrated charging gun and its terminal assembly technical field

The application belongs to the technical field of charging gun equipment, and in particular relates to an integrated charging gun and a terminal assembly thereof.

Background technique

New energy vehicles are attracting more and more consumers with their advantages of environmental protection, energy saving and quietness, and unlimited driving. New energy electric vehicles are charged through charging piles. The output terminals of the charging piles are equipped with charging guns to connect to the car. The conductive terminals in the charging guns carry current.

The pin terminal of the charging gun is a component that connects the charging pile to the electric vehicle socket to realize current and signal transmission. Generally, it is formed by turning and processing a metal bar, and then the surface is treated to form a finished product. When assembling the whole gun, the tail of the pin terminal It is crimped with the cable to form a whole, and then put into the shell of the charging gun. At present, the design of the terminals in most charging guns is usually to protrude the surface of the fixed end along its radial direction into a clamping outer ring in the shape of a flange, and then clamp the outer ring through the plastic clamping head of the terminal holder. Clamping is performed to ensure the stability of the terminal connection, but this increases the overall radial length of the terminal, resulting in high material costs for terminal manufacturing.

Contents of the invention

The purpose of the present invention is to provide a terminal assembly to solve the technical problem that the fixed end of the terminal in the current charging gun is designed as a flange so that the overall radial length of the terminal is large, resulting in high cost of terminal manufacturing materials.

The present application provides a terminal assembly, including a terminal, which includes a head and a tail located at both ends of the terminal, and a fixing part located between the head and the tail, and the outer surface of the fixing part is recessed toward its axis A groove is formed; the terminal fixing bracket includes a bottom plate and a plurality of fixing seats protruding from the bottom plate, the fixing seats snap into the groove to fix the terminal, and the bottom plate is provided with The through hole corresponding to the fixing seat is for the terminal to pass through.

In some embodiments of the present application, the fixing seat includes an elastic protruding arm protruding from the surface of the bottom plate and a C-shaped fixing clip with an opening formed by the extending end of the elastic protruding arm.

In some embodiments of the present application, the C-shaped fixing clip is provided with a clamping portion located inside the opening and two guiding slopes located outside the opening and communicating with the outside world at the opening.

In some embodiments of the present application, the C-shaped fixing clip is further provided with two ribs connecting the clamping portion and each of the guiding slopes.

In some embodiments of the present application, one fixing seat is arranged in the middle of the bottom plate of the terminal fixing bracket, and six fixing seats with openings facing outwards are arranged on the outer periphery of the bottom plate.

In some embodiments of the present application, the surface of the terminal is provided with a plurality of terminal sealing grooves for matching with the sealing ring, and the terminal sealing grooves are arranged on a side of the groove close to the head.

In some embodiments of the present application, the integrated charging gun includes the above-mentioned terminal assembly.

In some embodiments of the present application, the integrated charging gun includes an integrated gun body shell and a gun head inserted into the front end of the gun body shell, and a plurality of internal installation through holes are formed in the gun head for the sleeve The terminal and the fixing seat are provided, and the fixing seat is pressed by the inner installation hole, so that the fixing seat strengthens the fastening of the terminal.

In some embodiments of the present application, the outer surface of the gun head is provided with a plurality of protrusions arranged in the circumferential direction, and the inner surface of the front end of the gun body shell is arranged with a plurality of concaves in the circumferential direction, the After the gun head is inserted into the front end of the gun body shell, the protrusion and the recess are engaged to prevent the gun head from rotating.

In some embodiments of the present application, the outer surface of the gun tip insertion part is provided with a plurality of gun tip sealing grooves that cooperate with the sealing ring, so that the contact surface between the gun tip and the gun body shell is sealed. .

Compared with the prior art, the beneficial effects produced by the embodiments of the present application are:

The invention provides a terminal assembly, which includes a terminal and a terminal fixing bracket. The terminal includes a head and a tail at its two ends, and a fixing part between the head and the tail. The surface of the fixing part is recessed toward its axis to form a groove; The fixing seat, the fixing seat is snapped into the groove to fix the terminal, and a through hole corresponding to the fixing seat is opened on the bottom plate for the tail of the terminal to pass through. By designing the fixed position of the terminal in the form of a groove, the manufacturing of the terminal can be reduced. material cost. The present invention also provides an integrated charging gun, the gun head of the charging gun is provided with an inner installation through hole, and the inner installation through hole is sleeved on the fixing seat to press the fixing seat tightly, so that the fixing seat strengthens the clamping of the terminal. solid.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

FIG. 1 is a schematic diagram of the overall structure of an embodiment of a terminal assembly of the present invention;

2 is a schematic structural view of a terminal of an embodiment of the terminal assembly of the present invention;

3 is a schematic structural view of a terminal fixing bracket of an embodiment of a terminal assembly of the present invention;

Fig. 4 is a structural schematic diagram of another viewing angle of Fig. 3;

Fig. 5 is a cross-sectional view of the connection between the terminal assembly, the gun head and the shell of the gun body in an embodiment of the integrated charging gun of the present invention;

Fig. 6 is a schematic structural view of the shell of the gun body of an embodiment of the integrated charging gun of the present invention;

Fig. 7 is a schematic structural view of the gun head of an embodiment of the integrated charging gun of the present invention;

Fig. 8 is a cross-sectional view showing a terminal fixing method of an existing charging gun;

Fig. 9 is a schematic diagram showing the comparison of the radial lengths of the conventional terminal and the terminal of the present invention.

The reference signs are explained as follows:

10, terminal assembly; 11, terminal; 111, head; 112, tail; 113, fixed part; 1131, groove; 1132, terminal sealing groove; 12, terminal fixing bracket; 121, base plate; 1211, through hole; 122 , fixed seat; 1221, elastic convex arm; 1222, C-shaped fixed clip; 1223, guide slope; 1224, convex rib; 13, opening; 14, clamping part; 20, gun body shell; 31. Inner installation through hole; 32. Raised part; 33. Gun head sealing groove; 4. Terminal sealing ring; 5. Gun head sealing ring; 6. Fixing screw; 91. Existing terminal; 92. Front and rear plastic ; 93, clamping the outer ring.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined.

In order to further illustrate the principle and structure of the present invention, preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the elaboration of the specific embodiments of the present invention, all take FIG. 1 as a reference, and define that the gun head is installed at the front end of the gun body shell.

The present application provides a terminal assembly 10 for stably connecting the terminal 11 with the terminal fixing bracket 12 and saving the manufacturing cost of the terminal 11 .

The pin terminal 11 of the charging gun is installed in the charging gun to connect the charging pile with the electric vehicle socket to realize current and signal transmission. Generally, it is integrally formed by turning a metal bar, and then surface treated to form a finished product. The terminal 11 needs to be stably fixed in the charging gun, so as to ensure the normal charging operation of the charging gun.

Referring to FIG. 1 , the terminal assembly 10 includes the terminal 11 and the terminal fixing bracket 12 , and the terminal 11 is clamped on the terminal fixing bracket 12 .

Referring to FIG. 2 , the terminal 11 includes a head 111 and a tail 112 located at both ends of the terminal 11 , and a fixing portion 113 located between the head 111 and the tail 112 .

The head 111 of the terminal 11 is the contact function with the electric vehicle, the tail 112 is the crimping function with the charging cable, and the fixing part 113 is the connection between the terminal 11 and the terminal fixing bracket 12. snap-in position.

The surface of the fixing part 113 is recessed toward the axis to form a groove 1131 , and the groove width of the groove 1131 can be processed into different widths according to requirements.

The surface of the fixed part 113 of the terminal 11 is also provided with a plurality of terminal sealing grooves 1132 that cooperate with the terminal sealing ring 4, and the terminal sealing grooves 1132 are arranged close to the groove 1131, and are arranged on the groove 1131 toward the One side of the head 111 of the terminal 11.

Referring to FIG. 1 , the terminal fixing bracket 12 includes a bottom plate 121 and a plurality of fixing seats 122 protruding from the bottom plate 121 , and the fixing seats 122 cooperate with the grooves 1131 to fasten the terminals 11 .

The fixing seat 122 includes an elastic protruding arm 1221 protruding from the surface of the bottom plate 121 and a C-shaped fixing clip 1222 formed by the extending end of the elastic protruding arm 1221. 122 corresponds to the through hole 1211 for the tail 112 of the terminal 11 to pass through.

Specifically, each elastic protruding arm 1221 has a U-shaped structure and communicates with each corresponding through hole 1211 , and the extension end of each elastic protruding arm 1221 is retracted to form the C-shaped fixing clip 1222 . Please refer to FIG. 3 and FIG. 4 , the opening 13 of the C-shaped fixing clip 1222 is smaller than the elastic protrusion 1221 . The C-shaped fixing clip 1222 is provided with a clamping portion 14 located inside the opening 13 at the opening 13, two guide slopes 1223 located outside the opening 13 and connected to the outside world, and respectively connected to the clamping portion. 14 and two convex ribs 1224 of each of the guide slopes 1223 . The space formed between the two guiding slopes 1223 is larger than the diameter of the terminal 11 at the terminal groove 1331 , and gradually shrinks inward at the two ribs 1224 . The distance between the two ribs 1224 is smaller than the diameter of the terminal 11 at the terminal groove 1331 . The clamping portion 14 is used for clamping the terminal groove 1131 .

When the terminal 11 passes through the opening 13 of the C-shaped fixing clip 1222 laterally from the inside of the through hole 1211, the terminal groove 1131 resists the two guiding slopes 1223 from the outside to the inside, and gradually spreads apart. The C-shaped fixing clip 1222, the elastic protruding arm 1221 is driven by the C-shaped fixing clip 1222 to elastically deform and expand outwards. At this time, the opening 13 is gradually expanded to make the two ribs The distance between 1224 can allow the terminal groove 1131 to pass through. Finally, the terminal groove 1331 is positioned at the clamping portion 14, the elastic protruding arm 1221 restores to its original shape to drive the opening 13 to recover, and the clamping portion 14 clamps the terminal groove 1131 fixed.

The guide slope 1223 can guide the terminal groove 1131 to snap into the clamping portion 14 laterally, and the two raised ribs 1224 can clip the outside of the terminal groove 1131 to prevent the terminal groove 1131 from The terminal groove 1131 is disengaged from the clamping portion 14 . The clamping portion 14 is clamped in the terminal groove 1131, and fixes the terminal 11 at least in the front-rear direction.

In this embodiment, an inner fixing seat 122 is provided at the center of the bottom plate 121 of the terminal fixing bracket 12. When the terminal 11 snaps into the inner fixing seat 122, the terminal 11 is first inserted straight into the through hole 1211 corresponding to the inner fixing seat 122 and then locked laterally. Insert the C-shaped fixing clip 1222 into the way. And base plate 121 periphery is evenly distributed with six outer fixing seats 122, and the opening 13 of C-shaped fixing clip 1222 of outer fixing seat 122 is opened outwards and is not provided with corresponding through-hole 1211, and terminal 11 can be directly adopted laterally to snap into C. The fixed seat 122 on the outer periphery of the bottom plate 121 is snapped into the form of a type fixing clip 1222 .

It can be understood that the number and positions of the fixing seats 122 can be designed and arranged according to actual needs.

The present application also provides an integrated charging gun including the terminal assembly 10 . Please refer to Fig. 5, the integrated charging gun also includes an integrated gun body shell 20 and a gun head 30 inserted into the front end of the gun body shell 20, a plurality of inner installation through holes 31 are formed in the gun head 30, and the inner installation The through hole 31 is a stepped hole, and the terminal 11 and the fixing seat 122 are correspondingly penetrated in the inner mounting through hole 31. The stepped hole structure of the inner mounting through hole 31 makes it compatible with the terminal 11 and the The fixing seat 122 can be closely matched. The fixing seat 122 is pressed by the inner mounting through hole 31 so as to be further pressed inward, so that the clamping portion 14 of the fixing seat 122 is squeezed by the inner mounting through hole 31 to strengthen the contact with the terminal. 11, it also prevents the clamping part 14 from stretching out and makes the terminal 11 unreliably fixed, and can effectively prevent the rotation of the terminal 11; The fixing seat 122 is pressed against the installation through hole 31 , and the fixing seat 122 can be further compressed by screwing the gun head 30 in the front, rear and rotation directions while locking the gun head 30 inwardly.

6 and 7, the outer surface of the gun head 30 is provided with a plurality of protrusions 32 arranged in the circumferential direction, and the inner surface of the front end of the gun body shell 20 is arranged with a plurality of concave parts 21 in the circumferential direction. . After the gun head 30 is inserted into the front end of the gun body shell 20, the protrusion 32 engages with the recess 21 to prevent the gun head 30 from rotating. Specifically in this embodiment, the top outer surface and the bottom outer surface of the gun head 30 are respectively provided with two protrusions 32 along the circumferential direction, and the top and bottom of the inner surface of the front end of the gun body shell 20 are along the circumferential direction. Two recesses 21 are arranged in each case in the circumferential direction.

Please refer to Fig. 7 again, the outer surface of the insertion portion of the gun head 30 is provided with a plurality of gun head seal grooves 33 that cooperate with the gun head sealing ring 5, so that the gun head 30 and the gun body shell 20 The sealing of the contact surface. The terminal 11 installed in the gun head 30, the terminal sealing ring 4 on its outer periphery is pressed by the inner installation through hole 31 of the gun head 30, so as to realize the contact surface between the terminal 11 and the gun head 30 of the seal. By arranging sealing rings on the outer surface of the gun head 30 and the outer surface of the terminal 11 , the gun head 30 of the integrated charging gun can achieve a completely sealed effect.

The process of assembling the terminals 11 into the integrated charging gun 100 is as follows: first, the different terminals 11 are snapped onto the corresponding fixing seats 122 of the terminal fixing bracket 12, and the terminals are fixed The bracket 12 is fixed on the rear end of the gun head 30 from the rear to the front and is fastened in the front and back directions by screws. The inner installation through holes 31 of the gun head 30 are respectively aligned with the terminals 11 and pressed to fix the fixing seats 122 . Then, the gun head 30 fixed with the terminal fixing bracket 12 is fixed on the front end of the integrated gun body shell 20, and then the fixing screw 6 is used to pass through the gun body shell 20 to fix the gun body shell 20. The gun head 30 and the terminal fixing bracket 12 are integrated.

The present invention provides a terminal assembly 10 , which includes the terminal 11 and the terminal fixing bracket 12 . The terminal 11 includes a head 111 and a tail 112 at two ends thereof, and a fixing portion 113 between the head 111 and the tail 112 . The surface of the fixing part 113 is recessed toward its axis to form a groove 1131; the terminal fixing bracket 12 includes a bottom plate 121 and a plurality of fixing seats 122 protruding from the bottom plate 121, and the fixing seats 122 and the groove 1131 is clamped to the fixed terminal 11 . The bottom plate 121 is provided with a through hole 1211 corresponding to the fixing seat 122 for the tail 112 of the terminal 11 to pass through. By designing the fixed position of the terminal 11 as a groove 1131, the number of terminals 11 Material cost of manufacture. The present invention also provides an integrated charging gun, the gun head 30 of the charging gun is provided with an inner installation through hole 31, and the inner installation through hole 31 is sleeved on the fixing seat 122 to secure the fixing seat 122 Compression, so that the fixing seat 122 strengthens the fastening of the terminal 11 .

Please refer to Fig. 8 and Fig. 9, these two figures reflect the existing charging gun and terminal structure, compared with the terminal 91 in the prior art, which is clamped by the front and rear plastic 92, and the existing terminal needs to be provided with a larger Clamping outer ring 93 for being clamped. As shown in FIG. 1 , it can be seen that the terminal 11 of the present invention is fixed by using the clamped structure of the terminal groove 1131 , but the maximum outer diameter of the terminal 11 is obviously smaller than that of the prior art. Therefore, due to the turning process of the metal bar, the diameter of the metal bar is selected based on the maximum outer diameter of the terminal. Compared with the existing terminal, the terminal 11 of the present invention is designed to be recessed toward the axis, which greatly reduces the maximum outer diameter of the terminal 11. diameter, thereby saving the cost of terminal material manufacturing.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

A terminal assembly, characterized in that it comprises: A terminal, which includes a head and a tail located at both ends of the terminal, and a fixing part located between the head and the tail, the outer surface of the fixing part is recessed to form a groove on its axis; The terminal fixing bracket includes a bottom plate and a plurality of fixing seats protruding from the bottom plate, the fixing seats are engaged with the grooves to fix the terminals, and there are holes corresponding to the fixing seats on the bottom plate. through holes for the terminals to pass through. The terminal assembly according to claim 1, wherein the fixing seat comprises an elastic protruding arm protruding from the surface of the bottom plate and a C-shaped fixing clip with an opening formed by the extending end of the elastic protruding arm. The terminal assembly according to claim 2, wherein the C-shaped fixing clip is provided with a clamping portion located inside the opening and two guiding slopes located outside the opening and communicating with the outside world at the opening. . The terminal assembly according to claim 3, wherein the C-shaped fixing clip is further provided with two ribs connecting the clamping portion and each of the guiding slopes. The terminal assembly according to claim 2, wherein one fixing seat is arranged in the middle of the bottom plate of the terminal fixing bracket, and six fixing seats with openings facing outward are arranged on the outer periphery of the bottom plate. The terminal assembly according to claim 5, wherein the surface of the terminal is provided with a plurality of terminal sealing grooves for matching with the sealing ring, and the terminal sealing grooves are arranged on the side of the groove close to the head . An integrated charging gun, characterized in that it comprises the terminal assembly according to any one of claims 1-6. The integrated charging gun according to claim 7, characterized in that it comprises an integrated gun body shell and a gun head inserted into the front end of the gun body shell, and a plurality of internal installation through holes are formed in the gun head for The terminal and the fixing seat are sleeved, and the fixing seat is pressed by the inner mounting hole, so that the fixing seat strengthens the fastening of the terminal. The integrated charging gun according to claim 8, characterized in that, the outer surface of the gun head is provided with a plurality of protrusions arranged along the circumferential direction, and the inner surface of the front end of the gun body shell is arranged along the circumferential direction. A plurality of recesses are arranged, and after the gun head is inserted into the front end of the gun body shell, the protrusion and the recess are engaged to prevent the gun head from rotating. The integrated charging gun according to claim 9, wherein the outer surface of the tip insertion part is provided with a plurality of tip sealing grooves that cooperate with the sealing ring, so that the tip and the tip The contact surface of the gun body shell is sealed.

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