CN114530712A

CN114530712A - Integral type rifle that charges and terminal subassembly thereof

Info

Publication number: CN114530712A
Application number: CN202111680760.8A
Authority: CN
Inventors: 陈宇平; 王继发
Original assignee: Kunshan Huihe New Energy Technology Co ltd
Current assignee: Kunshan Huihe New Energy Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-24
Also published as: WO2023125800A1

Abstract

The invention provides a terminal assembly, which comprises a terminal and a terminal fixing bracket. The terminal comprises a head part and a tail part which are positioned at two ends of the terminal, and a fixing part positioned between the head part and the tail part, wherein the surface of the fixing part is sunken towards the axis of the fixing part to form a groove; the terminal fixing support comprises a bottom plate and a plurality of fixing seats arranged on the bottom plate in a protruding mode, the fixing seats are connected with the grooves in a clamping mode to be fixed to the terminals, through holes corresponding to the fixing seats are formed in the bottom plate to allow the tail portions of the terminals to pass through, and the material cost of the terminals can be reduced by designing the positions, fixed by the terminals, of the fixing seats into grooves. The invention also provides an integrated charging gun, wherein an inner mounting through hole is arranged in a gun head of the charging gun, and the inner mounting through hole is sleeved on the fixed seat to tightly press the fixed seat, so that the fixed seat can be used for reinforcing clamping of the terminal.

Description

Integral type rifle that charges and terminal subassembly thereof

Technical Field

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

Background

New energy automobiles attract more and more consumers by virtue of the advantages of environmental protection, energy conservation, silence, no restriction and the like. New forms of energy electric automobile charges through filling electric pile, and the output that fills electric pile all is equipped with the rifle that charges and is used for connecting the car, and conductive terminal in the rifle that charges plays the effect of bearing current.

The contact pin terminal of the charging gun is a part which is connected with the socket of the electric automobile to realize current and signal transmission, generally, the contact pin terminal is integrally formed by turning metal bars, a finished product is formed by surface treatment, and the tail part of the contact pin terminal and a cable are connected into a whole by crimping when the charging gun is assembled, and then a charging gun shell is assembled. At present, the design of the terminal in most charging guns is usually to clamp the outer clamping ring in a flange shape along the radial direction of the fixed end surface of the terminal, and then the plastic clamping head of the terminal fixing frame clamps the outer clamping ring to ensure the connection stability of the terminal, so that the radial length of the whole terminal is increased, and the material cost for manufacturing the terminal is high.

Disclosure of Invention

The invention aims to provide a terminal assembly to solve the technical problem that the terminal fixing end in the existing charging gun is designed into a flange, so that the overall radial length of the terminal is large, and the manufacturing material cost of the terminal is overhigh.

The application provides a terminal assembly, which comprises a terminal, a fixing part and a terminal, wherein the terminal comprises a head part and a tail part which are positioned at two ends of the terminal, and the fixing part is positioned between the head part and the tail part, and the outer surface of the fixing part is sunken towards the axis of the fixing part to form a groove; the terminal fixing support comprises a bottom plate and a plurality of fixing seats convexly arranged on the bottom plate, the fixing seats are clamped and connected with the grooves to fix the terminals, and through holes corresponding to the fixing seats are formed in the bottom plate to allow the terminals to pass through.

In some embodiments of the present application, the fixing base includes a resilient protruding arm formed protruding from the surface of the base plate and a C-shaped fixing clip having an opening formed by an extension end of the resilient 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 inclined planes located outside the opening and communicating with the outside 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 inclined planes.

In some embodiments of the present application, one of the fixing seats is disposed in the middle of the bottom plate of the terminal fixing bracket, and six fixing seats with outward openings are disposed on the periphery of the bottom plate.

In some embodiments of the present application, the terminal surface is provided with a plurality of terminal sealing grooves matched with the sealing ring, and the terminal sealing grooves are disposed on one side of the groove close to the head portion.

In some embodiments of the present application, the integrated charging gun comprises the terminal assembly of any one of claims 1-6.

In some embodiments of this application, this integral type rifle that charges includes integral type rifle body housing and peg graft in the rifle head of rifle body housing front end, form a plurality of interior installation through-holes in the rifle head and be used for the cover establish the terminal with the fixing base, the fixing base quilt interior mounting hole package is pressed, makes the fixing base strengthen to the card of terminal is solid.

In some embodiments of the present application, the outer surface of the lance head is provided with a plurality of protrusions arranged along the circumferential direction, the inner surface of the front end of the lance body housing is provided with a plurality of recesses arranged along the circumferential direction, and after the lance head is inserted into the front end of the lance body housing, the protrusions and the recesses are clamped to prevent the lance head from rotating.

In some embodiments of the present application, the outer surface of the lance tip insertion portion is provided with a plurality of lance tip sealing grooves which are matched with the sealing ring, so that the contact surface between the lance tip and the lance body housing is sealed.

Drawings

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

FIG. 2 is a schematic structural diagram of a terminal according to an embodiment of the terminal assembly of the present invention;

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

FIG. 4 is a schematic view of the structure of FIG. 3 from another perspective;

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

FIG. 6 is a schematic structural diagram of a gun body housing according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a gun head of an embodiment of the integrated charging gun according to the invention;

fig. 8 is a sectional view showing a terminal fixing manner of a conventional charging gun;

fig. 9 is a comparison of the radial length of a conventional terminal and a terminal of the present invention.

The reference numerals are explained below:

10. a terminal assembly; 11. a terminal; 111. a head portion; 112. a tail portion; 113. a fixed part; 1131. a groove; 1132. a terminal seal groove; 12. a terminal fixing bracket; 121. a base plate; 1211. a through hole; 122. a fixed seat; 1221. an elastic convex arm; 1222. a C-shaped fixing clip; 1223. a guide slope; 1224. a rib is protruded; 13. an opening; 14. a clamping portion; 20. a gun body housing; 21. a recess; 30. a gun head; 31. a through hole is arranged inside; 32. a boss portion; 33. a sealing groove of the gun head; 4. a terminal seal ring; 5. a sealing ring of the gun head; 6. fixing screws; 91. an existing terminal; 92. front and back plastics; 93. the outer ring is clamped.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, which are illustrated in the accompanying drawings. In the description of the embodiments of the present invention, the gun head is defined to be mounted at the front end of the gun body housing with reference to fig. 1.

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

The contact pin type terminal 11 of the charging gun is a part which is arranged in the charging gun and is used for connecting the charging pile with an electric automobile socket to realize current and signal transmission, and the part is generally formed by turning and processing a metal bar into a whole and then is subjected to surface treatment to form a finished product. The terminal 11 needs to be stably fixed in the charging gun to ensure the normal 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 portion 111 and a tail portion 112 at two ends of the terminal 11, and a fixing portion 113 between the head portion 111 and the tail portion 112.

The head 111 of terminal 11 is for the contact functional position with electric automobile, and its afterbody 112 is for the crimping functional position with the cable crimping that charges, fixed part 113 is terminal 11 with the position of terminal fixed bolster 12 joint.

The surface of the fixing portion 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 as required.

The surface of the fixing portion 113 of the terminal 11 is further provided with a plurality of terminal sealing grooves 1132 matched with the terminal sealing rings 4, and the terminal sealing grooves 1132 are arranged close to the grooves 1131 and are arranged on one side of the grooves 1131 facing the head portion 111 of the terminal 11.

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

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

Specifically, each of the elastic protruding arms 1221 is U-shaped and communicates with a corresponding through hole 1211, and an extending end of each of the elastic protruding arms 1221 is retracted to form the C-shaped fixing clip 1222. Referring to fig. 3 and 4, the opening 13 of the C-shaped fixing clip 1222 is smaller than the elastic protruding arm 1221. The C-shaped fixing clip 1222 is provided with a clamping portion 14 located inside the opening 13, two guiding inclined surfaces 1223 located outside the opening 13 and communicating with the outside, and two ribs 1224 respectively connecting the clamping portion 14 and each guiding inclined surface 1223 at the opening 13. 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 from the inside of the through hole 1211, the terminal groove 1131 abuts against the two guiding slopes 1223 from the outside to the inside, and gradually expands 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 outward, and at this time, the opening 13 gradually expands to allow the distance between the two protruding ribs 1224 to allow the terminal groove 1131 to pass through. Finally, the terminal groove 1331 is located at the clamping portion 14, the elastic protruding arm 1221 is restored to drive the opening 13 to restore, and the clamping portion 14 clamps and fixes the terminal groove 1131.

The guiding slopes 1223 can guide the terminal grooves 1131 to laterally snap into the clamping portion 14, and the two ribs 1224 can clamp the outer sides of the terminal grooves 1131 to prevent the terminal grooves 1131 from being separated from the clamping portion 14 in the lateral direction. The holding portion 14 holds the terminal 11 in the terminal groove 1131 at least in the front-rear direction.

In this embodiment, one inner fixing seat 122 is disposed at the center of the bottom plate 121 of the terminal fixing bracket 12, and when the terminal 11 is inserted into the inner fixing seat 122, the terminal is inserted into the through hole 1211 corresponding to the inner fixing seat 122 and then inserted into the C-shaped fixing clip 1222. Six outer fixing seats 122 are uniformly distributed on the periphery of the bottom plate 121, the openings 13 of the C-shaped fixing clips 1222 of the outer fixing seats 122 are outwardly opened and are not provided with corresponding through holes 1211, and the terminals 11 can be directly clamped into the fixing seats 122 on the periphery of the bottom plate 121 in a manner of being laterally clamped into the C-shaped fixing clips 1222.

It is understood that the number and the position 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. Referring to fig. 5, the integrated charging gun further includes an integrated gun body housing 20 and a gun head 30 inserted into the front end of the gun body housing 20, a plurality of inner mounting through holes 31 are formed in the gun head 30, the inner mounting through holes 31 are stepped holes, the terminal 11 and the fixing seat 122 are correspondingly inserted into the inner mounting through holes 31, and the stepped hole structure of the inner mounting through holes 31 enables the terminal 11 and the fixing seat 122 to be closely matched with each other. The fixing seat 122 is pressed by the inner mounting through hole 31 to be further pressed inwards, so that the clamping part 14 of the fixing seat 122 is extruded by the inner mounting through hole 31 to strengthen the clamping of the terminal 11, the clamping part 14 is prevented from being outwards expanded to fix the terminal 11 unreliably, and the rotation of the terminal 11 can be effectively prevented; the gun head 30 is arranged opposite to the position where the fixing seat 122 is pressed by the fixing screw 6 corresponding to the inner mounting through hole 31, and the fixing seat 122 can be further pressed by screwing the screw while the gun head 30 is locked in the front and back direction and the rotating direction.

Referring to fig. 6 and 7, the outer surface of the lance head 30 is provided with a plurality of protrusions 32 arranged along the circumferential direction, and the inner surface of the front end of the lance body housing 20 is provided with a plurality of recesses 21 arranged along the circumferential direction. After the lance head 30 is inserted into the front end of the lance body housing 20, the protrusion 32 and the recess 21 are clamped to prevent the lance head 30 from rotating. Specifically, in this embodiment, the tip end 30 is provided with two protrusions 32 on the outer surface of the top and the outer surface of the bottom in the circumferential direction, and two recesses 21 are arranged on the top and the bottom of the inner surface of the front end of the gun body housing 20 in the circumferential direction.

Referring to fig. 7 again, the outer surface of the insertion portion of the lance head 30 is provided with a plurality of lance head sealing grooves 33 which are matched with the lance head sealing ring 5, so as to seal the contact surface between the lance head 30 and the lance body housing 20. And the terminal 11 is installed in the gun head 30, and the terminal sealing ring 4 on the periphery of the terminal 11 is pressed by the inner installation through hole 31 of the gun head 30, so that the contact surface of the terminal 11 and the gun head 30 is sealed. The outer surfaces of the gun head 30 and the terminal 11 are respectively provided with a sealing ring, so that the gun head 30 of the integrated charging gun can realize a complete sealing effect.

The procedure of assembling the terminal 11 into the integrated charging gun 100 is: different terminals 11 are firstly clamped to the fixing seats 122 corresponding to the terminal fixing supports 12, and the terminal fixing supports 12 are fixed at the rear end of the gun head 30 from back to front and are fastened by screws in the front-back direction. The inner mounting through holes 31 of the lance head 30 are respectively aligned with the terminals 11 and press-fit and fix the fixing seats 122. Then, the gun head 30 fixed with the terminal fixing bracket 12 is fixed at the front end of the integral gun body casing 20, and the gun body casing 20, the gun head 30 and the terminal fixing bracket 12 are fixed into a whole by penetrating the gun body casing 20 with the fixing screw 6.

The present invention provides a terminal assembly 10 including the terminal 11 and the terminal fixing bracket 12. The terminal 11 includes a head portion 111 and a tail portion 112 at both ends thereof, and a fixing portion 113 between the head portion 111 and the tail portion 112. The surface of the fixing portion 113 is recessed toward the axis to form a groove 1131; the terminal fixing bracket 12 includes a bottom plate 121 and a plurality of fixing bases 122 protruding from the bottom plate 121, and the fixing bases 122 are engaged with the grooves 1131 to fix the terminals 11. The bottom plate 121 is formed with a through hole 1211 corresponding to the fixing seat 122 for the tail portion 112 of the terminal 11 to pass through, and the position where the terminal 11 is fixed is designed to be the form of the groove 1131, so that the material cost for manufacturing the terminal 11 can be reduced. The invention also provides an integrated charging gun, wherein an inner mounting through hole 31 is arranged in a gun head 30 of the charging gun, and the inner mounting through hole 31 is sleeved on the fixed seat 122 to tightly press the fixed seat 122, so that the fixed seat 122 can be used for reinforcing clamping of the terminal 11.

Referring to fig. 8 and 9, the charging gun and terminal structure shown in the two figures is compared with the prior art in which the terminal 91 is clamped by the front and rear plastic 92, but the prior art terminal needs to be provided with a larger clamping outer ring 93 for being clamped. Referring to fig. 1, it can be seen that the terminal 11 of the present invention is fixed by the structure of the terminal groove 1131, but the maximum outer diameter of the terminal 11 is significantly smaller than that of the terminal of the prior art. Therefore, because the metal bar is turned and formed, the diameter of the metal bar is selected based on the maximum outer diameter of the terminal, and compared with the existing terminal, the terminal 11 of the invention is changed into the design of sinking towards the axis, thereby greatly reducing the maximum outer diameter of the terminal 11 and saving the manufacturing cost of the terminal material.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, but rather is intended to cover all equivalent structural changes made by the use of the specification and drawings. The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A terminal assembly, comprising:

the terminal comprises a head part and a tail part which are positioned at two ends of the terminal, and a fixing part positioned between the head part and the tail part, wherein the outer surface of the fixing part is sunken towards the axis of the fixing part to form a groove;

the terminal fixing support comprises a bottom plate and a plurality of fixing seats convexly arranged on the bottom plate, the fixing seats are clamped and connected with the grooves to fix the terminals, and through holes corresponding to the fixing seats are formed in the bottom plate to allow the terminals to pass through.

2. The terminal assembly of claim 1, wherein said retainer includes a resilient projection formed to project from a surface of said base plate and a C-shaped retaining clip having an opening formed by an extended end of said resilient projection.

3. The terminal assembly according to claim 2, wherein the C-shaped fixing clip is provided at the opening with a clamping portion located inside the opening and two guiding slopes located outside the opening and communicating with the outside.

4. The terminal assembly according to claim 3, wherein two ribs connecting said clamping portion and each of said guide slopes are further provided on said C-shaped fixing clip.

5. The terminal assembly according to claim 2, wherein one of said fixing seats is provided in the middle of said bottom plate of said terminal fixing bracket, and six of said fixing seats having openings facing outward are arranged on the outer periphery of said bottom plate.

6. The terminal assembly of claim 5, wherein said terminal surface defines a plurality of terminal seal grooves for mating with a seal ring, said terminal seal grooves being disposed on a side of said groove adjacent said head portion.

7. An integrated charging gun, characterized by comprising the terminal assembly of any one of claims 1-6.

8. The integrated charging gun according to claim 7, comprising an integrated gun body housing and a gun head inserted into the front end of the gun body housing, wherein a plurality of inner mounting through holes are formed in the gun head for sleeving the terminals and the fixing seats, and the fixing seats are pressed by the inner mounting holes, so that the fixing seats are clamped to the terminals.

9. The integrated charging gun according to claim 8, wherein the outer surface of the gun head is provided with a plurality of protrusions arranged along the circumferential direction, the inner surface of the front end of the gun body housing is provided with a plurality of recesses arranged along the circumferential direction, and after the gun head is inserted into the front end of the gun body housing, the protrusions and the recesses are clamped to prevent the gun head from rotating.

10. The integrated charging gun according to claim 9, wherein the outer surface of the gun head insertion part is provided with a plurality of gun head sealing grooves which are matched with the sealing rings, so that the contact surfaces of the gun head and the gun body housing are sealed.