CN214542643U

CN214542643U - Charging socket for carrier

Info

Publication number: CN214542643U
Application number: CN202022987282.2U
Authority: CN
Inventors: 沈香锋
Original assignee: Xuancheng Luxshare Precision Industry Co Ltd
Current assignee: Xuancheng Luxshare Precision Industry Co Ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-10-29
Anticipated expiration: 2030-12-08

Abstract

The embodiment of the utility model provides a carrier is with socket that charges through setting up the through-hole with the terminal bottom, sets up the group and connects the hole in the bottom of terminal shell, and the mounting passes the through-hole and cooperates with the group and connect the hole for terminal and main part can dismantle the connection through the mounting. Through the structure that uses removable terminal, cost of maintenance and maintenance duration can be reduced.

Description

Charging socket for carrier

Technical Field

The utility model relates to an electronic equipment technical field, concretely relates to carrier is with socket that charges.

Background

The socket that charges is electric automobile's important accessory, and the jack when electric automobile damages or reachs the plug life-span after, need change the effect that whole socket pencil just can reach the maintenance, can lead to cost of maintenance height and time long. Therefore, a new charging socket is needed to reduce maintenance cost and maintenance time.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a carrier is with socket that charges through the structure that uses removable terminal, can reduce cost of maintenance and maintenance duration.

An embodiment of the utility model provides a carrier is with socket that charges, the carrier is with socket that charges includes:

a main body; the terminal shell is detachably assembled in the main body and comprises an accommodating cavity, and an assembling hole is formed in the bottom of the accommodating cavity; the terminal is partially arranged in the accommodating cavity and comprises a bottom with a through hole, and the through hole and the assembling hole are correspondingly arranged; the fixing piece penetrates through the through hole to be matched with the assembling hole, so that the terminal is detachably connected with the main body; and the anti-loosening spring is arranged in the terminal and positioned on one side of the fixing piece, and the anti-loosening spring is used for limiting the fixing piece.

Preferably, the terminal includes: the inner shell comprises a cylindrical side wall, a first clamping groove is formed in the side wall of the inner shell, and the first clamping groove is lower than the upper surface of the fixing piece;

the anti-loosening spring is in interference fit with the first clamping groove.

Preferably, the anti-loose spring has a bending limit portion.

Preferably, the bending limiting part corresponds to one side of the fixing part, and the bending limiting part presses against the fixing part.

Preferably, the bending limiting part corresponds to one side of the fixing part and is spaced from the fixing part by a distance.

Preferably, the bottom of the accommodating cavity is provided with a positioning ring protruding inwards, and the bottom of the inner shell is provided with a positioning boss matched with the positioning ring towards the outside direction.

Preferably, a second clamping groove is arranged in the side wall of the inner shell: the terminal further includes:

and the rotary spring is arranged in the second clamping groove.

Preferably, the rotary spring includes: a first connecting ring; a second connection ring; the elastic pieces are fixedly connected with the first connecting ring and the second connecting ring at two ends respectively, the middle of each elastic piece is concave inwards, a preset angle is formed between each elastic piece and the axial direction, and the elastic pieces are arranged at intervals.

Preferably, the outer diameter of the first connection ring is larger than the inner diameter of the inner housing and smaller than the inner diameter of the second locking groove, and the second connection ring has the same size as the first connection ring.

Preferably, the charging socket for a vehicle further includes: and the conductive ring spring is arranged between the inner shell and the terminal outer shell and is respectively and electrically connected with the inner shell and the terminal outer shell.

Preferably, the conductive ring spring is in a shape of a spiral ring.

Preferably, a plurality of conductive ring springs are arranged on the inner peripheral wall of the accommodating cavity at intervals along the axial direction of the terminal and are electrically connected with the rotary spring.

Preferably, the inner peripheral wall of the accommodating cavity comprises an annular fixing groove, and the conductive ring spring is arranged in an accommodating space defined by the fixing groove and the side wall of the inner shell; wherein the conductive ring spring is in interference fit with the accommodating space.

Preferably, the charging socket for a vehicle further includes: and the hand-touch prevention protective cap is provided with a central hole and is fixedly connected with the upper end of the terminal.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1 is an exploded view of a charging socket for a vehicle according to an embodiment of the present invention;

fig. 2 is a schematic view of a charging socket for a vehicle according to an embodiment of the present invention;

fig. 3 is a schematic view of a main body of a charging socket for a vehicle according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a first part of a main body of a charging socket for a vehicle according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a second part of a main body of a charging socket for a vehicle according to an embodiment of the present invention;

fig. 6 is a schematic view of a terminal housing and a terminal of a charging socket for a vehicle according to an embodiment of the present invention;

FIG. 7 is a top view of FIG. 6;

FIG. 8 is a cross-sectional view taken along line AA in FIG. 7;

fig. 9-11 are enlarged views of region 100 in fig. 8 for different implementations of embodiments of the present invention;

fig. 12 is a schematic view of a locking spring of a charging socket for a vehicle according to an embodiment of the present invention;

fig. 13 is a sectional view of an inner case of a charging socket for a vehicle according to an embodiment of the present invention;

fig. 14 is a cross-sectional view of a terminal housing of an embodiment of the invention;

fig. 15 is a schematic view of a rotary spring according to an embodiment of the present invention;

fig. 16 is a schematic diagram of a conductive ring spring according to an embodiment of the present invention.

Description of reference numerals:

10 a main body; 11 a first portion; 12 a second portion; 13 a cover plate; 14 terminal grooves; 15, buckling; 16 a first limiting part; 20 a terminal housing; 21 an accommodating cavity; 211 assembling holes; 212 a positioning ring; 213 fixing grooves; 22 a second limiting part; 30 terminals; 31 an inner shell; 311 a through hole; 312 a first card slot; 313 a second card slot; 314 a limit protrusion; 315 positioning the boss; 32 rotating springs; 321 a first connecting ring; 322 second connecting ring; 323 a spring plate; 40 a fixing member; 50 anti-loosening springs; 51 bending limit part; 60 conductive ring springs; 70 protective hand-touch protection cap; 71 central hole.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout this application, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the embodiments of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

When an element or layer is referred to as being "on," "engaged to," "connected to" or "coupled to" another element or layer, it may be directly on, engaged, connected or coupled to the other element or layer or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on," "directly engaged to," "directly connected to" or "directly coupled to" another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a similar manner. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Spatially relative terms, such as "inner," "outer," "below," "lower," "above," "upper," and the like, are used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.

The electric automobile is a vehicle which takes a vehicle-mounted power supply as power and drives wheels to run by using a motor, and meets various requirements of road traffic and safety regulations. With the increasing global environmental awareness, the popularization rate of electric vehicles is also increasing, but because electric vehicles need to be charged for energy supplement, how to charge electric vehicles is an important subject at present and is also a big problem hindering the popularization of electric vehicles.

The existing charging socket is very inconvenient to replace, if the damaged charging socket needs to be replaced, the whole cable needs to be detached, the damaged charging socket is cut off, and the whole charging socket is replaced again. When the charging socket is maintained, the fact that the terminals of the charging socket are easy to wear and other parts are very good is found, other effective parts of the socket have to be abandoned when the charging socket is maintained and replaced, and huge waste is caused, so that the product of the charging socket is very poor in maintainability and low in maintenance efficiency, and the maintenance cost of the charging socket is greatly increased.

It should be understood that, in the present embodiment, the charging socket may be disposed on the electric vehicle, electrically connected to the battery of the electric vehicle, and electrically connected to the charger through the charging socket to charge the battery of the electric vehicle. In other alternative implementations, the charging socket may also be disposed on the charging post.

Fig. 1 is an exploded view of a charging socket for a vehicle according to an embodiment of the present invention. Fig. 2 is a schematic view of a charging socket for a vehicle according to an embodiment of the present invention. As shown in fig. 1 and 2, the charging socket for a vehicle includes: a main body 10, a terminal housing 20, a terminal 30, a fixing member 40, and a locking spring 50.

Fig. 3 is a schematic view of a main body of a charging socket for a vehicle according to an embodiment of the present invention. Fig. 4 is a schematic structural view of a first part of a main body of a charging socket for a vehicle according to an embodiment of the present invention. Fig. 5 is a schematic structural diagram of a second part of a main body of a charging socket for a vehicle according to an embodiment of the present invention. As shown in fig. 1-5, the body 10 is comprised of a first portion 11, a second portion 12, and a cover 13. The first and

second portions

11, 12 may be removably connected by a snap 15, as shown in fig. 4 and 5. The main body 10 is designed to have a structure in which the first portion 11 and the second portion 12 are detachably coupled, so that the main body 10 can be easily mounted. Meanwhile, when only the first part 11 or the second part 12 is damaged, the damaged part can be correspondingly replaced, and the maintenance cost is reduced. The cover plate 13 covers the terminals when not being charged, so that the waterproof and dustproof effects are achieved, and the terminals can be protected. In the present embodiment, the cover 13 is hinged to the body 10. In other alternative implementations, the cover 13 may also be separate from the body 10.

The body 10 includes a plurality of terminal slots 14 therein, and the terminal slots 14 may be used to secure different types of terminals. In this embodiment, the terminals include a dc positive terminal and a dc negative terminal, which are located in the two larger terminal grooves 14 in the middle. After the terminals are electrically connected with the terminals on the charger, a charging circuit is formed to charge the battery of the electric automobile.

As shown in fig. 6 to 8 and fig. 13 to 14, the terminal housing 20 is detachably assembled in the main body 10, the terminal housing 20 includes a receiving cavity 21, and the bottom of the receiving cavity 21 is provided with an assembling hole 211. In the present embodiment, the assembling hole 211 is a screw hole having an internal thread, and the fixing member 40 is a screw, and the fixing member 40 is detachably screwed to the assembling hole 211; in the present embodiment, the terminal housing 20 is fitted into the two larger terminal grooves 14 of the main body 10 and fixed in the terminal grooves 14. The outer circumference of the terminal housing 20 is provided with a first stopper 16 protruding outward, and the inner wall of the terminal groove 14 is provided with a second stopper 22 protruding inward. The outer diameter of the first position-limiting portion 16 is larger than the inner diameter of the second position-limiting portion 22, and the first position-limiting portion 16 and the second position-limiting portion 22 cooperate to define the relative positions of the terminal housing 20 and the terminal groove 14. The bottom of the terminal housing 20 is electrically connected to a battery of the electric vehicle.

The terminal 30 is partially disposed in the accommodating chamber 21 and includes a bottom portion having a through hole 311, and the through hole 311 and the combining hole 211 are correspondingly disposed. In the present embodiment, the two terminals 30 are a dc positive terminal and a dc negative terminal, respectively. In other alternative implementations, the terminals may be of other types.

The fixing member 40 is matched with the combining hole 211 through the through hole 311, so that the terminal 30 is detachably connected with the main body 10.

In this embodiment, the terminal 30 and the terminal housing 20 are detachably connected by providing a through hole 311 at the bottom of the terminal 30 and then by fitting the fixing member 40 with the coupling hole 211 in the terminal housing 20. When the terminal 30 is damaged, the terminal 30 can be replaced easily by detaching the fixing member 40 and then replacing the terminal 30, so that the maintenance cost can be reduced and the maintenance time can be reduced.

The terminal 30 includes an inner housing 31 and a rotary spring 32. The inner housing 31 includes a cylindrical side wall, a limiting protrusion 314 is provided at a predetermined position on the outer periphery of the side wall of the inner housing 31, the limiting protrusion 314 is annular, and a lower end surface of the limiting protrusion 314 is engaged with an upper end surface of the terminal outer housing 20, as shown in fig. 8, 13, and 14. Thereby, the portion of the inner housing 31 located below the stopper projection 314 is placed in the terminal outer housing 20.

A first locking groove 312 is provided in the side wall of the inner shell 31. In this embodiment, the bottom of the inner wall of the inner shell 31 is provided with a first locking groove 312. The anti-loose spring 50 is disposed in the terminal 30 and located at one side of the fixing member 40, and the anti-loose spring 50 is used for limiting the fixing member 40. Specifically, the anti-loose spring 50 is in interference fit with the first locking groove 312. Specifically, the anti-loosening spring 50 is S-shaped, and is formed by bending a spring steel wire. The first engaging groove 312 is an annular groove, and the size of the groove in the axial direction is substantially equal to or slightly larger than the diameter of the spring steel wire. The diameter of the groove is substantially equal to or slightly smaller than the size of the check spring 50. That is, the distance between the two apexes of the S-shaped spring is substantially greater than the inner diameter of the inner shell 31 and substantially equal to or slightly greater than the diameter of the groove. The S-shaped spring can be placed in the first engaging groove 312 by forming a certain deformation, and the locking spring 50 is restored to the initial state after being placed in the first engaging groove 312 and is engaged with the first engaging groove 312, so that the locking spring 50 cannot fall off from the first engaging groove 312. The S-shaped anti-loosening spring 50 has the advantages of small volume, convenience in installation and the like.

Both ends of the anti-loose spring 50 are disposed in the first engaging groove 312, and the middle of the anti-loose spring 50 has a bending limiting portion 51. The bending limiting portion 51 is an S-shaped middle portion, the bending limiting portion 51 corresponds to one side of the fixing member 40, and the bending limiting portion 51 presses against the fixing member 40. The pressure in the axial direction is applied to the fixing member 40 by the check spring 50, so that the pressure between the screw thread of the fixing member 40 and the screw thread of the combining hole 211 is increased, and the friction force of the fixing member 40 in the horizontal rotation process is increased, thereby preventing the fixing member 40 from being loosened.

As shown in fig. 8 and 9, in an alternative implementation, the first locking groove 312 is located higher than the upper surface of the fixed fixing member 40. That is, the bending stopper 51 is a region in which the middle of the lock spring 50 is depressed downward, and the lock spring 50 abuts against the middle of the upper surface of the fixing member 40.

In another alternative implementation, as shown in fig. 10, the first locking slot 312 is located below the upper surface of the fixed fixing element 40. That is, the middle of the locking spring 50 protrudes upward, the bending stopper 51 is a region where the middle of the locking spring 50 protrudes upward, and the locking spring 50 abuts against the outer periphery of the upper surface of the fixing member 40.

As shown in fig. 11, the bending stopper 51 corresponds to one side of the fixing member 40 and is spaced apart from the fixing member 40. Compared with the implementation shown in fig. 9 and 10, the anti-loose spring 50 of the present application is substantially in a horizontal direction, has no upward protrusion or downward depression, and is relatively simple in shape. When the fixing member 40 moves upward in the axial direction beyond the distance between the bending stopper 51 and the fixing member 40, the lock spring 50 abuts against the fixing member 40, and the fixing member 40 is prevented from moving upward in the axial direction by an excessively large distance and being disengaged from the mating hole.

It should be understood that in alternative implementations, the anti-loosening spring 50 may have other shapes, such as a spiral shape, etc.

As shown in fig. 13 to 14, the bottom of the accommodating chamber 21 has an inwardly protruding positioning ring 212, and the bottom of the inner shell 31 is provided with a positioning boss 315 which is engaged with the positioning ring 212 in an outward direction. That is, the positioning ring 212 at the bottom of the accommodating chamber 21 makes the inner diameter of the bottom of the accommodating chamber 21 smaller than the inner diameter of the upper portion of the accommodating chamber 21, so that the accommodating chamber 21 is a stepped hole. The bottom of the inner shell 31 has a locating boss 315 that mates with the locating ring 212. The positioning ring 212 and the positioning boss 315 are matched to make the inner shell 31 and the terminal outer shell 20 substantially coaxial, meanwhile, the through hole 311 and the positioning boss 315 are coaxial, and the assembly hole 211 and the positioning ring 212 are coaxial, and the positioning ring 212 and the positioning boss 315 are matched to make the through hole 311 and the assembly hole 211 also substantially coaxial to play a positioning role.

As shown in fig. 15, the rotary spring 32 includes: a first connection ring 321, a second connection ring 322, and a spring plate 323. The two ends of the elastic sheet 323 are respectively and fixedly connected with the first connecting ring 321 and the second connecting ring 322, the elastic sheet 323 is a strip with a concave middle part, the elastic sheet 323 has a predetermined angle with the axial direction, and the elastic sheets 323 are arranged at intervals.

The rotary spring 32 is used for electrically connecting with a charger. The diameter of the male terminal of the charger is slightly larger than that of the middle part of the rotary spring 32, and the male terminal is inserted into the rotary spring 32 and presses the elastic sheet 323, so that the charger is electrically connected with the socket. Due to the fact that the elastic sheet 323 is arranged in an inclined mode, the contact area between the rotary spring 32 and the male terminal can be increased, and therefore the stability of electric connection between the socket and the male terminal can be improved.

A second locking groove 313 is arranged in the side wall of the inner shell 31. The second card slot 313 is positioned above the first card slot 312, and the second card slot 313 and the first card slot 312 are spaced apart by a predetermined distance. The rotary spring 32 is disposed in the second card slot 313. The outer diameter of the first connection ring 321 is larger than the inner diameter of the inner shell 31 and smaller than or equal to the inner diameter of the second locking groove 313, and the second connection ring 322 has the same size as the first connection ring 321. The dimension of the second locking groove 313 in the axial direction is greater than or equal to the dimension of the rotary spring 32 in the axial direction.

As shown in fig. 1 and 2, the hand-protecting cap 70 has a central hole 71 and is fixedly connected to the upper end of the terminal 30. The anti-hand-touching protection cap 70 is made of an insulating material, so that an operator can be prevented from releasing the conductive part to get an electric shock. By the engagement of the hand-protecting cap 70 with the second catching groove 313, a space having a dimension in the axial direction substantially equal to that of the torsion spring 32 is formed between the lower surface of the hand-protecting cap 70 and the second catching groove 313, and the torsion spring 32 is held in the second catching groove 313 by the hand-protecting cap 70.

As shown in fig. 8 and 16, the charging socket for a vehicle further includes a conductive ring spring 60. The conductive ring spring 60 is disposed between the inner housing 31 and the terminal outer housing 20, and is electrically connected to the inner housing 31 and the terminal outer housing 20, respectively.

Specifically, the conductive ring spring 60 has a spiral ring shape.

In another alternative implementation, as shown in fig. 16, the conductive ring spring 60 is formed in a circular ring shape in a spiral manner. In the present embodiment, the cross section of the conductive ring spring 60 is circular, and in other alternative implementations, the end surface of the spring may also be oval or square, etc.

In this embodiment, the conductive ring spring 60 disposed in a spiral manner may have a plurality of contact points, so that a stable electrical connection is formed between the inner housing 31 and the terminal outer housing 20.

As shown in fig. 8 and 14, the inner circumferential wall of the accommodating chamber 21 includes a fixing groove 213 having a ring shape, and the conductive ring spring 60 is disposed in an accommodating space defined by the fixing groove 213 and the side wall of the inner housing 31. The conductive ring spring 60 is in interference fit with the accommodating space. Accommodation space and electrically conductive ring spring 60 interference fit, through accommodation space's the electrically conductive ring spring 60 of lateral wall compression, make electrically conductive ring spring 60 give accommodation space's the certain reaction force of lateral wall, make the contact between electrically conductive ring spring 60 and the accommodation space more stable.

Specifically, the inner circumferential wall of the accommodating chamber 21 includes a plurality of fixing grooves 213, and the plurality of fixing grooves 213 are spaced apart in the axial direction. A plurality of conductive ring springs 60 are disposed at intervals along the axial direction of the terminal 30 on the inner peripheral wall of the accommodating chamber 21 and electrically connected to the rotary spring 32. Specifically, the conductive ring spring 60 electrically connects the terminal outer housing 20 and the inner housing 31, and the rotary spring 32 and the inner housing 31, thereby electrically connecting the terminal outer housing 20 and the rotary spring 32. And is electrically connected to a charging circuit of the battery through the terminal housing 20. Therefore, when the male terminal of the charger is electrically connected to the rotary spring 32, the charging circuit of the battery is electrically connected to the power source, thereby charging the battery.

In this embodiment, the plurality of conductive ring springs 60 are disposed along the axial direction, so that the contact points can be further increased, and the stability of the electrical connection between the inner housing 31 and the terminal outer housing 20 can be improved.

The embodiment of the utility model provides a carrier is with socket that charges through setting up the through-hole with the terminal bottom, sets up the group and connects the hole in the bottom of terminal shell, and the mounting passes the through-hole and cooperates with the group connection hole group for terminal and main part can dismantle the connection through the mounting. The maintenance cost and the maintenance time can be reduced by using the structure of the replaceable terminal; it should be further explained that the utility model discloses more through the setting of locking spring to reach the not hard up effect of avoiding screw mounting, and the montage between firm terminal shell and the terminal.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A charging socket for a vehicle, characterized in that the charging socket for a vehicle comprises:

a main body (10);

the terminal shell (20) is detachably assembled in the main body (10) and comprises an accommodating cavity (21), and the bottom of the accommodating cavity (21) is provided with an assembling hole (211);

the terminal (30) is partially arranged in the accommodating cavity (21) and comprises a bottom part with a through hole (311), and the through hole (311) and the assembling hole (211) are correspondingly arranged;

a fixing member (40) which passes through the through hole (311) to be matched with the assembling hole (211) so that the terminal (30) is detachably connected with the main body (10); and

and the anti-loosening spring (50) is arranged in the terminal (30) and positioned on one side of the fixing piece (40), and the anti-loosening spring (50) is used for limiting the fixing piece (40).

2. The charging socket for a vehicle according to claim 1, wherein the terminal (30) includes:

the inner shell (31) comprises a cylindrical side wall, a first clamping groove (312) is formed in the side wall of the inner shell (31), and the first clamping groove (312) is lower than the upper surface of the fixing piece (40);

the anti-loosening spring (50) is in interference fit with the first clamping groove (312).

3. The charging socket for a vehicle according to claim 2, wherein the lock spring (50) has a bending stopper (51).

4. The charging socket for a vehicle according to claim 3, wherein the bending limiting portion (51) corresponds to one side of the fixing member (40), and the bending limiting portion (51) presses against the fixing member (40).

5. The charging socket for a vehicle according to claim 3, wherein the bending stopper (51) corresponds to one side of the fixing member (40) and is spaced apart from the fixing member (40).

6. The charging socket for a vehicle according to claim 2, wherein the bottom of the receiving cavity (21) has an inwardly protruding positioning ring (212), and the bottom of the inner housing (31) is provided with a positioning boss (315) that engages with the positioning ring (212) in an outward direction.

7. The charging socket for a vehicle according to claim 2, wherein a second locking groove (313) is provided in a side wall of the inner housing (31):

the terminal (30) further comprises:

and the rotary spring (32) is arranged in the second clamping groove (313).

8. The charging socket for a vehicle according to claim 7, wherein the rotary spring (32) includes:

a first connecting ring (321);

a second connecting ring (322); and

the elastic sheet (323) is fixedly connected with the first connecting ring (321) and the second connecting ring (322) at two ends respectively, the elastic sheet (323) is in a strip shape with the middle part sunken inwards, a preset angle is formed between the elastic sheet (323) and the axial direction, and the elastic sheets (323) are arranged at intervals.

9. The charging socket for a vehicle according to claim 8, wherein the first connection ring (321) has an outer diameter larger than an inner diameter of the inner housing (31) and smaller than an inner diameter of the second engaging groove (313), and the second connection ring (322) has the same size as the first connection ring (321).

10. The vehicle charging socket according to claim 7, further comprising:

and a conductive ring spring (60) disposed between the inner housing (31) and the terminal outer housing (20) and electrically connected to the inner housing (31) and the terminal outer housing (20), respectively.

11. The charging socket for a vehicle according to claim 10, wherein the conductive ring spring (60) has a spiral ring shape.

12. The charging socket for a vehicle according to claim 10, wherein a plurality of conductive ring springs (60) are provided at intervals along an axial direction of the terminal (30) on an inner peripheral wall of the housing chamber (21) and electrically connected to the rotary spring (32).

13. The charging socket for a vehicle according to claim 11, wherein an inner peripheral wall of the accommodating chamber (21) includes a fixing groove (213) having a ring shape, and the conductive ring spring (60) is disposed in an accommodating space defined by the fixing groove (213) and a side wall of the inner housing (31);

wherein the conductive ring spring (60) is in interference fit with the accommodating space.

14. The vehicle charging socket according to claim 1, further comprising:

a hand-protecting cap (70) having a central hole (71) fixedly connected to the upper end of the terminal (30).