Charging socket for carrier

Abstract

According to the charging socket for the carrier provided by the embodiment of the invention, the anti-loosening spring is configured to be of the S-shaped structure, and the deformation capability of the S-shaped structure is utilized, so that the anti-loosening spring can be placed in the first clamping groove. Therefore, the bent limiting part can be used for limiting the fixing piece, and the stability of the connection between the terminal and the terminal shell is ensured.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of December 8, 2020, an application number of "202011444389.0", and a title of "A Charging Socket for Vehicles". Technical Field

[0002] The present invention relates to the technical field of electronic devices, and particularly to a charging socket for vehicles. Background Art

[0003] A charging socket is an important accessory for electric vehicles. When the jack of an electric vehicle is damaged or reaches the plugging and unplugging service life, the entire socket wire harness needs to be replaced to achieve the repair effect, resulting in high repair costs and long repair time. Therefore, a new type of charging socket is needed to reduce the repair cost and repair time. Summary of the Invention

[0004] In view of this, the present invention provides a charging socket for vehicles, which can reduce the repair cost and repair time by using a structure with detachable terminals.

[0005] An embodiment of the present invention provides a charging socket for vehicles, which includes:

[0006] A main body; a terminal housing detachably assembled in the main body, including a receiving cavity, and a connecting hole is provided at the bottom of the receiving cavity; a terminal, partially disposed in the receiving cavity, including a bottom having a through hole, and the through hole and the connecting hole are correspondingly arranged; a fixing member passing through the through hole and cooperating with the connecting hole to detachably connect the terminal and the main body; and a anti-loosening spring disposed in the terminal and located on one side of the fixing member, and the anti-loosening spring is used to limit the fixing member.

[0007] Preferably, the terminal includes: an inner shell including a cylindrical side wall, and a first card slot is provided in the side wall of the inner shell, and the first card slot is lower than the upper surface of the fixing member;

[0008] The anti-loosening spring is in interference fit with the first card slot.

[0009] Preferably, the anti-loosening spring has a bent limiting portion.

[0010] Preferably, the bent limiting portion corresponds to one side of the fixing member, and the bent limiting portion presses against the fixing member.

[0011] Preferably, the bent limiting portion corresponds to one side of the fixing member and is spaced apart from the fixing member by a distance.

[0012] Preferably, the bottom of the accommodation cavity has a positioning ring protruding inwards, and the bottom of the inner shell is provided with a positioning boss cooperating with the positioning ring towards the outer side direction.

[0013] Preferably, a second card slot is arranged inside the side wall of the inner shell: The terminal further includes:

[0014] A torsion spring, arranged in the second card slot.

[0015] Preferably, the torsion spring includes: a first connection ring; a second connection ring; and a spring piece, with two ends respectively fixedly connected to the first connection ring and the second connection ring. The spring piece is a strip-shaped one with the middle recessed inwards. The spring piece has a predetermined angle with the axis, and a plurality of the spring pieces are arranged at intervals.

[0016] Preferably, the outer diameter of the first connection ring is larger than the inner diameter of the inner shell and smaller than the inner diameter of the second card slot, and the second connection ring has the same size as the first connection ring.

[0017] Preferably, the charging socket for a vehicle carrier further includes: a conductive ring spring, arranged between the inner shell and the terminal housing, and electrically connected to the inner shell and the terminal housing respectively.

[0018] Preferably, the conductive ring spring is in a spiral circular ring shape.

[0019] Preferably, a plurality of conductive ring springs are arranged at intervals along the axial direction of the terminal on the inner peripheral wall of the accommodation cavity, and are electrically connected to the torsion spring.

[0020] Preferably, the inner peripheral wall of the accommodation cavity includes an annular fixing groove, and the conductive ring spring is arranged in the accommodation space surrounded by the fixing groove and the side wall of the inner shell; wherein, the conductive ring spring is in interference fit with the accommodation space.

[0021] Preferably, the charging socket for a vehicle carrier further includes: a anti-touch protection cap, having a central hole, and fixedly connected to the upper end of the terminal.

[0022] An embodiment of the present invention provides a charging socket for a vehicle carrier. By arranging through holes at the bottom of the terminal and arranging assembly holes at the bottom of the terminal housing, and the fixing member passes through the through holes and cooperates with the assembly holes, the terminal and the main body are detachably connected through the fixing member. By using the structure with a replaceable terminal, the maintenance cost and maintenance time can be reduced. Description of the Drawings

[0023] Through the following description of the embodiments of the present invention with reference to the drawings, the above and other objects, features and advantages of the present invention will become clearer. In the drawings:

[0024] Figure 1 is an exploded view of the charging socket for a vehicle carrier according to the embodiment of the present invention;

[0025] Figure 2 is a schematic diagram of the charging socket for a vehicle according to an embodiment of the present invention;

[0026] Figure 3 is a schematic diagram of the main body of the charging socket for a vehicle according to an embodiment of the present invention;

[0027] Figure 4 is a schematic structural diagram of the first part of the main body of the charging socket for a vehicle according to an embodiment of the present invention;

[0028] Figure 5 is a schematic structural diagram of the second part of the main body of the charging socket for a vehicle according to an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram of the terminal housing and terminals of the charging socket for a vehicle according to an embodiment of the present invention;

[0030] Figure 7 is Figure 6 the top view of;

[0031] Figure 8 is along Figure 7 the sectional view taken along line AA in;

[0032] Figures 9 - 11 is the Figure 8 enlarged view of region 100 in different implementation manners of an embodiment of the present invention;

[0033] Figure 12 is a schematic diagram of the anti-loosening spring of the charging socket for a vehicle according to an embodiment of the present invention;

[0034] Figure 13 is the sectional view of the inner shell of the charging socket for a vehicle according to an embodiment of the present invention;

[0035] Figure 14 is the sectional view of the terminal housing according to an embodiment of the present invention;

[0036] Figure 15 is a schematic diagram of the torsion spring according to an embodiment of the present invention;

[0037] Figure 16 is a schematic diagram of the conductive ring spring according to an embodiment of the present invention.

[0038] Explanation of reference numerals:

[0039] 10 Main body; 11 First part; 12 Second part; 13 Cover plate; 14 Terminal slot; 15 Snap; 16 First limiting part; 20 Terminal housing; 21 Accommodating cavity; 211 Group connection hole; 212 Positioning ring; 213 Fixing groove; 22 Second limiting part; 30 Terminal; 31 Inner shell; 311 Through hole; 312 First card slot; 313 Second card slot; 314 Limiting protrusion; 315 Positioning boss; 32 Rotating spring; 321 First connection ring; 322 Second connection ring; 323 Elastic piece; 40 Fixing piece; 50 Anti-loosening spring; 51 Bending limiting part; 60 Conductive ring spring; 70 Anti-touch protection cap; 71 Central hole. Detailed implementation manners

[0040] The following describes the present invention based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. Those skilled in the art can fully understand the present invention without the description of these details. In order to avoid obscuring the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0041] In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only, and the drawings are not necessarily drawn to scale.

[0042] Unless the context clearly requires otherwise, the words such as "including" and "comprising" in this application should be interpreted as having an inclusive meaning rather than an exclusive or exhaustive meaning; that is, it is the meaning of "including but not limited to".

[0043] In the description of the embodiments of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0044] Unless otherwise clearly specified and limited, the terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] When an element or layer is referred to as being "on," "attached to," "connected to," or "coupled to" another element or layer, it can be directly on, attached, connected, or coupled directly 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 attached to," "directly connected to," or "directly coupled to" another element or layer, intervening elements or layers may not be 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.

[0046] For ease of explanation, spatially relative terms such as "inner," "outer," "beneath," "below," "lower," "above," "upper," etc. are used herein to describe the relationship of one element or feature illustrated in the figures to another element or feature. It will be understood that the spatially relative terms are 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, an element described as "beneath" or "below" another element or feature will then be oriented "above" that other element or feature. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented, and the spatially relative descriptors used herein should be interpreted accordingly.

[0047] An electric vehicle refers to a vehicle that uses an on-vehicle power source and is driven by an electric motor to travel, meeting the requirements of road traffic and safety regulations. With the gradual increase in global environmental awareness, the popularity rate of electric vehicles is also gradually increasing. However, since electric vehicles need to be recharged for energy replenishment, currently, how to charge electric vehicles is an important issue and also a major problem hindering the popularization of electric vehicles.

[0048] Existing charging sockets are very inconvenient to replace. If a damaged charging socket needs to be replaced, the entire cable needs to be removed, then the damaged charging socket is cut off, and the entire charging socket is replaced again. During the repair, we also found that the terminals of the charging socket are very easy to wear, while other parts are in good condition. However, when repairing and replacing, other effective components of the socket have to be discarded, resulting in a huge waste. As a result, the maintainability of this kind of product of the charging socket is very poor, the maintenance efficiency is low, and the maintenance cost of the charging socket is greatly increased.

[0049] It should be understood that in this embodiment, the charging socket can be provided on the electric vehicle and electrically connected to the battery of the electric vehicle, and the battery of the electric vehicle is charged by electrically connecting the charging socket and the charger. In other alternative implementation manners, the charging socket can also be provided on the charging pile.

[0050] Figure 1 It is an exploded view of the charging socket for vehicles according to an embodiment of the present invention. Figure 2 It is a schematic diagram of the charging socket for vehicles according to an embodiment of the present invention. As Figure 1 and Figure 2 shown, the charging socket for vehicles includes: a main body 10, a terminal housing 20, terminals 30, a fixing member 40, and a lock washer 50.

[0051] Figure 3 It is a schematic diagram of the main body of the charging socket for vehicles according to an embodiment of the present invention. Figure 4 It is a schematic structural diagram of the first part of the main body of the charging socket for vehicles according to an embodiment of the present invention. Figure 5 It is a schematic structural diagram of the second part of the main body of the charging socket for vehicles according to an embodiment of the present invention. As Figures 1 - 5 shown, the main body 10 is composed of a first part 11, a second part 12, and a cover plate 13. The first part 11 and the second part 12 can be detachably connected by a buckle 15, as Figure 4 and Figure 5 shown. Designing the main body 10 into a structure in which the first part 11 and the second part 12 are detachably connected can facilitate the installation of the main body 10. At the same time, when only the first part 11 or the second part 12 is damaged, the damaged part can also be replaced correspondingly, reducing the maintenance cost. When there is no charging, the cover plate 13 covers the terminals, playing a role in waterproofing and dustproofing, and can protect the terminals. In this embodiment, the cover plate 13 is hinged to the main body 10. In other alternative implementation manners, the cover plate 13 can also be separated from the main body 10.

[0052] The main body 10 includes a plurality of terminal slots 14, and the terminal slots 14 can be used to fix different types of terminals. In this embodiment, the terminals include a DC positive terminal and a DC negative terminal, and the DC positive terminal and the DC negative terminal are located in two larger terminal slots 14 in the middle. After being electrically connected to the terminals on the charger through a plurality of terminals, a charging circuit is formed to charge the battery of the electric vehicle.

[0053] As Figures 6 - 8 and Figures 13 - 14As shown, the terminal housing 20 is detachably assembled within the main body 10. The terminal housing 20 includes a receiving cavity 21, and a assembling hole 211 is provided at the bottom of the receiving cavity 21. In this embodiment, the assembling hole 211 is a threaded hole with internal threads, and the fixing member 40 is a screw. The fixing member 40 is detachably screwed into the assembling hole 211. Furthermore, in this embodiment, the terminal housing 20 cooperates with two relatively large terminal slots 14 in the main body 10 and is fixed in the terminal slots 14. An outwardly protruding first limiting portion 16 is provided on the outer periphery of the terminal housing 20, and an inwardly protruding second limiting portion 22 is provided on the inner wall of the terminal slot 14. The outer diameter of the first limiting portion 16 is greater than the inner diameter of the second limiting portion 22, and the first limiting portion 16 and the second limiting portion 22 cooperate to define the relative positions of the terminal housing 20 and the terminal slot 14. The bottom of the terminal housing 20 is electrically connected to the battery of the electric vehicle.

[0054] A part of the terminal 30 is disposed within the receiving cavity 21, including a bottom portion having a through hole 311, and the through hole 311 is correspondingly disposed with the assembling hole 211. In this embodiment, the two terminals 30 are respectively a DC positive terminal and a DC negative terminal. In other alternative implementation manners, the terminals may also be of other types.

[0055] The fixing member 40 passes through the through hole 311 and cooperates with the assembling hole 211 to detachably connect the terminal 30 and the main body 10.

[0056] In this embodiment, by providing the through hole 311 at the bottom of the terminal 30 and then cooperating the fixing member 40 with the assembling hole 211 in the terminal housing 20, the terminal 30 and the terminal housing 20 are detachably connected. When the terminal 30 is damaged, the terminal 30 can be replaced by removing the fixing member 40, making the terminal 30 easy to replace, reducing the maintenance cost while reducing the maintenance time.

[0057] The terminal 30 includes an inner housing 31 and a return spring 32. The inner housing 31 includes a cylindrical side wall, and 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 the lower end surface of the limiting protrusion 314 cooperates with the upper end surface of the terminal housing 20, as Figure 8 、 Figure 13 and Figure 14 shown. Thus, the part of the inner housing 31 located below the limiting protrusion 314 is placed within the terminal housing 20.

[0058] A first card slot 312 is provided inside the side wall of the inner shell 31. In this embodiment, the first card slot 312 is provided at the bottom of the inner wall of the inner shell 31. The anti-loosening spring 50 is disposed inside the terminal 30, on one side of the fixing member 40, and the anti-loosening spring 50 is used to limit the fixing member 40. Specifically, the anti-loosening spring 50 is in interference fit with the first card slot 312. Specifically, the anti-loosening spring 50 is S-shaped and is specifically formed by bending a spring wire. The first card slot 312 is an annular groove, and the dimension of the groove along the axial direction is basically equal to or slightly larger than the diameter of the spring wire. The diameter of the groove is basically equal to or slightly smaller than the dimension of the anti-loosening spring 50. That is to say, the distance between the two vertices of the S-shaped spring is basically greater than the inner diameter of the inner shell 31 and is basically equal to or slightly larger than the diameter of the groove. The S-shaped spring can be put into the first card slot 312 only after forming a certain deformation. After the anti-loosening spring 50 is put into the first card slot 312, it returns to its initial state and is clamped into the first card slot 312, so that the anti-loosening spring 50 will not fall off from the first card slot 312. The S-shaped anti-loosening spring 50 has the advantages of small volume and convenient installation.

[0059] Both ends of the anti-loosening spring 50 are placed in the first card slot 312, and the middle part of the anti-loosening spring 50 has a bent limiting part 51. The bent limiting part 51 is the middle part of the S shape, the bent limiting part 51 corresponds to one side of the fixing member 40, and the bent limiting part 51 presses against the fixing member 40. By applying an axial pressure to the fixing member 40 through the anti-loosening spring 50, the pressure between the thread of the fixing member 40 and the thread of the assembly hole 211 is increased, and further the friction force during the rotation of the fixing member 40 in the horizontal direction is increased, so that the fixing member 40 can be prevented from loosening.

[0060] As Figure 8 and Figure 9 shown, in an optional implementation manner, the position of the first card slot 312 is higher than the upper surface of the fixed fixing member 40. That is to say, the bent limiting part 51 is a region where the middle part of the anti-loosening spring 50 is recessed downward, and the middle part of the anti-loosening spring 50 and the upper surface of the fixing member 40 are in contact.

[0061] As Figure 10 shown, in another optional implementation manner, the position of the first card slot 312 is lower than the upper surface of the fixed fixing member 40. That is to say, the middle part of the anti-loosening spring 50 bulges upward, the bent limiting part 51 is a region where the middle part of the anti-loosening spring 50 bulges upward, and the anti-loosening spring 50 and the outer periphery of the upper surface of the fixing member 40 are in contact.

[0062] As Figure 11 shown, the bent limiting part 51 corresponds to one side of the fixing member 40 and has a spacing from the fixing member 40. And Figure 9 and Figure 10Compared with the implementation shown, the anti-loosening spring 50 of the present application is basically horizontal, without upward protrusions or downward depressions, and has a relatively simple shape. When the fixing member 40 moves axially upward by more than the distance between the bending limiting portion 51 and the fixing member 40, the anti-loosening spring 50 abuts against the fixing member 40 to prevent the fixing member 40 from moving axially upward by too large a distance and disengaging from the assembly hole.

[0063] It should be understood that in other alternative implementations, the anti-loosening spring 50 can also be of other shapes, such as spiral etc.

[0064] As Figures 13 - 14 shown, the bottom of the receiving cavity 21 has a positioning ring 212 protruding inward, and the bottom of the inner shell 31 is provided with a positioning boss 315 cooperating with the positioning ring 212 on the outer side direction. That is to say, the positioning ring 212 at the bottom of the receiving cavity 21 makes the inner diameter of the bottom of the receiving cavity 21 smaller than the inner diameter of the upper part of the receiving cavity 21, so that the receiving cavity 21 is a stepped hole. The bottom of the inner shell 31 has a positioning boss 315 cooperating with the positioning ring 212. Through the cooperation of the positioning ring 212 and the positioning boss 315, the inner shell 31 and the terminal housing 20 are basically coaxial. At the same time, the through hole 311 and the positioning boss 315 are coaxial, and the assembly hole 211 and the positioning ring 212 are coaxial. Through the cooperation of the positioning ring 212 and the positioning boss 315, the through hole 311 and the assembly hole 211 can also be basically coaxial, playing a positioning role.

[0065] As Figure 15 shown, the torsion spring 32 includes: a first connection ring 321, a second connection ring 322, and a spring piece 323. Both ends of the spring piece 323 are fixedly connected to the first connection ring 321 and the second connection ring 322 respectively. The spring piece 323 is a strip-shaped with a middle portion recessed inward. The spring piece 323 has a predetermined angle with the axis, and a plurality of the spring pieces 323 are arranged at intervals.

[0066] The torsion spring 32 is used for electrical connection with the charger. The diameter of the male terminal of the charger is slightly larger than the diameter of the middle portion of the torsion spring 32. The male terminal is inserted into the torsion spring 32, squeezing the spring piece 323, so that the charger and the socket are electrically connected. Since the spring piece 323 is inclined, the contact area between the torsion spring 32 and the male terminal can be increased, and thus the stability of the electrical connection between the socket and the male terminal can be improved.

[0067] A second card slot 313 is provided in the side wall of the inner shell 31. The second card slot 313 is located 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 torsion spring 32 is disposed in the second card slot 313. The outer diameter of the first connecting ring 321 is greater than the inner diameter of the inner shell 31 and less than or equal to the inner diameter of the second card slot 313, and the second connecting ring 322 has the same size as the first connecting ring 321. The axial dimension of the second card slot 313 is greater than or equal to the axial dimension of the torsion spring 32.

[0068] As Figure 1 and Figure 2 shown, the anti-tentacle protection cap 70 has a central hole 71 and is fixedly connected to the upper end of the terminal 30. The anti-tentacle protection cap 70 is made of an insulating material, which can prevent the operator from touching the conductive part and getting an electric shock. Through the cooperation of the anti-tentacle protection cap 70 and the second card slot 313, a space is formed between the lower surface of the anti-tentacle protection cap 70 and the second card slot 313, and the axial dimension of the space is substantially equal to the axial dimension of the torsion spring 32. The torsion spring 32 is fixed in the second card slot 313 by the anti-tentacle protection cap 70.

[0069] As Figure 8 and Figure 16 shown, the vehicle charging socket further includes a conductive ring spring 60. The conductive ring spring 60 is disposed between the inner shell 31 and the terminal housing 20 and is electrically connected to the inner shell 31 and the terminal housing 20 respectively.

[0070] Specifically, the conductive ring spring 60 is in a spiral circular ring shape.

[0071] As Figure 16 shown, in another alternative implementation, the conductive ring spring 60 is formed in a circular ring shape in a spiral manner. In this embodiment, the cross section of the conductive ring spring 60 is circular. In other alternative implementations, the end face of the spring may also be elliptical or square, etc.

[0072] In this embodiment, the conductive ring spring 60 arranged in a spiral manner can have multiple contact points, so as to form a stable electrical connection between the inner shell 31 and the terminal housing 20.

[0073] As Figure 8 and Figure 14 shown, the inner peripheral wall of the accommodation cavity 21 includes an annular fixing groove 213, and the conductive ring spring 60 is disposed in the accommodation space surrounded by the fixing groove 213 and the side wall of the inner shell 31. The conductive ring spring 60 is in interference fit with the accommodation space. The accommodation space and the conductive ring spring 60 are in interference fit. The side wall of the accommodation space compresses the conductive ring spring 60, so that the conductive ring spring 60 gives a certain reaction force to the side wall of the accommodation space, making the contact between the conductive ring spring 60 and the accommodation space more stable.

[0074] Specifically, the inner peripheral wall of the accommodation cavity 21 includes a plurality of fixing grooves 213, and the plurality of fixing grooves 213 are arranged at intervals in the axial direction. A plurality of conductive ring springs 60 are arranged at intervals along the axial direction of the terminal 30 on the inner peripheral wall of the accommodation cavity 21 and are electrically connected to the torsion spring 32. Specifically, the conductive ring spring 60 electrically connects the terminal housing 20 and the inner housing 31, and the torsion spring 32 and the inner housing 31 are electrically connected, so that the terminal housing 20 and the torsion spring 32 are electrically connected. The terminal housing 20 is electrically connected to the charging circuit of the battery. Therefore, when the male terminal of the charger is electrically connected to the torsion spring 32, the charging circuit of the battery is electrically connected to the power supply, thereby charging the battery.

[0075] In this embodiment, arranging a plurality of conductive ring springs 60 along the axial direction can further increase the contact points and improve the stability of the electrical connection between the inner housing 31 and the terminal housing 20.

[0076] An embodiment of the present invention provides a charging socket for a vehicle. By providing through holes at the bottom of the terminal and providing assembly holes at the bottom of the terminal housing, the fixing member passes through the through holes and is assembled with the assembly holes in a matching manner, so that the terminal and the main body are detachably connected through the fixing member. By using the structure with a replaceable terminal, the maintenance cost and maintenance time can be reduced; it should be further noted that the present invention further provides a anti-loosening spring to avoid loosening of the screw fixing member and to stabilize the assembly between the terminal housing and the terminal.

[0077] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall 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 includes: A terminal housing (20), including a receiving cavity (21), and a connecting hole (211) is provided at the bottom of the receiving cavity (21); A terminal (30), including an inner housing (31), the inner housing (31) is disposed in the receiving cavity (21), the inner housing (31) has a through hole (311) and a first card slot (312), and the through hole (311) and the connecting hole (211) are correspondingly arranged; A fixing member (40), passing through the through hole (311) and fixedly connected to the connecting hole (211); and A anti-loosening spring (50), having an S-shaped structure, the S-shaped structure includes a bent limiting portion (51) and two vertices in the extending direction, the bent limiting portion (51) is located between the two vertices, and the S-shaped structure is configured to be deformed and placed into the first card slot (312), and the bent limiting portion (51) corresponds to the fixing member (40) to limit the fixing member (40).

2. The charging socket for a vehicle according to claim 1, characterized in that The bent limiting portion (51) is located in the middle of the S-shaped structure; The fixing member (40) is a screw, the tail of the screw is threadedly connected to the connecting hole (211), and the head of the screw is oppositely arranged to the bent limiting portion (51).

3. The charging socket for a vehicle according to claim 2, characterized in that , The bent limiting portion (51) includes a first bent section and a second bent section, and the bending directions of the first bent section and the second bent section are opposite; Partial regions of the first bent section and the second bent section away from the first card slot (312) correspond to the screw at the same time.

4. The charging socket for a vehicle according to claim 3, characterized in that , The S-shaped structure further includes: A first insertion end and a second insertion end, the first insertion end is connected to the first bent section and forms one of the vertices at the end, and the second insertion end is connected to the second bent section and forms the other vertex at the end; The first insertion end and the second insertion end extend into the first card slot (312) and extend along the first card slot (312) in opposite directions.

5. The charging socket for a vehicle according to claim 4, characterized in that , The S-shaped structure is formed by bending a spring wire; The first card slot (312) is an annular groove, and the dimension of the first card slot (312) in the axial direction is larger than the diameter of the spring wire.

6. The charging socket for a vehicle according to claim 2, characterized in that , The inner housing (31) has a receiving groove, the through hole (311) is opened at the bottom of the receiving groove, and the receiving groove is connected between the through hole (311) and the first card slot (312); The head of the screw abuts against the bottom of the receiving groove, and the bent limiting portion (51) is in an abutting state or has a spacing from the head of the screw.

7. The charging socket for a vehicle according to claim 6, characterized in that , The S-shaped structure extends along a plane, and the head of the screw is located in the receiving groove; When the head of the screw is in an abutting state with the bent limiting portion (51), the tail of the screw is in a screwed state with the connecting hole (211).

8. The charging socket for a vehicle according to claim 6, characterized in that , The head of the screw extends out of the receiving groove and abuts against the S-shaped structure.

9. The charging socket for a vehicle according to claim 8, characterized in that , The middle of the bent limiting portion (51) bulges and deforms, and the S-shaped structure abuts against the outer periphery of the upper surface of the fixing member (40).

10. The charging socket for a vehicle according to claim 6, characterized in that , The head of the screw is located in the receiving groove, and the bent limiting portion (51) is recessed into the receiving groove and abuts against the head of the screw.

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