Charging socket for carrier

Abstract

The embodiment of the invention provides a charging socket for a carrier, a terminal is fixedly connected with a terminal shell through a fixing piece, and a first clamping groove is configured to be higher than the upper surface of the fixing piece. Therefore, the anti-loosening spring is arranged in the first clamping groove, and when the bending limiting part is configured to be sunken downwards and abut against the fixing piece, the fixing piece can be prevented from being loosened from the assembling hole. When a preset distance is reserved between the bending limiting part and the fixing piece, the bending limiting part can play a role in limiting the movement of the fixing piece.

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 a vehicle". Technical Field

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

[0003] A charging socket is an important accessory for an electric vehicle. When the jack of the electric vehicle is damaged or reaches the plugging and unplugging life, the entire socket wiring 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 a vehicle, 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 a vehicle, 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, part of which is disposed in the receiving cavity, including a bottom with 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 lock washer disposed in the terminal and located on one side of the fixing member, and the lock washer 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 lock washer is in interference fit with the first card slot.

[0009] Preferably, the lock washer 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 inward, and the bottom of the inner shell is provided with a positioning boss cooperating with the positioning ring in the outer side direction.

[0013] Preferably, a second card slot is provided in 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 both ends fixedly connected to the first connection ring and the second connection ring respectively. The spring piece is a strip with a middle recessed inward, 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: an 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 providing a through hole at the bottom of the terminal and a connecting hole at the bottom of the terminal housing, and a fixing member passing through the through hole and cooperating with the connecting hole, 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. BRIEF 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 more clear. In the drawings:

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

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

[0026] Figure 3 It 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 It 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 It 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 It 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 top view;

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

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

[0033] Figure 12 It 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 It is a sectional view of the inner shell of the charging socket for a vehicle according to an embodiment of the present invention;

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

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

[0037] Figure 16 It 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 connecting ring; 322 Second connecting 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 present invention will be described below 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, words such as "including" and "comprising" in this application should be construed in an inclusive sense rather than an exclusive or exhaustive sense; 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 terms such as "first" and "second" 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 stated, the meaning of "plurality" is two or more.

[0044] Unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected", "fixed" 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, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. 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 circumstances.

[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 description, 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 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 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 charged to replenish energy, currently, how to charge electric vehicles is an important issue and 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 maintenance, 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 charging socket product 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 through the electrical connection between 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 This is an exploded view of the vehicle charging socket according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the vehicle charging socket according to an embodiment of the present invention. As Figure 1 and Figure 2 shown, the vehicle charging socket includes: a main body 10, a terminal housing 20, terminals 30, a fixing member 40, and a lock washer 50.

[0051] Figure 3 This is a schematic diagram of the main body of the vehicle charging socket according to an embodiment of the present invention. Figure 4 This is a schematic structural diagram of the first part of the main body of the vehicle charging socket according to an embodiment of the present invention. Figure 5 This is a schematic structural diagram of the second part of the main body of the vehicle charging socket 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 where the first part 11 and the second part 12 are detachably connected facilitates 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 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, which 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 connecting hole 211 is provided at the bottom of the receiving cavity 21. In this embodiment, the connecting hole 211 is a threaded hole with internal threads, and the fixing member 40 is a screw, which is detachably screwed into the connecting 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 connecting 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 connecting hole 211 to detachably connect the terminal 30 and the main body 10.

[0056] In this embodiment, by providing a through hole 311 at the bottom of the terminal 30 and then cooperating the fixing member 40 with the connecting 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 torsion 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 and is located 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 in an S shape 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 placed into the first card slot 312 only after forming a certain deformation. After the anti-loosening spring 50 is placed 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 advantages such as 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 alternative implementation, 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 an area where the middle part of the anti-loosening spring 50 is recessed downward, and the middle part of the anti-loosening spring 50 abuts against the middle part of the upper surface of the fixing member 40.

[0061] As Figure 10 shown, in another alternative implementation, 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 an area where the middle part of the anti-loosening spring 50 bulges upward, and the anti-loosening spring 50 abuts against the outer periphery of the upper surface of the fixing member 40.

[0062] As Figure 11 shown, the bent limiting part 51 corresponds to one side of the fixing member 40 and is spaced apart 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 accommodating 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 towards the outer side direction. That is to say, the positioning ring 212 at the bottom of the accommodating cavity 21 makes the inner diameter of the bottom of the accommodating cavity 21 smaller than the inner diameter of the upper part of the accommodating cavity 21, so that the accommodating 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 part 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 part of the torsion spring 32. The male terminal is inserted into the torsion spring 32 to squeeze 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 arranged in the second card slot 313. The outer diameter of the first connecting ring 321 is larger 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 larger 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 basically 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 arranged 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 into a circular ring 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 can 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 accommodating cavity 21 includes an annular fixing groove 213, and the conductive ring spring 60 is arranged in the accommodating 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 accommodating space. The accommodating space and the conductive ring spring 60 are in interference fit. The side wall of the accommodating 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 accommodating space, making the contact between the conductive ring spring 60 and the accommodating 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] The embodiment of the present invention provides a charging socket for a vehicle. By providing a through hole at the bottom of the terminal and a connecting hole at the bottom of the terminal housing, a fixing member passes through the through hole and is assembled with the connecting hole 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 loosening prevention 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 clamping groove (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 the first clamping groove (312) is higher than the upper surface of the fixing member (40); and A lock washer (50), including a bent limiting portion (51), the lock washer (50) is clamped in the first clamping groove (312), and the bent limiting portion (51) is recessed downward and abuts against the upper surface of the fixing member (40), or the bent limiting portion (51) is spaced from the fixing member (40) by a predetermined distance.

2. The charging socket for a vehicle according to claim 1, characterized in that, 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 with the bent limiting portion (51).

3. 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 clamping groove (312); The head of the screw abuts against the bottom of the receiving groove, and the bent limiting portion (51) corresponds to the head of the screw.

4. The charging socket for a vehicle according to claim 3, characterized in that , the head of the screw is located in the receiving groove; When the head of the screw is in a state of abutting against the bent limiting portion (51), the tail of the screw is in a screwed state with the connecting hole (211).

5. The charging socket for a vehicle according to claim 3, characterized in that , the head of the screw extends out of the receiving groove and abuts against the bent limiting portion (51).

6. The charging socket for a vehicle according to claim 3, 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.

7. The charging socket for a vehicle according to claim 2, characterized in that , the lock washer (50) is of an S-shaped structure, and the S-shaped structure includes a bent limiting portion (51), a first inserting end and a second inserting end in the extending direction; The first inserting end and the second inserting end extend into the first clamping groove (312) and extend along the first clamping groove (312) in opposite directions.

8. The charging socket for a vehicle according to claim 7, characterized in that , the bent limiting portion (51) includes a first bending section and a second bending section, and the bending directions of the first bending section and the second bending section are opposite; Partial areas of the first bending section and the second bending section away from the first clamping groove (312) correspond to the screw at the same time.

9. The charging socket for a vehicle according to claim 7, characterized in that , the S-shaped structure is formed by bending a spring wire; The first clamping groove (312) is an annular groove, and the dimension of the first clamping groove (312) in the axial direction is larger than the diameter of the spring wire.

10. The charging socket for a vehicle according to claim 7, characterized in that , the bent limiting portion (51) is located in the middle of the S-shaped structure; The head of the screw has a driving groove, and the driving groove is in the same direction as the connecting hole (211) and is opposite to a part of the bent limiting portion (51).

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