An adapter, a charging gun assembly and a charging device

Abstract

This invention belongs to the field of charging adapter technology, and specifically relates to an adapter, a charging gun assembly, and a charging device. An adapter includes a main housing, a locking arm, a spring, and a first reset member. The main housing includes a first charging connector and a second charging connector. One end of the locking arm is provided with a hook, and the other end of the locking arm is provided with a button. The locking arm is rotatably connected to the main housing. The spring can move between a locked position and an unlocked position within a groove in the main housing. The spring is located between the bottom of the button and the main housing, and a clearance space is formed between the spring and the side wall of the groove. In the unlocked position, the clearance space faces the button, allowing the button to move into the clearance space. In the unlocked position, the second charging connector is inserted into the charging socket, and the end of the spring extending out of the groove abuts against the charging socket and retracts towards the inside of the main housing to the locked position, preventing the button from moving. This design prevents the charging gun from being pulled out during charging, thus avoiding arcing damage to the charging socket and preventing the adapter from being stolen.

Description

Technical Field

[0001] This invention belongs to the field of charging adapter technology, and in particular relates to an adapter, a charging gun assembly, and a charging device. Background Technology

[0002] Currently, there are multiple standards for charging interfaces for new energy vehicles. New energy vehicles with different standard interfaces and charging docks can achieve compatible charging functionality through adapters. Specifically, the charging gun is inserted into one end of the adapter, and the other end of the adapter is inserted into the charging port on the charging dock. The electronic lock on the charging dock then locks the adapter in place.

[0003] The existing adapter has a locking structure and a button. The button has a guide post below it. When the charging gun is inserted into the adapter, the locking structure locks the adapter and the charging gun together, and the guide post of the button cannot be pressed to unlock it.

[0004] Therefore, the aforementioned adapter can unlock the charging gun first and then unlock the adapter. However, it cannot prevent the charging gun from being pulled out while the adapter is charging, which could cause arcing and damage to the charging base. It also cannot prevent the adapter from being stolen. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that existing adapters cannot prevent the charging gun from being pulled out while the adapter is charged, which would cause arcing and damage to the charging base, and cannot prevent the adapter from being stolen. The present invention provides an adapter, a charging gun assembly, and a charging device.

[0006] To solve the above-mentioned technical problems, on the one hand, the present invention provides an adapter, including a main housing, a locking arm, a spring piece and a first reset member, wherein the main housing includes a first charging connector and a second charging connector disposed opposite to each other along a first direction;

[0007] The locking arm is provided with a hook at one end along the first direction, and a button at the other end along the first direction. The middle part of the locking arm is rotatably connected to the main housing around the first rotation axis. The hook is adapted to engage with the locking groove on the charging gun when the charging gun is inserted into the first charging connector.

[0008] The main housing is provided with a sliding groove, and the spring piece can move between the locking position and the unlocking position in the first direction within the sliding groove. The spring piece is located between the bottom of the button part and the main housing. The spring piece and the side wall of the sliding groove form an opening facing the button part to avoid the space. The first reset member is disposed between the main housing and the spring piece.

[0009] In the unlocked position, the clearance space is directly opposite the button, and the button can move into the clearance space in the pressing direction to disengage the latch; in the unlocked position, the second charging connector is adapted to be inserted into the charging socket of the charging device, and the end of the spring extending out of the slide groove abuts against the charging socket and retracts to the inside of the main housing to the locking position against the elastic force of the first reset member, the clearance space contracts, and the spring prevents the button from moving in the pressing direction.

[0010] Optionally, the slide groove is provided with a flared opening on the side near the second charging connector, and the width of the flared opening in the second direction gradually increases along the direction near the first charging connector; wherein, the first direction is perpendicular to the second direction;

[0011] The spring has a gradient portion, the size of which gradually increases in the second direction along the direction of the spring closer to the first charging connector. The flare is used to guide the gradient portion to move towards the inside of the main housing when the second charging connector is inserted into the charging socket.

[0012] Optionally, the first reset member is a spring, and the spring sheet further includes two guide posts extending along the first direction. The two guide posts are spaced apart along the second direction, and each guide post is fitted with the first reset member.

[0013] Optionally, the bottom wall of the slide is provided with two spring holes extending along the first direction, and the two spring holes correspond one-to-one with the two first reset members, with one end of the first reset member inserted into the corresponding spring hole.

[0014] Optionally, the spring sheet further includes a clearance portion, the side of the gradient portion near the first charging connector is connected to the clearance portion, the first reset member abuts between the clearance portion and the bottom wall of the slide groove, the clearance portion is provided with a clearance groove communicating with the slide groove, and the side wall of the clearance groove and the side wall of the slide groove together enclose the clearance space.

[0015] Optionally, the outer side wall of the main housing is provided with two surrounding plates that are spaced apart along the second direction. The surrounding plates include side plates and a top plate. The bottom side of the side plate is connected to the outer side wall of the main housing. The top plate is formed by bending and extending the top side of the side plate toward the center side of the main housing, so that the two surrounding plates enclose the groove. The top plate restricts the spring piece from disengaging from the groove.

[0016] Optionally, it also includes a second reset member, wherein the spring is provided with a through hole, one end of the second reset member abuts against the bottom surface of the button part, and the other end passes through the through hole and abuts against the main housing.

[0017] Optionally, the main housing is provided with a receiving groove for accommodating the locking arm, the receiving groove communicating with the slide groove on one side along the first direction, and the hook extending from the receiving groove on the other side along the first direction.

[0018] On the other hand, embodiments of the present invention provide a charging gun assembly, including a charging gun and the aforementioned adapter. A locking groove is provided on the side wall of the charging gun, and the hook can be engaged in the locking groove when the charging gun is inserted into the first charging connector.

[0019] On the other hand, embodiments of the present invention provide a charging device, including a charging base and the above-mentioned charging gun assembly, wherein an electronic lock is installed on the charging base, and the electronic lock can lock when the second charging connector is inserted into the charging port of the charging base.

[0020] In the charging device of the present invention, when the device needs to be charged, the charging gun is first inserted into the first charging connector of the adapter, and the hook is engaged in the locking groove. At this time, the spring is in the unlocked position, and the clearance space avoids the button part moving in the pressing direction. Then, the second charging connector of the adapter is inserted into the charging port of the charging base. During the insertion process, the end of the spring extending out of the slide groove overcomes the elastic force of the first reset member and retracts towards the inside of the main housing until the adapter is inserted into place. The electronic lock locks the adapter, the clearance space contracts, and the spring that moves to the bottom side of the button part prevents the button part from moving when pressed, thus preventing the hook from disengaging from the locking groove. This restricts the assembly and unlocking sequence of the charging gun, adapter and charging base, avoiding the situation where the charging gun is pulled out during the charging of the adapter, causing arcing damage to the charging base, and also preventing the adapter from being stolen. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a charging device provided in an embodiment of the present invention;

[0022] Figure 2 yes Figure 1 Exploded view;

[0023] Figure 3 yes Figure 1 Longitudinal cross-sectional view;

[0024] Figure 4 yes Figure 3 A schematic diagram of the charging gun assembly in the diagram;

[0025] Figure 5 yes Figure 3 A schematic diagram of the adapter structure in the diagram;

[0026] Figure 6 yes Figure 5 Exploded view;

[0027] Figure 7 yes Figure 5 Longitudinal cross-sectional view;

[0028] Figure 8 yes Figure 5 Side view;

[0029] Figure 9 yes Figure 5 A schematic diagram of the structure of the spring clip.

[0030] The reference numerals in the accompanying drawings are as follows:

[0031] 100. Adapter; 200. Charging gun; 201. Lock slot; 300. Charging base; 301. Charging port; 302. Electronic lock;

[0032] 1. Main housing; 11. First charging connector; 12. Second charging connector; 13. Slide groove; 14. Flared opening; 15. Receiving groove; 16. Enclosure plate; 17. Positioning ring groove; 18. Clearance space; 19. Spring hole; 2. Locking arm; 21. Hook; 22. Button part; 23. Rotary shaft hole; 3. Spring piece; 31. Gradient part; 32. Clearance part; 33. Guide post; 34. Clearance groove; 35. Through hole; 4. First reset component; 5. Second reset component; 6. Micro switch; 7. TYPE-C interface; 8. Rotary shaft screw; 9. Nut. Detailed Implementation

[0033] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0034] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a charging device, including a charging base 300 and a charging gun assembly. An electronic lock 302 is installed on the charging base 300. The charging gun assembly includes an adapter 100 and a charging gun 200. The charging gun 200 is provided with a locking groove 201. The adapter 100 includes a main housing 1, a locking arm 2, a spring 3 and a first reset member 4. The main housing 1 includes a first charging connector 11 and a second charging connector 12 arranged opposite to each other along a first direction. Figure 2 In this context, D1 represents the first direction.

[0035] like Figures 2 to 4As shown, a latch 21 is provided at one end of the locking arm 2 along the first direction. When the charging gun 200 is inserted into the first charging connector 11, the latch 21 engages with the locking groove 201 to lock the adapter 100 and the charging gun 200 together. A button part 22 is provided at the other end of the locking arm 2 along the first direction. The middle part of the locking arm 2 is rotatably connected to the main housing 1 around the first rotation axis.

[0036] like Figures 5 to 7 As shown, a slide groove 13 is provided on the main housing 1. The spring piece 3 can move between the locking position and the unlocking position in the first direction within the slide groove 13. The spring piece 3 is located between the bottom of the button part 22 and the main housing 1. The spring piece 3 and the side wall of the slide groove 13 form an opening facing the button part 22 to form a clearance space 18. The first reset member 4 is provided between the main housing 1 and the spring piece 3.

[0037] Figure 4 , Figure 5 and Figure 7 The spring on the adapter 100 shown is in the unlocked position. In the unlocked position, the clearance space 18 is directly opposite the button part 22. The button part 22 can move into the clearance space 18 in the pressing direction to disengage the latch 21. The pressing direction refers to the direction in which the button part 22 moves toward the central axis of the main housing 1.

[0038] In the unlocked position, the second charging connector 12 can be inserted into the charging port 301 of the charging dock 300, such as... Figure 3 As shown, one end of the spring piece 3 extending out of the slide groove 13 abuts against the charging base 300 and retracts to the inner side of the main housing 1 to the locking position, overcoming the elastic force of the first reset member 4. The clearance space 18 contracts, and the spring piece 3 can prevent the button part 22 from moving in the pressing direction. Figure 3 The spring clip of the adapter 100 shown is in the locking position.

[0039] Specifically, when electrical equipment needs charging, such as Figure 4 As shown, the charging gun 200 is first inserted into the first charging connector 11 of the adapter 100. During the insertion process, the hook 21 is lifted and latched, the locking arm 2 rotates around the first rotation axis, and the button part 22 moves in the pressing direction until the hook 21 slides into the locking groove 201. At this time, the spring 3 is in the unlocked position, and the clearance space 18 formed by the spring 3 and the side wall of the slide groove 13 avoids the button part 22 moving in the pressing direction.

[0040] Then, as Figure 2 and Figure 3As shown, the second charging connector 12 of the adapter 100 is inserted into the charging port 301 of the charging base 300. During insertion, one end of the spring piece 3 extending from the slide groove 13 first contacts the end face of the charging base 300. As the adapter 100 continues to be inserted, it overcomes the elastic force of the first reset member 4 and retracts towards the inside of the main housing 1, causing the clearance space 18 to contract until the adapter 100 presses against the end face of the charging base 300. The spring piece 3 then moves to the bottom side of the button part 22 to prevent the button part 22 from rotating when pressed, which would cause the hook 21 to disengage from the locking groove 201. The electronic lock 302 locks, locking the adapter 100 onto the charging base 300, thus locking the charging gun 200, the adapter 100, and the charging base 300 together.

[0041] When it is necessary to unplug the charging gun 200, first unlock the electronic lock 302, then remove the adapter 100 from the charging base 300. The first reset member 4 returns to its original shape, and the spring piece 3 moves to the unlocked position on the outside of the main housing 1 under the elastic force of the first reset member 4. The clearance space 18 formed by the spring piece 3 and the side wall of the slide groove 13 returns to its initial size and is directly opposite the button part 22. Then press the button part 22, and the clearance space 18 moves in the pressing direction to avoid the button part 22. The locking arm 2 rotates around the first rotation axis, and the hook 21 disengages from the locking groove 201, thereby unlocking the adapter 100 and the charging gun 200, and unplugging the charging gun 200.

[0042] As can be seen from the above, the structure of the adapter 100 restricts the assembly and unlocking sequence of the charging gun 200, adapter 100, and charging base 300. During assembly, the charging gun 200 and adapter 100 are assembled first, and then the adapter 100 is inserted into the charging base 300. During unlocking, the adapter 100 is unlocked from the charging base 300 first, and then the charging gun 200 is unlocked from the adapter 100. This prevents the charging gun 200 from being pulled out while the adapter 100 is charging, which could cause arcing and damage to the charging base 300, and also prevents the adapter 100 from being stolen. Furthermore, the charging device has a foolproof function; users can only assemble and unlock the charging device in the above-described order.

[0043] In the charging device of the present invention, when the electrical device needs to be charged, the charging gun 200 is first inserted into the first charging connector 11 of the adapter 100, and the hook 21 is engaged in the locking groove 201. At this time, the spring piece 3 is in the unlocked position, and the clearance space 18 avoids the button part 22 moving in the pressing direction; then the second charging connector 12 of the adapter 100 is inserted into the charging port 301 of the charging base 300. During the insertion process, the end of the spring piece 3 extending out of the slide groove 13 overcomes the elastic force of the first reset member 4 and retracts towards the inside of the main housing 1 until the adapter is fully inserted. When the head 100 is inserted into place, the electronic lock 302 locks the adapter 100, the clearance space 18 retracts, and the spring piece 3 that moves to the bottom side of the button part 22 can prevent the button part 22 from moving when it is pressed, thus preventing the hook 21 from disengaging from the locking groove 201. This restricts the assembly and unlocking sequence of the charging gun 200, adapter 100 and charging base 300, preventing the charging gun 200 from being pulled out while the adapter 100 is charging, which would cause arcing and damage to the charging base 300. It can also prevent the adapter 100 from being stolen.

[0044] In one embodiment, such as Figure 4 As shown, the adapter 100 also includes a micro switch 6, and the charging gun 200 is provided with a discharge port, at which a TYPE-C interface 7 is installed. After the adapter 100 is inserted into the charging port 301, the micro switch 6 is triggered and outputs a signal, and the TYPE-C interface 7 starts discharging.

[0045] In one embodiment, such as Figure 5 and Figure 6 As shown, the slide groove 13 is provided with a flared opening 14 on the side near the second charging connector 12. The width of the flared opening 14 in the second direction gradually increases along the direction near the first charging connector 11; wherein, the first direction is perpendicular to the second direction. Figure 2 In this context, D2 represents the second direction.

[0046] like Figure 9 As shown, the spring 3 has a gradient portion 31. The size of the gradient portion 31 in the second direction gradually increases along the direction of the spring 3 near the first charging connector 11. The flare 14 is used to guide the gradient portion 31 to move towards the inside of the main housing 1 when the second charging connector 12 is inserted into the charging port 301 of the charging base 300.

[0047] In one embodiment, such as Figure 7 and Figure 9 As shown, the first reset member 4 is a spring, and the spring piece 3 also includes two guide posts 33 extending along the first direction. The two guide posts 33 are spaced apart along the second direction, and each guide post 33 is fitted with the first reset member 4.

[0048] When the first reset member 4 undergoes elastic deformation, the guide post 33 can guide the first reset member 4 to prevent it from tilting during movement, which would cause the spring piece 3 to tilt during movement. Moreover, the arrangement of two first reset members 4 can improve the balance of forces on the spring piece 3, thereby improving the smoothness of the spring piece 3 during movement.

[0049] In addition, the two guide posts 33, which are spaced apart along the second direction, can also avoid the button part 22 that moves in the pressing direction.

[0050] In other embodiments, the first reset member 4 may be a rubber component.

[0051] In one embodiment, such as Figure 8 As shown, the bottom wall of the slide 13 is provided with two spring holes 19 extending in the first direction. The two spring holes 19 correspond one-to-one with the two first reset members 4. One end of the first reset member 4 is inserted into the corresponding spring hole 19 so as to use the spring hole 19 to position the first reset member 4.

[0052] In one embodiment, such as Figure 9 As shown, the spring 3 also includes a relief part 32. The gradual part 31 is connected to the relief part 32 on the side near the first charging connector 11. The first reset member 4 abuts between the relief part 32 and the bottom wall of the slide 13. The relief part 32 is provided with a relief groove 34 that communicates with the slide 13. The side wall of the relief groove 34 and the side wall of the slide 13 together enclose the relief space 18.

[0053] like Figure 7 As shown, in the unlocked position, the clearance space 18 is directly opposite the button part 22, and the clearance groove 34 is located on the bottom side of the button part 22. Therefore, when the button part 22 is pressed to unlock the charging gun 200 and the adapter 100, the bottom wall of the clearance groove 34 can limit the movement of the button part 22 to prompt the user to press it in place.

[0054] In one embodiment, two surrounding plates 16 are provided on the outer side wall of the main housing 1, which are spaced apart along the second direction. The surrounding plates 16 include side plates and top plates. The bottom side of the side plates is connected to the outer side wall of the main housing 1. The top plate is formed by bending and extending the top side of the side plates toward the center side of the main housing 1, so that the two surrounding plates 16 enclose and form a sliding groove 13. The top plate restricts the spring piece 3 from disengaging from the sliding groove 13.

[0055] In one embodiment, such as Figure 6 and Figure 7 As shown, the adapter 100 also includes a second reset member 5. A through hole 35 is provided on the spring piece 3. One end of the second reset member 5 abuts against the bottom surface of the button part 22, and the other end passes through the through hole 35 and abuts against the main housing 1.

[0056] During the process of inserting the charging gun 200 into the first charging connector 11, the hook 21 first lifts outward, and the button part 22 rotates around the first rotation axis in the pressing direction. The button part 22 moving in the pressing direction compresses the second reset member 5 until the hook 21 slides into the locking groove 201. The second reset member 5 returns to its initial state, and the button part 22 automatically resets under the elastic force of the second reset member 5.

[0057] In one embodiment, the second reset member 5 is a spring.

[0058] In other embodiments, the second reset member 5 may be a rubber component.

[0059] In one embodiment, such as Figure 7 As shown, the main housing 1 has a positioning ring groove 17 on the bottom wall of the slide groove 13, and the other end of the spring is inserted into the positioning ring groove 17 to position the installation position of the spring.

[0060] In one embodiment, the bottom of the button part 22 is provided with a protrusion protruding towards the spring piece 3, and one end of the second reset member 5 is sleeved on the protrusion.

[0061] In one embodiment, such as Figure 6 As shown, the main housing 1 is provided with a receiving groove 15 for accommodating the locking arm 2. The receiving groove 15 is connected to the slide groove 13 on one side along the first direction, and the hook 21 extends out from the receiving groove 15 on the other side along the first direction.

[0062] In one embodiment, such as Figure 6 As shown, the adapter 100 also includes a pivot screw 8 and a nut 9. The pivot screw 8 includes a rod and a head connected to one end of the rod, and the other end of the rod is provided with external threads. The receiving groove 15 has a through hole in the second direction on its side wall, which is arranged opposite to the receiving groove 15. The locking arm 2 has a pivot hole 23 in the second direction in its middle. The rod of the pivot screw 8 passes through the through hole and the pivot hole 23, and the nut 9 is threaded to the other end of the rod to rotatably connect the locking arm 2 to the main housing 1. The second direction is the direction of the first rotation axis.

[0063] In one embodiment, the first charging connector 11 and the second charging connector 12 are separately disposed, and the first charging connector 11 and the second charging connector 12 are snapped together.

[0064] In one embodiment, such as Figure 7 As shown, the second charging connector 12 has a stop end face. The second charging connector 12 is inserted into the charging port 301 until the stop end face contacts the end face of the charging base 300. The end face of the spring piece 3 extending out of the slide groove 13 is located on the side of the stop end face away from the first charging connector 11. In the unlocked position, the distance between the end face of the spring piece 3 extending out of the slide groove 13 and the stop face along the first direction is 3.5mm.

[0065] In other embodiments, the avoidance part 32 can be omitted, and the first reset member 4 can abut between the gradient part 31 and the bottom wall of the groove 13.

[0066] In other embodiments, the aforementioned groove 13 can be made by directly slotting the outer side wall of the main housing 1.

[0067] In addition, one embodiment of the present invention provides a charging gun assembly, the structure of which is the same as that of the charging gun assembly in any of the above embodiments, and will not be described again here.

[0068] In addition, one embodiment of the present invention provides an adapter 100, the structure of which is the same as the connector of the adapter 100 in any of the above embodiments, and will not be described again here.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adapter, characterized in that, It includes a main housing (1), a locking arm (2), a spring (3) and a first reset member (4). The main housing (1) includes a first charging connector (11) and a second charging connector (12) arranged opposite to each other along a first direction. The locking arm (2) is provided with a hook (21) at one end along the first direction, and a button part (22) is provided at the other end along the first direction. The middle part of the locking arm (2) is rotatably connected to the main housing (1) around the first rotation axis. The hook (21) is adapted to be engaged in the locking groove (201) on the charging gun (200) when the charging gun (200) is inserted into the first charging connector (11). The main housing (1) is provided with a slide groove (13), and the spring piece (3) can move between the locking position and the unlocking position in the first direction within the slide groove (13). The spring piece (3) is located between the bottom of the button part (22) and the main housing (1). The spring piece (3) and the side wall of the slide groove (13) form a clearance space (18) with the opening facing the button part (22). The first reset member (4) is provided between the main housing (1) and the spring piece (3). In the unlocked position, the clearance space (18) is directly opposite the button part (22), and the button part (22) can move into the clearance space (18) in the pressing direction so that the hook (21) is disengaged; in the unlocked position, the second charging connector (12) is adapted to be inserted into the charging base (300) of the charging device, and one end of the spring piece (3) extending out of the slide groove (13) abuts against the charging base (300) and retracts to the inside of the main housing (1) to the locking position against the elastic force of the first reset member (4), the clearance space (18) contracts, and the spring piece (3) prevents the button part (22) from moving in the pressing direction; The second charging connector (12) is provided with a flared opening (14), and the spring (3) has a tapered portion (31). The flared opening (14) is used to guide the tapered portion (31) to move towards the inside of the main housing (1) when the second charging connector (12) is inserted into the charging socket (300). The spring (3) also includes a clearance part (32). The gradient part (31) is connected to the clearance part (32) on the side near the first charging connector (11). The first reset member (4) abuts between the clearance part (32) and the bottom wall of the slide (13). The clearance part (32) is provided with a clearance groove (34) communicating with the slide (13). The side wall of the clearance groove (34) and the side wall of the slide (13) together enclose the clearance space (18). The adapter (100) also includes a micro switch (6), and the charging gun (200) is provided with a discharge port, and a TYPE-C interface (7) is installed at the discharge port; after the adapter (100) is inserted into the charging socket (300), the micro switch (6) is triggered and outputs a signal, and the TYPE-C interface (7) starts discharging.

2. The adapter according to claim 1, characterized in that, The flare (14) gradually increases in width in the second direction along the direction close to the first charging connector (11); wherein the first direction is perpendicular to the second direction.

3. The adapter according to claim 2, characterized in that, The first reset member (4) is a spring, and the spring piece (3) also includes two guide posts (33) extending along the first direction. The two guide posts (33) are spaced apart along the second direction, and each guide post (33) is fitted with the first reset member (4).

4. The adapter according to claim 3, characterized in that, The bottom wall of the slide (13) is provided with two spring holes (19) extending along the first direction. The two spring holes (19) correspond one-to-one with the two first reset members (4). One end of the first reset member (4) is inserted into the corresponding spring hole (19).

5. The adapter according to claim 1, characterized in that, Two surrounding plates (16) are provided on the outer side wall of the main housing (1) and spaced apart along the second direction. The surrounding plates (16) include side plates and top plates. The bottom side of the side plates is connected to the outer side wall of the main housing (1). The top plate is formed by bending and extending the top side of the side plates toward the center side of the main housing (1) so that the two surrounding plates (16) enclose and form the sliding groove (13). The top plate restricts the spring piece (3) from disengaging from the sliding groove (13).

6. The adapter according to any one of claims 1 to 5, characterized in that, It also includes a second reset member (5), on which a through hole (35) is provided. One end of the second reset member (5) abuts against the bottom surface of the button part (22), and the other end passes through the through hole (35) and abuts against the main housing (1).

7. The adapter according to any one of claims 1 to 5, characterized in that, The main housing (1) is provided with a receiving groove (15) for accommodating the locking arm (2). The receiving groove (15) is connected to the slide groove (13) on one side along the first direction, and the hook (21) extends out from the receiving groove (15) on the other side along the first direction.

8. A charging gun assembly, characterized in that, Includes a charging gun (200) and an adapter (100) according to any one of claims 1 to 7, wherein a locking groove (201) is provided on the side wall of the charging gun (200), and the hook (21) is able to be locked in the locking groove (201) when the charging gun (200) is inserted into the first charging connector (11).

9. A charging device, characterized in that, The device includes a charging dock (300) and a charging gun assembly as described in claim 8, wherein the charging dock (300) is equipped with an electronic lock (302) that is capable of locking when the second charging connector (12) is inserted into the charging port (301) of the charging dock (300).

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