Folding plug

Abstract

The utility model relates to a folding plug, which comprises a base, a grounding pin of which one end is rotatably connected to the base, and two power supply pins of which one ends are rotatably connected to the base and which are symmetrically arranged on two sides of the grounding pin, and the other ends of the grounding pin and the power supply pins extend out of the base. The grounding pin and the power supply pin are in transmission connection through a linkage mechanism to realize synchronous unfolding / folding, the two elastic sheets are symmetrically arranged, each elastic sheet comprises a fixed end and a movable end, the fixed ends are fixedly arranged on the base, the movable ends abut against the upper end of the power supply pin, and an automatic folding and unfolding structure is arranged between the movable ends and the power supply pin. The base comprises a bottom surface, and after any one of the grounding pin and the power supply pin is driven to be unfolded / folded to a set angle relative to the bottom surface, the grounding pin and the power supply pin are automatically and synchronously unfolded / folded. And when the user operates to a set angle, the automatic folding and unfolding structure can automatically help the user to complete the storage action, so that the storage process is easier.

Description

Technical Field

[0001] The utility model relates to the technical field of electric plugs, in particular to a foldable plug. Background Art

[0002] The pins of the foldable plug structure are foldably mounted on the shell of the plug structure. The pins are unfolded during charging, and after charging is completed, the pins are folded into the shell, which is convenient for protection and storage of the plug structure.

[0003] Existing folding plugs have numerous internal parts, which increases the size of the plug structure and makes it bulky, making it difficult to use and carry. Furthermore, since the pins all unfold or fold in the same direction, they must be pressed or lifted one by one in the same direction, which is laborious and provides a poor user experience.

[0004] Therefore, how to overcome the above-mentioned defects has become an important issue to be solved urgently by those skilled in the art. Utility Model Content

[0005] The utility model overcomes the shortcomings of the above-mentioned technology and provides a foldable plug that is convenient to fold and store.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A foldable plug comprises a base, a grounding pin rotatably connected to the base at one end, and two power pins symmetrically arranged on either side of the grounding pin at one end rotatably connected to the base, wherein the other ends of the grounding pin and the power pin extend out of the base, and the grounding pin and the power pin are connected by a linkage mechanism to achieve synchronous expansion / folding. The plug also comprises two symmetrically arranged spring pieces, each of which comprises a fixed end and a movable end, wherein the fixed end is fixedly arranged on the base, and the movable end abuts against the upper end of the power pin, and an automatic folding and unfolding structure is provided between the movable end and the power pin. The base comprises a bottom surface, and after any one of the grounding pin and the power pin is driven to expand / fold to a set angle relative to the bottom surface, the grounding pin and the power pin automatically and synchronously expand / fold.

[0008] Furthermore, the end of the grounding pin rotatably connected to the base is provided with a first rotating shaft and a second rotating shaft, and the end of the power pin rotatably connected to the base is provided with a third rotating shaft and a fourth rotating shaft, the first rotating shaft and the third rotating shaft are rotatably connected to the base, and a first avoidance groove and a second avoidance groove located on the left side of the first avoidance groove are provided on the right side of the base, the grounding pin is arranged in the first avoidance groove and is mounted above the first avoidance groove through the first rotating shaft, and the power pin is arranged in the second avoidance groove and is mounted above the second avoidance groove through the third rotating shaft.

[0009] Furthermore, the linkage mechanism includes a connecting rod connected between the ground pin and the power pin, one end of the connecting rod is connected to the second rotating shaft, and the other end is connected to the fourth rotating shaft, and the unfolding / folding directions of the ground pin and the power pin are opposite.

[0010] Furthermore, the automatic folding and unfolding structure includes a bending portion formed on the movable end and a first power connection end provided on the power pin and always kept in contact with the movable end. When any one of the grounding pin and the power pin is driven to unfold / fold to a set angle relative to the base until the first power connection end is snapped into / out of the bending portion, the grounding pin and the power pin are automatically and synchronously unfolded / folded.

[0011] Furthermore, when any one of the ground pin and the power pin is driven to unfold relative to the bottom surface, the first power connection end is clamped into the bent portion, and the set angle range is 60°-80°.

[0012] Furthermore, when any one of the ground pin and the power pin is driven to fold relative to the bottom surface, the first power terminal is locked out of the bent portion, and the set angle range is 20°-40°.

[0013] Furthermore, it also includes a cover body that is fixedly covered on the base and presses the fixed end of the spring sheet, the base is provided with a plurality of connecting rods, and the cover body is correspondingly provided with a plurality of through holes for inserting the connecting rods, the cover body is provided with a third avoidance groove, and a fourth avoidance groove located on the right side of the third avoidance groove and connected with the third avoidance groove, the fixed end includes a second power connection end extending to the right and exposed outside the base and the cover, the grounding pin includes a third power connection end located on the same side as the second power connection end, and when the grounding pin is unfolded, the third power connection end is placed in the fourth avoidance groove and exposed outside the base and the cover.

[0014] Furthermore, the grounding pin and the power pin have opposite folding directions, and are parallel to the bottom surface when fully folded, and perpendicular to the bottom surface when fully unfolded.

[0015] Furthermore, a first receiving slot for receiving a grounding pin and a second receiving slot for receiving a power pin are provided on the bottom surface of the base. When the grounding pin is fully folded, its left side extends out of the first receiving slot.

[0016] Furthermore, it also includes a circuit board installed on the upper end of the cover body, and a shell that is fixed to the base to cover the circuit board, the cover body, and the upper end of the base. The shell is provided with a mounting hole, and a USB interface is installed in the mounting hole. The shell is also provided with a fifth avoidance groove that exposes the grounding pin from the shell, and the shell is provided with a gripping portion.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention provides a foldable plug that utilizes a linkage mechanism to connect the grounding and power pins, allowing them to unfold and fold synchronously. This linkage ensures the simultaneous unfolding and folding of all three pins, allowing users to unfold or retract all pins with a single hand. This simplifies the operation process and improves user convenience. This eliminates the need to individually manipulate each pin in traditional designs, reducing the number of steps required. This design includes two symmetrically arranged springs, each with a fixed end and a movable end. The fixed end is fixed to the base, while the movable end abuts the upper end of the power pin. An automatic folding and unfolding mechanism is located between the movable end and the power pin. This automatic folding and unfolding mechanism automatically unfolds or retracts all pins when the power and ground pins are folded or unfolded synchronously to a certain angle, making it more convenient for users and enhancing the user experience. This automatic folding and unfolding mechanism reduces the number of times users have to manually manipulate the pins, thereby reducing wear on mechanical components and extending the life of the plug. When the user needs to unfold / fold the pins, no extra force is required. When the user operates to the set angle, the automatic folding and unfolding structure will automatically help the user complete the storage action, making the storage process easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of the overall structure of the plug in this case when it is in a folded state.

[0020] Figure 2 It is a structural diagram of the shrapnel in this case.

[0021] Figure 3 This is an exploded diagram of the base and the components installed on the base.

[0022] Figure 4 This is a schematic diagram of the assembled state of the base and upper cover when the plug is folded.

[0023] Figure 5 This is a three-dimensional diagram of the overall structure of the plug in this case when it is unfolded. DETAILED DESCRIPTION

[0024] The following examples further illustrate the features of the present invention and other related features to facilitate understanding by those skilled in the art:

[0025] Figure 1 This is an exploded view of the overall structure of the foldable plug in this case in the folded state. For the description of the position relationship of the components in this case, such as front, back, up, down, left, and right, please refer to Figure 1 Directions shown in .

[0026] like Figures 1 to 5As shown, this invention discloses a foldable plug comprising a base 1. In specific implementations, the base 1 can be square or round in shape. In this invention, when the base 1 is square, the edges of the base 1 are preferably slightly rounded to enhance hand comfort. This design incorporates rounded corners on a square shape, resulting in a softer overall appearance while also reducing the potential risk of injury from sharp edges. This foldable plug also includes a grounding pin 2 pivotally connected to the base 1 at one end, and two power pins 3 pivotally connected to the base 1 at one end and symmetrically positioned on either side of the grounding pin 2. The other ends of the grounding pin 2 and the power pins 3 extend outside the base 1. The grounding pins 2 and the power pins 3 are connected by a linkage mechanism for synchronous unfolding and folding. It should be noted that the two power pins 3 have the same structure and size, a common design in the art. Subsequent descriptions of the two power pins 3 will be made accordingly, and no distinction will be made between them. In specific implementations, the grounding pin 2 enhances electrical safety, while the power pins 3 are used to connect to an external power source to power the plug. The setting of the linkage structure ensures the accurate position of the ground pin 2 and the power pin 3 in the unfolded and stored states, and improves the reliability of the plug. When the user needs to unfold / fold the plug, there is no need to use a lot of force. The linkage structure will automatically help the ground pin 2 and the power pin 3 to complete the storage action synchronously, making the storage process easier. It also includes two symmetrically arranged springs 4, and the springs 4 include a fixed end 41 and a movable end 42. In specific implementation, the springs 4 are made of one-piece molding to save production costs. The material of the spring 4 is preferably phosphor bronze with good electrical conductivity, elasticity and fatigue resistance. The fixed end 41 of the spring 4 is fixedly set on the base 1. In specific implementation, the two can be fixed by bolts or by plug-in press-fit fixation. The movable end 42 of the spring 4 abuts against the upper end of the power pin 3 to achieve electrical connection between the two. An automatic folding and unfolding structure is provided between the movable end 42 and the power pin 3. The base 1 includes a bottom surface 11. When either the ground pin 2 or the power pin 3 is driven to unfold or fold relative to the bottom surface 11 to a set angle, the ground pin 2 and the power pin 3 automatically and synchronously unfold or fold. It should be noted that the bottom surface 11 is also the bottom side wall of the base 1. The set angle refers to the angle formed by the ground pin 2 and the power pin 3 relative to the bottom surface 11 when the ground pin 2 and the power pin 3 are simultaneously unfolded or folded. The provision of an automatic unfolding structure improves ease of use, the stability and reliability of the foldable plug when unfolding or folding, and the user experience. The overall operation is simple, the stability is good, and the unfolding and folding are convenient. The linkage design between the ground pin 2 and the power pin 3 is achieved through the spring clip 2 and the linkage mechanism, which reduces the number of individual components, simplifies the production and assembly process, and reduces production costs.

[0027] like Figure 1-3As shown, the end of the grounding pin 2 that is rotatably connected to the base 1 is provided with a first rotating shaft 21 and a second rotating shaft 22, and the end of the power pin 3 that is rotatably connected to the base 1 is provided with a third rotating shaft 31 and a fourth rotating shaft 32. In specific implementations, the grounding pin 2 is rotatably connected to the base 1 via the first rotating shaft 21, and the power pin 3 is rotatably connected to the base 1 via the third rotating shaft 31. This simplifies the connection structure between the grounding pin 2 and the power pin 3 and the base 1, making the deployment and storage of the grounding pin 2 and the power pin 3 smoother and more stable. A first avoidance groove 12 and a second avoidance groove 13 located to the left of the first avoidance groove 12 are defined on the right side of the base 1. The grounding pin 2 is disposed within the first avoidance groove 12 and is mounted above the first avoidance groove 12 via the first rotating shaft 21. The power pin 3 is disposed within the second avoidance groove 13 and is mounted above the second avoidance groove 13 via the third rotating shaft 31. By providing first relief groove 12, the portion of grounding pin 2 located within base 1 is relieved during rotation, preventing interference with base 1 during the unfolding and folding of grounding pin 2. This also serves as a guide and limiter, effectively ensuring smooth and stable unfolding and folding of grounding pin 2. The effects of second relief groove 12 are similar to those of first relief groove 13 and will not be further elaborated here.

[0028] like Figure 1 、 Figure 2 As shown, specifically, the linkage mechanism of this embodiment includes a connecting rod 5 connected between the grounding pin 2 and the power pin 3. One end of the connecting rod 5 is connected to the second rotating shaft 22, and the other end is connected to the fourth rotating shaft 32, thereby realizing the linkage between the grounding pin 2 and the power pin 3, allowing them to be deployed / folded synchronously, and the deployment / folding directions of the grounding pin 2 and the power pin 3 are opposite. Through the connection of the connecting rod 5, when the user operates one pin, all pins can be deployed or retracted synchronously, simplifying the operation process and improving ease of use. The linkage design between the connecting rod 5 and the grounding pin 2 and the power pin 3 ensures the stability of the pins during deployment and retraction, reducing the risk of failure due to structural instability.

[0029] like Figure 1-3As shown, specifically, the automatic folding and unfolding structure of this embodiment includes a bend 423 formed on the movable end 42 and a first power connection end 33 provided on the power pin 3, which always remains in contact with the movable end 42. In specific implementation, the bend 423 is integrally formed on the spring. When either the ground pin 2 or the power pin 3 is driven to unfold / fold to a set angle relative to the base 1 until the first power connection end 33 engages / disengages the bend 423, the ground pin 2 and the power pin 3 automatically unfold / fold simultaneously. When either the ground pin 2 or the power pin 3 is driven until the first power connection end 33 engages the bend 423, the ground pin 2 and the power pin 3 automatically fold. When the first power connection end 33 engages the bend 423, the ground pin 2 and the power pin 3 automatically unfold. The interlocking design of the bend 423 and the first power connection end 33 ensures the stability of the ground pin 2 and the power pin 3 when unfolded, reduces the risk of accidental folding or swinging of the pins during use, and improves user safety. This automatic folding and unfolding structure, through the coordinated design of the bend 423 and the first power connection 33, achieves automatic and synchronous unfolding and folding of the grounding pin 2 and the power pin 3. This not only simplifies the operation process and improves ease of use, but also enhances the stability and safety of the plug. The elastic force of the spring 4, combined with the automatic snap-in / snap-out design at a set angle, reduces interference between the grounding pin 2 and the power pin 3, ensuring smooth unfolding and folding of the grounding pin 2 and the power pin 3, thereby improving the overall performance and user experience of the product. Furthermore, the flexibility of the angle setting allows users to adjust according to actual needs, enhancing design flexibility.

[0030] Specifically, when driving either the ground pin 2 or the power pin 3 to unfold relative to the bottom surface 11, the first power terminal 33 snaps into the bent portion 423. At this time, the set angle range is 60°-80°. It should be noted that the set angle at this time is the angle formed by either the ground pin 2 or the power pin 3 and the bottom surface 11 when the user performs the unfolding operation. In specific implementation, the preferred setting angle in this case is 75°. It should be noted that when the user selects a different setting angle, the curvature of the bent portion 423 must be set accordingly to achieve the corresponding effect.

[0031] Specifically, when either the ground pin 2 or the power pin 3 is folded relative to the bottom surface 11, the first power connection end 33 engages the bent portion 423. At this time, the set angle range is 20°-40°. It should be noted that the set angle at this time is the angle formed between either the ground pin 2 or the power pin 3 and the bottom surface 11 when the user performs the folding operation.

[0032] Further, if Figure 1-Figure 5As shown, the foldable plug in this case also includes a cover body 6 that is fixedly covered on the base 1 and presses the fixed end 41 of the spring 4. The base 1 is provided with a plurality of connecting rods 14, and the cover body 6 is correspondingly provided with a plurality of through holes 61 for inserting the connecting rods 14. In specific implementation, to facilitate installation, the cover body 6 is provided with a plurality of escape positions that cooperate with the base 1. The connecting rods 14 on the base 1 are inserted into the through holes 61 on the cover body 6 in a one-to-one correspondence, thereby achieving a fixed connection between the two. In specific implementation, after the cover body 6 and the base 1 are covered, the two connecting rods 14 extending through the middle of the cover body 6 are hot-melt-sealed and then sealed to ensure a stable connection between the two and effectively protect the internal structure. The cover body 6 is provided with a third escape groove 62 and a fourth escape groove 63 located to the right of the third escape groove 62 and extending through the third escape groove 62. By providing the third and fourth clearance slots 62 and 63, the portion of the grounding pin 2 located on the cover 6 is cleared during rotation, preventing interference with the cover 6 during the unfolding and folding of the grounding pin 2. This serves as a guide and limiter, effectively ensuring the stability and accuracy of the grounding pin 2 during unfolding and folding. The fixed end 41 of the spring clip 4 includes a second electrical connection 411 that extends rightward and is exposed outside the base 1 and cover 6. It should be noted that the power pin 3 connects to the spring clip 4 via the first electrical connection 33 and then extends outward through the second electrical connection 411 of the fixed end 41, thereby achieving electrical connection to an external power source through the spring clip 4. The grounding pin 2 includes a third electrical connection 23 located on the same side as the second electrical connection 411. When the grounding pin 2 is unfolded, the third electrical connection 23 is positioned within the fourth clearance slot 63 and exposed outside the base 1 and cover 6, facilitating electrical connection to an external power source via a wire. When the cover 6 and base 1 are closed, the second power terminal 411 and the third power terminal 2 are exposed on the same side of the cover 6. This simplifies the wiring process, improves wiring convenience, and facilitates connection to an external power source. The simple and reasonable structural design effectively avoids the risk of electric shock. Furthermore, the second power terminal 411 and the third power terminal 2 are exposed on the same side of the base 1 and the cover 6. Connecting to electronic products can be achieved by directly welding wires, eliminating the need for reconnecting with detachable wires. This allows for external connection to similar electronic products, thus improving practicality.

[0033] Specifically, the grounding pin 2 and the power pin 3 fold in opposite directions. When fully folded, the grounding pin 2 and the power pin 3 are parallel to the bottom surface 11, and when fully extended, they are perpendicular to the bottom surface 11. Because the grounding pin 2 and the power pin 3 fold in opposite directions, this reduces interference between the pins during the extension or folding process, ensuring that each pin can be smoothly extended and retracted. When fully folded, the grounding pin 2 and the power pin 3 are parallel to the bottom surface 11, making the folding more complete. The folded overall volume is smaller and more convenient to carry. When fully extended, the grounding pin 2 and the power pin 3 are perpendicular to the bottom surface 11, making it easier to use and plug into an external socket.

[0034] like Figure 5 As shown, the bottom surface 11 of the base 1 further comprises a first receiving slot 15 for accommodating the grounding pin 2 and a second receiving slot 16 for accommodating the power pin 3. When the grounding pin 2 is fully folded, its left side protrudes and is exposed outside the first receiving slot 15. The provision of the first and second receiving slots 15, 16 maximizes space utilization when the pins are fully folded, reducing the size of the foldable socket and facilitating portability and transportation. When the grounding pin 2 and the power pin 3 are fully folded, they are stored within the base 1, preventing them from being exposed, reducing the risk of electric shock and improving user safety. This foldable storage design reduces the chance of contact between the grounding pin 2 and the power pin 3 and external objects, thereby reducing wear and extending the life of the plug. When the grounding pin 2 is fully folded, the protruding left side allows for easy grasping and manipulation by the user, improving operational convenience. When the grounding pin 2 is folded, the third power terminal 23 is concealed within the base and located in the first receiving slot 15.

[0035] like Figure 1-Figure 5 As shown, the foldable plug in this embodiment also includes a circuit board 7 mounted on the upper end of the cover 6. The circuit board 7 integrates essential electronic components, such as power conversion circuitry and signal transmission circuitry, to realize the plug's functionality. It also includes a housing 8 that snaps onto the base 1 to cover the circuit board 7, the cover 6, and the upper end of the base 1. The housing 8 snaps onto the base 1, ensuring a stable connection between the two. The housing 8 protects the internal structure from external environmental influences, enhancing the durability and safety of the plug. The housing 8 includes a mounting hole 81, into which a USB port 9 is mounted. This enhances the versatility and practicality of the plug. The housing 8 also includes a fifth relief slot 82, which allows the grounding pin 2 to be exposed outside the housing 8. This fifth relief slot 82 is designed to allow the grounding pin 2 to fold outward. Furthermore, when the grounding pin 2 is fully folded, the user can easily grasp and manipulate the protruding portion on the left side of the grounding pin 2, improving ease of operation. The housing 8 also includes a grip 83 to facilitate user handling of the foldable plug in this embodiment. During specific implementation, the USB interface is electrically connected to the circuit board 7 , and the ground pin 2 is electrically connected to the circuit board 7 .

[0036] As mentioned above, this case protects a foldable plug, and all technical solutions that are the same or similar to this case should be deemed to fall within the scope of protection of this case.

Claims

1. A foldable plug, comprising a base (1), a grounding pin (2) rotatably connected to the base (1), and two power pins (3) rotatably connected to the base (1) and symmetrically arranged on both sides of the grounding pin (2), wherein the other ends of the grounding pin (2) and the power pin (3) extend out of the base (1), characterized in that: The grounding pin (2) and the power pin (3) are connected by a linkage mechanism to achieve synchronous expansion / folding, and further comprise two symmetrically arranged spring pieces (4), wherein the spring pieces (4) comprise a fixed end (41) and a movable end (42), wherein the fixed end (41) is fixedly arranged on the base (1), and the movable end (42) abuts against the upper end of the power pin (3), and an automatic folding and expanding structure is provided between the movable end (42) and the power pin (3). The base (1) comprises a bottom surface (11), and after any one of the grounding pin (2) and the power pin (3) is driven to expand / fold to a set angle relative to the bottom surface (11), the grounding pin (2) and the power pin (3) are automatically and synchronously expanded / folded.

2. A foldable plug according to claim 1, characterized in that: The end of the grounding pin (2) rotatably connected to the base (1) is provided with a first rotating shaft (21) and a second rotating shaft (22); the end of the power pin (3) rotatably connected to the base (1) is provided with a third rotating shaft (31) and a fourth rotating shaft (32); the first rotating shaft (21) and the third rotating shaft (31) are rotatably connected to the base (1); a first avoidance groove (12) and a second avoidance groove (13) located on the left side of the first avoidance groove (12) are provided on the right side of the base (1); the grounding pin (2) is arranged in the first avoidance groove (12) and is mounted above the first avoidance groove (12) through the first rotating shaft (21); the power pin (3) is arranged in the second avoidance groove (13) and is mounted above the second avoidance groove (13) through the third rotating shaft (31).

3. The foldable plug according to claim 2, characterized in that: The linkage mechanism comprises a connecting rod (5) connected between the grounding pin (2) and the power pin (3), one end of the connecting rod (5) is connected to the second rotating shaft (22), and the other end is connected to the fourth rotating shaft (32), and the unfolding / folding directions of the grounding pin (2) and the power pin (3) are opposite.

4. The foldable plug according to claim 1, characterized in that: The automatic folding and unfolding structure comprises a bending portion (423) formed on the movable end (42), and a first power connection end (33) provided on the power pin (3) and always kept in contact with the movable end (42). When any one of the grounding pin (2) and the power pin (3) is driven to unfold / fold to a set angle relative to the base (1) until the first power connection end (33) is engaged in / out of the bending portion (423), the grounding pin (2) and the power pin (3) are automatically and synchronously unfolded / folded.

5. The foldable plug according to claim 4, characterized in that: When any one of the grounding pin (2) and the power pin (3) is driven to unfold relative to the bottom surface (11), the first power connection end (33) is clamped into the bent portion (423), and the set angle range is 60°-80°.

6. The foldable plug according to claim 4, characterized in that: When any one of the ground pin (2) and the power pin (3) is driven to fold relative to the bottom surface (11), the first power connection end (33) is snapped out of the bent portion (423), and the set angle range is 20°-40°.

7. A foldable plug according to any one of claims 1 to 6, characterized in that: The invention also includes a cover body (6) fixedly covered on the base (1) and pressing the fixed end (41) of the spring sheet (4); the base (1) is provided with a plurality of connecting rods (14); the cover body (6) is correspondingly provided with a plurality of through holes (61) for inserting the connecting rods (14); the cover body (6) is provided with a third avoidance groove (62); and a fourth avoidance groove (63) located on the right side of the third avoidance groove (62) and connected with the third avoidance groove (62); the fixed end (41) includes a second power connection end (411) extending to the right and exposed outside the base (1) and the cover body (6); the grounding pin (2) includes a third power connection end (23) located on the same side as the second power connection end (411); when the grounding pin (2) is unfolded, the third power connection end (23) is placed in the fourth avoidance groove (63) and exposed outside the base (1) and the cover body (6).

8. The foldable plug according to claim 7, characterized in that: The grounding pin (2) and the power pin (3) are folded in opposite directions, and the grounding pin (2) and the power pin (3) are parallel to the bottom surface (11) when they are fully folded, and perpendicular to the bottom surface (11) when they are fully unfolded.

9. The foldable plug according to claim 8, characterized in that: A first receiving slot (15) for receiving a grounding pin (2) and a second receiving slot (16) for receiving a power pin (3) are provided on the bottom surface (11) of the base (1); when the grounding pin (2) is fully folded, its left side extends out of the first receiving slot (15).

10. The foldable plug according to claim 9, characterized in that: The device further comprises a circuit board (7) mounted on the upper end of the cover body (6), and a housing (8) fixedly connected to the base (1) to cover the circuit board (7), the cover body (6), and the upper end of the base (1); the housing (8) is provided with a mounting hole (81), a USB interface (9) is mounted in the mounting hole (81), the housing (8) is further provided with a fifth avoidance groove (82) for exposing the grounding pin (2) outside the housing (8), and the housing (8) is provided with a gripping portion (83).

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