Electricity connection metal sheet and multi-standard changeover plug

Abstract

The utility model discloses a power connection metal sheet and a multi-standard change-over plug, the power connection metal sheet comprises a metal sheet body, two opposite sides of the metal sheet body are bent towards the same direction perpendicular to the metal sheet body to form two bending parts, and the two bending parts are provided with free ends along the first end direction of the metal sheet body. The free ends of the two bending parts are oppositely bent and extend to form a clamping piece structure, the clamping piece structure is provided with an insertion port for insertion of an insertion rod of an external electric appliance plug, the second end of the metal sheet body is bent to form a limiting part, a notch is formed in the limiting part, and an end opening of the clamping piece structure extends into the notch. According to the utility model, the electric connection metal sheet can limit the opening amplitude of the end opening of the clamping piece structure through the gap, so as to relieve the situation that the clamping piece structure loses elasticity and deforms because the opening amplitude of the end opening of the clamping piece structure is too large after the insertion rod is inserted into the insertion port; and the clamping piece structure can be stably contacted with the insertion rod after the insertion rod is inserted into the insertion port, so that the safety and the stability are improved.

Description

Technical Field

[0001] This utility model relates to the field of socket technology, and in particular to a power-connecting metal plate and a multi-standard adapter plug. Background Technology

[0002] The contact metal plate is an essential component of a socket, and every national standard socket requires it. This plate connects to the live or neutral wire and has a socket for connecting an external appliance to its plug, thus providing power. However, after a period of use, the socket's contact metal plate can become stretched, losing its elasticity and leading to poor contact. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a connecting metal plate and a multi-standard adapter plug. It can accommodate German standard sockets and effectively reduce the overall size of the adapter plug, achieving a balance between functionality and portability.

[0004] According to a first aspect of this application, a power-connecting metal sheet is provided, comprising a metal sheet body, wherein two opposite sides of the metal sheet body are bent in the same direction perpendicular to the metal sheet body to form two bent portions, the two bent portions having free ends along a first end direction of the metal sheet body, the free ends of the two bent portions being bent towards each other to form a clip structure, the clip structure having a plug interface for inserting a plug of an external electrical appliance, the second end of the metal sheet body being bent to form a limiting portion, the limiting portion having a notch, and the end opening of the clip structure extending into the notch.

[0005] The electrical contact metal piece of this invention can limit the opening range of the end opening of the clamping structure through the notch, so as to alleviate the situation where the end opening of the clamping structure opens too wide after the plug is inserted into the plug interface, causing the clamping structure to lose its elasticity and deform. At the same time, by limiting the opening range of the end opening of the clamping structure through the notch, it can also ensure that the clamping structure can stably contact the plug after the plug is inserted into the plug interface, thereby improving safety and stability during use.

[0006] In some embodiments, the end of the connector is provided with an outwardly expanding beveled structure.

[0007] Therefore, this design allows for a smaller connector size, and the angled structure can expand the connector when the plug is inserted, resulting in more stable contact between the metal plate and the plug after insertion.

[0008] In some embodiments, the connector is provided with a 4mm socket and a 5mm socket, the 4mm socket and the 5mm socket are arranged side by side to form a flat figure-eight shape, and the 4mm socket is located on the side of the 5mm socket near the end opening of the clip structure.

[0009] Therefore, this design, combined with the angled structure, allows the 4mm socket to also be compatible with 4.8mm plugs, improving the applicability of the power socket. At the same time, since the 4mm socket is located on the side closer to the end opening of the clip structure, the force required to expand the 4mm socket is relatively smaller, improving the user experience.

[0010] According to a second aspect of this application, a multi-standard adapter is provided, including a housing, on which a first socket group and a second socket group are provided. Inside the housing, a first metal plate group corresponding to the first socket group and a second metal plate group corresponding to the second socket group are provided. Inside the housing, an inner support structure is also provided. The first metal plate group and the second metal plate group are both disposed on the inner support structure. The power-connecting metal plate in the first metal plate group and / or the second metal plate group is the power-connecting metal plate described in the first aspect above.

[0011] The multi-standard adapter of this utility model adopts the above-mentioned electrical contact metal piece, which can effectively improve the safety and stability of the adapter during use. At the same time, the structural design of the 4mm and 5mm sockets of the electrical contact metal piece can accommodate both Italian and German standard plugs, thus enabling the overall adapter to accommodate two different national standard plugs, making it more convenient to use.

[0012] In some embodiments, the first socket group includes a first power socket and a first ground socket.

[0013] The outer casing has a recessed slot, and the second socket group is disposed on the bottom surface of the slot. The second socket group includes a second power socket, a second ground socket, and a ground contact.

[0014] Thus, with this design, the first socket group can be used with two-phase plugs of German standard sockets, and the second socket group can be used with three-phase plugs of German standard sockets. At the same time, both the first and second socket groups are provided with corresponding grounding sockets. The power connection plug of Italian standard three-phase plugs can be inserted into the node socket of the first or second socket group. This allows the overall adapter to accommodate both Italian and German standard two-phase and three-phase plugs, and significantly reduces the size of the overall structure, making the overall adapter both functional and portable.

[0015] In some embodiments, the first metal sheet group and / or the second metal sheet group includes a connecting metal sheet for serving as a live wire or a neutral wire, the connecting metal sheet being provided with a clip structure, and the plug interface on the connecting metal sheet for insertion with a plug rod being provided on the side opening of the clip structure.

[0016] Therefore, this design allows for better flexibility in the formed connector, thus improving its durability.

[0017] In some embodiments, the lower part of the inner support structure is provided with a groove corresponding to the slot, the back of the groove in the outer shell is provided with a second mounting part for mounting the second metal sheet group, and the front of the inner support structure above the groove is provided with a first mounting part for mounting the first metal sheet group.

[0018] Therefore, by setting it up in this way, the first mounting part can be formed by utilizing part of the space in the depth direction corresponding to the groove on the upper part of the inner support structure, thereby effectively improving the utilization rate of the internal space of the overall adapter plug and reducing the space occupied by the overall adapter plug.

[0019] In some embodiments, the first mounting part includes a grounding placement groove disposed on the front of the inner support structure, a first power connection placement groove disposed on the left side of the grounding placement groove, and a second power connection placement groove disposed on the right side of the grounding placement groove. A grounding wire through hole is disposed below the grounding placement groove, a first power connection wire through hole is disposed on the left side of the first power connection placement groove, and a second power connection wire through hole is disposed on the right side of the second power connection placement groove.

[0020] Therefore, by setting it up in this way, the positions of each part of the structure can be adjusted as much as possible while ensuring the safety of the overall structure, and the space occupied by each part can be compressed, thereby effectively improving the utilization rate of the internal space of the overall adapter plug and reducing the space occupied by the overall adapter plug.

[0021] In some embodiments, the second mounting portion includes a contact through hole disposed on the groove for a grounding contact to pass through, the contact through hole being disposed below the grounding wire through hole, and a partition being disposed between the contact through hole and the grounding wire through hole.

[0022] Therefore, by setting it up in this way, the positions of each part of the structure can be adjusted as much as possible while ensuring the safety of the overall structure, and the space occupied by each part can be compressed, thereby effectively improving the utilization rate of the internal space of the overall adapter plug and reducing the space occupied by the overall adapter plug.

[0023] In some embodiments, the front of the inner support structure is provided with a protective door for sealing the first or second power socket.

[0024] Therefore, this design can protect the electrical socket.

[0025] In some embodiments, the first grounding socket is located between two first power connection sockets, the second grounding socket is located between two second power connection sockets, the protective door includes a baffle, the baffle is configured as a propeller and is rotatably mounted on the inner support structure with the grounding socket as the center, and the baffle is provided with an elastic element for driving the baffle to rotate to close the first power connection socket or the second power connection socket.

[0026] Therefore, this design allows for the creation of a rotating and opening protective door structure, which reduces the space occupied by the protective door when it moves, thereby further improving the utilization rate of the internal space of the overall adapter plug and reducing the overall space occupied by the adapter plug.

[0027] In some embodiments, a USB port and / or a Type-C port are provided on the top of the housing, and a circuit board connected to the USB port and / or the Type-C port is disposed on the back of the first mounting portion on the inner support structure.

[0028] Therefore, this configuration allows for the use of space on the back of the first mounting section of the inner support structure to accommodate USB and / or Type-C ports, thereby increasing the functionality of the overall adapter and improving the internal space utilization of the adapter. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the conductive metal sheet according to one embodiment of the present invention.

[0030] Figure 2 This is a schematic diagram of the overall structure of a multi-standard adapter plug according to one embodiment of the present invention;

[0031] Figure 3 This is an exploded view of the overall structure of a multi-standard adapter plug according to one embodiment of the present invention;

[0032] Figure 4 A schematic diagram of the internal support structure of a multi-standard adapter plug according to an embodiment of this utility model;

[0033] Figure 5 This is a schematic diagram of the internal structure of a multi-standard adapter plug after the cover has been removed, according to one embodiment of the present invention.

[0034] Explanation of reference numerals in the attached drawings: 1. Outer shell; 11. Cover; 12. Base plate; 13. Conductive insertion rod; 14. Slot; 21. First power connection socket; 22. First grounding socket; 23. Grounding metal piece; 24. Power connection metal piece; 241. 4mm socket; 242. 5mm socket; 243. Angled structure; 244. Metal piece body; 245. Bending part; 246. Clamping structure; 247. End opening; 248. Side opening; 249. Limiting part; 2491. Notch; 31. Second power connection socket; 32. 1. Second grounding socket; 33. Grounding contact; 4. Inner bracket structure; 41. First mounting part; 411. First power connection placement groove; 412. Grounding placement groove; 413. Second power connection placement groove; 414. First power connection wire through hole; 415. Grounding wire through hole; 416. Second power connection wire through hole; 42. Second mounting part; 43. Groove; 44. Contact through hole; 45. Partition; 51. Baffle; 52. Elastic element; 53. Mounting plate; 61. USB port; 62. Type-C port; 63. Circuit board. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0036] In the description of this application, it should be understood that the use of terms such as "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings is solely for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Features defined with "first" and "second" are used to distinguish feature names and do not have special meanings. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] It should also be noted that, in this document, the terms "comprising" or "including" include not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The terminology used herein is generally that commonly used by those skilled in the art; in case of any discrepancy with commonly used terminology, the terminology used herein shall prevail.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0040] The present invention will now be described in further detail with reference to the accompanying drawings.

[0041] Figure 1 The schematic diagram illustrates the overall structure of the conductive metal sheet according to one embodiment of this utility model, with reference to... Figure 1 As shown, the electrical contact metal sheet of this utility model includes a metal sheet body 244. Two opposite sides of the metal sheet body 244 are bent in the same direction perpendicular to the metal sheet body 244 to form two bent portions 245. The two bent portions 245 have free ends along the direction of the first end of the metal sheet body 244. The free ends of the two bent portions 245 bend towards each other and extend to form a clip structure 246.

[0042] Specifically, refer to Figure 1 As shown, the upper and lower sides of the metal sheet 244 are bent to form bent portions 245. Taking the left-side electrical contact metal sheet as an example, the left ends of the two bent portions 245 are further bent and extended towards each other to form a clip structure 246. The clip structure 246 includes a side opening 248 facing outward and an end opening 247 located at the end of the clip structure 246. The clip structure 246 is provided with a plug interface for inserting the plug of an external electrical appliance, and the plug interface is located on the side opening 248.

[0043] The second end of the metal sheet 244 is bent to form a limiting part 249, as shown in the figure. Figure 1As shown, the second end is the end opposite to the first end. The bending direction of the second end of the metal sheet 244 is consistent with the bending direction of the bent portion 245 to form a limiting portion 249. A notch 2491 is provided on the limiting portion 249, and the end opening 247 of the clip structure 246 extends into the notch 2491, so that the notch 2491 can limit the opening range of the end opening 247 of the clip structure 246.

[0044] Continue to refer to Figure 1 As shown, the end of the connector is provided with an outwardly expanding beveled structure 243, and the connector is provided with a 4mm socket 241 and a 5mm socket 242 to accommodate the insertion of the Italian standard plug. The 4mm socket 241 and the 5mm socket 242 are arranged side by side and form a flat figure-eight shape. The 4mm socket 241 is located on the side of the 5mm socket 242 near the end opening 247 of the clip structure 246, so that the 4mm socket 241 can be more easily opened, thereby further accommodating the 4.8mm power connection plug of the German standard plug.

[0045] The electrical contact metal piece of this invention can limit the opening range of the end opening 247 of the clip structure 246 through the notch 2491, thereby alleviating the situation where the end opening 247 of the clip structure 246 opens too wide after the plug is inserted into the socket, causing the clip structure 246 to lose its elasticity and deform. Simultaneously, by limiting the opening range of the end opening 247 of the clip structure 246 through the notch 2491, it can also ensure that the clip structure 246 can stably contact the plug after the plug is inserted into the socket, improving safety and stability during use. Furthermore, the electrical contact metal piece of this invention can accommodate both Italian and German standard electrical plugs, allowing sockets using this electrical contact metal piece to accommodate both Italian and German standard plugs, improving applicability in various scenarios.

[0046] Figure 2 The overall structure of the multi-standard adapter plug according to one embodiment of this utility model is schematically shown, with reference to... Figure 2 and Figure 3As shown, the multi-standard adapter plug of this utility model includes a housing 1 and a first socket group and a second socket group disposed on the housing 1, wherein the conductive metal piece 24 in the first metal piece group and / or the second metal piece group is the conductive metal piece described in any of the above embodiments. Specifically, the housing 1 includes a base plate 12 and a cover 11. A conductive plug 13 is disposed on the base plate 12. The first socket group and the second socket group are disposed on the cover 11. An inner support structure 4 is disposed on the inner side of the cover 11. The inner support structure 4 is provided with a first metal piece group corresponding to the first socket group and a second metal piece group corresponding to the second socket group. The conductive plug 13 is connected to the first metal piece group and the second metal piece group. Specifically, the conductive plug 13 can be designed as a plug of different national standards according to actual needs. Figure 2 and Figure 3 In the embodiment shown, the pin is specifically configured as a British standard pin.

[0047] The first set of sockets is located on the upper part of the outer casing 1 and includes a first power socket 21 and a first grounding socket 22. The second set of sockets is located on the lower part of the outer casing 1, and a recessed slot 14 is formed on the outer casing 1. The second set of sockets is located on the bottom surface of the slot 14 and includes a second power socket 31, a second grounding socket 32, and a grounding contact 33, thereby enabling compatibility with German standard three-phase plugs. The first power socket 21 and the second power socket 31 are both designed to be compatible with at least two different national standards for plug insertion. Here, an embodiment that is compatible with both German and Italian standard plugs will be described in further detail. The three-phase plugs of the Italian standard plug are arranged side-by-side, with the grounding plug in the middle. The power socket has two specifications: 4mm and 5mm. The power socket of the two-phase plug of the German standard plug is 4.8mm, and the width between its two plugs is the same as the width between the two plugs of the 4mm plug of the Italian standard plug. Furthermore, the first socket group can be configured to be compatible with Italian standard plugs and two-phase German standard plugs, and the second socket group can be configured to be compatible with Italian standard plugs and three-phase German standard plugs. Moreover, by configuring the electrical contact metal pieces 24 in both the first and second metal piece groups as the aforementioned electrical contact metal pieces 24 with 4mm sockets 241 and 5mm sockets 242, the aforementioned function of being compatible with both German and Italian standard plugs can be achieved.

[0048] Specifically, refer to Figure 3 As shown, when setting the first metal plate group corresponding to the first socket group, the end openings 247 of the clip structure 246 on the two energized metal plates 24 are arranged facing each other, and the grounding metal plate 23 is arranged in the middle of the two energized metal plates 24. For the second socket group, the grounding contact 33 is integrally set with the grounding metal plate 23, and the grounding contact 33 extends from the upper and lower ends of the slot 14, and the two energized metal plates 24 are arranged on both sides of the grounding metal plate 23.

[0049] Reference Figure 4 As shown, the inner support structure 4 is a support structure for placing the first metal sheet group and the second metal sheet group. The inner support structure 4 is mounted on the base plate 12. The lower part of the inner support structure 4 has a groove 43 corresponding to the slot 14. A second mounting part 42 for placing the second metal sheet group is located on the back of the groove 43 on the base plate 12, and a first mounting part 41 for placing the first metal sheet group is located on the front above the groove 43. The structures of the first mounting part 41 and the second mounting part 42 are similar, differing only in their positions. Here, the first mounting part 41 will be used as an example for explanation. (Refer to...) Figure 4 As shown, the first mounting part 41 includes a grounding placement groove 412 disposed on the upper front of the inner support structure 4, a first power connection placement groove 411 disposed on the left side of the grounding placement groove 412, and a second power connection placement groove 413 disposed on the right side of the grounding placement groove 412. On the first mounting part 41, a grounding wire through hole 415 is provided below the grounding placement groove 412, a first power connection wire through hole 414 is provided on the left side of the first power connection placement groove 411, and a second power connection wire through hole 416 is provided on the right side of the second power connection placement groove 413, thereby enabling the corresponding power connection wire, ground wire, and power connection metal piece 24 and grounding metal piece 23 to be connected. For the second mounting part 42, since the grounding contact 33 needs to extend from both the upper and lower ends of the slot 14, refer to... Figure 4 As shown, the upper end of the groove 43 is provided with a contact through hole 44 for the grounding contact 33 to pass through, and the grounding contact 33 at the lower end extends from the lower part of the inner support structure 4. The contact through hole 44 is located below the grounding wire through hole 415, and a partition 45 is provided between the contact through hole 44 and the grounding wire through hole 415 to separate them. This allows for the adjustment of the setting position of each part of the structure as much as possible while ensuring safety, compressing the space occupied by each part of the structure, improving the utilization rate of the internal space of the overall adapter plug, and reducing the overall space occupied by the adapter plug.

[0050] The front of the inner support structure 4 is also provided with a protective door for sealing the first power socket 21 or the second power socket 31. The protective door can be directly installed on the inner support structure 4, or it can be installed on the mounting plate 53 installed on the inner support structure 4. (Refer to...) Figure 5As shown, a mounting plate 53 is provided at the position of the first socket group on the upper part of the inner support structure 4. The mounting plate 53 has through holes corresponding to the first socket group, and a protective door located on the first socket group is provided on the mounting plate 53. The protective door at the lower part of the inner support structure 4, located on the second socket group, is directly provided on the front of the inner support structure 4. Specifically, the protective door includes a baffle 51, which is propeller-shaped and rotates around the grounding socket. The baffle 51 also has an elastic element 52, which can be a spring. The elastic element 52 is configured to drive the baffle 51 to rotate and close the first power socket 21 or the second power socket 31. Thus, when the power plug is inserted, the baffle 51 is squeezed and rotates to open the first power socket 21 or the second power socket 31. When the power plug is pulled out, the baffle 51 rotates back under the action of the elastic element 52 to block and close the power socket.

[0051] Since the first metal plate group is located on the upper front of the inner support structure 4, the space between the upper back of the inner support structure 4 and the base plate 12 can be used to provide a USB port 61 and / or a Type-C port 62. Specifically, refer to... Figure 2 As shown, the top of the outer casing 1 is provided with a USB port 61 and a Type-C port 62. The circuit boards 63 of the USB port 61 and the Type-C port 62 are arranged in the space between the back of the inner support structure 4 and the bottom plate 12, thereby further utilizing the space inside the outer casing 1 and improving the space utilization rate of the adapter plug.

[0052] The first socket group of this multi-standard adapter is compatible with two-phase plugs of German standard sockets, and the second socket group is compatible with three-phase plugs of German standard sockets. Both the first and second socket groups are provided with corresponding grounding sockets. The power plugs of other national standard plugs can be inserted into the node sockets of the first or second socket groups. Thus, the first and second socket groups are compatible not only with German standard plugs, but also with two-phase and three-phase plugs of other national standard plugs. The overall size of the structure is greatly reduced, making the adapter both functional and portable.

[0053] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A conductive metal sheet, characterized in that: The device includes a metal sheet body, on which two opposite sides are bent in the same direction perpendicular to the metal sheet body to form two bent portions. The two bent portions have free ends along the direction of the first end of the metal sheet body. The free ends of the two bent portions bend towards each other to form a clip structure. The clip structure has a plug interface for inserting the plug of an external electrical appliance. The second end of the metal sheet body is bent to form a limiting portion. The limiting portion has a notch. The end opening of the clip structure extends into the notch.

2. The conductive metal sheet according to claim 1, characterized in that: The end of the connector is provided with an outwardly expanding beveled structure.

3. The conductive metal sheet according to claim 2, characterized in that: The connector is provided with a 4mm socket and a 5mm socket. The 4mm socket and the 5mm socket are arranged side by side to form a flat "8" shape. The 4mm socket is located on the side of the 5mm socket near the end opening of the clip structure.

4. A multi-standard adapter plug, characterized in that: The device includes an outer casing, on which a first socket group and a second socket group are provided. Inside the outer casing, a first metal plate group corresponding to the first socket group and a second metal plate group corresponding to the second socket group are provided. Inside the outer casing, an inner support structure is also provided. The first metal plate group and the second metal plate group are both disposed on the inner support structure. The electrical contact metal plate in the first metal plate group and / or the second metal plate group is the electrical contact metal plate as described in any one of claims 1 to 3.

5. The multi-standard adapter plug according to claim 4, characterized in that: The first socket group includes a first power socket and a first grounding socket. The outer casing has a recessed slot, and the second socket group is disposed on the bottom surface of the slot. The second socket group includes a second power socket, a second ground socket, and a ground contact.

6. The multi-standard adapter plug according to claim 5, characterized in that: The lower part of the inner support structure is provided with a groove corresponding to the slot. The back of the groove in the outer shell is provided with a second mounting part for mounting the second metal sheet group. The front of the inner support structure above the groove is provided with a first mounting part for mounting the first metal sheet group.

7. The multi-standard adapter plug according to claim 6, characterized in that: The first mounting part includes a grounding placement groove disposed on the front of the inner support structure, a first power connection placement groove disposed on the left side of the grounding placement groove, and a second power connection placement groove disposed on the right side of the grounding placement groove. A grounding wire through hole is disposed below the grounding placement groove, a first power connection wire through hole is disposed on the left side of the first power connection placement groove, and a second power connection wire through hole is disposed on the right side of the second power connection placement groove.

8. The multi-standard adapter plug according to claim 7, characterized in that: The second mounting part includes a contact through hole disposed on the groove for the grounding contact to pass through. The contact through hole is disposed below the grounding wire through hole, and a partition is disposed between the contact through hole and the grounding wire through hole.

9. The multi-standard adapter plug according to claim 4, characterized in that: The front of the inner support structure is provided with a protective door for sealing the first or second power socket. The first grounding socket is located between the two first power connection sockets, and the second grounding socket is located between the two second power connection sockets. The protective door includes a baffle, which is propeller-shaped and rotates around the grounding socket on the inner support structure. The baffle is provided with an elastic element for driving the baffle to rotate to close the first or second power connection socket.

10. The multi-standard adapter plug according to claim 6, characterized in that: The top of the outer casing is provided with a USB port and / or a Type-C port, and the circuit board connected to the USB port and / or the Type-C port is located on the back of the first mounting part on the inner support structure.

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