Small-size pin combination structure for power converter

Abstract

Disclosed in the present invention is a small-size pin combination structure for a power converter, comprising a European-standard pin assembly arranged in a power converter and a British-standard pin assembly arranged in the power converter. The British-standard pin assembly comprises a British-standard ground wire pin arranged in the power converter; the European-standard pin assembly comprises a European-standard socket contact arranged in the power converter; a British-standard ground wire clearance groove matching the British-standard ground wire pin and recessed inwards is formed at the middle of the European-standard socket contact; and the British-standard ground wire pin moves up and down in the British-standard ground wire clearance groove. The present invention saves the space in the power converter, makes the power converter smaller and more convenient to carry when going out, and improves the use experience of the power converter.

Description

A smaller pin assembly structure for use in power converters Technical Field

[0001] This invention relates to the field of power converter technology, and more particularly to a smaller pin assembly structure for use in power converters. Background Technology

[0002] Because plugs and sockets differ from country to country, they are not interchangeable. If you need to insert a plug into an incompatible socket, you will need a power adapter. A power adapter is an conversion tool; to use it, you plug the adapter into the target socket and then insert the target plug into the matching socket on the adapter. Power adapters have greatly improved the convenience of traveling, especially when traveling internationally, eliminating worries about incompatibility between the plugs of your electronic devices and local power outlets.

[0003] In traditional power converters, the prongs are typically in a fixed, extended position. Power converters with multiple prongs require multiple prongs, and these prongs need to be positioned separately to prevent interference between them. However, this separate placement results in a larger overall size for the power converter, making it inconvenient to carry and negatively impacting the user experience. Summary of the Invention

[0004] To address the aforementioned shortcomings, the present invention aims to provide a smaller plug assembly structure for power converters. The European standard socket has a British standard grounding slot to accommodate the British standard grounding pin, allowing the British standard grounding pin to move within the European standard socket. This saves space within the power converter, making it smaller, easier to carry, and improving the user experience.

[0005] The technical solution adopted by the present invention to achieve the above objectives is as follows:

[0006] A smaller plug assembly structure for use on a power converter includes a European standard plug assembly and a British standard plug assembly disposed within the power converter. The British standard plug assembly includes a British standard ground pin disposed within the power converter, and the European standard plug assembly includes a European standard socket disposed within the power converter. The center of the European standard socket has an inwardly recessed British standard ground clearance groove that matches the British standard ground pin. The British standard ground pin can move up and down within the British standard ground clearance groove.

[0007] As a further improvement of the present invention, the European standard plug assembly further includes a European standard connector slidably disposed within the European standard socket, a European standard button disposed on the European standard connector, a European standard live wire pin disposed on the European standard connector, and a European standard neutral wire pin disposed on the European standard connector.

[0008] As a further improvement of the present invention, the European standard connector is provided with a European standard push-out clearance channel for inserting the British standard ground pin.

[0009] As a further improvement of the present invention, the European standard connector has at least one European standard limiting protrusion on the side away from the British standard pin assembly, and the European standard socket has a limiting back plate on the side away from the British standard pin, and at least one European standard limiting sliding groove is formed in the middle of the limiting back plate for the European standard limiting protrusion to move.

[0010] As a further improvement of the present invention, the power converter includes a housing, an European standard push-out limiting post formed on the inner wall of the housing that matches the European standard plug assembly, a European standard push-out limiting groove formed at one end of the European standard socket facing the inner wall of the housing that matches the European standard push-out limiting post, and a European standard push-out limiting block formed on the European standard button that movably presses against the European standard push-out limiting post.

[0011] As a further improvement of the present invention, the European standard connector is provided with a European standard pressing limit step extending toward the European standard button, the European standard button is provided with a European standard pressing sliding groove for sliding the European standard pressing limit step, and a European standard pressing hook is provided in the middle of the European standard pressing sliding groove for hooking onto the European standard pressing limit step.

[0012] As a further improvement of the present invention, the UK standard pin assembly includes a UK standard connector disposed in the power converter, a UK standard button disposed on the UK standard connector, a UK standard live wire pin disposed on the UK standard connector, a UK standard neutral wire pin disposed on the UK standard connector, and a UK standard ground wire pin disposed on the UK standard connector.

[0013] As a further improvement of the present invention, the British standard connector has a British standard pressing limit step extending toward the British standard button, the British standard button has a British standard pressing sliding groove for sliding the British standard pressing limit step, and a British standard pressing hook is formed in the middle of the British standard pressing sliding groove, which can be hooked onto the British standard pressing limit step.

[0014] As a further improvement of the present invention, it also includes a US standard plug assembly disposed between the UK standard plug assembly and the EU standard plug assembly. The US standard plug assembly includes a US standard connector disposed within the power converter and located between the UK standard plug assembly and the EU standard plug assembly, a US standard button disposed on the US standard connector, a US standard live wire pin disposed on the US standard connector, and a US standard neutral wire pin disposed on the US standard connector.

[0015] As a further improvement of the present invention, the American standard connector is provided with an American standard pressing limit step extending toward the American standard button, the American standard button is provided with an American standard pressing sliding groove for sliding the American standard pressing limit step, and an American standard pressing hook is provided in the middle of the American standard pressing sliding groove for hooking onto the American standard pressing limit step.

[0016] The beneficial effects of this invention are as follows:

[0017] By configuring this plug assembly structure to include a European standard plug assembly and a British standard plug assembly disposed within the power converter, the British standard plug assembly includes a British standard ground pin disposed within the power converter, and the European standard plug assembly includes a European standard socket disposed within the power converter. The center of the European standard socket has an inwardly recessed British standard ground clearance groove that matches the British standard ground pin. The British standard ground pin can move up and down within the British standard ground clearance groove, so that the British standard ground pin can be pushed out of the European standard socket when needed, saving space within the power converter, making the power converter smaller, easier to carry, and improving the user experience of the power converter.

[0018] The above is an overview of the invention's technical solution. The invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 is an overall schematic diagram of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the present invention;

[0021] Figure 3 shows the structural diagrams of the European standard pin assembly and the British standard pin assembly;

[0022] Figure 4 is a schematic diagram of the structure of the European standard pin assembly;

[0023] Figure 5 is a schematic diagram of the other side of the European standard pin assembly;

[0024] Figure 6 is an exploded view of the European standard pin assembly;

[0025] Figure 7 is a schematic diagram of the bottom of the European standard button component;

[0026] Figure 8 is a schematic diagram of the outer shell structure;

[0027] Figure 9 is a schematic diagram of the structure of the European standard pin assembly inside the housing;

[0028] Figure 10 is a cross-sectional view of the European standard pin assembly;

[0029] Figure 11 is a structural diagram of the European standard pin assembly when it was first launched;

[0030] Figure 12 is a schematic diagram of the structure of the British standard pin assembly;

[0031] Figure 13 is an exploded view of the UK standard pin assembly;

[0032] Figure 14 is a cross-sectional view of the British standard pin assembly;

[0033] Figure 15 is a schematic diagram of the bottom of the British standard button component;

[0034] Figure 16 is a schematic diagram of the structure of the US standard pin assembly;

[0035] Figure 17 is an exploded view of the US standard pin assembly;

[0036] Figure 18 is a cross-sectional view of the US standard pin assembly;

[0037] Figure 19 is a schematic diagram of the bottom of the US standard button component;

[0038] In the diagram: 1. European standard pin assembly; 11. European standard socket; 111. British standard ground clearance groove; 112. Limiting backplate; 113. European standard limiting sliding groove; 114. European standard live wire protrusion; 115. European standard neutral wire protrusion; 116. European standard ejection limiting groove; 12. European standard connector; 121. European standard limiting protrusion; 122. European standard press-to-limit step; 13. European standard button; 131. European standard press-to-slide groove; 132. European standard press-to-hook; 133. European standard ejection limiting block; 14. European standard live wire pin; 15. European standard neutral wire pin; 16. European standard ejection clearance. 1. Channel; 2. UK Standard Pin Assembly; 21. UK Standard Ground Pin; 22. UK Standard Connector; 221. UK Standard Press-to-Limit Step; 23. UK Standard Button; 231. UK Standard Press-to-Slide Groove; 232. UK Standard Press-to-Hook; 24. UK Standard Live Wire Pin; 25. UK Standard Neutral Wire Pin; 3. US Standard Pin Assembly; 31. US Standard Connector; 311. US Standard Press-to-Limit Step; 32. US Standard Button; 321. US Standard Press-to-Slide Groove; 322. US Standard Press-to-Hook; 33. US Standard Live Wire Pin; 34. US Standard Neutral Wire Pin; 4. Housing; 41. European Standard Push-out Limit Post. Detailed Implementation

[0039] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific implementation of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0040] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do 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. Therefore, they should not be construed as limitations on this invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] Referring to Figures 1 to 19, this embodiment of the invention provides a smaller plug assembly structure for a power converter, including a European standard plug assembly 1 and a British standard plug assembly 2 disposed within the power converter. The British standard plug assembly 2 includes a British standard ground plug 21 disposed within the power converter. The European standard plug assembly 1 includes a European standard socket 11 disposed within the power converter. The center of the European standard socket 11 has an inwardly recessed British standard ground clearance groove 111 that matches the British standard ground plug 21. The British standard ground plug 21 can move up and down within the British standard ground clearance groove 111, so that the British standard ground plug 21 can be pushed out of the European standard socket 11 when needed, saving space within the power converter, making the power converter smaller, easier to carry, and improving the user experience of the power converter.

[0044] The specific structural configuration of the British standard grounding relief groove 111 is shown in Figures 2 to 4 and Figure 6. The British standard grounding relief groove 111 is generally shaped like a "Z". Its two sides are connected to the European standard socket 11. A square movable space is formed on its outer side. The square movable space matches the shape of the British standard grounding pin 21, so that the British standard grounding pin 21 is limited to radial movement, which improves the accuracy of the protrusion of the British standard grounding pin 21 and prevents poor contact due to displacement.

[0045] As shown in Figures 2 to 9, the European standard pin assembly 1 further includes a European standard connector 12 slidably disposed within the European standard socket 11, a European standard button 13 slidably connected to the European standard connector 12, a European standard live wire pin 14 disposed on the European standard connector 12, and a European standard neutral wire pin 15 disposed on the European standard connector 12. When the European standard plug assembly 1 is needed, pressing the European standard button 13 causes the European standard socket 11 to protrude outward from the power converter. The European standard connector 12, live wire 14, and neutral wire 15 connected to the European standard button 13 are then pushed outward from the power converter along the European standard socket 11 for power conversion. When the European standard plug assembly 1 is not needed, pressing the European standard button 13 pushes the live wire 14, neutral wire 15, and socket 11 back into the power converter, completing the storage process. The entire process is simple, convenient, and provides a good user experience.

[0046] To prevent the UK standard ground pin 21 from obstructing the European standard pin assembly 1 when it is pushed out, thus preventing the European standard pin assembly 1 from being used, as shown in Figures 2 to 6 and Figure 11, a European standard push-out clearance channel 16 is formed between the European standard connector 12 and the European standard button 13 for the UK standard ground pin 21 to be inserted. When the European standard pin assembly 1 is to be pushed out of the power converter for use, the European standard connector 12 and the European standard button 13 move outward from the power converter, the top end of the UK standard ground pin 21 enters the European standard push-out clearance channel 16, and the tail end of the UK standard ground pin 21 enters the UK standard ground clearance groove 111, thereby achieving clearance and preventing the UK standard ground pin 21 from obstructing the European standard pin assembly 1 when it is pushed out, thus preventing the European standard pin assembly 1 from being used.

[0047] To further improve the accuracy of pushing and pulling the European standard pin assembly 1, as shown in Figure 5, the European standard connector 12 has at least one European standard limiting protrusion 121 on the side away from the British standard pin assembly 2, and the European standard sleeve 11 has a limiting back plate 112 on the side away from the British standard pin. The limiting back plate 112 has at least one European standard limiting sliding groove 113 in its center for the European standard limiting protrusion 121 to move. When the European standard button 13 drives the European standard connector 12 to push and pull, the European standard limiting protrusion 121 slides within the European standard limiting sliding groove 113 and can only move radially under the limiting effect of the European standard limiting sliding groove 113. This allows the European standard connector 12 to drive the European standard button 13, as well as the European standard neutral pin 15 and European standard live pin 14, to move more accurately within the European standard sleeve 11, preventing the European standard pin assembly 1 from shifting during pushing and pulling.

[0048] As shown in Figure 1, the European standard neutral pin 15 and the European standard live pin 14 extend from the European standard socket 11. The bottom of the European standard socket 11 is provided with a European standard live wire protrusion 114 for the European standard live wire pin 14 to protrude out of the power converter, and a European standard neutral wire protrusion 115 for the European standard neutral pin 15 to protrude out of the power converter. When the European standard plug assembly 1 is pushed out of the power converter, the European standard live wire plug 14 extends from the European standard live wire protrusion 114, and the European standard neutral wire plug 15 extends from the European standard neutral wire protrusion 115. Through the corresponding limiting protrusions of the European standard live wire protrusion 114 and the European standard neutral wire protrusion 115, the European standard limiting protrusion 121 moves within the European standard limiting sliding groove 113, thereby enabling the European standard plug assembly 1 to be pushed in and out of the power converter more accurately, improving the activity efficiency of the European standard plug assembly 1.

[0049] To allow the European standard plug assembly 1 to slide more smoothly within the power converter, as shown in Figures 8 and 9, the power converter includes a housing 4. A European standard push-out limiting post 41, matching the European standard plug assembly 1, is formed on the inner wall of the housing 4. A European standard push-out limiting groove 116, matching the European standard push-out limiting post 41, is formed at the end of the European standard socket 11 facing the inner wall of the housing 4. A European standard push-out limiting block 133, which movably presses against the European standard push-out limiting post 41, is formed on the European standard button component 13. A spring is provided between the European standard connector 12 and the European standard button 13. When the European standard pin assembly 1 is needed, the European standard button 13 is pressed, and the spring is compressed and deformed on the European standard connector 12. The European standard button 13 extends into the housing 4, causing the European standard push-out limit block 133 to be misaligned with the European standard push-out limit post 41. At this time, the European standard pin assembly 1 can be pushed out of the power converter. When the European standard pin assembly 1 is not needed, the European standard pin assembly 1 retracts back into the housing 4 along the European standard push-out limit post 41. The pressing action on the European standard button 13 is released, and the European standard button 13 extends out of the housing 4 under the elastic restoring force of the spring. This causes the European standard push-out limit block 133 on the European standard button 13 to abut against the upper end surface of the European standard push-out limit post 41. At this time, without the action of external pressing force, the European standard pin assembly 1 cannot extend out of the housing 4, effectively improving the safety of the power converter. By setting the European standard ejection limiting groove 116 to match the European standard ejection limiting post 41, the European standard ejection limiting groove 116 slides on the European standard ejection limiting post 41 and receives the guiding action of the European standard ejection limiting post 41, thereby making a straight sliding trajectory, so that the European standard pin assembly 1 can be ejected and retracted with higher accuracy, without displacement, and improving the efficiency of ejection and retraction.

[0050] As shown in Figures 6 to 7 and Figure 10, the interaction between the European standard button 13 and the European standard connector 12 is as follows: the European standard connector 12 has a European standard pressing limit step 122 extending toward the European standard button 13; the European standard button 13 has a European standard pressing sliding groove 131 for sliding along the European standard pressing limit step 122; and a European standard pressing hook 132 is formed in the middle of the European standard pressing sliding groove 131, which can be hooked onto the European standard pressing limit step 122. When the European standard button 13 is released, the European standard button 13 moves toward the outer shell under the elastic restoring force of the spring. 4. When the European standard pressing sliding groove 131 and the European standard pressing hook 132 move outward toward the outer shell 4, the European standard pressing limiting step 122 moves relative to the European standard pressing sliding groove 131. After the European standard pressing sliding groove 131 and the European standard pressing hook 132 move outward toward the outer shell 4 a certain distance, the European standard pressing hook 132 hooks onto the inner side of the European standard pressing limiting step 122, thereby limiting the travel of the European standard button 13, preventing the European standard button 13 from protruding excessively outward, facilitating the cooperation between the components, and preventing the European standard button 13 from separating from the European standard connector 12. When the European standard pin assembly 1 is needed, press the European standard button 13 to push the European standard pressing sliding groove 131 and the European standard pressing hook 132 toward the inside of the housing 4. The European standard pressing limiting step 122 moves relative to the European standard pressing sliding groove 131. At this time, the European standard pressing limiting step 122 and the European standard pressing hook 132 are not in contact, and the European standard pin assembly 1 can be pushed out of the housing 4 normally.

[0051] The specific structural configuration of the UK standard pin assembly 2 is shown in Figures 2 to 3 and Figures 11 to 15. The UK standard pin assembly 2 includes a UK standard connector 22 disposed within the power converter, a UK standard button 23 slidably connected to the UK standard connector 22, a UK standard live wire pin 24 disposed on the UK standard connector 22, a UK standard neutral wire pin 25 disposed on the UK standard connector 22, and a UK standard ground wire pin 21 disposed on the UK standard connector 22. When the UK standard pin assembly 2 is needed, the UK standard connector 22, the UK standard live wire pin 24, the UK standard neutral wire pin 25, and the UK standard ground wire pin 21 connected to the UK standard button 23 can be pushed out of the power converter for power conversion by pressing the UK standard button 23. When the UK standard pin assembly 2 is not needed, the UK standard connector 22, UK standard live wire pin 24, UK standard neutral wire pin 25 and UK standard ground wire pin 21 connected to the UK standard button 23 can be pushed back into the power converter by pressing the UK standard button 23 to complete the storage. The whole process is simple and convenient and provides a good user experience.

[0052] As shown in Figures 13 to 15, the interaction between the British standard button 23 and the British standard connector 22 is as follows: the British standard connector 22 has a British standard pressing limit step 221 extending toward the British standard button 23; the British standard button 23 has a British standard pressing sliding groove 231 for sliding along the British standard pressing limit step 221; and a British standard pressing hook 232 is formed in the middle of the British standard pressing sliding groove 231, which can be hooked onto the British standard pressing limit step 221. A spring is provided between the UK standard connector 22 and the UK standard button 23. When the UK standard pin assembly 2 is needed, the UK standard button 23 is pressed, and the spring is compressed and deformed on the UK standard connector 22. The UK standard button 23 extends into the housing 4, and the UK standard pressing limit step 221 moves relative to the UK standard pressing sliding groove 231. At this time, the UK standard pressing limit step 221 and the UK standard pressing hook 232 are not in contact, and the UK standard pin assembly 2 can be pushed out of the housing 4 normally. When the British standard button 23 is released, it protrudes outward toward the outer casing 4 under the elastic restoring force of the spring. At this time, the British standard pressing sliding groove 231 and the British standard pressing hook 232 move outward toward the outer casing 4. The British standard pressing limiting step 221 moves relative to the British standard pressing sliding groove 231. The British standard pressing hook 232 hooks onto the inner side of the British standard pressing limiting step 221, thereby limiting the travel of the British standard button 23, preventing the British standard button 23 from protruding excessively outward, facilitating the cooperation between the components, and preventing the British standard button 23 from separating from the British standard connector 22.

[0053] To further reduce the size of the power converter, as shown in Figures 2 and 16 to 19, this structure also includes a US standard plug assembly 3 disposed between the UK standard plug assembly 2 and the EU standard plug assembly 1. The US standard plug assembly 3 includes a US standard connector 31 disposed within the power converter and located between the UK standard plug assembly 2 and the EU standard plug assembly 1, a US standard button 32 slidably connected to the US standard connector 31, a US standard live wire pin 33 disposed on the US standard connector 31, and a US standard neutral wire pin 34 disposed on the US standard connector 31. When the US standard plug assembly 3 is needed, pressing the US standard button 32 will push the US standard connector 31, the US standard live wire pin 33, and the US standard neutral wire pin 34 connected to the US standard button 32 out of the power converter for power conversion. When the US standard plug assembly 3 is not needed, pressing the US standard button 32 will push the US standard connector 31, US standard live wire pin 33, and US standard neutral wire pin 34 connected to the US standard button 32 back into the power converter, completing the storage process. The whole process is simple and convenient, providing a good user experience. Furthermore, by placing the US standard plug assembly 3 between the UK standard plug assembly 2 and the EU standard plug assembly 1, the space between the UK standard plug assembly 2 and the EU standard plug assembly 1 is fully utilized, further saving space inside the power converter. This allows for a further reduction in the size of the power converter, making it easier to carry and improving the user experience.

[0054] As shown in Figures 17 to 19, the interaction between the American standard button 32 and the American standard connector 31 is as follows: the American standard connector 31 has an American standard pressing limit step 311 extending toward the American standard button 32; the American standard button 32 has an American standard pressing sliding groove 321 for sliding along the American standard pressing limit step 311; and a American standard pressing hook 322 is formed in the middle of the American standard pressing sliding groove 321, which can be hooked onto the American standard pressing limit step 311. A spring is provided between the US standard connector 31 and the US standard button 32. When the US standard pin assembly 3 is needed, the US standard button 32 is pressed, and the spring is compressed and deformed on the US standard connector 31. The US standard button 32 extends into the housing 4, and the US standard pressing limit step 311 moves relative to the US standard pressing sliding groove 321. At this time, the US standard pressing limit step 311 and the US standard pressing hook 322 are not in contact, and the US standard pin assembly 3 can be pushed out of the housing 4 normally. When the US standard button 32 is released, the US standard button 32 protrudes outward toward the outer shell 4 under the elastic restoring force of the spring. At this time, the US standard pressing sliding groove 321 and the US standard pressing hook 322 move outward toward the outer shell 4. The US standard pressing limiting step 311 moves relative to the US standard pressing sliding groove 321. The US standard pressing hook 322 hooks onto the inner side of the US standard pressing limiting step 311, thereby limiting the movement stroke of the US standard button 32, preventing the US standard button 32 from protruding excessively outward, facilitating the cooperation between the components, and preventing the US standard button 32 from separating from the US standard connector 31.

[0055] It should be noted that the smaller pin assembly structure for power converters disclosed in this invention is an improvement on the specific structure, but the specific control method is not an innovation of this invention. The movable baffle, European standard live wire pin, European standard neutral wire pin, British standard live wire pin, British standard ground wire pin, British standard neutral wire pin, American standard live wire pin, American standard neutral wire pin, and other components involved in this invention can be general standard parts or components known to those skilled in the art. Their structures, principles, and control methods are all known to those skilled in the art through technical manuals or conventional experimental methods.

[0056] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, other structures obtained by using the same or similar technical features as the above embodiments of the present invention are all within the protection scope of the present invention.

Claims

1. A smaller pin assembly structure for use in a power converter, characterized in that: The power converter comprises a European plug pin assembly arranged in the power converter, and an American plug pin assembly arranged in the power converter, the American plug pin assembly comprises an American ground pin arranged in the power converter, the European plug pin assembly comprises a European plug sleeve arranged in the power converter, a middle part of the European plug sleeve is formed with an American ground wire accommodation groove recessed inward and matched with the American ground pin, and the American ground pin moves up and down in the American ground wire accommodation groove.

2. The pin combination structure for use on a power converter and having a smaller volume according to claim 1, characterized in that: The European plug pin assembly further comprises a European plug connector slidingly arranged in the European plug sleeve, a European key piece arranged on the European plug connector, a European live pin arranged on the European plug connector, and a European zero pin arranged on the European plug connector.

3. The pin combination structure for use on a power converter and being smaller in volume according to claim 2, characterized in that: The European plug connector is formed with a European push-out accommodation channel for the American ground pin.

4. The pin combination structure for use on a power converter and being smaller in volume according to claim 2, characterized in that: A side of the European plug connector away from the American plug pin assembly is formed with at least one European limiting protruding column, a side of the European plug sleeve away from the American plug pin assembly is formed with a limiting back plate, and a middle part of the limiting back plate is formed with at least one European limiting sliding groove for the European limiting protruding column.

5. The pin combination structure for use on a power converter and being smaller in volume according to claim 2, characterized in that: The power converter comprises a shell, an inner wall of the shell is formed with a European push-out limiting column matched with the European plug pin assembly, and an end of the European plug sleeve towards the inner wall of the shell is formed with a European push-out limiting groove matched with the European push-out limiting column.

6. The pin combination structure for use on a power converter and being smaller in volume according to claim 2, characterized in that: The European plug connector is formed with a European pressing limiting step extending towards the European key piece, the European key piece is formed with a European pressing sliding groove for the European pressing limiting step to slide, and a middle part of the European pressing sliding groove is formed with a European pressing hook capable of being hooked on the European pressing limiting step.

7. The pin combination structure for power converter on and smaller volume according to claim 1, wherein: The American plug pin assembly comprises an American plug connector arranged in the power converter, an American key piece arranged on the American plug connector, an American live pin arranged on the American plug connector, and an American zero pin arranged on the American plug connector.

8. The pin combination structure for use on a power converter and being smaller in volume according to claim 7, characterized in that: The American plug connector is formed with an American pressing limiting step extending towards the American key piece, the American key piece is formed with an American pressing sliding groove for the American pressing limiting step to slide, and a middle part of the American pressing sliding groove is formed with an American pressing hook capable of being hooked on the American pressing limiting step.

9. The pin combination structure for power converter on and smaller volume according to claim 1, wherein: The power converter further comprises an American plug pin assembly arranged between the American plug pin assembly and the European plug pin assembly, the American plug pin assembly comprises an American plug connector arranged in the power converter between the American plug pin assembly and the European plug pin assembly, an American key piece arranged on the American plug connector, an American live pin arranged on the American plug connector, and an American zero pin arranged on the American plug connector.

10. The pin combination structure for use on a power converter and being smaller in volume according to claim 9, characterized in that: The American standard connector is provided with an American standard pressing limiting step extending towards the direction of the American standard key piece, the American standard key piece is provided with an American standard pressing sliding groove for the American standard pressing limiting step to slide, and the middle part of the American standard pressing sliding groove is provided with an American standard pressing hook capable of being hooked on the American standard pressing limiting step.

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