A multi-country universal conversion socket of a wide adaptation high-stability capacity-increasing structure
By adding an extension shell and locking pins to the converter housing, the problem of loosening when the power converter is incompatible with socket standards in different countries is solved, achieving a stable connection between the plug and the socket, and improving charging stability and user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN SHENSAI TECH CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-21
AI Technical Summary
Existing power converters are prone to loosening and unstable charging when the socket standards of different countries are incompatible, especially with high-power configurations, resulting in a very poor user experience.
A multinational universal adapter socket with a wide adaptability and high stability capacity expansion structure was designed. By adding an expansion shell to the adapter housing and using structures such as locking pins and quick-release mechanisms, a tight connection between the plug and the socket is ensured. The cooperation of components such as sliders, toggle blocks, quick-release mechanisms, and ball bearings achieves a stable connection of the plug.
It significantly improves the connection stability between the plug and the socket, ensuring the stability and safety of charging. It is simple and convenient to operate and adapts to socket standards in multiple countries.
Smart Images

Figure CN224537512U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of adapter socket technology, specifically a multinational universal adapter socket with a wide adaptability, high stability, and capacity-enhancing structure. Background Technology
[0002] Because socket standards are not completely unified across countries, a single plug cannot be universally used worldwide. When traveling to different countries for business or leisure, it is necessary to bring a plug that corresponds to that country in order to power the electronic devices carried with you. If you travel to different countries at once, you need to bring the corresponding country's power plug, which causes inconvenience for people traveling across borders.
[0003] A search revealed a utility model patent with patent authorization announcement number CN206272035U, which discloses a universal adapter socket. Its features include: a socket body composed of an upper socket shell and a lower socket shell; a circuit board installed within the socket body; a power contact spring connected to the circuit board; a bracket for supporting the power contact spring; and a base located at the bottom of the bracket. The base is provided with a power plug group, which includes three different specifications of plugs: US standard, UK standard, and European standard. Each plug has a push button at its bottom for vertical movement. The side walls of the upper and lower socket shells corresponding to the push button have a groove. The inner wall of the groove has a first baffle and a second baffle, which restrict the vertical movement of the push button.
[0004] However, most power converters on the market use 2.5A European plugs. When plugged into German or other standard sockets at high power, their incompatibility causes the product to become loose, resulting in unstable charging and the product falling out and failing to charge. This makes it inconvenient for consumers and provides a very poor user experience. Utility Model Content
[0005] The purpose of this invention is to provide a universal adapter socket with a wide adaptability, high stability, and capacity-enhancing structure, which solves the problem of unstable power converter connection.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-national universal adapter socket with a wide adaptability and high stability capacity expansion structure, comprising an adapter housing, a plug slidably connected inside the adapter housing, an expansion shell placed on the top of the adapter housing, the plug penetrating the expansion shell and slidably connected to the expansion shell, a quick-release mechanism shared between the expansion shell and the adapter housing, a fixing plate mounted on the inner side of the expansion shell by bolts, a slider slidably connected to the fixing plate, a locking pin fixedly connected inside the slider, the locking pin penetrating the slider, the locking pin being inserted into the plug, and a spring sleeved on the outer side of the locking pin, one end of the spring being fixedly connected to the slider, and the other end of the spring being fixedly connected to the inner wall of the expansion shell.
[0007] Preferably, a lever is fixedly connected to the upper end of the slider, the lever penetrating the expansion shell and slidably connected to the expansion shell. The lever facilitates lateral pulling of the slider and activation of the locking pin.
[0008] Preferably, the quick-release mechanism includes a hollow shell fixedly connected to the top of the converter housing. The hollow shell contacts the outer wall of the expansion shell. An L-shaped insert is fixedly connected to the outer wall of the expansion shell. The L-shaped insert penetrates the hollow shell and is inserted into it. A beveled block is slidably connected inside the hollow shell. A limit pin is fixedly connected to the beveled block and is inserted into the L-shaped insert. A pusher is slidably connected to the top of the hollow shell. The pusher penetrates the hollow shell. One end of the pusher abuts against the beveled surface of the beveled block, and the other end of the pusher is fixedly connected to a pressing block. The quick-release mechanism facilitates the installation and removal of the expansion shell from the converter housing, allowing for optional installation based on individual needs.
[0009] Preferably, the upper and lower ends of the inclined block are provided with ball bearings, which are slidably connected to the inner surface of the hollow shell. The ball bearings reduce the friction between the inclined block and the hollow shell.
[0010] Preferably, a guide pin is fixedly connected to the inner wall of the expansion shell, and the guide pin is slidably connected to the inclined block. A second spring is provided inside the inclined block, one end of which is fixedly connected to the guide pin, and the other end of which is fixedly connected to the inner surface of the inclined block. The guide pin and the second spring provide auxiliary repositioning for the inclined block.
[0011] Preferably, a spring three is sleeved on the outer side of the push pin, one end of the spring three is fixedly connected to the pressing block, and the other end of the spring three is fixedly connected to the top of the hollow shell. The elastic force of the spring three can be applied to the push pin through the pressing block, which has an auxiliary repositioning function for the push pin.
[0012] Preferably, a protective sleeve is fixedly connected to the bottom edge of the pressing block, and the bottom of the protective sleeve is fixedly connected to the top of the hollow shell. The protective sleeve provides dust protection at the relative sliding point between the pressing block and the hollow shell.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. This utility model adds an extension shell to the converter housing. The extension shell is equipped with a locking pin that is extended and retracted by a spring. The locking pin has a slider and a toggle block. In this way, when the European standard plug is inserted into the German standard or other standard socket, it can be locked to prevent loosening, ensuring a tight connection between the plug and the socket and significantly improving charging stability.
[0015] 2. This utility model provides a quick-release mechanism between the converter housing and the expansion housing. The push-out mechanism is activated by pressing the push-out with a pressing block. The push-out mechanism interacts with the inclined surface of the inclined block, causing the inclined block to move laterally. This controls the engagement and disengagement of the inclined block with the L-shaped insert of the expansion housing. This allows for optional installation based on individual needs, and the operation is simple and convenient. Attached Figure Description
[0016] Figure 1 This is a perspective view of the overall structure of this utility model;
[0017] Figure 2 This utility model Figure 1 A partial structural diagram;
[0018] Figure 3 This utility model Figure 2 Enlarged view of point A;
[0019] Figure 4 This utility model Figure 1 A front sectional view of the quick-release mechanism;
[0020] Figure 5 This utility model Figure 4 Enlarged view of point B.
[0021] In the diagram: 1. Converter housing; 2. Expansion housing; 3. Quick-release mechanism; 4. Plug; 5. Fixing plate; 6. Slider; 7. Locking pin; 8. Spring 1; 9. Toggle block; 31. Hollow shell; 32. L-shaped insert; 33. Angled block; 34. Limit pin; 35. Ball bearing; 36. Guide pin; 37. Spring 2; 38. Push-pull; 39. Pressing block; 310. Spring 3; 311. Protective cover. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-4A universal adapter socket with a wide adaptability, high stability, and capacity expansion structure is disclosed. It includes an adapter housing 1, a plug 4 slidably connected inside the housing 1, an expansion shell 2 on top of the housing 1, the plug 4 penetrating and slidably connected to the expansion shell 2, a fixing plate 5 bolted to the inner side of the expansion shell 2, a slider 6 slidably connected to the fixing plate 5, a locking pin 7 fixedly connected inside the slider 6 (penetrating the slider 6), and the locking pin 7 being inserted into the plug 4. A spring 8 is sleeved on the outer side of the locking pin 7, one end of which is fixedly connected to the slider 6, and the other end is fixedly connected to the inner wall of the expansion shell 2. A lever 9 is fixedly connected to the upper end of the slider 6, penetrating and slidably connected to the expansion shell 2. The lever 9 facilitates the lateral pulling of the slider 6 and the locking pin 7.
[0024] Please see Figures 4-5 A quick-release mechanism 3 is provided between the expansion shell 2 and the converter shell 1. The quick-release mechanism 3 facilitates the installation and removal of the expansion shell 2 from the converter shell 1. Users can choose whether to install it or not according to their needs. The quick-release mechanism 3 includes a hollow shell 31 fixedly connected to the top of the converter shell 1. The hollow shell 31 contacts the outer wall of the expansion shell 2. An L-shaped insert 32 is fixedly connected to the outer wall of the expansion shell 2. The L-shaped insert 32 penetrates the hollow shell 31 and is inserted into it. An inclined block 33 is slidably connected inside the hollow shell 31. A limit pin 34 is fixedly connected to the inclined block 33. The limit pin 34 is inserted into the L-shaped insert 32. A pusher 38 is slidably connected to the top of the hollow shell 31. The pusher 38 penetrates the hollow shell 31. One end of the pusher 38 abuts against the inclined surface of the inclined block 33. The other end of the pusher 38 is fixedly connected to a pressing block 39.
[0025] Please see Figure 5 The inclined block 33 has ball bearings 35 at both its upper and lower ends, which are slidably connected to the inner surface of the hollow shell 31. The ball bearings 35 reduce friction between the inclined block 33 and the hollow shell 31. A guide pin 36 is fixedly connected to the inner wall of the expansion shell 2, and is slidably connected to the inclined block 33. A second spring 37 is installed inside the inclined block 33; one end of the second spring 37 is fixedly connected to the guide pin 36, and the other end is fixedly connected to the inner surface of the inclined block 33. The guide pin 36 and the second spring 37 provide auxiliary repositioning for the inclined block 33. A third spring 310 is fitted on the outer side of the push pin 38. One end of the third spring 310 is fixedly connected to the pressing block 39, and the other end is fixedly connected to the top of the hollow shell 31. The elastic force of the third spring 310 can be applied to the push pin 38 through the pressing block 39, providing auxiliary repositioning for the push pin 38.
[0026] A protective sleeve 311 is fixedly connected to the bottom edge of the pressing block 39, and the bottom of the protective sleeve 311 is fixedly connected to the top of the hollow shell 31. The protective sleeve 311 provides dust protection for the relative sliding area between the pusher 38 and the hollow shell 31.
[0027] The specific implementation process of this utility model is as follows: In use, firstly, the pusher 38 is pushed by the pressing block 39. The pusher 38 interacts with the inclined surface of the inclined block 33, causing the inclined block 33 to move laterally. Then, the state of the inclined block 33 is maintained. Subsequently, the expansion shell 2 is placed on top of the converter housing 1, and the L-shaped insert 32 on the expansion shell 2 is inserted into the hollow shell 31. Then, the pressing block 39 is released, and the inclined block 33 will reset under the action of the spring 37. The limiting pin 34 on the inclined block 33 is then inserted laterally. The expansion shell 2 is installed by inserting the plug 4 into the vertical part of the L-shaped insert 32. When the user pushes the plug 4 out of the converter housing 1, the locking pin 7 will be inserted laterally into the side of the plug 4 under the action of the spring 8. In this way, the plug 4 can be locked to prevent loosening when it is inserted into the German standard or legal socket, ensuring a tight connection between the plug 4 and the socket and significantly improving charging stability. Similarly, by pulling the slider 6 by the toggle block 9 and separating the locking pin 7 from the plug 4, the plug 4 can be retracted into the converter housing 1.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A universal adapter socket with wide adaptability and high stability for increasing capacity, comprising an adapter housing (1), characterized in that: The converter housing (1) has a plug (4) slidably connected inside. An expansion shell (2) is placed on the top of the converter housing (1). The plug (4) passes through the expansion shell (2) and is slidably connected to the expansion shell (2). A quick-release mechanism (3) is provided between the expansion shell (2) and the converter housing (1). A fixing plate (5) is installed on the inner side of the expansion shell (2) by bolts. A slider (6) is slidably connected on the fixing plate (5). A locking pin (7) is fixedly connected inside the slider (6), and the locking pin (7) is set through the slider (6). The locking pin (7) is inserted into the plug (4). A spring (8) is sleeved on the outside of the locking pin (7). One end of the spring (8) is fixedly connected to the slider (6), and the other end of the spring (8) is fixedly connected to the inner wall of the expansion shell (2).
2. The multinational universal adapter socket with a wide adaptability and high stability capacity expansion structure according to claim 1, characterized in that: The upper end of the slider (6) is fixedly connected to a lever (9), which penetrates the expansion shell (2) and is slidably connected to the expansion shell (2).
3. The multinational universal adapter socket with a wide adaptability and high stability capacity-increasing structure according to claim 1, characterized in that: The quick-release mechanism (3) includes a hollow shell (31) fixedly connected to the top of the converter housing (1). The hollow shell (31) is in contact with the outer wall of the expansion shell (2). An L-shaped insert (32) is fixedly connected to the outer wall of the expansion shell (2). The L-shaped insert (32) penetrates the hollow shell (31) and is inserted into the hollow shell (31). An inclined block (33) is slidably connected inside the hollow shell (31). A limiting pin (34) is fixedly connected to the inclined block (33). The limiting pin (34) is inserted into the L-shaped insert (32). A pusher (38) is slidably connected to the top of the hollow shell (31). The pusher (38) penetrates the hollow shell (31). One end of the pusher (38) abuts against the inclined surface of the inclined block (33). A pressing block (39) is fixedly connected to the other end of the pusher (38).
4. A multinational universal adapter socket with a wide adaptability and high stability capacity-enhancing structure according to claim 3, characterized in that: The upper and lower ends of the inclined block (33) are provided with ball bearings (35), and the ball bearings (35) are slidably connected to the inner surface of the hollow shell (31).
5. A multinational universal adapter socket with a wide adaptability and high stability capacity-increasing structure according to claim 3, characterized in that: The inner wall of the expansion shell (2) is fixedly connected to a guide pin (36), the guide pin (36) is slidably connected to the inclined block (33), and a second spring (37) is provided inside the inclined block (33). One end of the second spring (37) is fixedly connected to the guide pin (36), and the other end of the second spring (37) is fixedly connected to the inner surface of the inclined block (33).
6. A multinational universal adapter socket with a wide adaptability and high stability capacity-enhancing structure according to claim 3, characterized in that: A spring three (310) is sleeved on the outside of the pin of the pusher (38). One end of the spring three (310) is fixedly connected to the pressing block (39), and the other end of the spring three (310) is fixedly connected to the top of the hollow shell (31).
7. A multinational universal adapter socket with a wide adaptability and high stability capacity-increasing structure according to claim 3, characterized in that: The bottom edge of the pressing block (39) is fixedly connected to a protective sleeve (311), and the bottom of the protective sleeve (311) is fixedly connected to the top of the hollow shell (31).