Travel converter

Abstract

The invention discloses a travel converter, which comprises a shell, a first plug, a limiting plate assembly and a plurality of second plugs, and is characterized in that the bottom surface of the shell is provided with a storage groove; the first plug is rotatably accommodated in the accommodating groove, and a stop block is arranged on the first plug; the second plug is telescopically accommodated in the shell along the first direction and comprises a movable frame, and pins and an operating piece which are respectively arranged on the movable frame, and the operating piece is provided with an operating head exposed out of the shell and a connecting part for connecting the operating head with the movable frame; the limiting plate assembly is arranged on the shell and comprises a plurality of plates arranged in a row, at least one plate can slide in the second direction, a sliding way with the variable width is formed between every two adjacent plates, the sliding ways and the second plugs are arranged in a one-to-one correspondence mode, and limiting areas allowing the connecting parts to penetrate through are formed in the upper portions of the sliding ways. A plate, close to the stop block, in the limiting plate assembly is provided with a matching part used for being matched with the stop block in a stopping mode, and the first direction is perpendicular to the second direction. The travel converter is compact and flat in structure.

Description

Technical Field

[0001] This invention relates to the field of portable socket technology, and more particularly to a travel adapter. Background Technology

[0002] Travel adapters are portable electronic products designed for international travel that adapt to different countries' socket standards. They enable quick switching between standard plugs such as US, Australian, British, and European plugs via a push-rod structure or extension components.

[0003] To prevent multiple plugs from extending simultaneously and affecting normal user operation, existing technologies often incorporate movable blocks inside the travel adapter. This allows the other plugs to be restricted in position when one plug is fully extended, preventing them from being extended or allowing them to extend only halfway (e.g., CN203983560U). However, these movable blocks require a significant amount of space in the center of the travel adapter, hindering its compact and flattened design. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a compact, flat travel converter.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a travel adapter, comprising a housing, a first plug, a limiting plate assembly, and a plurality of second plugs, wherein the bottom surface of the housing is provided with a storage groove; the first plug is rotatably stored in the storage groove, and a stop block is provided on the first plug; the second plugs are retractably stored in the housing along a first direction, and include a movable frame and pins and an operating component respectively provided on the movable frame, the operating component having an operating head exposed in the housing and a connecting part connecting the operating head and the movable frame; the limiting plate assembly is provided on the housing, and includes a plurality of plates arranged in a row, at least one plate being slidable along a second direction, and adjacent plates... A variable-width slide is formed between the slides, and each slide corresponds to a second plug. A limiting area is formed at the top of the slide for the connecting part to pass through. The plate near the stop block in the limiting plate assembly has a mating part for stopping with the stop block. The first direction is perpendicular to the second direction. When the first plug extends, the stop block reduces the sliding stroke margin of the limiting plate assembly. The lower width of each slide is smaller than the width of the connecting part of the corresponding operating member. When any second plug extends, the operating member of the second plug slides to the bottom of the corresponding slide. The lower width of the remaining slides is smaller than the width of the connecting part of the corresponding operating member. The mating part prevents the first plug from extending through the stop block.

[0006] The beneficial effects of this invention are as follows: by rotatably storing the first plug in the storage groove on the bottom surface of the housing and setting a stop block on its rotating shaft, and using a limiting plate assembly composed of multiple plates to form a variable-width slide, when the first plug rotates out, the stop block reduces the sliding stroke margin of the plates in the limiting plate assembly, so that the width of the lower part of any slide is less than the width of the connecting part of the corresponding operating member, thereby blocking all second plugs from extending. Conversely, when any second plug is fully extended, its operating member slides to the bottom of the slide, forcing the plate near the stop block to slide towards the stop block. This plate interferes with the rotation of the stop block, thereby preventing the first plug from rotating out. Correspondingly, the stop block stops the plate, and the limiting plate assembly cannot form another slide for the operating member to slide to the bottom, thereby preventing the remaining second plugs from extending.

[0007] This travel converter features a novel structure. The limiting plate assembly can be positioned close to the side wall of the housing, avoiding the problem of traditional movable blocks occupying a large space in the center of the housing. This allows for more efficient use of the internal space of the housing, facilitating a more compact and flatter structure for the travel converter. Furthermore, the longer axial plug can be used as the first plug, further reducing the overall height of the travel converter and making it even flatter. This achieves the technical effect of a compact and flat design while ensuring the reliability of the plug switching interlock function. Attached Figure Description

[0008] Figure 1 This is a structural diagram of the overall structure of the travel converter; Figure 2 A schematic diagram of the overall structure of the travel converter from another perspective; Figure 3 This is a structural diagram of the internal structure of a travel adapter (with the US / Australian standard plug extended). Figure 4 A schematic diagram of the internal structure of a travel adapter (with the UK standard plug extended). Figure 5 This is a structural diagram of the internal structure of a travel adapter (with the British standard plug, European standard plug, and American / Australian standard plug all in their retracted state). Figure 6 A schematic diagram of part of the structure of the travel converter; Figure 7 for Figure 6 Enlarged view of detail A in the middle; Figure 8 An exploded view of the US / Australian standard plug in a travel adapter; Figure 9 A schematic diagram of the internal structure of a travel adapter (with the UK standard plug extended). Figure 10 for Figure 9 A schematic diagram of the structure shown from another perspective.

[0009] Label Explanation: 1. Shell; 11. Storage slot; 12. Slide; 13. Front panel; 14. Back panel; 15. Second slot; 2. First plug; 21. Stop block; 22. Rotating shaft; 23. Pins of the first plug; 24. Base; 241. First slot; 3. Limiting plate assembly; 31. Plate; 311. Mating part; 312. Limiting protrusion; 3121. Second limiting part; 3122. Guide surface; 313. Reinforcing plate; 4. Second plug; 41. Movable frame; 411. Top block; 42. Pins of the second plug; 43. Operating component; 431. Operating head; 432. Connecting part; 4321. First part; 4322. Second part; 4323. First limiting part; 44. First elastic element; 45. Foot; 5. Slide; 51. Restriction zone; 6. Second elastic element; 7. Receiving slot; 8. Electrical socket; 9. Circuit board; 91. Electrical interface. Detailed Implementation

[0010] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0011] Please refer to Figures 1 to 4A travel adapter includes a housing 1, a first plug 2, a limiting plate assembly 3, and several second plugs 4. The bottom surface of the housing 1 has a storage groove 11. The first plug 2 is rotatably stored in the storage groove 11 and has a stop block 21. The second plugs 4 are retractably stored in the housing 1 along a first direction and include a movable frame 41 and pins and operating components 43 respectively disposed on the movable frame 41. The operating components 43 have an operating head 431 exposed in the housing 1 and a connecting portion 432 connecting the operating head 431 and the movable frame 41. The limiting plate assembly 3 is disposed on the housing 1 and includes several plates 31 arranged in a row. At least one plate 31 is slidable along a second direction, and a variable-width slide 5 is formed between adjacent plates 31. It is easily understood that the width of the slide 5... The slide 5 is set along the second direction, and the slide 5 is set one-to-one with the second plug 4. The upper part of the slide 5 forms a limiting area 51 for the connecting part 432 to pass through. The plate 31 of the limiting plate assembly 3 near the stop block 21 has a mating part 311 for stopping and engaging with the stop block 21. The first direction is perpendicular to the second direction. When the first plug 2 extends, the stop block 21 reduces the sliding stroke margin of the limiting plate assembly 3. The lower width of each slide 5 is smaller than the width of the connecting part 432 of the corresponding operating member 43. When any second plug 4 extends, the operating member 43 of the second plug 4 slides to the bottom of the corresponding slide 5. The lower width of the remaining slides 5 is smaller than the width of the connecting part 432 of the corresponding operating member 43. The mating part 311 prevents the first plug 2 from extending through the stop block 21.

[0012] As can be seen from the above description, the beneficial effects of the present invention are as follows: The travel converter has a novel structure, and the limiting plate assembly 3 can be set close to the side wall of the housing 1, avoiding the problem that the traditional movable block needs to occupy a large space in the center of the housing 1, so that the internal space of the housing 1 can be made more fully, which is conducive to the compactness and flatness of the travel converter structure. Moreover, the plug with a longer axial length can be used as the first plug 2, so that the overall height of the travel converter can be further reduced and flattened, thus achieving the technical effect of compact structure and flat design of the travel converter while ensuring the reliability of the plug switching interlock function.

[0013] Please refer to Figures 5 to 8Furthermore, the operating member 43 is retractably mounted on the movable frame 41 along a third direction. The connecting part 432 includes a first part 4321 and a second part 4322 connected together. The first part 4321 is connected to the operating head 431, and the second part 4322 is connected to the movable frame 41. The width of the first part 4321 along the second direction is smaller than the width of the second part 4322 along the second direction. The top surface of the second part 4322 has a first limiting part 4323. The plate 31 is provided with a limiting protrusion 312. The bottom end of the limiting protrusion 312 is a second limiting part 3121 for cooperating with the first limiting part 4323. The first direction, the second direction, and the third direction are perpendicular to each other. When any second plug 4 is extended, the first limiting part 4323 of the operating member 43 of the second plug 4 is located below the second limiting part 3121 of the corresponding limiting protrusion 312 to form a retraction stop along the first direction.

[0014] As described above, the stepped surface formed by the widening of the second part 4322 and the bottom end of the limiting protrusion 312 of the plate 31 constitute a retraction stop in the first direction, so that the second plug 4 can be locked and retracted when fully extended, preventing the pins 42 of the second plug from accidentally retracting into the housing due to accidental pushing or vibration. Thus, without adding an additional locking tongue, the self-holding of the extended state can be achieved by using the stepped contour of the operating part 43 itself and the limiting protrusion 312 of the plate 31, which improves the safety of use and the stability of the pin contact.

[0015] Please refer to Figure 7 Furthermore, the limiting protrusion 312 is located on the side or inner wall of the plate 31.

[0016] As described above, the limiting protrusion 312 is directly formed on the side or inner wall of the plate 31, so that the limiting protrusion 312 and the plate 31 move as a whole. Without the need for additional small parts, it can automatically complete the retraction and stop while the width of the slide 5 changes, which simplifies the assembly process and reduces the risk of jamming caused by the detachment of separate parts, and further improves the integration and reliability of the limiting plate assembly 3.

[0017] Please refer to Figure 8 Furthermore, the second plug 4 also includes a first elastic element 44, which contacts the operating element 43 and the movable frame 41 respectively.

[0018] As can be seen from the above description, the first elastic member 44 can prevent the operating member 43 from retracting unexpectedly, and ensure the reliability of the first limiting part 4323 and the second limiting part 3121 in retracting and stopping in the first direction.

[0019] Please refer to Figure 1 , Figure 3 , Figure 9 and Figure 10Furthermore, the first plug 2 is a European standard plug with a base 24, and the second plug 4 near the first plug 2 is a British standard plug. The pins on the movable bracket 41 of the British standard plug include a neutral pin and a live pin. The ground pin 45 of the British standard plug is rotatably connected to the base 24. It also includes a receiving groove 7 for accommodating the ground pin 45 of the British standard plug. The receiving groove 7 includes a first groove 241 provided on the base 24 and a second groove 15 provided on the housing 1. The first groove 241 communicates with the second groove 15.

[0020] As described above, the European standard plug's base 24 also serves as the rotating support for the British standard plug's foot 45. The first groove 241 and the second groove 15 are continuously opened on the base 24 and the housing 1 to form a space for the foot 45. This makes the component layout on the travel adapter more compact. While making the whole machine flat, the overall length can be made smaller, thereby greatly improving the portability of the travel adapter.

[0021] Please refer to Figure 6 and Figure 10 Furthermore, the movable bracket 41 of the British standard plug is provided with a top abutment block 411, which is provided corresponding to the second slot 15. The top abutment block 411 is used to push at least a portion of the foot 45 of the British standard plug out of the second slot 15.

[0022] As described above, during the extension of the British standard plug, the top block 411 on the movable bracket 41 will partially push the foot 45 out of the second groove 15. The user does not need to use their fingers to pry the foot 45 out of the second groove 15, which makes it convenient for the user to manually rotate the foot 45 and enhances the user experience.

[0023] Please refer to Figures 3 to 4 Furthermore, the housing 1 is provided with an electrical socket 8, which is located on the side of the second plug 4 away from the first plug 2. The housing 1 is provided with a circuit board 9 corresponding to the storage slot 11 area, and the circuit board 9 is electrically connected to the electrical socket 8, the first plug 2 and the second plug 4 respectively.

[0024] As can be seen from the above description, the first plug 2 in the storage state occupies little height space of the housing 1. The circuit board 9 is designed to correspond to the storage slot 11, which can make full use of the narrow space inside the housing 1. The staggered layout of the first plug 2, the second plug 4 and the electrical socket 8 avoids vertical stacking, thereby making the overall height of the device smaller and facilitating the flattening of the travel adapter.

[0025] Please refer to Figures 3 to 4 Furthermore, it also includes a second elastic member 6, which contacts the housing 1 and the plate 31 near the stop block 21.

[0026] As described above, the second elastic element 6 can drive the various plates 31 in the limiting plate assembly 3 to move closer together, thereby closing the lower part of the slide 5, reducing the probability of the second plug 4 extending unexpectedly, and enhancing the user experience.

[0027] Please refer to Figure 4 Furthermore, a reinforcing plate 313 is provided on the plate 31 near the stop block 21, the second elastic member 6 contacts the reinforcing plate 313, and the mating part 311 is located on the reinforcing plate 313.

[0028] As described above, the reinforcing plate 313 is integrally formed with the plate 31 during the injection molding stage. It not only bears the pushing force of the second elastic element 6, but also directly contacts the stop block 21 as the mating part 311, dispersing stress and reducing the risk of damage to the plate 31. Thus, the life of the plate 31 is improved by local thickening, so that the whole machine can meet the mechanical strength requirements of frequent switching while maintaining its thinness.

[0029] Please refer to Figure 1 Furthermore, the side wall of the housing 1 has a sliding groove 12 arranged along the first direction, the sliding groove 12 is arranged in a one-to-one correspondence with the second plug 4, and the connecting part 432 passes through the sliding groove 12.

[0030] As can be seen from the above description, the slide groove 12 on the side wall of the housing 1 is arranged along the first direction to provide linear guidance for the operating member 43, so that the operating head 431 always moves along the first direction during the pushing and pulling process, avoiding the operating member 43 from tilting and getting stuck. At the same time, the slide groove 12 corresponds to the slide rail 5 to form a double-layer guide structure, which is beneficial to improving the coaxiality and smoothness of the extension and retraction movement of the second plug 4.

[0031] Please refer to Figures 1 to 10 Embodiment 1 of the present invention is: a travel adapter for adapting to the socket standards of multiple countries.

[0032] Please refer to Figures 1 to 4The travel adapter includes a housing 1, a first plug 2, a limiting plate assembly 3, and several second plugs 4. The bottom surface of the housing 1 has a storage groove 11, in which the first plug 2 is rotatably stored. The first plug 2 has a stop block 21. The second plugs 4 are retractably stored within the housing 1 along a first direction. Each second plug 4 includes a movable frame 41 and pins and an operating component 43 respectively disposed on the movable frame 41. The operating component 43 has an operating head 431 exposed in the housing 1 and a connecting portion 432 connecting the operating head 431 and the movable frame 41. When the second plug 4 extends, the pins 42 of the second plug extend out of the housing 1. The limiting plate assembly 3 is disposed on the housing 1 and includes multiple plates 31 arranged in a row. At least one plate 31 is slidable along a second direction. The first direction is perpendicular to the second direction. Adjacent plates 31 form a variable-width slide rail 5, which is paired with each second plug 4. The slide 5 should be configured such that a limiting area 51 is formed on the upper part of the slide 5 for the connecting part 432 to pass through. When the second plug 4 is housed in the housing 1, the operating member 43 of the second plug 4 corresponds to the limiting area 51, and a portion of the connection is located in the limiting area 51. The plate 31 of the limiting plate assembly 3 near the stop block 21 has a mating part 311 for stopping and engaging with the stop block 21. When the first plug 2 extends, the stop block 21 reduces the sliding stroke margin of the limiting plate assembly 3. The lower width of each slide 5 is smaller than the width of the connecting part 432 of the corresponding operating member 43. When any second plug 4 extends, the operating member 43 of the second plug 4 slides to the bottom of the corresponding slide 5. The lower width of the remaining slides 5 is smaller than the width of the connecting part 432 of the corresponding operating member 43, thereby preventing the extension of other second plugs 4. The mating part 311 prevents the first plug 2 from extending through the stop block 21.

[0033] Please refer to Figure 1 The side wall of the housing 1 has a sliding groove 12 arranged along a first direction. The sliding groove 12 is arranged in a one-to-one correspondence with the second plug 4. The connecting part 432 passes through the sliding groove 12.

[0034] The front panel 13 and back panel 14 of the housing 1 both have sliding grooves arranged along the second direction. The storage groove 11 is provided on the back panel 14. The top end of the slidable plate 31 is located in the sliding groove on the front panel 13, and the bottom end of the plate 31 is located in the sliding groove on the back panel 14.

[0035] Please refer to Figures 3 to 4 In some embodiments, the stop block 21 extends along the length direction of the pivot 22 of the first plug 2. In this embodiment, the stop block 21 is located at the end of the pivot 22 of the first plug 2. Preferably, the stop block 21 is offset from the rotation center axis of the first plug 2 and is located close to the pin 23 of the first plug, so that the length dimension of the housing 1 along the second direction can be designed to be smaller.

[0036] In some embodiments, each of the plates 31 in the limiting plate assembly 3 can be slidably disposed, while referring to... Figure 4 In this embodiment, the plate 31 of the limiting plate assembly 3 that is far away from the stop block 21 is fixedly connected to the housing 1. At this time, the plate 31 can be considered as a local area of ​​the housing 1, and can be formed simultaneously during the injection molding process of the housing 1 component or the support component inside the housing 1. This can reduce the number of components of the travel converter and help control the manufacturing cost of the travel converter.

[0037] Please refer to Figures 5 to 8 To prevent the extended second plug 4 from retracting unexpectedly, in this embodiment, the operating member 43 is telescopically mounted on the movable frame 41 along a third direction. The connecting part 432 includes a first part 4321 and a second part 4322 connected together. The first part 4321 is connected to the operating head 431, and the second part 4322 is connected to the movable frame 41. The width of the first part 4321 along the second direction is smaller than the width of the second part 4322 along the second direction. The top surface of the second part 4322 has a first limiting part 4323. The plate 31 is provided with a limiting protrusion 312. The bottom end of the limiting protrusion 312 is a second limiting part 3121 for cooperating with the first limiting part 4323. The first direction, the second direction, and the third direction are perpendicular to each other. When any second plug 4 is extended, the first limiting part 4323 of the operating member 43 of the second plug 4 is located below the second limiting part 3121 of the corresponding limiting protrusion 312 to form a retraction stop along the first direction. Preferably, the first part 4321 and the second part 4322 form a convex structure, so that the second part 4322 can abut against the limiting protrusions 312 on both sides of the slide 5 to balance the force on the connecting part 432 and ensure the retraction stop effect along the first direction.

[0038] In some embodiments, the operating element 43 is tightly fitted with the movable frame 41, and their relative positions are maintained by friction. However, for user convenience, please refer to... Figures 5 to 8 In this embodiment, the second plug 4 further includes a first elastic element 44, which contacts the operating member 43 and the movable frame 41 respectively to drive the operating member 43 away from the movable frame 41 in a third direction. The first elastic element 44 includes, but is not limited to, springs and sheet springs. When the connecting part 432 slides to the bottom end of the slide rail 5, the first elastic element 44 drives the second part 4322 to move outward and remain there, thereby keeping the first limiting part 4323 on the second part 4322 below the second limiting part 3121 of the limiting protrusion 312 to maintain the retraction stop in the first direction.

[0039] Please refer to Figure 7In other embodiments, the limiting protrusion 312 is located on the side of the plate 31, and the gap between the limiting protrusions 312 on two adjacent plates 31 is the slide rail 5. In this embodiment, the limiting protrusion 312 is located on the inner sidewall of the plate 31. To allow the plate 31 to slide smoothly under the action of the operating member 43, it is preferable that the top of the limiting protrusion 312 is provided with a guide surface 3122. The guide surface 3122 is a slope or an arc surface, and the guide surface 3122 is used to contact the second part 4322 to guide the operating member 43 to retract inward. In other embodiments, the guide surface 3122 can also be provided on the second part 4322.

[0040] Please refer to Figure 3 , Figure 4 , Figure 6 In some embodiments, the travel converter further includes a second elastic element 6, which contacts the housing 1 and the plate 31 near the stop block 21. The second elastic element 6 is used to bring two adjacent plates 31 in the limiting plate assembly 3 closer together. After the two adjacent plates 31 come into contact with each other, the lower part of the slide 5 between them closes. The connecting part 432 of the operating member 43 will remain within the limiting area 51 when it is not subjected to a large external force, which greatly reduces the risk of the second plug 4 sliding unexpectedly in the first direction. Moreover, the setting of the second elastic element 6 can reduce the processing accuracy requirements of the plate 31, which is conducive to controlling the manufacturing cost of the travel converter. More importantly, when one of the second plugs 4 is extended, the second elastic element 6 drives the plates 31 to move closer together, which can prevent the plates 31 from sliding unexpectedly and causing the second limiting part 3121 to misalign with the first limiting part 4323, thus causing the retraction stop to fail.

[0041] Please refer to Figure 4 In some embodiments, a reinforcing plate 313 is provided on the plate 31 near the stop block 21, the second elastic member 6 contacts the reinforcing plate 313, and the mating part 311 is located on the reinforcing plate 313.

[0042] Please refer to Figure 1 , Figure 3 , Figure 5 , Figure 9 and Figure 10In this embodiment, there are two second plugs 4, one of which is a British standard plug and the other is an American / Australian standard plug. The first plug 2 is a European standard plug with a base 24. The second plug 4 near the first plug 2 is a British standard plug. The pins on the movable bracket 41 of the British standard plug include a neutral pin and a live pin. The ground pin 45 of the British standard plug is rotatably connected to the base 24. It also includes a receiving groove 7 for accommodating the ground pin 45 of the British standard plug. The receiving groove 7 includes a first groove 241 provided on the base 24 and a second groove 15 provided on the housing 1. The first groove 241 communicates with the second groove 15.

[0043] Please refer to Figure 1 , Figure 5 and Figure 10 In one or more embodiments, the movable bracket 41 of the British standard plug is provided with a top abutment block 411, which is disposed corresponding to the second slot 15. The top abutment block 411 is used to push at least a portion of the pin 45 of the British standard plug out of the second slot 15. Specifically, during the extension of the second plug 4, the top abutment block 411 contacts and drives the pin 45 of the British standard plug to rotate as the second plug 4 continues to slide, so that at least a portion of the pin 45 of the British standard plug is dislodged from the second slot 15. Subsequently, the user can easily extend the pin 45 of the British standard plug by manually rotating the dislodged portion of the pin 45 of the British standard plug.

[0044] Please refer to Figures 1 to 5 The housing 1 is provided with an electrical socket 8, which is used to connect to the plug of a user-supplied electrical appliance. To optimize the layout of the internal components of the travel adapter, the electrical socket 8 is located on the side of the second plug 4 away from the first plug 2. A circuit board 9 is provided inside the housing 1 corresponding to the storage slot 11 area. That is, the circuit board 9 is spatially stacked with the first plug 2 in the storage state in a first direction. The circuit board 9 is electrically connected to the electrical socket 8, the first plug 2, and the second plug 4. In some embodiments, the circuit board 9 is provided with an electrical interface 91, which includes, but is not limited to, a USB interface, a Type-C interface, etc.

[0045] The structural principle of this travel converter is briefly described below: When the first plug 2 and each of the second plugs 4 are in the retracted state, the first plug 2 is located in the storage groove 11, and the second plug 4 is stored in the housing 1. Under the action of the second elastic member 6, the sides of two adjacent plates 31 in the limiting plate assembly 3 are in contact with each other, and the lower part of each of the slides 5 is in a closed state (0 gap) or a partially closed state (width is less than the width of the connecting part 432 of the operating member 43). The connecting part 432 of the operating member 43 of the second plug 4 is in the limiting area 51. The operating member 43 of the second plug 4 cannot slide to the bottom of the slide 5 under the action of gravity or only a little external force. At the same time, without specifically removing the first plug 2 from the storage groove 11, the first plug 2 can always remain in the storage groove 11. And at this time, the distance between the stop block 21 and the plate 31 next to it is greater than or equal to the width of the connecting part 432 in the operating member 43.

[0046] When the user rotates the first plug 2 to extend it, the distance between the stop block 21 and the plate 31 next to it decreases and becomes less than the width of the connecting part 432 in the operating member 43, thereby preventing the second plug 4 from extending.

[0047] During the process of the user sliding the second plug 4 to extend it, the connecting part 432 of the operating member 43 of the second plug 4 overcomes the elastic force of the second elastic member 6 and opens the two mutually abutting plates 31, causing the lower part of the slide 5 to turn into an open state (the width is equal to the width of the connecting part 432 of the operating member 43), thereby allowing the connecting part 432 to slide to the bottom of the slide 5, and the second plug 4 to reach the fully extended state; during this process, the second part 4322 of the connecting part 432 first due to the guide surface 3122 The device retracts due to resistance and guidance, then slides and rubs against the limiting protrusion 312. Finally, when it slides to the bottom of the slide 5, it moves outward along the third direction under the action of the first elastic member 44, so that the first limiting part 4323 is located below the second limiting part 3121 of the limiting protrusion 312, forming a retraction stop along the first direction. At this time, there is zero distance between the stop part and the mating part 311, or the distance between the stop part and the mating part 311 is less than the clearance distance required for the stop part to rotate 90°, thereby preventing the first plug 2 from fully extending.

[0048] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A travel converter, characterized in that, include The casing has a storage slot on the bottom surface; The first plug is rotatably stored in the storage slot, and a stop block is provided on the first plug; Several second plugs are retractably housed in the housing along a first direction. Each plug includes a movable frame and pins and operating components respectively disposed on the movable frame. The operating components have an operating head exposed in the housing and a connecting part that connects the operating head and the movable frame. A limiting plate assembly is disposed on the housing and includes a plurality of plates arranged in a row. At least one plate is slidable along a second direction perpendicular to the first direction. A variable-width slide is formed between two adjacent plates. The slide is provided in a one-to-one correspondence with the second plug. A limiting area is formed on the upper part of the slide for the connecting part to pass through. The plate in the limiting plate assembly near the stop block has a mating part for stopping and engaging with the stop block. When the first plug extends, the stop block reduces the sliding travel margin of the limiting plate assembly, and the lower width of each slide is less than the width of the connecting part of the corresponding operating member; when any second plug extends, the operating member of the second plug slides to the bottom of the corresponding slide, and the lower width of the remaining slides is less than the width of the connecting part of the corresponding operating member, and the mating part prevents the first plug from extending by the stop block.

2. The travel converter according to claim 1, characterized in that, The operating component is retractably mounted on the movable frame along a third direction. The connecting part includes a first part and a second part connected together. The first part is connected to the operating head, and the second part is connected to the movable frame. The width of the first part along the second direction is smaller than the width of the second part along the second direction. The top surface of the second part has a first limiting part. The plate has a limiting protrusion. The bottom end of the limiting protrusion is a second limiting part for cooperating with the first limiting part. The first direction, the second direction, and the third direction are perpendicular to each other. When any second plug is extended, the first limiting part of the operating component of the second plug is located below the second limiting part of the corresponding limiting protrusion to form a retraction stop along the first direction.

3. The travel converter according to claim 2, characterized in that, The limiting protrusion is located on the side or inner wall of the plate.

4. The travel converter according to claim 2, characterized in that, The second plug also includes a first elastic element, which contacts the operating element and the movable frame respectively.

5. The travel converter according to claim 1, characterized in that, The first plug is a European standard plug with a base, and the second plug near the first plug is a British standard plug. The pins on the movable bracket of the British standard plug include a neutral pin and a live pin. The ground pin of the British standard plug is rotatably connected to the base. The plug also includes a receiving groove for accommodating the ground pin of the British standard plug. The receiving groove includes a first groove on the base and a second groove on the housing. The first groove communicates with the second groove.

6. The travel converter according to claim 5, characterized in that, The movable bracket of the British standard plug is provided with a top abutment block, which is arranged corresponding to the second slot. The top abutment block is used to push at least a portion of the bottom part of the British standard plug out of the second slot.

7. The travel converter according to claim 5, characterized in that, The housing is provided with an electrical socket, which is located on the side of the second plug away from the first plug. A circuit board is provided inside the housing corresponding to the storage slot area, and the circuit board is electrically connected to the electrical socket, the first plug and the second plug respectively.

8. The travel converter according to claim 1, characterized in that, It also includes a second elastic element, which contacts the housing and the plate near the stop block, respectively.

9. The travel converter according to claim 8, characterized in that, A reinforcing plate is provided on the plate near the stop block, the second elastic member contacts the reinforcing plate, and the mating part is located on the reinforcing plate.

10. The travel converter according to claim 1, characterized in that, The side wall of the housing has a sliding groove arranged along a first direction, and the sliding groove is arranged in a one-to-one correspondence with the second plug, and the connecting part passes through the sliding groove.

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