Travel converter

Abstract

The invention discloses a travel converter, which comprises a shell, a plug bush, an insulating bracket and a push handle, two opposite sides of the housing are respectively provided with a through hole and a jack for plugging an external plug. The plug bush is telescopically mounted at the through hole along the thickness direction of the shell; the insulating bracket is arranged in the shell in a sliding manner along the thickness direction of the shell and is in sliding connection with the plug bush; one side of the insulating support is provided with two round-head metal pins, and the other side of the insulating support is arranged opposite to the jacks and is provided with an avoiding gap. The push handle is connected with the insulating bracket; according to the utility model, the avoidance gap is arranged at one side, which is opposite to the jack, of the insulating bracket, so that the plugging area of the jack and the insulating bracket can be at least partially overlapped in the thickness direction of the shell, and therefore, on the premise that the thickness of the shell does not need to be increased, the space utilization rate in the shell is improved; and meanwhile, the limitation that the European standard plug must be arranged in the edge area of the shell is eliminated, the layout freedom degree of the jacks and the round-head metal pins is increased, and the portability and the functional integrity of the travel converter are considered.

Description

Technical Field

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

[0002] A travel adapter is a portable power adapter used to convert one power plug standard to another, widely used in international travel. A typical multi-functional travel adapter integrates various plug modules, such as European (Type C), British (Type G), and American (Type A / B), to accommodate different country or region socket standards; at the same time, the adapter also has sockets for external electronic devices, such as AC power sockets and USB interfaces.

[0003] Because travel adapters need to be compatible with multiple plug specifications, each plug module is typically designed as a retractable structure, stored inside the adapter's housing when not in use to reduce size and facilitate portability. For the long prongs of European plugs, existing technology usually employs a vertically retractable structure, which mainly includes a socket (European standard socket), an insulating bracket, a push handle, and two round metal prongs. The two round metal prongs are fixed to the insulating bracket, and the push handle is connected to the insulating bracket and protrudes outside the travel adapter's housing. The insulating bracket is slidably installed inside the housing and slidably connected to the socket, which is also slidably installed within the housing. In use, pushing the push handle causes the insulating bracket to extend the socket vertically, exposing the round metal prongs for insertion into the socket; to retract, pushing the push handle in the opposite direction causes the insulating bracket to retract the socket back into the housing.

[0004] The converter's sockets are designed for the insertion of plugs from external electronic devices. The sockets, their corresponding conductive terminals, and supporting structures form a insertion area of ​​a certain depth along the converter's thickness. Both the vertical expansion space of the aforementioned European standard plug and the insertion area of ​​the socket occupy space along the converter's thickness, creating the following technical contradiction: If the European standard plug and socket are not misaligned along the housing's thickness, the overall housing thickness must simultaneously accommodate the vertical expansion space of the socket and the insertion area of ​​the socket, significantly increasing the converter's thickness and making it difficult to meet portability requirements; if a misaligned arrangement is used to avoid increasing thickness, the placement of the European standard plug must avoid the area where the socket is located, and vice versa. Both design freedoms are severely limited. The European standard plug can typically only be placed on the edge of the converter, resulting in ineffective use of space in the central area, reduced internal space utilization, and the socket layout is also restricted by the need to avoid the European standard plug. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a travel adapter that improves the utilization of internal space and increases the flexibility of the layout of sockets and plugs without increasing the overall thickness of the housing, thereby balancing the portability and functional integrity of the travel adapter.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a travel adapter, comprising... The housing has through holes and sockets for external plugs on opposite sides. A sleeve is retractably installed at the through hole along the thickness direction of the housing; An insulating bracket is slidably disposed within the housing along the thickness direction of the housing and slidably connected to the socket; one side of the insulating bracket is provided with two round-headed metal prongs, and the other side is arranged opposite to the socket and is provided with a clearance notch; A push handle, connected to the insulating bracket and exposed outside the housing, is used to drive the insulating bracket and the socket to extend and retract relative to the housing.

[0007] The beneficial effects of the present invention are as follows: The travel adapter provided by the present invention sets the clearance notch on the side of the insulating bracket facing the socket, so that the plugging area of ​​the socket and the insulating bracket can at least partially overlap in the thickness direction of the shell. This improves the space utilization rate inside the shell without increasing the shell thickness. At the same time, it removes the restriction that the European standard plug must be placed in the edge area of ​​the shell, increases the layout freedom of the socket and the round metal pin, and takes into account the portability and functional integrity of the travel adapter. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the travel adapter according to Embodiment 1 of the present invention (European plug in fully retracted state). Figure 2 This is a schematic diagram of the travel adapter according to Embodiment 1 of the present invention (European plug in a semi-retracted state). Figure 3 This is a schematic diagram of the travel adapter according to Embodiment 1 of the present invention (with the European plug fully extended). Figure 4 This is a cross-sectional structural diagram of the travel converter according to Embodiment 1 of the present invention; Figure 5 This is an exploded view of the travel converter according to Embodiment 1 of the present invention; Figure 6 This is an exploded view of the European standard plug according to Embodiment 1 of the present invention (after hiding the elastic reset member). Figure 7 This is an exploded view of the European standard plug according to another perspective of Embodiment 1 of the present invention (after hiding the elastic reset member). Figure 8 This is a cross-sectional structural diagram of the travel converter according to Embodiment 2 of the present invention; Figure 9 This is an exploded view of the European standard plug according to Embodiment 2 of the present invention (after hiding the elastic reset member); Figure 10 This is an exploded view of the European standard plug according to another perspective of Embodiment 2 of the present invention (after hiding the elastic reset member). Figure 11 This is a schematic diagram of the structure of the round-headed metal pin in Embodiment 2 of the present invention.

[0009] Label Explanation: 1. Housing; 11. Perforation; 12. Insertion hole; 13. Conductive terminal; 14. Locking protrusion; 141. First locking end; 142. Second locking end; 2. Insert sleeve; 21. First abutment part; 22. Second abutment part; 23. Guide protrusion; 24. Recessed notch; 3. Insulating bracket; 31. Round-headed metal pin; 32. Recessed notch; 321. First notch; 322. Second notch; 33. Push handle; 331. Locking part; 332. Anti-disengagement buckle; 333. Guide insert; 34. Conductive piece; 341. First connecting part; 342. Extension part; 343. Second connecting part; 35. Abutment protrusion; 36. Guide groove; 4. Mounting bracket; 41. Isolation part. 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 11 A travel adapter includes a housing 1, a sleeve 2, an insulating bracket 3, and a push handle 33. The housing 1 has a through hole 11 and a socket 12 for inserting an external plug on opposite sides. The sleeve 2 is telescopically mounted at the through hole 11 along the thickness direction of the housing 1. The insulating bracket 3 is slidably disposed inside the housing 1 along the thickness direction of the housing 1 and slidably connected to the sleeve 2. The insulating bracket 3 has two round-headed metal prongs 31 on one side and a notch 32 on the other side opposite the socket 12. The push handle 33 is connected to the insulating bracket 3 and exposed outside the housing 1, used to drive the insulating bracket 3 and the sleeve 2 to extend and retract relative to the housing 1.

[0012] As can be seen from the above description, the beneficial effects of the present invention are as follows: by setting the clearance notch 32 on the side of the insulating bracket 3 facing the socket 12, the insertion area of ​​the socket 12 and the insulating bracket 3 can at least partially overlap in the thickness direction of the housing 1, thereby improving the space utilization rate inside the housing 1 without increasing the thickness of the housing 1. At the same time, it removes the restriction that the European plug must be arranged in the edge area of ​​the housing 1, increases the layout freedom of the socket 12 and the round metal pins 31, and takes into account the portability and functional integrity of the travel adapter.

[0013] Furthermore, the width of the clearance notch 32 is less than the distance between the two round-headed metal pins 31, and the clearance notch 32 extends between the two round-headed metal pins 31.

[0014] As can be seen from the above description, by setting the width of the clearance notch 32 to be less than the distance between the two round-headed metal pins 31 and extending it to the distance between the two round-headed metal pins 31, a deeper insertion depth can be provided for the socket 12, so that the socket 12 can accommodate the insertion needs of longer pins or other objects.

[0015] Furthermore, the width of the clearance notch 32 is greater than the distance between the two round-headed metal pins 31. The insulating bracket 3 is also provided with two conductive plates 34 connecting the round-headed metal pins 31. Each conductive plate 34 includes a first connecting portion 341, an extension portion 342, and a second connecting portion 343 connected in sequence. The first connecting portion 341 is connected to the round-headed metal pins 31. The extension portion 342 extends along the extension direction of the sleeve 2. The second connecting portion 343 is used to connect to the conductive terminal 13 inside the housing 1. The distance between the extension portions 342 of the two conductive plates 34 is greater than the distance between the two round-headed metal pins 31. The clearance notch 32 is located between the extension portions 342 of the two conductive plates 34.

[0016] As described above, by setting the width of the clearance notch 32 to be greater than the distance between the two round-headed metal pins 31, and by placing the clearance notch 32 between the extensions 342 of the two conductive plates 34, the clearance notch 32 can obtain a larger clearance space, thereby adapting to the arrangement requirements of larger sizes or more numbers of sockets 12. At the same time, by extending the extensions 342 of the conductive plates 34 along the extension and retraction direction of the socket 2 and increasing the distance, the electrical connection path between the round-headed metal pins 31 and the conductive terminals 13 inside the housing 1 is optimized, which not only meets the functional requirements of electrical connection, but also provides sufficient arrangement space for the clearance notch 32.

[0017] Furthermore, the extension 342 is embedded within the insulating bracket 3.

[0018] As described above, by embedding the extension 342 into the insulating bracket 3, the extension 342 of the conductive sheet 34 is covered by the insulating material of the insulating bracket 3, thereby improving the bonding strength between the conductive sheet 34 and the insulating bracket 3, preventing the conductive sheet 34 from shifting or deforming during the extension and retraction of the sleeve 2, and enhancing the flatness of the surface of the insulating bracket 3, avoiding safety hazards caused by the exposed conductive sheet 34, and improving the electrical safety performance of the product.

[0019] Furthermore, the sleeve 2 is provided with a first contact portion 21 and a second contact portion 22, and the insulating bracket 3 is provided with a contact protrusion 35; when the round-headed metal pin 31 extends out of the sleeve 2, the contact protrusion 35 contacts the first contact portion 21; when the round-headed metal pin 31 retracts into the sleeve 2, the contact protrusion 35 contacts the second contact portion 22.

[0020] As described above, when the push handle 33 is pushed, causing the insulating bracket 3 to fully extend the round-headed metal pin 31 from the sleeve 2, the first extension / retraction stroke is completed. At this time, only the round-headed metal pin 31 is exposed outside the sleeve 2. Continuing to push the push handle 33, the sleeve 2 moves with the insulating bracket 3 through the contact between the contact protrusion 35 and the first contact part 21, until the sleeve 2 fully extends from the perforation 11, completing the second extension / retraction stroke. Correspondingly, when the push handle 33 is pushed, causing the insulating bracket 3 to fully retract the round-headed metal pin 31... When the insert is inside the sleeve 2, the first extension stroke is completed. At this time, the sleeve 2 is still exposed outside the through hole 11. Continue to push the push handle 33. Through the contact between the abutment protrusion 35 and the second contact part 22, the sleeve 2 moves with the insulating bracket 3 until the sleeve 2 is completely retracted into the through hole 11, completing the second extension stroke. By utilizing the contact action between the abutment protrusion 35 and the first contact part 21 or the second contact part 22, the mechanical linkage between the insulating bracket 3 and the sleeve 2 is realized, ensuring the continuity of the movement of the round metal pin 31 and the sleeve 2.

[0021] Furthermore, the insert 2 is provided with a guide protrusion 23, and the insulating bracket 3 is provided with a guide groove 36 that slides in cooperation with the guide protrusion 23; or, the insert 2 is provided with a guide groove 36, and the insulating bracket 3 is provided with a guide protrusion 23 that slides in cooperation with the guide groove 36.

[0022] As described above, by setting a sliding fit structure of guide protrusion 23 and guide groove 36 between the socket 2 and the insulating bracket 3, a precise guiding constraint is provided for the sliding movement of the insulating bracket 3 relative to the socket 2. This ensures the linearity and stability of the extension and retraction movement of the insulating bracket 3 and the round metal pin 31, avoids the socket 2 from deflecting or getting stuck during the extension and retraction process, and improves the smoothness of operation and structural reliability of the product.

[0023] Furthermore, it also includes a mounting bracket 4, which is disposed inside the housing 1 and has an isolation portion 41. The isolation portion 41 is located between the insertion hole 12 and the insulating bracket 3 and extends into the clearance notch 32.

[0024] As described above, by providing a mounting bracket 4 with an isolation part 41 inside the housing 1 and extending the isolation part 41 into the clearance notch 32, a physical isolation barrier is formed between the socket 12 and the insulating bracket 3 using the isolation part 41. This prevents the external plug from contacting and interfering with the insulating bracket 3 or the round metal pin 31 when it is inserted into the socket 12. At the same time, it enhances the support strength of the internal structure of the housing 1 and improves the structural stability and safety of the product.

[0025] Furthermore, the push handle 33 is provided with a locking part 331, which is slidably mounted on the insulating bracket 3 in a direction perpendicular to the extension and retraction direction of the sleeve 2. The insulating bracket 3 is also provided with an elastic reset member connected to the locking part 331. The housing 1 is provided with a locking protrusion 14 extending along the extension and retraction direction of the sleeve 2. The opposite ends of the locking protrusion 14 are a first locking end 141 and a second locking end 142, respectively. When the sleeve 2 extends out of the through hole 11, the locking part 331 abuts against the first locking end 141. When the sleeve 2 retracts into the through hole 11, the locking part 331 abuts against the second locking end 142.

[0026] As described above, by providing a locking part 331 on the push handle 33 that can slide in a direction perpendicular to the extension and retraction direction of the sleeve 2, and cooperating with the elastic reset member and the locking protrusion 14 in the housing 1, the self-locking function of the sleeve 2 in the extended and retracted positions is realized by the contact action between the locking part 331 and the first locking end 141 or the second locking end 142. This prevents the sleeve 2 from accidentally sliding in the non-operational state, improves the safety and stability of the product, and at the same time, the elastic reset member ensures that the locking part 331 can automatically reset to the locked position, simplifying the user's operation steps and improving the ease of use.

[0027] Furthermore, the locking part 331 is also provided with an anti-disengagement buckle 332 that engages with the insulating bracket 3.

[0028] As described above, by providing a locking buckle 332 on the locking part 331 that engages with the insulating bracket 3, the sliding stroke of the locking part 331 relative to the insulating bracket 3 is limited by the engagement of the locking buckle 332 with the insulating bracket 3, thereby preventing the locking part 331 from falling off the insulating bracket 3 during the sliding process, ensuring the reliability of the connection between the locking part 331 and the insulating bracket 3, and improving the assembly stability and long-term reliability of the locking structure.

[0029] Furthermore, the locking part 331 is also provided with a guide insert 333 that is slidably connected to the insulating bracket 3.

[0030] As described above, by providing a guide plate 333 that is slidably connected to the insulating bracket 3 on the locking part 331, the sliding engagement between the guide plate 333 and the insulating bracket 3 provides additional guiding constraints for the sliding movement of the locking part 331 relative to the insulating bracket 3, thereby enhancing the stability and accuracy of the sliding movement of the locking part 331, preventing the locking part 331 from deviating or shaking during the sliding process, and improving the operational reliability and service life of the locking structure.

[0031] Please refer to Figures 1 to 7 Embodiment 1 of the present invention is as follows: A travel adapter includes a housing 1 and a European standard plug; the European standard plug includes a socket 2, an insulating bracket 3, and a push handle 33; the housing 1 has a through hole 11 and a socket 12 for inserting an external plug on opposite sides; the socket 2 is telescopically installed at the through hole 11 along the thickness direction of the housing 1; the insulating bracket 3 is slidably disposed inside the housing 1 along the thickness direction of the housing 1 and is slidably connected to the socket 2; one side of the insulating bracket 3 has two round-headed metal pins 31, which can be inserted; the other side is arranged opposite to the socket 12 and has a clearance notch 32; the push handle 33 is connected to the insulating bracket 3 and exposed outside the housing 1, and is used to drive the insulating bracket 3 and the socket 2 to extend and retract relative to the housing 1.

[0032] For specific details, please refer to... Figure 1 When the European standard plug is fully retracted, the socket 2 is located within the perforation 11 and its top is flush with the top plane of the housing 1, and the round metal prongs 31 are retracted into the opening of the socket 2. Please refer to... Figure 2 When the European standard plug is in a semi-retracted state, the round metal prongs 31 are exposed outside the socket 2, while the socket 2 remains retracted within the through hole 11; please refer to Figure 3 When the European standard plug is in its fully extended state, the socket 2 and the round metal pin 31 are both exposed outside the housing 1.

[0033] It should be noted that the housing 1 refers to the external encapsulation structure of the travel converter, used to house and protect the internal electrical components. It is typically made of insulating material and has two opposing sides. One side has a through-hole 11 for the extension and retraction of the sleeve 2, and the other side has a socket 12 for the insertion of an external plug. The through-hole 11 refers to a through-hole structure on one side of the housing 1, allowing the sleeve 2 to pass through and achieve extension and retraction. Its shape and size are adapted to the outer contour of the sleeve 2. The socket 12 refers to an interface structure on the other side of the housing 1, used for the insertion of a plug from an external electronic device to establish an electrical connection. The sleeve 2 refers to a hollow sleeve-like structure that can move along the thickness direction of the housing 1, used to house and guide the extension and retraction of the insulating support 3 and the round-headed metal pins 31. It is typically made of insulating material and has an outer periphery that slides with the through-hole 11 of the housing 1. The insulating support 3 refers to a structure made of insulating material... The support structure, made of a certain material, is used to fix the round metal pins 31 and form a sliding fit with the socket 2, while realizing the force transmission between the push handle 33 and the socket 2. It is set inside the housing 1 and slides along the thickness direction. The round metal pins 31 refer to cylindrical conductive pins that conform to the European plug standard. They are usually set in pairs and are used to insert into the corresponding standard socket to obtain power. One end is fixed to the insulating bracket 3, and the other end is a free end. The clearance notch 32 refers to the recessed area opened on the surface of the insulating bracket 3, which is used to provide clearance space for the insertion depth of the socket 12 extending into the housing 1, so that the insulating bracket 3 can partially overlap with the socket 12 in the thickness direction without structural interference. The push handle 33 refers to the operating part connected to the insulating bracket 3 and exposed outside the housing 1, which is used by the user to apply pushing or pulling force to drive the insulating bracket 3 and the socket 2 to retract.

[0034] Please combine Figure 4In this embodiment, the width of the clearance notch 32 is less than the distance between the two round-headed metal pins 31, and the clearance notch 32 extends between the two round-headed metal pins 31. The round-headed metal pins 31 are electrically connected to the conductive terminals 13 in the housing 1 through the conductive sheet 34 embedded in the insulating bracket 3. The width of the clearance notch 32 refers to the opening width of the clearance notch 32 in the direction facing the socket 12, and the distance between the round-headed metal pins 31 refers to the distance between the outer side walls of the two round-headed metal pins 31 that are close to each other. The extension direction of the clearance notch 32 is the same as the extension direction of the sleeve 2. In this way, a deeper insertion depth can be provided for the socket 12, so that the socket 12 can accommodate the insertion needs of longer pins or other objects (such as fuses). Specifically, in this embodiment, the socket 12 of the housing 1 corresponding to the clearance notch 32 is used to insert the grounding pin. It is understood that since the length of the grounding pin of various plug specifications (such as British standard plugs) is relatively large, the requirement for the insertion depth of the socket 12 is also high. In this embodiment, the clearance notch 32 extends along the thickness direction of the sleeve 2 to the space between the two round metal pins 31, which not only avoids the risk of interference with the round metal pins 31, but also increases the insertion depth of the socket 12, which can meet the insertion requirements of other plug specifications (such as British standard plugs) with columnar grounding pins. It can be used as a grounding pin insertion hole to realize the grounding function, improving the reuse efficiency of the internal space of the housing 1 and the compatibility of the product.

[0035] Please combine Figure 4 and Figure 5 The travel adapter also includes a mounting bracket 4, which is disposed inside the housing 1 and has an isolation portion 41. The isolation portion 41 is located between the socket 12 and the insulating bracket 3 and extends into the clearance notch 32. Specifically, the mounting bracket 4 is an auxiliary support structure fixed inside the housing 1, used for installing and positioning internal components (such as conductive terminals 13), and is made of insulating material. The isolation portion 41 is a plate-like or wall-like structure extending from the mounting bracket 4 toward the clearance notch 32, used to form a physical isolation between the socket 12 and the insulating bracket 3.

[0036] Please combine Figure 6The insert 2 has a guide protrusion 23 inside, and the insulating bracket 3 has a guide groove 36 that slides with the guide protrusion 23. The guide protrusion 23 is a strip-shaped or track-shaped protrusion structure set on the inner surface of the insert 2, which is used to cooperate with the corresponding guide groove 36 to achieve sliding guidance. The guide groove 36 is a groove structure set on the surface of the insulating bracket 3, which is used to accommodate the guide protrusion 23 and allow it to slide in a specific direction. In this way, precise guiding constraints are provided for the sliding movement of the insulating bracket 3 relative to the insert 2, thereby ensuring the linearity and stability of the extension and retraction movement of the round-headed metal pin 31 driven by the insulating bracket 3, avoiding the insert 2 from deflection or jamming during extension and retraction, and improving the smoothness of product operation and structural reliability.

[0037] Of course, in some other embodiments, a guide groove 36 may be provided in the sleeve 2, and a guide protrusion 23 that slides with the guide groove 36 may be provided in the insulating bracket 3.

[0038] Please combine Figure 7 In this embodiment, the sleeve 2 is provided with a first contact portion 21 and a second contact portion 22, and the insulating bracket 3 is provided with a contact protrusion 35; the contact protrusion 35 is a protrusion structure formed on the outer side wall of the insulating bracket 3, and when the insulating bracket 3 slides, the contact protrusion 35 slides with the insulating bracket 3; the first contact portion 21 and the second contact portion 22 are both contact ends formed on the sleeve 2.

[0039] Specifically, when the push handle 33 is pushed, causing the insulating bracket 3 to fully extend the round-headed metal pin 31 from the socket 2, the first extension / retraction stroke is completed. At this time, only the round-headed metal pin 31 is exposed outside the socket 2 (e.g., Figure 2 As shown), continue pushing the push handle 33. Through the contact between the contact protrusion 35 and the first contact part 21, the insert 2 moves with the insulating bracket 3 until the insert 2 is fully extended from the perforation 11 (as shown). Figure 3 As shown), the second extension stroke is completed; correspondingly, when the push handle 33 is pushed so that the insulating bracket 3 drives the round metal pin 31 to fully retract into the sleeve 2, the first extension stroke is completed, while the sleeve 2 is still exposed outside the through hole 11. Continuing to push the push handle 33, the sleeve 2 moves with the insulating bracket 3 through the contact between the contact protrusion 35 and the second contact part 22, until the sleeve 2 is fully retracted into the through hole 11, completing the second extension stroke. At this time, both the round metal pin 31 and the sleeve 2 are retracted (as shown). Figure 1 (As shown); by utilizing the contact action between the contact protrusion 35 and the first contact part 21 or the second contact part 22, the mechanical linkage between the insulating bracket 3 and the socket 2 is realized, ensuring the continuity of movement between the round metal pin 31 and the socket 2.

[0040] Please combine Figure 4 , Figure 6 and Figure 7 The push handle 33 is provided with a locking part 331, which is slidably mounted on the insulating bracket 3 in a direction perpendicular to the extension and retraction direction of the sleeve 2. The insulating bracket 3 is also provided with an elastic reset member connected to the locking part 331. The housing 1 is provided with a locking protrusion 14 extending along the extension and retraction direction of the sleeve 2. The opposite ends of the locking protrusion 14 are a first locking end 141 and a second locking end 142, respectively. When the sleeve 2 extends out of the through hole 11, the locking part 331 abuts against the first locking end 141. When the sleeve 2 retracts into the through hole 11, the locking part 331 abuts against the second locking end 142. The locking part 331 refers to the part formed on the push handle 33 for engaging with the locking protrusion 14. The protruding structure that achieves position locking can slide along the extension and retraction direction perpendicular to the sleeve 2 to switch the locking state; the elastic reset member refers to the element connected to the locking part 331 to provide elastic restoring force, usually a compression spring or elastic sheet, used to drive the locking part 331 to automatically reset to the locked position; the locking protrusion 14 refers to a strip-shaped or rail-shaped structure provided in the housing 1 and extending along the extension and retraction direction of the sleeve 2, with its two ends forming a first locking end 141 and a second locking end 142 respectively; the first locking end 141 refers to the end area on the locking protrusion 14 that abuts against the locking part 331 to lock the extended position of the sleeve 2; the second locking end 142 refers to the end area on the locking protrusion 14 that abuts against the locking part 331 to lock the retracted position of the sleeve 2.

[0041] Specifically, the locking part 331 is also provided with an anti-disengagement buckle 332 that engages with the insulating bracket 3. It can be understood that by providing an anti-disengagement buckle 332 on the locking part 331 that engages with the insulating bracket 3, the engagement of the anti-disengagement buckle 332 with the insulating bracket 3 restricts the sliding stroke of the locking part 331 relative to the insulating bracket 3, thereby preventing the locking part 331 from falling off the insulating bracket 3 during the sliding process, ensuring the connection reliability between the locking part 331 and the insulating bracket 3, and improving the assembly stability and long-term reliability of the locking structure. In addition, the locking part 331 is also provided with a guide insert 333 that is slidably connected to the insulating bracket 3. By providing the guide insert 333 that is slidably connected to the insulating bracket 3 on the locking part 331, the sliding engagement between the guide insert 333 and the insulating bracket 3 provides additional guiding constraints for the sliding movement of the locking part 331 relative to the insulating bracket 3, thereby enhancing the stability and accuracy of the sliding movement of the locking part 331, preventing the locking part 331 from deviating or shaking during the sliding process, and improving the operational reliability and service life of the locking structure.

[0042] Please combine Figure 6 and Figure 7The sleeve 2 has a clearance notch 24 at the position corresponding to the clearance notch 32 of the insulating bracket 3. The clearance notch 24 is an opening formed on the side wall of the sleeve 2. The function of the clearance notch 24 is the same as that of the clearance notch 32.

[0043] Please refer to Figures 8 to 11 Embodiment 2 of the present invention is a further improvement based on Embodiment 1. The difference between Embodiment 2 and Embodiment 1 is that the width of the clearance notch 32 is greater than the distance between the two round-headed metal pins 31. The insulating bracket 3 is also provided with two conductive plates 34 connecting the round-headed metal pins 31. The conductive plate 34 includes a first connecting part 341, an extension part 342 and a second connecting part 343 connected in sequence. The first connecting part 341 is connected to the round-headed metal pins 31. The extension part 342 extends along the extension direction of the sleeve 2. The second connecting part 343 is used to connect to the conductive terminal 13 in the housing 1. The distance between the extension parts 342 of the two conductive plates 34 is greater than the distance between the two round-headed metal pins 31. The clearance notch 32 is located between the extension parts 342 of the two conductive plates 34. Understandably, by setting the width of the clearance notch 32 to be greater than the distance between the two round-headed metal pins 31, and by placing the clearance notch 32 between the extensions 342 of the two conductive plates 34, the clearance notch 32 can obtain a larger clearance space, thereby adapting to the arrangement requirements of larger sizes or more numbers of sockets 12. At the same time, by extending the extensions 342 of the conductive plates 34 along the extension and retraction direction of the socket 2 and increasing the distance, the electrical connection path between the round-headed metal pins 31 and the conductive terminals 13 inside the housing 1 is optimized, which not only meets the functional requirements of electrical connection, but also provides sufficient arrangement space for the clearance notch 32.

[0044] Please combine Figure 9 and Figure 10 The clearance notch 32 is composed of a first notch 321 and a second notch 322 that are connected. The opening width of the first notch 321 is greater than the distance between the two round metal pins 31, and the opening width of the second notch 322 is less than the distance between the two round metal pins 31 and extends to the space between the two round metal pins 31. In this way, the clearance notch 32 can both clear the insertion area of ​​multiple sockets 12 and deepen the insertion depth of the sockets 12 to meet the insertion requirements of other plug specifications (such as British standard plugs) with post-shaped ground pins.

[0045] Specifically, the conductive sheet 34 refers to a sheet-like connector made of conductive material, used to realize the electrical connection between the round metal pin 31 and the conductive terminal 13 inside the housing 1, and is usually made of good conductors such as copper or copper alloy; the first connecting part 341 refers to the part of the conductive sheet 34 that is directly connected to the round metal pin 31, and is usually fixedly connected by riveting, welding or snap-fitting; the extension part 342 refers to the middle section of the conductive sheet 34 that extends along the extension direction of the sleeve 2, and is used to adapt to the arrangement requirements of the clearance notch 32 and adjust the spacing between the two conductive sheets 34; the second connecting part 343 refers to the part of the conductive sheet 34 that is used to connect with the conductive terminal 13 inside the housing 1, and is usually electrically conductive through contact.

[0046] More specifically, the extension 342 is embedded within the insulating bracket 3, and the extension 342 is covered by the insulating material of the insulating bracket 3, so that the surface of the extension 342 is not exposed to the outside of the insulating bracket 3. This is usually achieved by injection molding or embedded assembly. It can be understood that by embedding the extension 342 within the insulating bracket 3, the extension 342 of the conductive sheet 34 is covered by the insulating material of the insulating bracket 3, thereby improving the bonding strength between the conductive sheet 34 and the insulating bracket 3, preventing the conductive sheet 34 from shifting or deforming during the extension and retraction of the sleeve 2, and enhancing the flatness of the surface of the insulating bracket 3, avoiding safety hazards caused by the exposed conductive sheet 34, and improving the electrical safety performance of the product.

[0047] In other embodiments, the width of the clearance notch 32 may also be equal to the distance between the two round-headed metal pins 31. The opening width of the clearance notch 32 can be set according to the actual application requirements.

[0048] In summary, the travel adapter provided by this invention improves the internal space utilization of the housing by setting the clearance notch on the side of the insulating bracket opposite the socket, so that the insertion area of ​​the socket and the insulating bracket can at least partially overlap in the thickness direction of the housing. At the same time, it removes the restriction that European standard plugs must be placed in the edge area of ​​the housing, increases the layout freedom of the socket and round metal pins, and takes into account both the portability and functional integrity of the travel adapter.

[0049] 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 housing has through holes and sockets for external plugs on opposite sides. A sleeve is retractably installed at the through hole along the thickness direction of the housing; An insulating bracket is slidably disposed within the housing along the thickness direction of the housing and slidably connected to the socket; one side of the insulating bracket is provided with two round-headed metal prongs, and the other side is arranged opposite to the socket and is provided with a clearance notch; A push handle, connected to the insulating bracket and exposed outside the housing, is used to drive the insulating bracket and the socket to extend and retract relative to the housing.

2. The travel converter according to claim 1, characterized in that, The width of the clearance notch is less than the distance between the two round-headed metal pins, and the clearance notch extends between the two round-headed metal pins.

3. The travel converter according to claim 1, characterized in that, The width of the clearance notch is greater than the distance between the two round-headed metal pins. The insulating bracket is also provided with two conductive plates connecting the round-headed metal pins. Each conductive plate includes a first connecting part, an extension part, and a second connecting part connected in sequence. The first connecting part is connected to the round-headed metal pins. The extension part extends along the extension direction of the sleeve. The second connecting part is used to connect to the conductive terminal inside the housing. The distance between the extension parts of the two conductive plates is greater than the distance between the two round-headed metal pins. The clearance notch is located between the extension parts of the two conductive plates.

4. The travel converter according to claim 3, characterized in that, The extension is embedded within the insulating bracket.

5. The travel converter according to claim 1, characterized in that, The socket is provided with a first contact portion and a second contact portion, and the insulating bracket is provided with a contact protrusion; when the round-headed metal prong extends out of the socket, the contact protrusion contacts the first contact portion; when the round-headed metal prong retracts into the socket, the contact protrusion contacts the second contact portion.

6. The travel converter according to claim 1, characterized in that, The insert has a guide protrusion inside, and the insulating bracket has a guide groove that slides in cooperation with the guide protrusion; or, the insert has a guide groove inside, and the insulating bracket has a guide protrusion that slides in cooperation with the guide groove.

7. The travel converter according to claim 1, characterized in that, It also includes a mounting bracket, which is disposed inside the housing and has an isolation portion, which is located between the insertion hole and the insulating bracket and extends into the clearance notch.

8. The travel converter according to claim 1, characterized in that, The push handle is provided with a locking part, which is slidably mounted on the insulating bracket in a direction perpendicular to the extension and retraction direction of the sleeve. The insulating bracket is also provided with an elastic reset member connected to the locking part. The housing is provided with a locking protrusion extending in the extension and retraction direction of the sleeve, and the two opposite ends of the locking protrusion are a first locking end and a second locking end, respectively. When the sleeve extends from the through hole, the locking part abuts against the first locking end; When the sleeve retracts into the perforation, the locking part abuts against the second locking end.

9. The travel converter according to claim 8, characterized in that, The locking part is also provided with an anti-disengagement buckle that engages with the insulating bracket.

10. The travel converter according to claim 8, characterized in that, The locking part is also provided with a guide insert that can be slidably connected to the insulating bracket.

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