Protective door structure of multifunctional converter

Abstract

The utility model discloses a protective door structure of a multifunctional converter, which comprises a shell, a cover plate which covers one side of the shell and is provided with different types of socket ports, and a first plug, a second plug and a third plug which are arranged in the shell and can extend towards the other side, a first protection door and a second protection door which are used for shielding the socket ports are arranged on the cover plate in a sliding manner, and the first protection door and the second protection door can shield all types of socket ports; the cover plate is further provided with a fourth re-pressing spring and a fifth re-pressing spring which are used for pushing the first protection door and the second protection door. The first protection door and the second protection door are arranged on the cover plate in a sliding mode to shield the socket ports, so that when the converter is not used, the conducting strips in the converter are separated from the outside, mistaken touch of children is avoided, the use safety is greatly improved, multiple sets of socket ports of different types are shielded by dividing the first protection door and the second protection door, and the safety of the converter is improved. And breakage caused by insufficient structural strength of a single protection door is avoided.

Description

Technical field:

[0001] The utility model relates to the technical field of plug converters, in particular to a protective door structure of a multifunctional converter. Background technology:

[0002] An outlet converter is a portable device designed to adapt to power plug and outlet standards in different countries or regions, enabling users to use electronic devices globally. Because outlet and voltage standards vary worldwide, common outlet types include Type A, Type B, Type C, and Type G, and voltages typically range from 100V to 240V. Therefore, travelers or international users require a multi-country outlet converter to ensure their devices can connect properly to local power sources.

[0003] For example, a plug and socket converter with Chinese patent application authorization number CN 212114225 U includes a housing 11, an upper end cover 12, a first plug 21, a second plug 22, a third plug 23, and a fourth plug 24. The housing 11 includes a receiving cavity 13, which is defined by a through hole 14. The first plug 21, the second plug 22, the third plug 23, and the fourth plug 24 are each received in the receiving cavity 13. The through hole 14 is strip-shaped, and the first plug 21, the second plug 22, the third plug 23, and the fourth plug 24 are each received in the receiving cavity 13, with portions of the first plug 21, the second plug 22, the third plug 23, and the fourth plug 24 extending out of the housing 11 through the through hole 14. By sliding one of the first plug 21, the second plug 22, the third plug 23 and the fourth plug 24 in the space of the through hole 14, one of the first plug 21, the second plug 22, the third plug 23 and the fourth plug 24 is extended to the outside of the housing 11 for connection to the socket of the external power supply. The upper end cover 12 is provided with a socket port 7, which is electrically connected to the first plug 21, the second plug 22, the third plug 23 and the fourth plug 24. The electronic device is powered by being inserted into the socket port, thereby realizing the conversion of different types of plugs and sockets.

[0004] However, the converters currently on the market still have the following problems:

[0005] 1. The first plug 21, the second plug 22, the third plug 23 and the fourth plug 24 are relatively scattered, resulting in an overall structure that is not compact enough, a long longitudinal length, a large volume and inconvenient to carry;

[0006] 2. There is no structure to prevent accidental touch at the socket port 7, which poses a safety hazard;

[0007] 3. A locking rod 6 is used to ensure that only one plug can extend from the housing 11 to the outside of the housing at the same time. However, each plug needs to be equipped with a locking rod 6, and the locking rod 6 needs to be used in conjunction with the rotating shaft, which makes the overall structure complex and requires improved assembly precision, resulting in high manufacturing costs.

[0008] In view of this, the inventors propose the following technical solutions. Utility model content:

[0009] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a protective door structure for a multifunctional converter.

[0010] In order to solve the above technical problems, the utility model adopts the following technical solutions: a protective door structure of a multi-functional converter, comprising: a shell, a cover plate installed on one side of the shell and provided with different types of socket ports, and a first plug, a second plug and a third plug installed in the shell in a slidable manner and capable of extending to the other side, a first protective door and a second protective door for blocking the socket ports being slidably provided on the cover plate, and the first protective door and the second protective door can block all types of socket ports; the cover plate is also provided with a fourth and a fifth compressive spring for pushing the first and second protective doors to always keep the socket ports blocked.

[0011] Furthermore, in the above technical solution, the fourth compression spring and the fifth compression spring are vertically staggered and respectively used to push the first protection door and the second protection door to move up and down and left and right.

[0012] Furthermore, in the above technical solution, the socket port includes British standard sockets, American standard sockets, and Australian standard sockets, among which the British standard sockets are compatible with European standard sockets, the American standard sockets are compatible with national standard sockets and are located on both sides of the top hole of the British standard sockets, the Australian standard sockets are located below the American standard sockets and in the middle area of the British standard sockets, and an auxiliary hole is provided in the middle of the Australian standard socket to form a three-hole combination with the American standard socket. The Australian standard socket and the British standard socket are used in combination to form a three-hole combination.

[0013] Furthermore, in the above technical solution, the first protective door is triangular in shape as a whole and can cover the British standard socket; the second protective door is square in shape and can cover the American standard socket; the back of the cover plate is provided with a positioning travel groove for the movement of the first protective door and the second protective door.

[0014] Furthermore, in the above technical solution, the first protective door includes a first stop portion, a second stop portion and a third stop portion respectively located at the British standard socket, a fourth stop portion and a fifth stop portion respectively located at the Australian standard socket and a middle hole located in the middle corresponding to the auxiliary hole, and the first stop portion, the second stop portion, the third stop portion, the fourth stop portion and the fifth stop portion are all provided with a first inclined surface, and the first inclined surface faces the side of the fourth compressive spring.

[0015] Furthermore, in the above technical solution, a second inclined surface that can correspond to the American standard socket is provided on the second protective door, and the second inclined surface faces the side of the fifth compression spring.

[0016] Furthermore, in the above technical solution, the positioning stroke groove is T-shaped, and the lower end opening of the positioning stroke groove is used for the first protective door to slide up and down, and the fourth compressive spring is arranged below the positioning stroke groove; the upper end of the positioning stroke groove is provided with a first positioning block which is concave and located on the periphery of the British standard socket and is used to position the second protective door, the second protective door is arranged on the first positioning block, and a second positioning block for resisting the outer wall of the second protective door is provided above the first positioning block, and the fifth compressive spring is arranged on the left or right side of the second positioning block.

[0017] Furthermore, in the above technical solution, a plurality of USB interfaces are further provided on one side of the shell, a PCB board module for voltage conversion and output control is provided inside the shell, and the first plug, the second plug, and the third plug are respectively located on both sides of the shell, and the PCB board module and the USB interface; the USB interface includes at least one or two or more of USB-A and USB-C.

[0018] Furthermore, in the above technical solution, a retractable USB interface cable is provided in the housing. The USB interface cable is retracted and installed in the housing, and its retraction is controlled by a coil spring.

[0019] Furthermore, in the above technical solution, several USB interfaces are also provided on one side of the shell, a PCB board module for voltage conversion and output control is provided in the shell, and the first plug, the second plug and the third plug are respectively located on both sides of the shell, and the PCB board module and the USB interface; the USB interface cable is located in the middle of the shell.

[0020] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0021] 1. This invention achieves a more compact design by placing the second plug between the first and third plugs, reducing the size of the converter. By utilizing the three-pin structure of the third plug and creating a hollow center, the third plug facilitates assembly with the second plug. Furthermore, the third and second plugs can slide independently of each other without interfering with each other, significantly improving the converter's space efficiency.

[0022] 2. In the utility model, an interlocking limit plate is added to the housing, and the interlocking limit plate is used to limit and position the first plug, the second plug, and the third plug, so that only one of the first plug, the second plug, and the third plug can be pushed out of the housing. After one of the plugs is extended out of the housing, it will remain engaged with the interlocking limit plate, so that the other plugs can no longer push the interlocking limit plate to move, and thus can no longer push the plugs out of the housing, thereby achieving mutual locking of the plugs and ensuring that only one plug can be extended out of the housing.

[0023] 3. In the present invention, the first and second protective doors are slidably provided on the cover plate to shield the socket opening, so that the conductive sheet inside the converter is separated from the outside when the converter is not in use, preventing children from accidentally touching it, greatly improving the safety of use. The first and second protective doors are divided into a plurality of groups of different types of socket openings to shield them, avoiding the structural strength of a single protective door that is insufficient and causing breakage. Secondly, the fourth and fifth compressive springs are provided to push the first and second protective doors to keep shielding the socket opening, ensuring that there is a reset force after the first and second protective doors are pushed open. When the external pin is inserted into the corresponding socket opening, the first or second protective door can be pushed to slide away, thereby achieving electrical conduction between the external pin and the conductive sheet inside the converter. Description of the drawings:

[0024] Figure 1 This is a three-dimensional Figure 1 ;

[0025] Figure 2 This is a three-dimensional Figure 2 ;

[0026] Figure 3 This is the decomposition of the utility model Figure 1 ;

[0027] Figure 4 This is the decomposition of the utility model Figure 2 ;

[0028] Figure 5 It is a structural diagram of the interlocking limit plate in the utility model;

[0029] Figure 6 It is a three-dimensional diagram of the interlocking limit plate in the utility model;

[0030] Figure 7 It is a three-dimensional diagram of the third plug in the present utility model;

[0031] Figure 8 This is an exploded view of the third plug in the present utility model;

[0032] Figure 9 It is a three-dimensional diagram of the first plug in the utility model;

[0033] Figure 10 This is an exploded view of the first plug in the present utility model;

[0034] Figure 11 This is a schematic structural diagram of the rear cover of the utility model;

[0035] Figure 12 It is a three-dimensional diagram of the first protective door in the utility model;

[0036] Figure 13 It is a three-dimensional diagram of the second protective door in the utility model;

[0037] Figure 14 It is a structural diagram of the inner cavity of the shell in the utility model. Specific implementation method:

[0038] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0039] See Figures 1 to 14 As shown, a multifunctional converter comprises: a housing 1, a first plug 2, a second plug 3, and a third plug 4 slidably mounted in the housing 1 and capable of extending to the other side, and a cover plate 11 mounted on one side of the housing 1 and provided with socket openings 10 of different types. The first plug 2 is provided with two flat first pins 21, the second plug 3 is provided with two round second pins 31, and the third plug 4 is provided with three square third pins 41. The second pins 31 on the first plug 2 can be swung into a parallel state and an "eight" shape. The second plug 3 is located between the first plug 2 and the third plug 4, and the third plug 4 is provided with a hollow structure for accommodating the second plug 3. One of the third pins 41 of the third plug 4 is located on one side of the second plug 3 and between the two first pins 21 of the first plug 2, and the other two third pins 41 are located on the other side of the second plug 3.

[0040] By placing the second plug 3 between the first plug 2 and the third plug 4, the internal structure of the housing 1 is made more compact, reducing the size of the converter. Taking advantage of the three-pin structure of the third plug 4, the hollow center of the third plug 4 facilitates assembly of the second plug 3. Furthermore, the third plug 4 and the second plug 3 can slide independently of each other without interfering with each other, significantly improving the space utilization of the converter.

[0041] The third plug 4 includes a third sliding frame 42 slidably mounted within the housing 1 , a fifth conductive insert 43 and a sixth conductive insert 44 mounted on the third sliding frame 42 and electrically connected to the two third pins 41 , and a third actuator plate 45 slidably mounted at the bottom of the third sliding frame 42 and extending one end out of the housing 1 . A U-shaped notch 46 for accommodating the second plug 3 is disposed in the middle of both the third sliding frame 42 and the third actuator plate 45 . The three third pins 41 of the third plug 4 are mounted on the third sliding frame 42 and are located on either side of the U-shaped notch 46 . The fifth conductive insert 43 and the sixth conductive insert 44 are electrically connected to the two pins within the third sliding frame 42 .

[0042] The third toggle plate 45 is installed on the bottom of the third sliding frame 42 by elastic buckling, and a third compression spring 47 is provided between the third toggle plate 45 and the third sliding frame 42 for pushing one end of the third toggle plate 45 out of the shell 1; one end of the third toggle plate 45 is formed with a third locking portion 451 located outside the shell 1 and used for positioning at the starting point and the end point.

[0043] The housing 1 is provided with a fifth guide post E and a sixth guide post F for positioning and slidingly guiding the third plug 4. The fifth guide post E and the sixth guide post F extend through the ends of a third sliding frame 42, respectively. The third sliding frame 42 has a fifth hole 421 and a sixth hole 422 at each end for the fifth guide post E and the sixth guide post F to pass through. The fifth guide post E is molded within the housing 1, and the sixth guide post F is removably mounted within the housing 1.

[0044] The first plug 2 includes a first sliding frame 22 slidably mounted in the housing 1, a first conductive plug 23 and a second conductive plug 24 disposed on the first sliding frame 22 and electrically connected to the two first plugs 21 respectively, and a first paddle 25 slidably disposed at the bottom of the first sliding frame 22 and with one end extending out of the housing 1, wherein the two first plugs 21 are rotatably mounted on the first sliding frame 22, and a first conductive sleeve 26 that is sleeved and mounted on the bottom of the two first plugs 21 and that is connected to the first conductive plug 23 and the second conductive plug 24.

[0045] The first toggle plate 25 is installed on the bottom of the first sliding frame 22 by elastic buckling, and a first compressive spring 27 is provided between the first toggle plate 25 and the first sliding frame 22 for pushing one end of the first toggle plate 25 out of the shell 1; one end of the first toggle plate 25 is formed with a first locking portion 251 located outside the shell 1 and used for positioning at the starting point and the end point.

[0046] The housing 1 is provided with a first guide post A and a second guide post B for positioning and slidingly guiding the first plug 2, and the first guide post A and the second guide post B respectively pass through the two ends of the first sliding frame 22. The two ends of the first sliding frame 22 are provided with a first set of holes 221 and a second set of holes 222 for the first guide post A and the second guide post B to pass through.

[0047] An interlocking limit plate 5 is provided in the shell 1 for limiting that only one plug can extend out of the shell 1. The interlocking limit plate 5 is provided with limiting protrusions corresponding to the number of plugs and located one by one within the sliding stroke of the plugs. When one of the plugs passes through the limiting protrusion, the interlocking limit plate 5 can be locked to limit the other plugs from pushing the interlocking limit plate 5 to move out of the shell 1 again; a positioning base 6 for installing and positioning the interlocking limit plate 5 is also provided in the shell 1, and the interlocking limit plate 5 is slidably installed on one side of the positioning base 6.

[0048] By adding an interlocking limit plate 5 to the shell 1, the interlocking limit plate 5 is used to limit and position the first plug 2, the second plug 3 and the third plug 4, so that only one of the first plug 2, the second plug 3 and the third plug 4 can be pushed out of the shell 1. After one of the plugs is extended out of the shell 1, it will remain engaged with the interlocking limit plate 5, so that the other plugs can no longer push the interlocking limit plate 5 to move, and thus can no longer push the plugs out of the shell 1, thereby realizing mutual locking of the plugs and ensuring that only one plug can be extended out of the shell 1.

[0049] A slide rail portion 61 for mounting the interlocking limit plate 5 and allowing it to slide is provided on one side of the positioning base 6 , and a slide groove portion 51 for matching and buckling with the slide rail portion 61 is provided on one side of the interlocking limit plate 5 .

[0050] The two ends of the slide rail portion 61 are provided with a first limit block 62 and a second limit block 63 for limiting the movement of the interlock limit plate 5. A seventh return spring 64 is provided between the first limit block 62 and the interlock limit plate 5, and an eighth return spring 65 is provided between the second limit block 63 and the interlock limit plate 5. By providing the seventh return spring 64 and the eighth return spring 65 on both sides of the interlock limit plate 5, respectively, the seventh return spring 64 and the eighth return spring 65 are used to push the interlock limit plate 5 to maintain a middle position, so that the limit protrusion always has a tendency to move toward the middle. No matter which side the plug pushes the limit protrusion to slide, under the return force of the seventh return spring 64 and the eighth return spring 65, the interlock limit plate 5 can return to its initial position, keeping the limit protrusion within the travel of the plug, so that other plugs can no longer be pushed out of the housing 1, thereby achieving interlocking.

[0051] In another embodiment, the interlocking stop plate 5 is further provided with a reset protrusion located below and opposite the limit protrusion. When the plug passes over the reset protrusion, the reset protrusion can push the interlocking stop plate 5 back to its initial position. By providing a reset protrusion symmetrical to the limit protrusion below the limit protrusion, the reset protrusion can be used to push the interlocking stop plate 5 back to its initial position after the plug slides over it. That is, the limit protrusion returns to the sliding travel position of the plug, limiting the sliding of other plugs and achieving an interlocking effect.

[0052] Both sides of the position-limiting protrusion are provided with third inclined guide surfaces 52 that facilitate the plug's pushing of the interlocking limit plate 5. After the plug passes through the position-limiting protrusion, it can push the interlocking limit plate 5 to one side while always maintaining contact and pressure with the interlocking limit plate 5. Providing the third inclined guide surfaces 52 on both sides of the position-limiting protrusion facilitates the plug's extension and retraction into the housing 1, making it smoother and preventing the plug from getting stuck.

[0053] The plug includes a first plug 2, a second plug 3 and a third plug 4 arranged in parallel. The interlocking limit plate 5 is arranged parallel to one side of the first plug 2, the second plug 3 and the third plug 4, and the interlocking limit plate 5 is provided with a first limit protrusion 53, a second limit protrusion 54 and a third limit protrusion 55 corresponding to the first plug 2, the second plug 3 and the third plug 4 respectively.

[0054] The first plug 2, the second plug 3, and the third plug 4 are respectively provided with first, second, and third engaging portions 251, 351, and 451 extending from the housing 1 and configured to contact and push the first, second, and third limiting protrusions 53, 54, and 55. A first, second, and third sliding grooves 1A, 1B, and 1C are respectively provided on the sidewalls of the housing 1, corresponding to the first, second, and third engaging portions 251, 351, and 451, and configured to guide the sliding movement and positioning of the first, second, and third engaging portions 351, 451.

[0055] The cover plate 11 is provided with a first protective door 7 and a second protective door 8 for covering the socket opening 10 in a sliding manner. The first protective door 7 and the second protective door 8 can block all types of socket openings 10; the cover plate 11 is also provided with a fourth compressive spring 70 and a fifth compressive spring 80 for pushing the first protective door 7 and the second protective door 8 to always keep the socket opening 10 covered.

[0056] By sliding a first protective door 7 and a second protective door 8 on the cover plate 11 to shield the socket port 10, the conductive sheet inside the converter is separated from the outside when the converter is not in use, preventing children from accidentally touching it, greatly improving the safety of use. By dividing the first protective door 7 and the second protective door 8, it is possible to shield multiple groups of different types of socket ports 10, avoiding the lack of structural strength of a single protective door and causing breakage. Secondly, by setting a fourth compressive spring 70 and a fifth compressive spring 80 to push the first protective door 7 and the second protective door 8 to keep shielding the socket port 10, so as to ensure that the first protective door 7 and the second protective door 8 have a reset force after being pushed open. When the external pin is inserted into the corresponding socket port 10, it can push the first protective door 7 or the second protective door 8 to slide away, so as to achieve electrical conduction between the external pin and the conductive sheet inside the converter.

[0057] The fourth compression spring 70 and the fifth compression spring 80 are vertically staggered and respectively used to push the first protection door 7 and the second protection door 8 to move up and down and left and right.

[0058] The socket port 10 includes a British standard socket 101, an American standard socket 102, and an Australian standard socket 103, wherein the British standard socket 101 is compatible with the European standard socket, the American standard socket 102 is compatible with the national standard socket and is located on both sides of the top hole of the British standard socket 101, and the Australian standard socket 103 is located below the American standard socket 102 and in the middle area of the British standard socket 101, and an auxiliary hole 104 is provided in the middle of the Australian standard socket 103 to form a three-hole combination with the American standard socket 102. The Australian standard socket 103 and the British standard socket 101 are used together to form a three-hole combination.

[0059] The first protective door 7 is triangular in shape as a whole and can cover the British standard socket 101; the second protective door 8 is square in shape and can cover the American standard socket 102; the back of the cover plate 11 is provided with a positioning travel groove 111 for the movement of the first protective door 7 and the second protective door 8.

[0060] The first protective door 7 includes a first stopper portion 71, a second stopper portion 72 and a third stopper portion 73 respectively located at the British standard socket 101, a fourth stopper portion 74 and a fifth stopper portion 75 respectively located at the Australian standard socket 103, and a middle hole 76 located in the middle corresponding to the auxiliary hole 104, and a first inclined surface 7A is provided on the first stopper portion 71, the second stopper portion 72, the third stopper portion 73, the fourth stopper portion 74 and the fifth stopper portion 75, and the first inclined surface 7A faces the side of the fourth compressive spring 70.

[0061] The second protective door 8 is provided with a second inclined surface 81 corresponding to the American standard socket 102 , and the second inclined surface 81 faces the side of the fifth compression spring 80 .

[0062] The positioning stroke groove 111 is T-shaped, and the lower end opening of the positioning stroke groove 111 is used for the first protective door 7 to slide up and down, and the fourth compressive spring 70 is arranged below the positioning stroke groove 111; the upper end of the positioning stroke groove 111 is provided with a first positioning block 112 which is concave and located on the periphery of the British standard socket 101 and is used to position the second protective door 8, the second protective door 8 is sleeved on the first positioning block 112, and a second positioning block 113 for contacting the outer wall of the second protective door 8 is provided above the first positioning block 112, and the fifth compressive spring 80 is provided on the left or right side of the second positioning block 113.

[0063] Several USB interfaces 12 are also provided on one side of the shell 1. A PCB board module 9 for voltage conversion and output control is provided inside the shell 1, and the first plug 2, the second plug 3, and the third plug 4 are respectively located on both sides of the shell 1 with the PCB board module 9 and the USB interface 12; the USB interface 12 includes at least one or two or more of USB-A and USB-C.

[0064] The housing 1 is provided with a retractable USB interface cable 13 . The USB interface cable 13 is retracted and installed in the housing 1 , and its retraction is controlled by a coil spring.

[0065] Several USB interfaces 12 are also provided on one side of the shell 1. A PCB board module 9 for voltage conversion and output control is provided in the shell 1, and the first plug 2, the second plug 3, and the third plug 4 are respectively located on both sides of the shell 1, and the PCB board module 9 and the USB interface 12; the USB interface cable 13 is located in the middle of the shell 1.

[0066] In summary, the present invention adopts first plugs 2, second plugs 3, and third plugs 4 of different national standards to adapt to the power grid requirements of different countries, and adopts different types of socket ports 10 to adapt to the insertion of pins of different national standards, thereby meeting the needs of business trips and travel to different countries. By providing an interlocking limit plate 5 in the housing 1, the first plug 2, the second plug 3, and the third plug 4 are limited and positioned to ensure that only one plug can extend out of the housing 1 at a time, making it convenient for the plug to be inserted into the power grid. By providing a first protective door 7 and a second protective door 8 on the cover plate 11, the socket port 10 is shielded to prevent non-pin objects from being inserted into the socket port 10, thereby improving safety of use. At the same time, the European standard second plug 3 is provided between the first plug 2 and the third plug 4, making the overall structural layout more compact and reducing the size of the converter.

[0067] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A protective door structure for a multifunctional converter, comprising: A housing (1), a cover plate (11) mounted on one side of the housing (1) and provided with different types of socket openings (10), and a first plug (2), a second plug (3), and a third plug (4) mounted in a slidable manner in the housing (1) and capable of extending to the other side, characterized in that: A first protective door (7) and a second protective door (8) for shielding the socket opening (10) are slidably provided on the cover plate (11); the first protective door (7) and the second protective door (8) are capable of shielding all types of socket openings (10); The cover plate (11) is also provided with a fourth compressive spring (70) and a fifth compressive spring (80) for pushing the first protection door (7) and the second protection door (8) to always keep the socket opening (10) covered.

2. The protective door structure of a multifunctional converter according to claim 1, characterized in that: The fourth compression spring (70) and the fifth compression spring (80) are vertically staggered and respectively used to push the first protection door (7) and the second protection door (8) to move up and down and left and right.

3. The protective door structure of a multifunctional converter according to claim 1, characterized in that: The socket port (10) includes a British standard socket (101), an American standard socket (102), and an Australian standard socket (103), wherein the British standard socket (101) is compatible with the European standard socket, the American standard socket (102) is compatible with the national standard socket and is located on both sides of the top hole of the British standard socket (101), the Australian standard socket (103) is located below the American standard socket (102) and in the middle area of the British standard socket (101), and an auxiliary hole (104) is provided in the middle of the Australian standard socket (103) to form a three-hole socket with the American standard socket (102). The Australian standard socket (103) and the British standard socket (101) are used together to form a three-hole socket.

4. The protective door structure of a multifunctional converter according to claim 1, characterized in that: The first protective door (7) is triangular in shape as a whole and can cover the British standard socket (101); the second protective door (8) is square in shape and can cover the American standard socket (102); and a positioning travel groove (111) for the movement of the first protective door (7) and the second protective door (8) is provided on the back side of the cover plate (11).

5. The protective door structure of a multifunctional converter according to claim 4, characterized in that: The first protective door (7) comprises a first stopper portion (71), a second stopper portion (72) and a third stopper portion (73) respectively located at the British standard socket (101), a fourth stopper portion (74) and a fifth stopper portion (75) respectively located at the Australian standard socket (103), and a central hole (76) located in the middle corresponding to the auxiliary hole (104), and a first inclined surface (7A) is provided on the first stopper portion (71), the second stopper portion (72), the third stopper portion (73), the fourth stopper portion (74) and the fifth stopper portion (75), and the first inclined surface (7A) faces the side of the fourth compression spring (70).

6. The protective door structure of a multifunctional converter according to claim 4, characterized in that: The second protective door (8) is provided with a second inclined surface () that can correspond to the American standard socket (102), and the second inclined surface () faces the side of the fifth compression spring (80).

7. The protective door structure of a multifunctional converter according to claim 4, characterized in that: The positioning travel groove (111) is T-shaped, and the lower end opening of the positioning travel groove (111) is used for the first protection door (7) to slide up and down, and the fourth compression spring (70) is arranged below the positioning travel groove (111); the upper end of the positioning travel groove (111) is provided with a first positioning block (112) which is concave and located outside the British standard socket (101) and is used to position the second protection door (8), the second protection door (8) is sleeved on the first positioning block (112), and a second positioning block (113) for contacting the outer wall of the second protection door (8) is provided above the first positioning block (112), and the fifth compression spring (80) is arranged on the left or right side of the second positioning block (113).

8. A protective door structure for a multifunctional converter according to any one of claims 1 to 7, characterized in that: A plurality of USB interfaces (12) are further provided on one side of the housing (1); a PCB board module (9) for voltage conversion and output control is provided in the housing (1); and a first plug (2), a second plug (3), and a third plug (4) are respectively located on both sides of the housing (1) along with the PCB board module (9) and the USB interfaces (12); and the USB interfaces (12) include at least one or more of USB-A and USB-C.

9. A protective door structure for a multifunctional converter according to any one of claims 1 to 7, characterized in that: A USB interface cable (13) that can be extended and pulled out is provided in the housing (1). The USB interface cable (13) is retracted and installed in the housing (1), and its extension and retraction are controlled by a coil spring.

10. The protective door structure of a multifunctional converter according to claim 9, characterized in that: A plurality of USB interfaces (12) are further provided on one side of the housing (1), a PCB board module (9) for voltage conversion and output control is provided in the housing (1), and a first plug (2), a second plug (3), and a third plug (4) are respectively located on both sides of the housing (1) along with the PCB board module (9) and the USB interfaces (12); and the USB interface cable (13) is located in the middle of the housing (1).

Images