Anti-single-plug protection door for multinational power converter

Abstract

The invention discloses an anti-single-plug protection door for a multinational power converter, which comprises a main body upper cover, a bracket arranged in the main body upper cover, a first protection door arranged on the bracket, a second protection door arranged on the bracket, and a spring group arranged between the first protection door and the foremost end of the bracket, the first protection door and the second protection door are in contact with each other and interfere with each other, and the first protection door and the second protection door move in the same direction. According to the single-plug-prevention protection door for the multinational power converter, when the single-plug-prevention protection door is normally used, the first protection door body and the second protection door body can move in the same direction along a straight line, the phenomena that the safety door is clamped and cannot be reset are prevented, and the first protection door body and the second protection door body can play a better safety protection role.

Description

Technical Field

[0001] The present invention relates to the technical field of power converters, and particularly to a single - insertion prevention protection door for a multi - country power converter. Background Art

[0002] Due to the different specifications of plug sockets in each country, they are not universal. If a plug needs to be inserted into a socket with a mismatched specification, a power converter is required. A power converter is a transfer tool. When in use, the power converter is inserted into the target socket, and then the target plug is inserted into the socket hole on the power converter that matches it to achieve conversion. The appearance of the power converter has improved the convenience of people's outdoor life. Especially when traveling abroad, there is no need to worry about the trouble caused by the plug of the electronic device carried not matching the local power socket.

[0003] However, when a plug or other object is inserted into only one jack of the power converter, it will also conduct electricity. For example, when a child plays with inserting a conductive object into the socket of the power converter, there will be a risk of electric shock, and the safety is low. Therefore, a safety door protection structure has been added to the existing power converter. However, due to the limitations in the design of the safety door protection structure, during use, phenomena such as the safety door getting stuck and unable to reset may occur, resulting in a poor safety protection function of the safety door and being unable to effectively protect the electrical safety of consumers. Summary of the Invention

[0004] Aiming at the above - mentioned deficiencies, the purpose of the present invention is to provide a single - insertion prevention protection door for a multi - country power converter. During normal use, the first protection door and the second protection door can move in the same direction along a straight line, preventing phenomena such as the safety door getting stuck and unable to reset, so that the first protection door and the second protection door can play a better safety protection role.

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

[0006] A single - insertion prevention protection door for a multi - country power converter, characterized in that it includes a main body upper cover, a bracket matching the main body upper cover, a first protection door arranged on the bracket, a second protection door arranged on the bracket, and a spring group arranged between the first protection door and the front end of the bracket. Among them, the first protection door and the second protection door are in contact with each other and interfere with each other, and the first protection door and the second protection door move in the same direction.

[0007] As a further improvement of the present invention, the rear end of the first protection door is in contact with the front end of the second protection door and interferes with each other.

[0008] As a further improvement of the present invention, a sliding column that penetrates the second protection door is respectively convexly provided on both sides of the rear end of the first protection door.

[0009] As a further improvement of the present invention, on both sides of the front end of the second protection door, there are respectively convexly provided with a sliding column penetrating through the first protection door.

[0010] As a further improvement of the present invention, the first protection door is integrally in a shape of "Ji", and in the middle of the first protection door, there is provided a through hole extending downward and recessed.

[0011] As a further improvement of the present invention, on both sides of the rear end of the first protection door, there are respectively formed with a front inclined limiting and guiding surface extending obliquely from the inner lower direction to the outer upper direction.

[0012] As a further improvement of the present invention, on the side of the middle of the upper surface of the bracket, there is convexly provided at least one front limiting block.

[0013] As a further improvement of the present invention, the second protection door is integrally in a concave shape or a T shape, and in the middle of the second protection door, there is provided a through slot.

[0014] As a further improvement of the present invention, on the lower surfaces of both sides of the second protection door, there are respectively formed with a rear inclined limiting and guiding surface extending obliquely from the inner lower direction to the outer upper direction.

[0015] As a further improvement of the present invention, on the rear end of the upper surface of the bracket, there are formed at least one rear limiting block matching the shape of the lower end of the second protection door.

[0016] As a further improvement of the present invention, on the front end of the second protection door, there is also formed a limiting platform that can be pressed against the front end of the upper surface of the bracket.

[0017] As a further improvement of the present invention, on both sides of the rear end of the upper surface of the bracket, there are symmetrically provided with a rear lower guiding block, and on the rear lower guiding block, there is also formed a rear lower guiding inclined surface extending obliquely from the upper direction of the rear end of the upper surface of the bracket to the lower direction of the middle of the bracket.

[0018] As a further improvement of the present invention, on both sides of the front end of the first protection door, there are respectively convexly provided with a first connecting column, and on the two side walls of the front end of the upper surface of the bracket, there are respectively convexly provided with a second connecting column extending towards the middle of the bracket; the spring group includes a first spring connected between one of the first connecting columns and one of the second connecting columns, and a second spring connected between the other first connecting column and the other second connecting column.

[0019] As a further improvement of the present invention, a ground wire relief groove is formed in the middle of the bracket, and both sides of the ground wire relief groove are first guiding arc surfaces respectively extending corresponding to the front and rear ends of the bracket; on both sides of the middle part of the lower surface of the first protection door, a front inclined movable guiding slope matching the first guiding arc surface is respectively formed, and on both sides of the middle part of the lower surface of the second protection door, a rear inclined movable guiding slope matching the first guiding arc surface is respectively formed.

[0020] As a further improvement of the present invention, both the front inclined movable guiding slope and the rear inclined movable guiding slope are in the shape of an upwardly concave arc surface.

[0021] As a further improvement of the present invention, a combined jack group is provided on the main body cover. The combined jack group includes a first jack, a second jack, a third jack, a fourth jack, a fifth jack, a sixth jack, a seventh jack, an eighth jack, a ninth jack, a tenth jack, an eleventh jack and a twelfth jack. Among them, the third jack, the fourth jack, the twelfth jack and the seventh jack are arranged in a straight line from front to back. The third jack is located at the uppermost end, the fourth jack is formed above the twelfth jack, the first jack and the second jack are both located on the left side of the twelfth jack, the fifth jack and the sixth jack are both located on the right side of the twelfth jack, the eighth jack and the ninth jack are both located on the left side of the seventh jack, and the tenth jack and the eleventh jack are both located on the right side of the seventh jack; the combination of the second jack, the fifth jack and the seventh jack forms a US standard jack, the combination of the first jack, the twelfth jack and the sixth jack forms an Italian jack, the combination of the third jack, the eighth jack and the eleventh jack forms a UK standard jack, and the combination of the fourth jack, the ninth jack and the tenth jack forms a Chinese standard and Australian standard jack.

[0022] As a further improvement of the present invention, on both sides of the through hole of the first protection door, US standard pin guiding slopes corresponding to and matching the second jack and the fifth jack and extending obliquely from the upper front end to the lower rear end as a whole are respectively formed. On the outer side of the US standard pin guiding slope, Italian standard pin guiding slopes corresponding to and matching the first jack or the sixth jack and extending obliquely from the upper front end to the lower rear end as a whole are formed. At the lower end of the jack of the first protection door, a US standard ground pin guiding slope corresponding to and matching the seventh jack and extending obliquely from the upper front end to the lower rear end as a whole is also formed.

[0023] As a further improvement of the present invention, on both sides of the through slot of the second protection door, there are respectively formed Chinese standard and Australian standard pin guiding slopes that correspond to and match the ninth jack and the tenth jack and extend obliquely from the outer upper front end to the inner lower rear end as a whole. On the outer side of the Chinese standard and Australian standard pin guiding slopes, there is formed a British standard pin guiding slope that corresponds to and matches the eighth jack or the eleventh jack and extends obliquely from the upper front end to the lower rear end as a whole.

[0024] As a further improvement of the present invention, on both sides of the through hole of the first protection door, there are also respectively formed a limiting post that extends upward and can be pressed against the front upper surface of the bracket.

[0025] As a further improvement of the present invention, the combined jack group further includes a thirteenth jack provided in the middle of the third jack, a fourteenth jack provided in the middle of the eighth jack, and a fifteenth jack provided in the middle of the eleventh jack. The thirteenth jack, the fourteenth jack, and the fifteenth jack are combined to form an Indian standard jack.

[0026] As a further improvement of the present invention, in the middle of the through hole, there is formed an Indian standard ground wire relief hole that matches the thirteenth jack. Between the British standard pin guiding slope and the Chinese standard and Australian standard pin guiding slopes, there are also formed Indian standard pin guiding slopes that correspond to and match the fourteenth jack and the fifteenth jack respectively and extend obliquely from the outer upper front end to the inner lower rear end as a whole.

[0027] The beneficial effects of the present invention are as follows:

[0028] By arranging a spring group between the first protection door and the bracket, and providing a connecting post on the first protection door that penetrates through the second protection door, when the first protection door is subjected to a force and moves, the spring group gives an elastic reset force to the first protection door for reset. When the second protection door is subjected to a force and moves, the second protection door pushes the first protection door through the connecting post to squeeze the spring group, and the first protection door and the second protection door move in the same direction, thereby avoiding phenomena such as the second protection door moving left and right or getting stuck and unable to reset. Moreover, the spring group gives an elastic reset force to the first protection door, and the first protection door drives the second protection door to reset, enabling the first protection door and the second protection door to play a better safety protection role.

[0029] The above is an overview of the technical solution of the invention. The following will further describe the present invention in combination with the drawings and specific embodiments. Description of the Drawings

[0030] Figure 1 It is a schematic diagram of the whole of the first embodiment;

[0031] Figure 2 It is a front view schematic diagram of the first embodiment;

[0032] Figure 3 Explosion diagram of Example 1;

[0033] Figure 4 Structural schematic diagram of Example 1 after removing the main body upper cover;

[0034] Figure 5 Structural schematic diagram of the bracket in Example 1;

[0035] Figure 6 Structural schematic diagram of the first protection door in Example 1;

[0036] Figure 7 Bottom view of the first protection door in Example 1;

[0037] Figure 8 Rear view of the first protection door in Example 1;

[0038] Figure 9 Structural schematic diagram of the second protection door in Example 1;

[0039] Figure 10 Bottom view of the second protection door in Example 1;

[0040] Figure 11 Rear view of the second protection door in Example 1;

[0041] Figure 12 Schematic diagram of the insertion of the external power plug in Example 1;

[0042] Figure 13 Internal structural schematic diagram of the insertion of the external power plug in Example 1;

[0043] Figure 14 Overall schematic diagram of Example 2;

[0044] Figure 15 Explosion diagram of Example 2;

[0045] Figure 16 Structural schematic diagram of Example 2 after removing the main body upper cover;

[0046] Figure 17 Structural schematic diagram of the bracket in Example 2;

[0047] Figure 18 Structural schematic diagram of the first protection door in Example 2;

[0048] Figure 19 Bottom view of the first protection door in Example 2;

[0049] Figure 20 Rear view of the first protection door in Example 2;

[0050] Figure 21 It is a schematic structural diagram of the second protection door in the second embodiment;

[0051] Figure 22 It is a bottom view of the second protection door in the second embodiment;

[0052] Figure 23 It is a rear view of the second protection door in the second embodiment;

[0053] In the figure: 1. Main body upper cover; 101. First jack; 102. Second jack; 103. Third jack; 104. Fourth jack; 105. Fifth jack; 106. Sixth jack; 107. Seventh jack; 108. Eighth jack; 109. Ninth jack; 110. Tenth jack; 111. Eleventh jack; 112. Twelfth jack; 113. Thirteenth jack; 114. Fourteenth jack; 115. Fifteenth jack; 2. Bracket; 21. Front limit block; 22. Rear limit block; 23. Second connecting column; 24. Ground wire relief groove; 241. First guiding arc surface; 25. Rear lower guiding block; 251. Rear lower guiding inclined surface; 3. First protection door; 31. Sliding column; 32. Through hole; 321. Indian standard ground wire relief hole; 33. Front inclined limit guiding surface; 34. First connecting column; 35. Front inclined movable guiding inclined surface; 36. US standard pin guiding inclined surface; 37. Italian standard pin guiding inclined surface; 38. US standard ground wire pin guiding inclined surface; 39. Limit column; 4. Second protection door; 41. Through groove; 42. Rear inclined limit guiding surface; 43. Rear inclined movable guiding inclined surface; 44. Chinese standard and Australian standard pin guiding inclined surface; 45. British standard pin guiding inclined surface; 46. Limit platform; 47. Indian standard pin guiding inclined surface; 5. Spring group; 51. First spring; 52. Second spring. Detailed implementation manners

[0054] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined purpose, the following provides a detailed description of the specific implementation manners of the present invention in combination with the accompanying drawings and preferred embodiments.

[0055] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0057] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Embodiment 1

[0059] Please refer to Figures 1 to 13 , an anti-single-insert protection door for a multi-country power converter provided by an embodiment of the present invention includes a main body upper cover 1, a bracket 2 matching the main body upper cover 1, a first protection door 3 disposed at the front end of the upper surface of the bracket 2, a second protection door 4 disposed at the rear end of the upper surface of the bracket 2, and a spring group 5 disposed between the first protection door 3 and the foremost end of the upper surface of the bracket 2. Among them, the first protection door 3 and the second protection door 4 are in contact with each other and interfere with each other, and the first protection door 3 and the second protection door 4 move in the same direction.

[0060] Preferably, the rear end of the first protection door 3 is in contact with and interferes with the front end of the second protection door 4.

[0061] For the specific manner in which the rear end of the first protection door matches and closely adheres to the front end of the second protection door, two sliding columns 31 penetrating the second protection door 4 are respectively protruded on both sides of the rear end of the first protection door 3.

[0062] By arranging a spring group 5 between the first protection door 3 and the bracket 2, and arranging a sliding column 31 on the first protection door 3 which penetrates through the second protection door 4, when the first protection door 3 is subjected to a force and moves, the spring group 5 gives an elastic reset force to the first protection door 3 for reset. When the second protection door 4 is subjected to a force and moves, the second protection door 4 pushes the first protection door 3 through the sliding column 31 arranged on the first protection door 3 to compress the spring group 5, and the first protection door 3 and the second protection door 4 move in the same direction, thus avoiding phenomena such as the second protection door 4 moving left and right, falling off, or getting stuck and unable to reset. Moreover, the spring group 5 gives an elastic reset force to the first protection door 3, and the first protection door 3 drives the second protection door 4 to reset, so that the first protection door 3 and the second protection door 4 can play a better safety protection role.

[0063] The sliding column can also be arranged on the second protection door 4, that is, two sides of the front end of the second protection door 4 are respectively convexly provided with a sliding column that penetrates the first protection door 3. When the second protection door 4 is subjected to a force and moves, the second protection door 4 pushes the first protection door 3 through the sliding column arranged on it to compress the spring group 5, and the first protection door 3 and the second protection door 4 move in the same direction, thus avoiding phenomena such as the second protection door 4 moving left and right or falling off. Moreover, the spring group 5 gives an elastic reset force to the first protection door 3, and the first protection door 3 drives the second protection door 4 to reset, so that the first protection door 3 and the second protection door 4 can play a better safety protection role.

[0064] It is also possible not to arrange a sliding column between the first protection door 3 and the second protection door 4, and the second protection door 4 is directly attached to the first protection door 3 to realize the pushing of the first protection door 3 and the compression of the spring group 5, so that the first protection door 3 and the second protection door 4 move in the same direction.

[0065] Regarding the specific structural arrangement of the first protection door 3, such as Figures 3 to 4 、 Figures 6 to 8As shown, the first protection door 3 is generally in a U shape as a whole. A through hole 32 extending downward and recessed is formed in the middle of the first protection door 3, so that the power plug pins inserted from the outside can pass through the through hole 32 to be connected to the conduction component in the power converter, realizing the conduction of the ground wire of the power plug pins; on the lower surfaces of both sides at the rear end of the first protection door 3, front inclined limiting and guiding surfaces 33 extending obliquely from the inner lower direction to the outer upper direction are respectively formed. Preferably, front limiting blocks 21 protruding upward are respectively formed on the side edges in the middle of the upper surface of the bracket 2. When a single plug pin or a sharp object is inserted into the corresponding position of the first protection door 3 alone, the inserted side of the first protection door 3 drives the first protection door 3 to turn downward as a whole under the guiding action of the front inclined limiting and guiding surface 33, so that the inserted side of the first protection door 3 presses against the front limiting block 21, so that the first protection door 3 cannot move, realizing the prevention of the single plug pin or the sharp object being inserted alone, and further preventing the electric shock phenomenon caused by children playing with the power converter, improving the safety performance.

[0066] For the specific structural setting of the second protection door 4, as Figures 3 to 4 、 Figures 9 to 11 shown, the second protection door 4 is generally in a concave shape or a T shape as a whole. A through slot 41 is formed in the middle of the second protection door 4. The through slot 41 is used to make way for the lower end of the through hole 32 of the first protection door 3 and facilitate the power plug pins inserted from the outside to pass through the through slot 41 to be connected to the conduction component in the power converter, realizing the conduction of the ground wire of the power plug pins; on the lower surfaces of both sides of the second protection door 4, rear inclined limiting and guiding surfaces 42 extending obliquely from the inner lower direction to the outer upper direction are respectively formed; at least a rear limiting block 22 matching the shape of the lower end of the second protection door 4 is formed on the rear end of the upper surface of the bracket 2. When a single plug pin or a sharp object is inserted into the corresponding position of the second protection door 4 alone, the inserted side of the second protection door 4 drives the second protection door 4 to turn downward as a whole under the guiding action of the rear inclined limiting and guiding surface 42, and under the driving of the connecting column 31, the first protection door 3 is simultaneously driven to turn over, so that the first protection door 3 presses against the front limiting block 21, making the first protection door 3 and the second protection door 4 unable to move, realizing the prevention of the single plug pin or the sharp object being inserted alone, and further preventing the electric shock phenomenon caused by children playing with the power converter, further improving the safety performance. If a single plug pin or a sharp object is inserted between the first protection door 3 and the second protection door 4 alone, the second protection door 4 presses against the rear limiting block 22, so that the second protection door 4 cannot move, and the first protection door 3 presses against the front limiting block 21, making the first protection door 3 and the second protection door 4 unable to move, realizing the prevention of the single plug pin or the sharp object being inserted alone, and further preventing the electric shock phenomenon caused by children playing with the power converter, further improving the safety performance.

[0067] To prevent the excessive upward movement of the second protection door 4, as Figures 9 to 11 shown, a limiting platform 46 is further formed at the front end of the second protection door 4, which can be pressed against the front end of the upper surface of the bracket 2. When the external power plug normally presses against the second protection door 4, the second protection door 4 drives the first protection door 3 to move upward until the limiting platform 46 at the front end of the second protection door 4 presses against the front end of the upper surface of the bracket 2, and the second protection door 4 stops moving upward, thereby effectively preventing the situation that the second protection door 4 cannot be reset or damages other structures due to excessive upward movement.

[0068] To further improve the efficiency of the second protection door 4 driving the first protection door 3 to move when inserted by an external power plug, as Figure 5 shown, rear lower guiding blocks 25 are symmetrically arranged at the rear ends on both sides of the upper surface of the bracket 2. A rear lower guiding slope 251 is further formed on the rear lower guiding block 25, which extends obliquely downward from the rear end of the upper surface of the bracket 2 to the lower part of the middle of the bracket 2. When the external power plug is inserted into the lower end of the second protection door 4, the second protection door 4 drives the first protection door 3 to press down until it presses against the rear lower guiding slope 251, and under the guiding action of the inclination of the rear lower guiding slope 251, it moves towards the front end of the bracket 2, thereby preventing other external power plugs from being inserted, improving the efficiency and accuracy of the second protection door 4 driving the first protection door 3 to move, and further improving the safety.

[0069] Regarding the specific manner in which the spring group 5 acts on the first protection door 3, as Figures 3 to 6 shown, first connecting columns 34 are respectively protruded on both sides of the front end of the first protection door 3, and second connecting columns 23 extending towards the middle of the bracket 2 are respectively protruded on the side walls at the front end of the upper surface of the bracket 2; the spring group 5 includes a first spring 51 connected between one of the first connecting columns 34 and one of the second connecting columns 23, and a second spring 52 connected between the other first connecting column 34 and the other second connecting column 23. When the external power plug is normally inserted, the first protection door 3 or the second protection door 4 is subjected to a forward acting force and compresses the first spring 51 and the second spring 52. After the power plug is pulled out, the first protection door 3 or the second protection door 4 is reset under the elastic restoring force of the first spring 51 and the second spring 52, which is convenient for the next use. The first spring 51 and the second spring 52 are respectively arranged on both sides of the first protection door 3, so that the force on the first protection door 3 is uniform, reducing the problem of the first protection door 3 tipping and shifting due to uneven force, and further improving the safety.

[0070] To improve the accuracy of the movement of the first protection door 3 and the second protection door 4, as Figures 5 to 11As shown, a ground wire relief groove 24 is formed in the middle of the bracket 2. On both sides of the ground wire relief groove 24 are first guiding arc surfaces 241 that respectively extend corresponding to the front and rear ends of the bracket. The structural design of the arc surfaces enables the first protection door 3 and the second protection door 4 sliding above it to slide more easily and smoothly; on both sides of the middle part of the lower surface of the first protection door 3 are respectively formed a front inclined movable guiding slope 35 that matches the ground wire relief groove 24, and on both sides of the middle part of the lower surface of the second protection door 4 are respectively formed a rear inclined movable guiding slope 43 that matches the ground wire relief groove 24. Preferably, both the front inclined movable guiding slope 35 and the rear inclined movable guiding slope 43 are in the shape of an upwardly concave arc surface. The two groups match each other, which is beneficial to the cooperation between various components. When the first protection door 3 slides on the ground wire relief groove 24, the two groups of front inclined movable guiding slopes 35 respectively guide the first protection door 3 to slide in the middle of both sides of the ground wire relief groove 24, thereby preventing the first protection door 3 from shifting and falling off during the sliding process. Moreover, when the second protection door 4 slides on the ground wire relief groove 24, the two groups of rear inclined movable guiding slopes 43 respectively guide the second protection door 4 to slide in the middle of both sides of the ground wire relief groove 24, thereby preventing the second protection door 4 from shifting and falling off during the sliding process. The cooperation between the front inclined movable guiding slope 35 and the rear inclined movable guiding slope 43 and the ground wire relief groove 24 can provide a straight wire guiding effect when the first protection door 3 and the second protection door 4 are subjected to a force and move, further improving the accuracy of the movement of the first protection door 3 and the second protection door 4 and further enhancing the safety.

[0071] For the specific manner in which an external power plug is inserted into the power converter, such as Figures 1 to 3As shown, a combined jack group is provided on the main body upper cover 1. The combined jack group includes a first jack 101, a second jack 102, a third jack 103, a fourth jack 104, a fifth jack 105, a sixth jack 106, a seventh jack 107, an eighth jack 108, a ninth jack 109, a tenth jack 110, an eleventh jack 111, and a twelfth jack 112. Among them, the third jack 103, the fourth jack 104, the twelfth jack 112, and the seventh jack 107 are arranged in a straight line from front to back. The third jack 103 is located at the uppermost end. The fourth jack 104 is formed above the twelfth jack 112. Both the first jack 101 and the second jack 102 are located on the left side of the twelfth jack 112. Both the fifth jack 105 and the sixth jack 106 are located on the right side of the twelfth jack 112. Both the eighth jack 108 and the ninth jack 109 are located on the left side of the seventh jack 107. Both the tenth jack 110 and the eleventh jack 111 are located on the right side of the seventh jack 107. The second jack 102, the fifth jack 105, and the seventh jack 107 are combined to form a US standard jack. The first jack 101, the twelfth jack 112, and the sixth jack 106 are combined to form an Italian jack. The third jack 103, the eighth jack 108, and the eleventh jack 111 are combined to form a UK standard jack. The fourth jack 104, the ninth jack 109, and the tenth jack 110 are combined to form a Chinese standard and Australian standard jack. In this embodiment, due to the special combined jack group structure design on the main body upper cover 1 and the cooperation with pins of multiple national standards, it can be applicable to the conversion between plugs and jacks of multiple countries, greatly improving its scope of use.

[0072] For the specific manner in which the external pin is inserted into the first protection door 3, such as Figure 3 and Figure 6As shown, on both sides of the through hole 32 of the first protection door 3, there are respectively formed American standard pin guiding inclined surfaces 36 that correspond to and match the second jack 102 and the fifth jack 105 and extend obliquely from the upper front end to the lower rear end as a whole. On the outer side of the American standard pin guiding inclined surface 38, there is formed an Italian standard pin guiding inclined surface 37 that corresponds to and matches the first jack 101 or the sixth jack 106 and extends obliquely from the upper front end to the lower rear end as a whole. At the lower end of the jack of the first protection door 3, there is also formed an American standard ground pin guiding inclined surface 38 that corresponds to and matches the seventh jack 107 and extends obliquely from the upper front end to the lower rear end as a whole. When an external American standard pin is inserted into the main body upper cover 1, the live wire of the American standard pin passes through the second jack 102 and presses against the left American standard pin guiding inclined surface 38, the neutral wire passes through the fifth jack 105 and presses against the right American standard pin guiding inclined surface 36, and the ground wire passes through the seventh jack 107 and presses against the American standard ground pin guiding inclined surface 38. Under the guiding action of the American standard pin guiding inclined surface 36 and the American standard ground pin guiding inclined surface 38, the American standard pin pushes the first protection door 3 towards the spring group 5, enabling the American standard pin to conduct with the conduction component of the power converter arranged in the bracket 2, thus realizing the conversion of the pin. When an external Italian standard pin is inserted into the main body upper cover 1, the live wire of the Italian standard pin passes through the first jack 101 and presses against the left Italian standard pin guiding inclined surface 37, the neutral wire passes through the sixth jack 106 and presses against the right Italian standard pin guiding inclined surface 37, and the ground wire passes through the twelfth jack 112. Under the guiding action of the Italian standard pin guiding inclined surface 37, the Italian standard pin pushes the first protection door 3 towards the spring group 5, enabling the Italian standard pin to conduct with the conduction component of the power converter arranged in the bracket 2, thus realizing the conversion of the pin.

[0073] For the specific manner in which an external pin is inserted into the second protection door 4, such as Figure 3 and Figure 9As shown, on both sides of the through slot 41 of the second protection door 4, there are respectively formed Chinese standard and Australian standard pin guiding slopes 44 that correspond to and match the ninth jack 109 and the tenth jack 110 and extend obliquely from the outer upper front end to the inner lower rear end as a whole. On the outer side of the Chinese standard and Australian standard pin guiding slopes 44, there is formed a British standard pin guiding slope 45 that corresponds to and matches the eighth jack 108 or the eleventh jack 111 and extends obliquely from the upper front end to the lower rear end as a whole. When an external national standard pin or European pin is inserted into the main body upper cover 1, the live wire of the national standard pin or European pin passes through the ninth jack 109 and presses against the left Chinese standard and Australian standard pin guiding slope 44, the neutral wire passes through the tenth jack 110 and presses against the right Chinese standard and Australian standard pin guiding slope 44, and the ground wire passes through the fourth jack 104. Under the guiding action of the Chinese standard and Australian standard pin guiding slopes 44, the national standard pin or European pin pushes the second protection door 4 towards the spring group 5. The second protection door 4 drives the first protection door 3 to move forward to the front end, so that the national standard pin or European pin corresponds to and conducts with the conduction component of the power converter arranged in the bracket 2, realizing the conversion of the pins. When an external British standard pin is inserted into the main body upper cover 1, the live wire of the British standard pin passes through the eighth jack 108 and presses against the left British standard pin guiding slope 45, the neutral wire passes through the eleventh jack 111 and presses against the right British standard pin guiding slope 45, and the ground wire passes through the third jack 103. Under the guiding action of the British standard pin guiding slope 45, the British standard pin pushes the second protection door 4 towards the spring group 5. The second protection door 4 drives the first protection door 3 to move forward to the front end, so that the British standard pin conducts with the conduction component of the power converter arranged in the bracket 2, realizing the conversion of the pins.

[0074] Embodiment 2

[0075] In the first embodiment, the structure of the anti-single-insert protection door is described. In this embodiment, the differences from other embodiments are mainly described, and the same structures are not repeated in this embodiment.

[0076] Such as Figures 14 to 23As shown in the figure, the main difference between the second embodiment and the first embodiment is that in this embodiment, on both sides of the through hole 32 of the first protection door 3, there are respectively formed a limiting post 39 extending upward and capable of pressing against the front end of the upper surface of the bracket 2, rather than the limiting platform 46 integrally formed at the front end of the second protection door 4. When the external power plug normally presses against the first protection door 3 or the second protection door 4, the first protection door 3 moves upward alone or the second protection door 4 drives the first protection door 3 to move upward until the limiting post 39 of the first protection door 3 presses against the front end of the upper surface of the bracket 2, and the first protection door 3 stops moving upward, thereby effectively preventing the situation that the first protection door 3 moves upward excessively and cannot be reset or damages other structures.

[0077] In order to further improve the practicability of this single - plug - prevention protection door, as Figures 14 to 15 shown, the combined socket group further includes a thirteenth socket 113 arranged in the middle of the third socket 103, a fourteenth socket 114 arranged in the middle of the eighth socket 108, and a fifteenth socket 115 arranged in the middle of the eleventh socket 111. The thirteenth socket 113, the fourteenth socket 114 and the fifteenth socket 115 are combined to form an Indian - standard socket. The special design of the combined socket group structure, combined with the pins of multiple national standards, can be applicable to the conversion between plugs and sockets of multiple countries, further expanding its scope of use.

[0078] For the specific way of inserting an external Indian - standard pin into this single - plug - prevention protection door, as Figures 18 to 23 shown, an Indian - standard ground - wire relief hole 321 matching the thirteenth socket 113 is formed in the middle of the through hole 32. Between the British - standard pin guiding slope 45 and the Chinese - and Australian - standard pin guiding slopes 44, there is also formed an Indian - standard pin guiding slope 47 corresponding to and matching the fourteenth socket 114 and the fifteenth socket 115 respectively, and the Indian - standard pin guiding slope 47 extends obliquely from the outer upper front end to the inner lower rear end as a whole. When an external Indian - standard pin is inserted into the main body upper cover 1, the live wire of the Indian - standard pin passes through the fifteenth socket 115 and presses against the left - hand Indian - standard pin guiding slope 47, the neutral wire passes through the fourteenth socket 114 and presses against the right - hand Indian - standard pin guiding slope 47, and the ground wire passes through the thirteenth socket 113 and enters the Indian - standard ground - wire relief hole 321. Under the guiding action of the Indian - standard pin guiding slope 47, the external Indian - standard pin pushes the first protection door 3 and the second protection door 4 towards the spring group 5, so that the Indian - standard pin conducts with the conduction component of the power converter arranged in the bracket 2, realizing the conversion of the pin.

[0079] It should be noted here that the anti-single insertion protection door for the multi-country power converter disclosed in the present invention is an improvement on the specific structure, and the specific control method is not the innovation point of the present invention. For the springs, American standard pins, British standard pins, national standard pins, Italian standard pins, European pins and other components involved in the present invention, they can be common standard components or components known to those skilled in the art, and their structures, principles and control methods are all known to those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0080] The above are only the preferred embodiments of the present invention, and do not impose any limitation on the technical scope of the present invention. Therefore, other structures obtained by adopting the same or similar technical features as those of the above embodiments of the present invention are all within the protection scope of the present invention.

Claims

1. An anti-single-plug protection door for a multi-national power converter, characterized in that: It includes a main body upper cover, a bracket matching the main body upper cover, a first protection door arranged on the bracket, a second protection door arranged on the bracket, and a spring group arranged between the first protection door and the front end of the bracket. Among them, the first protection door and the second protection door are in contact with each other and interfere with each other, and the first protection door and the second protection door move in the same direction.

2. The anti-single-plug protection door for a multi-country power converter according to claim 1, characterized in that: The rear end of the first protection door is in contact with the front end of the second protection door and interferes with each other.

3. The anti-single-plug protection door for a multi-country power converter according to claim 1, characterized in that: On both sides of the rear end of the first protection door, there are respectively convexly provided with a sliding column penetrating the second protection door.

4. The anti-single-plug protection door for a multi-country power converter according to claim 1, wherein: On both sides of the front end of the second protection door, there are respectively convexly provided with a sliding column penetrating the first protection door.

5. The anti-single-insert protection door for a multi-country power converter according to claim 1, characterized in that: The first protection door is integrally in a U-shaped form, and a through hole extending downward and recessed is provided in the middle of the first protection door.

6. The anti-single-plug protection door for a multi-country power converter according to claim 5, characterized in that: On both sides of the rear end of the first protection door, there are respectively formed with a front inclined limiting and guiding surface extending obliquely from the inner lower direction to the outer upper direction.

7. The anti-single-plug protection door for a multi-country power converter according to claim 5, characterized in that: On the side of the middle part of the upper surface of the bracket, there are at least convexly provided with a front limiting block.

8. The anti-single-plug protection door for a multi-country power converter according to claim 5, characterized in that: The second protection door is integrally in a concave-shaped or T-shaped form, and a through groove is provided in the middle of the second protection door.

9. The anti-single-plug protection door for a multi-country power converter according to claim 8, characterized in that: On the lower surfaces of both sides of the second protection door, there are respectively formed with a rear inclined limiting and guiding surface extending obliquely from the inner lower direction to the outer upper direction.

10. The anti-single-plug protection door for a multi-country power converter according to claim 8, characterized in that: On the rear end of the upper surface of the bracket, there are formed with at least a rear limiting block matching the shape of the lower end of the second protection door.

11. The anti-single-plug protection door for a multi-country power converter according to claim 8, wherein: On the front end of the second protection door, there is also formed with a limiting platform that can be pressed against the front end of the upper surface of the bracket.

12. The anti-single-plug protection door for a multi-country power converter according to claim 1, wherein: On both sides of the rear end of the upper surface of the bracket, there are symmetrically provided with a rear lower guiding block, and on the rear lower guiding block, there is also formed with a rear lower guiding inclined surface extending obliquely from the upper direction of the rear end of the upper surface of the bracket to the lower part of the middle of the bracket.

13. The anti-single-plug protection door for a multi-country power converter according to claim 1, characterized in that: On both sides of the front end of the first protection door, there are respectively convexly provided with a first connecting column, and on both side walls of the front end of the upper surface of the bracket, there are respectively convexly provided with a second connecting column extending towards the middle of the bracket; the spring group includes a first spring connected between one first connecting column and one second connecting column, and a second spring connected between the other first connecting column and the other second connecting column.

14. The anti-single-plug protection door for a multi-country power converter according to claim 1, wherein: In the middle of the bracket, there is formed a ground wire relief groove, and both sides of the ground wire relief groove are first guiding arc surfaces respectively extending corresponding to the front and rear ends of the bracket; on both sides of the middle part of the lower surface of the first protection door, there are respectively formed with a front inclined moving guiding inclined surface matching the first guiding arc surface, and on both sides of the middle part of the lower surface of the second protection door, there are respectively formed with a rear inclined moving guiding inclined surface matching the first guiding arc surface.

15. The anti-single-plug protection door for a multi-country power converter according to claim 14, characterized in that: Both the front inclined moving guiding inclined surface and the rear inclined moving guiding inclined surface are in the shape of an upwardly concave arc surface.

16. The anti-single-plug protection door for a multi-country power converter according to claim 8, characterized in that: The main body upper cover is provided with a combined jack group, which includes a first jack, a second jack, a third jack, a fourth jack, a fifth jack, a sixth jack, a seventh jack, an eighth jack, a ninth jack, a tenth jack, an eleventh jack and a twelfth jack, wherein the third jack, the fourth jack, the twelfth jack and the seventh jack are arranged in a straight line from front to back, the third jack is located at the uppermost end, the fourth jack is formed at the upper end of the twelfth jack, the first jack and the second jack are both located at the twelfth jack The fifth jack and the sixth jack are both located on the right side of the twelfth jack, the eighth jack and the ninth jack are both located on the left side of the seventh jack, and the tenth jack and the eleventh jack are both located on the right side of the seventh jack; the second jack, the fifth jack and the seventh jack are combined to form an American standard jack, the first jack, the twelfth jack and the sixth jack are combined to form an Italian jack, the third jack, the eighth jack and the eleventh jack are combined to form a British standard jack, and the fourth jack, the ninth jack and the tenth jack are combined to form Chinese standard and Australian standard jacks.

17. The anti-single-plug protection door for a multi-country power converter according to claim 16, characterized in that: Both sides of the through hole of the first protective door are respectively formed with American standard pin guide slopes that correspond to the second and fifth sockets and extend obliquely from the upper front end to the lower rear end as a whole. The outer side of the American standard pin guide slope is formed with an Italian standard pin guide slope that corresponds to the first or sixth socket and extends obliquely from the upper front end to the lower rear end as a whole. The lower end of the through hole of the first protective door is also formed with an American standard ground pin guide slope that corresponds to the seventh socket and extends obliquely from the upper front end to the lower rear end as a whole.

18. The anti-single-plug protection door for a multi-country power converter according to claim 16, characterized in that: On both sides of the through slot of the second protective door, there are respectively formed Chinese and Australian standard pin guide slopes which correspond to the ninth and tenth sockets and extend obliquely from the upper outside of the front end to the lower inside of the rear end. On the outer side of the Chinese and Australian standard pin guide slopes, there is formed a British standard pin guide slope which corresponds to the eighth or eleventh socket and extends obliquely from the upper front end to the lower rear end.

19. The anti-single-plug protection door for a multi-country power converter according to claim 5, characterized in that: A limiting column extending upward and capable of pressing against the front end of the upper surface of the bracket is formed on both sides of the through hole of the first protection door.

20. The anti-single-plug protection door for a multi-country power converter according to claim 16, characterized in that: The combined socket group also includes a thirteenth socket arranged in the middle of the third socket, a fourteenth socket arranged in the middle of the eighth socket, and a fifteenth socket arranged in the middle of the eleventh socket. The thirteenth socket, the fourteenth socket and the fifteenth socket are combined to form an Indian standard socket.

21. The anti-single-insert protection door for a multi-country power converter according to claim 20, characterized in that: An Indian standard ground wire clearance hole matching the thirteenth socket is formed in the middle of the through hole, and an Indian standard pin guide slope is formed between the British standard pin guide slope and the Chinese standard and Australian standard pin guide slopes, which respectively match the fourteenth socket and the fifteenth socket and extend obliquely from the upper outer front end to the lower inner rear end.

Images