Single socket hole insertion prevention shutter for multi-country power adaptor

Abstract

Disclosed in the present invention is a single socket hole insertion prevention shutter for a multi-country power adaptor. The single socket hole insertion prevention shutter comprises a main body upper cover, a support arranged in the main body upper cover, a first shutter arranged on the support, a second shutter arranged on the support, and a spring set arranged between the first shutter and the foremost end of the support, wherein the first shutter and the second shutter are in contact with each other and interfere with each other, and the first shutter and the second shutter move in the same direction. The present invention aims to provide a single socket hole insertion prevention shutter for a multi-country power adaptor, during normal use, the first shutter and the second shutter can keep moving in the same direction along a straight line, preventing issues such as the shutters getting stuck and failing to reset, so that the first shutter and the second shutter can provide better safety protection.

Description

A single plug protection door for multi-country power converter TECHNICAL FIELD

[0001] The present application relates to the technical field of power converter, in particular to a single plug protection door for multi-country power converter. BACKGROUND

[0002] Because the plug and socket specifications of each country are different, they cannot be used universally. If the plug needs to be inserted into a socket with a different specification, a power converter is required. The power converter is a kind of adapter tool. When used, the power converter is inserted into the target socket, and then the target plug is inserted into the socket hole matched with it on the power converter to achieve conversion. The emergence of the power converter improves the convenience of people's life, especially when traveling across countries, people do not need to worry about the trouble caused by the mismatch between the plug of the electronic equipment carried and the local power socket.

[0003] However, when the plug or other objects are inserted into only one socket of the power converter, it will also be conducted, for example, when children play with inserting conductive objects 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 is added to the existing power converter. However, due to the limitations of the design of the safety door protection structure, during use, the safety door may be stuck and unable to reset, etc., resulting in poor safety door protection function and unable to effectively protect the safety of consumers using electricity. SUMMARY

[0004] In view of the above shortcomings, the purpose of the present application is to provide a single plug protection door for multi-country power converter. When used normally, the first protection door and the second protection door can move in the same direction along a straight line, preventing the safety door from being stuck and unable to reset, etc., 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 application to achieve the above purpose is:

[0006] A single plug protection door for multi-country power converter, characterized in that it comprises a main body cover, a bracket matched with the main body cover, a first protection door arranged on the bracket, a second protection door arranged on the bracket, and a spring set arranged between the first protection door and the front end of the bracket, wherein the first protection door and the second protection door contact 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 application, the rear end of the first protection door and the front end of the second protection door contact and interfere with each other.

[0008] As a further improvement of the present application, the first protection door is provided with a sliding column penetrating the second protection door on both sides of the rear end of the first protection door.

[0009] As a further improvement of the present application, the second protection door is provided with a sliding column penetrating the first protection door on both sides of the front end of the second protection door.

[0010] As a further improvement of the present application, the first protection door is provided with a sliding column penetrating the second protection door on both sides of the rear end of the first protection door.

[0011] As a further improvement of the present application, the first protection door is provided with a sliding column penetrating the second protection door on both sides of the rear end of the first protection door.

[0012] As a further improvement of the present application, the first protection door is provided with a sliding column penetrating the second protection door on both sides of the rear end of the first protection door.

[0013] As a further improvement of the present application, the second protection door is provided with a sliding column penetrating the first protection door on both sides of the front end of the second protection door.

[0014] As a further improvement of the present application, the second protection door is provided with a sliding column penetrating the first protection door on both sides of the front end of the second protection door.

[0015] As a further improvement of the present application, the first protection door is provided with a sliding column penetrating the second protection door on both sides of the rear end of the first protection door.

[0016] As a further improvement of the present application, the second protection door is provided with a sliding column penetrating the first protection door on both sides of the front end of the second protection door.

[0017] As a further improvement of the present application, the first protection door is provided with a sliding column penetrating the second protection door on both sides of the rear end of the first protection door.

[0018] As a further improvement of the present application, the first protection door is provided with a sliding column penetrating the second protection door on both sides of the rear end of the first protection door.

[0019] As a further improvement of the present application, a ground wire accommodation groove is formed in the middle of the bracket, and two first guide arc surfaces corresponding to the front and rear ends of the bracket are formed on both sides of the ground wire accommodation groove; a front inclined movable guide slope is formed on both sides of the middle of the lower surface of the first protection door, and a rear inclined movable guide slope is formed on both sides of the middle of the lower surface of the second protection door.

[0020] As a further improvement of the present application, the front inclined movable guide slope and the rear inclined movable guide slope are both upwardly recessed arc surfaces.

[0021] As a further improvement of the present application, a combined jack set is formed on the upper cover of the main body, 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. 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 located on the left side of the twelfth jack, the fifth jack and the sixth jack are located on the right side of the twelfth jack, the eighth jack and the ninth jack are located on the left side of the seventh jack, and the tenth jack and the eleventh jack are located on the right side of the seventh jack. The second jack, the fifth jack, and the seventh jack form a US standard jack, the first jack, the twelfth jack, and the sixth jack form an Italian standard jack, the third jack, the eighth jack, and the eleventh jack form a British standard jack, and the fourth jack, the ninth jack, and the tenth jack form a Chinese standard jack and an Australian standard jack.

[0022] As a further improvement of the present application, US standard plug guide slopes corresponding to the second jack and the fifth jack and extending from the front upper end to the rear lower end are formed on both sides of the through hole of the first protection door, Italian standard plug guide slopes corresponding to the first jack or the sixth jack and extending from the front upper end to the rear lower end are formed on the outer side of the US standard plug guide slopes, and a US standard ground wire plug guide slope corresponding to the seventh jack and extending from the front upper end to the rear lower end is formed at the lower end of the jack of the first protection door.

[0023] As a further improvement of the present application, a China and Australia standard plug guiding inclined surface corresponding to the ninth and tenth jack holes is formed on both sides of the through slot of the second protective door and extends from the front upper side to the rear lower side.

[0024] As a further improvement of the present application, a limiting column extending upward and capable of being pressed against the front upper side of the upper surface of the support is further formed on both sides of the through hole of the first protective door.

[0025] As a further improvement of the present application, the combined jack group further comprises a thirteenth jack hole arranged in the middle of the third jack hole, a fourteenth jack hole arranged in the middle of the eighth jack hole, and a fifteenth jack hole arranged in the middle of the eleventh jack hole, and the thirteenth, fourteenth and fifteenth jack holes combine to form an India standard jack hole.

[0026] As a further improvement of the present application, an India standard ground wire accommodating hole corresponding to the thirteenth jack hole is formed in the middle of the through hole, and India standard plug guiding inclined surfaces corresponding to the fourteenth and fifteenth jack holes are further formed between the British standard plug guiding inclined surface and the China and Australia standard plug guiding inclined surface and extend from the front upper side to the rear lower side.

[0027] The present application has the following advantages:

[0028] By arranging the spring group between the first protective door and the support and arranging a connecting column penetrating through the second protective door on the first protective door, when the first protective door moves under the action of force, the spring group provides elastic return force to the first protective door for resetting, when the second protective door moves under the action of force, the second protective door pushes the first protective door to compress the spring group through the connecting column, and the first protective door and the second protective door move in the same direction, thereby avoiding the phenomenon that the second protective door moves left and right or is stuck and cannot be reset, and the spring group provides elastic return force to the first protective door, the first protective door drives the second protective door to reset, so that the first protective door and the second protective door can play a better safety protection role.

[0029] The above is a summary of the technical scheme of the present application, and the present application will be further described in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 is a schematic diagram of the whole embodiment one;

[0031] Fig. 2 is a schematic diagram of the front of embodiment one;

[0032] Figure 3 is an exploded view of Example One;

[0033] Figure 4 is a structural view of Example One after removal of the body top cover;

[0034] Figure 5 is a structural view of the support of Example One;

[0035] Figure 6 is a structural view of the first protective door of Example One;

[0036] Figure 7 is a bottom view of the first protective door of Example One;

[0037] Figure 8 is a rear view of the first protective door of Example One;

[0038] Figure 9 is a structural view of the second protective door of Example One;

[0039] Figure 10 is a bottom view of the second protective door of Example One;

[0040] Figure 11 is a rear view of the second protective door of Example One;

[0041] Figure 12 is a schematic view of the insertion of the external power plug of Example One;

[0042] Figure 13 is a schematic view of the internal structure of the insertion of the external power plug of Example One;

[0043] Figure 14 is a schematic view of the overall structure of Example Two;

[0044] Figure 15 is an exploded view of Example Two;

[0045] Figure 16 is a structural view of Example Two after removal of the body top cover;

[0046] Figure 17 is a structural view of the support of Example Two;

[0047] Figure 18 is a structural view of the first protective door of Example Two;

[0048] Figure 19 is a bottom view of the first protective door of Example Two;

[0049] Figure 20 is a rear view of the first protective door of Example Two;

[0050] Figure 21 is a structural view of the second protective door of Example Two;

[0051] Figure 22 is a bottom view of the second protective door of Example Two;

[0052] Figure 23 is a rear view of the second protective door of Example Two;

[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 accommodation groove; 241, first guide circular arc surface; 25, rear lower guide block; 251, rear lower guide inclined surface; 3, first protection door; 31, sliding column; 32, through hole; 321, India standard ground wire accommodation hole; 33, front inclined limit guide surface; 34, first connecting column; 35, front inclined movable guide inclined surface; 36, American standard plug pin guide inclined surface; 37, Italian standard plug pin guide inclined surface; 38, American standard ground wire plug pin guide inclined surface; 39, limit column; 4, second protection door; 41, through groove; 42, rear inclined limit guide surface; 43, rear inclined movable guide inclined surface; 44, Chinese standard and Australian standard plug pin guide inclined surface; 45, British standard plug pin guide inclined surface; 46, limit table; 47, India standard plug pin guide inclined surface; 5, spring set; 51, first spring; 52, second spring. DETAILED DESCRIPTION

[0054] In order to further clarify the technical means and effects of the present application, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0055] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0056] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0057] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] Embodiment one

[0059] Please refer to FIG. 1 to FIG. 13, the embodiment of the present application provides a single plug protection door for multi-country power converter, including a main body cover 1, a bracket 2 matched with the main body cover 1, a first protection door 3 arranged on the front end of the upper surface of the bracket 2, a second protection door 4 arranged on the rear end of the upper surface of the bracket 2, a spring set 5 arranged between the first protection door 3 and the front end of the upper surface of the bracket 2, wherein 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 and the front end of the second protection door 4 are in contact with each other and interfere with each other.

[0061] For the specific way of matching and closely arranging the rear end of the first protection door and the front end of the second protection door, the rear end of the first protection door 3 is provided with a sliding column 31 penetrating the second protection door 4 on both sides.

[0062] By arranging the spring set 5 between the first protection door 3 and the bracket 2, the first protection door 3 is provided with a sliding column 31 penetrating the second protection door 4, so that when the first protection door 3 is moved by the acting force, the spring set 5 gives the first protection door 3 elastic reset force for reset, when the second protection door 4 is moved by the acting force, the second protection door 4 pushes the first protection door 3 through the sliding column 31 arranged on the first protection door 3 to extrude the spring set 5, the first protection door 3 and the second protection door 4 keep moving in the same direction, so as to avoid the phenomenon that the second protection door 4 moves left and right or falls off or is stuck and cannot be reset, and the spring set 5 gives the first protection door 3 elastic reset force, 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 protective door 4, that is, a sliding column is arranged on the front end of the second protective door 4, which penetrates the first protective door 3. When the second protective door 4 is moved under the action of force, the second protective door 4 pushes the first protective door 3 to extrude the spring set 5 through the sliding column arranged thereon. The first protective door 3 and the second protective door 4 move in the same direction, thereby avoiding the phenomenon that the second protective door 4 moves left and right or falls off. The spring set 5 provides elastic reset force to the first protective door 3, and the first protective door 3 drives the second protective door 4 to reset, so that the first protective door 3 and the second protective door 4 can play a better safety protection role.

[0064] The first protective door 3 and the second protective door 4 can also not be provided with a sliding column, and the second protective door 4 is directly attached to the first protective door 3 to push the first protective door 3 and extrude the spring set 5, so that the first protective door 3 and the second protective door 4 move in the same direction.

[0065] For the specific structure of the first protective door 3, as shown in FIGS. 3-4, 6-8, the first protective door 3 is in the shape of a U. A through hole 32 is formed in the middle of the first protective door 3 and extends downward, so that the power supply pin inserted from outside can pass through the through hole 32 and be connected with the conductive assembly in the power converter, realizing the conduction of the power supply pin ground. A front inclined limiting guide surface 33 is formed on the lower surface of the rear end of the first protective door 3 and extends from the inner lower surface to the outer upper surface. At least one front limiting block 21 is arranged on the side of the middle of the upper surface of the bracket 2. Preferably, two front limiting blocks 21 are arranged on the side walls of the middle of the upper surface of the bracket 2 and extend toward the middle of the bracket 2. When a single pin or a sharp object is inserted into the corresponding position of the first protective door 3, the side of the first protective door 3 inserted is guided by the front inclined limiting guide surface 33 and drives the first protective door 3 to overturn downward as a whole, so that the side of the first protective door 3 inserted is pressed against the front limiting block 21, thereby preventing the single pin or the sharp object from being inserted alone, preventing the child from playing with the power converter and being electrocuted, and improving safety.

[0066] For the specific structure of the second protective door 4, as shown in FIGS. 3-4, 9-11, the second protective door 4 is concave or T-shaped as a whole, with a through slot 41 in the middle of the second protective door 4, which is used to allow the lower end of the through hole 32 of the first protective door 3 to pass through, and to facilitate the external insertion of the power plug to pass through the through slot 41 and connect with the conductive component in the power converter, realizing the conduction of the power plug ground; the lower surface of the two sides of the second protective door 4 is respectively formed with a rear inclined limiting guide surface 42 extending from the inner lower surface to the outer upper surface; the rear end of the upper surface of the bracket 2 is formed with at least one rear limiting block 22 matching the shape of the lower end of the second protective door 4, when a single plug or sharp object is inserted into the corresponding position of the second protective door 4, the side of the second protective door 4 inserted is guided by the rear inclined limiting guide surface 42 to drive the second protective door 4 to overturn downward as a whole, and is driven by the connecting column 31, so that the first protective door 3 is also driven to overturn sideways, and the first protective door 3 is pressed against the front limiting block 21, so that the first protective door 3 and the second protective door 4 cannot move, realizing the prevention of single plug or sharp object insertion, further preventing the electric shock phenomenon caused by children playing with the power converter, and further improving the safety. If a single plug or sharp object is inserted between the first protective door 3 and the second protective door 4, the second protective door 4 is pressed against the rear limiting block 22, so that the second protective door 4 cannot move, and the first protective door 3 is pressed against the front limiting block 21, so that the first protective door 3 and the second protective door 4 cannot move, realizing the prevention of single plug or sharp object insertion, further preventing the electric shock phenomenon caused by children playing with the power converter, and further improving the safety.

[0067] In order to prevent the second protective door 4 from moving upward excessively, as shown in FIGS. 9-11, the front end of the second protective door 4 is further formed with a limiting table 46 that 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 protective door 4, the second protective door 4 drives the first protective door 3 to move upward until the limiting table 46 at the front end of the second protective door 4 is pressed against the front end of the upper surface of the bracket 2, and the second protective door 4 stops moving upward, thereby effectively preventing the second protective door 4 from moving upward excessively, causing the reset or damage to other structures.

[0068] In order to further improve the efficiency of the first protection door 3 moving when the second protection door 4 is inserted by the external power pin, as shown in Figure 5, a rear lower guide block 25 is symmetrically arranged on the upper surface of the bracket 2 at the rear end of both sides, and a rear lower guide slope 251 extending from the rear end of the upper surface of the bracket 2 to the lower part of the middle of the bracket 2 is further formed on the rear lower guide block 25. When the external power pin 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 to the rear lower guide slope 251, and moves towards the front end of the bracket 2 under the inclined guidance of the rear lower guide slope 251, thereby resisting the insertion of other external power pins, 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] For the specific way of the spring set 5 acting on the first protection door 3, as shown in Figures 3 to 6, a first connecting column 34 is protrudingly arranged on the front end of both sides of the first protection door 3, and a second connecting column 23 extending towards the middle of the bracket 2 is protrudingly arranged on the side wall of the upper surface of the bracket 2 at the front end of both sides; the spring set 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 pin is normally inserted, the first protection door 3 or the second protection door 4 is pressed by the forward force to press the first spring 51 and the second spring 52. After pulling out the power pin, 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 next use. The first spring 51 and the second spring 52 are arranged on both sides of the first protection door 3 respectively, so that the stress of the first protection door 3 is uniform, reducing the problem of lateral displacement caused by uneven stress of the first protection door 3, and further improving the safety.

[0070] In order to improve the accuracy of the movement of the first protection door 3 and the second protection door 4, as shown in Figures 5 to 11, a ground wire accommodation slot 24 is formed in the middle of the support 2, and the two sides of the ground wire accommodation slot 24 are respectively correspondingly extended to the first guide circular arc surface 241 of the front and rear ends of the support. The structure design of the circular arc surface makes the first protection door 3 and the second protection door 4 sliding thereon more easily and smoothly. The middle of the lower surface of the first protection door 3 is respectively formed with a front inclined movable guide slope 35 matched with the ground wire accommodation slot 24, and the middle of the lower surface of the second protection door 4 is respectively formed with a rear inclined movable guide slope 43 matched with the ground wire accommodation slot 24. Preferably, the front inclined movable guide slope 35 and the rear inclined movable guide slope 43 are both upwardly recessed circular arc surfaces, and the two groups are matched with each other, which is beneficial to the cooperation between the components, so that when the first protection door 3 slides on the ground wire accommodation slot 24, the two groups of front inclined movable guide slopes 35 correspondingly guide the first protection door 3 to slide in the middle of the two sides of the ground wire accommodation slot 24, thereby preventing the first protection door 3 from being displaced and falling off during the sliding process. When the second protection door 4 slides on the ground wire accommodation slot 24, the two groups of rear inclined movable guide slopes 43 correspondingly guide the second protection door 4 to slide in the middle of the two sides of the ground wire accommodation slot 24, thereby preventing the second protection door 4 from being displaced and falling off during the sliding process. The cooperation of the front inclined movable guide slope 35 and the rear inclined movable guide slope 43 with the ground wire accommodation slot 24 can provide a straight line guide when the first protection door 3 and the second protection door 4 are moved by the acting force, further improving the accuracy of the movement of the first protection door 3 and the second protection door 4, and further improving the safety.

[0071] For the specific way of external power plug inserted into the power converter, as shown in FIG. 1 to FIG. 3, the upper cover 1 of the main body is provided with a combined socket group, which includes a first socket 101, a second socket 102, a third socket 103, a fourth socket 104, a fifth socket 105, a sixth socket 106, a seventh socket 107, an eighth socket 108, a ninth socket 109, a tenth socket 110, an eleventh socket 111 and a twelfth socket 112. The third socket 103, the fourth socket 104, the twelfth socket 112 and the seventh socket 107 are arranged in a straight line from front to back, the third socket 103 is located at the uppermost end, the fourth socket 104 is formed at the upper end of the twelfth socket 112, the first socket 101 and the second socket 102 are located on the left side of the twelfth socket 112, the fifth socket 105 and the sixth socket 106 are located on the right side of the twelfth socket 112, the eighth socket 108 and the ninth socket 109 are located on the left side of the seventh socket 107, and the tenth socket 110 and the eleventh socket 111 are located on the right side of the seventh socket 107. The second socket 102, the fifth socket 105 and the seventh socket 107 form a U.S. standard socket, the first socket 101, the twelfth socket 112 and the sixth socket 106 form an Italian socket, the third socket 103, the eighth socket 108 and the eleventh socket 111 form a British standard socket, and the fourth socket 104, the ninth socket 109 and the tenth socket 110 form a Chinese standard socket and an Australian standard socket. The special combined socket group structure on the upper cover 1 of the main body can be matched with the pins of multiple national standards to adapt to the conversion between plugs and sockets of multiple countries, greatly improving the use range.

[0072] For the specific way of inserting the external pins into the first protective door 3, as shown in FIG. 3 and FIG. 6, two sides of the through hole 32 of the first protective door 3 are respectively formed with the American pin guide inclined surface 36 corresponding to the second jack 102 and the fifth jack 105 and extending from the front end upward to the rear end downward, the outer side of the American pin guide inclined surface 38 is formed with the Italian pin guide inclined surface 37 corresponding to the first jack 101 or the sixth jack 106 and extending from the front end upward to the rear end downward, and the lower end of the jack of the first protective door 3 is further formed with the American ground pin guide inclined surface 38 corresponding to the seventh jack 107 and extending from the front end upward to the rear end downward. When the external American pin is inserted into the main body upper cover 1, the fire wire of the American pin passes through the second jack 102 and presses on the left American pin guide inclined surface 38, the zero wire passes through the fifth jack 105 and presses on the right American pin guide inclined surface 36, and the ground wire passes through the seventh jack 107 and presses on the American ground pin guide inclined surface 38. Under the guidance of the American pin guide inclined surface 36 and the American ground pin guide inclined surface 38, the American pin pushes the first protective door 3 to the spring set 5, so that the American pin is in conduction with the conduction assembly of the power converter arranged in the support 2, realizing the conversion of the pin. When the external Italian pin is inserted into the main body upper cover 1, the fire wire of the Italian pin passes through the first jack 101 and presses on the left Italian pin guide inclined surface 37, the zero wire passes through the sixth jack 106 and presses on the right Italian pin guide inclined surface 37, and the ground wire passes through the twelfth jack 112. Under the guidance of the Italian pin guide inclined surface 37, the Italian pin pushes the first protective door 3 to the spring set 5, so that the Italian pin is in conduction with the conduction assembly of the power converter arranged in the support 2, realizing the conversion of the pin.

[0073] For the specific way of inserting the external pins into the second protective door 4, as shown in FIG. 3 and FIG. 9, the through slot 41 of the second protective door 4 is formed with a China and Australia standard pin guide inclined surface 44 on each side, which corresponds to the ninth jack 109 and the tenth jack 110 and extends from the front upper side to the rear lower side as a whole. The outer side of the China and Australia standard pin guide inclined surface 44 is formed with a British standard pin guide inclined surface 45, which corresponds to the eighth jack 108 or the eleventh jack 111 and extends from the front upper side to the rear lower side as a whole. When the external national standard pin or the European pin is inserted into the main body upper cover 1, the fire wire of the national standard pin or the European pin passes through the ninth jack 109 and presses on the left China and Australia standard pin guide inclined surface 44, the zero wire passes through the tenth jack 110 and presses on the right China and Australia standard pin guide inclined surface 44, and the ground wire passes through the fourth jack 104. Under the guidance of the China and Australia standard pin guide inclined surface 44, the national standard pin or the European pin pushes the second protective door 4 towards the spring set 5, the second protective door 4 drives the first protective door 3 to move towards the front end, so that the national standard pin or the European pin is in conduction with the conduction assembly of the power converter arranged in the support 2, realizing the conversion of the pin. When the external British standard pin is inserted into the main body upper cover 1, the fire wire of the British standard pin passes through the eighth jack 108 and presses on the left British standard pin guide inclined surface 45, the zero wire passes through the eleventh jack 111 and presses on the right British standard pin guide inclined surface 45, and the ground wire passes through the third jack 103. Under the guidance of the British standard pin guide inclined surface 45, the British standard pin pushes the second protective door 4 towards the spring set 5, the second protective door 4 drives the first protective door 3 to move towards the front end, so that the British standard pin is in conduction with the conduction assembly of the power converter arranged in the support 2, realizing the conversion of the pin.

[0074] Embodiment Two

[0075] In the first embodiment, the structure of the single insertion prevention protective 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] As shown in FIG. 14 to FIG. 23, the main difference between the second embodiment and the first embodiment is that the second embodiment further forms a limiting column 39 extending upward and capable of being pressed on the front end of the upper surface of the bracket 2 on both sides of the through hole 32 of the first protective door 3, instead of the limiting table 46 integrated with the front end of the second protective door 4. When the external power pin normally presses on the first protective door 3 or the second protective door 4, the first protective door 3 moves upward alone or the second protective door 4 drives the first protective door 3 to move upward until the limiting column 39 of the first protective door 3 presses on the front end of the upper surface of the bracket 2, and the first protective door 3 stops moving upward, thereby effectively preventing the first protective door 3 from moving upward excessively to cause the situation that it cannot be reset or damages other structures.

[0077] In order to further improve the practicability of the protective single plug door, as shown in FIG. 14 to FIG. 15, the combined jack set further comprises a thirteenth jack 113 arranged in the middle of the third jack 103, a fourteenth jack 114 arranged in the middle of the eighth jack 108, and a fifteenth jack 115 arranged in the middle of the eleventh jack 111, and the thirteenth jack 113, the fourteenth jack 114 and the fifteenth jack 115 combine to form an Indian standard jack. The special combined jack set structure design cooperates with the pins of multiple national standards, and can be applied to the conversion between multiple national plugs and jacks, thereby further improving the use range.

[0078] As shown in FIG. 18 to FIG. 23, for the specific way of inserting the external Indian standard pin into the protective single plug door, the middle of the through hole 32 is formed with an Indian standard ground wire accommodating hole 321 matched with the thirteenth jack 113, and the Indian standard pin guide inclined surface 47 corresponding to the fourteenth jack 114 and the fifteenth jack 115 is further formed between the Indian standard pin guide inclined surface 45 and the Chinese standard and Australian standard pin guide inclined surface 44 and extends from the front end of the upper side to the rear end of the lower side. When the 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 jack 115 and presses on the left Indian standard pin guide inclined surface 47, the zero line passes through the fourteenth jack 114 and presses on the right Indian standard pin guide inclined surface 47, and the ground wire passes through the thirteenth jack 113 and enters the Indian standard ground wire accommodating hole 321. Under the guidance of the Indian standard pin guide inclined surface 47, the external Indian standard pin pushes the first protective door 3 and the second protective door 4 to the direction of the spring set 5, so that the Indian standard pin is in conduction with the conduction assembly of the power converter arranged in the bracket 2, thereby realizing the conversion of the pin.

[0079] It should be noted that the anti-single plug protection door for the multi-country power converter disclosed in the present application is improved in specific structure, and the specific control mode is not the innovation point of the present application. The spring, American plug pin, British plug pin, Chinese standard plug pin, Italian plug pin, European plug pin and other components involved in the present application can be general standard components or components known to those skilled in the art, and the structure, principle and control mode thereof are known to those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0080] The above is only the preferred embodiment of the present application, and does not limit the technical scope of the present application in any way. Therefore, other structures obtained by using the same or similar technical features as the above-mentioned embodiments of the present application are within the protection scope of the present application.

Claims

1. A single-insert protection door for a multinational power converter, characterized by: The invention comprises a main body upper cover, a bracket matching the main body upper cover, a first protective door arranged on the bracket, a second protective door arranged on the bracket, and a spring group arranged between the first protective door and the front end of the bracket, wherein the first protective door and the second protective door contact and interfere with each other, and the first protective door and the second protective door move in the same direction.

2. The single-insert protection door for a multinational power converter according to claim 1, characterized in that: The rear end of the first protection door and the front end of the second protection door contact and interfere with each other.

3. The single-insert protection door for a multi-national power converter according to claim 1, characterized in that: A sliding column penetrating the second protection door is protruded from both sides of the rear end of the first protection door.

4. The single-insert protection door for a multinational power converter according to claim 1, characterized in that: A sliding column penetrating the first protection door is protruded from both sides of the front end of the second protection door.

5. The single-insert protection door for a multi-national power converter according to claim 1, characterized in that: The first protection door is in the shape of a Chinese character "X" as a whole, and a through hole extending downward and concave is opened in the middle of the first protection door.

6. The single-insert protection door for a multi-national power converter according to claim 5, characterized in that: A front inclined limiting guide surface extending obliquely from the inner lower portion to the outer upper portion is respectively formed on both sides of the rear end of the first protection door.

7. The single-insert protection door for a multi-national power converter according to claim 5, characterized in that: At least one front limiting block is protruded from the side edge of the middle portion of the upper surface of the bracket.

8. The single-insert protection door for a multi-national power converter according to claim 5, characterized in that: The second protection door is in a concave shape or a T-shape as a whole, and a through groove is provided in the middle of the second protection door.

9. The single-insert protection door for a multi-national power converter according to claim 8, characterized in that: A rear-inclined limiting guide surface is formed on the lower surfaces of both sides of the second protection door, and extends obliquely from the inner lower part to the outer upper part.

10. The single-insert protection door for a multi-national power converter according to claim 8, characterized in that: At least one rear limiting block matching the shape of the lower end of the second protective door is formed on the rear end of the upper surface of the bracket.

11. The single-insert protection door for a multi-national power converter according to claim 8, characterized in that: The front end of the second protection door is further formed with a limiting platform that can be pressed against the front end of the upper surface of the bracket.

12. The single-insert protection door for a multi-national power converter according to claim 1, characterized in that: A rear lower guide block is symmetrically provided on both sides of the rear end of the upper surface of the bracket. The rear lower guide block is further formed with a rear lower guide inclined surface extending obliquely from the upper rear end of the upper surface of the bracket to the lower middle part of the bracket.

13. The single-insert protection door for a multi-national power converter according to claim 1, characterized in that: A first connecting column is respectively protruded on both sides of the front end of the first protective door, and a second connecting column extending toward the middle of the bracket is respectively protruded on the two side walls of the front end of the upper surface 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 another first connecting column and another second connecting column.

14. The single-insert protection door for a multi-national power converter according to claim 1, characterized in that: A ground wire clearance groove is formed in the middle of the bracket, and the two sides of the ground wire clearance groove are first guide arc surfaces extending respectively toward the front and rear ends of the bracket; a front inclined movable guide inclined surface matching the first guide arc surface is formed on both sides of the middle of the lower surface of the first protective door, and a rear inclined movable guide inclined surface matching the first guide arc surface is formed on both sides of the middle of the lower surface of the second protective door.

15. The single-insert protection door for a multi-national power converter according to claim 14, characterized in that: The front tilting movable guiding inclined surface and the rear tilting movable guiding inclined surface are both in the shape of an upwardly concave arc surface.

16. The single-insert protection door for a multi-national power converter according to claim 8, characterized in that: The main body 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 top, the fourth jack is formed above 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 single-insert protection door for a multi-national power converter according to claim 16, characterized in that: On both sides of the through hole of the first protective door, there are respectively formed US-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. On the outer side of the US-standard pin guide slopes, there is formed 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. The lower end of the through hole of the first protective door is also formed with a US-standard ground pin guide slope that corresponds to the seventh socket and extends obliquely from the upper front end to the lower rear end.

18. The single-insert protection door for a multi-national 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 that correspond to the ninth and tenth sockets and extend obliquely from the upper outer front end to the lower inner rear end. On the outer side of the Chinese and Australian standard pin guide slopes, there is formed a British standard pin guide slope that corresponds to the eighth or eleventh socket and extends obliquely from the upper front end to the lower inner rear end.

19. The single-insert protection door for a multi-national 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 single-insert protection door for a multi-national 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 gauge socket.

21. The single-insert protection door for a multi-national 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 and fifteenth sockets and extend obliquely from the upper outer front end to the lower inner rear end.

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